Update dwm module after merge 3.7.0 version

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Merge tag '3.7.1'

.clang-format

@@ -1,9 +1,9 @@
 ---
 Language: Cpp
-Standard: Cpp11
+Standard: c++17
 BasedOnStyle: Google
 ColumnLimit: 120
-NamespaceIndentation: All
+NamespaceIndentation: Inner
 AlignAfterOpenBracket: DontAlign
 AllowShortFunctionsOnASingleLine: Empty
 AllowShortIfStatementsOnASingleLine: false

.clang-tidy

@@ -16,6 +16,7 @@ Checks: '
         -modernize-raw-string-literal,
         -modernize-use-bool-literals,
         -modernize-use-trailing-return-type,
+        -readability-identifier-length,
         -readability-implicit-bool-cast,
         -readability-else-after-return,
         -readability-named-parameter,
@@ -26,7 +27,8 @@ Checks: '
         -cppcoreguidelines-pro-type-reinterpret-cast,
         -cppcoreguidelines-pro-type-union-access,
         -cppcoreguidelines-pro-type-cstyle-cast,
-        -cppcoreguidelines-pro-bounds-constant-array-index
+        -cppcoreguidelines-pro-bounds-constant-array-index,
+        -cppcoreguidelines-owning-memory,
         '
 
 CheckOptions:

.editorconfig

@@ -7,6 +7,9 @@ indent_style = space
 indent_size = 2
 charset = utf-8
 
+[*.py]
+indent_size = 4
+
 [Makefile]
 indent_style = tab
 indent_size = 2

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -1,4 +1,4 @@
-name: Bug Report
+name: 🐞 Bug Report
 description: Create a report for something that misbehaves
 title: "[Bug]: "
 labels: ["bug", "needs confirmation"]
@@ -33,7 +33,7 @@ body:
     id: config
     attributes:
       label: Minimal config
-      description: A minimal but complete config with which the problem occurs.
+      description: A minimal but **complete** config with which the problem occurs.
       render: dosini
       placeholder: |
         [bar/example]
@@ -103,7 +103,7 @@ body:
     id: context
     attributes:
       label: Additional Context / Screenshots
-      description: If applicaple, add screenshots and additional context to explain your problem
+      description: If applicable, add screenshots and additional context to explain your problem
     validations:
       required: false
   - type: markdown

.github/ISSUE_TEMPLATE/build.yml

@@ -1,81 +0,0 @@
-name: Build Issues
-description: Report issues while building polybar from source
-labels: ["build", "needs confirmation"]
-body:
-  - type: checkboxes
-    id: checklist
-    attributes:
-      label: Checklist
-      description: Please carefully go through this checklist and check each option.
-      options:
-        - label: I have followed every step on the [compiling wiki page](https://github.com/polybar/polybar/wiki/Compiling) and installed all necessary dependencies.
-          required: true
-        - label: My problem is not described on the [known issues page](https://github.com/polybar/polybar/wiki/Known-Issues)
-          required: true
-        - label: I have searched for other open and closed [issues](https://github.com/polybar/polybar/issues?q=is%3Aissue) that may have already reported this problem.
-          required: true
-        - label: I was able to reproduce this build issue in a clean build
-          required: true
-  - type: dropdown
-    id: source
-    attributes:
-      label: From where are you building polybar?
-      options:
-        - From a release archive
-        - By cloning this repository
-        - Some other way (How?)
-    validations:
-      required: true
-  - type: input
-    id: how
-    attributes:
-      label: Describe how you are building polybar.
-      description: Only if you selected "Some other way".
-      placeholder: ex. polybar from the AUR
-    validations:
-      required: false
-  - type: input
-    id: version
-    attributes:
-      label: Version
-      description: What version of polybar are you trying to build? If you are building directly from git, this is the output of `git describe --tags`.
-      placeholder: ex. 3.5.7
-    validations:
-      required: true
-  - type: textarea
-    id: commands
-    attributes:
-      label: Build Process
-      description: List the exact commands you are using to build polybar
-      render: shell
-      placeholder: |
-        mkdir build
-        cd build
-        cmake ..
-        ...
-    validations:
-      required: true
-  - type: textarea
-    id: logs
-    attributes:
-      label: Build log
-      description: |
-        Copy-paste all the terminal output produced while building polybar.
-        This MUST include the output of the `cmake`, `make`, and/or `build.sh` commands, if you used them.
-      render: text
-    validations:
-      required: true
-  - type: input
-    id: distro
-    attributes:
-      label: Linux Distribution
-      placeholder: ex. Ubuntu 21.04
-    validations:
-      required: true
-  - type: textarea
-    id: context
-    attributes:
-      label: Additional Context
-      description: Add any other context that you think is necessary about the problem here
-    validations:
-      required: false

.github/ISSUE_TEMPLATE/config.yml

@@ -1,8 +1,11 @@
 blank_issues_enabled: false
 contact_links:
-  - name: Polybar Gitter Room
-    url: https://gitter.im/polybar/polybar
-    about: Please ask and answer questions here.
-  - name: Polybar subreddit
-    url: https://www.reddit.com/r/polybar
-    about: Please ask and answer questions here.
+  - name: 🙋 Ask a question
+    url: https://github.com/polybar/polybar/blob/master/SUPPORT.md
+    about: Have a look at our support resources and channels
+  - name: 💡 Feature request
+    url: https://github.com/polybar/polybar/discussions/categories/ideas
+    about: Suggest your idea over in Discussions
+  - name: 🛠️ Build Issues
+    url: https://github.com/polybar/polybar/discussions/categories/build-support
+    about: Get support when building polybar from source

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,20 +0,0 @@
----
-name: Feature request
-about: Suggest an idea for this project
-labels: feature, needs confirmation
----
-
-## Is your feature request related to a problem? Please describe.
-<!-- A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] -->
-
-## Why does polybar need this feature?
-<!-- Describe why this feature would be useful to a large percentage of users (You need to convince us). -->
-
-## Describe the solution you'd like
-<!-- A clear and concise description of how your solution would work. This includes possible config options that should be added. -->
-
-## Describe alternatives you've considered
-<!-- A clear and concise description of any alternative solutions or features you've considered, if any. -->
-
-## Additional context
-<!-- Add any other context or screenshots about the feature request here. -->

.github/workflows/ci.yml

@@ -10,11 +10,11 @@ on:
 
 jobs:
   docs:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     env:
       COLOR: "ON"
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           ref: ${{ github.event.inputs.ref }}
       - name: Install Dependencies
@@ -29,7 +29,7 @@ jobs:
           make doc
 
   ipc:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     env:
       COLOR: "ON"
     steps:
@@ -48,7 +48,7 @@ jobs:
             python3-xcbgen \
             libuv1-dev \
             xcb-proto
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           submodules: true
           ref: ${{ github.event.inputs.ref }}
@@ -60,7 +60,7 @@ jobs:
           make polybar-msg
 
   build:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     strategy:
       matrix:
         cxx: [g++, clang++]
@@ -115,7 +115,7 @@ jobs:
           if [ "$POLYBAR_BUILD_TYPE" = "tests" ]; then
             sudo apt-get install -y lcov
           fi
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
         with:
           submodules: true
           ref: ${{ github.event.inputs.ref }}
@@ -125,7 +125,7 @@ jobs:
         run: ./common/ci/configure.sh
       - name: Build
         run: |
-          cd $BUILD_DIR
+          cd "$BUILD_DIR"
           make
       - name: Collect initial coverage
         if: ${{ matrix.polybar_build_type == 'tests' }}
@@ -134,17 +134,17 @@ jobs:
       - name: Tests
         if: ${{ matrix.polybar_build_type == 'tests' }}
         run: |
-          cd $BUILD_DIR
+          cd "$BUILD_DIR"
           make check
       - name: Collect coverage
         if: ${{ matrix.polybar_build_type == 'tests' }}
         run: |
           lcov --capture --no-external --directory . -o cov_tests.info
           lcov --add-tracefile cov_base.info --add-tracefile cov_tests.info -o cov_total.info
-          lcov --remove cov_total.info ${PWD}'/build/*' ${PWD}'/tests/*' ${PWD}'/lib/*' -o cov.info
+          lcov --remove cov_total.info "${PWD}/build/*" "${PWD}/tests/*" "${PWD}/lib/*" -o cov.info
       - name: Upload Coverage
         if: ${{ matrix.polybar_build_type == 'tests' }}
-        uses: codecov/codecov-action@v2
+        uses: codecov/codecov-action@v3
         with:
           flags: unittests
           files: ./cov.info

.github/workflows/release.yml

@@ -31,9 +31,11 @@ jobs:
             RELEASE_TAG=${GITHUB_REF#refs/tags/}
           fi
           echo "Publishing Version $RELEASE_TAG"
-          echo "RELEASE_TAG=$RELEASE_TAG" >> "$GITHUB_ENV"
-          echo "POLYBAR_DIR=polybar-$RELEASE_TAG" >> "$GITHUB_ENV"
-          echo "POLYBAR_ARCHIVE=polybar-$RELEASE_TAG.tar.gz" >> "$GITHUB_ENV"
+          {
+            echo "RELEASE_TAG=$RELEASE_TAG"
+            echo "POLYBAR_DIR=polybar-$RELEASE_TAG"
+            echo "POLYBAR_ARCHIVE=polybar-$RELEASE_TAG.tar.gz"
+          } >> "$GITHUB_ENV"
 
       # Checks out the target tag
       - uses: actions/checkout@v2
@@ -91,7 +93,7 @@ jobs:
             const fname = '${{ env.POLYBAR_ARCHIVE }}'
             const url = '${{ steps.upload_archive.outputs.browser_download_url }}'
             const hash = '${{ env.SHA256SUM }}'
-            let body = "## Download:\n\n"
+            let body = "## Download\n\n"
             body += `[${fname}](${url}) (**sha256**: \`${hash}\`)\n\n`
             body += process.env.RELEASE_BODY;
 

.gitignore

@@ -8,4 +8,10 @@
 .tags
 *.user
 
+# clangd
+/.cache
+
 polybar-*.tar
+*.cache
+
+.venv

.readthedocs.yaml

@@ -0,0 +1,22 @@
+---
+# .readthedocs.yaml
+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+# Required
+version: 2
+
+# Set the version of Python and other tools you might need
+build:
+  os: ubuntu-22.04
+  tools:
+    python: "3"
+
+# Build documentation in the docs/ directory with Sphinx
+sphinx:
+  configuration: doc/conf.py
+  fail_on_warning: true
+
+python:
+  install:
+    - requirements: doc/requirements.txt

.ycm_extra_conf.py

@@ -1,126 +0,0 @@
-import os
-import ycm_core
-
-# Default flags
-flags = [
-    '-std=c++14',
-    '-Wall',
-    '-Wextra',
-
-    # Relative paths are corrected by MakeRelativePathsInFlagsAbsolute
-    '-Isrc',
-    '-Iinclude',
-    '-Ilib/concurrentqueue/include',
-    '-Ilib/i3ipcpp/include',
-    '-Ilib/xpp/include',
-    '-Itests',
-
-    '-I/usr/include',
-    '-I/usr/include/freetype2',
-    ]
-
-# Base directory of the project, parent directory of all source files
-project_dir = os.path.dirname(os.path.abspath(__file__))
-
-# This assumes that everyone coding for this project builds inside the 'build'
-# directory
-compilation_database_folder = project_dir + "/build"
-
-if os.path.exists(compilation_database_folder):
-  database = ycm_core.CompilationDatabase(compilation_database_folder)
-else:
-  database = None
-
-SOURCE_EXTENSIONS = ['.cpp', '.cxx', '.cc', '.c', '.m', '.mm']
-
-# Converts all relative paths in the given flag list to absolute paths with
-# working_directory as the base directory
-def MakeRelativePathsInFlagsAbsolute(flags, working_directory):
-  if not working_directory:
-    return list(flags)
-  new_flags = []
-  make_next_absolute = False
-  path_flags = ['-isystem', '-I', '-iquote', '--sysroot=']
-  for flag in flags:
-    new_flag = flag
-
-    if make_next_absolute:
-      make_next_absolute = False
-      if not flag.startswith('/'):
-        new_flag = os.path.join(working_directory, flag)
-
-    for path_flag in path_flags:
-      if flag == path_flag:
-        make_next_absolute = True
-        break
-
-      if flag.startswith(path_flag):
-        path = flag[len(path_flag):]
-        new_flag = path_flag + os.path.join(working_directory, path)
-        break
-
-    if new_flag:
-      new_flags.append(new_flag)
-  return new_flags
-
-def IsHeaderFile(filename):
-  extension = os.path.splitext(filename)[1]
-  return extension in ['.h', '.hxx', '.hpp', '.hh', ".inl"]
-
-# Tries to query the compilation database for flags
-# For header files it tries to use the flags for a corresponding source file
-def GetCompilationInfoForFile(filename):
-  if not database:
-    return None
-
-  # The compilation_commands.json file generated by CMake does not have entries
-  # for header files. We try to use the compile flags used for the corresponding
-  # source file.
-  #
-  # For this try to replace the file extension with an extension that
-  # corresponds to a source and we also try to replace the 'include' folder in
-  # the path with 'src'
-  if IsHeaderFile(filename) :
-    basename = os.path.splitext(filename)[0]
-
-    # Absolute path of the include and source directories
-    include_dir = project_dir + "/include"
-    src_dir = project_dir + "/src"
-
-    # Absolute path without file extension, with the 'include' folder replaced
-    # with 'src' in the path
-    src_basename = None
-    # If the header file is inside the include dir, try to search in the src dir
-    if basename.startswith(include_dir):
-      # file path relative to include dir
-      rel_path_include = os.path.relpath(basename, include_dir)
-      src_basename = os.path.join(src_dir, rel_path_include)
-
-    for extension in SOURCE_EXTENSIONS:
-      # A list of all possible replacement files to be searched
-      replacement_files = [basename + extension]
-
-      if src_basename:
-        replacement_files.append(src_basename + extension)
-
-      for replacement_file in replacement_files:
-        if os.path.exists(replacement_file):
-          comp_info = database.GetCompilationInfoForFile(replacement_file)
-          if comp_info.compiler_flags_:
-            return comp_info
-  return database.GetCompilationInfoForFile(filename)
-
-def FlagsForFile(filename, **kwargs):
-  compilation_info = GetCompilationInfoForFile(filename)
-  if compilation_info and compilation_info.compiler_flags_:
-    # Bear in mind that compilation_info.compiler_flags_ does NOT return a
-    # python list, but a "list-like" StringVec object
-    final_flags = MakeRelativePathsInFlagsAbsolute(
-        [x for x in compilation_info.compiler_flags_ if x != "-Werror"],
-        compilation_info.compiler_working_dir_)
-  else:
-    # We use default flags if GetCompilationInfoForFile can't find any flags
-    relative_to = project_dir
-    final_flags = MakeRelativePathsInFlagsAbsolute(flags, relative_to)
-
-  return {'flags': final_flags, 'do_cache': True}

CHANGELOG.md

@@ -65,6 +65,81 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - `internal/i3`: module errors when i3 has negative gaps ([`#2888`](https://github.com/polybar/polybar/issues/2888), [`#2889`](https://github.com/polybar/polybar/pull/2889))
 - `wm-restack = bspwm`: bar may become unclickable if there are overlapping monitors ([`#2873`](https://github.com/polybar/polybar/issues/2873), [`#2961`](https://github.com/polybar/polybar/pull/2961))
 
+## [3.7.1] - 2023-11-27
+### Build
+- Fixed missing header when using `libc++` in clang 15 and below
+
+### Changed
+- `internal/tray`: The module must use the `<tray>` tag (this is the default) ([`#3037`](https://github.com/polybar/polybar/pull/3037))
+
+## Fixed
+- Modules did not validate that all tags (e.g. `<label>`) used in a format were valid for that format ([`#3043`](https://github.com/polybar/polybar/issues/3043), [`#3045`](https://github.com/polybar/polybar/pull/3045))
+- `internal/tray`: Fixed `module-margin` and `separator` being applied to completely empty tray module ([`#3036`](https://github.com/polybar/polybar/issues/3036), [`#3037`](https://github.com/polybar/polybar/pull/3037))
+
+## [3.7.0] - 2023-11-05
+### Breaking
+- `custom/script`:
+  - No longer hides the module if the `exec` command failed and did not change the output from the previous run ([`#2636`](https://github.com/polybar/polybar/issues/2636)). Somewhat similar original behaviour can be imitated with `format-fail`, if necessary.
+  - If the `exec` command produced no output and exited with a non-zero exit code the module is no longer completely empty, but just has an empty `%output%` token. If you relied on this behavior to hide the module under certain circumstances, make sure the script exits with an exit code of zero. ([`#2857`](https://github.com/polybar/polybar/discussions/2857), [`#2861`](https://github.com/polybar/polybar/pull/2861))
+
+### Build
+- Respect `CMAKE_INSTALL_PREFIX` when installing default config ([`#2770`](https://github.com/polybar/polybar/pull/2770), [`#2917`](https://github.com/polybar/polybar/pull/2917))
+- Change default `CMAKE_INSTALL_PREFIX` to `/usr`. Installations with default flags will now go into `/usr` instead of `/usr/local` ([`#2917`](https://github.com/polybar/polybar/pull/2917))
+- Bump C++ version to C++17 ([`#2847`](https://github.com/polybar/polybar/pull/2847))
+
+### Deprecated
+- `custom/text`: The `content` setting and all its properties are deprecated in favor of `format` with the same functionality. ([`#2676`](https://github.com/polybar/polybar/pull/2676))
+- tray: All tray-related settings in the bar section are deprecated. They are replaced by the new tray module ([`#3002`](https://github.com/polybar/polybar/pull/3002))
+  - `tray-position`, `tray-detached`, `tray-maxsize`, `tray-scale`, `tray-transparent`, `tray-background`, `tray-foreground`, `tray-padding`, `tray-offset-x`, `tray-offset-y`
+
+### Added
+- A tray module with type `internal/tray` for positioning the tray like a module ([`#2689`](https://github.com/polybar/polybar/issues/2689))
+- `internal/temperature`: `%temperature-k%` token displays the temperature in degrees Kelvin ([`#2774`](https://github.com/polybar/polybar/discussions/2774), [`#2784`](https://github.com/polybar/polybar/pull/2784))
+- `internal/pulseaudio`: `reverse-scroll` option ([`#2664`](https://github.com/polybar/polybar/pull/2664))
+- `custom/script`: Repeat interval for script failure (`interval-fail`) and `exec-if` (`interval-if`) ([`#943`](https://github.com/polybar/polybar/issues/943), [`#2606`](https://github.com/polybar/polybar/issues/2606), [`#2630`](https://github.com/polybar/polybar/pull/2630))
+- `custom/ipc`:
+  - Added support for `<label>` in `format` ([`#2841`](https://github.com/polybar/polybar/pull/2841)) by [@madhavpcm](https://github.com/madhavpcm).
+  - Added support for `format-i` for each defined `hook-i` ([`#2775`](https://github.com/polybar/polybar/issues/2775), [`#2810`](https://github.com/polybar/polybar/pull/2810)) by [@madhavpcm](https://github.com/madhavpcm).
+- `custom/text`: Loads the `format` setting, which supports the `<label>` tag, if the deprecated `content` is not defined ([`#1331`](https://github.com/polybar/polybar/issues/1331), [`#2673`](https://github.com/polybar/polybar/pull/2673), [`#2676`](https://github.com/polybar/polybar/pull/2676))
+- `internal/backlight`:
+  - `scroll-interval` option ([`#2696`](https://github.com/polybar/polybar/issues/2696), [`#2700`](https://github.com/polybar/polybar/pull/2700))
+  - `poll-interval` setting controls how often the module is updated (in case it does not happen when the brightness changes) ([`#2835`](https://github.com/polybar/polybar/issues/2835), [`#3028`](https://github.com/polybar/polybar/pull/3028))
+- `internal/temperature`: Added `zone-type` setting ([`#2572`](https://github.com/polybar/polybar/issues/2572), [`#2752`](https://github.com/polybar/polybar/pull/2752)) by [@xphoniex](https://github.com/xphoniex)
+- `internal/xwindow`: `%class%` and `%instance%` tokens, which show the contents of the `WM_CLASS` property of the active window ([`#2830`](https://github.com/polybar/polybar/pull/2830))
+- Added `enable-struts` option in bar section to enable/disable struts ([`#2769`](https://github.com/polybar/polybar/issues/2769), [`#2844`](https://github.com/polybar/polybar/pull/2844)) by [@VanillaViking](https://github.com/VanillaViking).
+- `wm-restack`:
+  - `bottom`: lowers polybar to the bottom of the window stack (same as the previous behavior of `generic`) ([`#2961`](https://github.com/polybar/polybar/pull/2961))
+  - `ewmh`: Tries to use the `_NET_SUPPORTING_WM_CHECK` hint to position the bar ([`#2961`](https://github.com/polybar/polybar/pull/2961))
+- `internal/xworkspaces`: `group-by-monitor` setting to decide whether `_NET_DESKTOP_VIEWPORT` should be used to group workspaces by monitor; ([`#2603`](https://github.com/polybar/polybar/issues/2603), [`#2926`](https://github.com/polybar/polybar/pull/2926)) by [@slotThe](https://github.com/slotThe/).
+
+### Changed
+- `custom/script`:
+  - No longer produces a completely empty module if the `exec` command failed. It only produces an empty module if the script had a zero exit code. ([`#2857`](https://github.com/polybar/polybar/discussions/2857), [`#2861`](https://github.com/polybar/polybar/pull/2861))
+  - Bumped the script polling interval (not related to the `interval` setting) to decrease wakeups. Polybar may take slightly longer to shut down. [`#2879`](https://github.com/polybar/polybar/pull/2879)
+- `internal/fs`: Use `/` as a fallback if no mountpoints are specified ([`#2572`](https://github.com/polybar/polybar/issues/2572), [`#2705`](https://github.com/polybar/polybar/pull/2705))
+- `internal/backlight`:
+  - Detect backlight if none specified ([`#2572`](https://github.com/polybar/polybar/issues/2572), [`#2728`](https://github.com/polybar/polybar/pull/2728))
+  - `use-actual-brightness` now always defaults to `true` (even for `amdgpu` backlights) ([`#2835`](https://github.com/polybar/polybar/issues/2835), [`2839`](https://github.com/polybar/polybar/pull/2839))
+- Providing a negative min-width to a token adds right-padding ([`#2789`](https://github.com/polybar/polybar/issues/2789), [`#2801`](https://github.com/polybar/polybar/pull/2801)) by [@VanillaViking](https://github.com/VanillaViking).
+- Changed fuzzy match option on i3 and bspwm modules to find longest match instead of the first match ([`#2831`](https://github.com/polybar/polybar/pull/2831), [`#2829`](https://github.com/polybar/polybar/issues/2829)) by [@Ron0Studios](https://github.com/ron0studios/).
+- `wm-restack`
+  - `generic`: Is now a best effort combination of other restacking strategies. First tries `ewmh` and then the `bottom` strategy ([`#2961`](https://github.com/polybar/polybar/pull/2961))
+  - `bspwm`: Will restack above the topmost bspwm root window instead of the root window associated with the monitor polybar is on ([`#3019`](https://github.com/polybar/polybar/pull/3019))
+
+### Fixed
+- Waiting for double click interval on modules that don't have a double click action ([`#2663`](https://github.com/polybar/polybar/issues/2663), [`#2695`](https://github.com/polybar/polybar/pull/2695))
+- renderer:
+  - Small gaps when rendering emojis ([`#2785`](https://github.com/polybar/polybar/issues/2785), [`#2802`](https://github.com/polybar/polybar/pull/2802))
+  - Crash when using pseudo-transparency with certain wallpapers ([`#2798`](https://github.com/polybar/polybar/issues/2798), [`#2813`](https://github.com/polybar/polybar/pull/2813))
+  - Crash when invalid UTF-8 text is encountered ([`#2091`](https://github.com/polybar/polybar/issues/2091), [`#2958`](https://github.com/polybar/polybar/pull/2958))
+- config:
+  - Error reporting for deprecated config values ([`#2724`](https://github.com/polybar/polybar/issues/2724))
+  - Also monitor include-files for changes when --reload is set ([`#675`](https://github.com/polybar/polybar/issues/675), [`#2759`](https://github.com/polybar/polybar/pull/2759))
+- `internal/xwindow`: module does not crash when a tag is not provided in format ([`#2826`](https://github.com/polybar/polybar/issues/2826), [`#2833`](https://github.com/polybar/polybar/pull/2833)) by [@VanillaViking](https://github.com/VanillaViking)
+- `internal/i3`: module errors when i3 has negative gaps ([`#2888`](https://github.com/polybar/polybar/issues/2888), [`#2889`](https://github.com/polybar/polybar/pull/2889))
+- `internal/backlight`: Fix module being one step behind every update ([`#2835`](https://github.com/polybar/polybar/issues/2835), [`#3028`](https://github.com/polybar/polybar/pull/3028))
+- `wm-restack = bspwm`: bar may become unclickable if there are overlapping monitors ([`#2873`](https://github.com/polybar/polybar/issues/2873), [`#2961`](https://github.com/polybar/polybar/pull/2961))
+
 ## [3.6.3] - 2022-05-04
 ### Fixed
 - `custom/script`: Output clearing when `exec-if` fails ([`#2674`](https://github.com/polybar/polybar/issues/2674))
@@ -101,7 +176,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - We added the backslash escape character (\\) for configuration values. This means that the literal backslash character now has special meaning in configuration files, therefore if you want to use it in a value as a literal backslash, you need to escape it with the backslash escape character. The parser logs an error if any unescaped backslashes are found in a value. This affects you only if you are using two consecutive backslashes in a config value, which will now be interpreted as a single literal backslash. ([`#2354`](https://github.com/polybar/polybar/issues/2354))
 - We rewrote our formatting tag parser. This shouldn't break anything, if you experience any problems, please let us know. The new parser now gives errors for certain invalid tags where the old parser would just silently ignore them. Adding extra text to the end of a valid tag now produces an error. For example, tags like `%{T-a}`, `%{T2abc}`, `%{rfoo}`, and others will now start producing errors. This does not affect you unless you are producing your own invalid formatting tags (for example in a script).
 - For security reasons, the named pipe at `/tmp/polybar_mqueue.<PID>` had its permission bits changed from `666` to `600` to prevent sending ipc messages to polybar processes running under a different user.
-- Also for security reasons, the `polybar-msg` command will now only send messages to polybar processes running under the same user. See the [IPC documentation](https://polybar.readthedocs.io/en/stable/user/ipc.html) for what exactly this means.
+- Also for security reasons, the `polybar-msg` command will now only send messages to polybar processes running under the same user. See the [IPC documentation](https://polybar.readthedocs.io/user/ipc.html) for what exactly this means.
 
 ### Build
 - New dependency: [libuv](https://github.com/libuv/libuv). At least version 1.3 is required.
@@ -238,7 +313,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 - Empty color values are no longer treated as invalid and no longer produce an error.
 
-[Unreleased]: https://github.com/polybar/polybar/compare/3.6.3...HEAD
+[Unreleased]: https://github.com/polybar/polybar/compare/3.7.1...HEAD
+[3.7.1]: https://github.com/polybar/polybar/releases/tag/3.7.1
+[3.7.0]: https://github.com/polybar/polybar/releases/tag/3.7.0
 [3.6.3]: https://github.com/polybar/polybar/releases/tag/3.6.3
 [3.6.2]: https://github.com/polybar/polybar/releases/tag/3.6.2
 [3.6.1]: https://github.com/polybar/polybar/releases/tag/3.6.1

CMakeLists.txt

@@ -22,6 +22,14 @@ else()
   set(APP_VERSION "${version_txt}")
 endif()
 
+# Set the default installation prefix to /usr
+# Otherwise the default value is /usr/local which causes the default config
+# file to be installed to /usr/local/etc, with /usr, cmake has special handling
+# for this.
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+  set(CMAKE_INSTALL_PREFIX "/usr" CACHE PATH "Project-default installation prefix" FORCE)
+endif()
+
 list(APPEND CMAKE_MODULE_PATH
   ${PROJECT_SOURCE_DIR}/cmake
   ${PROJECT_SOURCE_DIR}/cmake/common
@@ -60,10 +68,9 @@ if(BUILD_TESTS)
   add_subdirectory(tests)
 endif()
 
-
 if(BUILD_CONFIG)
   install(FILES ${CMAKE_SOURCE_DIR}/doc/config.ini
-    DESTINATION /etc/${PROJECT_NAME}
+    DESTINATION ${CMAKE_INSTALL_FULL_SYSCONFDIR}/${PROJECT_NAME}
     COMPONENT config)
 endif()
 

CONTRIBUTING.md

@@ -53,7 +53,8 @@ PR being rejected because the feature you implemented was not actually something
 we want in polybar.
 
 Issues with any of the following labels are generally safe to start working on,
-unless someone else has already claimed them:
+unless they also have the `needs confirmation` label or someone else has
+already claimed them:
 
 * [bug](https://github.com/polybar/polybar/labels/bug)
 * [confirmed](https://github.com/polybar/polybar/labels/confirmed)
@@ -98,8 +99,9 @@ If possible, you should also add tests for the things you write.
 However, this is not always possible, for example when working on modules.
 But at least isolated components should be tested.
 
-See the [testing page](https://github.com/polybar/polybar/wiki/Testing) on the
-wiki for more information.
+See the [testing
+page](https://polybar.readthedocs.io/en/latest/dev/testing.html) in the
+documentation.
 Also don't hesitate to ask for help, testing isn't that mature in polybar yet
 and some things may be harder/impossible to test right now.
 
@@ -153,7 +155,8 @@ repo.
 
 ### Style
 
-Please read our [style guide](https://github.com/polybar/polybar/wiki/Style-Guide).
+Please read our [style
+guide](https://polybar.readthedocs.io/en/latest/dev/style-guide.html).
 
 ## Donations
 

README.md

@@ -1,5 +1,6 @@
 <p align="center">
-  <img src="banner.png" alt="Polybar">
+  <img src="doc/_static/banner.png#gh-light-mode-only" alt="Polybar">
+  <img src="doc/_static/banner-dark-mode.png#gh-dark-mode-only" alt="Polybar">
 </p>
 
 <p align="center">
@@ -40,6 +41,7 @@ for their desktop environment, without the need of having a black belt in shell
   * [Sponsors](#sponsors)
   * [Backers](#backers)
 * [License](#license)
+* [Signatures](#signatures)
 
 ## Introduction
 
@@ -92,15 +94,19 @@ list of available polybar packages.
 If you are using **Debian** (bullseye/11/stable) or later, you can install [polybar](https://tracker.debian.org/pkg/polybar)
 using `sudo apt install polybar`. Newer releases of polybar are sometimes provided in the [backports](https://wiki.debian.org/Backports)
 repository for stable users, you need to enable [backports](https://wiki.debian.org/Backports) and then install using
-`sudo apt -t buster-backports install polybar`.
+`sudo apt -t bullseye-backports install polybar`.
 
 If you are using **Ubuntu** 20.10 (Groovy Gorilla) or later, you can install polybar
 using `sudo apt install polybar`.
 
-If you are using **Arch Linux**, you can install the AUR package
-[polybar](https://aur.archlinux.org/packages/polybar/) to get the latest
-version, or [polybar-git](https://aur.archlinux.org/packages/polybar-git/) for
-the most up-to-date (unstable) changes.
+If you are using **Arch Linux**, you can install
+[polybar](https://archlinux.org/packages/community/x86_64/polybar/) to get the
+latest stable release using `sudo pacman -S polybar`. The latest unstable
+changes are also available in the
+[`polybar-git`](https://aur.archlinux.org/packages/polybar-git) package in the
+AUR.
+
+If you are using **Manjaro**, you can install [polybar](https://software.manjaro.org/package/polybar) to get the latest stable release using `sudo pacman -S polybar`.
 
 If you are using **Void Linux**, you can install [polybar](https://github.com/void-linux/void-packages/blob/master/srcpkgs/polybar/template) using `xbps-install -S polybar`.
 
@@ -110,16 +116,13 @@ If you are using **Slackware**, polybar is available from the [SlackBuilds](http
 
 If you are using **Source Mage GNU/Linux**, polybar spell is available in test grimoire and can be installed via `cast polybar`.
 
-If you are using **openSUSE Tumbleweed**, polybar is available from the
+If you are using **openSUSE Leap** or **openSUSE Tumbleweed**, polybar is available from the
 [official
-repositories](https://build.opensuse.org/package/show/openSUSE%3AFactory/polybar)
+repositories](https://build.opensuse.org/package/show/X11:Utilities/polybar)
 and can be installed via `zypper install polybar`.
+The package is available for openSUSE Leap 15.3 and above.
 
-If you are using **openSUSE Leap**, polybar is available from
-[OBS](https://build.opensuse.org/package/show/X11:Utilities/polybar/).
-The package is available for openSUSE Leap 15.1 and above.
-
-If you are using **FreeBSD**, [polybar](https://svnweb.freebsd.org/ports/head/x11/polybar/) can be installed using `pkg install polybar`. Make sure you are using the `latest` package branch.
+If you are using **FreeBSD**, [polybar](https://www.freshports.org/x11/polybar) can be installed using `pkg install polybar`. Make sure you are using the `latest` package branch.
 
 If you are using **Gentoo**, both release and git-master versions are available in the [main](https://packages.gentoo.org/packages/x11-misc/polybar) repository.
 
@@ -133,19 +136,23 @@ If you can't find your distro here, you will have to [build from source](https:/
 ## Community
 Want to get in touch?
 
-* Join our Gitter room at [gitter.im/polybar/polybar](https://gitter.im/polybar/polybar)
-* We have our own subreddit at [r/polybar](https://www.reddit.com/r/polybar).
-* Chat with us in the `#polybar` IRC channel on the [`irc.libera.chat:6697`](https://libera.chat/) server.
+* Visit our [Discussion page](https://github.com/polybar/polybar/discussions)
+* Join our Gitter room at [`gitter.im/polybar/polybar`](https://gitter.im/polybar/polybar)
+* We have our own subreddit at [`r/polybar`](https://www.reddit.com/r/polybar)
+* Chat with us in the `#polybar` IRC channel on the [`irc.libera.chat:6697`](https://libera.chat/) server
 
 ## Contributors
 
+### Maintainers
+* Patrick Ziegler [**@patrick96**](https://github.com/patrick96)
+
 ### Owner
 * Michael Carlberg [**@jaagr**](https://github.com/jaagr/)
 
-### Maintainers
+### Former Maintainers
+* [**@Lomadriel**](https://github.com/Lomadriel)
 * [**@NBonaparte**](https://github.com/NBonaparte)
 * Chase Geigle [**@skystrife**](https://github.com/skystrife)
-* Patrick Ziegler [**@patrick96**](https://github.com/patrick96)
 
 ### Logo Design by
 * [**@Tobaloidee**](https://github.com/Tobaloidee)
@@ -227,3 +234,9 @@ Polybar accepts donations through [open collective](https://opencollective.com/p
 ## License
 
 Polybar is licensed under the MIT license. [See LICENSE for more information](https://github.com/polybar/polybar/blob/master/LICENSE).
+
+## Signatures
+
+Release archives and tags are signed by a maintainer using GPG. Currently
+everything is signed by [Patrick Ziegler](https://www.patrickziegler.ch/gpg)
+with fingerprint `1D5791352D51A228D4DDDBA4521E5E03AEBCA1A7`

SUPPORT.md

@@ -1,14 +1,34 @@
-Getting Help
-============
+# Getting Help
 
 If you need help or troubleshooting tips or just have a question:
 
 * If applicable, go through our [debugging guide](https://github.com/polybar/polybar/wiki/Debugging-your-Config).
 * Read the [Known Issues page](https://github.com/polybar/polybar/wiki/Known-Issues), maybe others had the same issue before.
 * Read the [Wiki page](https://github.com/polybar/polybar/wiki) for the thing you have problems with.
-* Join our Gitter room at [gitter.im/polybar/polybar](https://gitter.im/polybar/polybar)
-* Ask in our reddit community at [r/polybar](https://www.reddit.com/r/polybar)
-* Join the official IRC channel `#polybar` on the [`irc.libera.chat:6697`](https://libera.chat/) network. If you don't get an answer try asking on [Gitter](https://gitter.im/polybar/polybar).
+* Ask your question on [GitHub Discussions](https://github.com/polybar/polybar/discussions)
+* Join our Gitter room at [`gitter.im/polybar/polybar`](https://gitter.im/polybar/polybar)
+* Ask in our reddit community at [`r/polybar`](https://www.reddit.com/r/polybar)
+* Join the official IRC channel `#polybar` on the [`irc.libera.chat:6697`](https://libera.chat/) network. This is IRC, you will need to be connected to receive answers.
 * Ask on [Unix & Linux StackExchange](https://unix.stackexchange.com/). Though not all questions may be suited over there, make sure you're [on topic](https://unix.stackexchange.com/help/on-topic).
 
-Please **do not** use the github issue tracker to ask for help or if you have a question, it is meant for bug reports and feature requests. Issues will be closed and you will be referred to the above resources.
+**Do not** use the GitHub issue tracker to ask for help or if you have questions, it is meant for bug reports.
+Issues will be closed and you will be referred to the above resources.
+
+## Asking Quality Questions
+
+Spending some time to precisely frame your question will save a lot of time.
+You will better understand your problem and may be able to solve it yourself
+and other will be able to better understand what you are asking.
+Here are some tips:
+
+* Be explicit and precise:
+  * What are you trying to achieve?
+  * What problems have you encountered while trying to achieve this?
+  * What is stopping you from overcoming these problems?
+* If a problem is difficult to describe, screenshots can help. Do not make
+  screenshots of your config file or error messages, copy-paste them as text.
+* Provide as much context as possible. In most cases this includes at least the following:
+  * Window Manager
+  * Polybar version
+  * Relevant portions of your config file. If you are not sure what is relevant, provide the whole thing.
+  * How you start polybar

cmake/02-opts.cmake

@@ -20,3 +20,5 @@ set(SETTING_PATH_MESSAGING_FIFO "/tmp/polybar_mqueue.%pid%"
   CACHE STRING "Path to file containing the current temperature")
 set(SETTING_PATH_TEMPERATURE_INFO "/sys/class/thermal/thermal_zone%zone%/temp"
   CACHE STRING "Path to file containing the current temperature")
+set(SETTING_PATH_THERMAL_ZONE_WILDCARD "/sys/class/thermal/thermal_zone*"
+  CACHE STRING "Wildcard path to different thermal zones")

cmake/04-targets.cmake

@@ -17,13 +17,23 @@ add_custom_target(uninstall
 # folders where the clang tools should operate
 set(CLANG_SEARCH_PATHS ${PROJECT_SOURCE_DIR}/src ${PROJECT_SOURCE_DIR}/include ${PROJECT_SOURCE_DIR}/tests)
 
-# Target: codeformat (clang-format) {{{
+# Runs clang-format on all source files
+add_custom_target(
+  clangformat
+  COMMAND ${PROJECT_SOURCE_DIR}/common/file-runner.py
+  --dirs ${CLANG_SEARCH_PATHS}
+  -- clang-format -style=file -i --verbose
+  )
 
-add_custom_target(codeformat)
-add_custom_command(TARGET codeformat
-  COMMAND ${PROJECT_SOURCE_DIR}/common/clang-format.sh ${CLANG_SEARCH_PATHS})
+# Dry-runs clang-format on all source files
+# Useful for CI since it will exit with an error code
+add_custom_target(
+  clangformat-dryrun
+  COMMAND ${PROJECT_SOURCE_DIR}/common/file-runner.py
+  --dirs ${CLANG_SEARCH_PATHS}
+  -- clang-format -style=file --dry-run -Werror --verbose
+  )
 
-# }}}
 # Target: codecheck (clang-tidy) {{{
 
 add_custom_target(codecheck)

cmake/05-summary.cmake

@@ -18,6 +18,7 @@ message_colored(STATUS "   BINDIR:  ${CMAKE_INSTALL_FULL_BINDIR}" "32")
 message_colored(STATUS "   DATADIR:    ${CMAKE_INSTALL_FULL_DATADIR}" "32")
 message_colored(STATUS "   DOCDIR:     ${CMAKE_INSTALL_FULL_DOCDIR}" "32")
 message_colored(STATUS "   MANDIR:     ${CMAKE_INSTALL_FULL_MANDIR}" "32")
+message_colored(STATUS "   SYSCONFDIR: ${CMAKE_INSTALL_FULL_SYSCONFDIR}" "32")
 
 message(STATUS " Targets:")
 colored_option("   polybar" BUILD_POLYBAR)

cmake/cxx.cmake

@@ -15,20 +15,19 @@ endif()
 option(CXXLIB_CLANG "Link against libc++" OFF)
 option(CXXLIB_GCC "Link against stdlibc++" OFF)
 
-set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
 set(THREADS_PREFER_PTHREAD_FLAG ON)
 
-
 set(POLYBAR_FLAGS "" CACHE STRING "C++ compiler flags used for compiling polybar")
 
-list(APPEND cxx_base -Wall -Wextra -Wpedantic)
-list(APPEND cxx_debug -DDEBUG -g2)
+list(APPEND cxx_base -Wall -Wextra -Wpedantic -Wdeprecated-copy-dtor)
+list(APPEND cxx_debug -DDEBUG -g2 -Og)
 list(APPEND cxx_minsizerel "")
-list(APPEND cxx_sanitize -O0 -g -fsanitize=address -fsanitize=undefined -fno-omit-frame-pointer -fno-optimize-sibling-calls)
-list(APPEND cxx_coverage --coverage)
+list(APPEND cxx_sanitize ${cxx_debug} -O0 -fsanitize=address -fsanitize=undefined -fno-omit-frame-pointer -fno-optimize-sibling-calls)
+list(APPEND cxx_coverage ${cxx_debug} --coverage)
 
 list(APPEND cxx_linker_base "")
 list(APPEND cxx_linker_minsizerel "")
@@ -79,8 +78,6 @@ elseif(CXXLIB_GCC)
   list(APPEND cxx_linker_base -lstdc++)
 endif()
 
-# Custom build type 'Coverage', inherits the debug flags
-list(APPEND cxx_coverage ${cxx_debug} ${cxx_coverage})
 SET(CMAKE_CXX_FLAGS_COVERAGE "${CMAKE_CXX_FLAGS_DEBUG} ${CMAKE_CXX_FLAGS_COVERAGE}")
 SET(CMAKE_EXE_LINKER_FLAGS_COVERAGE "${CMAKE_EXE_LINKER_FLAGS_DEBUG} ${CMAKE_EXE_LINKER_FLAGS_COVERAGE}")
 SET(CMAKE_SHARED_LINKER_FLAGS_COVERAGE "${CMAKE_SHARED_LINKER_FLAGS_DEBUG} ${CMAKE_SHARED_LINKER_FLAGS_COVERAGE}")

common/clang-format.sh

@@ -1,20 +0,0 @@
-#!/bin/sh
-
-main() {
-  if [ $# -lt 1 ]; then
-    echo "$0 DIR..." 1>&2
-    exit 1
-  fi
-
-  # Search paths
-  search="${*:-.}"
-
-  echo "$0 in $search"
-
-  # shellcheck disable=2086
-  find $search -regex ".*.[c|h]pp"                           \
-    -exec printf "\\033[32;1m** \\033[0mFormatting %s\\n" {} \; \
-    -exec clang-format -style=file -i {} \;
-}
-
-main "$@"

common/file-runner.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python3
+
+from pathlib import Path
+import sys
+import os
+import argparse
+import subprocess
+
+EXTENSIONS = set('.' + ext for ext in ['c', 'h', 'cpp', 'hpp', 'inl'])
+
+
+def get_files(dirs):
+    """
+    Generator which yields all files in the given directories with any of the
+    EXTENSIONS.
+    """
+    for dir in dirs:
+        for root, _, files in os.walk(dir):
+            for file in files:
+                path = Path(os.path.join(root, file))
+                if path.suffix in EXTENSIONS:
+                    yield path
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description="""
+        Run command on all C/C++ source files in the given directories
+        """)
+    parser.add_argument('--dirs', type=Path, nargs='+',
+                        help='Directories to search in')
+    parser.add_argument('command', nargs='+',
+                        help='Command to which to pass found files')
+    args = parser.parse_args()
+
+    all_files = list(str(file) for file in get_files(args.dirs))
+
+    if not all_files:
+        print("No files found")
+        sys.exit(1)
+
+    result = subprocess.run(args.command + all_files)
+    print(f'Formatted {len(all_files)} files')
+
+    if result.returncode != 0:
+        sys.exit(result.returncode)
+
+
+if __name__ == '__main__':
+    main()

contrib/polybar-dwm-module.aur/PKGBUILD

@@ -1,24 +1,22 @@
 # Maintainer: Patrick Ziegler <p.ziegler96@gmail.com>
 _pkgname=polybar
 pkgname="${_pkgname}-git"
-pkgver=3.5.7
+pkgver=3.6.3
 pkgrel=1
 pkgdesc="A fast and easy-to-use status bar"
-arch=("i686" "x86_64")
+# aarch64 is not officially supported by polybar, it is only listed here for convenience
+arch=("i686" "x86_64" "aarch64")
 url="https://github.com/polybar/polybar"
 license=("MIT")
 depends=("libuv" "cairo" "xcb-util-image" "xcb-util-wm" "xcb-util-xrm"
          "xcb-util-cursor" "alsa-lib" "libpulse" "libmpdclient" "libnl"
          "jsoncpp" "curl")
-optdepends=("i3-wm: i3 module support"
-            "ttf-unifont: Font used in example config"
-            "siji-git: Font used in example config"
-            "xorg-fonts-misc: Font used in example config")
+optdepends=("i3-wm: i3 module support")
 makedepends=("cmake" "git" "python" "pkg-config" "python-sphinx"
              "python-packaging" "i3-wm")
+backup=("etc/polybar/config.ini")
 provides=("polybar")
 conflicts=("polybar")
-install="${_pkgname}.install"
 source=("${_pkgname}::git+${url}.git")
 sha256sums=("SKIP")
 

contrib/polybar.aur/PKGBUILD

@@ -1,36 +0,0 @@
-# Maintainer: Patrick Ziegler <p.ziegler96@gmail.com>
-pkgname=polybar
-pkgver=3.5.7
-pkgrel=1
-pkgdesc="A fast and easy-to-use status bar"
-arch=("i686" "x86_64")
-url="https://github.com/polybar/polybar"
-license=("MIT")
-depends=("cairo" "xcb-util-image" "xcb-util-wm" "xcb-util-xrm" "xcb-util-cursor"
-         "alsa-lib" "libpulse" "libmpdclient" "libnl" "jsoncpp" "curl")
-optdepends=("i3-wm: i3 module support"
-            "ttf-unifont: Font used in example config"
-            "siji-git: Font used in example config"
-            "xorg-fonts-misc: Font used in example config")
-makedepends=("cmake" "python" "pkg-config" "python-sphinx" "python-packaging" "i3-wm")
-conflicts=("polybar-git")
-install="${pkgname}.install"
-source=(${url}/releases/download/${pkgver}/${pkgname}-${pkgver}.tar.gz)
-sha256sums=('73210e6d74217acb953b253990b4302343b7b6a7870fe1da9a1855daa44123db')
-_dir="${pkgname}-${pkgver}"
-
-prepare() {
-  mkdir -p "${_dir}/build"
-}
-
-build() {
-  cd "${_dir}/build" || exit 1
-  # Force cmake to use system python (to detect xcbgen)
-  cmake -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=Release -DPYTHON_EXECUTABLE=/usr/bin/python3 ..
-  cmake --build .
-}
-
-package() {
-  cmake --build "${_dir}/build" --target install -- DESTDIR="${pkgdir}"
-  install -Dm644 "${_dir}/LICENSE" "${pkgdir}/usr/share/licenses/${pkgname}/LICENSE"
-}

doc/_templates/layout.html

@@ -0,0 +1,26 @@
+{% extends "!layout.html" -%}
+{# Refer to https://github.com/readthedocs/sphinx_rtd_theme/blob/master/sphinx_rtd_theme/layout.html #}
+
+{%- block document %}
+{#
+  Adds a warning message on the 'latest' version.
+  The warning is only added on readthedocs, if the version is 'latest'.
+  For the 'dev' folder, no warning is shown since the 'latest' version is
+  usually the most up-to-date.
+#}
+{% if READTHEDOCS and polybar_is_latest and not pagename.startswith('dev/') %}
+<div class="admonition important">
+  <p class="admonition-title">Development Version</p>
+  <p>
+  This is the <code class="docutils literal notranslate"><span class="pre">latest</span></code>
+  (unstable) version of this documentation, which may document features
+  not available in or compatible with released stable versions of polybar.
+  </p>
+  <p>
+  See the <a href="https://polybar.readthedocs.io/{{ pagename }}.html">stable version</a> of this documentation page instead.
+  </p>
+</div>
+{% endif %}
+
+{{ super() }}
+{%- endblock %}

doc/conf.py

@@ -18,6 +18,10 @@ import datetime
 import sphinx
 import packaging.version
 
+from sphinx.util.docfields import Field
+from sphinx.locale import _
+
+
 def get_version(root_path):
     """
     Reads the polybar version from the version.txt at the root of the repo.
@@ -32,8 +36,12 @@ def get_version(root_path):
 
     raise RuntimeError("No version found in {}".format(path))
 
+
+sphinx_version = packaging.version.parse(sphinx.__version__)
+
 # -- Project information -----------------------------------------------------
 
+
 project = 'Polybar User Manual'
 copyright = '2016-{}, Michael Carlberg & contributors'.format(
     datetime.datetime.now().year
@@ -77,6 +85,16 @@ version_txt = get_version(Path(doc_path).absolute().parent)
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 extensions = [
+    "sphinx.ext.extlinks",
+]
+
+if on_rtd:
+    extensions += [
+        # The custom 404 page is only needed
+        "notfound.extension",
+        # The search extension works only on readthedocs
+        # See https://readthedocs-sphinx-search.readthedocs.io
+        "sphinx_search.extension",
     ]
 
 # Add any paths that contain templates here, relative to this directory.
@@ -96,7 +114,7 @@ master_doc = 'index'
 #
 # This is also used if you do content translation via gettext catalogs.
 # Usually you set "language" from the command line for these cases.
-language = None
+# language = None
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
@@ -110,22 +128,45 @@ highlight_language = 'none'
 
 smartquotes = False
 
+# Quickly link to issues or PRs using :issue:`...` or :pull:`...`
+if sphinx_version >= packaging.version.parse("4.0.0"):
+    extlinks = {
+        "issue": ("https://github.com/polybar/polybar/issues/%s", "#%s"),
+        "pull": ("https://github.com/polybar/polybar/pull/%s", "PR #%s"),
+    }
+else:
+    # Versions before 4.0 (e.g. on readthedocs) do not support %s in the
+    # caption and simply append the value
+    extlinks = {
+        "issue": ("https://github.com/polybar/polybar/issues/%s", "#"),
+        "pull": ("https://github.com/polybar/polybar/pull/%s", "PR #"),
+    }
+
+extlinks_detect_hardcoded_links = True
+
 
 # -- Options for HTML output -------------------------------------------------
 
+# Theme options are theme-specific and customize the look and feel of a theme
+# further.  For a list of options available for each theme, see the
+# documentation.
+#
+html_theme_options = {}
+
+html_context = {
+        'polybar_is_latest': version == 'latest',
+}
+
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
 if on_rtd or os.environ.get('USE_RTD_THEME', '0') == '1':
     html_theme = 'sphinx_rtd_theme'
+    html_theme_options['collapse_navigation'] = False
+    html_theme_options['style_external_links'] = True
 else:
     html_theme = 'alabaster'
-
-# Theme options are theme-specific and customize the look and feel of a theme
-# further.  For a list of options available for each theme, see the
-# documentation.
-#
-# html_theme_options = {}
+    html_theme_options['description'] = version
 
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
@@ -183,9 +224,18 @@ latex_documents = [
 # One entry per manual page. List of tuples
 # (source start file, name, description, authors, manual section).
 man_pages = [
-    ('man/polybar.1', 'polybar', 'A fast and easy-to-use tool status bar', [], 1),
-    ('man/polybar-msg.1', 'polybar-msg', 'Send IPC messages to polybar', [], 1),
-    ('man/polybar.5', 'polybar', 'configuration file for polybar(1)', [], 5)
+    (
+        'man/polybar.1', 'polybar',
+        'A fast and easy-to-use tool status bar', [], 1
+    ),
+    (
+        'man/polybar-msg.1', 'polybar-msg',
+        'Send IPC messages to polybar', [], 1
+    ),
+    (
+        'man/polybar.5', 'polybar',
+        'configuration file for polybar(1)', [], 5
+    )
 ]
 
 man_make_section_directory = False
@@ -223,19 +273,66 @@ epub_exclude_files = ['search.html']
 # The 'versionadded' and 'versionchanged' directives are overridden.
 suppress_warnings = ['app.add_directive']
 
+
+def setup(app):
+
+    # Adds a new directive for document a polybar config setting
+    # Inside goes the description of the option as well as custom roles to
+    # document the type, default value, etc:
+    # .. poly-setting:: NAME
+    #
+    #   Description
+    #   :type: ...
+    #   :default: ...
+    app.add_object_type(
+        'poly-setting',
+        'poly-setting',
+        objname='configuration value',
+        indextemplate='pair: %s; configuration value',
+        doc_field_types=[
+            Field('type',
+                  label=_("Type"),
+                  names=['type'],
+                  has_arg=False,
+                  ),
+            Field('tags',
+                  label=_("Available Tags"),
+                  names=['tags'],
+                  has_arg=False,
+                  ),
+            Field('tokens',
+                  label=_("Supported Tokens"),
+                  names=['tokens'],
+                  has_arg=False,
+                  ),
+            Field('default',
+                  label=_("Default Value"),
+                  names=['default'],
+                  has_arg=False,
+                  ),
+        ]
+    )
+
+    try:
+        inject_version_directives(app)
+    except NameError:
+        # Function was not defined because sphinx version was too low
+        pass
+
+
 # It is not exactly clear in which version the VersionChange class was
 # introduced, but we know it is available in at least 1.8.5.
 # This feature is mainly needed for the online docs on readthedocs for the docs
 # built from master, documentation built for proper releases should not even
 # mention unreleased changes. Because of that it's not that important that this
 # is added to local builds.
-if packaging.version.parse(sphinx.__version__) >= packaging.version.parse("1.8.5"):
+if sphinx_version >= packaging.version.parse("1.8.5"):
 
     from typing import List
     from docutils.nodes import Node
     from sphinx.domains.changeset import VersionChange
 
-  def setup(app):
+    def inject_version_directives(app):
         app.add_directive('deprecated', VersionDirective)
         app.add_directive('versionadded', VersionDirective)
         app.add_directive('versionchanged', VersionDirective)
@@ -243,8 +340,10 @@ if packaging.version.parse(sphinx.__version__) >= packaging.version.parse("1.8.5
     class VersionDirective(VersionChange):
         """
         Overwrites the Sphinx directive for versionchanged, versionadded, and
-    deprecated and adds an unreleased tag to versions that are not yet released
+        deprecated and adds an unreleased tag to versions that are not yet
+        released
         """
+
         def run(self) -> List[Node]:
             directive_version = packaging.version.parse(self.arguments[0])
             parsed_version_txt = packaging.version.parse(version_txt)

doc/config.ini

@@ -58,14 +58,18 @@ cursor-scroll = ns-resize
 
 enable-ipc = true
 
-; tray-position = right
-
 ; wm-restack = generic
 ; wm-restack = bspwm
 ; wm-restack = i3
 
 ; override-redirect = true
 
+[module/systray]
+type = internal/tray
+
+format-margin = 8pt
+tray-spacing = 16pt
+
 [module/xworkspaces]
 type = internal/xworkspaces
 

doc/dev/getting-started.rst

@@ -0,0 +1,41 @@
+Getting Started
+===============
+
+Setting up polybar for development is basically the same process as `compiling
+it from source <https://github.com/polybar/polybar/wiki/Compiling>`_.
+However, we recommend using the ``Debug`` or ``Sanitize`` cmake build type when
+configuring the project:
+
+.. code-block:: shell
+
+  cmake -DCMAKE_BUILD_TYPE=Debug ..
+  # Or
+  cmake -DCMAKE_BUILD_TYPE=Sanitize ..
+
+This will give you debug symbols in the executable and the ``Sanitize`` build
+type will also enable the ``AddressSanitizer`` and
+``UndefinedBehaviorSanitizer``, which can give you very useful information
+about crashes and undefined behavior at runtime.
+
+Editors
+-------
+
+Since this is a cmake project, most IDEs will have built-in support or a plugin
+to automatically setup this project.
+
+In addition, the ``cmake`` command creates a ``compile_commands.json`` file in
+the build folder, which can be used by many `language servers
+<https://microsoft.github.io/language-server-protocol/>`_.
+If you are using a C++ language server in your editor, it should be as easy as
+symlinking the ``compile_commands.json`` into the repo root directory:
+
+.. code-block:: shell
+
+  ln -s build/compile_commands.json .
+
+Distro-Specific Setup
+---------------------
+
+The wiki contains user-contributed `setup tips
+<https://github.com/polybar/polybar/wiki/Distro-Specific-Setup>`_ for some
+distros.

doc/dev/packaging.rst

@@ -78,9 +78,8 @@ Instead of ``sudo make install``, you will most likely want to use
 Finishing Up
 ------------
 
-Finally, subscribe to our `GitHub thread for package maintainers
-<https://github.com/polybar/polybar/issues/1971>`_ to get notified about new
-releases and changes to how polybar is built.
+Finally, subscribe to our :issue:`GitHub thread for package maintainers <1971>`
+to get notified about new releases and changes to how polybar is built.
 If you want to, you can also open a PR to add your package to the `Getting
 Started <https://github.com/polybar/polybar#getting-started>`_ section of our
 README.

doc/dev/release-workflow.rst

@@ -90,8 +90,8 @@ branch and cherry-picks the bugfix commits.
 
   Alternatively, the contributor can also ``git rebase --onto`` to base the
   branch off the previous release tag. However, in most cases it makes sense for
-  a maintainer to create the release branch since they will also need to add a
-  `Release Commit`_ to it.
+  a maintainer to create the release branch since they will also need to create
+  a `Release PR`_ for it.
 
 Once the release branch is created and contains the right commits, the
 maintainer should follow `Publishing a new Release`_ to finish this patch
@@ -110,13 +110,19 @@ Publishing a new Release
 The process for publishing a release is the same for all release types. It goes
 as follows:
 
-* A `Release commit`_ is added to the tip of the release branch.
-* A draft PR is opened for the release branch. This PR MUST NOT be merged in
+* A `Release PR`_ is created for the release. This PR MUST NOT be merged in
   GitHub's interface, it is only here for review, merging happens at the
   commandline.
-* A `draft release`_ is created in GitHub's release publishing tools
-* After approval, the GitHub release publishing tool is used to publish the
-  release and tag the tip of the release branch (the release commit).
+* After approval, a signed git tag without message is created locally at the
+  tip of the release branch and pushed:
+
+.. code-block:: shell
+
+  git tag -m "" -s X.Y.Z <release-branch>
+  git push --tags
+
+* A `draft release`_ targetting the new tag is created in GitHub's release
+  publishing tools and published.
 * After the tag is created, the release branch is manually merged into
   ``master``.
   Here it is vitally important that the history of the release branch does not
@@ -136,16 +142,23 @@ as follows:
 Here ``<release-branch>`` is either a ``release/X.Y.0`` branch or a
 ``hotfix/X.Y.Z`` branch.
 
-Release Commit
-~~~~~~~~~~~~~~
+Release PR
+~~~~~~~~~~
 
-When merging, a release commit must be at the tip of the release branch.
+The final state of the release branch is prepared as a draft PR on
+GitHub.
+That PR is not merged from the GitHub interface though.
 
-The release commit needs to update the version number in:
+The release PR must do the following things:
 
-* ``version.txt``
+* Write any missing migration guides for:
 
-The release commit must also finalize the `Changelog`_ for this release.
+  * Deprecated or removed options
+  * New features that it might be worth migrating to
+* Have a release commit at its tip with the message ``Version X.Y.Z`` and the following changes
+
+  * Finalizes the `Changelog`_ for this release
+  * Updates the version number in ``version.txt``
 
 Changelog
 ~~~~~~~~~
@@ -193,8 +206,8 @@ Draft Release
 
 On `GitHub <https://github.com/polybar/polybar/releases/new>`_ a new release
 should be drafted.
-The release targets the tip of the release branch (the release commit), the
-name of the release and the tag is simply the release number.
+The release targets the git tag that was just pushed, the name of the release
+and the tag is simply the release number.
 
 The content of the release message should contain the changelog copied from
 ``CHANGELOG.md`` under the heading ``## Changelog``.
@@ -202,23 +215,30 @@ In addition using GitHub's "Auto-generate release notes" feature, the list of
 new contributors should be generated and put at the end of the release notes.
 The generated list of PRs can be removed.
 
+For minor and major releases, add a link to the migration guide directly under
+the ``## Changelog`` header:
+
+.. code-block:: markdown
+
+  **[Migration Guide](https://polybar.readthedocs.io/en/stable/migration/X.Y/index.html)**
+
+At the bottom, check the two boxes "Set as the latest release" and "Create a
+discussion for this release" (select the category "Announcements").
+
 After-Release Checklist
 ~~~~~~~~~~~~~~~~~~~~~~~
 
-* Make sure all the new functionality is documented on the wiki
+* Verify the release archive (see `Verify Release`_)
+* Update the Wiki
+
+  * Make sure all the new functionality is documented
   * Mark deprecated features appropriately (see `Deprecations`_)
-* Remove all unreleased notes from the wiki (not for patch releases)
-* Inform packagers of new release in `#1971
-  <https://github.com/polybar/polybar/issues/1971>`_. Mention any dependency
+  * Remove all "unreleased" notes (not for patch releases)
+* Inform packagers of new release in :issue:`1971`. Mention any dependency
   changes and any changes to the build workflow. Also mention any new files are
   created by the installation.
-* Confirm that the release archive was added to the release.
-  We have a GitHub action workflow called 'Release Workflow' that on every
-  release automatically creates a release archive, uploads it to the release,
-  and adds a 'Download' section to the release body.
-  If this fails for some reason, it should be triggered manually.
-* Create a PR that updates the AUR ``PKGBUILD`` files for the ``polybar`` and
-  ``polybar-git`` packages (push after the release archive is uploaded).
+* Create a PR that updates the AUR ``PKGBUILD`` file for the ``polybar-git``
+  package (push after the release archive is uploaded).
 * Close the `GitHub Milestone <https://github.com/polybar/polybar/milestones>`_
   for the new release and move open issues (if any) to a later release.
 * Activate the version on `Read the Docs
@@ -226,6 +246,24 @@ After-Release Checklist
   previous versions for the same minor release (e.g. for 3.5.4, deactivate all
   other 3.5.X versions).
 
+Verify Release
+~~~~~~~~~~~~~~
+
+Confirm that the release archive was added to the release.
+We have a GitHub action workflow called 'Release Workflow' that on every
+release automatically creates a release archive, uploads it to the release,
+and adds a 'Download' section to the release body.
+If this fails for some reason, it should be triggered manually.
+
+Afterwards, download the archive, verify its hash, and sign it:
+
+.. code-block:: shell
+
+  gpg --armor --detach-sign polybar-X.Y.Z.tar.gz
+
+Finally, upload the generated ``polybar-X.Y.Z.tar.gz.asc`` to the GitHub
+release.
+
 Deprecations
 ~~~~~~~~~~~~
 

doc/dev/style-guide.rst

@@ -0,0 +1,75 @@
+Style Guide
+===========
+
+There is a ``.editorconfig`` and a ``.clang-format`` file in the project root
+that defines some basic guidelines, mainly relating to indentation.
+
+Code Formatting
+---------------
+
+We use ``clang-format`` for code formatting, the style rules are defined in
+``.clang-format``, before submitting a PR, make sure to run the following command
+on all the C++ files you changed:
+
+.. code-block:: shell
+
+  clang-format -style=file -i <FILES>
+
+**Note:** Depending on which file you change, this may produce a lot of changes
+because we have not run ``clang-format`` on all files in the project. This is
+fine.
+
+Indentation
+~~~~~~~~~~~
+
+Files use 2 spaces for indentation.
+
+Line Width
+~~~~~~~~~~
+
+Lines should not be longer than 120 characters, ``clang-format`` will enforce
+this when run. However, try to keep lines under 80 characters if it seems
+reasonable in the current situation.
+
+In some cases it makes sense to have lines longer than 80 characters for
+readability. But long lines can just the same be unreadable, for example if you
+have long if-conditions or use complex expressions as function parameters. Make
+sure you only use longer lines if keeping it under 80 would be less readable.
+
+Comments
+--------
+
+Use Doxygen ``/** */`` comments in front of functions, methods, types, members and
+classes:
+
+.. code-block:: cpp
+
+  /**
+   * @brief Generates a config object from a config file
+   *
+   * For modularity the parsing and storing of the config is separated
+   */
+  class config_parser {
+  ...
+    /**
+     * @brief Is used to resolve ${root...} references
+     */
+    string m_barname;
+  ...
+  }
+
+For all other comments use ``//`` for single-line and ``/* */`` for multi-line comments.
+
+Your comments should describe the intent and purpose of your code, not necessarily what it does.
+
+Header Files
+------------
+
+Header files should end in ``.hpp``.
+
+We use pragmas instead of include guards to guarantee header files are included
+only once:
+
+.. code-block:: cpp
+
+  #pragma once

doc/dev/testing.rst

@@ -0,0 +1,26 @@
+Testing
+=======
+
+Polybar uses `googletest <https://google.github.io/googletest/>`_ as its
+testing and mocking framework.
+Tests live in the ``tests/`` directory; they can be enabled during cmake with
+``-DBUILD_TESTS=ON`` and compiled with ``make all_unit_tests``.
+
+Each test gets its own executable in ``build/tests``, which can be executed to run
+a specific test.
+
+Running all tests is preferably done with the following command:
+
+.. code-block:: shell
+
+  make check
+
+This runs all available tests and prints the output in color for failed tests
+only.
+
+Adding New Tests
+----------------
+
+All new tests need to be added to the ``tests/CMakeLists.txt`` file. Have a look
+at the other unit tests in ``tests/unit_tests`` to see how to write tests for your
+code.

doc/index.rst

@@ -14,6 +14,10 @@ Welcome to the official polybar documentation.
 
    user/actions
    user/ipc
+   user/modules/index
+   user/fonts/index
+   user/default-config
+   migration/index
 
 .. toctree::
    :maxdepth: 1
@@ -33,6 +37,9 @@ Welcome to the official polybar documentation.
    :maxdepth: 1
    :caption: Developer Documentation:
 
+   dev/getting-started
+   dev/style-guide
+   dev/testing
    dev/release-workflow
 
 Getting Help

doc/migration/3.7/index.rst

@@ -0,0 +1,40 @@
+Migrating From Version 3.6 to 3.7
+=================================
+
+Text Module (``custom/text``)
+-----------------------------
+
+Using ``content`` to specify the text of the module is deprecated in favor of
+using the same concepts as all other modules (formats and labels).
+
+For example, the following text module:
+
+.. code-block:: dosini
+
+  [module/text]
+  type = custom/text
+  content = Hello World
+  content-foreground = #ff0000
+
+Should now look like this:
+
+.. code-block:: dosini
+
+  [module/text]
+  type = custom/text
+  label = Hello World
+  label-foreground = #ff0000
+
+Because it is set to its default value, the ``format`` setting can also be
+completely left out.
+
+In general, all properties on ``content`` also apply the same on ``label``
+(e.g. ``background``, ``font``), except for ``offset``,
+``prefix``, ``suffix`` (and their sub-properties).
+Those three properties have to instead be applied to ``format`` (e.g.
+``format-offset``).
+
+System Tray
+-----------
+
+.. include:: tray.rst

doc/migration/3.7/tray.rst

@@ -0,0 +1,57 @@
+..
+  File included directly in other pages describing migrating to the new tray module
+
+Polybar version 3.7 introduced the new tray module and deprecated the legacy
+tray implementation which uses ``tray-position`` to position the tray.
+You should switch over to the tray module as soon as possible.
+
+The legacy tray was configured in the `bar section
+<https://github.com/polybar/polybar/wiki/Configuration#bar-settings>`_, the
+setting for the module live in that module's section of the config file.
+The settings in the bar section don't always directly correspond to an
+equivalent setting in the module section for the new tray module.
+
+The following lists how each old setting in the bar section should be migrated:
+
+``tray-position``
+  The tray is now positioned as a module and so its positioning is done by
+  placing it where you want it to appear in one of the three module lists
+  ``modules-left``, ``modules-center``, ``modules-right``.
+
+``tray-detached``
+  This setting does not have an equivalent, detaching the tray is no longer
+  possible.
+
+``tray-maxsize``
+  The :poly-setting:`tray-size` setting now determines the size of tray icons.
+
+``tray-transparent``
+  Was already deprecated and does not exist in the tray module.
+  Transparency is enabled automatically if a transparent background is used.
+
+``tray-background``
+  Also exists in the module section (see :poly-setting:`tray-background`). Now,
+  the setting only applies to the icons themselves and no longer to the space
+  around them.
+
+``tray-foreground``
+  Also exists in the module section with the same functionality (see
+  :poly-setting:`tray-foreground`).
+
+``tray-offset-x``, ``tray-offset-y``
+  Has no direct equivalent in the module settings. Horizontally, the tray can
+  be moved in the same way other module content can be moved; by reordering the
+  modules or using things like ``format-offset``, ``format-margin``, or
+  ``format-padding``.
+  The tray can't be moved vertically.
+
+  In any case, the tray can no longer be moved outside of the bar window.
+
+``tray-padding``
+  Spacing between tray icons works a bit different now and needs to be
+  completely reconfigured (see :poly-setting:`tray-padding` and
+  :poly-setting:`tray-spacing`).
+
+``tray-scale``
+  No longer exist. The size of the icons is solely determined by
+  :poly-setting:`tray-size`.

doc/migration/index.rst

@@ -0,0 +1,24 @@
+Polybar Migration Guides
+========================
+
+Updating polybar to the newest version often requires updating your
+configuration files to use the newest features and replace outdated settings.
+
+Starting from version 3.7, we include a small guide here for how to migrate
+from the previous version.
+If you are upgrading over multiple versions (e.g. from 3.5 to 3.7), also read
+the migration guides for all versions in between.
+
+For migration guides before version 3.7, please look at our `release blog posts
+<https://polybar.github.io/blog/>`_.
+
+When upgrading make sure to run polybar from the terminal and look for errors,
+warnings, and deprecation messages.
+This can save you a lot of issues in the future when deprecated settings and
+features are removed.
+
+.. toctree::
+   :maxdepth: 1
+   :caption: Guides
+
+   3.7/index

doc/requirements.txt

@@ -0,0 +1,7 @@
+# Installing these packages is only really needed on readthedocs, building
+# locally works as long as sphinx is installed.
+# For local development, you may want to install some of these though.
+sphinx~=7.2.6
+sphinx-rtd-theme~=2.0.0rc2
+sphinx-notfound-page~=1.0.0
+readthedocs-sphinx-search~=0.3.1

doc/user/default-config.rst

@@ -0,0 +1,16 @@
+Default Configuration
+=====================
+
+.. versionadded:: 3.6.0
+
+Polybar's default configuration lives in ``/etc/polybar/config.ini`` and is
+loaded if no other configuration file can be found.
+
+
+.. image:: ../_static/default.png
+   :alt: Screenshot of default polybar configuration
+
+.. literalinclude:: ../config.ini
+   :language: ini
+   :linenos:
+   :caption: :download:`Download <../config.ini>`

doc/user/fonts/index.rst

@@ -0,0 +1,8 @@
+Fonts
+=====
+
+.. toctree::
+   :maxdepth: 1
+
+   Wiki <https://github.com/polybar/polybar/wiki/Fonts>
+   Nerd Fonts <nerd-fonts>

doc/user/fonts/nerd-fonts.rst

@@ -0,0 +1,54 @@
+Nerd Fonts
+==========
+
+`Nerd Fonts <https://www.nerdfonts.com/>`_ (`GitHub
+<https://github.com/ryanoasis/nerd-fonts/>`_) is a project that patches
+together a textual font with font icons (or glyphs) from other projects (e.g.
+`Font Awesome <https://github.com/FortAwesome/Font-Awesome>`_, `Material Design
+Icons <https://github.com/Templarian/MaterialDesign>`_, etc.) into a single
+font.
+
+In polybar, just using nerd fonts can lead to some issues:
+
+* Cut-off Characters
+* Overlapping
+* No Spacing
+
+These look something like this:
+
+.. image:: /_static/nerd-fonts/bad.png
+   :alt: Showcase of the three issues listed above.
+
+This behavior is intrinsic to Nerd Fonts and is described in more detail `here
+<https://github.com/ryanoasis/nerd-fonts/issues/442#issuecomment-1263358904>`_.
+Also see :issue:`991` for more information.
+
+**To resolve these issues, we recommend using Nerd Fonts like this:**
+
+The monospaced variants of the different Nerd Fonts (all characters have the
+same width) don't have this issue.
+However, then you often have the problem that the icons are too small and that
+their size cannot be set independently of the text.
+
+Due to that, we recommend using ``Symbols Nerd Font Mono`` (available for
+`download <https://github.com/ryanoasis/nerd-fonts/releases/>`_ as
+``NerdFontsSymbolsOnly.zip``).
+This font only contains the nerd font icons and no text.
+For the text, simply use any non-Nerd Font:
+
+.. code-block:: ini
+
+  font-0 = "Liberation Mono:size=20"
+  font-1 = "Symbols Nerd Font Mono:size=26"
+
+Now the icon sizes can be adjusted separately to get the best experience.
+This solves all three problems shown above:
+
+.. image:: /_static/nerd-fonts/good.png
+   :alt: The same config as in the previous screenshot but using ``Symbols Nerd
+         Font Mono`` for the font icons
+
+.. note::
+
+   In the overlap example, there is no space between the icon and text, that's
+   why they're so close together.

doc/user/modules/defs.rst

@@ -0,0 +1,13 @@
+.. highlight:: ini
+
+..
+  Substitutions for quickly referencing different config value types
+
+.. |type-format| replace:: `format <type-format_>`_
+.. |type-extent| replace:: `extent <type-extent_>`_
+.. |type-pwo| replace:: `percentage with offset <type-pwo_>`_
+.. |type-color| replace:: color
+
+.. _type-format: https://github.com/polybar/polybar/wiki/Formatting#formats
+.. _type-extent: https://github.com/polybar/polybar/wiki/Formatting#extent
+.. _type-pwo: https://github.com/polybar/polybar/wiki/Formatting#percentage-with-offset

doc/user/modules/index.rst

@@ -0,0 +1,31 @@
+Modules
+=======
+
+.. toctree::
+   :maxdepth: 1
+
+   System Tray <tray>
+
+   Alsa <https://github.com/polybar/polybar/wiki/Module:-alsa>
+   Backlight <https://github.com/polybar/polybar/wiki/Module:-backlight>
+   Battery <https://github.com/polybar/polybar/wiki/Module:-battery>
+   bspwm <https://github.com/polybar/polybar/wiki/Module:-bspwm>
+   CPU <https://github.com/polybar/polybar/wiki/Module:-cpu>
+   Date and Time <https://github.com/polybar/polybar/wiki/Module:-date>
+   Filesystem <https://github.com/polybar/polybar/wiki/Module:-filesystem>
+   GitHub <https://github.com/polybar/polybar/wiki/Module:-github>
+   i3 <https://github.com/polybar/polybar/wiki/Module:-i3>
+   Inter-process-messaging (IPC) <https://github.com/polybar/polybar/wiki/Module:-ipc>
+   Memory <https://github.com/polybar/polybar/wiki/Module:-memory>
+   Menu <https://github.com/polybar/polybar/wiki/Module:-menu>
+   MPD <https://github.com/polybar/polybar/wiki/Module:-mpd>
+   Network <https://github.com/polybar/polybar/wiki/Module:-network>
+   PulseAudio <https://github.com/polybar/polybar/wiki/Module:-pulseaudio>
+   Script <https://github.com/polybar/polybar/wiki/Module:-script>
+   Temperature <https://github.com/polybar/polybar/wiki/Module:-temperature>
+   Text <https://github.com/polybar/polybar/wiki/Module:-text>
+   XBacklight <https://github.com/polybar/polybar/wiki/Module:-xbacklight>
+   XKeyboard <https://github.com/polybar/polybar/wiki/Module:-xkeyboard>
+   XWindow <https://github.com/polybar/polybar/wiki/Module:-xwindow>
+   XWorkspaces <https://github.com/polybar/polybar/wiki/Module:-xworkspaces>
+   User contributed modules <https://github.com/polybar/polybar/wiki/User-contributed-modules>

doc/user/modules/tray.rst

@@ -0,0 +1,116 @@
+.. include:: defs.rst
+
+Tray Module
+===========
+.. poly-setting:: type = internal/tray
+
+.. versionadded:: 3.7.0
+
+The tray module displays system tray application icons on the bar.
+
+This module is a bit different from the other modules.
+The tray icons (also called clients) are individual windows managed by their
+respective application (e.g. the Dropbox tray icon is created and managed by
+the Dropbox application).
+Polybar is only responsible for embedding the windows in the bar and
+positioning them correctly.
+
+.. note::
+
+   Only a single instance of this module can be active at the same time (across
+   all polybar instances).
+
+   The way the `system tray protocol <systray-spec_>`_ works, at most one tray
+   can exist at any time.
+   Polybar will produce a warning if additional tray instances are created.
+
+For transparent background colors, the tray will use pseudo-transparency, true
+transparency is not possible for the tray icons.
+
+Formats
+-------
+
+The module only has a single format:
+
+.. poly-setting:: format
+
+  :type: |type-format|
+  :tags: ``<tray>``: Shows tray icons
+  :default: ``<tray>``
+
+Settings
+--------
+
+.. poly-setting:: tray-spacing
+
+  Space added between tray icons
+
+  :type: |type-extent|, non-negative
+  :default: ``0px``
+
+.. poly-setting:: tray-padding
+
+  Space added before and after each tray icon
+
+  :type: |type-extent|, non-negative
+  :default: ``0px``
+
+.. poly-setting:: tray-size
+
+  Size of individual tray icons
+
+  :type: |type-pwo|, relative to bar height, non-negative
+  :default: 66%
+
+.. poly-setting:: tray-background
+
+  Background color of tray icons
+
+  .. note::
+    This only affects the color of the individual icons and not the space in
+    between, changing this setting to anything else than the bar background
+    will likely not look good unless the background color is also changed for
+    the rest of the tray module (e.g. with ``format-background``).
+
+  :type: |type-color|
+  :default: ``${root.background}``
+
+.. poly-setting:: tray-foreground
+
+  Tray icon color
+
+  This serves as a hint to the tray icon application for which color to use for
+  the icon.
+
+  This is not guaranteed to have any effect (likely only in GTK3) because it
+  targets a non-standard part of the `system tray protocol <systray-spec_>`_ by
+  setting the ``_NET_SYSTEM_TRAY_COLORS`` atom on the tray window.
+
+  :type: |type-color|
+  :default: ``${tray-foreground}``
+
+
+Example
+-------
+
+::
+
+  [module/tray]
+  type = internal/tray
+
+  format-margin = 8px
+  tray-spacing = 8px
+
+Migrating From Legacy Tray Implementation
+-----------------------------------------
+
+.. include:: /migration/3.7/tray.rst
+
+References
+----------
+
+* `System Tray Protocol Specification <systray-spec_>`_
+* `XEmbed Protocol Specification <xembed_>`_
+
+.. _systray-spec: https://specifications.freedesktop.org/systemtray-spec/systemtray-spec-latest.html
+.. _xembed: https://specifications.freedesktop.org/xembed-spec/xembed-spec-latest.html

include/adapters/alsa/generic.hpp

@@ -1,46 +1,6 @@
 #pragma once
 
-#ifdef USE_ALSALIB_H
 #include <alsa/asoundlib.h>
-#else
-#include <assert.h>
-
-#ifndef __FreeBSD__
-#include <endian.h>
-#endif
-
-#include <errno.h>
-#include <fcntl.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <poll.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#ifndef __GNUC__
-#define __inline__ inline
-#endif
-
-#include <alsa/asoundef.h>
-#include <alsa/version.h>
-#include <alsa/global.h>
-#include <alsa/input.h>
-#include <alsa/output.h>
-#include <alsa/error.h>
-#include <alsa/conf.h>
-#include <alsa/pcm.h>
-#include <alsa/rawmidi.h>
-#include <alsa/timer.h>
-#include <alsa/hwdep.h>
-#include <alsa/control.h>
-#include <alsa/mixer.h>
-#include <alsa/seq_event.h>
-#include <alsa/seq.h>
-#include <alsa/seqmid.h>
-#include <alsa/seq_midi_event.h>
-#endif
 
 #include "common.hpp"
 #include "settings.hpp"

include/adapters/script_runner.hpp

@@ -21,8 +21,8 @@ class script_runner {
   using on_update = std::function<void(const data&)>;
   using interval = std::chrono::duration<double>;
 
-  script_runner(on_update on_update, const string& exec, const string& exec_if, bool tail, interval interval,
-      const vector<pair<string, string>>& env);
+  script_runner(on_update on_update, const string& exec, const string& exec_if, bool tail, interval interval_success,
+      interval interval_fail, const vector<pair<string, string>>& env);
 
   bool check_condition() const;
   interval process();
@@ -48,7 +48,8 @@ class script_runner {
   const string m_exec;
   const string m_exec_if;
   const bool m_tail;
-  const interval m_interval;
+  const interval m_interval_success;
+  const interval m_interval_fail;
   const vector<pair<string, string>> m_env;
 
   data m_data;

include/cairo/context.hpp

@@ -5,6 +5,7 @@
 #include <algorithm>
 #include <cmath>
 #include <deque>
+#include <iomanip>
 #include <iterator>
 
 #include "cairo/font.hpp"
@@ -163,9 +164,21 @@ namespace cairo {
         std::iter_swap(fns.begin(), fns.begin() + t.font - 1);
       }
 
-      string utf8 = string(t.contents);
-      utils::unicode_charlist chars;
-      utils::utf8_to_ucs4((const unsigned char*)utf8.c_str(), chars);
+      string utf8 = t.contents;
+      string_util::unicode_charlist chars;
+      bool valid = string_util::utf8_to_ucs4(utf8, chars);
+
+      // The conversion already removed any invalid chunks. We should probably log a warning though.
+      if (!valid) {
+        sstream hex;
+        hex << std::hex << std::setw(2) << std::setfill('0');
+
+        for(const char& c: utf8) {
+          hex << (static_cast<int>(c) & 0xff) << " ";
+        }
+
+        m_log.warn("Dropping invalid parts of UTF8 text '%s' %s", utf8, hex.to_string());
+      }
 
       while (!chars.empty()) {
         auto remaining = chars.size();
@@ -196,6 +209,12 @@ namespace cairo {
           cairo_text_extents_t extents;
           f->textwidth(subset, &extents);
 
+          /*
+           * Make sure we don't advance partial pixels, this can cause problems
+           * later when cairo renders background colors over half-pixels.
+           */
+          extents.x_advance = std::ceil(extents.x_advance);
+
           // Draw the background
           if (t.bg_rect.h != 0.0) {
             save();
@@ -228,9 +247,9 @@ namespace cairo {
           continue;
         }
 
-        char unicode[6]{'\0'};
-        utils::ucs4_to_utf8(unicode, chars.begin()->codepoint);
-        m_log.warn("Dropping unmatched character %s (U+%04x) in '%s'", unicode, chars.begin()->codepoint, t.contents);
+        std::array<char, 5> unicode{};
+        string_util::ucs4_to_utf8(unicode, chars.begin()->codepoint);
+        m_log.warn("Dropping unmatched character '%s' (U+%04x) in '%s'", unicode.data(), chars.begin()->codepoint, t.contents);
         utf8.erase(chars.begin()->offset, chars.begin()->length);
         for (auto&& c : chars) {
           c.offset -= chars.begin()->length;

include/cairo/font.hpp

@@ -39,8 +39,8 @@ namespace cairo {
     cairo_set_font_face(m_cairo, cairo_font_face_reference(m_font_face));
   }
 
-    virtual size_t match(utils::unicode_character& character) = 0;
-    virtual size_t match(utils::unicode_charlist& charlist) = 0;
+  virtual size_t match(string_util::unicode_character& character) = 0;
+  virtual size_t match(string_util::unicode_charlist& charlist) = 0;
   virtual size_t render(const string& text, double x = 0.0, double y = 0.0) = 0;
   virtual void textwidth(const string& text, cairo_text_extents_t* extents) = 0;
 
@@ -187,13 +187,13 @@ namespace cairo {
     cairo_set_scaled_font(m_cairo, m_scaled);
   }
 
-    size_t match(utils::unicode_character& character) override {
+  size_t match(string_util::unicode_character& character) override {
     auto lock = make_unique<utils::ft_face_lock>(m_scaled);
     auto face = static_cast<FT_Face>(*lock);
     return FT_Get_Char_Index(face, character.codepoint) ? 1 : 0;
   }
 
-    size_t match(utils::unicode_charlist& charlist) override {
+  size_t match(string_util::unicode_charlist& charlist) override {
     auto lock = make_unique<utils::ft_face_lock>(m_scaled);
     auto face = static_cast<FT_Face>(*lock);
     size_t available_chars = 0;
@@ -212,7 +212,8 @@ namespace cairo {
     cairo_glyph_t* glyphs{nullptr};
     cairo_text_cluster_t* clusters{nullptr};
     cairo_text_cluster_flags_t cf{};
-      int nglyphs = 0, nclusters = 0;
+    int nglyphs = 0;
+    int nclusters = 0;
 
     string utf8 = string(text);
     auto status = cairo_scaled_font_text_to_glyphs(
@@ -307,7 +308,7 @@ namespace cairo {
     throw application_error("Could not load FreeType");
   }
 
-    static auto fc_cleanup = scope_util::make_exit_handler([] {
+  static scope_util::on_exit fc_cleanup([] {
     FT_Done_FreeType(g_ftlib);
     FcFini();
   });

include/cairo/utils.hpp

@@ -1,7 +1,6 @@
 #pragma once
 
 #include <cairo/cairo-ft.h>
-#include <list>
 
 #include "common.hpp"
 
@@ -38,33 +37,11 @@ namespace cairo {
     FT_Face m_face;
   };
 
-    /**
-     * @brief Unicode character containing converted codepoint
-     * and details on where its position in the source string
-     */
-    struct unicode_character {
-      explicit unicode_character();
-      unsigned long codepoint;
-      int offset;
-      int length;
-    };
-    using unicode_charlist = std::list<unicode_character>;
-
   /**
    * @see <cairo/cairo.h>
    */
   cairo_operator_t str2operator(const string& mode, cairo_operator_t fallback);
-
-    /**
-     * @brief Create a UCS-4 codepoint from a utf-8 encoded string
-     */
-    bool utf8_to_ucs4(const unsigned char* src, unicode_charlist& result_list);
-
-    /**
-     * @brief Convert a UCS-4 codepoint to a utf-8 encoded string
-     */
-    size_t ucs4_to_utf8(char* utf8, unsigned int ucs);
-  }
-}
+} // namespace utils
+} // namespace cairo
 
 POLYBAR_NS_END

include/common.hpp

@@ -1,9 +1,11 @@
 #pragma once
 
+#include <array>
 #include <functional>
 #include <memory>
 #include <string>
 #include <type_traits>
+#include <utility>
 #include <vector>
 
 #include "settings.hpp"

include/components/bar.hpp

@@ -1,6 +1,7 @@
 #pragma once
 
 #include <cstdlib>
+#include <set>
 
 #include "common.hpp"
 #include "components/eventloop.hpp"
@@ -22,7 +23,9 @@ class connection;
 class logger;
 class renderer;
 class screen;
+namespace legacy_tray {
 class tray_manager;
+}
 
 namespace tags {
 class dispatch;
@@ -34,16 +37,15 @@ class bar : public xpp::event::sink<evt::button_press, evt::expose, evt::propert
             public signal_receiver<SIGN_PRIORITY_BAR, signals::ui::dim_window> {
  public:
   using make_type = unique_ptr<bar>;
-  static make_type make(eventloop::loop&, bool only_initialize_values = false);
+  static make_type make(eventloop::loop&, const config&, bool only_initialize_values = false);
 
   explicit bar(connection&, signal_emitter&, const config&, const logger&, eventloop::loop&, unique_ptr<screen>&&,
-      unique_ptr<tray_manager>&&, unique_ptr<tags::dispatch>&&, unique_ptr<tags::action_context>&&,
-      bool only_initialize_values);
+      unique_ptr<tags::dispatch>&&, unique_ptr<tags::action_context>&&, bool only_initialize_values);
   ~bar();
 
   const bar_settings& settings() const;
 
-  void start();
+  void start(const string& tray_module_name);
 
   void parse(string&& data, bool force = false);
 
@@ -92,7 +94,7 @@ class bar : public xpp::event::sink<evt::button_press, evt::expose, evt::propert
   const logger& m_log;
   eventloop::loop& m_loop;
   unique_ptr<screen> m_screen;
-  unique_ptr<tray_manager> m_tray;
+  unique_ptr<legacy_tray::tray_manager> m_tray;
   unique_ptr<renderer> m_renderer;
   unique_ptr<tags::dispatch> m_dispatch;
   unique_ptr<tags::action_context> m_action_ctxt;
@@ -105,12 +107,12 @@ class bar : public xpp::event::sink<evt::button_press, evt::expose, evt::propert
   string m_cursor{};
 
   string m_lastinput{};
-  bool m_dblclicks{false};
+  std::set<mousebtn> m_dblclicks;
 
-  eventloop::TimerHandle& m_leftclick_timer{m_loop.handle<eventloop::TimerHandle>()};
-  eventloop::TimerHandle& m_middleclick_timer{m_loop.handle<eventloop::TimerHandle>()};
-  eventloop::TimerHandle& m_rightclick_timer{m_loop.handle<eventloop::TimerHandle>()};
-  eventloop::TimerHandle& m_dim_timer{m_loop.handle<eventloop::TimerHandle>()};
+  eventloop::timer_handle_t m_leftclick_timer{m_loop.handle<eventloop::TimerHandle>()};
+  eventloop::timer_handle_t m_middleclick_timer{m_loop.handle<eventloop::TimerHandle>()};
+  eventloop::timer_handle_t m_rightclick_timer{m_loop.handle<eventloop::TimerHandle>()};
+  eventloop::timer_handle_t m_dim_timer{m_loop.handle<eventloop::TimerHandle>()};
 
   bool m_visible{true};
 };

include/components/config.hpp

@@ -24,10 +24,7 @@ using file_list = vector<string>;
 
 class config {
  public:
-  using make_type = const config&;
-  static make_type make(string path = "", string bar = "");
-
-  explicit config(const logger& logger, string&& path = "", string&& bar = "")
+  explicit config(const logger& logger, string&& path, string&& bar)
       : m_log(logger), m_file(move(path)), m_barname(move(bar)){};
 
   const string& filepath() const;
@@ -44,33 +41,19 @@ class config {
 
   void set_included(file_list included);
 
-  void warn_deprecated(const string& section, const string& key, string replacement) const;
+  file_list get_included_files() const;
+
+  void warn_deprecated(const string& section, const string& key, string replacement = "") const;
 
   /**
    * Returns true if a given parameter exists
    */
-  bool has(const string& section, const string& key) const {
-    auto it = m_sections.find(section);
-    return it != m_sections.end() && it->second.find(key) != it->second.end();
-  }
+  bool has(const string& section, const string& key) const;
 
   /**
    * Set parameter value
    */
-  void set(const string& section, const string& key, string&& value) {
-    auto it = m_sections.find(section);
-    if (it == m_sections.end()) {
-      valuemap_t values;
-      values[key] = value;
-      m_sections[section] = move(values);
-    }
-    auto it2 = it->second.find(key);
-    if ((it2 = it->second.find(key)) == it->second.end()) {
-      it2 = it->second.emplace_hint(it2, key, value);
-    } else {
-      it2->second = value;
-    }
-  }
+  void set(const string& section, const string& key, string&& value);
 
   /**
    * Get parameter for the current bar by name
@@ -92,7 +75,7 @@ class config {
     if (it->second.find(key) == it->second.end()) {
       throw key_error("Missing parameter \"" + section + "." + key + "\"");
     }
-    return dereference<T>(section, key, it->second.at(key), convert<T>(string{it->second.at(key)}));
+    return convert<T>(dereference(section, key, it->second.at(key)));
   }
 
   /**
@@ -103,8 +86,7 @@ class config {
   T get(const string& section, const string& key, const T& default_value) const {
     try {
       string string_value{get<string>(section, key)};
-      T result{convert<T>(string{string_value})};
-      return dereference<T>(move(section), move(key), move(string_value), move(result));
+      return convert<T>(dereference(move(section), move(key), move(string_value)));
     } catch (const key_error& err) {
       return default_value;
     } catch (const std::exception& err) {
@@ -157,12 +139,11 @@ class config {
     while (true) {
       try {
         string string_value{get<string>(section, key + "-" + to_string(results.size()))};
-        T value{convert<T>(string{string_value})};
 
         if (!string_value.empty()) {
-          results.emplace_back(dereference<T>(section, key, move(string_value), move(value)));
+          results.emplace_back(convert<T>(dereference(section, key, move(string_value))));
         } else {
-          results.emplace_back(move(value));
+          results.emplace_back(convert<T>(move(string_value)));
         }
       } catch (const key_error& err) {
         break;
@@ -187,12 +168,11 @@ class config {
     while (true) {
       try {
         string string_value{get<string>(section, key + "-" + to_string(results.size()))};
-        T value{convert<T>(string{string_value})};
 
         if (!string_value.empty()) {
-          results.emplace_back(dereference<T>(section, key, move(string_value), move(value)));
+          results.emplace_back(convert<T>(dereference(section, key, move(string_value))));
         } else {
-          results.emplace_back(move(value));
+          results.emplace_back(convert<T>(move(string_value)));
         }
       } catch (const key_error& err) {
         break;
@@ -210,8 +190,6 @@ class config {
     return default_value;
   }
 
-  void ignore_key(const string& section, const string& key) const;
-
   /**
    * Attempt to load value using the deprecated key name. If successful show a
    * warning message. If it fails load the value using the new key and given
@@ -225,20 +203,10 @@ class config {
       return value;
     } catch (const key_error& err) {
       return get<T>(section, newkey, fallback);
-    }
-  }
-
-  /**
-   * @see deprecated<T>
-   */
-  template <typename T = string>
-  T deprecated_list(const string& section, const string& old, const string& newkey, const vector<T>& fallback) const {
-    try {
-      vector<T> value{get_list<T>(section, old)};
-      warn_deprecated(section, old, newkey);
-      return value;
-    } catch (const key_error& err) {
-      return get_list<T>(section, newkey, fallback);
+    } catch (const std::exception& err) {
+      m_log.err("Invalid value for \"%s.%s\", using fallback key \"%s.%s\" (reason: %s)", section, old, section, newkey,
+          err.what());
+      return get<T>(section, newkey, fallback);
     }
   }
 
@@ -251,27 +219,7 @@ class config {
   /**
    * Dereference value reference
    */
-  template <typename T>
-  T dereference(const string& section, const string& key, const string& var, const T& fallback) const {
-    if (var.substr(0, 2) != "${" || var.substr(var.length() - 1) != "}") {
-      return fallback;
-    }
-
-    auto path = var.substr(2, var.length() - 3);
-    size_t pos;
-
-    if (path.compare(0, 4, "env:") == 0) {
-      return dereference_env<T>(path.substr(4));
-    } else if (path.compare(0, 5, "xrdb:") == 0) {
-      return dereference_xrdb<T>(path.substr(5));
-    } else if (path.compare(0, 5, "file:") == 0) {
-      return dereference_file<T>(path.substr(5));
-    } else if ((pos = path.find(".")) != string::npos) {
-      return dereference_local<T>(path.substr(0, pos), path.substr(pos + 1), section);
-    } else {
-      throw value_error("Invalid reference defined at \"" + section + "." + key + "\"");
-    }
-  }
+  string dereference(const string& section, const string& key, const string& var) const;
 
   /**
    * Dereference local value reference defined using:
@@ -282,133 +230,28 @@ class config {
    *  ${section.key}
    *  ${section.key:fallback}
    */
-  template <typename T>
-  T dereference_local(string section, const string& key, const string& current_section) const {
-    if (section == "BAR") {
-      m_log.warn("${BAR.key} is deprecated. Use ${root.key} instead");
-    }
-
-    section = string_util::replace(section, "BAR", this->section(), 0, 3);
-    section = string_util::replace(section, "root", this->section(), 0, 4);
-    section = string_util::replace(section, "self", current_section, 0, 4);
-
-    try {
-      string string_value{get<string>(section, key)};
-      T result{convert<T>(string{string_value})};
-      return dereference<T>(string(section), move(key), move(string_value), move(result));
-    } catch (const key_error& err) {
-      size_t pos;
-      if ((pos = key.find(':')) != string::npos) {
-        string fallback = key.substr(pos + 1);
-        m_log.info("The reference ${%s.%s} does not exist, using defined fallback value \"%s\"", section,
-            key.substr(0, pos), fallback);
-        return convert<T>(move(fallback));
-      }
-      throw value_error("The reference ${" + section + "." + key + "} does not exist (no fallback set)");
-    }
-  }
+  string dereference_local(string section, const string& key, const string& current_section) const;
 
   /**
    * Dereference environment variable reference defined using:
    *  ${env:key}
    *  ${env:key:fallback value}
    */
-  template <typename T>
-  T dereference_env(string var) const {
-    size_t pos;
-    string env_default;
-    /*
-     * This is needed because with only the string we cannot distinguish
-     * between an empty string as default and not default
-     */
-    bool has_default = false;
-
-    if ((pos = var.find(':')) != string::npos) {
-      env_default = var.substr(pos + 1);
-      has_default = true;
-      var.erase(pos);
-    }
-
-    if (env_util::has(var)) {
-      string env_value{env_util::get(var)};
-      m_log.info("Environment var reference ${%s} found (value=%s)", var, env_value);
-      return convert<T>(move(env_value));
-    } else if (has_default) {
-      m_log.info("Environment var ${%s} is undefined, using defined fallback value \"%s\"", var, env_default);
-      return convert<T>(move(env_default));
-    } else {
-      throw value_error(sstream() << "Environment var ${" << var << "} does not exist (no fallback set)");
-    }
-  }
+  string dereference_env(string var) const;
 
   /**
    * Dereference X resource db value defined using:
    *  ${xrdb:key}
    *  ${xrdb:key:fallback value}
    */
-  template <typename T>
-  T dereference_xrdb(string var) const {
-    size_t pos;
-#if not WITH_XRM
-    m_log.warn("No built-in support to dereference ${xrdb:%s} references (requires `xcb-util-xrm`)", var);
-    if ((pos = var.find(':')) != string::npos) {
-      return convert<T>(var.substr(pos + 1));
-    }
-    return convert<T>("");
-#else
-    if (!m_xrm) {
-      throw application_error("xrm is not initialized");
-    }
-
-    string fallback;
-    bool has_fallback = false;
-    if ((pos = var.find(':')) != string::npos) {
-      fallback = var.substr(pos + 1);
-      has_fallback = true;
-      var.erase(pos);
-    }
-
-    try {
-      auto value = m_xrm->require<string>(var.c_str());
-      m_log.info("Found matching X resource \"%s\" (value=%s)", var, value);
-      return convert<T>(move(value));
-    } catch (const xresource_error& err) {
-      if (has_fallback) {
-        m_log.info("%s, using defined fallback value \"%s\"", err.what(), fallback);
-        return convert<T>(move(fallback));
-      }
-      throw value_error(sstream() << err.what() << " (no fallback set)");
-    }
-#endif
-  }
+  string dereference_xrdb(string var) const;
 
   /**
    * Dereference file reference by reading its contents
    *  ${file:/absolute/file/path}
    *  ${file:/absolute/file/path:fallback value}
    */
-  template <typename T>
-  T dereference_file(string var) const {
-    size_t pos;
-    string fallback;
-    bool has_fallback = false;
-    if ((pos = var.find(':')) != string::npos) {
-      fallback = var.substr(pos + 1);
-      has_fallback = true;
-      var.erase(pos);
-    }
-    var = file_util::expand(var);
-
-    if (file_util::exists(var)) {
-      m_log.info("File reference \"%s\" found", var);
-      return convert<T>(string_util::trim(file_util::contents(var), '\n'));
-    } else if (has_fallback) {
-      m_log.info("File reference \"%s\" not found, using defined fallback value \"%s\"", var, fallback);
-      return convert<T>(move(fallback));
-    } else {
-      throw value_error(sstream() << "The file \"" << var << "\" does not exist (no fallback set)");
-    }
-  }
+  string dereference_file(string var) const;
 
  private:
   const logger& m_log;

include/components/config_parser.hpp

@@ -90,12 +90,12 @@ struct line_t {
 
 class config_parser {
  public:
-  config_parser(const logger& logger, string&& file, string&& bar);
+  config_parser(const logger& logger, string&& file);
   /**
    * This prevents passing a temporary logger to the constructor because that would be UB, as the temporary would be
    * destroyed once the constructor returns.
    */
-  config_parser(logger&& logger, string&& file, string&& bar) = delete;
+  config_parser(logger&& logger, string&& file) = delete;
 
   /**
    * @brief Performs the parsing of the main config file m_file
@@ -105,7 +105,7 @@ class config_parser {
    * @throws syntax_error If there was any kind of syntax error
    * @throws parser_error If aynthing else went wrong
    */
-  config::make_type parse();
+  config parse(string barname);
 
  protected:
   /**
@@ -229,12 +229,7 @@ class config_parser {
   /**
    * @brief Absolute path to the main config file
    */
-  string m_config;
-
-  /**
-   * Is used to resolve ${root...} references
-   */
-  string m_barname;
+  string m_config_file;
 
   /**
    * @brief List of all the lines in the config (with included files)

include/components/controller.hpp

@@ -39,7 +39,7 @@ class controller : public signal_receiver<SIGN_PRIORITY_CONTROLLER, signals::eve
                        signals::ipc::hook, signals::ui::button_press, signals::ui::update_background> {
  public:
   using make_type = unique_ptr<controller>;
-  static make_type make(bool has_ipc, eventloop::loop&);
+  static make_type make(bool has_ipc, eventloop::loop&, const config&);
 
   explicit controller(connection&, signal_emitter&, const logger&, const config&, bool has_ipc, eventloop::loop&);
   ~controller();
@@ -55,12 +55,14 @@ class controller : public signal_receiver<SIGN_PRIORITY_CONTROLLER, signals::eve
   void signal_handler(int signum);
 
   void conn_cb();
+  void create_config_watcher(const string& filename);
   void confwatch_handler(const char* fname);
   void notifier_handler();
   void screenshot_handler();
 
  protected:
   void trigger_notification();
+  void start_modules();
   void read_events(bool confwatch);
   void process_inputdata(string&& cmd);
   bool process_update(bool force);
@@ -100,6 +102,7 @@ class controller : public signal_receiver<SIGN_PRIORITY_CONTROLLER, signals::eve
   eventloop::loop& m_loop;
   unique_ptr<bar> m_bar;
   bool m_has_ipc;
+  string m_tray_module_name;
 
   /**
    * @brief Async handle to notify the eventloop
@@ -107,7 +110,7 @@ class controller : public signal_receiver<SIGN_PRIORITY_CONTROLLER, signals::eve
    * This handle is used to notify the eventloop of changes which are not otherwise covered by other handles.
    * E.g. click actions.
    */
-  eventloop::AsyncHandle& m_notifier{m_loop.handle<eventloop::AsyncHandle>([this]() { notifier_handler(); })};
+  eventloop::async_handle_t m_notifier{m_loop.handle<eventloop::AsyncHandle>([this]() { notifier_handler(); })};
 
   /**
    * Notification data for the controller.

include/components/eventloop.hpp

@@ -3,6 +3,7 @@
 #include <uv.h>
 
 #include <stdexcept>
+#include <utility>
 
 #include "common.hpp"
 #include "components/logger.hpp"
@@ -36,12 +37,12 @@ namespace eventloop {
       get()->data = this;
     }
 
-    Self& leak(std::unique_ptr<Self> h) {
+    void leak(std::shared_ptr<Self> h) {
       lifetime_extender = std::move(h);
-      return *lifetime_extender;
     }
 
     void unleak() {
+      reset_callbacks();
       lifetime_extender.reset();
     }
 
@@ -73,6 +74,15 @@ namespace eventloop {
     }
 
    protected:
+    ~Handle() = default;
+
+    /**
+     * Resets all callbacks stored in the handle as part of closing the handle.
+     *
+     * This releases any lambda captures, breaking possible cyclic dependencies in shared_ptr.
+     */
+    virtual void reset_callbacks() = 0;
+
     /**
      * Generic callback function that can be used for all uv handle callbacks.
      *
@@ -128,14 +138,14 @@ namespace eventloop {
     uv_loop_t* uv_loop;
 
     /**
-     * The handle stores the unique_ptr to itself so that it effectively leaks memory.
+     * The handle stores the shared_ptr to itself so that it effectively leaks memory.
      *
      * This saves us from having to guarantee that the handle's lifetime extends to at least after it is closed.
      *
      * Once the handle is closed, either explicitly or by walking all handles when the loop shuts down, this reference
      * is reset and the object is explicitly destroyed.
      */
-    std::unique_ptr<Self> lifetime_extender;
+    std::shared_ptr<Self> lifetime_extender;
   };
 
   struct ErrorEvent {
@@ -144,54 +154,32 @@ namespace eventloop {
 
   using cb_error = cb_event<ErrorEvent>;
 
-  class WriteRequest : public non_copyable_mixin {
+  class WriteRequest : public non_copyable_mixin, public non_movable_mixin {
    public:
     using cb_write = cb_void;
 
-    WriteRequest(cb_write user_cb, cb_error err_cb) : write_callback(user_cb), write_err_cb(err_cb) {
-      get()->data = this;
-    };
+    WriteRequest(cb_write&& user_cb, cb_error&& err_cb);
 
-    static WriteRequest& create(cb_write user_cb, cb_error err_cb) {
-      auto r = std::make_unique<WriteRequest>(user_cb, err_cb);
-      return r->leak(std::move(r));
-    };
+    static WriteRequest& create(cb_write&& user_cb, cb_error&& err_cb);
 
-    uv_write_t* get() {
-      return &req;
-    }
+    uv_write_t* get();
 
     /**
      * Trigger the write callback.
      *
      * After that, this object is destroyed.
      */
-    void trigger(int status) {
-      if (status < 0) {
-        if (write_err_cb) {
-          write_err_cb(ErrorEvent{status});
-        }
-      } else {
-        if (write_callback) {
-          write_callback();
-        }
-      }
-
-      unleak();
-    }
+    void trigger(int status);
 
    protected:
-    WriteRequest& leak(std::unique_ptr<WriteRequest> h) {
-      lifetime_extender = std::move(h);
-      return *lifetime_extender;
-    }
+    WriteRequest& leak(std::unique_ptr<WriteRequest> h);
 
-    void unleak() {
-      lifetime_extender.reset();
-    }
+    void unleak();
+
+    void reset_callbacks();
 
    private:
-    uv_write_t req;
+    uv_write_t req{};
 
     cb_write write_callback;
     cb_error write_err_cb;
@@ -208,13 +196,16 @@ namespace eventloop {
     int signum;
   };
 
-  class SignalHandle : public Handle<SignalHandle, uv_signal_t> {
+  class SignalHandle final : public Handle<SignalHandle, uv_signal_t> {
    public:
     using Handle::Handle;
     using cb = cb_event<SignalEvent>;
 
     void init();
-    void start(int signum, cb user_cb);
+    void start(int signum, cb&& user_cb);
+
+   protected:
+    void reset_callbacks() override;
 
    private:
     cb callback;
@@ -224,15 +215,18 @@ namespace eventloop {
     uv_poll_event event;
   };
 
-  class PollHandle : public Handle<PollHandle, uv_poll_t> {
+  class PollHandle final : public Handle<PollHandle, uv_poll_t> {
    public:
     using Handle::Handle;
     using cb = cb_event<PollEvent>;
 
     void init(int fd);
-    void start(int events, cb user_cb, cb_error err_cb);
+    void start(int events, cb&& user_cb, cb_error&& err_cb);
     static void poll_callback(uv_poll_t*, int status, int events);
 
+   protected:
+    void reset_callbacks() override;
+
    private:
     cb callback;
     cb_error err_cb;
@@ -243,41 +237,50 @@ namespace eventloop {
     uv_fs_event event;
   };
 
-  class FSEventHandle : public Handle<FSEventHandle, uv_fs_event_t> {
+  class FSEventHandle final : public Handle<FSEventHandle, uv_fs_event_t> {
    public:
     using Handle::Handle;
     using cb = cb_event<FSEvent>;
 
     void init();
-    void start(const string& path, int flags, cb user_cb, cb_error err_cb);
+    void start(const string& path, int flags, cb&& user_cb, cb_error&& err_cb);
     static void fs_event_callback(uv_fs_event_t*, const char* path, int events, int status);
 
+   protected:
+    void reset_callbacks() override;
+
    private:
     cb callback;
     cb_error err_cb;
   };
 
-  class TimerHandle : public Handle<TimerHandle, uv_timer_t> {
+  class TimerHandle final : public Handle<TimerHandle, uv_timer_t> {
    public:
     using Handle::Handle;
     using cb = cb_void;
 
     void init();
-    void start(uint64_t timeout, uint64_t repeat, cb user_cb);
+    void start(uint64_t timeout, uint64_t repeat, cb&& user_cb);
     void stop();
 
+   protected:
+    void reset_callbacks() override;
+
    private:
     cb callback;
   };
 
-  class AsyncHandle : public Handle<AsyncHandle, uv_async_t> {
+  class AsyncHandle final : public Handle<AsyncHandle, uv_async_t> {
    public:
     using Handle::Handle;
     using cb = cb_void;
 
-    void init(cb user_cb);
+    void init(cb&& user_cb);
     void send();
 
+   protected:
+    void reset_callbacks() override;
+
    private:
     cb callback;
   };
@@ -295,9 +298,9 @@ namespace eventloop {
     using cb_read_eof = cb_void;
     using cb_connection = cb_void;
 
-    void listen(int backlog, cb_connection user_cb, cb_error err_cb) {
-      this->connection_callback = user_cb;
-      this->connection_err_cb = err_cb;
+    void listen(int backlog, cb_connection&& user_cb, cb_error&& err_cb) {
+      this->connection_callback = std::move(user_cb);
+      this->connection_err_cb = std::move(err_cb);
       UV(uv_listen, this->template get<uv_stream_t>(), backlog, connection_cb);
     };
 
@@ -316,11 +319,11 @@ namespace eventloop {
       UV(uv_accept, this->template get<uv_stream_t>(), client.template get<uv_stream_t>());
     }
 
-    void read_start(cb_read fun, cb_void eof_cb, cb_error err_cb) {
-      this->read_callback = fun;
-      this->read_eof_cb = eof_cb;
-      this->read_err_cb = err_cb;
-      UV(uv_read_start, this->template get<uv_stream_t>(), &this->alloc_callback, read_cb);
+    void read_start(cb_read&& fun, cb_void&& eof_cb, cb_error&& err_cb) {
+      this->read_callback = std::move(fun);
+      this->read_eof_cb = std::move(eof_cb);
+      this->read_err_cb = std::move(err_cb);
+      UV(uv_read_start, this->template get<uv_stream_t>(), &this->alloc_callback, &read_cb);
     };
 
     static void read_cb(uv_stream_t* handle, ssize_t nread, const uv_buf_t* buf) {
@@ -340,8 +343,8 @@ namespace eventloop {
       }
     };
 
-    void write(const vector<uint8_t>& data, WriteRequest::cb_write user_cb = {}, cb_error err_cb = {}) {
-      WriteRequest& req = WriteRequest::create(user_cb, err_cb);
+    void write(const vector<uint8_t>& data, WriteRequest::cb_write&& user_cb = {}, cb_error&& err_cb = {}) {
+      WriteRequest& req = WriteRequest::create(std::move(user_cb), std::move(err_cb));
 
       uv_buf_t buf{(char*)data.data(), data.size()};
 
@@ -349,6 +352,17 @@ namespace eventloop {
           [](uv_write_t* r, int status) { static_cast<WriteRequest*>(r->data)->trigger(status); });
     }
 
+   protected:
+    ~StreamHandle() = default;
+
+    void reset_callbacks() override {
+      read_callback = nullptr;
+      read_eof_cb = nullptr;
+      read_err_cb = nullptr;
+      connection_callback = nullptr;
+      connection_err_cb = nullptr;
+    }
+
    private:
     /**
      * Callback for receiving data
@@ -371,7 +385,7 @@ namespace eventloop {
     cb_error connection_err_cb;
   };
 
-  class PipeHandle : public StreamHandle<PipeHandle, uv_pipe_t> {
+  class PipeHandle final : public StreamHandle<PipeHandle, uv_pipe_t> {
    public:
     using StreamHandle::StreamHandle;
     using cb_connect = cb_void;
@@ -381,7 +395,10 @@ namespace eventloop {
 
     void bind(const string& path);
 
-    void connect(const string& name, cb_connect user_cb, cb_error err_cb);
+    void connect(const string& name, cb_connect&& user_cb, cb_error&& err_cb);
+
+   protected:
+    void reset_callbacks() override;
 
    private:
     static void connect_cb(uv_connect_t* req, int status);
@@ -390,21 +407,47 @@ namespace eventloop {
     cb_connect connect_callback;
   };
 
+  class PrepareHandle final : public Handle<PrepareHandle, uv_prepare_t> {
+   public:
+    using Handle::Handle;
+    using cb = cb_void;
+
+    void init();
+    void start(cb&& user_cb);
+
+   protected:
+    void reset_callbacks() override;
+
+   private:
+    static void connect_cb(uv_connect_t* req, int status);
+
+    cb callback;
+  };
+
+  using signal_handle_t = shared_ptr<SignalHandle>;
+  using poll_handle_t = shared_ptr<PollHandle>;
+  using fs_event_handle_t = shared_ptr<FSEventHandle>;
+  using timer_handle_t = shared_ptr<TimerHandle>;
+  using async_handle_t = shared_ptr<AsyncHandle>;
+  using pipe_handle_t = shared_ptr<PipeHandle>;
+  using prepare_handle_t = shared_ptr<PrepareHandle>;
+
   class loop : public non_copyable_mixin, public non_movable_mixin {
    public:
     loop();
     ~loop();
     void run();
     void stop();
+    uint64_t now() const;
 
     template <typename H, typename... Args>
-    H& handle(Args... args) {
-      auto ptr = make_unique<H>(get());
+    shared_ptr<H> handle(Args&&... args) {
+      auto ptr = make_shared<H>(get());
       ptr->init(std::forward<Args>(args)...);
-      return ptr->leak(std::move(ptr));
+      ptr->leak(ptr);
+      return ptr;
     }
 
-   protected:
     uv_loop_t* get() const;
 
    private:

include/components/logger.hpp

@@ -34,6 +34,10 @@ class logger {
 
   explicit logger(loglevel level);
 
+  const logger& operator=(const logger&) const {
+    return *this;
+  }
+
   static loglevel parse_verbosity(const string& name, loglevel fallback = loglevel::NONE);
 
   void verbosity(loglevel level);

include/components/renderer.hpp

@@ -46,13 +46,15 @@ class renderer : public renderer_interface,
                  public signal_receiver<SIGN_PRIORITY_RENDERER, signals::ui::request_snapshot> {
  public:
   using make_type = unique_ptr<renderer>;
-  static make_type make(const bar_settings& bar, tags::action_context& action_ctxt);
+  static make_type make(const bar_settings& bar, tags::action_context& action_ctxt, const config&);
 
   explicit renderer(connection& conn, signal_emitter& sig, const config&, const logger& logger, const bar_settings& bar,
       background_manager& background_manager, tags::action_context& action_ctxt);
   ~renderer();
 
   xcb_window_t window() const;
+  xcb_visualtype_t* visual() const;
+  int depth() const;
 
   void begin(xcb_rectangle_t rect);
   void end();
@@ -67,6 +69,8 @@ class renderer : public renderer_interface,
 
   double get_alignment_start(const alignment align) const override;
 
+  void apply_tray_position(const tags::context& context) override;
+
  protected:
   void fill_background();
   void fill_overline(rgba color, double x, double w);
@@ -100,18 +104,22 @@ class renderer : public renderer_interface,
   const bar_settings& m_bar;
   std::shared_ptr<bg_slice> m_background;
 
-  int m_depth{32};
+  int m_depth{-1};
   xcb_window_t m_window;
-  xcb_colormap_t m_colormap;
+  xcb_colormap_t m_colormap{XCB_NONE};
   xcb_visualtype_t* m_visual;
   xcb_gcontext_t m_gcontext;
+
+  /**
+   * Background pixmap for the bar window
+   *
+   * All bar contents are rendered onto this.
+   */
   xcb_pixmap_t m_pixmap;
 
   xcb_rectangle_t m_rect{0, 0, 0U, 0U};
   reserve_area m_cleararea{};
 
-  // bool m_autosize{false};
-
   unique_ptr<cairo::context> m_context;
   unique_ptr<cairo::xcb_surface> m_surface;
   map<alignment, alignment_block> m_blocks;

include/components/renderer_interface.hpp

@@ -33,6 +33,8 @@ class renderer_interface {
    */
   virtual double get_alignment_start(const alignment align) const = 0;
 
+  virtual void apply_tray_position(const tags::context& context) = 0;
+
  protected:
   /**
    * Stores information about actions in the current render cycle.

include/components/screen.hpp

@@ -16,23 +16,16 @@ class logger;
 class connection;
 class signal_emitter;
 
-class screen : public xpp::event::sink<evt::randr_screen_change_notify> {
+class screen : public xpp::event::sink<evt::map_notify, evt::randr_screen_change_notify> {
  public:
   using make_type = unique_ptr<screen>;
-  static make_type make();
+  static make_type make(const config&);
 
   explicit screen(connection& conn, signal_emitter& emitter, const logger& logger, const config& conf);
   ~screen();
 
-  struct size size() const {
-    return m_size;
-  }
-
-  xcb_window_t root() const {
-    return m_root;
-  }
-
  protected:
+  void handle(const evt::map_notify& evt) override;
   void handle(const evt::randr_screen_change_notify& evt) override;
 
  private:
@@ -50,6 +43,12 @@ class screen : public xpp::event::sink<evt::randr_screen_change_notify> {
   };
   bool m_sigraised{false};
 
+  /**
+   * Original event mask on the root window.
+   * Used to restore event mask after the proxy window is mapped.
+   */
+  uint32_t m_root_mask{0};
+
   bool have_monitors_changed() const;
 };
 

include/components/types.hpp

@@ -82,11 +82,15 @@ enum class strut {
 struct position {
   int x{0};
   int y{0};
+
+  bool operator==(const position& other) {
+    return this->x == other.x && this->y == other.y;
+  }
 };
 
 struct size {
-  unsigned int w{1U};
-  unsigned int h{1U};
+  unsigned w{1U};
+  unsigned h{1U};
 };
 
 enum class spacing_type { SPACE, POINT, PIXEL };
@@ -163,11 +167,21 @@ struct action {
   string command{};
 };
 
+/**
+ * Settings specific to the X window system.
+ */
+struct x_settings {
+  xcb_window_t window{XCB_NONE};
+  xcb_visualtype_t* visual{nullptr};
+  int depth{-1};
+};
+
 struct bar_settings {
   explicit bar_settings() = default;
   bar_settings(const bar_settings& other) = default;
 
-  xcb_window_t window{XCB_NONE};
+  x_settings x_data;
+
   monitor_t monitor{};
   bool monitor_strict{false};
   bool monitor_exact{true};
@@ -183,6 +197,7 @@ struct bar_settings {
   position offset{0, 0};
   side_values padding{ZERO_SPACE, ZERO_SPACE};
   side_values module_margin{ZERO_SPACE, ZERO_SPACE};
+  bool struts{true};
   struct {
     int top;
     int bottom;
@@ -275,9 +290,4 @@ struct event_timer {
   };
 };
 
-enum class output_policy {
-  REDIRECTED,
-  IGNORED,
-};
-
 POLYBAR_NS_END

include/drawtypes/label.hpp

@@ -16,6 +16,7 @@ namespace drawtypes {
     size_t max{0_z};
     string suffix{""s};
     bool zpad{false};
+    bool rpadding{false};
   };
 
   class label : public non_copyable_mixin {

include/errors.hpp

@@ -8,14 +8,13 @@
 
 POLYBAR_NS
 
-using std::strerror;
 using std::exception;
 using std::runtime_error;
+using std::strerror;
 
 class application_error : public runtime_error {
  public:
   explicit application_error(const string& message, int code = 0) : runtime_error(message), code(code) {}
-  virtual ~application_error() {}
   int code{0};
 };
 
@@ -24,7 +23,6 @@ class system_error : public application_error {
   explicit system_error() : application_error(strerror(errno), errno) {}
   explicit system_error(const string& message)
       : application_error(message + " (reason: " + strerror(errno) + ")", errno) {}
-  virtual ~system_error() {}
 };
 
 #define DEFINE_CHILD_ERROR(error, parent) \

include/events/signal.hpp

@@ -101,7 +101,7 @@ namespace signals {
   } // namespace ui
 
   namespace ui_tray {
-    struct mapped_clients : public detail::value_signal<mapped_clients, unsigned int> {
+    struct tray_pos_change : public detail::value_signal<tray_pos_change, int> {
       using base_type::base_type;
     };
   } // namespace ui_tray

include/events/signal_fwd.hpp

@@ -35,8 +35,8 @@ namespace signals {
     struct update_geometry;
   } // namespace ui
   namespace ui_tray {
-    struct mapped_clients;
-  }
+    struct tray_pos_change;
+  } // namespace ui_tray
 } // namespace signals
 
 POLYBAR_NS_END

include/ipc/ipc.hpp

@@ -42,14 +42,14 @@ namespace ipc {
     const logger& m_log;
     eventloop::loop& m_loop;
 
-    eventloop::PipeHandle& socket;
+    eventloop::pipe_handle_t m_socket;
 
     class connection : public non_copyable_mixin, public non_movable_mixin {
      public:
       using cb = std::function<void(connection&, uint8_t, type_t, const std::vector<uint8_t>&)>;
       connection(eventloop::loop& loop, cb msg_callback);
       ~connection();
-      eventloop::PipeHandle& client_pipe;
+      eventloop::pipe_handle_t client_pipe;
       decoder dec;
     };
 
@@ -79,7 +79,7 @@ namespace ipc {
     struct fifo {
       fifo(eventloop::loop& loop, ipc& ipc, const string& path);
       ~fifo();
-      eventloop::PipeHandle& pipe_handle;
+      eventloop::pipe_handle_t pipe_handle;
     };
 
     unique_ptr<fifo> ipc_pipe;
@@ -89,7 +89,7 @@ namespace ipc {
      * Buffer for the currently received IPC message over the named pipe
      */
     string m_pipe_buffer{};
-    void receive_data(string buf);
+    void receive_data(const string& buf);
     void receive_eof();
   };
 } // namespace ipc

include/modules/alsa.hpp

@@ -1,6 +1,7 @@
 #pragma once
 
 #include "modules/meta/event_module.hpp"
+#include "modules/meta/types.hpp"
 #include "settings.hpp"
 
 POLYBAR_NS
@@ -20,7 +21,7 @@ namespace modules {
 
   class alsa_module : public event_module<alsa_module> {
    public:
-    explicit alsa_module(const bar_settings&, string);
+    explicit alsa_module(const bar_settings&, string, const config&);
 
     void teardown();
     bool has_event();
@@ -29,7 +30,7 @@ namespace modules {
     string get_output();
     bool build(builder* builder, const string& tag) const;
 
-    static constexpr auto TYPE = "internal/alsa";
+    static constexpr auto TYPE = ALSA_TYPE;
 
     static constexpr auto EVENT_INC = "inc";
     static constexpr auto EVENT_DEC = "dec";

include/modules/backlight.hpp

@@ -2,11 +2,25 @@
 
 #include "components/config.hpp"
 #include "modules/meta/inotify_module.hpp"
+#include "modules/meta/types.hpp"
 #include "settings.hpp"
 
 POLYBAR_NS
 
 namespace modules {
+  /**
+   * Reads value from `/sys/class/backlight/` to get a brightness value for some device.
+   *
+   * There are two file providing brightness values: `brightness` and `actual_brightness`.
+   * The `actual_brightness` file is usually more reliable, but in some cases does not work (provides completely wrong
+   * values, doesn't update) depending on kernel version, graphics driver, and/or graphics card.
+   * Which file is used is controlled by the use-actual-brightness setting.
+   *
+   * The general issue with the `brightness` file seems to be that, while it does receive inotify events, the events it
+   * receives are not for modification of the file and arrive just before the file is updated with a new value. The module
+   * thus reads and displays an outdated brightness value. To compensate for this, the module periodically (controlled by
+   * `poll-interval`) forces an update. By default, this is only enabled if the `backlight` file is used.
+   */
   class backlight_module : public inotify_module<backlight_module> {
    public:
     struct brightness_handle {
@@ -19,14 +33,13 @@ namespace modules {
 
     string get_output();
 
-   public:
-    explicit backlight_module(const bar_settings&, string);
+    explicit backlight_module(const bar_settings&, string, const config&);
 
     void idle();
-    bool on_event(inotify_event* event);
+    bool on_event(const inotify_event& event);
     bool build(builder* builder, const string& tag) const;
 
-    static constexpr auto TYPE = "internal/backlight";
+    static constexpr auto TYPE = BACKLIGHT_TYPE;
 
     static constexpr const char* EVENT_INC = "inc";
     static constexpr const char* EVENT_DEC = "dec";
@@ -46,14 +59,18 @@ namespace modules {
     label_t m_label;
     progressbar_t m_progressbar;
     string m_path_backlight;
-    float m_max_brightness;
+    float m_max_brightness{};
     bool m_scroll{false};
+    int m_scroll_interval{5};
     bool m_use_actual_brightness{true};
 
     brightness_handle m_val;
     brightness_handle m_max;
 
     int m_percentage = 0;
+
+    chrono::duration<double> m_interval{};
+    chrono::steady_clock::time_point m_lastpoll;
   };
 } // namespace modules
 

include/modules/battery.hpp

@@ -2,6 +2,7 @@
 
 #include "common.hpp"
 #include "modules/meta/inotify_module.hpp"
+#include "modules/meta/types.hpp"
 
 POLYBAR_NS
 
@@ -46,16 +47,16 @@ namespace modules {
     using consumption_reader = mutex_wrapper<value_reader<string /* watts */>>;
 
    public:
-    explicit battery_module(const bar_settings&, string);
+    explicit battery_module(const bar_settings&, string, const config&);
 
     void start() override;
     void teardown();
     void idle();
-    bool on_event(inotify_event* event);
+    bool on_event(const inotify_event& event);
     string get_format() const;
     bool build(builder* builder, const string& tag) const;
 
-    static constexpr auto TYPE = "internal/battery";
+    static constexpr auto TYPE = BATTERY_TYPE;
 
    protected:
     state current_state();

include/modules/bspwm.hpp

@@ -1,6 +1,7 @@
 #pragma once
 
 #include "modules/meta/event_module.hpp"
+#include "modules/meta/types.hpp"
 #include "utils/bspwm.hpp"
 
 POLYBAR_NS
@@ -39,7 +40,7 @@ namespace modules {
     };
 
    public:
-    explicit bspwm_module(const bar_settings&, string);
+    explicit bspwm_module(const bar_settings&, string, const config&);
 
     void stop() override;
     bool has_event();
@@ -47,7 +48,7 @@ namespace modules {
     string get_output();
     bool build(builder* builder, const string& tag) const;
 
-    static constexpr auto TYPE = "internal/bspwm";
+    static constexpr auto TYPE = BSPWM_TYPE;
 
     static constexpr auto EVENT_FOCUS = "focus";
     static constexpr auto EVENT_NEXT = "next";

include/modules/counter.hpp

@@ -1,18 +1,19 @@
 #pragma once
 
 #include "modules/meta/timer_module.hpp"
+#include "modules/meta/types.hpp"
 
 POLYBAR_NS
 
 namespace modules {
   class counter_module : public timer_module<counter_module> {
    public:
-    explicit counter_module(const bar_settings&, string);
+    explicit counter_module(const bar_settings&, string, const config&);
 
     bool update();
     bool build(builder* builder, const string& tag) const;
 
-    static constexpr auto TYPE = "internal/counter";
+    static constexpr auto TYPE = COUNTER_TYPE;
 
    private:
     static constexpr auto TAG_COUNTER = "<counter>";

include/modules/cpu.hpp

@@ -1,6 +1,7 @@
 #pragma once
 
 #include "modules/meta/timer_module.hpp"
+#include "modules/meta/types.hpp"
 #include "settings.hpp"
 
 POLYBAR_NS
@@ -20,13 +21,13 @@ namespace modules {
 
   class cpu_module : public timer_module<cpu_module> {
    public:
-    explicit cpu_module(const bar_settings&, string);
+    explicit cpu_module(const bar_settings&, string, const config&);
 
     bool update();
     string get_format() const;
     bool build(builder* builder, const string& tag) const;
 
-    static constexpr auto TYPE = "internal/cpu";
+    static constexpr auto TYPE = CPU_TYPE;
 
    protected:
     bool read_values();

include/modules/date.hpp

@@ -6,18 +6,19 @@
 #include <iostream>
 
 #include "modules/meta/timer_module.hpp"
+#include "modules/meta/types.hpp"
 
 POLYBAR_NS
 
 namespace modules {
   class date_module : public timer_module<date_module> {
    public:
-    explicit date_module(const bar_settings&, string);
+    explicit date_module(const bar_settings&, string, const config&);
 
     bool update();
     bool build(builder* builder, const string& tag) const;
 
-    static constexpr auto TYPE = "internal/date";
+    static constexpr auto TYPE = DATE_TYPE;
 
     static constexpr auto EVENT_TOGGLE = "toggle";
 

include/modules/dwm.hpp

@@ -3,13 +3,14 @@
 #include <dwmipcpp/connection.hpp>
 
 #include "modules/meta/event_module.hpp"
+#include "modules/meta/types.hpp"
 
 POLYBAR_NS
 
 namespace modules {
   class dwm_module : public event_module<dwm_module> {
    public:
-    explicit dwm_module(const bar_settings&, string);
+    explicit dwm_module(const bar_settings&, string, const config&);
 
     using tag_mask_t = unsigned int;
     using window_t = unsigned int;
@@ -46,7 +47,7 @@ namespace modules {
       label_t label;
     };
 
-    static constexpr auto TYPE = "internal/dwm";
+    static constexpr auto TYPE = DWM_TYPE;
 
     void stop() override;
     bool has_event();

include/modules/fs.hpp

@@ -2,6 +2,7 @@
 
 #include "components/config.hpp"
 #include "modules/meta/timer_module.hpp"
+#include "modules/meta/types.hpp"
 #include "settings.hpp"
 
 POLYBAR_NS
@@ -35,14 +36,14 @@ namespace modules {
    */
   class fs_module : public timer_module<fs_module> {
    public:
-    explicit fs_module(const bar_settings&, string);
+    explicit fs_module(const bar_settings&, string, const config&);
 
     bool update();
     string get_format() const;
     string get_output();
     bool build(builder* builder, const string& tag) const;
 
-    static constexpr auto TYPE = "internal/fs";
+    static constexpr auto TYPE = FS_TYPE;
 
    private:
     static constexpr auto FORMAT_MOUNTED = "format-mounted";

include/modules/github.hpp

@@ -3,6 +3,7 @@
 #include <atomic>
 
 #include "modules/meta/timer_module.hpp"
+#include "modules/meta/types.hpp"
 #include "settings.hpp"
 #include "utils/http.hpp"
 
@@ -14,13 +15,13 @@ namespace modules {
    */
   class github_module : public timer_module<github_module> {
    public:
-    explicit github_module(const bar_settings&, string);
+    explicit github_module(const bar_settings&, string, const config&);
 
     bool update();
     bool build(builder* builder, const string& tag) const;
     string get_format() const;
 
-    static constexpr auto TYPE = "internal/github";
+    static constexpr auto TYPE = GITHUB_TYPE;
 
    private:
     void update_label(int);
@@ -35,7 +36,7 @@ namespace modules {
     string m_api_url;
     string m_user;
     string m_accesstoken{};
-    unique_ptr<http_downloader> m_http{};
+    http_downloader m_http{};
     bool m_empty_notifications{false};
     std::atomic<bool> m_offline{false};
   };

include/modules/i3.hpp

@@ -4,6 +4,7 @@
 
 #include "components/config.hpp"
 #include "modules/meta/event_module.hpp"
+#include "modules/meta/types.hpp"
 #include "utils/i3.hpp"
 #include "utils/io.hpp"
 
@@ -44,14 +45,14 @@ namespace modules {
     };
 
    public:
-    explicit i3_module(const bar_settings&, string);
+    explicit i3_module(const bar_settings&, string, const config&);
 
     void stop() override;
     bool has_event();
     bool update();
     bool build(builder* builder, const string& tag) const;
 
-    static constexpr auto TYPE = "internal/i3";
+    static constexpr auto TYPE = I3_TYPE;
 
     static constexpr auto EVENT_FOCUS = "focus";
     static constexpr auto EVENT_NEXT = "next";

include/modules/ipc.hpp

@@ -1,6 +1,7 @@
 #pragma once
 
 #include "modules/meta/static_module.hpp"
+#include "modules/meta/types.hpp"
 #include "utils/command.hpp"
 
 POLYBAR_NS
@@ -24,15 +25,16 @@ namespace modules {
     };
 
    public:
-    explicit ipc_module(const bar_settings&, string);
+    explicit ipc_module(const bar_settings&, string, const config&);
 
     void start() override;
     void update();
     string get_output();
+    string get_format() const;
     bool build(builder* builder, const string& tag) const;
     void on_message(const string& message);
 
-    static constexpr auto TYPE = "custom/ipc";
+    static constexpr auto TYPE = IPC_TYPE;
 
     static constexpr auto EVENT_SEND = "send";
     static constexpr auto EVENT_HOOK = "hook";
@@ -53,12 +55,17 @@ namespace modules {
     bool has_hook() const;
 
     void set_hook(int h);
-
+    void update_output() ;
    private:
-    static constexpr const char* TAG_OUTPUT{"<output>"};
+    static constexpr auto TAG_OUTPUT = "<output>";
+    static constexpr auto TAG_LABEL = "<label>";
+
+    label_t m_label;
+
     vector<unique_ptr<hook>> m_hooks;
     map<mousebtn, string> m_actions;
     string m_output;
+
     int m_initial{-1};
     int m_current_hook{-1};
     void exec_hook();

include/modules/memory.hpp

@@ -1,6 +1,7 @@
 #pragma once
 
 #include "modules/meta/timer_module.hpp"
+#include "modules/meta/types.hpp"
 #include "settings.hpp"
 
 POLYBAR_NS
@@ -10,13 +11,13 @@ namespace modules {
   enum class memory_state { NORMAL = 0, WARN };
   class memory_module : public timer_module<memory_module> {
    public:
-    explicit memory_module(const bar_settings&, string);
+    explicit memory_module(const bar_settings&, string, const config&);
 
     bool update();
     string get_format() const;
     bool build(builder* builder, const string& tag) const;
 
-    static constexpr auto TYPE = "internal/memory";
+    static constexpr auto TYPE = MEMORY_TYPE;
 
    private:
     static constexpr const char* TAG_LABEL{"<label>"};

include/modules/menu.hpp

@@ -1,6 +1,7 @@
 #pragma once
 
 #include "modules/meta/static_module.hpp"
+#include "modules/meta/types.hpp"
 
 POLYBAR_NS
 
@@ -17,12 +18,12 @@ namespace modules {
     };
 
    public:
-    explicit menu_module(const bar_settings&, string);
+    explicit menu_module(const bar_settings&, string, const config&);
 
     bool build(builder* builder, const string& tag) const;
     void update() {}
 
-    static constexpr auto TYPE = "custom/menu";
+    static constexpr auto TYPE = MENU_TYPE;
 
     static constexpr auto EVENT_OPEN = "open";
     static constexpr auto EVENT_CLOSE = "close";

include/modules/meta/all.hpp

@@ -0,0 +1,48 @@
+#pragma once
+
+/**
+ * Header file to include the headers for all modules.
+ */
+
+#include "modules/backlight.hpp"
+#include "modules/battery.hpp"
+#include "modules/bspwm.hpp"
+#include "modules/counter.hpp"
+#include "modules/cpu.hpp"
+#include "modules/date.hpp"
+#include "modules/fs.hpp"
+#include "modules/ipc.hpp"
+#include "modules/memory.hpp"
+#include "modules/menu.hpp"
+#include "modules/meta/base.hpp"
+#include "modules/script.hpp"
+#include "modules/temperature.hpp"
+#include "modules/text.hpp"
+#include "modules/tray.hpp"
+#include "modules/xbacklight.hpp"
+#include "modules/xwindow.hpp"
+#include "modules/xworkspaces.hpp"
+#if ENABLE_I3
+#include "modules/i3.hpp"
+#endif
+#if ENABLE_DWM
+#include "modules/dwm.hpp"
+#endif
+#if ENABLE_MPD
+#include "modules/mpd.hpp"
+#endif
+#if ENABLE_NETWORK
+#include "modules/network.hpp"
+#endif
+#if ENABLE_ALSA
+#include "modules/alsa.hpp"
+#endif
+#if ENABLE_PULSEAUDIO
+#include "modules/pulseaudio.hpp"
+#endif
+#if ENABLE_CURL
+#include "modules/github.hpp"
+#endif
+#if ENABLE_XKEYBOARD
+#include "modules/xkeyboard.hpp"
+#endif

include/modules/meta/base.hpp

@@ -8,6 +8,7 @@
 #include <mutex>
 
 #include "common.hpp"
+#include "components/config.hpp"
 #include "components/types.hpp"
 #include "errors.hpp"
 #include "utils/concurrency.hpp"
@@ -58,7 +59,6 @@ namespace modules {
 
   struct module_format {
     string value{};
-    vector<string> tags{};
     label_t prefix{};
     label_t suffix{};
     rgba fg{};
@@ -142,7 +142,7 @@ namespace modules {
   template <class Impl>
   class module : public module_interface {
    public:
-    module(const bar_settings& bar, string name);
+    module(const bar_settings& bar, string name, const config&);
     ~module() noexcept;
 
     static constexpr auto EVENT_MODULE_TOGGLE = "module_toggle";
@@ -189,7 +189,7 @@ namespace modules {
     string get_format() const;
     string get_output();
 
-    void set_visible(bool value);
+    virtual void set_visible(bool value);
 
     void action_module_toggle();
     void action_module_show();

include/modules/meta/base.inl

@@ -1,7 +1,7 @@
+#pragma once
 #include <cassert>
 
 #include "components/builder.hpp"
-#include "components/config.hpp"
 #include "components/logger.hpp"
 #include "events/signal.hpp"
 #include "events/signal_emitter.hpp"
@@ -15,11 +15,11 @@ namespace modules {
   // module<Impl> public {{{
 
   template <typename Impl>
-  module<Impl>::module(const bar_settings& bar, string name)
+  module<Impl>::module(const bar_settings& bar, string name, const config& conf)
       : m_sig(signal_emitter::make())
       , m_bar(bar)
       , m_log(logger::make())
-      , m_conf(config::make())
+      , m_conf(conf)
       , m_router(make_unique<action_router>())
       , m_name("module/" + name)
       , m_name_raw(name)

include/modules/meta/factory.hpp

@@ -1,117 +1,25 @@
 #pragma once
 
 #include "common.hpp"
-#include "modules/backlight.hpp"
-#include "modules/battery.hpp"
-#include "modules/bspwm.hpp"
-#include "modules/counter.hpp"
-#include "modules/cpu.hpp"
-#include "modules/date.hpp"
-#include "modules/fs.hpp"
-#include "modules/ipc.hpp"
-#include "modules/memory.hpp"
-#include "modules/menu.hpp"
+#include "components/logger.hpp"
+#include "components/types.hpp"
 #include "modules/meta/base.hpp"
-#include "modules/script.hpp"
-#if DEBUG
-#include "modules/systray.hpp"
-#endif
-#include "modules/temperature.hpp"
-#include "modules/text.hpp"
-#include "modules/xbacklight.hpp"
-#include "modules/xwindow.hpp"
-#include "modules/xworkspaces.hpp"
-#if ENABLE_I3
-#include "modules/i3.hpp"
-#endif
-#if ENABLE_DWM
-#include "modules/dwm.hpp"
-#endif
-#if ENABLE_MPD
-#include "modules/mpd.hpp"
-#endif
-#if ENABLE_NETWORK
-#include "modules/network.hpp"
-#endif
-#if ENABLE_ALSA
-#include "modules/alsa.hpp"
-#endif
-#if ENABLE_PULSEAUDIO
-#include "modules/pulseaudio.hpp"
-#endif
-#if ENABLE_CURL
-#include "modules/github.hpp"
-#endif
-#if ENABLE_XKEYBOARD
-#include "modules/xkeyboard.hpp"
-#endif
-#include "modules/unsupported.hpp"
 
 POLYBAR_NS
 
-using namespace modules;
+namespace modules {
+  using module_t = shared_ptr<module_interface>;
 
-namespace {
-  module_interface* make_module(string&& name, const bar_settings& bar, string module_name, const logger& m_log) {
-    if (name == counter_module::TYPE) {
-      return new counter_module(bar, move(module_name));
-    } else if (name == backlight_module::TYPE) {
-      return new backlight_module(bar, move(module_name));
-    } else if (name == battery_module::TYPE) {
-      return new battery_module(bar, move(module_name));
-    } else if (name == bspwm_module::TYPE) {
-      return new bspwm_module(bar, move(module_name));
-    } else if (name == cpu_module::TYPE) {
-      return new cpu_module(bar, move(module_name));
-    } else if (name == date_module::TYPE) {
-      return new date_module(bar, move(module_name));
-    } else if (name == dwm_module::TYPE) {
-      return new dwm_module(bar, move(module_name));
-    } else if (name == github_module::TYPE) {
-      return new github_module(bar, move(module_name));
-    } else if (name == fs_module::TYPE) {
-      return new fs_module(bar, move(module_name));
-    } else if (name == memory_module::TYPE) {
-      return new memory_module(bar, move(module_name));
-    } else if (name == i3_module::TYPE) {
-      return new i3_module(bar, move(module_name));
-    } else if (name == mpd_module::TYPE) {
-      return new mpd_module(bar, move(module_name));
-    } else if (name == "internal/volume") {
-      m_log.warn("internal/volume is deprecated, use %s instead", string(alsa_module::TYPE));
-      return new alsa_module(bar, move(module_name));
-    } else if (name == alsa_module::TYPE) {
-      return new alsa_module(bar, move(module_name));
-    } else if (name == pulseaudio_module::TYPE) {
-      return new pulseaudio_module(bar, move(module_name));
-    } else if (name == network_module::TYPE) {
-      return new network_module(bar, move(module_name));
-#if DEBUG
-    } else if (name == systray_module::TYPE) {
-      return new systray_module(bar, move(module_name));
-#endif
-    } else if (name == temperature_module::TYPE) {
-      return new temperature_module(bar, move(module_name));
-    } else if (name == xbacklight_module::TYPE) {
-      return new xbacklight_module(bar, move(module_name));
-    } else if (name == xkeyboard_module::TYPE) {
-      return new xkeyboard_module(bar, move(module_name));
-    } else if (name == xwindow_module::TYPE) {
-      return new xwindow_module(bar, move(module_name));
-    } else if (name == xworkspaces_module::TYPE) {
-      return new xworkspaces_module(bar, move(module_name));
-    } else if (name == text_module::TYPE) {
-      return new text_module(bar, move(module_name));
-    } else if (name == script_module::TYPE) {
-      return new script_module(bar, move(module_name));
-    } else if (name == menu_module::TYPE) {
-      return new menu_module(bar, move(module_name));
-    } else if (name == ipc_module::TYPE) {
-      return new ipc_module(bar, move(module_name));
-    } else {
-      throw application_error("Unknown module: " + name);
-    }
-  }
-}  // namespace
+  /**
+   * Creates a new module instance.
+   *
+   * @param type The type of the module (as given by each module's TYPE field)
+   * @param bar An instance of the @ref bar_settings
+   * @param module_name The user-specified module name
+   * @param log A @ref logger instance
+   * @param config A @ref config instance
+   */
+  module_t make_module(string&& type, const bar_settings& bar, string module_name, const logger& log, const config& config);
+} // namespace modules
 
 POLYBAR_NS_END

include/modules/meta/inotify_module.hpp

@@ -22,7 +22,7 @@ namespace modules {
       try {
         // Warm up module output before entering the loop
         std::unique_lock<std::mutex> guard(this->m_updatelock);
-        CAST_MOD(Impl)->on_event(nullptr);
+        CAST_MOD(Impl)->on_event({});
         CAST_MOD(Impl)->broadcast();
         guard.unlock();
 
@@ -47,15 +47,14 @@ namespace modules {
     }
 
     void poll_events() {
-      vector<unique_ptr<inotify_watch>> watches;
+      vector<inotify_watch> watches;
 
       try {
         for (auto&& w : m_watchlist) {
-          watches.emplace_back(inotify_util::make_watch(w.first));
-          watches.back()->attach(w.second);
+          watches.emplace_back(w.first);
+          watches.back().attach(w.second);
         }
       } catch (const system_error& e) {
-        watches.clear();
         this->m_log.err("%s: Error while creating inotify watch (what: %s)", this->name(), e.what());
         CAST_MOD(Impl)->sleep(0.1s);
         return;
@@ -63,25 +62,21 @@ namespace modules {
 
       while (this->running()) {
         for (auto&& w : watches) {
-          this->m_log.trace_x("%s: Poll inotify watch %s", this->name(), w->path());
+          this->m_log.trace_x("%s: Poll inotify watch %s", this->name(), w.path());
 
-          if (w->poll(1000 / watches.size())) {
-            auto event = w->get_event();
-
-            for (auto&& w : watches) {
-              w->remove(true);
-            }
-
-            if (CAST_MOD(Impl)->on_event(event.get())) {
+          if (w.poll(1000 / watches.size())) {
+            auto event = w.get_event();
+            if (CAST_MOD(Impl)->on_event(event)) {
               CAST_MOD(Impl)->broadcast();
             }
             CAST_MOD(Impl)->idle();
             return;
           }
 
-          if (!this->running())
+          if (!this->running()) {
             break;
           }
+        }
         CAST_MOD(Impl)->idle();
       }
     }

include/modules/meta/types.hpp

@@ -0,0 +1,38 @@
+#pragma once
+
+#include "common.hpp"
+
+POLYBAR_NS
+
+namespace modules {
+
+  static constexpr const char ALSA_TYPE[] = "internal/alsa";
+  static constexpr const char BACKLIGHT_TYPE[] = "internal/backlight";
+  static constexpr const char BATTERY_TYPE[] = "internal/battery";
+  static constexpr const char BSPWM_TYPE[] = "internal/bspwm";
+  static constexpr const char COUNTER_TYPE[] = "internal/counter";
+  static constexpr const char CPU_TYPE[] = "internal/cpu";
+  static constexpr const char DATE_TYPE[] = "internal/date";
+  static constexpr const char FS_TYPE[] = "internal/fs";
+  static constexpr const char GITHUB_TYPE[] = "internal/github";
+  static constexpr const char I3_TYPE[] = "internal/i3";
+  static constexpr const char DWM_TYPE[] = "internal/dwm";
+  static constexpr const char MEMORY_TYPE[] = "internal/memory";
+  static constexpr const char MPD_TYPE[] = "internal/mpd";
+  static constexpr const char NETWORK_TYPE[] = "internal/network";
+  static constexpr const char PULSEAUDIO_TYPE[] = "internal/pulseaudio";
+  static constexpr const char TEMPERATURE_TYPE[] = "internal/temperature";
+  static constexpr const char TRAY_TYPE[] = "internal/tray";
+  static constexpr const char XBACKLIGHT_TYPE[] = "internal/xbacklight";
+  static constexpr const char XKEYBOARD_TYPE[] = "internal/xkeyboard";
+  static constexpr const char XWINDOW_TYPE[] = "internal/xwindow";
+  static constexpr const char XWORKSPACES_TYPE[] = "internal/xworkspaces";
+
+  static constexpr const char IPC_TYPE[] = "custom/ipc";
+  static constexpr const char MENU_TYPE[] = "custom/menu";
+  static constexpr const char SCRIPT_TYPE[] = "custom/script";
+  static constexpr const char TEXT_TYPE[] = "custom/text";
+
+} // namespace modules
+
+POLYBAR_NS_END

include/modules/mpd.hpp

@@ -4,6 +4,7 @@
 
 #include "adapters/mpd.hpp"
 #include "modules/meta/event_module.hpp"
+#include "modules/meta/types.hpp"
 #include "utils/env.hpp"
 
 POLYBAR_NS
@@ -13,7 +14,7 @@ using namespace mpd;
 namespace modules {
   class mpd_module : public event_module<mpd_module> {
    public:
-    explicit mpd_module(const bar_settings&, string);
+    explicit mpd_module(const bar_settings&, string, const config&);
 
     void teardown();
     inline bool connected() const;
@@ -24,7 +25,7 @@ namespace modules {
     string get_output();
     bool build(builder* builder, const string& tag) const;
 
-    static constexpr auto TYPE = "internal/mpd";
+    static constexpr auto TYPE = MPD_TYPE;
 
     static constexpr const char* EVENT_PLAY = "play";
     static constexpr const char* EVENT_PAUSE = "pause";

include/modules/network.hpp

@@ -3,6 +3,7 @@
 #include "adapters/net.hpp"
 #include "components/config.hpp"
 #include "modules/meta/timer_module.hpp"
+#include "modules/meta/types.hpp"
 
 POLYBAR_NS
 
@@ -11,14 +12,14 @@ namespace modules {
 
   class network_module : public timer_module<network_module> {
    public:
-    explicit network_module(const bar_settings&, string);
+    explicit network_module(const bar_settings&, string, const config&);
 
     void teardown();
     bool update();
     string get_format() const;
     bool build(builder* builder, const string& tag) const;
 
-    static constexpr auto TYPE = "internal/network";
+    static constexpr auto TYPE = NETWORK_TYPE;
 
    protected:
     void subthread_routine();

include/modules/pulseaudio.hpp

@@ -1,6 +1,7 @@
 #pragma once
 
 #include "modules/meta/event_module.hpp"
+#include "modules/meta/types.hpp"
 #include "settings.hpp"
 
 POLYBAR_NS
@@ -13,7 +14,7 @@ namespace modules {
 
   class pulseaudio_module : public event_module<pulseaudio_module> {
    public:
-    explicit pulseaudio_module(const bar_settings&, string);
+    explicit pulseaudio_module(const bar_settings&, string, const config&);
 
     void teardown();
     bool has_event();
@@ -22,7 +23,7 @@ namespace modules {
     string get_output();
     bool build(builder* builder, const string& tag) const;
 
-    static constexpr auto TYPE = "internal/pulseaudio";
+    static constexpr auto TYPE = PULSEAUDIO_TYPE;
 
     static constexpr auto EVENT_INC = "inc";
     static constexpr auto EVENT_DEC = "dec";
@@ -53,6 +54,7 @@ namespace modules {
     atomic<bool> m_muted{false};
     atomic<int> m_volume{0};
     atomic<double> m_decibels{0};
+    atomic<bool> m_reverse_scroll{false};
   };
 }  // namespace modules
 

include/modules/script.hpp

@@ -2,6 +2,7 @@
 
 #include "adapters/script_runner.hpp"
 #include "modules/meta/base.hpp"
+#include "modules/meta/types.hpp"
 #include "utils/command.hpp"
 #include "utils/io.hpp"
 
@@ -10,7 +11,7 @@ POLYBAR_NS
 namespace modules {
   class script_module : public module<script_module> {
    public:
-    explicit script_module(const bar_settings&, string);
+    explicit script_module(const bar_settings&, string, const config&);
 
     void start() override;
     void stop() override;
@@ -20,7 +21,7 @@ namespace modules {
 
     bool build(builder* builder, const string& tag) const;
 
-    static constexpr auto TYPE = "custom/script";
+    static constexpr auto TYPE = SCRIPT_TYPE;
 
    protected:
     bool check_condition();
@@ -33,7 +34,9 @@ namespace modules {
     static constexpr auto FORMAT_FAIL = "format-fail";
 
     const bool m_tail;
-    const script_runner::interval m_interval{0};
+    const script_runner::interval m_interval_success{0};
+    const script_runner::interval m_interval_fail{0};
+    const script_runner::interval m_interval_if{0};
 
     script_runner m_runner;
 

include/modules/systray.hpp

@@ -1,41 +0,0 @@
-#if DEBUG
-#pragma once
-
-#include "modules/meta/static_module.hpp"
-
-POLYBAR_NS
-
-class connection;
-
-namespace modules {
-  /**
-   * Module used to display information about the
-   * currently active X window.
-   */
-  class systray_module : public static_module<systray_module> {
-   public:
-    explicit systray_module(const bar_settings&, string);
-
-    void update();
-    bool build(builder* builder, const string& tag) const;
-
-    static constexpr auto TYPE = "internal/systray";
-
-    static constexpr auto EVENT_TOGGLE = "toggle";
-
-   protected:
-    void action_toggle();
-
-   private:
-    static constexpr const char* TAG_LABEL_TOGGLE{"<label-toggle>"};
-    static constexpr const char* TAG_TRAY_CLIENTS{"<tray-clients>"};
-
-    connection& m_connection;
-    label_t m_label;
-
-    bool m_hidden{false};
-  };
-}  // namespace modules
-
-POLYBAR_NS_END
-#endif

include/modules/temperature.hpp

@@ -3,6 +3,7 @@
 #include <istream>
 
 #include "modules/meta/timer_module.hpp"
+#include "modules/meta/types.hpp"
 #include "settings.hpp"
 
 POLYBAR_NS
@@ -12,13 +13,13 @@ namespace modules {
 
   class temperature_module : public timer_module<temperature_module> {
    public:
-    explicit temperature_module(const bar_settings&, string);
+    explicit temperature_module(const bar_settings&, string, const config&);
 
     bool update();
     string get_format() const;
     bool build(builder* builder, const string& tag) const;
 
-    static constexpr auto TYPE = "internal/temperature";
+    static constexpr auto TYPE = TEMPERATURE_TYPE;
 
    private:
     static constexpr auto TAG_LABEL = "<label>";
@@ -30,6 +31,7 @@ namespace modules {
     ramp_t m_ramp;
 
     string m_path;
+    string m_zone_type;
     int m_zone = 0;
     // Base temperature used for where to start the ramp
     int m_tempbase = 0;

include/modules/text.hpp

@@ -1,19 +1,28 @@
 #pragma once
 
 #include "modules/meta/static_module.hpp"
+#include "modules/meta/types.hpp"
 
 POLYBAR_NS
 
 namespace modules {
   class text_module : public static_module<text_module> {
    public:
-    explicit text_module(const bar_settings&, string);
+    explicit text_module(const bar_settings&, string, const config&);
 
     void update() {}
     string get_format() const;
     string get_output();
+    bool build(builder* builder, const string& tag) const;
 
-    static constexpr auto TYPE = "custom/text";
+    static constexpr auto TYPE = TEXT_TYPE;
+
+   private:
+    static constexpr const char* TAG_LABEL{"<label>"};
+
+    label_t m_label;
+
+    string m_format{DEFAULT_FORMAT};
   };
 } // namespace modules
 

include/modules/tray.hpp

@@ -0,0 +1,39 @@
+#pragma once
+
+#include "common.hpp"
+#include "components/bar.hpp"
+#include "modules/meta/static_module.hpp"
+#include "modules/meta/types.hpp"
+#include "x11/tray_manager.hpp"
+
+POLYBAR_NS
+namespace modules {
+/**
+ * Wraps the tray_manager in a module.
+ *
+ * The module produces the `%{Pt}` formatting tag, which is used by the renderer
+ * to place the tray.
+ * The visibility of the tray icons is directly tied to the visibility of the
+ * module.
+ */
+class tray_module : public static_module<tray_module> {
+ public:
+  explicit tray_module(const bar_settings& bar_settings, string name_, const config&);
+  string get_format() const;
+
+  void set_visible(bool value) override;
+
+  void start() override;
+
+  bool build(builder* builder, const string& tag) const;
+  void update() {}
+
+  static constexpr auto TYPE = TRAY_TYPE;
+
+ private:
+  static constexpr const char* TAG_TRAY{"<tray>"};
+
+  tray::manager m_tray;
+};
+} // namespace modules
+POLYBAR_NS_END

include/modules/unsupported.hpp

@@ -1,71 +0,0 @@
-#pragma once
-
-#include "modules/meta/base.hpp"
-#include "modules/meta/base.inl"
-
-POLYBAR_NS
-
-namespace modules {
-  struct module_interface;
-
-#define DEFINE_UNSUPPORTED_MODULE(MODULE_NAME, MODULE_TYPE)                             \
-  class MODULE_NAME : public module_interface {                                         \
-   public:                                                                              \
-    MODULE_NAME(const bar_settings, string) {                                           \
-      throw application_error("No built-in support for '" + string{MODULE_TYPE} + "'"); \
-    }                                                                                   \
-    static constexpr auto TYPE = MODULE_TYPE;                                           \
-    string type() const override {                                                      \
-      return "";                                                                        \
-    }                                                                                   \
-    string name_raw() const override {                                                  \
-      return "";                                                                        \
-    }                                                                                   \
-    string name() const override {                                                      \
-      return "";                                                                        \
-    }                                                                                   \
-    bool running() const override {                                                     \
-      return false;                                                                     \
-    }                                                                                   \
-    bool visible() const override {                                                     \
-      return false;                                                                     \
-    }                                                                                   \
-    void start() override {}                                                            \
-    void stop() override {}                                                             \
-    void join() override {}                                                             \
-    void halt(string) override {}                                                       \
-    string contents() override {                                                        \
-      return "";                                                                        \
-    }                                                                                   \
-    bool input(const string&, const string&) override {                                 \
-      return false;                                                                     \
-    }                                                                                   \
-  }
-
-#if not ENABLE_I3
-  DEFINE_UNSUPPORTED_MODULE(i3_module, "internal/i3");
-#endif
-#if not ENABLE_DWM
-  DEFINE_UNSUPPORTED_MODULE(dwm_module, "internal/dwm");
-#endif
-#if not ENABLE_MPD
-  DEFINE_UNSUPPORTED_MODULE(mpd_module, "internal/mpd");
-#endif
-#if not ENABLE_NETWORK
-  DEFINE_UNSUPPORTED_MODULE(network_module, "internal/network");
-#endif
-#if not ENABLE_ALSA
-  DEFINE_UNSUPPORTED_MODULE(alsa_module, "internal/alsa");
-#endif
-#if not ENABLE_PULSEAUDIO
-  DEFINE_UNSUPPORTED_MODULE(pulseaudio_module, "internal/pulseaudio");
-#endif
-#if not ENABLE_CURL
-  DEFINE_UNSUPPORTED_MODULE(github_module, "internal/github");
-#endif
-#if not ENABLE_XKEYBOARD
-  DEFINE_UNSUPPORTED_MODULE(xkeyboard_module, "internal/xkeyboard");
-#endif
-}  // namespace modules
-
-POLYBAR_NS_END

include/modules/xbacklight.hpp

@@ -3,6 +3,7 @@
 #include "components/config.hpp"
 #include "modules/meta/event_handler.hpp"
 #include "modules/meta/static_module.hpp"
+#include "modules/meta/types.hpp"
 #include "settings.hpp"
 #include "x11/extensions/randr.hpp"
 
@@ -24,13 +25,13 @@ namespace modules {
    */
   class xbacklight_module : public static_module<xbacklight_module>, public event_handler<evt::randr_notify> {
    public:
-    explicit xbacklight_module(const bar_settings& bar, string name_);
+    explicit xbacklight_module(const bar_settings& bar, string name_, const config&);
 
     void update();
     string get_output();
     bool build(builder* builder, const string& tag) const;
 
-    static constexpr auto TYPE = "internal/xbacklight";
+    static constexpr auto TYPE = XBACKLIGHT_TYPE;
 
     static constexpr const char* EVENT_INC = "inc";
     static constexpr const char* EVENT_DEC = "dec";