wip(refactor): Cairo drawing

.ycm_extra_conf.py

@@ -52,8 +52,8 @@ flags.append('-I'+ DirectoryOfThisScript() +'/lib/concurrentqueue/include')
 flags.append('-I'+ DirectoryOfThisScript() +'/lib/i3ipcpp/include')
 flags.append('-I'+ DirectoryOfThisScript() +'/lib/xpp/include')
 flags.append('-I'+ DirectoryOfThisScript() +'/tests')
-flags.append('-I/usr/include/freetype2')
 flags.append('-I/usr/include')
+flags.append('-I/usr/include/freetype2')
 
 def MakeRelativePathsInFlagsAbsolute( flags, working_directory ):
   if not working_directory:

cmake/build/core.cmake

@@ -56,8 +56,6 @@ if(CXXLIB_CLANG)
 elseif(CXXLIB_GCC)
   message_colored(STATUS "Linking against libstdc++" 32)
   set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -lstdc++")
-else()
-  message_colored(STATUS "No preferred c++lib specified... linking against system default" 33)
 endif()
 
 if(ENABLE_CCACHE)

cmake/build/options.cmake

@@ -50,13 +50,13 @@ option(CXXLIB_GCC         "Link against stdlibc++"     OFF)
 
 option(BUILD_IPC_MSG      "Build ipc messager"         ON)
 option(BUILD_TESTS        "Build testsuite"            OFF)
-option(DEBUG_LOGGER       "Enable extra debug logging" OFF)
-option(DEBUG_LOGGER_TRACE "Enable verbose trace logs"  OFF)
-option(DEBUG_HINTS        "Enable hints rendering"     OFF)
-option(DEBUG_WHITESPACE   "Enable whitespace debug"    OFF)
 
-if(NOT DEBUG_LOGGER AND DEBUG_LOGGER_TRACE)
+if(DEBUG)
-  set(DEBUG_LOGGER_TRACE OFF)
+  option(DEBUG_LOGGER         "Debug logging"            OFF)
+  option(DEBUG_LOGGER_VERBOSE "Debug logging (verbose)"  OFF)
+  option(DEBUG_HINTS          "Debug clickable areas"    OFF)
+  option(DEBUG_WHITESPACE     "Debug whitespace"         OFF)
+  option(DEBUG_FONTCONFIG     "Debug fontconfig"         OFF)
 endif()
 
 option(ENABLE_CCACHE      "Enable ccache support"      OFF)

cmake/build/summary.cmake

@@ -11,69 +11,72 @@ function(colored_option message_level text var color_on color_off)
   endif()
 endfunction()
 
-message(STATUS "--------------------------")
+message(STATUS " Build:")
 if(CMAKE_BUILD_TYPE)
-  message_colored(STATUS " Build type: ${CMAKE_BUILD_TYPE}" "32;1")
+  message_colored(STATUS "   Type: ${CMAKE_BUILD_TYPE}" "37;2")
 else()
-  message_colored(STATUS " Build type: NONE" "33;1")
+  message_colored(STATUS "   Type: NONE" "33;1")
 endif()
-message(STATUS " Compiler C: ${CMAKE_C_COMPILER}")
-message(STATUS " Compiler C++: ${CMAKE_CXX_COMPILER}")
-message(STATUS " Compiler flags: ${CMAKE_CXX_FLAGS}")
 
 string(TOLOWER "${CMAKE_BUILD_TYPE}" CMAKE_BUILD_TYPE_LOWER)
 if(CMAKE_BUILD_TYPE_LOWER STREQUAL "debug")
-  message(STATUS "   debug flags: ${CMAKE_CXX_FLAGS_DEBUG}")
   if(NOT DEFINED ${DEBUG_LOGGER})
     set(DEBUG_LOGGER ON)
   endif()
   if(NOT DEFINED ${ENABLE_CCACHE})
     set(ENABLE_CCACHE ON)
   endif()
+  message_colored(STATUS "   CC: ${CMAKE_C_COMPILER} ${CMAKE_C_FLAGS} ${CMAKE_C_FLAGS_DEBUG}" "37;2")
+  message_colored(STATUS "   CXX: ${CMAKE_CXX_COMPILER} ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_DEBUG}" "37;2")
+  message_colored(STATUS "   LD: ${CMAKE_LINKER} ${CMAKE_EXE_LINKER_FLAGS}${CMAKE_EXE_LINKER_FLAGS_DEBUG}" "37;2")
 elseif(CMAKE_BUILD_TYPE_LOWER STREQUAL "release")
-  message(STATUS "   release: ${CMAKE_CXX_FLAGS_RELEASE}")
+  message_colored(STATUS "   CC: ${CMAKE_C_COMPILER} ${CMAKE_C_FLAGS} ${CMAKE_C_FLAGS_RELEASE}" "37;2")
+  message_colored(STATUS "   CXX: ${CMAKE_CXX_COMPILER} ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_RELEASE}" "37;2")
+  message_colored(STATUS "   LD: ${CMAKE_LINKER} ${CMAKE_EXE_LINKER_FLAGS}${CMAKE_EXE_LINKER_FLAGS_RELEASE}" "37;2")
 elseif(CMAKE_BUILD_TYPE_LOWER STREQUAL "sanitize")
-  message(STATUS "   sanitize: ${CMAKE_CXX_FLAGS_SANITIZE}")
+  message_colored(STATUS "   CC: ${CMAKE_C_COMPILER} ${CMAKE_C_FLAGS} ${CMAKE_C_FLAGS_SANITIZE}" "37;2")
+  message_colored(STATUS "   CXX: ${CMAKE_CXX_COMPILER} ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_SANITIZE}" "37;2")
+  message_colored(STATUS "   LD: ${CMAKE_LINKER} ${CMAKE_EXE_LINKER_FLAGS}${CMAKE_EXE_LINKER_FLAGS_SANITIZE}" "37;2")
 elseif(CMAKE_BUILD_TYPE_LOWER STREQUAL "minsizerel")
-  message(STATUS "   minsizerel: ${CMAKE_CXX_FLAGS_MINSIZEREL}")
+  message_colored(STATUS "   CC: ${CMAKE_C_COMPILER} ${CMAKE_C_FLAGS} ${CMAKE_C_FLAGS_MINSIZEREL}" "37;2")
+  message_colored(STATUS "   CXX: ${CMAKE_CXX_COMPILER} ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_MINSIZEREL}" "37;2")
+  message_colored(STATUS "   LD: ${CMAKE_LINKER} ${CMAKE_EXE_LINKER_FLAGS}${CMAKE_EXE_LINKER_FLAGS_MINSIZEREL}" "37;2")
 elseif(CMAKE_BUILD_TYPE_LOWER STREQUAL "relwithdebinfo")
-  message(STATUS "   relwithdebinfo: ${CMAKE_CXX_FLAGS_RELWITHDEBINFO}")
+  message_colored(STATUS "   CC: ${CMAKE_C_COMPILER} ${CMAKE_C_FLAGS} ${CMAKE_C_FLAGS_RELWITHDEBINFO}" "37;2")
+  message_colored(STATUS "   CXX: ${CMAKE_CXX_COMPILER} ${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_RELWITHDEBINFO}" "37;2")
+  message_colored(STATUS "   LD: ${CMAKE_LINKER} ${CMAKE_EXE_LINKER_FLAGS}${CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO}" "37;2")
 endif()
 
 if(CMAKE_EXE_LINKER_FLAGS)
-  message(STATUS " Linker flags: ${CMAKE_EXE_LINKER_FLAGS}")
+  message_colored(STATUS "   LD: ${CMAKE_EXE_LINKER_FLAGS}" "37;2")
 endif()
 
-if(CXXLIB_CLANG)
+message(STATUS " Targets:")
-  message(STATUS " C++ library: libc++")
+colored_option(STATUS "   polybar-msg" BUILD_IPC_MSG "32;1" "37;2")
-elseif(CXXLIB_GCC)
+colored_option(STATUS "   testsuite" BUILD_TESTS "32;1" "37;2")
-  message(STATUS " C++ library: libstdc++")
-else()
-  message(STATUS " C++ library: system default")
-endif()
 
-message(STATUS "--------------------------")
+message(STATUS " Module supprt:")
-colored_option(STATUS " Build polybar-msg    ${BUILD_IPC_MSG}" BUILD_IPC_MSG "32;1" "37;2")
+colored_option(STATUS "   alsa" ENABLE_ALSA "32;1" "37;2")
-colored_option(STATUS " Build testsuite      ${BUILD_TESTS}" BUILD_TESTS "32;1" "37;2")
+colored_option(STATUS "   curl" ENABLE_CURL "32;1" "37;2")
-colored_option(STATUS " Debug logging        ${DEBUG_LOGGER}" DEBUG_LOGGER "32;1" "37;2")
+colored_option(STATUS "   i3" ENABLE_I3 "32;1" "37;2")
-colored_option(STATUS " + Verbose tracing    ${DEBUG_LOGGER_TRACE}" DEBUG_LOGGER_TRACE "32;1" "37;2")
+colored_option(STATUS "   mpd" ENABLE_MPD "32;1" "37;2")
-colored_option(STATUS " Draw debug hints     ${DEBUG_HINTS}" DEBUG_HINTS "32;1" "37;2")
+colored_option(STATUS "   network" ENABLE_NETWORK "32;1" "37;2")
-colored_option(STATUS " Draw whitespace      ${DEBUG_WHITESPACE}" DEBUG_WHITESPACE "32;1" "37;2")
+message(STATUS " X extensions:")
-colored_option(STATUS " Enable ccache        ${ENABLE_CCACHE}" ENABLE_CCACHE "32;1" "37;2")
+colored_option(STATUS "   XRandR" WITH_XRANDR "32;1" "37;2")
-message(STATUS "--------------------------")
+colored_option(STATUS "   XRandR (enable monitors)" ENABLE_XRANDR_MONITORS "32;1" "37;2")
-colored_option(STATUS " Enable alsa          ${ENABLE_ALSA}" ENABLE_ALSA "32;1" "37;2")
+colored_option(STATUS "   XRender" WITH_XRENDER "32;1" "37;2")
-colored_option(STATUS " Enable curl          ${ENABLE_CURL}" ENABLE_CURL "32;1" "37;2")
+colored_option(STATUS "   XDamage" WITH_XDAMAGE "32;1" "37;2")
-colored_option(STATUS " Enable i3            ${ENABLE_I3}" ENABLE_I3 "32;1" "37;2")
+colored_option(STATUS "   XSync" WITH_XSYNC "32;1" "37;2")
-colored_option(STATUS " Enable mpd           ${ENABLE_MPD}" ENABLE_MPD "32;1" "37;2")
+colored_option(STATUS "   XComposite" WITH_XCOMPOSITE "32;1" "37;2")
-colored_option(STATUS " Enable network       ${ENABLE_NETWORK}" ENABLE_NETWORK "32;1" "37;2")
+colored_option(STATUS "   Xkb" WITH_XKB "32;1" "37;2")
-message(STATUS "--------------------------")
+colored_option(STATUS "   Xrm" WITH_XRM "32;1" "37;2")
-colored_option(STATUS " XRANDR support       ${WITH_XRANDR}" WITH_XRANDR "32;1" "37;2")
+
-colored_option(STATUS " + XRandR monitors    ${ENABLE_XRANDR_MONITORS}" ENABLE_XRANDR_MONITORS "32;1" "37;2")
+if(CMAKE_BUILD_TYPE_LOWER STREQUAL "debug")
-colored_option(STATUS " XRENDER support      ${WITH_XRENDER}" WITH_XRENDER "32;1" "37;2")
+  message(STATUS " Debug options:")
-colored_option(STATUS " XDAMAGE support      ${WITH_XDAMAGE}" WITH_XDAMAGE "32;1" "37;2")
+  colored_option(STATUS "   Trace logging" DEBUG_LOGGER "32;1" "37;2")
-colored_option(STATUS " XSYNC support        ${WITH_XSYNC}" WITH_XSYNC "32;1" "37;2")
+  colored_option(STATUS "   Trace logging (verbose)" DEBUG_LOGGER_VERBOSE "32;1" "37;2")
-colored_option(STATUS " XCOMPOSITE support   ${WITH_XCOMPOSITE}" WITH_XCOMPOSITE "32;1" "37;2")
+  colored_option(STATUS "   Draw clickable areas" DEBUG_HINTS "32;1" "37;2")
-colored_option(STATUS " XKB support          ${WITH_XKB}" WITH_XKB "32;1" "37;2")
+  colored_option(STATUS "   Print fc-match details" DEBUG_FONTCONFIG "32;1" "37;2")
-message(STATUS "--------------------------")
+  colored_option(STATUS "   Enable window shading" DEBUG_SHADED "32;1" "37;2")
-colored_option(STATUS " xcb-util-xrm         ${WITH_XRM}" WITH_XRM "32;1" "37;2")
+  message(STATUS "--------------------------")
-message(STATUS "--------------------------")
+endif()

include/cairo/context.hpp

@@ -0,0 +1,258 @@
+#pragma once
+
+#include <cairo/cairo-xcb.h>
+#include <algorithm>
+#include <cmath>
+#include <deque>
+
+#include "cairo/font.hpp"
+#include "cairo/surface.hpp"
+#include "cairo/types.hpp"
+#include "cairo/utils.hpp"
+#include "common.hpp"
+#include "components/logger.hpp"
+#include "errors.hpp"
+#include "utils/color.hpp"
+#include "utils/string.hpp"
+
+POLYBAR_NS
+
+namespace cairo {
+  class context {
+   public:
+    explicit context(const surface& surface, const logger& log) : m_c(cairo_create(surface)), m_log(log) {
+      auto status = cairo_status(m_c);
+      if (status != CAIRO_STATUS_SUCCESS) {
+        throw application_error(sstream() << "cairo_status(): " << cairo_status_to_string(status));
+      }
+      cairo_set_antialias(m_c, CAIRO_ANTIALIAS_GOOD);
+    }
+
+    virtual ~context() {
+      cairo_destroy(m_c);
+    }
+
+    operator cairo_t*() const {
+      return m_c;
+    }
+
+    context& operator<<(const surface& s) {
+      cairo_set_source_surface(m_c, s, 0.0, 0.0);
+      return *this;
+    }
+
+    context& operator<<(cairo_operator_t o) {
+      cairo_set_operator(m_c, o);
+      return *this;
+    }
+
+    context& operator<<(cairo_pattern_t* s) {
+      cairo_set_source(m_c, s);
+      return *this;
+    }
+
+    context& operator<<(const uint32_t& c) {
+      // clang-format off
+      cairo_set_source_rgba(m_c,
+        color_util::red_channel<uint8_t>(c) / 255.0,
+        color_util::green_channel<uint8_t>(c) / 255.0,
+        color_util::blue_channel<uint8_t>(c) / 255.0,
+        color_util::alpha_channel<uint8_t>(c) / 255.0);
+      // clang-format on
+      return *this;
+    }
+
+    context& operator<<(const abspos& p) {
+      cairo_move_to(m_c, p.x, p.y);
+      return *this;
+    }
+
+    context& operator<<(const relpos& p) {
+      cairo_rel_move_to(m_c, p.x, p.y);
+      return *this;
+    }
+
+    context& operator<<(const rgba& f) {
+      cairo_set_source_rgba(m_c, f.r, f.g, f.b, f.a);
+      return *this;
+    }
+
+    context& operator<<(const rect& f) {
+      cairo_rectangle(m_c, f.x, f.y, f.w, f.h);
+      return *this;
+    }
+
+    context& operator<<(const line& l) {
+      struct line p {
+        l.x1, l.y1, l.x2, l.y2, l.w
+      };
+      snap(&p.x1, &p.y1);
+      snap(&p.x2, &p.y2);
+      cairo_move_to(m_c, p.x1, p.y1);
+      cairo_line_to(m_c, p.x2, p.y2);
+      cairo_set_line_width(m_c, p.w);
+      cairo_stroke(m_c);
+      return *this;
+    }
+
+    context& operator<<(const linear_gradient& l) {
+      if (l.steps.size() >= 2) {
+        auto pattern = cairo_pattern_create_linear(l.x0, l.y0, l.x1, l.y1);
+        *this << pattern;
+        auto stops = l.steps.size();
+        auto step = 1.0 / (stops - 1);
+        auto offset = 0.0;
+        for (auto&& color : l.steps) {
+          // clang-format off
+          cairo_pattern_add_color_stop_rgba(pattern, offset,
+            color_util::red_channel<uint8_t>(color) / 255.0,
+            color_util::green_channel<uint8_t>(color) / 255.0,
+            color_util::blue_channel<uint8_t>(color) / 255.0,
+            color_util::alpha_channel<uint8_t>(color) / 255.0);
+          // clang-format on
+          offset += step;
+        }
+        cairo_pattern_destroy(pattern);
+      }
+      return *this;
+    }
+
+    context& operator<<(const textblock& t) {
+      // Sort the fontlist so that the preferred font is tested first
+      auto& fns = m_fonts;
+      std::sort(fns.begin(), fns.end(), [&](const unique_ptr<font>& a, const unique_ptr<font>&) {
+        if (t.fontindex > 0 && std::distance(fns.begin(), std::find(fns.begin(), fns.end(), a)) == t.fontindex - 1) {
+          return -1;
+        } else {
+          return 0;
+        }
+      });
+
+      string utf8 = string(t.contents);
+      unicode_charlist chars;
+      utils::utf8_to_ucs4((const uint8_t*)utf8.c_str(), chars);
+
+      while (!chars.empty()) {
+        auto remaining = chars.size();
+        for (auto&& f : fns) {
+          auto matches = f->match(chars);
+          if (!matches) {
+            continue;
+          }
+
+          string subset;
+          auto end = chars.begin();
+          while (matches-- && end != chars.end()) {
+            subset += utf8.substr(end->offset, end->length);
+            end++;
+          }
+
+          f->use(m_c);
+
+          cairo_text_extents_t extents;
+          f->textwidth(utf8, &extents);
+
+          save(); // encapsulate the y pos update
+          *this << relpos{0.0, extents.height / 2.0 - f->extents().descent + f->offset()};
+          f->render(subset);
+          restore();
+
+          *this << relpos{extents.width, 0.0};
+
+          chars.erase(chars.begin(), end);
+          break;
+        }
+
+        if (chars.empty()) {
+          break;
+        } else if (remaining != chars.size()) {
+          continue;
+        }
+
+        char unicode[5]{'\0'};
+        utils::ucs4_to_utf8(unicode, chars.begin()->codepoint);
+        m_log.warn("Dropping unmatched character %s (U+%04x)", unicode, chars.begin()->codepoint);
+        utf8.erase(chars.begin()->offset, chars.begin()->length);
+        for (auto&& c : chars) {
+          c.offset -= chars.begin()->length;
+        }
+        chars.erase(chars.begin(), ++chars.begin());
+      }
+
+      return *this;
+    }
+
+    context& operator<<(unique_ptr<font>&& f) {
+      m_fonts.emplace_back(forward<decltype(f)>(f));
+      return *this;
+    }
+
+    context& save(bool save_point = true) {
+      if (save_point) {
+        m_points.emplace_front(make_pair<double, double>(0.0, 0.0));
+        position(&m_points.front().first, &m_points.front().second);
+      }
+      cairo_save(m_c);
+      return *this;
+    }
+
+    context& restore(bool restore_point = true) {
+      if (restore_point) {
+        *this << abspos{m_points.front().first, m_points.front().first};
+        m_points.pop_front();
+      }
+      cairo_restore(m_c);
+      return *this;
+    }
+
+    context& paint() {
+      cairo_paint(m_c);
+      return *this;
+    }
+
+    context& paint(double alpha) {
+      cairo_paint_with_alpha(m_c, alpha);
+      return *this;
+    }
+
+    context& fill() {
+      cairo_fill(m_c);
+      return *this;
+    }
+
+    context& clip(const rect& r) {
+      *this << r;
+      cairo_clip(m_c);
+      return *this;
+    }
+
+    context& reset_clip() {
+      cairo_reset_clip(m_c);
+      return *this;
+    }
+
+    context& position(double* x, double* y) {
+      *x = 0.0;
+      *y = 0.0;
+      if (cairo_has_current_point(m_c)) {
+        cairo_get_current_point(m_c, x, y);
+      }
+      return *this;
+    }
+
+    context& snap(double* x, double* y) {
+      cairo_user_to_device(m_c, x, y);
+      *x = ((int)*x + 0.5);
+      *y = ((int)*y + 0.5);
+      return *this;
+    }
+
+   protected:
+    cairo_t* m_c;
+    const logger& m_log;
+    vector<unique_ptr<font>> m_fonts;
+    std::deque<pair<double, double>> m_points;
+  };
+}
+
+POLYBAR_NS_END

include/cairo/font.hpp

@@ -0,0 +1,283 @@
+#pragma once
+
+#include <cairo/cairo-ft.h>
+#include <list>
+#include <set>
+#include <string>
+
+#include "common.hpp"
+#include "errors.hpp"
+#include "settings.hpp"
+#include "utils/math.hpp"
+#include "utils/scope.hpp"
+#include "utils/string.hpp"
+
+POLYBAR_NS
+
+namespace cairo {
+  namespace details {
+    /**
+     * @brief Global pointer to the Freetype library handler
+     */
+    static FT_Library g_ftlib;
+
+    /**
+     * @brief RAII wrapper used to access the underlying
+     * FT_Face of a scaled font face
+     */
+    class ft_face_lock {
+     public:
+      explicit ft_face_lock(cairo_scaled_font_t* font) : m_font(font) {
+        m_face = cairo_ft_scaled_font_lock_face(m_font);
+      }
+      ~ft_face_lock() {
+        cairo_ft_scaled_font_unlock_face(m_font);
+      }
+
+      operator FT_Face() const {
+        return m_face;
+      }
+
+     private:
+      cairo_scaled_font_t* m_font;
+      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() : codepoint(0), offset(0), length(0) {}
+
+    unsigned long codepoint;
+    int offset;
+    int length;
+  };
+  using unicode_charlist = std::list<unicode_character>;
+
+  /**
+   * @brief Abstract font face
+   */
+  class font {
+   public:
+    explicit font(cairo_t* cairo, double offset) : m_cairo(cairo), m_offset(offset) {}
+    virtual ~font() {};
+
+    virtual string name() const = 0;
+    virtual string file() const = 0;
+    virtual double offset() const = 0;
+    virtual double size() const = 0;
+
+    virtual void use(cairo_t* c) {
+      cairo_set_font_face(c, cairo_font_face_reference(m_font_face));
+    }
+
+    virtual size_t match(unicode_charlist& charlist) = 0;
+    virtual size_t render(const string& text) = 0;
+    virtual void textwidth(const string& text, cairo_text_extents_t* extents) = 0;
+
+    cairo_font_extents_t extents() const {
+      return m_extents;
+    }
+
+   protected:
+    cairo_t* m_cairo;
+    cairo_font_face_t* m_font_face{nullptr};
+    cairo_font_extents_t m_extents{};
+    double m_offset{0.0};
+  };
+
+  /**
+   * @brief Font based on fontconfig/freetype
+   */
+  class font_fc : public font {
+   public:
+    explicit font_fc(cairo_t* cairo, FcPattern* pattern, double offset) : font(cairo, offset), m_pattern(pattern) {
+      cairo_matrix_t fm;
+      cairo_matrix_t ctm;
+      cairo_matrix_init_scale(&fm, size(), size());
+      cairo_get_matrix(m_cairo, &ctm);
+
+      auto fontface = cairo_ft_font_face_create_for_pattern(m_pattern);
+      auto opts = cairo_font_options_create();
+      m_scaled = cairo_scaled_font_create(fontface, &fm, &ctm, opts);
+      cairo_font_options_destroy(opts);
+      cairo_font_face_destroy(fontface);
+
+      auto status = cairo_scaled_font_status(m_scaled);
+      if (status != CAIRO_STATUS_SUCCESS) {
+        throw application_error(sstream() << "cairo_scaled_font_create(): " << cairo_status_to_string(status));
+      }
+
+      auto lock = make_unique<details::ft_face_lock>(cairo_scaled_font_reference(m_scaled));
+      auto face = static_cast<FT_Face>(*lock);
+
+      if (FT_Select_Charmap(face, FT_ENCODING_UNICODE) == FT_Err_Ok) {
+        return;
+      } else if (FT_Select_Charmap(face, FT_ENCODING_BIG5) == FT_Err_Ok) {
+        return;
+      } else if (FT_Select_Charmap(face, FT_ENCODING_SJIS) == FT_Err_Ok) {
+        return;
+      }
+    }
+
+    ~font_fc() override {
+      if (m_scaled != nullptr) {
+        cairo_scaled_font_destroy(m_scaled);
+      }
+      if (m_pattern != nullptr) {
+        FcPatternDestroy(m_pattern);
+      }
+    }
+
+    string name() const override {
+      return property("family");
+    }
+
+    string file() const override {
+      return property("file");
+    }
+
+    double offset() const override {
+      return m_offset;
+    }
+
+    double size() const override {
+      bool scalable;
+      double px;
+      property(FC_SCALABLE, &scalable);
+      if (scalable) {
+        property(FC_SIZE, &px);
+      } else {
+        property(FC_PIXEL_SIZE, &px);
+        px = static_cast<int>(px + 0.5);
+      }
+      return px;
+    }
+
+    void use(cairo_t* c) override {
+      cairo_set_scaled_font(c, cairo_scaled_font_reference(m_scaled));
+    }
+
+    size_t match(unicode_charlist& charlist) override {
+      auto lock = make_unique<details::ft_face_lock>(cairo_scaled_font_reference(m_scaled));
+      auto face = static_cast<FT_Face>(*lock);
+      size_t available_chars = 0;
+      for (auto&& c : charlist) {
+        if (FT_Get_Char_Index(face, c.codepoint)) {
+          available_chars++;
+        } else {
+          break;
+        }
+      }
+
+      return available_chars;
+    }
+
+    size_t render(const string& text) override {
+      double x, y;
+      cairo_get_current_point(m_cairo, &x, &y);
+
+      cairo_glyph_t* glyphs{nullptr};
+      cairo_text_cluster_t* clusters{nullptr};
+      cairo_text_cluster_flags_t cf{};
+      int nglyphs = 0, nclusters = 0;
+      string utf8 = string(text);
+      auto status = cairo_scaled_font_text_to_glyphs(cairo_scaled_font_reference(m_scaled), x, y, utf8.c_str(),
+          utf8.size(), &glyphs, &nglyphs, &clusters, &nclusters, &cf);
+
+      if (status != CAIRO_STATUS_SUCCESS) {
+        throw application_error(sstream() << "cairo_scaled_font_status()" << cairo_status_to_string(status));
+      }
+
+      size_t bytes = 0;
+      for (int g = 0; g < nglyphs; g++) {
+        if (glyphs[g].index) {
+          bytes += clusters[g].num_bytes;
+        } else {
+          break;
+        }
+      }
+
+      if (bytes) {
+        utf8 = text.substr(0, bytes);
+        cairo_scaled_font_text_to_glyphs(
+            m_scaled, x, y, utf8.c_str(), utf8.size(), &glyphs, &nglyphs, &clusters, &nclusters, &cf);
+        cairo_show_text_glyphs(m_cairo, utf8.c_str(), utf8.size(), glyphs, nglyphs, clusters, nclusters, cf);
+      }
+
+      return bytes;
+    }
+
+    void textwidth(const string& text, cairo_text_extents_t* extents) override {
+      cairo_scaled_font_text_extents(cairo_scaled_font_reference(m_scaled), text.c_str(), extents);
+    }
+
+   protected:
+    string property(string&& property) const {
+      FcChar8* file;
+      if (FcPatternGetString(m_pattern, property.c_str(), 0, &file) == FcResultMatch) {
+        return string(reinterpret_cast<char*>(file));
+      } else {
+        return "";
+      }
+    }
+
+    void property(string&& property, bool* dst) const {
+      FcBool b;
+      FcPatternGetBool(m_pattern, property.c_str(), 0, &b);
+      *dst = b;
+    }
+
+    void property(string&& property, double* dst) const {
+      FcPatternGetDouble(m_pattern, property.c_str(), 0, dst);
+    }
+
+    void property(string&& property, int* dst) const {
+      FcPatternGetInteger(m_pattern, property.c_str(), 0, dst);
+    }
+
+   private:
+    cairo_scaled_font_t* m_scaled{nullptr};
+    FcPattern* m_pattern{nullptr};
+  };
+
+  /**
+   * Match and create font from given fontconfig pattern
+   */
+  decltype(auto) make_font(cairo_t* cairo, string&& fontname, double offset) {
+    static bool fc_init{false};
+    if (!fc_init && !(fc_init = FcInit())) {
+      throw application_error("Could not load fontconfig");
+    } else if (FT_Init_FreeType(&details::g_ftlib) != FT_Err_Ok) {
+      throw application_error("Could not load FreeType");
+    }
+
+    static auto fc_cleanup = scope_util::make_exit_handler([] {
+      FT_Done_FreeType(details::g_ftlib);
+      FcFini();
+    });
+
+    auto pattern = FcNameParse((FcChar8*)fontname.c_str());
+    FcDefaultSubstitute(pattern);
+    FcConfigSubstitute(nullptr, pattern, FcMatchPattern);
+
+    FcResult result;
+    FcPattern* match = FcFontMatch(nullptr, pattern, &result);
+    FcPatternDestroy(pattern);
+
+    if (match == nullptr) {
+      throw application_error("Could not load font \"" + fontname + "\"");
+    }
+
+#ifdef DEBUG_FONTCONFIG
+    FcPatternPrint(match);
+#endif
+
+    return make_unique<font_fc>(cairo, match, offset);
+  }
+}
+
+POLYBAR_NS_END

include/cairo/fwd.hpp

@@ -0,0 +1,15 @@
+#pragma once
+
+#include "common.hpp"
+
+POLYBAR_NS
+
+namespace cairo {
+  class context;
+  class surface;
+  class xcb_surface;
+  class font;
+  class font_fc;
+}
+
+POLYBAR_NS_END

include/cairo/surface.hpp

@@ -0,0 +1,50 @@
+#pragma once
+
+#include <cairo/cairo-xcb.h>
+
+#include "cairo/types.hpp"
+#include "common.hpp"
+#include "utils/color.hpp"
+
+POLYBAR_NS
+
+namespace cairo {
+  class surface {
+   public:
+    explicit surface(cairo_surface_t* s) : m_s(s) {}
+    virtual ~surface() {
+      cairo_surface_destroy(m_s);
+    }
+
+    operator cairo_surface_t*() const {
+      return m_s;
+    }
+
+    surface& flush() {
+      cairo_surface_flush(m_s);
+      return *this;
+    }
+
+    surface& dirty() {
+      cairo_surface_mark_dirty(m_s);
+      return *this;
+    }
+
+    surface& dirty(const rect& r) {
+      cairo_surface_mark_dirty_rectangle(m_s, r.x, r.y, r.w, r.h);
+      return *this;
+    }
+
+   protected:
+    cairo_surface_t* m_s;
+  };
+
+  class xcb_surface : public surface {
+   public:
+    explicit xcb_surface(xcb_connection_t* c, xcb_pixmap_t p, xcb_visualtype_t* v, int w, int h)
+        : surface(cairo_xcb_surface_create(c, p, v, w, h)) {}
+    ~xcb_surface() override {}
+  };
+}
+
+POLYBAR_NS_END

include/cairo/types.hpp

@@ -0,0 +1,46 @@
+#pragma once
+
+#include "common.hpp"
+
+POLYBAR_NS
+
+namespace cairo {
+  struct abspos {
+    double x;
+    double y;
+  };
+  struct relpos {
+    double x;
+    double y;
+  };
+
+  struct rect {
+    double x;
+    double y;
+    double w;
+    double h;
+  };
+
+  struct line {
+    double x1;
+    double y1;
+    double x2;
+    double y2;
+    double w;
+  };
+
+  struct linear_gradient {
+    double x0;
+    double y0;
+    double x1;
+    double y1;
+    vector<uint32_t> steps;
+  };
+
+  struct textblock {
+    string contents;
+    uint8_t fontindex;
+  };
+}
+
+POLYBAR_NS_END

include/cairo/utils.hpp

@@ -0,0 +1,142 @@
+#pragma once
+
+#include <cairo/cairo.h>
+#include <map>
+
+#include "cairo/font.hpp"
+#include "common.hpp"
+#include "utils/string.hpp"
+
+POLYBAR_NS
+
+namespace cairo {
+  namespace utils {
+    /**
+     * @see <cairo/cairo.h>
+     */
+    cairo_operator_t str2operator(const string& mode, cairo_operator_t fallback) {
+      if (mode.empty()) {
+        return fallback;
+      }
+      static std::map<string, cairo_operator_t> modes;
+      if (modes.empty()) {
+        modes["clear"s] = CAIRO_OPERATOR_CLEAR;
+        modes["source"s] = CAIRO_OPERATOR_SOURCE;
+        modes["over"s] = CAIRO_OPERATOR_OVER;
+        modes["in"s] = CAIRO_OPERATOR_IN;
+        modes["out"s] = CAIRO_OPERATOR_OUT;
+        modes["atop"s] = CAIRO_OPERATOR_ATOP;
+        modes["dest"s] = CAIRO_OPERATOR_DEST;
+        modes["dest-over"s] = CAIRO_OPERATOR_DEST_OVER;
+        modes["dest-in"s] = CAIRO_OPERATOR_DEST_IN;
+        modes["dest-out"s] = CAIRO_OPERATOR_DEST_OUT;
+        modes["dest-atop"s] = CAIRO_OPERATOR_DEST_ATOP;
+        modes["xor"s] = CAIRO_OPERATOR_XOR;
+        modes["add"s] = CAIRO_OPERATOR_ADD;
+        modes["saturate"s] = CAIRO_OPERATOR_SATURATE;
+        modes["multiply"s] = CAIRO_OPERATOR_MULTIPLY;
+        modes["screen"s] = CAIRO_OPERATOR_SCREEN;
+        modes["overlay"s] = CAIRO_OPERATOR_OVERLAY;
+        modes["darken"s] = CAIRO_OPERATOR_DARKEN;
+        modes["lighten"s] = CAIRO_OPERATOR_LIGHTEN;
+        modes["color-dodge"s] = CAIRO_OPERATOR_COLOR_DODGE;
+        modes["color-burn"s] = CAIRO_OPERATOR_COLOR_BURN;
+        modes["hard-light"s] = CAIRO_OPERATOR_HARD_LIGHT;
+        modes["soft-light"s] = CAIRO_OPERATOR_SOFT_LIGHT;
+        modes["difference"s] = CAIRO_OPERATOR_DIFFERENCE;
+        modes["exclusion"s] = CAIRO_OPERATOR_EXCLUSION;
+        modes["hsl-hue"s] = CAIRO_OPERATOR_HSL_HUE;
+        modes["hsl-saturation"s] = CAIRO_OPERATOR_HSL_SATURATION;
+        modes["hsl-color"s] = CAIRO_OPERATOR_HSL_COLOR;
+        modes["hsl-luminosity"s] = CAIRO_OPERATOR_HSL_LUMINOSITY;
+      }
+      auto it = modes.find(mode);
+      return it != modes.end() ? it->second : 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) {
+      if (!src) {
+        return false;
+      }
+      const unsigned char* first = src;
+      while (*first) {
+        int len = 0;
+        unsigned long result = 0;
+        if ((*first >> 7) == 0) {
+          len = 1;
+          result = *first;
+        } else if ((*first >> 5) == 6) {
+          len = 2;
+          result = *first & 31;
+        } else if ((*first >> 4) == 14) {
+          len = 3;
+          result = *first & 15;
+        } else if ((*first >> 3) == 30) {
+          len = 4;
+          result = *first & 7;
+        } else {
+          return false;
+        }
+        const unsigned char* next;
+        for (next = first + 1; *next && ((*next >> 6) == 2) && (next - first < len); next++) {
+          result = result << 6;
+          result |= *next & 63;
+        }
+        unicode_character uc_char;
+        uc_char.codepoint = result;
+        uc_char.offset = first - src;
+        uc_char.length = next - first;
+        result_list.push_back(uc_char);
+        first = next;
+      }
+      return true;
+    }
+
+    /**
+     * @brief Convert a UCS-4 codepoint to a utf-8 encoded string
+     */
+    size_t ucs4_to_utf8(char* utf8, uint32_t ucs) {
+      if (ucs <= 0x7f) {
+        *utf8 = ucs;
+        return 1;
+      } else if (ucs <= 0x07ff) {
+        *(utf8++) = ((ucs >> 6) & 0xff) | 0xc0;
+        *utf8 = (ucs & 0x3f) | 0x80;
+        return 2;
+      } else if (ucs <= 0xffff) {
+        *(utf8++) = ((ucs >> 12) & 0x0f) | 0xe0;
+        *(utf8++) = ((ucs >> 6) & 0x3f) | 0x80;
+        *utf8 = (ucs & 0x3f) | 0x80;
+        return 3;
+      } else if (ucs <= 0x1fffff) {
+        *(utf8++) = ((ucs >> 18) & 0x07) | 0xf0;
+        *(utf8++) = ((ucs >> 12) & 0x3f) | 0x80;
+        *(utf8++) = ((ucs >> 6) & 0x3f) | 0x80;
+        *utf8 = (ucs & 0x3f) | 0x80;
+        return 4;
+      } else if (ucs <= 0x03ffffff) {
+        *(utf8++) = ((ucs >> 24) & 0x03) | 0xf8;
+        *(utf8++) = ((ucs >> 18) & 0x3f) | 0x80;
+        *(utf8++) = ((ucs >> 12) & 0x3f) | 0x80;
+        *(utf8++) = ((ucs >> 6) & 0x3f) | 0x80;
+        *utf8 = (ucs & 0x3f) | 0x80;
+        return 5;
+      } else if (ucs <= 0x7fffffff) {
+        *(utf8++) = ((ucs >> 30) & 0x01) | 0xfc;
+        *(utf8++) = ((ucs >> 24) & 0x3f) | 0x80;
+        *(utf8++) = ((ucs >> 18) & 0x3f) | 0x80;
+        *(utf8++) = ((ucs >> 12) & 0x3f) | 0x80;
+        *(utf8++) = ((ucs >> 6) & 0x3f) | 0x80;
+        *utf8 = (ucs & 0x3f) | 0x80;
+        return 6;
+      } else {
+        return 0;
+      }
+    }
+  }
+}
+
+POLYBAR_NS_END

include/components/bar.hpp

@@ -4,11 +4,11 @@
 #include <mutex>
 
 #include "common.hpp"
-#include "settings.hpp"
 #include "components/types.hpp"
 #include "errors.hpp"
 #include "events/signal_fwd.hpp"
 #include "events/signal_receiver.hpp"
+#include "settings.hpp"
 #include "x11/events.hpp"
 #include "x11/types.hpp"
 #include "x11/window.hpp"
@@ -22,15 +22,14 @@ class logger;
 class parser;
 class renderer;
 class screen;
-class signal_emitter;
 class taskqueue;
 class tray_manager;
 // }}}
 
 class bar : public xpp::event::sink<evt::button_press, evt::expose, evt::property_notify, evt::enter_notify,
                 evt::leave_notify, evt::destroy_notify, evt::client_message>,
-            public signal_receiver<SIGN_PRIORITY_BAR, signals::eventqueue::start, signals::ui::tick, signals::ui::shade_window, signals::ui::unshade_window,
+            public signal_receiver<SIGN_PRIORITY_BAR, signals::eventqueue::start, signals::ui::tick,
-                signals::ui::dim_window> {
+                signals::ui::shade_window, signals::ui::unshade_window, signals::ui::dim_window> {
  public:
   using make_type = unique_ptr<bar>;
   static make_type make(bool only_initialize_values = false);

include/components/controller.hpp

@@ -36,7 +36,7 @@ using modulemap_t = std::map<alignment, vector<module_t>>;
 
 class controller : public signal_receiver<SIGN_PRIORITY_CONTROLLER, signals::eventqueue::exit_terminate, signals::eventqueue::exit_reload,
                        signals::eventqueue::notify_change, signals::eventqueue::notify_forcechange, signals::eventqueue::check_state, signals::ipc::action,
-                       signals::ipc::command, signals::ipc::hook, signals::ui::button_press> {
+                       signals::ipc::command, signals::ipc::hook, signals::ui::ready, signals::ui::button_press> {
  public:
   using make_type = unique_ptr<controller>;
   static make_type make(unique_ptr<ipc>&& ipc, unique_ptr<inotify_watch>&& config_watch);
@@ -61,6 +61,7 @@ class controller : public signal_receiver<SIGN_PRIORITY_CONTROLLER, signals::eve
   bool on(const signals::eventqueue::exit_terminate& evt);
   bool on(const signals::eventqueue::exit_reload& evt);
   bool on(const signals::eventqueue::check_state& evt);
+  bool on(const signals::ui::ready& evt);
   bool on(const signals::ui::button_press& evt);
   bool on(const signals::ipc::action& evt);
   bool on(const signals::ipc::command& evt);
@@ -78,6 +79,11 @@ class controller : public signal_receiver<SIGN_PRIORITY_CONTROLLER, signals::eve
 
   array<unique_ptr<file_descriptor>, 2> m_queuefd{};
 
+  /**
+   * @brief State flag
+   */
+  std::atomic<bool> m_process_events{false};
+
   /**
    * @brief Controls weather the output gets printed to stdout
    */

include/components/logger.hpp

@@ -41,7 +41,7 @@ class logger {
   void trace(string message, Args... args) const {
     output(loglevel::TRACE, message, args...);
   }
-#ifdef DEBUG_LOGGER_TRACE
+#ifdef DEBUG_LOGGER_VERBOSE
   template <typename... Args>
   void trace_x(string message, Args... args) const {
     output(loglevel::TRACE, message, args...);

include/components/parser.hpp

@@ -17,10 +17,6 @@ DEFINE_CHILD_ERROR(unclosed_actionblocks, parser_error);
 
 class parser {
  public:
-  struct packet {
-    uint16_t data[128]{0U};
-    size_t length{0};
-  };
   using make_type = unique_ptr<parser>;
   static make_type make();
 

include/components/renderer.hpp

@@ -1,94 +1,71 @@
 #pragma once
 
+#include <cairo/cairo.h>
+#include <bitset>
+
+#include "cairo/fwd.hpp"
 #include "common.hpp"
 #include "components/types.hpp"
 #include "events/signal_fwd.hpp"
 #include "events/signal_receiver.hpp"
 #include "x11/extensions/fwd.hpp"
-#include "x11/fonts.hpp"
 #include "x11/types.hpp"
 
 POLYBAR_NS
 
-// fwd
+// fwd {{{
 class connection;
-class font_manager;
+class config;
 class logger;
-class signal_emitter;
+// }}}
 
-using namespace signals::parser;
 using std::map;
 
 class renderer
-    : public signal_receiver<SIGN_PRIORITY_RENDERER, change_background, change_foreground, change_underline,
+    : public signal_receiver<SIGN_PRIORITY_RENDERER, signals::parser::change_background,
-          change_overline, change_font, change_alignment, offset_pixel, attribute_set, attribute_unset,
+          signals::parser::change_foreground, signals::parser::change_underline, signals::parser::change_overline,
-          attribute_toggle, action_begin, action_end, write_text_ascii, write_text_unicode, write_text_string> {
+          signals::parser::change_font, signals::parser::change_alignment, signals::parser::offset_pixel,
+          signals::parser::attribute_set, signals::parser::attribute_unset, signals::parser::attribute_toggle,
+          signals::parser::action_begin, signals::parser::action_end, signals::parser::text> {
  public:
-  enum class gc : uint8_t { BG, FG, OL, UL, BT, BB, BL, BR };
-
   using make_type = unique_ptr<renderer>;
-  static make_type make(const bar_settings& bar, vector<string>&& fonts);
+  static make_type make(const bar_settings& bar);
 
-  explicit renderer(connection& conn, signal_emitter& emitter, const logger& logger,
+  explicit renderer(
-      unique_ptr<font_manager> font_manager, const bar_settings& bar, const vector<string>& fonts);
+      connection& conn, signal_emitter& emitter, const config&, const logger& logger, const bar_settings& bar);
   ~renderer();
 
-  renderer(const renderer& o) = delete;
-  renderer& operator=(const renderer& o) = delete;
-
   xcb_window_t window() const;
+  const vector<action_block> actions() const;
 
   void begin();
   void end();
-  void flush(bool clear);
+  void flush();
 
   void reserve_space(edge side, uint16_t w);
-
-  void set_background(const uint32_t color);
-  void set_foreground(const uint32_t color);
-  void set_underline(const uint32_t color);
-  void set_overline(const uint32_t color);
-  void set_fontindex(const uint8_t font);
-  void set_alignment(const alignment align);
-  void set_attribute(const attribute attr, const bool state);
-  void toggle_attribute(const attribute attr);
-  bool check_attribute(const attribute attr);
-
   void fill_background();
-  void fill_overline(int16_t x, uint16_t w);
+  void fill_overline(double x, double w);
-  void fill_underline(int16_t x, uint16_t w);
+  void fill_underline(double x, double w);
-  void fill_shift(const int16_t px);
+  void fill_borders();
-
+  void draw_text(const string& contents);
-  void draw_textstring(const uint16_t* text, size_t len);
-
-  void begin_action(const mousebtn btn, const string& cmd);
-  void end_action(const mousebtn btn);
-  const vector<action_block> get_actions();
 
  protected:
-  int16_t shift_content(int16_t x, const int16_t shift_x);
+  void adjust_clickable_areas(double width);
-  int16_t shift_content(const int16_t shift_x);
+  void highlight_clickable_areas();
 
-  bool on(const change_background& evt);
+  bool on(const signals::parser::change_background& evt);
-  bool on(const change_foreground& evt);
+  bool on(const signals::parser::change_foreground& evt);
-  bool on(const change_underline& evt);
+  bool on(const signals::parser::change_underline& evt);
-  bool on(const change_overline& evt);
+  bool on(const signals::parser::change_overline& evt);
-  bool on(const change_font& evt);
+  bool on(const signals::parser::change_font& evt);
-  bool on(const change_alignment& evt);
+  bool on(const signals::parser::change_alignment& evt);
-  bool on(const offset_pixel& evt);
+  bool on(const signals::parser::offset_pixel& evt);
-  bool on(const attribute_set& evt);
+  bool on(const signals::parser::attribute_set& evt);
-  bool on(const attribute_unset& evt);
+  bool on(const signals::parser::attribute_unset& evt);
-  bool on(const attribute_toggle& evt);
+  bool on(const signals::parser::attribute_toggle& evt);
-  bool on(const action_begin& evt);
+  bool on(const signals::parser::action_begin& evt);
-  bool on(const action_end& evt);
+  bool on(const signals::parser::action_end& evt);
-  bool on(const write_text_ascii& evt);
+  bool on(const signals::parser::text& evt);
-  bool on(const write_text_unicode& evt);
-  bool on(const write_text_string& evt);
-
-#ifdef DEBUG_HINTS
-  vector<xcb_window_t> m_debughints;
-  void debug_hints();
-#endif
 
  protected:
   struct reserve_area {
@@ -99,34 +76,45 @@ class renderer
  private:
   connection& m_connection;
   signal_emitter& m_sig;
+  const config& m_conf;
   const logger& m_log;
-  unique_ptr<font_manager> m_fontmanager;
-
   const bar_settings& m_bar;
 
   xcb_rectangle_t m_rect{0, 0, 0U, 0U};
-  xcb_rectangle_t m_cleared{0, 0, 0U, 0U};
   reserve_area m_cleararea{};
 
   uint8_t m_depth{32};
   xcb_window_t m_window;
   xcb_colormap_t m_colormap;
   xcb_visualtype_t* m_visual;
-  // xcb_gcontext_t m_gcontext;
+  xcb_gcontext_t m_gcontext;
   xcb_pixmap_t m_pixmap;
 
-  map<gc, xcb_gcontext_t> m_gcontexts;
-  map<alignment, xcb_pixmap_t> m_pixmaps;
   vector<action_block> m_actions;
 
   // bool m_autosize{false};
-  uint16_t m_currentx{0U};
-  alignment m_alignment{alignment::NONE};
-  map<gc, uint32_t> m_colors;
-  uint8_t m_attributes{0U};
-  uint8_t m_fontindex{0};
 
-  xcb_font_t m_gcfont{XCB_NONE};
+  unique_ptr<cairo::context> m_context;
+  unique_ptr<cairo::surface> m_surface;
+
+  cairo_operator_t m_compositing_background;
+  cairo_operator_t m_compositing_foreground;
+  cairo_operator_t m_compositing_overline;
+  cairo_operator_t m_compositing_underline;
+  cairo_operator_t m_compositing_borders;
+
+  alignment m_alignment{alignment::NONE};
+  std::bitset<2> m_attributes;
+
+  uint8_t m_fontindex;
+
+  uint32_t m_color_background;
+  uint32_t m_color_foreground;
+  uint32_t m_color_overline;
+  uint32_t m_color_underline;
+
+  double m_x{0.0};
+  double m_y{0.0};
 };
 
 POLYBAR_NS_END

include/components/types.hpp

@@ -9,9 +9,10 @@
 
 POLYBAR_NS
 
-// fwd
+// fwd {{{
 struct randr_output;
 using monitor_t = shared_ptr<randr_output>;
+// }}}
 
 struct enum_hash {
   template <typename T>
@@ -135,8 +136,9 @@ struct bar_settings {
   side_values module_margin{0U, 0U};
   edge_values strut{0U, 0U, 0U, 0U};
 
-  uint32_t background{0xFFFFFFFF};
+  uint32_t background{0xFF000000};
-  uint32_t foreground{0xFF000000};
+  uint32_t foreground{0xFFFFFFFF};
+  vector<uint32_t> background_steps;
 
   line_settings underline{};
   line_settings overline{};

include/events/signal.hpp

@@ -90,6 +90,9 @@ namespace signals {
   }
 
   namespace ui {
+    struct ready : public detail::base_signal<ready> {
+      using base_type::base_type;
+    };
     struct tick : public detail::base_signal<tick> {
       using base_type::base_type;
     };
@@ -153,13 +156,7 @@ namespace signals {
     struct action_end : public detail::value_signal<action_end, mousebtn> {
       using base_type::base_type;
     };
-    struct write_text_ascii : public detail::value_signal<write_text_ascii, uint16_t> {
+    struct text : public detail::value_signal<text, string> {
-      using base_type::base_type;
-    };
-    struct write_text_unicode : public detail::value_signal<write_text_unicode, uint16_t> {
-      using base_type::base_type;
-    };
-    struct write_text_string : public detail::value_signal<write_text_string, polybar::parser::packet> {
       using base_type::base_type;
     };
   }

include/events/signal_fwd.hpp

@@ -28,6 +28,7 @@ namespace signals {
     struct action;
   }
   namespace ui {
+    struct ready;
     struct tick;
     struct button_press;
     struct visibility_change;
@@ -51,9 +52,7 @@ namespace signals {
     struct attribute_toggle;
     struct action_begin;
     struct action_end;
-    struct write_text_ascii;
+    struct text;
-    struct write_text_unicode;
-    struct write_text_string;
   }
 }
 

include/events/types.hpp

@@ -23,6 +23,9 @@ namespace {
   inline bool operator==(uint8_t id, event_type type) {
     return id == static_cast<uint8_t>(type);
   }
+  inline bool operator!=(uint8_t id, event_type type) {
+    return !(id == static_cast<uint8_t>(type));
+  }
 
   /**
    * Create QUIT event

include/settings.hpp.cmake

@@ -41,10 +41,14 @@
 
 #cmakedefine XPP_EXTENSION_LIST @XPP_EXTENSION_LIST@
 
+#if DEBUG
 #cmakedefine DEBUG_LOGGER
-#cmakedefine DEBUG_LOGGER_TRACE
+#cmakedefine DEBUG_LOGGER_VERBOSE
 #cmakedefine DEBUG_HINTS
 #cmakedefine DEBUG_WHITESPACE
+#cmakedefine DEBUG_SHADED
+#cmakedefine DEBUG_FONTCONFIG
+#endif
 
 static const size_t EVENT_SIZE = 64;
 

include/utils/cache.hpp

@@ -13,6 +13,11 @@ class cache {
   using map_type = std::unordered_map<KeyType, std::weak_ptr<ValueType>>;
   using safe_map_type = mutex_wrapper<map_type>;
 
+  bool check(const KeyType& key) {
+    std::lock_guard<safe_map_type> guard(m_cache);
+    return m_cache.find(key) == m_cache.end();
+  }
+
   template <typename... MakeArgs>
   shared_ptr<ValueType> object(const KeyType& key, MakeArgs&&... make_args) {
     std::lock_guard<safe_map_type> guard(m_cache);
@@ -27,6 +32,4 @@ class cache {
   safe_map_type m_cache;
 };
 
-namespace cache_util {}
-
 POLYBAR_NS_END

include/utils/color.hpp

@@ -1,12 +1,15 @@
 #pragma once
 
-#include <iomanip>
-
 #include "common.hpp"
-#include "utils/string.hpp"
+#include "utils/cache.hpp"
 
 POLYBAR_NS
 
+static cache<string, uint32_t> g_cache_hex;
+static cache<uint32_t, string> g_cache_colors;
+
+struct rgba;
+
 namespace color_util {
   template <typename T = uint8_t>
   T alpha_channel(const uint32_t value) {
@@ -55,6 +58,9 @@ namespace color_util {
 
   template <typename T>
   string hex(uint32_t color) {
+    string hex;
+
+    if (!g_cache_hex.check(color)) {
       char s[12];
       size_t len = 0;
 
@@ -69,7 +75,10 @@ namespace color_util {
         len = snprintf(s, sizeof(s), "#%02x%02x%02x", r, g, b);
       }
 
-    return string{s, 0, len};
+      hex = string(s, len);
+    }
+
+    return *g_cache_hex.object(color, hex);
   }
 
   inline string parse_hex(string hex) {
@@ -107,4 +116,43 @@ namespace color_util {
   }
 }
 
+struct rgb {
+  double r;
+  double g;
+  double b;
+
+  // clang-format off
+  explicit rgb(double r, double g, double b) : r(r), g(g), b(b) {}
+  explicit rgb(uint32_t color) : rgb(
+      color_util::red_channel<uint8_t>(color_util::premultiply_alpha(color)   / 255.0),
+      color_util::green_channel<uint8_t>(color_util::premultiply_alpha(color) / 255.0),
+      color_util::blue_channel<uint8_t>(color_util::premultiply_alpha(color)  / 255.0)) {}
+  // clang-format on
+};
+
+struct rgba {
+  double r;
+  double g;
+  double b;
+  double a;
+
+  // clang-format off
+  explicit rgba(double r, double g, double b, double a) : r(r), g(g), b(b), a(a) {}
+  explicit rgba(uint32_t color) : rgba(
+      color_util::red_channel<uint8_t>(color)   / 255.0,
+      color_util::green_channel<uint8_t>(color) / 255.0,
+      color_util::blue_channel<uint8_t>(color)  / 255.0,
+      color_util::alpha_channel<uint8_t>(color) / 255.0) {}
+  // clang-format on
+
+  operator uint32_t() {
+    // clang-format off
+    return static_cast<int>(a * 255) << 24
+         | static_cast<int>(r * 255) << 16
+         | static_cast<int>(g * 255) << 8
+         | static_cast<int>(b * 255);
+    // clang-format on
+  }
+};
+
 POLYBAR_NS_END

include/utils/math.hpp

@@ -87,6 +87,10 @@ namespace math_util {
   ReturnType nearest_5(double value) {
     return static_cast<ReturnType>(static_cast<int>(value / 5.0 + 0.5) * 5.0);
   }
+
+  inline int ceil(double value, int step = 1) {
+    return static_cast<int>((value * 10 + step * 10 - 1) / (step * 10)) * step;
+  }
 }
 
 POLYBAR_NS_END

include/x11/color.hpp

@@ -1,41 +0,0 @@
-#pragma once
-
-#include <map>
-
-#include <X11/Xft/Xft.h>
-#include <unordered_map>
-
-#include "common.hpp"
-#include "utils/color.hpp"
-#include "utils/concurrency.hpp"
-
-POLYBAR_NS
-
-class color {
- public:
-  explicit color(string hex);
-
-  string source() const;
-
-  operator XRenderColor() const;
-  operator string() const;
-
-  explicit operator uint32_t();
-  operator uint32_t() const;
-
-  static const color& parse(string input, const color& fallback);
-  static const color& parse(string input);
-
- protected:
-  uint32_t m_value;
-  uint32_t m_color;
-  string m_source;
-};
-
-extern mutex_wrapper<std::unordered_map<string, color>> g_colorstore;
-
-extern const color& g_colorempty;
-extern const color& g_colorblack;
-extern const color& g_colorwhite;
-
-POLYBAR_NS_END

include/x11/fonts.hpp

@@ -1,95 +0,0 @@
-#pragma once
-
-#include <ft2build.h>
-#include FT_FREETYPE_H
-#include FT_OUTLINE_H
-#include FT_GLYPH_H
-
-#include <X11/Xft/Xft.h>
-#include <xcb/xcbext.h>
-#include <unordered_map>
-
-#include "common.hpp"
-#include "x11/color.hpp"
-#include "x11/types.hpp"
-
-POLYBAR_NS
-
-using std::map;
-using std::unordered_map;
-
-// fwd
-class connection;
-class logger;
-
-struct font_ref {
-  explicit font_ref() = default;
-  font_ref(const font_ref& o) = delete;
-  font_ref& operator=(const font_ref& o) = delete;
-  XftFont* xft{nullptr};
-  xcb_font_t ptr{XCB_NONE};
-  int offset_y{0};
-  int ascent{0};
-  int descent{0};
-  int height{0};
-  int width{0};
-  uint16_t char_max{0};
-  uint16_t char_min{0};
-  vector<xcb_charinfo_t> width_lut{};
-  unordered_map<uint16_t, wchar_t> glyph_widths{};
-
-  static struct _deleter { void operator()(font_ref* font); } deleter;
-};
-
-class font_manager {
- public:
-  using make_type = unique_ptr<font_manager>;
-  static make_type make();
-
-  explicit font_manager(connection& conn, const logger& logger);
-  ~font_manager();
-
-  font_manager(const font_manager& o) = delete;
-  font_manager& operator=(const font_manager& o) = delete;
-
-  void set_visual(Visual* v);
-
-  void cleanup();
-  bool load(const string& name, uint8_t fontindex = 0, int8_t offset_y = 0);
-  void fontindex(uint8_t index);
-  shared_ptr<font_ref> match_char(const uint16_t chr);
-  uint8_t glyph_width(const shared_ptr<font_ref>& font, const uint16_t chr);
-  void drawtext(const shared_ptr<font_ref>& font, xcb_pixmap_t pm, xcb_gcontext_t gc, int16_t x, int16_t y,
-      const uint16_t* chars, size_t num_chars);
-
-  void allocate_color(uint32_t color);
-  void allocate_color(XRenderColor color);
-
- protected:
-  bool open_xcb_font(const shared_ptr<font_ref>& font, string fontname);
-
-  uint8_t glyph_width_xft(const shared_ptr<font_ref>& font, const uint16_t chr);
-  uint8_t glyph_width_xcb(const shared_ptr<font_ref>& font, const uint16_t chr);
-
-  bool has_glyph_xft(const shared_ptr<font_ref>& font, const uint16_t chr);
-  bool has_glyph_xcb(const shared_ptr<font_ref>& font, const uint16_t chr);
-
-  void xcb_poly_text_16(xcb_drawable_t d, xcb_gcontext_t gc, int16_t x, int16_t y, uint8_t len, uint16_t* str);
-
- private:
-  connection& m_connection;
-  const logger& m_logger;
-
-  Display* m_display{nullptr};
-  Visual* m_visual{nullptr};
-  Colormap m_colormap;
-
-  map<uint8_t, shared_ptr<font_ref>> m_fonts{};
-  uint8_t m_fontindex{0};
-
-  XftDraw* m_xftdraw{nullptr};
-  XftColor m_xftcolor{};
-  bool m_xftcolor_allocated{false};
-};
-
-POLYBAR_NS_END

src/CMakeLists.txt

@@ -8,20 +8,21 @@ list(REMOVE_ITEM SOURCES ipc.cpp)
 # Locate dependencies {{{
 
 set(THREADS_PREFER_PTHREAD_FLAG ON)
-find_package(Threads REQUIRED)
-find_package(X11 REQUIRED COMPONENTS Xft Xutil)
-find_package(X11_XCB REQUIRED)
 find_package(PkgConfig)
-pkg_check_modules(FONTCONFIG REQUIRED fontconfig)
+find_package(Threads REQUIRED)
+find_package(X11_XCB REQUIRED)
+pkg_check_modules(CAIRO REQUIRED cairo-fc)
+# pkg_check_modules(PANGOCAIRO REQUIRED pangocairo)
 
 set(APP_LIBRARIES ${APP_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
-set(APP_LIBRARIES ${APP_LIBRARIES} ${X11_Xft_LIB})
+# set(APP_LIBRARIES ${APP_LIBRARIES} ${PANGOCAIRO_LIBRARIES})
-#set(APP_LIBRARIES ${APP_LIBRARIES} ${FONTCONFIG_LIBRARIES})
+set(APP_LIBRARIES ${APP_LIBRARIES} ${CAIRO_LIBRARIES})
 
-set(APP_INCLUDE_DIRS ${APP_INCLUDE_DIRS} ${FONTCONFIG_INCLUDE_DIRS})
 set(APP_INCLUDE_DIRS ${APP_INCLUDE_DIRS} ${PROJECT_SOURCE_DIR}/include)
 set(APP_INCLUDE_DIRS ${APP_INCLUDE_DIRS} ${PROJECT_SOURCE_DIR}/lib/concurrentqueue/include)
 set(APP_INCLUDE_DIRS ${APP_INCLUDE_DIRS} ${CMAKE_CURRENT_BINARY_DIR})
+# set(APP_INCLUDE_DIRS ${APP_INCLUDE_DIRS} ${PANGOCAIRO_INCLUDE_DIRS})
+set(APP_INCLUDE_DIRS ${APP_INCLUDE_DIRS} ${CAIRO_INCLUDE_DIRS})
 
 # xpp library
 set(XCB_PROTOS xproto)
@@ -147,7 +148,6 @@ target_link_libraries(${PROJECT_NAME} Threads::Threads)
 
 target_compile_options(${PROJECT_NAME} PUBLIC
   $<$<CXX_COMPILER_ID:GNU>:$<$<CONFIG:MinSizeRel>:-flto>>
-  ${X11_Xft_DEFINITIONS}
   ${X11_XCB_DEFINITIONS}
   ${XCB_DEFINITIONS})
 

src/components/bar.cpp

@@ -182,18 +182,32 @@ bar::bar(connection& conn, signal_emitter& emitter, const config& config, const
 
   const auto parse_or_throw = [&](string key, string def) {
     try {
-      return color::parse(m_conf.get(bs, key, def));
+      return color_util::parse(m_conf.get(bs, key, def));
     } catch (const exception& err) {
       throw application_error(sstream() << "Failed to set " << key << " (reason: " << err.what() << ")");
     }
   };
 
-  // Load foreground/background
+  // Load background
+  for (auto&& step : m_conf.get_list<rgba>(bs, "background", {})) {
+    m_opts.background_steps.emplace_back(step);
+  }
+
+  if (!m_opts.background_steps.empty()) {
+    m_opts.background = m_opts.background_steps[0];
+
+    if (m_conf.has(bs, "background")) {
+      m_log.warn("Ignoring `%s.background` (overridden by gradient background)", bs);
+    }
+  } else {
     m_opts.background = parse_or_throw("background", color_util::hex<uint16_t>(m_opts.background));
+  }
+
+  // Load foreground
   m_opts.foreground = parse_or_throw("foreground", color_util::hex<uint16_t>(m_opts.foreground));
 
-  // Load over-/underline color and size (warn about deprecated params if used)
+  // Load over-/underline
-  auto line_color = parse_or_throw("line-color", "#f00"s);
+  auto line_color = m_conf.get(bs, "line-color", "#f00"s);
   auto line_size = m_conf.get(bs, "line-size", 0);
 
   m_opts.overline.size = m_conf.get(bs, "overline-size", line_size);
@@ -202,8 +216,8 @@ bar::bar(connection& conn, signal_emitter& emitter, const config& config, const
   m_opts.underline.color = parse_or_throw("underline-color", line_color);
 
   // Load border settings
+  auto border_color = m_conf.get(bs, "border-color", ""s);
   auto border_size = m_conf.get(bs, "border-size", 0);
-  auto border_color = m_conf.get(bs, "border-color", "#00000000"s);
 
   m_opts.borders.emplace(edge::TOP, border_settings{});
   m_opts.borders[edge::TOP].size = m_conf.deprecated(bs, "border-top", "border-top-size", border_size);
@@ -253,8 +267,8 @@ bar::bar(connection& conn, signal_emitter& emitter, const config& config, const
     throw application_error("Resulting bar height is out of bounds (" + to_string(m_opts.size.h) + ")");
   }
 
-  m_opts.size.w = math_util::cap<int>(m_opts.size.w, 0, m_opts.monitor->w);
+  // m_opts.size.w = math_util::cap<int>(m_opts.size.w, 0, m_opts.monitor->w);
-  m_opts.size.h = math_util::cap<int>(m_opts.size.h, 0, m_opts.monitor->h);
+  // m_opts.size.h = math_util::cap<int>(m_opts.size.h, 0, m_opts.monitor->h);
 
   m_opts.center.y = m_opts.size.h;
   m_opts.center.y -= m_opts.borders[edge::BOTTOM].size;
@@ -266,41 +280,12 @@ bar::bar(connection& conn, signal_emitter& emitter, const config& config, const
   m_opts.center.x /= 2;
   m_opts.center.x += m_opts.borders[edge::LEFT].size;
 
-  m_log.trace("bar: Create renderer");
+  m_log.info("Bar geometry: %ix%i+%i+%i", m_opts.size.w, m_opts.size.h, m_opts.pos.x, m_opts.pos.y);
-  auto fonts = m_conf.get_list(m_conf.section(), "font", {});
-  m_renderer = renderer::make(m_opts, move(fonts));
 
-  m_log.trace("bar: Attaching sink to registry");
+  m_log.trace("bar: Attach X event sink");
   m_connection.attach_sink(this, SINK_PRIORITY_BAR);
 
-  m_log.info("Bar geometry: %ix%i+%i+%i", m_opts.size.w, m_opts.size.h, m_opts.pos.x, m_opts.pos.y);
+  m_log.trace("bar: Attach signal receiver");
-  m_opts.window = m_renderer->window();
-
-  // Subscribe to window enter and leave events
-  // if we should dim the window
-  if (m_opts.dimvalue != 1.0) {
-    m_connection.ensure_event_mask(m_opts.window, XCB_EVENT_MASK_ENTER_WINDOW | XCB_EVENT_MASK_LEAVE_WINDOW);
-  }
-
-  m_log.info("Bar window: %s", m_connection.id(m_opts.window));
-  restack_window();
-
-  m_log.trace("bar: Reconfigure window");
-  reconfigure_struts();
-  reconfigure_wm_hints();
-
-  m_log.trace("bar: Map window");
-  m_connection.map_window_checked(m_opts.window);
-
-  // Reconfigure window position after mapping (required by Openbox)
-  // Required by Openbox
-  reconfigure_pos();
-
-  m_log.trace("bar: Drawing empty bar");
-  m_renderer->begin();
-  m_renderer->fill_background();
-  m_renderer->end();
-
   m_sig.attach(this);
 }
 
@@ -354,8 +339,6 @@ void bar::parse(string&& data, bool force) {
     }
   }
 
-  m_renderer->fill_background();
-
   try {
     m_parser->parse(settings(), data);
   } catch (const parser_error& err) {
@@ -365,7 +348,7 @@ void bar::parse(string&& data, bool force) {
   m_renderer->end();
 
   const auto check_dblclicks = [&]() -> bool {
-    for (auto&& action : m_renderer->get_actions()) {
+    for (auto&& action : m_renderer->actions()) {
       if (static_cast<uint8_t>(action.button) >= static_cast<uint8_t>(mousebtn::DOUBLE_LEFT)) {
         return true;
       }
@@ -510,7 +493,7 @@ void bar::handle(const evt::destroy_notify& evt) {
  * _NET_WM_WINDOW_OPACITY atom value
  */
 void bar::handle(const evt::enter_notify&) {
-#if DEBUG
+#ifdef DEBUG_SHADED
   if (m_opts.origin == edge::TOP) {
     m_taskqueue->defer_unique("window-hover", 25ms, [&](size_t) { m_sig.emit(signals::ui::unshade_window{}); });
     return;
@@ -534,7 +517,7 @@ void bar::handle(const evt::enter_notify&) {
  * _NET_WM_WINDOW_OPACITY atom value
  */
 void bar::handle(const evt::leave_notify&) {
-#if DEBUG
+#ifdef DEBUG_SHADED
   if (m_opts.origin == edge::TOP) {
     m_taskqueue->defer_unique("window-hover", 25ms, [&](size_t) { m_sig.emit(signals::ui::shade_window{}); });
     return;
@@ -571,7 +554,7 @@ void bar::handle(const evt::button_press& evt) {
   m_buttonpress_pos = evt->event_x;
 
   const auto deferred_fn = [&](size_t) {
-    for (auto&& action : m_renderer->get_actions()) {
+    for (auto&& action : m_renderer->actions()) {
       if (action.button == m_buttonpress_btn && !action.active && action.test(m_buttonpress_pos)) {
         m_log.trace("Found matching input area");
         m_sig.emit(button_press{string{action.command}});
@@ -626,7 +609,7 @@ void bar::handle(const evt::expose& evt) {
     }
 
     m_log.trace("bar: Received expose event");
-    m_renderer->flush(false);
+    m_renderer->flush();
   }
 }
 
@@ -643,7 +626,7 @@ void bar::handle(const evt::expose& evt) {
  * pseudo-transparent background when it changes
  */
 void bar::handle(const evt::property_notify& evt) {
-#ifdef DEBUG_LOGGER_TRACE
+#ifdef DEBUG_LOGGER_VERBOSE
   string atom_name = m_connection.get_atom_name(evt->atom).name();
   m_log.trace_x("bar: property_notify(%s)", atom_name);
 #endif
@@ -654,9 +637,42 @@ void bar::handle(const evt::property_notify& evt) {
 }
 
 bool bar::on(const signals::eventqueue::start&) {
+  m_log.trace("bar: Create renderer");
+  m_renderer = renderer::make(m_opts);
+  m_opts.window = m_renderer->window();
+
+  // Subscribe to window enter and leave events
+  // if we should dim the window
+  if (m_opts.dimvalue != 1.0) {
+    m_connection.ensure_event_mask(m_opts.window, XCB_EVENT_MASK_ENTER_WINDOW | XCB_EVENT_MASK_LEAVE_WINDOW);
+  }
+
+  m_log.info("Bar window: %s", m_connection.id(m_opts.window));
+  restack_window();
+
+  m_log.trace("bar: Reconfigure window");
+  reconfigure_struts();
+  reconfigure_wm_hints();
+
+  m_log.trace("bar: Map window");
+  m_connection.map_window_checked(m_opts.window);
+
+  // Reconfigure window position after mapping (required by Openbox)
+  // Required by Openbox
+  reconfigure_pos();
+
+  m_log.trace("bar: Draw empty bar");
+  m_renderer->begin();
+  m_renderer->end();
+
+  m_sig.emit(signals::ui::ready{});
+
+  // TODO: tray manager could run this internally on ready event
   m_log.trace("bar: Setup tray manager");
   m_tray->setup(static_cast<const bar_settings&>(m_opts));
+
   broadcast_visibility();
+
   return true;
 }
 
@@ -677,7 +693,7 @@ bool bar::on(const signals::ui::unshade_window&) {
           m_sig.emit(signals::ui::tick{});
         }
         if (!remaining) {
-          m_renderer->flush(false);
+          m_renderer->flush();
         }
         if (m_opts.dimmed) {
           m_opts.dimmed = false;
@@ -716,7 +732,7 @@ bool bar::on(const signals::ui::shade_window&) {
           m_sig.emit(signals::ui::tick{});
         }
         if (!remaining) {
-          m_renderer->flush(false);
+          m_renderer->flush();
         }
         if (!m_opts.dimmed) {
           m_opts.dimmed = true;

src/components/config.cpp

@@ -2,13 +2,12 @@
 #include <fstream>
 
 #include "components/config.hpp"
+#include "utils/color.hpp"
 #include "utils/env.hpp"
 #include "utils/factory.hpp"
 #include "utils/file.hpp"
 #include "utils/math.hpp"
 #include "utils/string.hpp"
-#include "x11/color.hpp"
-#include "x11/xresources.hpp"
 
 POLYBAR_NS
 
@@ -276,8 +275,15 @@ chrono::duration<double> config::convert(string&& value) const {
 }
 
 template <>
-color config::convert(string&& value) const {
+rgba config::convert(string&& value) const {
-  return color{forward<string>(value)};
+  auto color = color_util::parse(value, 0);
+  // clang-format off
+  return rgba{
+      color_util::red_channel<uint8_t>(color) / 255.0,
+      color_util::green_channel<uint8_t>(color) / 255.0,
+      color_util::blue_channel<uint8_t>(color) / 255.0,
+      color_util::alpha_channel<uint8_t>(color) / 255.0};
+  // clang-format on
 }
 
 POLYBAR_NS_END

src/components/controller.cpp

@@ -148,11 +148,8 @@ controller::~controller() {
  */
 bool controller::run(bool writeback) {
   m_log.info("Starting application");
-
   assert(!m_connection.connection_has_error());
-
   m_writeback = writeback;
-
   m_sig.attach(this);
 
   size_t started_modules{0};
@@ -183,10 +180,7 @@ bool controller::run(bool writeback) {
     throw application_error("No modules started");
   }
 
-  m_sig.emit(signals::eventqueue::start{});
-
   m_connection.flush();
-
   m_event_thread = thread(&controller::process_eventqueue, this);
 
   read_events();
@@ -205,6 +199,9 @@ bool controller::run(bool writeback) {
  * Enqueue event
  */
 bool controller::enqueue(event&& evt) {
+  if (!m_process_events && evt.type != event_type::QUIT) {
+    return false;
+  }
   if (!m_queue.enqueue(forward<decltype(evt)>(evt))) {
     m_log.warn("Failed to enqueue event");
     return false;
@@ -330,8 +327,7 @@ void controller::read_events() {
  */
 void controller::process_eventqueue() {
   m_log.info("Eventqueue worker (thread-id=%lu)", this_thread::get_id());
-
+  m_sig.emit(signals::eventqueue::start{});
-  enqueue(make_update_evt(true));
 
   while (!g_terminate) {
     event evt{};
@@ -556,6 +552,16 @@ bool controller::on(const signals::eventqueue::check_state&) {
   return true;
 }
 
+/**
+ * Process ui ready event
+ */
+bool controller::on(const signals::ui::ready&) {
+  m_process_events = true;
+  enqueue(make_update_evt(true));
+  // let the event bubble
+  return false;
+}
+
 /**
  * Process ui button press event
  */

src/components/logger.cpp

@@ -2,6 +2,7 @@
 
 #include "components/logger.hpp"
 #include "errors.hpp"
+#include "settings.hpp"
 #include "utils/concurrency.hpp"
 #include "utils/factory.hpp"
 #include "utils/string.hpp"
@@ -60,9 +61,9 @@ logger::logger(loglevel level) : m_level(level) {
  * Set output verbosity
  */
 void logger::verbosity(loglevel&& level) {
-#ifndef DEBUG
+#ifndef DEBUG_LOGGER
   if (level == loglevel::TRACE) {
-    throw application_error("Trace logging is only enabled for debug builds...");
+    throw application_error("Trace logging is not enabled...");
   }
 #endif
   m_level = forward<decltype(level)>(level);

src/components/parser.cpp

@@ -173,60 +173,8 @@ size_t parser::text(string&& data) {
   }
 #endif
 
-  const uint8_t* utf{reinterpret_cast<const uint8_t*>(&data[0])};
+  m_sig.emit(signals::parser::text{forward<string>(data)});
-
+  return data.size();
-  // clang-format off
-  if (utf[0] < 0x80) {
-    size_t pos{0};
-
-    // grab consecutive ascii chars
-    while (utf[pos] && utf[pos] < 0x80) {
-      packet pkt{};
-      size_t limit{memory_util::countof(pkt.data)};
-      size_t len{0};
-
-      while (len + 1 < limit && utf[pos] && utf[pos] < 0x80) {
-        pkt.data[len++] = utf[pos++];
-      }
-
-      if (!len) {
-        break;
-      }
-
-      pkt.length = len;
-      m_sig.emit(write_text_string{move(pkt)});
-    }
-
-    if (pos > 0) {
-      return pos;
-    }
-
-  } else if ((utf[0] & 0xe0) == 0xc0) {  // 2 byte utf-8 sequence
-    m_sig.emit(write_text_unicode{static_cast<uint16_t>(((utf[0] & 0x1f) << 6) | (utf[1] & 0x3f))});
-    return 2;
-  } else if ((utf[0] & 0xf0) == 0xe0) {  // 3 byte utf-8 sequence
-    m_sig.emit(write_text_unicode{static_cast<uint16_t>(((utf[0] & 0x0f) << 12) | ((utf[1] & 0x3f) << 6) | (utf[2] & 0x3f))});
-    return 3;
-  } else if ((utf[0] & 0xf8) == 0xf0) {  // 4 byte utf-8 sequence
-    // m_sig.emit(write_text_unicode{((utf[0] & 0x07) << 18) | ((utf[1] & 0x3f) << 12) | ((utf[2] & 0x3f) << 6) | (utf[3] & 0x3f)});
-    m_sig.emit(write_text_unicode{static_cast<uint16_t>(0xfffd)});
-    return 4;
-  } else if ((utf[0] & 0xfc) == 0xf8) {  // 5 byte utf-8 sequence
-    // m_sig.emit(write_text_unicode{((utf[0] & 0x03) << 24) | ((utf[1] & 0x3f) << 18) | ((utf[2] & 0x3f) << 12) | ((utf[3] & 0x3f) << 6) | (utf[4] & 0x3f)});
-    m_sig.emit(write_text_unicode{static_cast<uint16_t>(0xfffd)});
-    return 5;
-  } else if ((utf[0] & 0xfe) == 0xfc) {  // 6 byte utf-8 sequence
-    // m_sig.emit(write_text_unicode{((utf[0] & 0x01) << 30) | ((utf[1] & 0x3f) << 24) | ((utf[2] & 0x3f) << 18) | ((utf[3] & 0x3f) << 12) | ((utf[4] & 0x3f) << 6) | (utf[5] & 0x3f)});
-    m_sig.emit(write_text_unicode{static_cast<uint16_t>(0xfffd)});
-    return 6;
-  }
-  // clang-format on
-
-  if (utf[0] < 0x80) {
-    m_sig.emit(write_text_ascii{utf[0]});
-  }
-
-  return 1;
 }
 
 /**

src/components/renderer.cpp

@@ -1,11 +1,19 @@
 #include "components/renderer.hpp"
+#include "cairo/context.hpp"
+#include "cairo/font.hpp"
+#include "cairo/surface.hpp"
+#include "cairo/types.hpp"
+#include "cairo/utils.hpp"
+#include "components/config.hpp"
 #include "components/logger.hpp"
 #include "errors.hpp"
 #include "events/signal.hpp"
-#include "events/signal_emitter.hpp"
 #include "events/signal_receiver.hpp"
+#include "utils/color.hpp"
 #include "utils/factory.hpp"
 #include "utils/file.hpp"
+#include "utils/math.hpp"
+#include "utils/string.hpp"
 #include "x11/atoms.hpp"
 #include "x11/connection.hpp"
 #include "x11/draw.hpp"
@@ -18,53 +26,50 @@ POLYBAR_NS
 /**
  * Create instance
  */
-renderer::make_type renderer::make(const bar_settings& bar, vector<string>&& fonts) {
+renderer::make_type renderer::make(const bar_settings& bar) {
   // clang-format off
   return factory_util::unique<renderer>(
       connection::make(),
       signal_emitter::make(),
+      config::make(),
       logger::make(),
-      font_manager::make(),
+      forward<decltype(bar)>(bar));
-      forward<decltype(bar)>(bar),
-      forward<decltype(fonts)>(fonts));
   // clang-format on
 }
 
 /**
  * Construct renderer instance
  */
-renderer::renderer(connection& conn, signal_emitter& emitter, const logger& logger,
+renderer::renderer(
-    unique_ptr<font_manager> font_manager, const bar_settings& bar, const vector<string>& fonts)
+    connection& conn, signal_emitter& sig, const config& conf, const logger& logger, const bar_settings& bar)
     : m_connection(conn)
-    , m_sig(emitter)
+    , m_sig(sig)
+    , m_conf(conf)
     , m_log(logger)
-    , m_fontmanager(forward<decltype(font_manager)>(font_manager))
     , m_bar(forward<const bar_settings&>(bar))
     , m_rect(m_bar.inner_area()) {
   m_sig.attach(this);
-
   m_log.trace("renderer: Get TrueColor visual");
-
+  {
     if ((m_visual = m_connection.visual_type(m_connection.screen(), 32)) == nullptr) {
       m_log.err("No 32-bit TrueColor visual found...");
 
       if ((m_visual = m_connection.visual_type(m_connection.screen(), 24)) == nullptr) {
-      m_log.err("No 24-bit TrueColor visual found, aborting...");
+        m_log.err("No 24-bit TrueColor visual found...");
-      throw application_error("No matching TrueColor visual found...");
+      } else {
-    }
-
-    if (m_visual == nullptr) {
-      throw application_error("No matching TrueColor visual found...");
-    }
-
         m_depth = 24;
-
+      }
-    m_fontmanager->set_visual(m_connection.visual(m_depth));
+    }
+    if (m_visual == nullptr) {
+      throw application_error("No matching TrueColor");
+    }
   }
 
   m_log.trace("renderer: Allocate colormap");
+  {
     m_colormap = m_connection.generate_id();
     m_connection.create_colormap(XCB_COLORMAP_ALLOC_NONE, m_colormap, m_connection.screen()->root, m_visual->visual_id);
+  }
 
   m_log.trace("renderer: Allocate output window");
   {
@@ -88,73 +93,61 @@ renderer::renderer(connection& conn, signal_emitter& emitter, const logger& logg
   }
 
   m_log.trace("renderer: Allocate window pixmap");
-  m_pixmap = m_connection.generate_id();
-  m_connection.create_pixmap(m_depth, m_pixmap, m_window, m_rect.width, m_rect.height);
-
-  m_log.trace("renderer: Allocate graphic contexts");
   {
-    // clang-format off
+    m_pixmap = m_connection.generate_id();
-    vector<uint32_t> colors {
+    m_connection.create_pixmap(m_depth, m_pixmap, m_window, m_bar.size.w, m_bar.size.h);
-      m_bar.background,
+  }
-      m_bar.foreground,
-      m_bar.overline.color,
-      m_bar.underline.color,
-      m_bar.borders.at(edge::TOP).color,
-      m_bar.borders.at(edge::BOTTOM).color,
-      m_bar.borders.at(edge::LEFT).color,
-      m_bar.borders.at(edge::RIGHT).color,
-    };
-    // clang-format on
 
-    for (int i = 0; i < 8; i++) {
+  m_log.trace("renderer: Allocate graphic context");
+  {
     uint32_t mask{0};
     uint32_t value_list[32]{0};
-
     xcb_params_gc_t params{};
-      XCB_AUX_ADD_PARAM(&mask, &params, foreground, colors[i]);
+    XCB_AUX_ADD_PARAM(&mask, &params, foreground, m_bar.foreground);
     XCB_AUX_ADD_PARAM(&mask, &params, graphics_exposures, 0);
     connection::pack_values(mask, &params, value_list);
-
+    m_gcontext = m_connection.generate_id();
-      m_colors.emplace(gc(i), colors[i]);
+    m_connection.create_gc(m_gcontext, m_pixmap, mask, value_list);
-      m_gcontexts.emplace(gc(i), m_connection.generate_id());
-      m_connection.create_gc(m_gcontexts.at(gc(i)), m_pixmap, mask, value_list);
   }
+
+  m_log.trace("renderer: Allocate cairo components");
+  {
+    m_surface = make_unique<cairo::xcb_surface>(m_connection, m_pixmap, m_visual, m_bar.size.w, m_bar.size.h);
+    m_context = make_unique<cairo::context>(*m_surface.get(), m_log);
   }
 
   m_log.trace("renderer: Load fonts");
   {
-    auto fonts_loaded = false;
+    auto fonts = m_conf.get_list<string>(m_conf.section(), "font", {});
-    auto fontindex = 0;
-
     if (fonts.empty()) {
       m_log.warn("No fonts specified, using fallback font \"fixed\"");
+      fonts.emplace_back("fixed");
     }
 
+    auto fonts_loaded = false;
     for (const auto& f : fonts) {
-      fontindex++;
       vector<string> fd{string_util::split(f, ';')};
-      string pattern{fd[0]};
+      auto font = cairo::make_font(*m_context, string(fd[0]), fd.size() > 1 ? std::atoi(fd[1].c_str()) : 0);
-      int offset{0};
+      m_log.info("Loaded font \"%s\" (name=%s, file=%s)", fd[0], font->name(), font->file());
-
+      *m_context << move(font);
-      if (fd.size() > 1) {
-        offset = std::stoi(fd[1], nullptr, 10);
-      }
-
-      if (m_fontmanager->load(pattern, fontindex, offset)) {
       fonts_loaded = true;
-      } else {
-        m_log.warn("Unable to load font '%s'", fd[0]);
-      }
     }
 
-    if (!fonts_loaded && !fonts.empty()) {
+    if (!fonts_loaded) {
-      m_log.warn("Unable to load fonts, using fallback font \"fixed\"");
-    }
-    if (!fonts_loaded && !m_fontmanager->load("fixed")) {
       throw application_error("Unable to load fonts");
     }
-    m_fontmanager->allocate_color(m_bar.foreground);
   }
+
+  m_compositing_background =
+      cairo::utils::str2operator(m_conf.get("settings", "compositing-background", ""s), CAIRO_OPERATOR_SOURCE);
+  m_compositing_foreground =
+      cairo::utils::str2operator(m_conf.get("settings", "compositing-foreground", ""s), CAIRO_OPERATOR_OVER);
+  m_compositing_overline =
+      cairo::utils::str2operator(m_conf.get("settings", "compositing-overline", ""s), CAIRO_OPERATOR_OVER);
+  m_compositing_underline =
+      cairo::utils::str2operator(m_conf.get("settings", "compositing-underline", ""s), CAIRO_OPERATOR_OVER);
+  m_compositing_borders =
+      cairo::utils::str2operator(m_conf.get("settings", "compositing-border", ""s), CAIRO_OPERATOR_SOURCE);
 }
 
 /**
@@ -162,10 +155,6 @@ renderer::renderer(connection& conn, signal_emitter& emitter, const logger& logg
  */
 renderer::~renderer() {
   m_sig.detach(this);
-
-  if (m_window != XCB_NONE) {
-    m_connection.destroy_window(m_window);
-  }
 }
 
 /**
@@ -175,17 +164,51 @@ xcb_window_t renderer::window() const {
   return m_window;
 }
 
+/**
+ * Get completed action blocks
+ */
+const vector<action_block> renderer::actions() const {
+  return m_actions;
+}
+
 /**
  * Begin render routine
  */
 void renderer::begin() {
   m_log.trace_x("renderer: begin");
 
-  m_rect = m_bar.inner_area();
+  // Reset state
-  m_alignment = alignment::NONE;
-  m_currentx = 0;
-  m_attributes = 0;
   m_actions.clear();
+  m_attributes.reset();
+  m_alignment = alignment::NONE;
+  m_rect = m_bar.inner_area();
+  m_x = 0.0;
+
+  // Reset colors
+  m_color_background = 0;
+  m_color_foreground = m_bar.foreground;
+  m_color_underline = m_bar.underline.color;
+  m_color_overline = m_bar.overline.color;
+
+  // Clear canvas
+  m_context->save();
+  *m_context << CAIRO_OPERATOR_SOURCE;
+  *m_context << rgba{0.0, 0.0, 0.0, 0.0};
+  m_context->paint();
+  m_context->restore();
+
+  m_context->save();
+
+  fill_background();
+  fill_borders();
+
+  // clang-format off
+  m_context->clip(cairo::rect{
+    static_cast<double>(m_rect.x),
+    static_cast<double>(m_rect.y),
+    static_cast<double>(m_rect.width),
+    static_cast<double>(m_rect.height)});
+  // clang-format on
 }
 
 /**
@@ -194,101 +217,39 @@ void renderer::begin() {
 void renderer::end() {
   m_log.trace_x("renderer: end");
 
-  m_fontmanager->cleanup();
+  highlight_clickable_areas();
 
-#ifdef DEBUG_HINTS
+  m_context->restore();
-  debug_hints();
+  m_surface->flush();
-#endif
 
-  flush(false);
+  flush();
 }
 
 /**
  * Flush pixmap contents onto the target window
  */
-void renderer::flush(bool clear) {
+void renderer::flush() {
-  const xcb_rectangle_t& r = m_rect;
+  m_log.trace_x("renderer: flush");
 
-  xcb_rectangle_t top{0, 0, 0U, 0U};
+#ifdef DEBUG_SHADED
-  top.x += m_bar.borders.at(edge::LEFT).size;
-  top.width += m_bar.size.w - m_bar.borders.at(edge::LEFT).size - m_bar.borders.at(edge::RIGHT).size;
-  top.height += m_bar.borders.at(edge::TOP).size;
-
-  xcb_rectangle_t bottom{0, 0, 0U, 0U};
-  bottom.x += m_bar.borders.at(edge::LEFT).size;
-  bottom.y += m_bar.size.h - m_bar.borders.at(edge::BOTTOM).size;
-  bottom.width += m_bar.size.w - m_bar.borders.at(edge::LEFT).size - m_bar.borders.at(edge::RIGHT).size;
-  bottom.height += m_bar.borders.at(edge::BOTTOM).size;
-
-  xcb_rectangle_t left{0, 0, 0U, 0U};
-  left.width += m_bar.borders.at(edge::LEFT).size;
-  left.height += m_bar.size.h;
-
-  xcb_rectangle_t right{0, 0, 0U, 0U};
-  right.x += m_bar.size.w - m_bar.borders.at(edge::RIGHT).size;
-  right.width += m_bar.borders.at(edge::RIGHT).size;
-  right.height += m_bar.size.h;
-
-  // Calculate the area that was reserved so that we
-  // can clear any previous content drawn at the same location
-  xcb_rectangle_t clear_area{r.x, r.y, r.width, r.height};
-
-  if (m_cleararea.size && m_cleararea.side == edge::RIGHT) {
-    clear_area.x += r.width;
-    clear_area.y = top.height;
-    clear_area.width = m_cleararea.size;
-  } else if (m_cleararea.size && m_cleararea.side == edge::LEFT) {
-    clear_area.x = left.width;
-    clear_area.y = top.height;
-    clear_area.width = m_cleararea.size;
-  } else if (m_cleararea.size && m_cleararea.side == edge::TOP) {
-    clear_area.height = m_cleararea.size;
-  } else if (m_cleararea.size && m_cleararea.side == edge::BOTTOM) {
-    clear_area.y += r.height - m_cleararea.size;
-    clear_area.height = m_cleararea.size;
-  }
-
-  if (clear_area != m_cleared && clear_area != 0) {
-    m_log.trace("renderer: clearing area %dx%d+%d+%d", clear_area.width, clear_area.height, clear_area.x, clear_area.y);
-    m_connection.clear_area(0, m_window, clear_area.x, clear_area.y, clear_area.width, clear_area.height);
-    m_cleared = clear_area;
-  }
-
-#if DEBUG
   if (m_bar.shaded && m_bar.origin == edge::TOP) {
-    m_log.trace("renderer: copy pixmap (shaded=1, clear=%i, geom=%dx%d+%d+%d)", clear, r.width, r.height, r.x, r.y);
+    m_log.trace_x(
+        "renderer: copy pixmap (shaded=1, geom=%dx%d+%d+%d)", m_rect.width, m_rect.height, m_rect.x, m_rect.y);
     auto geom = m_connection.get_geometry(m_window);
     auto x1 = 0;
-    auto y1 = r.height - m_bar.shade_size.h - r.y - geom->height;
+    auto y1 = m_rect.height - m_bar.shade_size.h - m_rect.y - geom->height;
-    auto x2 = r.x;
+    auto x2 = m_rect.x;
-    auto y2 = r.y;
+    auto y2 = m_rect.y;
-    auto w = r.width;
+    auto w = m_rect.width;
-    auto h = r.height - m_bar.shade_size.h + geom->height;
+    auto h = m_rect.height - m_bar.shade_size.h + geom->height;
-    m_connection.copy_area(m_pixmap, m_window, m_gcontexts.at(gc::FG), x1, y1, x2, y2, w, h);
+    m_connection.copy_area(m_pixmap, m_window, m_gcontext, x1, y1, x2, y2, w, h);
     m_connection.flush();
     return;
   }
 #endif
 
-  m_log.trace("renderer: copy pixmap (clear=%i, geom=%dx%d+%d+%d)", clear, r.width, r.height, r.x, r.y);
+  m_log.trace_x("renderer: copy pixmap (geom=%dx%d+%d+%d)", m_rect.width, m_rect.height, m_rect.x, m_rect.y);
-  m_connection.copy_area(m_pixmap, m_window, m_gcontexts.at(gc::FG), 0, 0, r.x, r.y, r.width, r.height);
+  m_connection.copy_area(m_pixmap, m_window, m_gcontext, 0, 0, 0, 0, m_bar.size.w, m_bar.size.h);
-
-  m_log.trace_x("renderer: draw top border (%lupx, %08x)", top.height, m_bar.borders.at(edge::TOP).color);
-  draw_util::fill(m_connection, m_window, m_gcontexts.at(gc::BT), top);
-
-  m_log.trace_x("renderer: draw bottom border (%lupx, %08x)", bottom.height, m_bar.borders.at(edge::BOTTOM).color);
-  draw_util::fill(m_connection, m_window, m_gcontexts.at(gc::BB), bottom);
-
-  m_log.trace_x("renderer: draw left border (%lupx, %08x)", left.width, m_bar.borders.at(edge::LEFT).color);
-  draw_util::fill(m_connection, m_window, m_gcontexts.at(gc::BL), left);
-
-  m_log.trace_x("renderer: draw right border (%lupx, %08x)", right.width, m_bar.borders.at(edge::RIGHT).color);
-  draw_util::fill(m_connection, m_window, m_gcontexts.at(gc::BR), right);
-
-  if (clear) {
-    m_connection.clear_area(false, m_pixmap, 0, 0, r.width, r.height);
-  }
-
   m_connection.flush();
 }
 
@@ -327,391 +288,296 @@ void renderer::reserve_space(edge side, uint16_t w) {
   }
 }
 
-/**
- * Check if given attribute is enabled
- */
-bool renderer::check_attribute(const attribute attr) {
-  return (m_attributes >> static_cast<uint8_t>(attr)) & 1U;
-}
-
 /**
  * Fill background color
  */
 void renderer::fill_background() {
-  m_log.trace_x("renderer: fill_background");
+  m_context->save();
-  draw_util::fill(m_connection, m_pixmap, m_gcontexts.at(gc::BG), 0, 0, m_rect.width, m_rect.height);
+  *m_context << m_compositing_background;
+
+  if (!m_bar.background_steps.empty()) {
+    m_log.trace_x("renderer: gradient background (steps=%lu)", m_bar.background_steps.size());
+    *m_context << cairo::linear_gradient{0.0, 0.0 + m_rect.y, 0.0, 0.0 + m_rect.height, m_bar.background_steps};
+  } else {
+    m_log.trace_x("renderer: solid background #%08x", m_bar.background);
+    *m_context << m_bar.background;
+  }
+
+  m_context->paint();
+  m_context->restore();
 }
 
 /**
  * Fill overline color
  */
-void renderer::fill_overline(int16_t x, uint16_t w) {
+void renderer::fill_overline(double x, double w) {
-  if (!check_attribute(attribute::OVERLINE)) {
+  if (m_bar.overline.size && m_attributes.test(static_cast<uint8_t>(attribute::OVERLINE))) {
-    return m_log.trace_x("renderer: not filling overline (flag unset)");
+    m_log.trace_x("renderer: overline(x=%i, w=%i)", x, w);
-  } else if (!m_bar.overline.size) {
+    m_context->save();
-    return m_log.trace_x("renderer: not filling overline (size=0)");
+    *m_context << m_compositing_overline;
+    *m_context << m_color_overline;
+    *m_context << cairo::rect{x, static_cast<double>(m_rect.y), w, static_cast<double>(m_bar.overline.size)};
+    m_context->fill();
+    m_context->restore();
   }
-  m_log.trace_x("renderer: fill_overline(%i, #%08x)", m_bar.overline.size, m_colors[gc::OL]);
-  draw_util::fill(m_connection, m_pixmap, m_gcontexts.at(gc::OL), x, 0, w, m_bar.overline.size);
 }
 
 /**
  * Fill underline color
  */
-void renderer::fill_underline(int16_t x, uint16_t w) {
+void renderer::fill_underline(double x, double w) {
-  if (!check_attribute(attribute::UNDERLINE)) {
+  if (m_bar.underline.size && m_attributes.test(static_cast<uint8_t>(attribute::UNDERLINE))) {
-    return m_log.trace_x("renderer: not filling underline (flag unset)");
+    m_log.trace_x("renderer: underline(x=%i, w=%i)", x, w);
-  } else if (!m_bar.underline.size) {
+    m_context->save();
-    return m_log.trace_x("renderer: not filling underline (size=0)");
+    *m_context << m_compositing_underline;
-  }
+    *m_context << m_color_underline;
-  m_log.trace_x("renderer: fill_underline(%i, #%08x)", m_bar.underline.size, m_colors[gc::UL]);
+    *m_context << cairo::rect{x, static_cast<double>(m_rect.y + m_rect.height - m_bar.underline.size), w,
-  int16_t y{static_cast<int16_t>(m_rect.height - m_bar.underline.size)};
+        static_cast<double>(m_bar.underline.size)};
-  draw_util::fill(m_connection, m_pixmap, m_gcontexts.at(gc::UL), x, y, w, m_bar.underline.size);
+    m_context->fill();
-}
+    m_context->restore();
-
-/**
- * @see shift_content
- */
-void renderer::fill_shift(const int16_t px) {
-  shift_content(px);
-}
-
-/**
- * Draw consecutive character glyphs
- */
-void renderer::draw_textstring(const uint16_t* text, size_t len) {
-  m_log.trace_x("renderer: draw_textstring(\"%s\")", text);
-
-  for (size_t n = 0; n < len; n++) {
-    vector<uint16_t> chars{text[n]};
-    shared_ptr<font_ref> font{m_fontmanager->match_char(chars[0])};
-    uint8_t width{static_cast<const uint8_t>(m_fontmanager->glyph_width(font, chars[0]) * chars.size())};
-
-    if (!font) {
-      m_log.warn("Could not find glyph for %i", chars[0]);
-      continue;
-    } else if (!width) {
-      m_log.warn("Could not determine glyph width for %i", chars[0]);
-      continue;
-    }
-
-    while (n + 1 < len && text[n + 1] == chars[0]) {
-      chars.emplace_back(text[n++]);
-    }
-
-    width *= chars.size();
-    auto x = shift_content(width);
-    auto y = m_rect.height / 2 + font->height / 2 - font->descent + font->offset_y;
-
-    if (font->ptr != XCB_NONE && m_gcfont != font->ptr) {
-      const uint32_t v[1]{font->ptr};
-      m_connection.change_gc(m_gcontexts.at(gc::FG), XCB_GC_FONT, v);
-      m_gcfont = font->ptr;
-    }
-
-    m_fontmanager->drawtext(font, m_pixmap, m_gcontexts.at(gc::FG), x, y, chars.data(), chars.size());
-
-    fill_underline(x, width);
-    fill_overline(x, width);
   }
 }
 
 /**
- * Get completed action blocks
+ * Fill border colors
  */
-const vector<action_block> renderer::get_actions() {
+void renderer::fill_borders() {
-  return m_actions;
+  m_context->save();
+  *m_context << m_compositing_borders;
+
+  cairo::rect top{0.0, 0.0, 0.0, 0.0};
+  top.x += m_bar.borders.at(edge::LEFT).size;
+  top.w += m_bar.size.w - m_bar.borders.at(edge::LEFT).size - m_bar.borders.at(edge::TOP).size;
+  top.h += m_bar.borders.at(edge::TOP).size;
+  m_log.trace_x("renderer: border T(%.0f, #%08x)", top.h, m_bar.borders.at(edge::TOP).color);
+  (*m_context << top << m_bar.borders.at(edge::TOP).color).fill();
+
+  cairo::rect bottom{0.0, 0.0, 0.0, 0.0};
+  bottom.x += m_bar.borders.at(edge::LEFT).size;
+  bottom.y += m_bar.size.h - m_bar.borders.at(edge::BOTTOM).size;
+  bottom.w += m_bar.size.w - m_bar.borders.at(edge::LEFT).size - m_bar.borders.at(edge::RIGHT).size;
+  bottom.h += m_bar.borders.at(edge::BOTTOM).size;
+  m_log.trace_x("renderer: border B(%.0f, #%08x)", bottom.h, m_bar.borders.at(edge::BOTTOM).color);
+  (*m_context << bottom << m_bar.borders.at(edge::BOTTOM).color).fill();
+
+  cairo::rect left{0.0, 0.0, 0.0, 0.0};
+  left.w += m_bar.borders.at(edge::LEFT).size;
+  left.h += m_bar.size.h;
+  m_log.trace_x("renderer: border L(%.0f, #%08x)", left.w, m_bar.borders.at(edge::LEFT).color);
+  (*m_context << left << m_bar.borders.at(edge::LEFT).color).fill();
+
+  cairo::rect right{0.0, 0.0, 0.0, 0.0};
+  right.x += m_bar.size.w - m_bar.borders.at(edge::RIGHT).size;
+  right.w += m_bar.borders.at(edge::RIGHT).size;
+  right.h += m_bar.size.h;
+  m_log.trace_x("renderer: border R(%.0f, #%08x)", right.w, m_bar.borders.at(edge::RIGHT).color);
+  (*m_context << right << m_bar.borders.at(edge::RIGHT).color).fill();
+
+  m_context->restore();
 }
 
 /**
- * Shift pixmap content by given value
+ * Draw text contents
  */
-int16_t renderer::shift_content(int16_t x, const int16_t shift_x) {
+void renderer::draw_text(const string& contents) {
-  if (x > m_rect.width) {
+  m_log.trace_x("renderer: text(%s)", contents.c_str());
-    return m_rect.width;
+
-  } else if (x < 0) {
+  cairo_text_extents_t extents;
-    return 0;
+  cairo_text_extents(*m_context, contents.c_str(), &extents);
+
+  if (!extents.width) {
+    return;
   }
 
-  m_log.trace_x("renderer: shift_content(%i)", shift_x);
+  cairo::abspos origin{static_cast<double>(m_rect.x), static_cast<double>(m_rect.y)};
 
-  int16_t base_x{0};
+  if (m_alignment == alignment::CENTER) {
-  double delta{0.0};
+    origin.x += m_rect.width / 2.0 - extents.width / 2.0;
-
+    adjust_clickable_areas(extents.width / 2.0);
-  switch (m_alignment) {
+  } else if (m_alignment == alignment::RIGHT) {
-    case alignment::NONE:
+    origin.x += m_rect.width - extents.width;
-      break;
+    adjust_clickable_areas(extents.width);
-    case alignment::LEFT:
+  } else {
-      break;
+    origin.x += m_x;
-    case alignment::CENTER:
-      base_x = static_cast<int16_t>(m_rect.width / 2);
-      m_connection.copy_area(m_pixmap, m_pixmap, m_gcontexts.at(gc::FG), base_x - x / 2, 0, base_x - (x + shift_x) / 2,
-          0, x, m_rect.height);
-      x = base_x - (x + shift_x) / 2 + x;
-      delta = static_cast<double>(shift_x) / 2;
-      break;
-    case alignment::RIGHT:
-      base_x = static_cast<int16_t>(m_rect.width - x);
-      m_connection.copy_area(
-          m_pixmap, m_pixmap, m_gcontexts.at(gc::FG), base_x, 0, base_x - shift_x, 0, x, m_rect.height);
-      x = m_rect.width - shift_x;
-      delta = static_cast<double>(shift_x);
-      break;
   }
 
-  draw_util::fill(m_connection, m_pixmap, m_gcontexts.at(gc::BG), x, 0, m_rect.width - x, m_rect.height);
+  // if (m_color_background && m_color_background != m_bar.background) {
+  //   m_context->save();
+  //   *m_context << m_color_background;
+  //   *m_context << m_compositing_background;
+  //   *m_context << cairo::rect{origin.x, origin.y, extents.width, static_cast<double>(m_rect.height)};
+  //   m_context->fill();
+  //   m_context->restore();
+  // }
 
-  // Translate pos of clickable areas
+  origin.y += m_rect.height / 2.0;
-  if (m_alignment != alignment::LEFT) {
+
+  m_context->save();
+  *m_context << origin;
+  *m_context << m_compositing_foreground;
+  *m_context << m_color_foreground;
+  *m_context << cairo::textblock{contents, m_fontindex};
+  m_context->position(&m_x, &m_y);
+  m_context->restore();
+
+  // if (m_alignment == alignment::CENTER) {
+  //   m_x += extents.width / 2.0;
+  // } else {
+  //   m_x += extents.width;
+  // }
+
+  // fill_underline(origin.x, m_x - origin.x);
+  // fill_overline(origin.x, m_x - origin.x);
+}
+
+/**
+ * Move clickable areas position by given delta
+ */
+void renderer::adjust_clickable_areas(double delta) {
   for (auto&& action : m_actions) {
-      if (action.active || action.align != m_alignment) {
+    if (!action.active && action.align == m_alignment) {
-        continue;
-      }
       action.start_x -= delta;
       action.end_x -= delta;
     }
   }
-
-  m_currentx += shift_x;
-
-  return x;
 }
 
-/**
- * @see shift_content
- */
-int16_t renderer::shift_content(const int16_t shift_x) {
-  return shift_content(m_currentx, shift_x);
-}
-
-#ifdef DEBUG_HINTS
 /**
  * Draw boxes at the location of each created action block
  */
-void renderer::debug_hints() {
+void renderer::highlight_clickable_areas() {
-  uint16_t border_width{1};
+#ifdef DEBUG_HINTS
-  map<alignment, int> hint_num{{
+  map<alignment, int> hint_num{};
-      // clang-format off
-      {alignment::LEFT, 0},
-      {alignment::CENTER, 0},
-      {alignment::RIGHT, 0},
-      // clang-format on
-  }};
-
-  m_debughints.clear();
-
   for (auto&& action : m_actions) {
-    if (action.active) {
+    if (!action.active) {
-      continue;
+      uint8_t n = hint_num.find(action.align)->second++;
+      double x = action.start_x + n * DEBUG_HINTS_OFFSET_X;
+      double y = m_bar.pos.y + m_rect.y + n * DEBUG_HINTS_OFFSET_Y;
+      double w = action.width();
+      double h = m_rect.height;
+
+      m_context->save();
+      *m_context << CAIRO_OPERATOR_OVERLAY << (n % 2 ? 0x55FF0000 : 0x5500FF00);
+      *m_context << cairo::rect{x, y, w, h};
+      m_context->fill();
+      m_context->restore();
     }
-
-    xcb_window_t hintwin{m_connection.generate_id()};
-    m_debughints.emplace_back(hintwin);
-
-    uint8_t num{static_cast<uint8_t>(hint_num.find(action.align)->second++)};
-
-    // clang-format off
-    winspec(m_connection, hintwin)
-      << cw_size(action.width() - border_width * 2, m_rect.height - border_width * 2)
-      << cw_pos(action.start_x + num * DEBUG_HINTS_OFFSET_X, m_bar.pos.y + m_rect.y + num * DEBUG_HINTS_OFFSET_Y)
-      << cw_border(border_width)
-      << cw_depth(m_depth)
-      << cw_visual(m_visual->visual_id)
-      << cw_params_colormap(m_colormap)
-      << cw_params_back_pixel(0)
-      << cw_params_border_pixel(num % 2 ? 0xFFFF0000 : 0xFF00FF00)
-      << cw_params_override_redirect(true)
-      << cw_flush()
-      ;
-    // clang-format on
-
-    const uint32_t shadow{0};
-    m_connection.change_property(XCB_PROP_MODE_REPLACE, hintwin, _COMPTON_SHADOW, XCB_ATOM_CARDINAL, 32, 1, &shadow);
-    m_connection.map_window(hintwin);
   }
-}
 #endif
+}
 
-bool renderer::on(const change_background& evt) {
+bool renderer::on(const signals::parser::change_background& evt) {
   const uint32_t color{evt.cast()};
-
+  if (color != m_color_background) {
-  if (m_colors[gc::BG] == color) {
+    m_color_background = color;
-    m_log.trace_x("renderer: ignoring unchanged background color(#%08x)", color);
-  } else {
-    m_log.trace_x("renderer: set_background(#%08x)", color);
-    m_connection.change_gc(m_gcontexts.at(gc::BG), XCB_GC_FOREGROUND, &color);
-    m_colors[gc::BG] = color;
-    shift_content(0);
   }
-
   return true;
 }
 
-bool renderer::on(const change_foreground& evt) {
+bool renderer::on(const signals::parser::change_foreground& evt) {
   const uint32_t color{evt.cast()};
-
+  if (color != m_color_foreground) {
-  if (m_colors[gc::FG] == color) {
+    m_color_foreground = color;
-    m_log.trace_x("renderer: ignoring unchanged foreground color(#%08x)", color);
-  } else {
-    m_log.trace_x("renderer: set_foreground(#%08x)", color);
-    m_connection.change_gc(m_gcontexts.at(gc::FG), XCB_GC_FOREGROUND, &color);
-    m_fontmanager->allocate_color(color);
-    m_colors[gc::FG] = color;
   }
-
   return true;
 }
 
-bool renderer::on(const change_underline& evt) {
+bool renderer::on(const signals::parser::change_underline& evt) {
   const uint32_t color{evt.cast()};
-
+  if (color != m_color_underline) {
-  if (m_colors[gc::UL] == color) {
+    m_color_underline = color;
-    m_log.trace_x("renderer: ignoring unchanged underline color(#%08x)", color);
-  } else {
-    m_log.trace_x("renderer: set_underline(#%08x)", color);
-    m_connection.change_gc(m_gcontexts.at(gc::UL), XCB_GC_FOREGROUND, &color);
-    m_colors[gc::UL] = color;
   }
-
   return true;
 }
 
-bool renderer::on(const change_overline& evt) {
+bool renderer::on(const signals::parser::change_overline& evt) {
   const uint32_t color{evt.cast()};
-
+  if (color != m_color_overline) {
-  if (m_colors[gc::OL] == color) {
+    m_color_overline = color;
-    m_log.trace_x("renderer: ignoring unchanged overline color(#%08x)", color);
-  } else {
-    m_log.trace_x("renderer: set_overline(#%08x)", color);
-    m_connection.change_gc(m_gcontexts.at(gc::OL), XCB_GC_FOREGROUND, &color);
-    m_colors[gc::OL] = color;
   }
-
   return true;
 }
 
-bool renderer::on(const change_font& evt) {
+bool renderer::on(const signals::parser::change_font& evt) {
-  const uint8_t font{evt.cast()};
+  m_fontindex = evt.cast();
-
-  if (m_fontindex == font) {
-    m_log.trace_x("renderer: ignoring unchanged font index(%i)", static_cast<uint8_t>(font));
-  } else {
-    m_log.trace_x("renderer: fontindex(%i)", static_cast<uint8_t>(font));
-    m_fontmanager->fontindex(font);
-    m_fontindex = font;
-  }
-
   return true;
 }
 
-bool renderer::on(const change_alignment& evt) {
+bool renderer::on(const signals::parser::change_alignment& evt) {
   auto align = static_cast<const alignment&>(evt.cast());
-
+  if (align != m_alignment) {
-  if (align == m_alignment) {
-    m_log.trace_x("renderer: ignoring unchanged alignment(%i)", static_cast<uint8_t>(align));
-  } else {
-    m_log.trace_x("renderer: set_alignment(%i)", static_cast<uint8_t>(align));
     m_alignment = align;
-    m_currentx = 0;
+    m_x = 0.0;
   }
-
   return true;
 }
 
-bool renderer::on(const offset_pixel& evt) {
+bool renderer::on(const signals::parser::offset_pixel& evt) {
-  shift_content(evt.cast());
+  m_x += evt.cast();
   return true;
 }
 
-bool renderer::on(const attribute_set& evt) {
+bool renderer::on(const signals::parser::attribute_set& evt) {
-  m_log.trace_x("renderer: attribute_set(%i, %i)", static_cast<uint8_t>(evt.cast()), true);
+  m_attributes.set(static_cast<uint8_t>(evt.cast()), true);
-  m_attributes |= 1U << static_cast<uint8_t>(evt.cast());
   return true;
 }
 
-bool renderer::on(const attribute_unset& evt) {
+bool renderer::on(const signals::parser::attribute_unset& evt) {
-  m_log.trace_x("renderer: attribute_unset(%i, %i)", static_cast<uint8_t>(evt.cast()), true);
+  m_attributes.set(static_cast<uint8_t>(evt.cast()), false);
-  m_attributes &= ~(1U << static_cast<uint8_t>(evt.cast()));
   return true;
 }
 
-bool renderer::on(const attribute_toggle& evt) {
+bool renderer::on(const signals::parser::attribute_toggle& evt) {
-  m_log.trace_x("renderer: attribute_toggle(%i)", static_cast<uint8_t>(evt.cast()));
+  m_attributes.flip(static_cast<uint8_t>(evt.cast()));
-  m_attributes ^= 1U << static_cast<uint8_t>(evt.cast());
   return true;
 }
 
-bool renderer::on(const action_begin& evt) {
+bool renderer::on(const signals::parser::action_begin& evt) {
-  auto a = static_cast<const action&>(evt.cast());
+  (void) evt;
-  action_block action{};
+  // auto a = evt.cast();
-  action.button = a.button;
+  // action_block action{};
-  action.align = m_alignment;
+  // action.button = a.button == mousebtn::NONE ? mousebtn::LEFT : a.button;
-  action.start_x = m_currentx;
+  // action.align = m_alignment;
-  action.command = string_util::replace_all(a.command, ":", "\\:");
+  // action.start_x = m_x;
-  action.active = true;
+  // action.command = string_util::replace_all(a.command, ":", "\\:");
-
+  // action.active = true;
-  if (action.button == mousebtn::NONE) {
+  // m_actions.emplace_back(action);
-    action.button = mousebtn::LEFT;
-  }
-
-  m_log.trace_x("renderer: action_begin(%i, %s)", static_cast<uint8_t>(a.button), a.command.c_str());
-  m_actions.emplace_back(action);
-
   return true;
 }
 
-bool renderer::on(const action_end& evt) {
+bool renderer::on(const signals::parser::action_end& evt) {
-  auto btn = static_cast<const mousebtn&>(evt.cast());
+  (void) evt;
-  int16_t clickable_width{0};
+  // auto btn = evt.cast();
-
+  // int16_t clickable_width = 0;
-  for (auto action = m_actions.rbegin(); action != m_actions.rend(); action++) {
+  // for (auto action = m_actions.rbegin(); action != m_actions.rend(); action++) {
-    if (!action->active || action->align != m_alignment || action->button != btn) {
+  //   if (action->active && action->align == m_alignment && action->button == btn) {
-      continue;
+  //     switch (action->align) {
-    }
+  //       case alignment::NONE:
-
+  //         break;
-    action->active = false;
+  //       case alignment::LEFT:
-
+  //         action->end_x = m_x;
-    switch (action->align) {
+  //         break;
-      case alignment::NONE:
+  //       case alignment::CENTER:
-        break;
+  //         clickable_width = m_x - action->start_x;
-      case alignment::LEFT:
+  //         action->start_x = m_rect.width / 2 - clickable_width / 2 + action->start_x / 2;
-        action->end_x = m_currentx;
+  //         action->end_x = action->start_x + clickable_width;
-        break;
+  //         break;
-      case alignment::CENTER:
+  //       case alignment::RIGHT:
-        clickable_width = m_currentx - action->start_x;
+  //         action->start_x = m_rect.width - m_x + action->start_x;
-        action->start_x = m_rect.width / 2 - clickable_width / 2 + action->start_x / 2;
+  //         action->end_x = m_rect.width;
-        action->end_x = action->start_x + clickable_width;
+  //         break;
-        break;
+  //     }
-      case alignment::RIGHT:
+  //     action->start_x += m_rect.x;
-        action->start_x = m_rect.width - m_currentx + action->start_x;
+  //     action->end_x += m_rect.x;
-        action->end_x = m_rect.width;
+  //     action->active = false;
-        break;
+  //   }
-    }
+  // }
-
-    action->start_x += m_rect.x;
-    action->end_x += m_rect.x;
-
-    m_log.trace_x("renderer: action_end(%i, %s, %i)", static_cast<uint8_t>(btn), action->command, action->width());
-  }
-
   return true;
 }
 
-bool renderer::on(const write_text_ascii& evt) {
+bool renderer::on(const signals::parser::text& evt) {
-  const uint16_t data[1]{evt.cast()};
+  auto text = evt.cast();
-  draw_textstring(data, 1);
+  draw_text(text);
-  return true;
-}
-
-bool renderer::on(const write_text_unicode& evt) {
-  const uint16_t data[1]{evt.cast()};
-  draw_textstring(data, 1);
-  return true;
-}
-
-bool renderer::on(const write_text_string& evt) {
-  auto pkt = evt.cast();
-  draw_textstring(pkt.data, pkt.length);
   return true;
 }
 

src/x11/color.cpp

@@ -1,70 +0,0 @@
-#include <iomanip>
-#include <utility>
-
-#include "errors.hpp"
-#include "utils/color.hpp"
-#include "utils/string.hpp"
-#include "x11/color.hpp"
-
-POLYBAR_NS
-
-mutex_wrapper<std::unordered_map<string, color>> g_colorstore;
-
-const color& g_colorempty{"#00000000"};
-const color& g_colorblack{"#ff000000"};
-const color& g_colorwhite{"#ffffffff"};
-
-color::color(string hex) : m_source(hex) {
-  if (hex.empty()) {
-    throw application_error("Cannot create color from empty hex");
-  }
-
-  m_value = std::strtoul(&hex[1], nullptr, 16);
-  m_color = color_util::premultiply_alpha(m_value);
-}
-
-string color::source() const {
-  return m_source;
-}
-
-color::operator XRenderColor() const {
-  XRenderColor x{};
-  x.red = color_util::red_channel<uint16_t>(m_color);
-  x.green = color_util::green_channel<uint16_t>(m_color);
-  x.blue = color_util::blue_channel<uint16_t>(m_color);
-  x.alpha = color_util::alpha_channel<uint16_t>(m_color);
-  return x;
-}
-
-color::operator string() const {
-  return color_util::hex<uint8_t>(m_color);
-}
-
-color::operator uint32_t() {
-  return static_cast<const color&>(*this);
-}
-
-color::operator uint32_t() const {
-  return m_color;
-}
-
-const color& color::parse(string input, const color& fallback) {
-  if (input.empty()) {
-    throw application_error("Cannot parse empty color");
-  } else if ((input = color_util::parse_hex(move(input))).empty()) {
-    return fallback;
-  }
-
-  std::lock_guard<decltype(g_colorstore)> guard(g_colorstore);
-  auto it = g_colorstore.find(input);
-  if (it == g_colorstore.end()) {
-    it = g_colorstore.emplace_hint(it, make_pair(input, color{input}));
-  }
-  return it->second;
-}
-
-const color& color::parse(string input) {
-  return parse(move(input), g_colorempty);
-}
-
-POLYBAR_NS_END

src/x11/draw.cpp

@@ -1,5 +1,5 @@
 #include "x11/draw.hpp"
-#include "x11/connection.hpp"
+#include "utils/color.hpp"
 
 POLYBAR_NS
 

src/x11/fonts.cpp

@@ -1,307 +0,0 @@
-#include "x11/fonts.hpp"
-#include "components/logger.hpp"
-#include "errors.hpp"
-#include "utils/color.hpp"
-#include "utils/factory.hpp"
-#include "utils/memory.hpp"
-#include "x11/connection.hpp"
-#include "x11/draw.hpp"
-
-POLYBAR_NS
-
-void font_ref::_deleter::operator()(font_ref* font) {
-  font->glyph_widths.clear();
-  font->width_lut.clear();
-
-  if (font->xft != nullptr || font->ptr != XCB_NONE) {
-    auto& conn = connection::make();
-    if (font->xft != nullptr) {
-      XftFontClose(conn, font->xft);
-    }
-    if (font->ptr != XCB_NONE) {
-      xcb_close_font(conn, font->ptr);
-    }
-  }
-  delete font;
-}
-
-/**
- * Create instance
- */
-font_manager::make_type font_manager::make() {
-  return factory_util::unique<font_manager>(connection::make(), logger::make());
-}
-
-font_manager::font_manager(connection& conn, const logger& logger)
-    : m_connection(conn)
-    , m_logger(logger)
-    , m_display(m_connection)
-    , m_visual(m_connection.visual())
-    , m_colormap(XDefaultColormap(m_display, m_connection.default_screen())) {}
-
-font_manager::~font_manager() {
-  cleanup();
-  if (m_display) {
-    if (m_xftcolor_allocated) {
-      XftColorFree(m_display, m_visual, m_colormap, &m_xftcolor);
-    }
-    XFreeColormap(m_display, m_colormap);
-  }
-}
-
-void font_manager::set_visual(Visual* v) {
-  m_visual = v;
-}
-
-void font_manager::cleanup() {
-  if (m_xftdraw != nullptr) {
-    XftDrawDestroy(m_xftdraw);
-    m_xftdraw = nullptr;
-  }
-}
-
-bool font_manager::load(const string& name, uint8_t fontindex, int8_t offset_y) {
-  if (fontindex > 0 && m_fonts.find(fontindex) != m_fonts.end()) {
-    m_logger.warn("A font with index '%i' has already been loaded, skip...", fontindex);
-    return false;
-  } else if (fontindex == 0) {
-    fontindex = m_fonts.size();
-    m_logger.trace("font_manager: Assign font '%s' to index '%u'", name, fontindex);
-  } else {
-    m_logger.trace("font_manager: Add font '%s' to index '%u'", name, fontindex);
-  }
-
-  shared_ptr<font_ref> font{new font_ref{}, font_ref::deleter};
-
-  font->offset_y = offset_y;
-
-  if (open_xcb_font(font, name)) {
-    m_logger.info("Loaded font (xlfd=%s)", name);
-  } else if (font->ptr != XCB_NONE) {
-    m_connection.close_font_checked(font->ptr);
-    font->ptr = XCB_NONE;
-  }
-
-  if (font->ptr == XCB_NONE &&
-      (font->xft = XftFontOpenName(m_display, m_connection.default_screen(), name.c_str())) != nullptr) {
-    font->ascent = font->xft->ascent;
-    font->descent = font->xft->descent;
-    font->height = font->ascent + font->descent;
-
-    if (font->xft->pattern != nullptr) {
-      // XftChar8* file;
-      // XftPatternGetString(font->xft->pattern, "file", 0, &file);
-      // m_logger.info("Loaded font (pattern=%s, file=%s)", name, file);
-      m_logger.info("Loaded font (pattern=%s)", name);
-    } else {
-      m_logger.info("Loaded font (pattern=%s)", name);
-    }
-  }
-
-  if (font->ptr == XCB_NONE && font->xft == nullptr) {
-    return false;
-  }
-
-  m_fonts.emplace(make_pair(fontindex, move(font)));
-
-  int max_height{0};
-
-  for (auto& iter : m_fonts) {
-    if (iter.second->height > max_height) {
-      max_height = iter.second->height;
-    }
-  }
-
-  for (auto& iter : m_fonts) {
-    iter.second->height = max_height;
-  }
-
-  return true;
-}
-
-void font_manager::fontindex(uint8_t index) {
-  if ((m_fontindex = index) > 0) {
-    for (auto&& font : m_fonts) {
-      if (font.first == index) {
-        m_fontindex = index;
-        break;
-      }
-    }
-  }
-}
-
-shared_ptr<font_ref> font_manager::match_char(const uint16_t chr) {
-  if (!m_fonts.empty()) {
-    if (m_fontindex > 0 && static_cast<size_t>(m_fontindex) <= m_fonts.size()) {
-      auto iter = m_fonts.find(m_fontindex);
-      if (iter != m_fonts.end() && iter->second) {
-        if (has_glyph_xft(iter->second, chr)) {
-          return iter->second;
-        } else if (has_glyph_xcb(iter->second, chr)) {
-          return iter->second;
-        }
-      }
-    }
-    for (auto&& font : m_fonts) {
-      if (font.second && has_glyph_xft(font.second, chr)) {
-        return font.second;
-      } else if (font.second && has_glyph_xcb(font.second, chr)) {
-        return font.second;
-      }
-    }
-  }
-
-  return {};
-}
-
-uint8_t font_manager::glyph_width(const shared_ptr<font_ref>& font, const uint16_t chr) {
-  if (font && font->xft != nullptr) {
-    return glyph_width_xft(move(font), chr);
-  } else if (font && font->ptr != XCB_NONE) {
-    return glyph_width_xcb(move(font), chr);
-  } else {
-    return 0;
-  }
-}
-
-void font_manager::drawtext(const shared_ptr<font_ref>& font, xcb_pixmap_t pm, xcb_gcontext_t gc, int16_t x, int16_t y,
-    const uint16_t* chars, size_t num_chars) {
-  if (m_xftdraw == nullptr) {
-    m_xftdraw = XftDrawCreate(m_display, pm, m_visual, m_colormap);
-  }
-  if (font->xft != nullptr) {
-    XftDrawString16(m_xftdraw, &m_xftcolor, font->xft, x, y, chars, num_chars);
-  } else if (font->ptr != XCB_NONE) {
-    vector<uint16_t> ucs(num_chars);
-    for (size_t i = 0; i < num_chars; i++) {
-      ucs[i] = (chars[i] >> 8) | (chars[i] << 8);
-    }
-    xcb_poly_text_16(pm, gc, x, y, num_chars, ucs.data());
-  }
-}
-
-void font_manager::allocate_color(uint32_t color) {
-  // clang-format off
-  XRenderColor x{
-    color_util::red_channel<uint16_t>(color),
-    color_util::green_channel<uint16_t>(color),
-    color_util::blue_channel<uint16_t>(color),
-    color_util::alpha_channel<uint16_t>(color)};
-  // clang-format on
-  allocate_color(x);
-}
-
-void font_manager::allocate_color(XRenderColor color) {
-  if (m_xftcolor_allocated) {
-    XftColorFree(m_display, m_visual, m_colormap, &m_xftcolor);
-  }
-
-  if (!(m_xftcolor_allocated = XftColorAllocValue(m_display, m_visual, m_colormap, &color, &m_xftcolor))) {
-    m_logger.err("Failed to allocate color");
-  }
-}
-
-bool font_manager::open_xcb_font(const shared_ptr<font_ref>& font, string fontname) {
-  try {
-    uint32_t font_id{m_connection.generate_id()};
-    m_connection.open_font_checked(font_id, fontname);
-
-    m_logger.trace("Found X font '%s'", fontname);
-    font->ptr = font_id;
-
-    auto query = m_connection.query_font(font_id);
-    if (query->char_infos_len == 0) {
-      m_logger.warn("X font '%s' does not contain any characters... (Verify the XLFD string)", fontname);
-      return false;
-    }
-
-    font->descent = query->font_descent;
-    font->height = query->font_ascent + query->font_descent;
-    font->width = query->max_bounds.character_width;
-    font->char_max = query->max_byte1 << 8 | query->max_char_or_byte2;
-    font->char_min = query->min_byte1 << 8 | query->min_char_or_byte2;
-
-    auto chars = query.char_infos();
-    for (auto it = chars.begin(); it != chars.end(); it++) {
-      font->width_lut.emplace_back(forward<xcb_charinfo_t>(*it));
-    }
-    return true;
-  } catch (const std::exception& e) {
-    m_logger.trace("font_manager: Could not find X font '%s' (what: %s)", fontname, e.what());
-  }
-
-  return false;
-}
-
-uint8_t font_manager::glyph_width_xft(const shared_ptr<font_ref>& font, const uint16_t chr) {
-  auto it = font->glyph_widths.find(chr);
-  if (it != font->glyph_widths.end()) {
-    return it->second;
-  }
-
-  XGlyphInfo extents{};
-  FT_UInt glyph{XftCharIndex(m_display, font->xft, static_cast<FcChar32>(chr))};
-
-  XftFontLoadGlyphs(m_display, font->xft, FcFalse, &glyph, 1);
-  XftGlyphExtents(m_display, font->xft, &glyph, 1, &extents);
-  XftFontUnloadGlyphs(m_display, font->xft, &glyph, 1);
-
-  font->glyph_widths.emplace_hint(it, chr, extents.xOff);  //.emplace_back(chr, extents.xOff);
-
-  return extents.xOff;
-}
-
-uint8_t font_manager::glyph_width_xcb(const shared_ptr<font_ref>& font, const uint16_t chr) {
-  if (!font || font->ptr == XCB_NONE) {
-    return 0;
-  } else if (static_cast<size_t>(chr - font->char_min) < font->width_lut.size()) {
-    return font->width_lut[chr - font->char_min].character_width;
-  } else {
-    return font->width;
-  }
-}
-
-bool font_manager::has_glyph_xft(const shared_ptr<font_ref>& font, const uint16_t chr) {
-  if (!font || font->xft == nullptr) {
-    return false;
-  } else if (XftCharExists(m_display, font->xft, static_cast<FcChar32>(chr)) == FcFalse) {
-    return false;
-  } else {
-    return true;
-  }
-}
-
-bool font_manager::has_glyph_xcb(const shared_ptr<font_ref>& font, const uint16_t chr) {
-  if (font->ptr == XCB_NONE) {
-    return false;
-  } else if (chr < font->char_min || chr > font->char_max) {
-    return false;
-  } else if (static_cast<size_t>(chr - font->char_min) >= font->width_lut.size()) {
-    return false;
-  } else if (font->width_lut[chr - font->char_min].character_width == 0) {
-    return false;
-  } else {
-    return true;
-  }
-}
-
-void font_manager::xcb_poly_text_16(
-    xcb_drawable_t d, xcb_gcontext_t gc, int16_t x, int16_t y, uint8_t len, uint16_t* str) {
-  static const xcb_protocol_request_t xcb_req = {5, nullptr, XCB_POLY_TEXT_16, 1};
-  xcb_poly_text_16_request_t req{XCB_POLY_TEXT_16, 0, len, d, gc, x, y};
-  uint8_t xcb_lendelta[2]{len, 0};
-  struct iovec xcb_parts[7]{};
-  xcb_parts[2].iov_base = reinterpret_cast<char*>(&req);
-  xcb_parts[2].iov_len = sizeof(req);
-  xcb_parts[3].iov_base = nullptr;
-  xcb_parts[3].iov_len = -xcb_parts[2].iov_len & 3;
-  xcb_parts[4].iov_base = xcb_lendelta;
-  xcb_parts[4].iov_len = sizeof(xcb_lendelta);
-  xcb_parts[5].iov_base = reinterpret_cast<char*>(str);
-  xcb_parts[5].iov_len = len * sizeof(int16_t);
-  xcb_parts[6].iov_base = nullptr;
-  xcb_parts[6].iov_len = -(xcb_parts[4].iov_len + xcb_parts[5].iov_len) & 3;
-  xcb_send_request(m_connection, 0, xcb_parts + 2, &xcb_req);
-}
-
-POLYBAR_NS_END

src/x11/tray_manager.cpp

@@ -12,7 +12,6 @@
 #include "utils/memory.hpp"
 #include "utils/process.hpp"
 #include "x11/atoms.hpp"
-#include "x11/color.hpp"
 #include "x11/connection.hpp"
 #include "x11/draw.hpp"
 #include "x11/graphics.hpp"
@@ -133,7 +132,7 @@ void tray_manager::setup(const bar_settings& bar_opts) {
     }
 
     if (!bg.empty()) {
-      m_opts.background = color::parse(bg, g_colorempty);
+      m_opts.background = color_util::parse(bg);
     } else {
       m_opts.background = bar_opts.background;
     }