tray: Add back legacy tray implementation

Is used for trays defined through tray-position and nothing else.

include/components/bar.hpp

@@ -23,10 +23,12 @@ class connection;
 class logger;
 class renderer;
 class screen;
+namespace legacy_tray {
 class tray_manager;
+}
 
 namespace tags {
-  class dispatch;
+class dispatch;
 }
 // }}}
 
@@ -92,7 +94,7 @@ class bar : public xpp::event::sink<evt::button_press, evt::expose, evt::propert
   const logger& m_log;
   eventloop::loop& m_loop;
   unique_ptr<screen> m_screen;
-  unique_ptr<tray_manager> m_tray;
+  unique_ptr<legacy_tray::tray_manager> m_tray;
   unique_ptr<renderer> m_renderer;
   unique_ptr<tags::dispatch> m_dispatch;
   unique_ptr<tags::action_context> m_action_ctxt;

include/x11/legacy_tray_manager.hpp

@@ -0,0 +1,236 @@
+#pragma once
+
+#include <xcb/xcb.h>
+
+#include <atomic>
+#include <chrono>
+#include <memory>
+
+#include "cairo/context.hpp"
+#include "cairo/surface.hpp"
+#include "common.hpp"
+#include "components/logger.hpp"
+#include "components/types.hpp"
+#include "events/signal_fwd.hpp"
+#include "events/signal_receiver.hpp"
+#include "utils/concurrency.hpp"
+#include "x11/atoms.hpp"
+#include "x11/connection.hpp"
+#include "x11/xembed.hpp"
+
+#define _NET_SYSTEM_TRAY_ORIENTATION_HORZ 0
+#define _NET_SYSTEM_TRAY_ORIENTATION_VERT 1
+
+#define SYSTEM_TRAY_REQUEST_DOCK 0
+#define SYSTEM_TRAY_BEGIN_MESSAGE 1
+#define SYSTEM_TRAY_CANCEL_MESSAGE 2
+
+#define TRAY_WM_NAME "Polybar tray window"
+#define TRAY_WM_CLASS "tray\0Polybar"
+
+POLYBAR_NS
+
+// fwd declarations
+class connection;
+class background_manager;
+class bg_slice;
+
+namespace legacy_tray {
+
+namespace chrono = std::chrono;
+using namespace std::chrono_literals;
+using std::atomic;
+
+enum class tray_postition { NONE = 0, LEFT, CENTER, RIGHT, MODULE };
+
+struct tray_settings {
+  tray_postition tray_position{tray_postition::NONE};
+  bool running{false};
+  int rel_x{0};
+  int rel_y{0};
+  int orig_x{0};
+  int orig_y{0};
+  int configured_x{0};
+  int configured_y{0};
+  unsigned int configured_w{0U};
+  unsigned int configured_h{0U};
+  unsigned int configured_slots{0U};
+  unsigned int width{0U};
+  unsigned int width_max{0U};
+  unsigned int height{0U};
+  unsigned int height_fill{0U};
+  unsigned int spacing{0U};
+  unsigned int sibling{0U};
+  rgba background{};
+  rgba foreground{};
+  bool transparent{false};
+  bool detached{false};
+};
+
+class tray_client {
+ public:
+  explicit tray_client(connection& conn, xcb_window_t win, unsigned int w, unsigned int h);
+  tray_client(const tray_client& c) = delete;
+  tray_client& operator=(tray_client& c) = delete;
+
+  ~tray_client();
+
+  unsigned int width() const;
+  unsigned int height() const;
+  void clear_window() const;
+
+  bool match(const xcb_window_t& win) const;
+  bool mapped() const;
+  void mapped(bool state);
+
+  xcb_window_t window() const;
+
+  void query_xembed();
+  bool is_xembed_supported() const;
+  const xembed::info& get_xembed() const;
+
+  void ensure_state() const;
+  void reconfigure(int x, int y) const;
+  void configure_notify(int x, int y) const;
+
+ protected:
+  connection& m_connection;
+  xcb_window_t m_window{0};
+
+  /**
+   * Whether the client window supports XEMBED.
+   *
+   * A tray client can still work when it doesn't support XEMBED.
+   */
+  bool m_xembed_supported{false};
+
+  /**
+   * _XEMBED_INFO of the client window
+   */
+  xembed::info m_xembed;
+
+  bool m_mapped{false};
+
+  unsigned int m_width;
+  unsigned int m_height;
+};
+
+class tray_manager
+    : public xpp::event::sink<evt::expose, evt::visibility_notify, evt::client_message, evt::configure_request,
+          evt::resize_request, evt::selection_clear, evt::property_notify, evt::reparent_notify, evt::destroy_notify,
+          evt::map_notify, evt::unmap_notify>,
+      public signal_receiver<SIGN_PRIORITY_TRAY, signals::ui::visibility_change, signals::ui::dim_window,
+          signals::ui::update_background, signals::ui_tray::tray_pos_change, signals::ui_tray::tray_visibility>,
+      public non_copyable_mixin,
+      public non_movable_mixin {
+ public:
+  using make_type = unique_ptr<tray_manager>;
+  static make_type make(const bar_settings& settings);
+
+  explicit tray_manager(connection& conn, signal_emitter& emitter, const logger& logger, background_manager& back,
+      const bar_settings& settings);
+
+  ~tray_manager();
+
+  const tray_settings settings() const;
+
+  void setup(const string& tray_module_name);
+  void activate();
+  void activate_delayed(chrono::duration<double, std::milli> delay = 1s);
+  void deactivate(bool clear_selection = true);
+  void reconfigure();
+
+ protected:
+  void reconfigure_window();
+  void reconfigure_clients();
+  void reconfigure_bg(bool realloc = false);
+  void refresh_window();
+  void redraw_window(bool realloc_bg = false);
+
+  void query_atom();
+  void create_window();
+  void create_bg(bool realloc = false);
+  void restack_window();
+  void set_wm_hints();
+  void set_tray_colors();
+
+  void acquire_selection();
+  void notify_clients();
+  void notify_clients_delayed();
+
+  void track_selection_owner(xcb_window_t owner);
+  void process_docking_request(xcb_window_t win);
+
+  int calculate_x(unsigned width) const;
+  int calculate_y(bool abspos = true) const;
+
+  unsigned short int calculate_w() const;
+  unsigned short int calculate_h() const;
+
+  int calculate_client_x(const xcb_window_t& win);
+  int calculate_client_y();
+
+  bool is_embedded(const xcb_window_t& win) const;
+  shared_ptr<tray_client> find_client(const xcb_window_t& win) const;
+  void remove_client(shared_ptr<tray_client>& client, bool reconfigure = true);
+  void remove_client(xcb_window_t win, bool reconfigure = true);
+  unsigned int mapped_clients() const;
+  bool change_visibility(bool visible);
+
+  void handle(const evt::expose& evt) override;
+  void handle(const evt::visibility_notify& evt) override;
+  void handle(const evt::client_message& evt) override;
+  void handle(const evt::configure_request& evt) override;
+  void handle(const evt::resize_request& evt) override;
+  void handle(const evt::selection_clear& evt) override;
+  void handle(const evt::property_notify& evt) override;
+  void handle(const evt::reparent_notify& evt) override;
+  void handle(const evt::destroy_notify& evt) override;
+  void handle(const evt::map_notify& evt) override;
+  void handle(const evt::unmap_notify& evt) override;
+
+  bool on(const signals::ui::visibility_change& evt) override;
+  bool on(const signals::ui::dim_window& evt) override;
+  bool on(const signals::ui::update_background& evt) override;
+  bool on(const signals::ui_tray::tray_pos_change& evt) override;
+  bool on(const signals::ui_tray::tray_visibility& evt) override;
+
+ private:
+  connection& m_connection;
+  signal_emitter& m_sig;
+  const logger& m_log;
+  background_manager& m_background_manager;
+  std::shared_ptr<bg_slice> m_bg_slice;
+  vector<shared_ptr<tray_client>> m_clients;
+
+  tray_settings m_opts{};
+
+  xcb_gcontext_t m_gc{0};
+  xcb_pixmap_t m_pixmap{0};
+  unique_ptr<cairo::surface> m_surface;
+  unique_ptr<cairo::context> m_context;
+
+  unsigned int m_prevwidth{0U};
+  unsigned int m_prevheight{0U};
+
+  xcb_atom_t m_atom{0};
+  xcb_window_t m_tray{0};
+  xcb_window_t m_othermanager{0};
+
+  atomic<bool> m_activated{false};
+  atomic<bool> m_mapped{false};
+  atomic<bool> m_hidden{false};
+  atomic<bool> m_acquired_selection{false};
+
+  thread m_delaythread;
+
+  mutex m_mtx{};
+
+  bool m_firstactivation{true};
+
+  const bar_settings& m_bar_opts;
+};
+
+} // namespace legacy_tray
+
+POLYBAR_NS_END

src/CMakeLists.txt

@@ -132,6 +132,7 @@ set(POLY_SOURCES
   ${src_dir}/x11/extensions/randr.cpp
   ${src_dir}/x11/icccm.cpp
   ${src_dir}/x11/registry.cpp
+  ${src_dir}/x11/legacy_tray_manager.cpp
   ${src_dir}/x11/tray_client.cpp
   ${src_dir}/x11/tray_manager.cpp
   ${src_dir}/x11/window.cpp

src/components/bar.cpp

@@ -20,7 +20,7 @@
 #include "x11/ewmh.hpp"
 #include "x11/extensions/all.hpp"
 #include "x11/icccm.hpp"
-#include "x11/tray_manager.hpp"
+#include "x11/legacy_tray_manager.hpp"
 
 #if WITH_XCURSOR
 #include "x11/cursor.hpp"
@@ -57,8 +57,6 @@ bar::make_type bar::make(loop& loop, bool only_initialize_values) {
 
 /**
  * Construct bar instance
- *
- * TODO: Break out all tray handling
  */
 bar::bar(connection& conn, signal_emitter& emitter, const config& config, const logger& logger, loop& loop,
     unique_ptr<screen>&& screen, unique_ptr<tags::dispatch>&& dispatch, unique_ptr<tags::action_context>&& action_ctxt,
@@ -73,7 +71,7 @@ bar::bar(connection& conn, signal_emitter& emitter, const config& config, const
     , m_action_ctxt(forward<decltype(action_ctxt)>(action_ctxt)) {
   string bs{m_conf.section()};
 
-  // m_tray = tray_manager::make(m_opts);
+  m_tray = legacy_tray::tray_manager::make(m_opts);
 
   // Get available RandR outputs
   auto monitor_name = m_conf.get(bs, "monitor", ""s);
@@ -388,20 +386,16 @@ void bar::parse(string&& data, bool force) {
 
   auto rect = m_opts.inner_area();
 
-  // TODO use legacy tray implementation
-#if 0
-  if (m_tray && !m_tray->settings().detached && m_tray->settings().num_mapped_clients > 0 &&
-      m_tray->settings().tray_position != tray_postition::MODULE) {
+  if (m_tray && !m_tray->settings().detached && m_tray->settings().configured_slots) {
     auto tray_pos = m_tray->settings().tray_position;
-    auto traywidth = m_tray->settings().win_size.w;
-    if (tray_pos == tray_postition::LEFT) {
+    auto traywidth = m_tray->settings().configured_w;
+    if (tray_pos == legacy_tray::tray_postition::LEFT) {
       rect.x += traywidth;
       rect.width -= traywidth;
-    } else if (tray_pos == tray_postition::RIGHT) {
+    } else if (tray_pos == legacy_tray::tray_postition::RIGHT) {
       rect.width -= traywidth;
     }
   }
-#endif
 
   m_log.info("Redrawing bar window");
   m_renderer->begin(rect);
@@ -840,10 +834,9 @@ void bar::handle(const evt::button_press& evt) {
  */
 void bar::handle(const evt::expose& evt) {
   if (evt->window == m_opts.x_data.window && evt->count == 0) {
-    // TODO
-    // if (m_tray->running()) {
-    //   broadcast_visibility();
-    // }
+    if (m_tray && m_tray->settings().running) {
+      broadcast_visibility();
+    }
 
     m_log.trace("bar: Received expose event");
     m_renderer->flush();
@@ -880,7 +873,7 @@ void bar::handle(const evt::configure_notify& evt) {
   m_sig.emit(signals::ui::update_geometry{});
 }
 
-void bar::start(const string&) {
+void bar::start(const string& tray_module_name) {
   m_log.trace("bar: Create renderer");
   m_renderer = renderer::make(m_opts, *m_action_ctxt);
 
@@ -911,7 +904,12 @@ void bar::start(const string&) {
   m_renderer->end();
 
   m_log.trace("bar: Setup tray manager");
-  // m_tray->setup(tray_module_name);
+  m_tray->setup(tray_module_name);
+
+  if (m_tray->settings().tray_position == legacy_tray::tray_postition::MODULE ||
+      m_tray->settings().tray_position == legacy_tray::tray_postition::NONE) {
+    m_tray.reset();
+  }
 
   broadcast_visibility();
 }