feat(bar): control center button

example.toml

@@ -170,7 +170,7 @@ capsule            = false
 
 start  = ["launcher", "wallpaper", "workspaces"]
 center = ["clock"]
-end    = ["media", "tray", "notifications", "network", "bluetooth", "volume", "brightness", "battery", "session"]
+end    = ["media", "tray", "notifications", "network", "bluetooth", "volume", "brightness", "battery", "control-center", "session"]
 
 # Per-monitor override example — only the fields you list are overridden:
 # [bar.main.monitor.dp1]

meson.build

@@ -449,6 +449,7 @@ _noctalia_sources = files(
   'src/shell/bar/widgets/audio_visualizer_widget.cpp',
   'src/shell/bar/widgets/battery_widget.cpp',
   'src/shell/bar/widgets/bluetooth_widget.cpp',
+  'src/shell/bar/widgets/control_center_widget.cpp',
   'src/shell/bar/widgets/clock_widget.cpp',
   'src/shell/bar/widgets/idle_inhibitor_widget.cpp',
   'src/shell/bar/widgets/keyboard_layout_widget.cpp',

src/config/config_service.h

@@ -78,7 +78,7 @@ struct BarConfig {
   std::vector<std::string> startWidgets = {"launcher", "wallpaper", "workspaces"};
   std::vector<std::string> centerWidgets = {"clock"};
   std::vector<std::string> endWidgets = {"media",  "tray",       "notifications", "network", "bluetooth",
-                                         "volume", "brightness", "battery",       "session"};
+                                         "volume", "brightness", "battery", "control-center", "session"};
   // When true, widgets on this bar use a capsule unless `[widget.*] capsule = false`.
   bool widgetCapsuleDefault = false;
   ThemeColor widgetCapsuleFill = roleColor(ColorRole::SurfaceVariant);

src/shell/bar/widget_factory.cpp

@@ -15,6 +15,7 @@
 #include "shell/bar/widgets/bluetooth_widget.h"
 #include "shell/bar/widgets/brightness_widget.h"
 #include "shell/bar/widgets/clock_widget.h"
+#include "shell/bar/widgets/control_center_widget.h"
 #include "shell/bar/widgets/idle_inhibitor_widget.h"
 #include "shell/bar/widgets/keyboard_layout_widget.h"
 #include "shell/bar/widgets/launcher_widget.h"
@@ -124,6 +125,17 @@ std::unique_ptr<Widget> WidgetFactory::create(const std::string& name, wl_output
     return widget;
   }
 
+ if (type == "control-center") {
+    auto barGlyph = wc != nullptr ? wc->getString("glyph", "noctalia") : std::string{"noctalia"};
+    if (barGlyph.empty()) {
+      barGlyph = "search";
+    }
+    auto widget = std::make_unique<ControlCenterWidget>(output, std::move(barGlyph));
+    widget->setContentScale(contentScale);
+    return widget;
+  }
+
+
   if (type == "idle_inhibitor") {
     auto widget = std::make_unique<IdleInhibitorWidget>(m_idleInhibitor);
     widget->setContentScale(contentScale);

src/shell/bar/widgets/control_center_widget.cpp

@@ -0,0 +1,42 @@
+#include "shell/bar/widgets/control_center_widget.h"
+
+#include "render/scene/input_area.h"
+#include "render/scene/node.h"
+#include "shell/panel/panel_manager.h"
+#include "ui/controls/glyph.h"
+#include "ui/palette.h"
+#include "ui/style.h"
+
+#include <memory>
+
+ControlCenterWidget::ControlCenterWidget(wl_output* output, std::string barGlyphId)
+    : m_output(output), m_barGlyphId(std::move(barGlyphId)) {}
+
+void ControlCenterWidget::create() {
+  auto area = std::make_unique<InputArea>();
+  area->setOnClick([this](const InputArea::PointerData& /*data*/) {
+    PanelManager::instance().togglePanel("control-center", m_output, 0.0f, 0.0f, "overview");
+  });
+
+  auto glyph = std::make_unique<Glyph>();
+  glyph->setGlyph(m_barGlyphId.empty() ? "search" : m_barGlyphId);
+  glyph->setGlyphSize(Style::fontSizeBody * m_contentScale);
+  glyph->setColor(widgetForegroundOr(roleColor(ColorRole::OnSurface)));
+  m_glyph = glyph.get();
+  area->addChild(std::move(glyph));
+
+  setRoot(std::move(area));
+}
+
+void ControlCenterWidget::doLayout(Renderer& renderer, float /*containerWidth*/, float /*containerHeight*/) {
+  if (m_glyph == nullptr) {
+    return;
+  }
+  m_glyph->setGlyphSize(Style::fontSizeBody * m_contentScale);
+  m_glyph->setColor(widgetForegroundOr(roleColor(ColorRole::OnSurface)));
+  m_glyph->measure(renderer);
+  auto* node = root();
+  if (node != nullptr) {
+    node->setSize(m_glyph->width(), m_glyph->height());
+  }
+}

src/shell/bar/widgets/control_center_widget.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#include "shell/bar/widget.h"
+
+#include <cstdint>
+#include <string>
+
+class Glyph;
+struct wl_output;
+
+class ControlCenterWidget : public Widget {
+public:
+  ControlCenterWidget(wl_output* output, std::string barGlyphId);
+
+  void create() override;
+
+private:
+  void doLayout(Renderer& renderer, float containerWidth, float containerHeight) override;
+  wl_output* m_output;
+  std::string m_barGlyphId;
+  Glyph* m_glyph = nullptr;
+};