fix(toplevel): added support for beginMove. The settings window can be repositionned without Meta key

src/shell/settings/settings_window.cpp

@@ -40,6 +40,7 @@
 #include <cstdint>
 #include <filesystem>
 #include <fstream>
+#include <linux/input-event-codes.h>
 #include <memory>
 #include <optional>
 #include <string>
@@ -363,6 +364,7 @@ void SettingsWindow::destroyWindow() {
     m_surface->setSceneRoot(nullptr);
   }
   m_mainContainer = nullptr;
+  m_headerRow = nullptr;
   m_contentContainer = nullptr;
   m_contentScrollView = nullptr;
   m_actionsMenuButton = nullptr;
@@ -1503,6 +1505,7 @@ void SettingsWindow::buildScene(std::uint32_t width, std::uint32_t height) {
 
   m_inputDispatcher.setSceneRoot(nullptr);
   m_mainContainer = nullptr;
+  m_headerRow = nullptr;
   m_panelBackground = nullptr;
   m_contentContainer = nullptr;
   m_sceneRoot = std::make_unique<Node>();
@@ -1573,7 +1576,7 @@ void SettingsWindow::buildScene(std::uint32_t width, std::uint32_t height) {
   closeBtn->setOnClick([this]() { close(); });
   header->addChild(std::move(closeBtn));
 
-  main->addChild(centeredRow(std::move(header)));
+  m_headerRow = main->addChild(centeredRow(std::move(header)));
 
   const auto requestRebuild = [this]() { requestSceneRebuild(); };
   const auto clearStatus = [this]() { clearStatusMessage(); };
@@ -1861,6 +1864,16 @@ bool SettingsWindow::onPointerEvent(const PointerEvent& event) {
       if (onThis) {
         m_pointerInside = true;
       }
+      if (pressed && event.button == BTN_LEFT && m_headerRow != nullptr && m_inputDispatcher.hoveredArea() == nullptr) {
+        float hx = 0.0f;
+        float hy = 0.0f;
+        Node::absolutePosition(m_headerRow, hx, hy);
+        if (static_cast<float>(event.sy) < hy + m_headerRow->height()) {
+          m_surface->beginMove(event.serial);
+          consumed = true;
+          break;
+        }
+      }
       if (pressed) {
         Select::handleGlobalPointerPress(m_inputDispatcher.hoveredArea());
       }

src/shell/settings/settings_window.h

@@ -95,8 +95,9 @@ private:
 
   std::unique_ptr<ToplevelSurface> m_surface;
   std::unique_ptr<Node> m_sceneRoot;
-  Flex* m_mainContainer = nullptr;  // Outer Flex inside m_sceneRoot, sized to the window
-  Box* m_panelBackground = nullptr; // Window-sized background panel inside m_sceneRoot
+  Flex* m_mainContainer = nullptr; // Outer Flex inside m_sceneRoot, sized to the window
+  Box* m_panelBackground = nullptr;
+  Node* m_headerRow = nullptr;
   Button* m_actionsMenuButton = nullptr;
   Flex* m_contentContainer = nullptr;
   ScrollView* m_contentScrollView = nullptr;

src/wayland/toplevel_surface.cpp

@@ -93,6 +93,12 @@ bool ToplevelSurface::initialize(wl_output* output, ToplevelSurfaceConfig config
 
 void ToplevelSurface::setClosedCallback(std::function<void()> callback) { m_closedCallback = std::move(callback); }
 
+void ToplevelSurface::beginMove(std::uint32_t serial) {
+  if (m_toplevel != nullptr) {
+    xdg_toplevel_move(m_toplevel, m_connection.seat(), serial);
+  }
+}
+
 void ToplevelSurface::handleXdgSurfaceConfigure(void* data, xdg_surface* surface, std::uint32_t serial) {
   auto* self = static_cast<ToplevelSurface*>(data);
   xdg_surface_ack_configure(surface, serial);

src/wayland/toplevel_surface.h

@@ -30,6 +30,7 @@ public:
   bool initialize(wl_output* output, ToplevelSurfaceConfig config);
 
   void setClosedCallback(std::function<void()> callback);
+  void beginMove(std::uint32_t serial);
 
   [[nodiscard]] xdg_surface* xdgSurface() const noexcept { return m_xdgSurface; }