service/tray!: redesign menus / dbusmenu and add native menu support

Reworks dbusmenu menus to be displayable with a system context menu.

Breaks the entire DBusMenu api.

src/wayland/CMakeLists.txt

@@ -50,7 +50,9 @@ endfunction()
 
 # -----
 
-qt_add_library(quickshell-wayland STATIC)
+qt_add_library(quickshell-wayland STATIC
+	platformmenu.cpp
+)
 
 # required to make sure the constructor is linked
 add_library(quickshell-wayland-init OBJECT init.cpp)

src/wayland/init.cpp

@@ -4,6 +4,7 @@
 #include <qtenvironmentvariables.h>
 
 #include "../core/plugin.hpp"
+#include "platformmenu.hpp"
 
 #ifdef QS_WAYLAND_WLR_LAYERSHELL
 #include "wlr_layershell.hpp"
@@ -26,6 +27,8 @@ class WaylandPlugin: public QuickshellPlugin {
 		return isWayland;
 	}
 
+	void init() override { installPlatformMenuHook(); }
+
 	void registerTypes() override {
 #ifdef QS_WAYLAND_WLR_LAYERSHELL
 		qmlRegisterType<WaylandPanelInterface>("Quickshell._WaylandOverlay", 1, 0, "PanelWindow");

src/wayland/platformmenu.cpp

@@ -0,0 +1,32 @@
+#include "platformmenu.hpp"
+
+#include <private/qwayland-xdg-shell.h>
+#include <qmargins.h>
+#include <qwindow.h>
+
+#include "../core/platformmenu.hpp"
+
+using namespace qs::menu::platform;
+using namespace QtWayland;
+
+// fixes positioning of submenus when hitting screen edges
+void platformMenuHook(PlatformMenuQMenu* menu) {
+	auto* window = menu->windowHandle();
+
+	auto constraintAdjustment = QtWayland::xdg_positioner::constraint_adjustment_flip_x
+	                          | QtWayland::xdg_positioner::constraint_adjustment_flip_y;
+
+	window->setProperty("_q_waylandPopupConstraintAdjustment", constraintAdjustment);
+
+	if (auto* containingMenu = menu->containingMenu) {
+		auto geom = containingMenu->actionGeometry(menu->menuAction());
+
+		// use the first action to find the offsets relative to the containing window
+		auto baseGeom = containingMenu->actionGeometry(containingMenu->actions().first());
+		geom += QMargins(0, baseGeom.top(), 0, baseGeom.top());
+
+		window->setProperty("_q_waylandPopupAnchorRect", geom);
+	}
+}
+
+void installPlatformMenuHook() { PlatformMenuEntry::registerCreationHook(&platformMenuHook); }

src/wayland/platformmenu.hpp

@@ -0,0 +1,3 @@
+#pragma once
+
+void installPlatformMenuHook();