Build wayland support optionally

Telegram/SourceFiles/platform/linux/linux_wayland_integration.cpp

@@ -0,0 +1,116 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "platform/linux/linux_wayland_integration.h"
+
+#include "base/platform/base_platform_info.h"
+
+#include <QtGui/QWindow>
+
+#include <private/qwaylanddisplay_p.h>
+#include <private/qwaylandwindow_p.h>
+#include <private/qwaylandshellsurface_p.h>
+
+#if QT_VERSION < QT_VERSION_CHECK(5, 13, 0) && !defined DESKTOP_APP_QT_PATCHED
+#include <wayland-client.h>
+#endif // Qt < 5.13 && !DESKTOP_APP_QT_PATCHED
+
+using QtWaylandClient::QWaylandWindow;
+
+namespace Platform {
+namespace internal {
+
+namespace {
+
+#if QT_VERSION < QT_VERSION_CHECK(5, 13, 0) && !defined DESKTOP_APP_QT_PATCHED
+enum wl_shell_surface_resize WlResizeFromEdges(Qt::Edges edges) {
+	if (edges == (Qt::TopEdge | Qt::LeftEdge))
+		return WL_SHELL_SURFACE_RESIZE_TOP_LEFT;
+	if (edges == Qt::TopEdge)
+		return WL_SHELL_SURFACE_RESIZE_TOP;
+	if (edges == (Qt::TopEdge | Qt::RightEdge))
+		return WL_SHELL_SURFACE_RESIZE_TOP_RIGHT;
+	if (edges == Qt::RightEdge)
+		return WL_SHELL_SURFACE_RESIZE_RIGHT;
+	if (edges == (Qt::RightEdge | Qt::BottomEdge))
+		return WL_SHELL_SURFACE_RESIZE_BOTTOM_RIGHT;
+	if (edges == Qt::BottomEdge)
+		return WL_SHELL_SURFACE_RESIZE_BOTTOM;
+	if (edges == (Qt::BottomEdge | Qt::LeftEdge))
+		return WL_SHELL_SURFACE_RESIZE_BOTTOM_LEFT;
+	if (edges == Qt::LeftEdge)
+		return WL_SHELL_SURFACE_RESIZE_LEFT;
+
+	return WL_SHELL_SURFACE_RESIZE_NONE;
+}
+#endif // Qt < 5.13 && !DESKTOP_APP_QT_PATCHED
+
+} // namespace
+
+WaylandIntegration::WaylandIntegration() {
+}
+
+WaylandIntegration *WaylandIntegration::Instance() {
+	static WaylandIntegration instance;
+	return &instance;
+}
+
+bool WaylandIntegration::startMove(QWindow *window) {
+	// There are startSystemMove on Qt 5.15
+#if QT_VERSION < QT_VERSION_CHECK(5, 15, 0) && !defined DESKTOP_APP_QT_PATCHED
+	if (const auto waylandWindow = static_cast<QWaylandWindow*>(
+		window->handle())) {
+		if (const auto seat = waylandWindow->display()->lastInputDevice()) {
+			if (const auto shellSurface = waylandWindow->shellSurface()) {
+				return shellSurface->move(seat);
+			}
+		}
+	}
+#endif // Qt < 5.15 && !DESKTOP_APP_QT_PATCHED
+
+	return false;
+}
+
+bool WaylandIntegration::startResize(QWindow *window, Qt::Edges edges) {
+	// There are startSystemResize on Qt 5.15
+#if QT_VERSION < QT_VERSION_CHECK(5, 15, 0) && !defined DESKTOP_APP_QT_PATCHED
+	if (const auto waylandWindow = static_cast<QWaylandWindow*>(
+		window->handle())) {
+		if (const auto seat = waylandWindow->display()->lastInputDevice()) {
+			if (const auto shellSurface = waylandWindow->shellSurface()) {
+#if QT_VERSION >= QT_VERSION_CHECK(5, 13, 0)
+				shellSurface->resize(seat, edges);
+				return true;
+#else // Qt >= 5.13
+				shellSurface->resize(seat, WlResizeFromEdges(edges));
+				return true;
+#endif // Qt < 5.13
+			}
+		}
+	}
+#endif // Qt < 5.15 && !DESKTOP_APP_QT_PATCHED
+
+	return false;
+}
+
+bool WaylandIntegration::showWindowMenu(QWindow *window) {
+#if QT_VERSION >= QT_VERSION_CHECK(5, 13, 0) || defined DESKTOP_APP_QT_PATCHED
+	if (const auto waylandWindow = static_cast<QWaylandWindow*>(
+		window->handle())) {
+		if (const auto seat = waylandWindow->display()->lastInputDevice()) {
+			if (const auto shellSurface = waylandWindow->shellSurface()) {
+				return shellSurface->showWindowMenu(seat);
+			}
+		}
+	}
+#endif // Qt >= 5.13 || DESKTOP_APP_QT_PATCHED
+
+	return false;
+}
+
+} // namespace internal
+} // namespace Platform