Using GTK file dialog when it is available.

Should work both with GTK 2 and GTK 3.

1 files changed, 118 insertions, 0 deletions

diff --git a/Telegram/SourceFiles/platform/linux/linux_gdk_helper.cpp b/Telegram/SourceFiles/platform/linux/linux_gdk_helper.cpp
new file mode 100644
index 0000000000..80d29af2d6
--- /dev/null
+++ b/Telegram/SourceFiles/platform/linux/linux_gdk_helper.cpp
@@ -0,0 +1,118 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop version of Telegram messaging app, see https://telegram.org
+
+Telegram Desktop is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+It is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+In addition, as a special exception, the copyright holders give permission
+to link the code of portions of this program with the OpenSSL library.
+
+Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
+Copyright (c) 2014-2016 John Preston, https://desktop.telegram.org
+*/
+#include "stdafx.h"
+#include "platform/linux/linux_gdk_helper.h"
+
+#include "platform/linux/linux_libs.h"
+
+extern "C" {
+#undef signals
+#include <gdk/gdkx.h>
+#define signals public
+} // extern "C"
+
+namespace Platform {
+namespace internal {
+
+enum class GtkLoaded {
+	GtkNone,
+	Gtk2,
+	Gtk3,
+};
+
+GtkLoaded gdk_helper_loaded = GtkLoaded::GtkNone;
+
+// To be able to compile with gtk-3.0 headers as well
+#define GdkDrawable GdkWindow
+
+// Gtk 2
+using f_gdk_x11_drawable_get_xdisplay = Display*(*)(GdkDrawable*);
+f_gdk_x11_drawable_get_xdisplay gdk_x11_drawable_get_xdisplay = nullptr;
+
+using f_gdk_x11_drawable_get_xid = XID(*)(GdkDrawable*);
+f_gdk_x11_drawable_get_xid gdk_x11_drawable_get_xid = nullptr;
+
+// Gtk 3
+
+// To be able to compile with gtk-2.0 headers as well
+#ifndef GDK_TYPE_X11_WINDOW
+#define GDK_TYPE_X11_WINDOW (gdk_x11_window_get_type())
+#endif // GDK_TYPE_X11_WINDOW
+
+#ifndef GDK_IS_X11_WINDOW
+#define GDK_IS_X11_WINDOW(object) (G_TYPE_CHECK_INSTANCE_TYPE((object), GDK_TYPE_X11_WINDOW))
+#endif // GDK_IS_X11_WINDOW
+
+using f_gdk_x11_window_get_type = GType (*)(void);
+f_gdk_x11_window_get_type gdk_x11_window_get_type = nullptr;
+
+using f_gdk_window_get_display = GdkDisplay*(*)(GdkWindow *window);
+f_gdk_window_get_display gdk_window_get_display = nullptr;
+
+using f_gdk_x11_display_get_xdisplay = Display*(*)(GdkDisplay *display);
+f_gdk_x11_display_get_xdisplay gdk_x11_display_get_xdisplay = nullptr;
+
+using f_gdk_x11_window_get_xid = Window(*)(GdkWindow *window);
+f_gdk_x11_window_get_xid gdk_x11_window_get_xid = nullptr;
+
+bool GdkHelperLoadGtk2(QLibrary &lib) {
+	if (!Libs::load(lib, "gdk_x11_drawable_get_xdisplay", gdk_x11_drawable_get_xdisplay)) return false;
+	if (!Libs::load(lib, "gdk_x11_drawable_get_xid", gdk_x11_drawable_get_xid)) return false;
+	return true;
+}
+
+bool GdkHelperLoadGtk3(QLibrary &lib) {
+	if (!Libs::load(lib, "gdk_x11_window_get_type", gdk_x11_window_get_type)) return false;
+	if (!Libs::load(lib, "gdk_window_get_display", gdk_window_get_display)) return false;
+	if (!Libs::load(lib, "gdk_x11_display_get_xdisplay", gdk_x11_display_get_xdisplay)) return false;
+	if (!Libs::load(lib, "gdk_x11_window_get_xid", gdk_x11_window_get_xid)) return false;
+	return true;
+}
+
+void GdkHelperLoad(QLibrary &lib) {
+	gdk_helper_loaded = GtkLoaded::GtkNone;
+	if (GdkHelperLoadGtk2(lib)) {
+		gdk_helper_loaded = GtkLoaded::Gtk2;
+	} else if (GdkHelperLoadGtk3(lib)) {
+		gdk_helper_loaded = GtkLoaded::Gtk3;
+	}
+}
+
+bool GdkHelperLoaded() {
+	return gdk_helper_loaded != GtkLoaded::GtkNone;
+}
+
+void XSetTransientForHint(GdkWindow *window, quintptr winId) {
+	if (gdk_helper_loaded == GtkLoaded::Gtk2) {
+		::XSetTransientForHint(gdk_x11_drawable_get_xdisplay(window),
+							   gdk_x11_drawable_get_xid(window),
+							   winId);
+	} else if (gdk_helper_loaded == GtkLoaded::Gtk3) {
+		if (GDK_IS_X11_WINDOW(window)) {
+			::XSetTransientForHint(gdk_x11_display_get_xdisplay(gdk_window_get_display(window)),
+								   gdk_x11_window_get_xid(window),
+								   winId);
+		}
+	}
+}
+
+} // namespace internal
+} // namespace Platform