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-rw-r--r--subprojects/shew/src/shew-window-exporter.c216
1 files changed, 216 insertions, 0 deletions
diff --git a/subprojects/shew/src/shew-window-exporter.c b/subprojects/shew/src/shew-window-exporter.c
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+/*
+ * Copyright © 2020 Red Hat, Inc
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors:
+ * Florian Müllner <fmuellner@gnome.org>
+ */
+
+#include "shew-window-exporter.h"
+
+#ifdef GDK_WINDOWING_X11
+#include <gdk/gdkx.h>
+#endif
+#ifdef GDK_WINDOWING_WAYLAND
+#include <gdk/gdkwayland.h>
+#endif
+
+struct _ShewWindowExporter
+{
+ GObject parent;
+
+ GtkWindow *window;
+};
+
+G_DEFINE_TYPE (ShewWindowExporter, shew_window_exporter, G_TYPE_OBJECT)
+
+enum
+{
+ PROP_0,
+
+ PROP_WINDOW,
+};
+
+ShewWindowExporter *
+shew_window_exporter_new (GtkWindow *window)
+{
+ return g_object_new (SHEW_TYPE_WINDOW_EXPORTER,
+ "window", window,
+ NULL);
+}
+
+#ifdef GDK_WINDOWING_WAYLAND
+static void
+wayland_window_exported (GdkWindow *window,
+ const char *handle,
+ gpointer user_data)
+{
+ g_autoptr (GTask) task = user_data;
+
+ g_task_return_pointer (task, g_strdup_printf ("wayland:%s", handle), g_free);
+}
+#endif
+
+void
+shew_window_exporter_export (ShewWindowExporter *exporter,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ g_autoptr (GTask) task = NULL;
+ GtkWidget *widget;
+
+ g_return_if_fail (SHEW_IS_WINDOW_EXPORTER (exporter));
+
+ if (exporter->window == NULL)
+ {
+ g_task_report_new_error (exporter, callback, user_data,
+ shew_window_exporter_export,
+ G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
+ "No window to export");
+ return;
+ }
+
+ task = g_task_new (exporter, NULL, callback, user_data);
+ g_task_set_source_tag (task, shew_window_exporter_export);
+
+ widget = GTK_WIDGET (exporter->window);
+
+#ifdef GDK_WINDOWING_X11
+ if (GDK_IS_X11_DISPLAY (gtk_widget_get_display (widget)))
+ {
+ GdkWindow *w = gtk_widget_get_window (widget);
+ guint32 xid = (guint32) gdk_x11_window_get_xid (w);
+
+ g_task_return_pointer (task, g_strdup_printf ("x11:%x", xid), g_free);
+ }
+#endif
+
+#ifdef GDK_WINDOWING_WAYLAND
+ if (GDK_IS_WAYLAND_DISPLAY (gtk_widget_get_display (widget)))
+ {
+ GdkWindow *w = gtk_widget_get_window (widget);
+ gdk_wayland_window_export_handle (w, wayland_window_exported,
+ g_steal_pointer (&task), NULL);
+ }
+#endif
+
+ if (task != NULL && !g_task_get_completed (task))
+ {
+ g_task_return_new_error (task, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
+ "Unsupported windowing system");
+ }
+}
+
+char *
+shew_window_exporter_export_finish (ShewWindowExporter *exporter,
+ GAsyncResult *result,
+ GError **error)
+{
+ g_return_val_if_fail (SHEW_IS_WINDOW_EXPORTER (exporter), NULL);
+ g_return_val_if_fail (g_async_result_is_tagged (result, shew_window_exporter_export), NULL);
+
+ return g_task_propagate_pointer (G_TASK (result), error);
+}
+
+void
+shew_window_exporter_unexport (ShewWindowExporter *exporter)
+{
+ GtkWidget *widget;
+
+ g_return_if_fail (SHEW_IS_WINDOW_EXPORTER (exporter));
+
+ widget = GTK_WIDGET (exporter->window);
+
+#ifdef GDK_WINDOWING_WAYLAND
+ if (GDK_IS_WAYLAND_DISPLAY (gtk_widget_get_display (widget)))
+ {
+ GdkWindow *w = gtk_widget_get_window (widget);
+ gdk_wayland_window_unexport_handle (w);
+ }
+#endif
+}
+
+static void
+shew_window_exporter_dispose (GObject *object)
+{
+ ShewWindowExporter *exporter = SHEW_WINDOW_EXPORTER (object);
+
+ g_clear_object (&exporter->window);
+
+ G_OBJECT_CLASS (shew_window_exporter_parent_class)->dispose (object);
+}
+
+static void
+shew_window_exporter_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ ShewWindowExporter *exporter = SHEW_WINDOW_EXPORTER (object);
+
+ switch (prop_id)
+ {
+ case PROP_WINDOW:
+ g_set_object (&exporter->window, g_value_get_object (value));
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ }
+}
+
+static void
+shew_window_exporter_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ ShewWindowExporter *exporter = SHEW_WINDOW_EXPORTER (object);
+
+ switch (prop_id)
+ {
+ case PROP_WINDOW:
+ g_value_set_object (value, exporter->window);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ }
+}
+
+static void
+shew_window_exporter_init (ShewWindowExporter *exporter)
+{
+}
+
+static void
+shew_window_exporter_class_init (ShewWindowExporterClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+ object_class->get_property = shew_window_exporter_get_property;
+ object_class->set_property = shew_window_exporter_set_property;
+ object_class->dispose = shew_window_exporter_dispose;
+
+ g_object_class_install_property (object_class,
+ PROP_WINDOW,
+ g_param_spec_object ("window",
+ "GtkWindow",
+ "The GtkWindow to export",
+ GTK_TYPE_WINDOW,
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT_ONLY |
+ G_PARAM_STATIC_STRINGS));
+}