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-rw-r--r--libgimpwidgets/gimppickbutton-xdg.c152
1 files changed, 152 insertions, 0 deletions
diff --git a/libgimpwidgets/gimppickbutton-xdg.c b/libgimpwidgets/gimppickbutton-xdg.c
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+++ b/libgimpwidgets/gimppickbutton-xdg.c
@@ -0,0 +1,152 @@
+/* LIBGIMP - The GIMP Library
+ * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
+ *
+ * gimppickbutton-xdg.c
+ * Copyright (C) 2021 Niels De Graef <nielsdegraef@gmail.com>
+ *
+ * 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
+ * Library 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
+ * <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpcolor/gimpcolor.h"
+
+#include "gimpwidgetstypes.h"
+#include "gimppickbutton.h"
+#include "gimppickbutton-default.h"
+#include "gimppickbutton-xdg.h"
+
+#include "libgimp/libgimp-intl.h"
+
+gboolean
+_gimp_pick_button_xdg_available (void)
+{
+ GDBusProxy *proxy = NULL;
+
+ proxy = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SESSION,
+ G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START,
+ NULL,
+ "org.freedesktop.portal.Desktop",
+ "/org/freedesktop/portal/desktop",
+ "org.freedesktop.portal.Screenshot",
+ NULL, NULL);
+
+ if (proxy)
+ {
+ GError *error = NULL;
+
+ g_dbus_proxy_call_sync (proxy, "org.freedesktop.DBus.Peer.Ping",
+ NULL,
+ G_DBUS_CALL_FLAGS_NONE,
+ -1, NULL, &error);
+ if (! error)
+ return TRUE;
+
+ g_clear_error (&error);
+
+ g_object_unref (proxy);
+ proxy = NULL;
+ }
+
+ return FALSE;
+}
+
+static void
+pick_color_xdg_dbus_signal (GDBusProxy *proxy,
+ gchar *sender_name,
+ gchar *signal_name,
+ GVariant *parameters,
+ GimpPickButton *button)
+{
+ if (g_strcmp0 (signal_name, "Response") == 0)
+ {
+ GVariant *results;
+ guint32 response;
+
+ g_variant_get (parameters, "(u@a{sv})",
+ &response,
+ &results);
+
+ /* Possible values:
+ * 0: Success, the request is carried out
+ * 1: The user cancelled the interaction
+ * 2: The user interaction was ended in some other way
+ * Cf. https://github.com/flatpak/xdg-desktop-portal/blob/master/data/org.freedesktop.portal.Request.xml
+ */
+ if (response == 0)
+ {
+ GimpRGB color;
+
+ if (g_variant_lookup (results, "color", "(ddd)", &color.r, &color.g, &color.b))
+ {
+ g_signal_emit_by_name (button, "color-picked", &color);
+ }
+ }
+
+ g_variant_unref (results);
+ /* Quit anyway. */
+ gtk_main_quit ();
+ }
+}
+
+/* entry point to this file, called from gimppickbutton.c */
+void
+_gimp_pick_button_xdg_pick (GimpPickButton *button)
+{
+ GDBusProxy *proxy = NULL;
+ GVariant *retval = NULL;
+ gchar *opath = NULL;
+
+ proxy = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SESSION,
+ G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START,
+ NULL,
+ "org.freedesktop.portal.Desktop",
+ "/org/freedesktop/portal/desktop",
+ "org.freedesktop.portal.Screenshot",
+ NULL, NULL);
+ if (!proxy)
+ {
+ return;
+ }
+
+ retval = g_dbus_proxy_call_sync (proxy, "PickColor",
+ g_variant_new ("(sa{sv})", "", NULL),
+ G_DBUS_CALL_FLAGS_NONE,
+ -1, NULL, NULL);
+ g_clear_object (&proxy);
+ if (retval)
+ {
+ g_variant_get (retval, "(o)", &opath);
+ g_variant_unref (retval);
+ }
+
+ if (opath)
+ {
+ GDBusProxy *proxy2 = NULL;
+
+ proxy2 = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SESSION,
+ G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START,
+ NULL,
+ "org.freedesktop.portal.Desktop",
+ opath,
+ "org.freedesktop.portal.Request",
+ NULL, NULL);
+ g_signal_connect (proxy2, "g-signal",
+ G_CALLBACK (pick_color_xdg_dbus_signal),
+ button);
+
+ gtk_main ();
+ g_object_unref (proxy2);
+ g_free (opath);
+ }
+}