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authorMatthias Clasen <mclasen@redhat.com>2018-07-26 18:50:03 -0400
committerMatthias Clasen <mclasen@redhat.com>2018-07-27 14:23:20 -0400
commit16171a232aaef8f9c1abf678cac55f1636617b20 (patch)
tree6f70cbe1a2b38c0f65c18366c9aa59a5c2af9018 /gtk/gtkcolorpickershell.c
parent031b5cad46e31d8093f671923fe32af41178e93a (diff)
downloadgtk+-16171a232aaef8f9c1abf678cac55f1636617b20.tar.gz
Add a color picker implementation for gnome-shell
This adds a GtkColorPicker implementation that talks to gnome-shell to get a color.
Diffstat (limited to 'gtk/gtkcolorpickershell.c')
-rw-r--r--gtk/gtkcolorpickershell.c183
1 files changed, 183 insertions, 0 deletions
diff --git a/gtk/gtkcolorpickershell.c b/gtk/gtkcolorpickershell.c
new file mode 100644
index 0000000000..d465e0ab5e
--- /dev/null
+++ b/gtk/gtkcolorpickershell.c
@@ -0,0 +1,183 @@
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 2018, Red Hat, Inc
+ *
+ * This library 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/>.
+ */
+
+#include "config.h"
+
+#include "gtkcolorpickershellprivate.h"
+#include <gio/gio.h>
+
+struct _GtkColorPickerShell
+{
+ GObject parent_instance;
+
+ GDBusProxy *shell_proxy;
+ GTask *task;
+};
+
+struct _GtkColorPickerShellClass
+{
+ GObjectClass parent_class;
+};
+
+static GInitableIface *initable_parent_iface;
+static void gtk_color_picker_shell_initable_iface_init (GInitableIface *iface);
+static void gtk_color_picker_shell_iface_init (GtkColorPickerInterface *iface);
+
+G_DEFINE_TYPE_WITH_CODE (GtkColorPickerShell, gtk_color_picker_shell, G_TYPE_OBJECT,
+ G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE, gtk_color_picker_shell_initable_iface_init)
+ G_IMPLEMENT_INTERFACE (GTK_TYPE_COLOR_PICKER, gtk_color_picker_shell_iface_init))
+
+static gboolean
+gtk_color_picker_shell_initable_init (GInitable *initable,
+ GCancellable *cancellable,
+ GError **error)
+{
+ GtkColorPickerShell *picker = GTK_COLOR_PICKER_SHELL (initable);
+ char *owner;
+
+ picker->shell_proxy = g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SESSION,
+ G_DBUS_PROXY_FLAGS_NONE,
+ NULL,
+ "org.gnome.Shell.Screenshot",
+ "/org/gnome/Shell/Screenshot",
+ "org.gnome.Shell.Screenshot",
+ NULL,
+ error);
+
+ if (picker->shell_proxy == NULL)
+ {
+ g_debug ("Failed to create shell screenshot proxy");
+ return FALSE;
+ }
+
+ owner = g_dbus_proxy_get_name_owner (picker->shell_proxy);
+ if (owner == NULL)
+ {
+ g_debug ("org.gnome.Shell.Screenshot not provided");
+ g_clear_object (&picker->shell_proxy);
+ return FALSE;
+ }
+ g_free (owner);
+
+ return TRUE;
+}
+
+static void
+gtk_color_picker_shell_initable_iface_init (GInitableIface *iface)
+{
+ initable_parent_iface = g_type_interface_peek_parent (iface);
+ iface->init = gtk_color_picker_shell_initable_init;
+}
+
+static void
+gtk_color_picker_shell_init (GtkColorPickerShell *picker)
+{
+}
+
+static void
+gtk_color_picker_shell_finalize (GObject *object)
+{
+ GtkColorPickerShell *picker = GTK_COLOR_PICKER_SHELL (object);
+
+ g_clear_object (&picker->shell_proxy);
+
+ G_OBJECT_CLASS (gtk_color_picker_shell_parent_class)->finalize (object);
+}
+
+static void
+gtk_color_picker_shell_class_init (GtkColorPickerShellClass *class)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (class);
+
+ object_class->finalize = gtk_color_picker_shell_finalize;
+}
+
+GtkColorPicker *
+gtk_color_picker_shell_new (void)
+{
+ return GTK_COLOR_PICKER (g_initable_new (GTK_TYPE_COLOR_PICKER_SHELL, NULL, NULL, NULL));
+}
+
+static void
+color_picked (GObject *source,
+ GAsyncResult *res,
+ gpointer data)
+{
+ GtkColorPickerShell *picker = GTK_COLOR_PICKER_SHELL (data);
+ GError *error = NULL;
+ GVariant *ret;
+
+ ret = g_dbus_proxy_call_finish (picker->shell_proxy, res, &error);
+
+ if (ret == NULL)
+ {
+ g_task_return_error (picker->task, error);
+ }
+ else
+ {
+ GdkRGBA c;
+
+ c.alpha = 1;
+ if (!g_variant_lookup (ret, "color", "(ddd)", &c.red, &c.green, &c.blue))
+ g_task_return_new_error (picker->task, G_IO_ERROR, G_IO_ERROR_FAILED, "No color received");
+ else
+ g_task_return_pointer (picker->task, gdk_rgba_copy (&c), (GDestroyNotify)gdk_rgba_free);
+
+ g_variant_unref (ret);
+ }
+
+ g_clear_object (&picker->task);
+}
+
+static void
+gtk_color_picker_shell_pick (GtkColorPicker *cp,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ GtkColorPickerShell *picker = GTK_COLOR_PICKER_SHELL (cp);
+
+ if (picker->task)
+ return;
+
+ picker->task = g_task_new (picker, NULL, callback, user_data);
+
+ g_dbus_proxy_call (picker->shell_proxy,
+ "PickColor",
+ NULL,
+ 0,
+ -1,
+ NULL,
+ color_picked,
+ picker);
+}
+
+static GdkRGBA *
+gtk_color_picker_shell_pick_finish (GtkColorPicker *cp,
+ GAsyncResult *res,
+ GError **error)
+{
+ g_return_val_if_fail (g_task_is_valid (res, cp), NULL);
+
+ return g_task_propagate_pointer (G_TASK (res), error);
+}
+
+static void
+gtk_color_picker_shell_iface_init (GtkColorPickerInterface *iface)
+{
+ iface->pick = gtk_color_picker_shell_pick;
+ iface->pick_finish = gtk_color_picker_shell_pick_finish;
+}