Add IdoApplicationMenuItem

A menu item representing an application. It can show whether the application is
running or not (based on action state).

1 files changed, 195 insertions, 0 deletions

diff --git a/src/idoapplicationmenuitem.c b/src/idoapplicationmenuitem.c
new file mode 100644
index 0000000..c5910cf
--- /dev/null
+++ b/src/idoapplicationmenuitem.c
@@ -0,0 +1,195 @@
+/*
+ * Copyright 2013 Canonical Ltd.
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 3, as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranties of
+ * MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
+ * PURPOSE.  See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors:
+ *     Lars Uebernickel <lars.uebernickel@canonical.com>
+ */
+
+#include "idoapplicationmenuitem.h"
+#include "idoactionhelper.h"
+
+typedef GtkMenuItemClass IdoApplicationMenuItemClass;
+
+struct _IdoApplicationMenuItem
+{
+  GtkMenuItem parent;
+
+  gboolean is_running;
+
+  GtkWidget *icon;
+  GtkWidget *label;
+};
+
+G_DEFINE_TYPE (IdoApplicationMenuItem, ido_application_menu_item, GTK_TYPE_MENU_ITEM);
+
+static void
+ido_application_menu_item_constructed (GObject *object)
+{
+  IdoApplicationMenuItem *item = IDO_APPLICATION_MENU_ITEM (object);
+  GtkWidget *grid;
+
+  item->icon = g_object_ref (gtk_image_new ());
+  gtk_widget_set_margin_right (item->icon, 6);
+
+  item->label = g_object_ref (gtk_label_new (""));
+
+  grid = gtk_grid_new ();
+  gtk_grid_attach (GTK_GRID (grid), item->icon, 0, 0, 1, 1);
+  gtk_grid_attach (GTK_GRID (grid), item->label, 1, 0, 1, 1);
+
+  gtk_container_add (GTK_CONTAINER (object), grid);
+  gtk_widget_show_all (grid);
+
+  G_OBJECT_CLASS (ido_application_menu_item_parent_class)->constructed (object);
+}
+
+static void
+ido_application_menu_item_dispose (GObject *object)
+{
+  IdoApplicationMenuItem *self = IDO_APPLICATION_MENU_ITEM (object);
+
+  g_clear_object (&self->icon);
+  g_clear_object (&self->label);
+
+  G_OBJECT_CLASS (ido_application_menu_item_parent_class)->dispose (object);
+}
+
+static gboolean
+ido_application_menu_item_draw (GtkWidget *widget,
+                                cairo_t   *cr)
+{
+  IdoApplicationMenuItem *item = IDO_APPLICATION_MENU_ITEM (widget);
+
+  GTK_WIDGET_CLASS (ido_application_menu_item_parent_class)->draw (widget, cr);
+
+  if (item->is_running)
+    {
+      const int arrow_width = 5;
+      const double half_arrow_height = 4.5;
+      GtkAllocation alloc;
+      GdkRGBA color;
+      double center;
+
+      gtk_widget_get_allocation (widget, &alloc);
+
+      gtk_style_context_get_color (gtk_widget_get_style_context (widget),
+                                   gtk_widget_get_state_flags (widget),
+                                   &color);
+      gdk_cairo_set_source_rgba (cr, &color);
+
+      center = alloc.height / 2 + 0.5;
+
+      cairo_move_to (cr, 0, center - half_arrow_height);
+      cairo_line_to (cr, 0, center + half_arrow_height);
+      cairo_line_to (cr, arrow_width, center);
+      cairo_close_path (cr);
+
+      cairo_fill (cr);
+    }
+
+  return FALSE;
+}
+
+void
+ido_application_menu_item_class_init (IdoApplicationMenuItemClass *klass)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (klass);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+  object_class->constructed = ido_application_menu_item_constructed;
+  object_class->dispose = ido_application_menu_item_dispose;
+
+  widget_class->draw = ido_application_menu_item_draw;
+}
+
+static void
+ido_application_menu_item_init (IdoApplicationMenuItem *self)
+{
+}
+
+static void
+ido_application_menu_item_set_label (IdoApplicationMenuItem *item,
+                                     const gchar            *label)
+{
+  gtk_label_set_label (GTK_LABEL (item->label), label);
+}
+
+static void
+ido_application_menu_item_set_icon (IdoApplicationMenuItem *item,
+                                    GIcon                  *icon)
+{
+  gtk_image_set_from_gicon (GTK_IMAGE (item->icon), icon, GTK_ICON_SIZE_MENU);
+}
+
+static void
+ido_application_menu_item_state_changed (IdoActionHelper *helper,
+                                         GVariant        *state,
+                                         gpointer         user_data)
+{
+  IdoApplicationMenuItem *item = user_data;
+
+  item->is_running = g_variant_get_boolean (state);
+  gtk_widget_queue_draw (GTK_WIDGET (item));
+}
+
+GtkMenuItem *
+ido_application_menu_item_new_from_model (GMenuItem    *menuitem,
+                                          GActionGroup *actions)
+{
+  GtkMenuItem *item;
+  gchar *label;
+  GVariant *serialized_icon;
+  gchar *action;
+
+  item = g_object_new (IDO_TYPE_APPLICATION_MENU_ITEM, NULL);
+
+  if (g_menu_item_get_attribute (menuitem, "label", "s", &label))
+    {
+      ido_application_menu_item_set_label (IDO_APPLICATION_MENU_ITEM (item), label);
+      g_free (label);
+    }
+
+  serialized_icon = g_menu_item_get_attribute_value (menuitem, "icon", NULL);
+  if (serialized_icon)
+    {
+      GIcon *icon;
+
+      icon = g_icon_deserialize (serialized_icon);
+      if (icon)
+        {
+          ido_application_menu_item_set_icon (IDO_APPLICATION_MENU_ITEM (item), icon);
+          g_object_unref (icon);
+        }
+
+      g_variant_unref (serialized_icon);
+    }
+
+  if (g_menu_item_get_attribute (menuitem, "action", "s", &action))
+    {
+      IdoActionHelper *helper;
+
+      helper = ido_action_helper_new (GTK_WIDGET (item), actions, action, NULL);
+      g_signal_connect (helper, "action-state-changed",
+                        G_CALLBACK (ido_application_menu_item_state_changed), item);
+      g_signal_connect_object (item, "activate",
+                               G_CALLBACK (ido_action_helper_activate), helper,
+                               G_CONNECT_SWAPPED);
+      g_signal_connect_swapped (item, "destroy", G_CALLBACK (g_object_unref), helper);
+
+      g_free (action);
+    }
+
+  return item;
+}