diff options
Diffstat (limited to 'src/im-app-menu-item.c')
| -rw-r--r-- | src/im-app-menu-item.c | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/src/im-app-menu-item.c b/src/im-app-menu-item.c new file mode 100644 index 0000000..f4430be --- /dev/null +++ b/src/im-app-menu-item.c @@ -0,0 +1,305 @@ +/* + * Copyright 2012 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 "im-app-menu-item.h" + +struct _ImAppMenuItemPrivate +{ + GActionGroup *action_group; + gchar *action; + gboolean is_running; +}; + +enum +{ + PROP_0, + PROP_MENU_ITEM, + PROP_ACTION_GROUP, + NUM_PROPERTIES +}; + +static GParamSpec *properties[NUM_PROPERTIES]; + +G_DEFINE_TYPE (ImAppMenuItem, im_app_menu_item, GTK_TYPE_MENU_ITEM); + +static void +im_app_menu_item_set_action_name (ImAppMenuItem *self, + const gchar *action_name) +{ + ImAppMenuItemPrivate *priv = self->priv; + gboolean enabled = FALSE; + GVariant *state; + + if (priv->action != NULL) + g_free (priv->action); + + priv->action = g_strdup (action_name); + + priv->is_running = FALSE; + + if (priv->action_group != NULL && priv->action != NULL && + g_action_group_query_action (priv->action_group, priv->action, + &enabled, NULL, NULL, NULL, &state)) + { + if (state && g_variant_is_of_type (state, G_VARIANT_TYPE ("b"))) + priv->is_running = g_variant_get_boolean (state); + else + enabled = FALSE; + + if (state) + g_variant_unref (state); + } + + gtk_widget_set_sensitive (GTK_WIDGET (self), enabled); + gtk_widget_queue_draw (GTK_WIDGET (self)); +} + +static void +im_app_menu_item_action_added (GActionGroup *action_group, + gchar *action_name, + gpointer user_data) +{ + ImAppMenuItem *self = user_data; + + if (g_strcmp0 (self->priv->action, action_name) == 0) + im_app_menu_item_set_action_name (self, action_name); +} + +static void +im_app_menu_item_action_removed (GActionGroup *action_group, + gchar *action_name, + gpointer user_data) +{ + ImAppMenuItem *self = user_data; + + if (g_strcmp0 (self->priv->action, action_name) == 0) + { + gtk_widget_set_sensitive (GTK_WIDGET (self), FALSE); + self->priv->is_running = FALSE; + gtk_widget_queue_draw (GTK_WIDGET (self)); + } +} + +static void +im_app_menu_item_action_enabled_changed (GActionGroup *action_group, + gchar *action_name, + gboolean enabled, + gpointer user_data) +{ + ImAppMenuItem *self = user_data; + + if (g_strcmp0 (self->priv->action, action_name) == 0) + gtk_widget_set_sensitive (GTK_WIDGET (self), enabled); +} + +static void +im_app_menu_item_action_state_changed (GActionGroup *action_group, + gchar *action_name, + GVariant *value, + gpointer user_data) +{ + ImAppMenuItem *self = user_data; + + if (g_strcmp0 (self->priv->action, action_name) == 0) + { + g_return_if_fail (g_variant_is_of_type (value, G_VARIANT_TYPE ("b"))); + + self->priv->is_running = g_variant_get_boolean (value); + gtk_widget_queue_draw (GTK_WIDGET (self)); + } +} + +static void +im_app_menu_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec) +{ + ImAppMenuItem *self = IM_APP_MENU_ITEM (object); + + switch (property_id) + { + case PROP_MENU_ITEM: + im_app_menu_item_set_menu_item (self, G_MENU_ITEM (g_value_get_object (value))); + break; + + case PROP_ACTION_GROUP: + im_app_menu_item_set_action_group (self, G_ACTION_GROUP (g_value_get_object (value))); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + } +} + +static void +im_app_menu_item_dispose (GObject *object) +{ + ImAppMenuItem *self = IM_APP_MENU_ITEM (object); + + if (self->priv->action_group) + im_app_menu_item_set_action_group (self, NULL); + + G_OBJECT_CLASS (im_app_menu_item_parent_class)->dispose (object); +} + +static void +im_app_menu_item_finalize (GObject *object) +{ + ImAppMenuItemPrivate *priv = IM_APP_MENU_ITEM (object)->priv; + + g_free (priv->action); + + G_OBJECT_CLASS (im_app_menu_item_parent_class)->finalize (object); +} + +static gboolean +im_app_menu_item_draw (GtkWidget *widget, + cairo_t *cr) +{ + ImAppMenuItemPrivate *priv = IM_APP_MENU_ITEM (widget)->priv; + + GTK_WIDGET_CLASS (im_app_menu_item_parent_class)->draw (widget, cr); + + if (priv->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; +} + +static void +im_app_menu_item_activate (GtkMenuItem *item) +{ + ImAppMenuItemPrivate *priv = IM_APP_MENU_ITEM (item)->priv; + + if (priv->action && priv->action_group) + g_action_group_activate_action (priv->action_group, priv->action, NULL); +} + +static void +im_app_menu_item_class_init (ImAppMenuItemClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass); + GtkMenuItemClass *menu_item_class = GTK_MENU_ITEM_CLASS (klass); + + g_type_class_add_private (klass, sizeof (ImAppMenuItemPrivate)); + + object_class->set_property = im_app_menu_set_property; + object_class->dispose = im_app_menu_item_dispose; + object_class->finalize = im_app_menu_item_finalize; + + widget_class->draw = im_app_menu_item_draw; + + menu_item_class->activate = im_app_menu_item_activate; + + properties[PROP_MENU_ITEM] = g_param_spec_object ("menu-item", + "Menu item", + "The model GMenuItem for this menu item", + G_TYPE_MENU_ITEM, + G_PARAM_WRITABLE | + G_PARAM_STATIC_STRINGS); + + properties[PROP_ACTION_GROUP] = g_param_spec_object ("action-group", + "Action group", + "The action group associated with this menu item", + G_TYPE_ACTION_GROUP, + G_PARAM_WRITABLE | + G_PARAM_STATIC_STRINGS); + + g_object_class_install_properties (object_class, NUM_PROPERTIES, properties); +} + +static void +im_app_menu_item_init (ImAppMenuItem *self) +{ + self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self, + IM_TYPE_APP_MENU_ITEM, + ImAppMenuItemPrivate); +} + +void +im_app_menu_item_set_menu_item (ImAppMenuItem *self, + GMenuItem *menuitem) +{ + gchar *label; + gchar *action = NULL; + + g_menu_item_get_attribute (menuitem, "label", "s", &label); + gtk_menu_item_set_label (GTK_MENU_ITEM (self), label ? label : ""); + + g_menu_item_get_attribute (menuitem, "action", "s", &action); + im_app_menu_item_set_action_name (self, action); + + g_free (label); + g_free (action); +} + +void +im_app_menu_item_set_action_group (ImAppMenuItem *self, + GActionGroup *action_group) +{ + ImAppMenuItemPrivate *priv = self->priv; + + if (priv->action_group != NULL) + { + g_signal_handlers_disconnect_by_func (priv->action_group, im_app_menu_item_action_added, self); + g_signal_handlers_disconnect_by_func (priv->action_group, im_app_menu_item_action_removed, self); + g_signal_handlers_disconnect_by_func (priv->action_group, im_app_menu_item_action_enabled_changed, self); + g_signal_handlers_disconnect_by_func (priv->action_group, im_app_menu_item_action_state_changed, self); + + g_clear_object (&priv->action_group); + } + + if (action_group != NULL) + { + priv->action_group = g_object_ref (action_group); + + g_signal_connect (priv->action_group, "action-added", + G_CALLBACK (im_app_menu_item_action_added), self); + g_signal_connect (priv->action_group, "action-removed", + G_CALLBACK (im_app_menu_item_action_removed), self); + g_signal_connect (priv->action_group, "action-enabled-changed", + G_CALLBACK (im_app_menu_item_action_enabled_changed), self); + g_signal_connect (priv->action_group, "action-state-changed", + G_CALLBACK (im_app_menu_item_action_state_changed), self); + } +} |