diff options
Diffstat (limited to 'src/ido-menu-item.c')
| -rw-r--r-- | src/ido-menu-item.c | 378 |
1 files changed, 378 insertions, 0 deletions
diff --git a/src/ido-menu-item.c b/src/ido-menu-item.c new file mode 100644 index 0000000..391f0df --- /dev/null +++ b/src/ido-menu-item.c @@ -0,0 +1,378 @@ +/* + * 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 "ido-menu-item.h" + +struct _IdoMenuItemPrivate +{ + GActionGroup *action_group; + gchar *action; + GVariant *target; + + GtkWidget *icon; + GtkWidget *label; + + gboolean has_indicator; + gboolean in_set_active; +}; + +enum +{ + PROP_0, + PROP_MENU_ITEM, + PROP_ACTION_GROUP, + NUM_PROPERTIES +}; + +static GParamSpec *properties[NUM_PROPERTIES]; + +G_DEFINE_TYPE (IdoMenuItem, ido_menu_item, GTK_TYPE_CHECK_MENU_ITEM); + +static void +ido_menu_item_constructed (GObject *object) +{ + IdoMenuItemPrivate *priv = IDO_MENU_ITEM (object)->priv; + GtkWidget *grid; + + priv->icon = g_object_ref (gtk_image_new ()); + + priv->label = g_object_ref (gtk_label_new ("")); + + grid = gtk_grid_new (); + gtk_grid_attach (GTK_GRID (grid), priv->icon, 0, 0, 1, 1); + gtk_grid_attach (GTK_GRID (grid), priv->label, 1, 0, 1, 1); + + gtk_container_add (GTK_CONTAINER (object), grid); + gtk_widget_show_all (grid); + + G_OBJECT_CLASS (ido_menu_item_parent_class)->constructed (object); +} + +static void +ido_menu_item_set_active (IdoMenuItem *self, + gboolean active) +{ + /* HACK gtk_check_menu_item_set_active calls gtk_menu_item_activate. + * Make sure our activate handler doesn't toggle the action as a + * result of calling this function. */ + + self->priv->in_set_active = TRUE; + gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (self), active); + self->priv->in_set_active = FALSE; +} + +static void +ido_menu_item_set_has_indicator (IdoMenuItem *self, + gboolean has_indicator) +{ + if (has_indicator == self->priv->has_indicator) + return; + + self->priv->has_indicator = has_indicator; + + gtk_widget_queue_resize (GTK_WIDGET (self)); +} + +static void +ido_menu_item_set_state (IdoMenuItem *self, + GVariant *state) +{ + IdoMenuItemPrivate *priv = self->priv; + + if (priv->target) + { + ido_menu_item_set_has_indicator (self, TRUE); + gtk_check_menu_item_set_draw_as_radio (GTK_CHECK_MENU_ITEM (self), TRUE); + ido_menu_item_set_active (self, g_variant_equal (priv->target, state)); + } + else if (g_variant_is_of_type (state, G_VARIANT_TYPE_BOOLEAN)) + { + ido_menu_item_set_has_indicator (self, TRUE); + gtk_check_menu_item_set_draw_as_radio (GTK_CHECK_MENU_ITEM (self), FALSE); + ido_menu_item_set_active (self, g_variant_get_boolean (state)); + } + else + { + ido_menu_item_set_has_indicator (self, FALSE); + } +} + +static void +ido_menu_item_set_action_name (IdoMenuItem *self, + const gchar *action_name) +{ + IdoMenuItemPrivate *priv = self->priv; + gboolean enabled = FALSE; + GVariant *state; + const GVariantType *param_type; + + if (priv->action != NULL) + g_free (priv->action); + + priv->action = g_strdup (action_name); + + if (priv->action_group != NULL && priv->action != NULL && + g_action_group_query_action (priv->action_group, priv->action, + &enabled, ¶m_type, NULL, NULL, &state)) + { + gtk_widget_set_sensitive (GTK_WIDGET (self), enabled); + ido_menu_item_set_state (self, state); + + if (state) + g_variant_unref (state); + } + else + { + ido_menu_item_set_active (self, FALSE); + gtk_widget_set_sensitive (GTK_WIDGET (self), FALSE); + ido_menu_item_set_has_indicator (self, FALSE); + } +} + +static void +ido_menu_item_action_added (GActionGroup *action_group, + gchar *action_name, + gpointer user_data) +{ + IdoMenuItem *self = user_data; + + if (g_strcmp0 (self->priv->action, action_name) == 0) + ido_menu_item_set_action_name (self, action_name); +} + +static void +ido_menu_item_action_removed (GActionGroup *action_group, + gchar *action_name, + gpointer user_data) +{ + IdoMenuItem *self = user_data; + + if (g_strcmp0 (self->priv->action, action_name) == 0) + { + gtk_widget_set_sensitive (GTK_WIDGET (self), FALSE); + } +} + +static void +ido_menu_item_action_enabled_changed (GActionGroup *action_group, + gchar *action_name, + gboolean enabled, + gpointer user_data) +{ + IdoMenuItem *self = user_data; + + if (g_strcmp0 (self->priv->action, action_name) == 0) + gtk_widget_set_sensitive (GTK_WIDGET (self), enabled); +} + +static void +ido_menu_item_action_state_changed (GActionGroup *action_group, + gchar *action_name, + GVariant *value, + gpointer user_data) +{ + IdoMenuItem *self = user_data; + + if (g_strcmp0 (self->priv->action, action_name) == 0) + ido_menu_item_set_state (self, value); +} + +static void +ido_menu_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec) +{ + IdoMenuItem *self = IDO_MENU_ITEM (object); + + switch (property_id) + { + case PROP_MENU_ITEM: + ido_menu_item_set_menu_item (self, G_MENU_ITEM (g_value_get_object (value))); + break; + + case PROP_ACTION_GROUP: + ido_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 +ido_menu_item_dispose (GObject *object) +{ + IdoMenuItem *self = IDO_MENU_ITEM (object); + + if (self->priv->action_group) + ido_menu_item_set_action_group (self, NULL); + + g_clear_object (&self->priv->icon); + g_clear_object (&self->priv->label); + + if (self->priv->target) + g_variant_unref (self->priv->target); + + G_OBJECT_CLASS (ido_menu_item_parent_class)->dispose (object); +} + +static void +ido_menu_item_finalize (GObject *object) +{ + IdoMenuItemPrivate *priv = IDO_MENU_ITEM (object)->priv; + + g_free (priv->action); + + G_OBJECT_CLASS (ido_menu_item_parent_class)->finalize (object); +} + +static void +ido_menu_item_activate (GtkMenuItem *item) +{ + IdoMenuItemPrivate *priv = IDO_MENU_ITEM (item)->priv; + + /* see ido_menu_item_set_active */ + if (!priv->in_set_active && priv->action && priv->action_group) + g_action_group_activate_action (priv->action_group, priv->action, priv->target); + + GTK_MENU_ITEM_CLASS (ido_menu_item_parent_class)->activate (item); +} + +static void +ido_menu_item_draw_indicator (GtkCheckMenuItem *item, + cairo_t *cr) +{ + IdoMenuItem *self = IDO_MENU_ITEM (item); + + if (self->priv->has_indicator) + GTK_CHECK_MENU_ITEM_CLASS (ido_menu_item_parent_class) + ->draw_indicator (item, cr); +} + +static void +ido_menu_item_class_init (IdoMenuItemClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + GtkMenuItemClass *menu_item_class = GTK_MENU_ITEM_CLASS (klass); + GtkCheckMenuItemClass *check_class = GTK_CHECK_MENU_ITEM_CLASS (klass); + + g_type_class_add_private (klass, sizeof (IdoMenuItemPrivate)); + + object_class->constructed = ido_menu_item_constructed; + object_class->set_property = ido_menu_set_property; + object_class->dispose = ido_menu_item_dispose; + object_class->finalize = ido_menu_item_finalize; + + menu_item_class->activate = ido_menu_item_activate; + + check_class->draw_indicator = ido_menu_item_draw_indicator; + + 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 +ido_menu_item_init (IdoMenuItem *self) +{ + self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self, + IDO_TYPE_MENU_ITEM, + IdoMenuItemPrivate); +} + +void +ido_menu_item_set_menu_item (IdoMenuItem *self, + GMenuItem *menuitem) +{ + gchar *iconstr = NULL; + GIcon *icon = NULL; + gchar *label; + gchar *action = NULL; + + if (g_menu_item_get_attribute (menuitem, "x-canonical-icon", "s", &iconstr)) + { + GError *error; + + icon = g_icon_new_for_string (iconstr, &error); + if (icon == NULL) + { + g_warning ("unable to set icon: %s", error->message); + g_error_free (error); + } + g_free (iconstr); + } + gtk_image_set_from_gicon (GTK_IMAGE (self->priv->icon), icon, GTK_ICON_SIZE_MENU); + + g_menu_item_get_attribute (menuitem, "label", "s", &label); + gtk_label_set_label (GTK_LABEL (self->priv->label), label ? label : ""); + + self->priv->target = g_menu_item_get_attribute_value (menuitem, "target", NULL); + + g_menu_item_get_attribute (menuitem, "action", "s", &action); + ido_menu_item_set_action_name (self, action); + + if (icon) + g_object_unref (icon); + g_free (label); + g_free (action); +} + +void +ido_menu_item_set_action_group (IdoMenuItem *self, + GActionGroup *action_group) +{ + IdoMenuItemPrivate *priv = self->priv; + + if (priv->action_group != NULL) + { + g_signal_handlers_disconnect_by_func (priv->action_group, ido_menu_item_action_added, self); + g_signal_handlers_disconnect_by_func (priv->action_group, ido_menu_item_action_removed, self); + g_signal_handlers_disconnect_by_func (priv->action_group, ido_menu_item_action_enabled_changed, self); + g_signal_handlers_disconnect_by_func (priv->action_group, ido_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 (ido_menu_item_action_added), self); + g_signal_connect (priv->action_group, "action-removed", + G_CALLBACK (ido_menu_item_action_removed), self); + g_signal_connect (priv->action_group, "action-enabled-changed", + G_CALLBACK (ido_menu_item_action_enabled_changed), self); + g_signal_connect (priv->action_group, "action-state-changed", + G_CALLBACK (ido_menu_item_action_state_changed), self); + } +} |