From f6ce926719943751cf65cacde7fae050593eb2d6 Mon Sep 17 00:00:00 2001 From: Perberos Date: Wed, 9 Nov 2011 18:17:43 -0300 Subject: inicial --- shell/ev-navigation-action.c | 247 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 247 insertions(+) create mode 100644 shell/ev-navigation-action.c (limited to 'shell/ev-navigation-action.c') diff --git a/shell/ev-navigation-action.c b/shell/ev-navigation-action.c new file mode 100644 index 00000000..b34c3789 --- /dev/null +++ b/shell/ev-navigation-action.c @@ -0,0 +1,247 @@ +/* + * Copyright (C) 2003, 2004 Marco Pesenti Gritti + * Copyright (C) 2003, 2004 Christian Persch + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#include "config.h" + +#include +#include + +#include "ev-navigation-action.h" +#include "ev-navigation-action-widget.h" + + +enum +{ + WIDGET_ACTIVATE_LINK, + WIDGET_N_SIGNALS +}; + +static guint widget_signals[WIDGET_N_SIGNALS] = {0, }; + +struct _EvNavigationActionPrivate +{ + EvHistory *history; +}; + +static void ev_navigation_action_init (EvNavigationAction *action); +static void ev_navigation_action_class_init (EvNavigationActionClass *class); + +G_DEFINE_TYPE (EvNavigationAction, ev_navigation_action, GTK_TYPE_ACTION) + +#define MAX_LABEL_LENGTH 48 + +#define EV_NAVIGATION_ACTION_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_NAVIGATION_ACTION, EvNavigationActionPrivate)) + +static void +ev_navigation_action_history_changed (EvHistory *history, + gpointer data) +{ + EvNavigationAction *action = EV_NAVIGATION_ACTION (data); + + gtk_action_set_sensitive (GTK_ACTION (action), + ev_history_get_n_links (history) > 0); +} + +void +ev_navigation_action_set_history (EvNavigationAction *action, + EvHistory *history) +{ + action->priv->history = history; + + g_object_add_weak_pointer (G_OBJECT (action->priv->history), + (gpointer) &action->priv->history); + + g_signal_connect_object (history, "changed", + G_CALLBACK (ev_navigation_action_history_changed), + action, 0); +} + +static void +activate_menu_item_cb (GtkWidget *widget, EvNavigationAction *action) +{ + int index; + + g_return_if_fail (EV_IS_HISTORY (action->priv->history)); + + index = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (widget), "index")); + + if (action->priv->history) { + EvLink *link; + + link = ev_history_get_link_nth (action->priv->history, index); + + g_signal_emit (action, widget_signals[WIDGET_ACTIVATE_LINK], 0, link); + } +} + +static GtkWidget * +new_history_menu_item (EvNavigationAction *action, + EvLink *link, + int index) +{ + GtkLabel *label; + GtkWidget *item; + const char *title; + + title = ev_link_get_title (link); + item = gtk_image_menu_item_new_with_label (title); + label = GTK_LABEL (gtk_bin_get_child (GTK_BIN (item))); + gtk_label_set_use_markup (label, TRUE); + g_object_set_data (G_OBJECT (item), "index", + GINT_TO_POINTER (index)); + + gtk_label_set_ellipsize (label, PANGO_ELLIPSIZE_END); + gtk_label_set_max_width_chars (label, MAX_LABEL_LENGTH); + + g_signal_connect (item, "activate", + G_CALLBACK (activate_menu_item_cb), + action); + + gtk_widget_show (item); + + return item; +} + +static GtkWidget * +build_menu (EvNavigationAction *action) +{ + GtkMenuShell *menu; + GtkWidget *item; + EvLink *link; + EvHistory *history = action->priv->history; + int start, end, i; + + if (history == NULL || ev_history_get_n_links (history) <= 0) { + return NULL; + } + + menu = GTK_MENU_SHELL (gtk_menu_new ()); + + start = 0; + end = ev_history_get_n_links (history); + + for (i = start; i < end; i++) { + link = ev_history_get_link_nth (history, i); + item = new_history_menu_item (action, link, i); + gtk_menu_shell_prepend (menu, item); + } + + return GTK_WIDGET (menu); +} + +static void +menu_activated_cb (EvNavigationActionWidget *button, + EvNavigationAction *action) +{ + GtkWidget *menu; + + menu = build_menu (action); + ev_navigation_action_widget_set_menu (button, menu); +} + +static void +connect_proxy (GtkAction *action, GtkWidget *proxy) +{ + GtkWidget *menu; + + if (GTK_IS_TOOL_ITEM (proxy)) { + /* set dummy menu so the arrow gets sensitive */ + menu = gtk_menu_new (); + ev_navigation_action_widget_set_menu (EV_NAVIGATION_ACTION_WIDGET (proxy), menu); + + g_signal_connect (proxy, "show-menu", + G_CALLBACK (menu_activated_cb), action); + } + + GTK_ACTION_CLASS (ev_navigation_action_parent_class)->connect_proxy (action, proxy); +} + +static GtkWidget * +create_tool_item (GtkAction *action) +{ + EvNavigationActionWidget *proxy; + + proxy = g_object_new (EV_TYPE_NAVIGATION_ACTION_WIDGET, NULL); + gtk_widget_show (GTK_WIDGET (proxy)); + + return GTK_WIDGET (proxy); +} + +static GtkWidget * +create_menu_item (GtkAction *action) +{ + GtkWidget *menu; + GtkWidget *menu_item; + + menu = build_menu (EV_NAVIGATION_ACTION (action)); + + menu_item = GTK_ACTION_CLASS (ev_navigation_action_parent_class)->create_menu_item (action); + + gtk_menu_item_set_submenu (GTK_MENU_ITEM (menu_item), menu); + + gtk_widget_show (menu_item); + + return menu_item; +} + +static void +ev_navigation_action_init (EvNavigationAction *action) +{ + action->priv = EV_NAVIGATION_ACTION_GET_PRIVATE (action); +} + +static void +ev_navigation_action_finalize (GObject *object) +{ + EvNavigationAction *action = EV_NAVIGATION_ACTION (object); + + if (action->priv->history) { + g_object_remove_weak_pointer (G_OBJECT (action->priv->history), + (gpointer) &action->priv->history); + action->priv->history = NULL; + } + + G_OBJECT_CLASS (ev_navigation_action_parent_class)->finalize (object); +} + +static void +ev_navigation_action_class_init (EvNavigationActionClass *class) +{ + GObjectClass *object_class = G_OBJECT_CLASS (class); + GtkActionClass *action_class = GTK_ACTION_CLASS (class); + + object_class->finalize = ev_navigation_action_finalize; + + action_class->toolbar_item_type = GTK_TYPE_TOOL_ITEM; + action_class->create_tool_item = create_tool_item; + action_class->connect_proxy = connect_proxy; + action_class->create_menu_item = create_menu_item; + + widget_signals[WIDGET_ACTIVATE_LINK] = g_signal_new ("activate_link", + G_OBJECT_CLASS_TYPE (object_class), + G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, + G_STRUCT_OFFSET (EvNavigationActionClass, activate_link), + NULL, NULL, + g_cclosure_marshal_VOID__OBJECT, + G_TYPE_NONE, 1, + G_TYPE_OBJECT); + + g_type_class_add_private (object_class, sizeof (EvNavigationActionPrivate)); +} -- cgit v1.2.1