path: root/src/ppview-toolbar.c

/*
 *  Copyright (C) 2002 Marco Pesenti Gritti
 *
 *  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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 *  $Id$
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "ppview-toolbar.h"
#include "ephy-window.h"
#include "ephy-string.h"
#include "ephy-gui.h"

#include <string.h>
#include <glib/gi18n.h>
#include <gtk/gtkentry.h>
#include <gtk/gtkmenu.h>
#include <gtk/gtkuimanager.h>

static void ppview_toolbar_class_init (PPViewToolbarClass *klass);
static void ppview_toolbar_init (PPViewToolbar *t);
static void ppview_toolbar_finalize (GObject *object);
static void ppview_toolbar_set_window (PPViewToolbar *t, EphyWindow *window);
static void
ppview_toolbar_set_property (GObject *object,
                             guint prop_id,
                             const GValue *value,
                             GParamSpec *pspec);
static void
ppview_toolbar_get_property (GObject *object,
                             guint prop_id,
                             GValue *value,
                             GParamSpec *pspec);

enum
{
    PROP_0,
    PROP_EPHY_WINDOW
};

static GObjectClass *parent_class = NULL;

#define EPHY_PPVIEW_TOOLBAR_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EPHY_TYPE_PPVIEW_TOOLBAR, PPViewToolbarPrivate))

struct PPViewToolbarPrivate
{
    EphyWindow *window;
    GtkUIManager *ui_merge;
    GtkActionGroup *action_group;
    guint ui_id;
    int current_page;
};

static void
toolbar_cmd_ppv_goto_first (GtkUIManager *merge,
                PPViewToolbar *t);

static void
toolbar_cmd_ppv_goto_last (GtkUIManager *merge,
               PPViewToolbar *t);

static void
toolbar_cmd_ppv_go_back (GtkUIManager *merge,
             PPViewToolbar *t);

static void
toolbar_cmd_ppv_go_forward (GtkUIManager *merge,
                PPViewToolbar *t);

static void
toolbar_cmd_ppv_close (GtkUIManager *merge,
               PPViewToolbar *t);

static GtkActionEntry entries [] = {
    { "PPVGotoFirst", GTK_STOCK_GOTO_FIRST,
      N_("First"), NULL,
      N_("Go to the first page"),
      (GCallback)toolbar_cmd_ppv_goto_first },
    { "PPVGotoLast", GTK_STOCK_GOTO_LAST,
      N_("Last"), NULL,
      N_("Go to the last page"),
      (GCallback)toolbar_cmd_ppv_goto_last },
    { "PPVGoBack", GTK_STOCK_GO_BACK,
      N_("Previous"), NULL,
      N_("Go to the previous page"),
      (GCallback)toolbar_cmd_ppv_go_back },
    { "PPVGoForward", GTK_STOCK_GO_FORWARD,
      N_("Next"), NULL,
      N_("Go to next page"),
      (GCallback)toolbar_cmd_ppv_go_forward },
    { "PPVClose", GTK_STOCK_CLOSE,
      N_("Close"), NULL,
      N_("Close print preview"),
      (GCallback)toolbar_cmd_ppv_close },
};
static guint n_entries = G_N_ELEMENTS (entries);

static const gchar *ui_info =
"<ui>"
"  <toolbar name=\"PPViewToolbar\">"
"    <toolitem name=\"PPVGotoFirstItem\" action=\"PPVGotoFirst\" />"
"    <toolitem name=\"PPVGotoLastItem\" action=\"PPVGotoLast\" />"
"    <toolitem name=\"PPVGoBackItem\" action=\"PPVGoBack\" />"
"    <toolitem name=\"PPVGoForwardItem\" action=\"PPVGoForward\" />"
"    <toolitem name=\"PPVClose\" action=\"PPVClose\" />"
"  </toolbar>\n"
"</ui>\n";

GType
ppview_toolbar_get_type (void)
{
    static GType ppview_toolbar_type = 0;

    if (ppview_toolbar_type == 0)
    {
        static const GTypeInfo our_info =
        {
            sizeof (PPViewToolbarClass),
            NULL, /* base_init */
            NULL, /* base_finalize */
            (GClassInitFunc) ppview_toolbar_class_init,
            NULL,
            NULL, /* class_data */
            sizeof (PPViewToolbar),
            0, /* n_preallocs */
            (GInstanceInitFunc) ppview_toolbar_init
        };

        ppview_toolbar_type = g_type_register_static (G_TYPE_OBJECT,
                                  "PPViewToolbar",
                                  &our_info, 0);
        }

    return ppview_toolbar_type;
}

static void
ppview_toolbar_class_init (PPViewToolbarClass *klass)
{
        GObjectClass *object_class = G_OBJECT_CLASS (klass);

        parent_class = g_type_class_peek_parent (klass);

        object_class->finalize = ppview_toolbar_finalize;

    object_class->set_property = ppview_toolbar_set_property;
    object_class->get_property = ppview_toolbar_get_property;

    g_object_class_install_property (object_class,
                                         PROP_EPHY_WINDOW,
                                         g_param_spec_object ("EphyWindow",
                                                              "EphyWindow",
                                                              "Parent window",
                                                              EPHY_TYPE_WINDOW,
                                  G_PARAM_READWRITE |
                                  G_PARAM_CONSTRUCT_ONLY));

    g_type_class_add_private (object_class, sizeof(PPViewToolbarPrivate));
}

static void
ppview_toolbar_set_property (GObject *object,
                      guint prop_id,
                      const GValue *value,
                      GParamSpec *pspec)
{
        PPViewToolbar *t = EPHY_PPVIEW_TOOLBAR (object);

        switch (prop_id)
        {
                case PROP_EPHY_WINDOW:
                        ppview_toolbar_set_window (t, g_value_get_object (value));
                        break;
        }
}

static void
ppview_toolbar_get_property (GObject *object,
                      guint prop_id,
                      GValue *value,
                      GParamSpec *pspec)
{
        PPViewToolbar *t = EPHY_PPVIEW_TOOLBAR (object);

        switch (prop_id)
        {
                case PROP_EPHY_WINDOW:
                        g_value_set_object (value, t->priv->window);
                        break;
        }
}

static void
toolbar_update_sensitivity (PPViewToolbar *t)
{
    int pages, c_page;
    EphyWindow *window = t->priv->window;
    EphyEmbed *embed;
    GtkAction *action;
    GtkActionGroup *action_group = t->priv->action_group;

    embed = ephy_window_get_active_embed (window);
    g_return_if_fail (embed != NULL);

    pages = ephy_embed_print_preview_n_pages (embed);
    c_page = t->priv->current_page;

    action = gtk_action_group_get_action (action_group, "PPVGoBack");
    g_object_set (action, "sensitive", c_page > 1, NULL);
    action = gtk_action_group_get_action (action_group, "PPVGotoFirst");
    g_object_set (action, "sensitive", c_page > 1, NULL);
    action = gtk_action_group_get_action (action_group, "PPVGoForward");
    g_object_set (action, "sensitive", c_page < pages, NULL);
    action = gtk_action_group_get_action (action_group, "PPVGotoLast");
    g_object_set (action, "sensitive", c_page < pages, NULL);
}

static void
ppview_toolbar_set_window (PPViewToolbar *t, EphyWindow *window)
{
    g_return_if_fail (t->priv->window == NULL);

    t->priv->window = window;
    t->priv->ui_merge = GTK_UI_MANAGER (t->priv->window->ui_merge);

    t->priv->action_group = gtk_action_group_new ("PPViewActions");
    gtk_action_group_set_translation_domain (t->priv->action_group, NULL);
    gtk_action_group_add_actions (t->priv->action_group, entries,   
                      n_entries, t);
    gtk_ui_manager_insert_action_group (t->priv->ui_merge,
                        t->priv->action_group, 0);
    t->priv->ui_id = gtk_ui_manager_add_ui_from_string
        (t->priv->ui_merge, ui_info, -1, NULL);

    toolbar_update_sensitivity (t);
}

static void
ppview_toolbar_init (PPViewToolbar *t)
{
    t->priv = EPHY_PPVIEW_TOOLBAR_GET_PRIVATE (t);

    t->priv->window = NULL;
    t->priv->ui_merge = NULL;
    t->priv->current_page = 1;
}

static void
ppview_toolbar_finalize (GObject *object)
{
    PPViewToolbar *t = EPHY_PPVIEW_TOOLBAR (object);

    gtk_ui_manager_remove_ui (t->priv->ui_merge, t->priv->ui_id);
    gtk_ui_manager_remove_action_group (t->priv->ui_merge,
                        t->priv->action_group);
    g_object_unref (t->priv->action_group);

        G_OBJECT_CLASS (parent_class)->finalize (object);
}

PPViewToolbar *
ppview_toolbar_new (EphyWindow *window)
{
    PPViewToolbar *t;

    t = EPHY_PPVIEW_TOOLBAR (g_object_new (EPHY_TYPE_PPVIEW_TOOLBAR,
                           "EphyWindow", window,
                           NULL));

    return t;
}

static void
toolbar_cmd_ppv_goto_first (GtkUIManager *merge,
                PPViewToolbar *t)
{
    EphyWindow *window = t->priv->window;
    EphyEmbed *embed;

    embed = ephy_window_get_active_embed (window);
    g_return_if_fail (EPHY_IS_EMBED (embed));

    ephy_embed_print_preview_navigate (embed, PRINTPREVIEW_HOME, 0);

    t->priv->current_page = 1;

    toolbar_update_sensitivity (t);
}

static void
toolbar_cmd_ppv_goto_last  (GtkUIManager *merge,
                PPViewToolbar *t)
{
    EphyWindow *window = t->priv->window;
    EphyEmbed *embed;

    embed = ephy_window_get_active_embed (window);
    g_return_if_fail (embed != NULL);

    ephy_embed_print_preview_navigate (embed,
                       PRINTPREVIEW_END,
                       0);

    t->priv->current_page = ephy_embed_print_preview_n_pages (embed);

    toolbar_update_sensitivity (t);
}

static int
clamp_page_limits (PPViewToolbar *t, int page)
{
    EphyWindow *window = t->priv->window;
    EphyEmbed *embed;
    int pages;

    embed = ephy_window_get_active_embed (window);
    g_return_val_if_fail (embed != NULL, -1);

    pages = ephy_embed_print_preview_n_pages (embed);

    return CLAMP (page, 1, pages);
}

static void
toolbar_cmd_ppv_go_back  (GtkUIManager *merge,
              PPViewToolbar *t)
{
    EphyWindow *window = t->priv->window;
    EphyEmbed *embed;

    embed = ephy_window_get_active_embed (window);
    g_return_if_fail (EPHY_IS_EMBED (embed));

    t->priv->current_page = clamp_page_limits (t, t->priv->current_page - 1);

    ephy_embed_print_preview_navigate (embed,
                       PRINTPREVIEW_GOTO_PAGENUM,
                       t->priv->current_page);

    toolbar_update_sensitivity (t);
}

static void
toolbar_cmd_ppv_go_forward (GtkUIManager *merge,
                PPViewToolbar *t)
{
    EphyWindow *window = t->priv->window;
    EphyEmbed *embed;

    embed = ephy_window_get_active_embed (window);
    g_return_if_fail (EPHY_IS_EMBED (embed));

    t->priv->current_page = clamp_page_limits (t, t->priv->current_page + 1);

    ephy_embed_print_preview_navigate (embed,
                       PRINTPREVIEW_GOTO_PAGENUM,
                       t->priv->current_page);

    toolbar_update_sensitivity (t);
}

static void
toolbar_cmd_ppv_close (GtkUIManager *merge,
               PPViewToolbar *t)
{
    EphyWindow *window;
    EphyEmbed *embed;

    g_return_if_fail (EPHY_IS_PPVIEW_TOOLBAR (t));

    window = t->priv->window;
    g_return_if_fail (EPHY_IS_WINDOW (window));

    embed = ephy_window_get_active_embed (window);
    g_return_if_fail (EPHY_IS_EMBED (embed));

    ephy_window_set_print_preview (window, FALSE);

    ephy_embed_print_preview_close (embed);
}