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path: root/embed/ephy-favicon.c
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/*
 *  Copyright (C) 2002 Jorn Baayen <jorn@nl.linux.org>
 *
 *  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 of the License, 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.
 */

#include <gtk/gtkwidget.h>
#include <string.h>

#include "ephy-favicon.h"
#include "ephy-embed-shell.h"

static void ephy_favicon_class_init (EphyFaviconClass *klass);
static void ephy_favicon_init (EphyFavicon *ma);
static void ephy_favicon_finalize (GObject *object);
static void ephy_favicon_set_property (GObject *object,
                       guint prop_id,
                       const GValue *value,
                       GParamSpec *pspec);
static void ephy_favicon_get_property (GObject *object,
                       guint prop_id,
                       GValue *value,
                       GParamSpec *pspec);
static void ephy_favicon_update_image (EphyFavicon *favicon);
static void cache_changed_cb (EphyFaviconCache *cache,
                      const char *url,
                      EphyFavicon *favicon);

struct EphyFaviconPrivate
{
    EphyFaviconCache *cache;

    char *url;
};

enum
{
    PROP_0,
    PROP_CACHE,
    PROP_URL
};

enum
{
    CHANGED,
    LAST_SIGNAL
};

static guint ephy_favicon_signals[LAST_SIGNAL] = { 0 };

static GObjectClass *parent_class = NULL;

GType
ephy_favicon_get_type (void)
{
    static GType ephy_favicon_type = 0;

    if (ephy_favicon_type == 0)
    {
        static const GTypeInfo our_info =
        {
            sizeof (EphyFaviconClass),
            NULL,
            NULL,
            (GClassInitFunc) ephy_favicon_class_init,
            NULL,
            NULL,
            sizeof (EphyFavicon),
            0,
            (GInstanceInitFunc) ephy_favicon_init
        };

        ephy_favicon_type = g_type_register_static (GTK_TYPE_IMAGE,
                                  "EphyFavicon",
                                  &our_info, 0);
    }

    return ephy_favicon_type;
}

static void
ephy_favicon_class_init (EphyFaviconClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS (klass);

    parent_class = g_type_class_peek_parent (klass);

    object_class->finalize = ephy_favicon_finalize;

    object_class->set_property = ephy_favicon_set_property;
    object_class->get_property = ephy_favicon_get_property;

    g_object_class_install_property (object_class,
                     PROP_CACHE,
                     g_param_spec_object ("cache",
                                  "Favicon cache",
                                  "Favicon cache",
                                  EPHY_TYPE_FAVICON_CACHE,
                                  G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
    g_object_class_install_property (object_class,
                     PROP_URL,
                     g_param_spec_string ("url",
                                  "Associated URL",
                                  "Associated URL",
                                  NULL,
                                  G_PARAM_READWRITE));

    ephy_favicon_signals[CHANGED] =
        g_signal_new ("changed",
                  G_OBJECT_CLASS_TYPE (object_class),
                  G_SIGNAL_RUN_LAST,
                  G_STRUCT_OFFSET (EphyFaviconClass, changed),
                  NULL, NULL,
                  g_cclosure_marshal_VOID__VOID,
                  G_TYPE_NONE,
                  0);
}

static void
ephy_favicon_init (EphyFavicon *ma)
{
    ma->priv = g_new0 (EphyFaviconPrivate, 1);

    gtk_widget_set_size_request (GTK_WIDGET (ma), 16, 16);
}

static void
ephy_favicon_finalize (GObject *object)
{
    EphyFavicon *ma;

    g_return_if_fail (object != NULL);
    g_return_if_fail (EPHY_IS_FAVICON (object));

    ma = EPHY_FAVICON (object);

    g_return_if_fail (ma->priv != NULL);

    g_free (ma->priv->url);

    g_free (ma->priv);

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

static void
ephy_favicon_set_property (GObject *object,
               guint prop_id,
               const GValue *value,
               GParamSpec *pspec)
{
    EphyFavicon *favicon = EPHY_FAVICON (object);

    switch (prop_id)
    {
    case PROP_CACHE:
        favicon->priv->cache = g_value_get_object (value);

        g_signal_connect_object (G_OBJECT (favicon->priv->cache),
                         "changed",
                         G_CALLBACK (cache_changed_cb),
                         favicon,
                         0);

        ephy_favicon_update_image (favicon);
        break;
    case PROP_URL:
        g_free (favicon->priv->url);
        favicon->priv->url = g_strdup (g_value_get_string (value));

        ephy_favicon_update_image (favicon);
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
        break;
    }
}

static void
ephy_favicon_get_property (GObject *object,
               guint prop_id,
               GValue *value,
               GParamSpec *pspec)
{
    EphyFavicon *favicon = EPHY_FAVICON (object);

    switch (prop_id)
    {
    case PROP_CACHE:
        g_value_set_object (value, favicon->priv->cache);
        break;
    case PROP_URL:
        g_value_set_string (value, favicon->priv->url);
        break;
    default:
        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
        break;
    }
}

GtkWidget *
ephy_favicon_new (const char *url)
{
    EphyFavicon *favicon;
    EphyFaviconCache *cache = ephy_embed_shell_get_favicon_cache (embed_shell);

    g_return_val_if_fail (EPHY_IS_FAVICON_CACHE (cache), NULL);

    favicon = EPHY_FAVICON (g_object_new (EPHY_TYPE_FAVICON,
                        "cache", cache,
                        "url", url,
                        NULL));

    g_return_val_if_fail (favicon->priv != NULL, NULL);

    return GTK_WIDGET (favicon);
}

void
ephy_favicon_set_url (EphyFavicon *favicon,
              const char *url)
{
    g_return_if_fail (EPHY_IS_FAVICON (favicon));

    g_object_set (G_OBJECT (favicon),
              "url", url,
              NULL);
}

const char *
ephy_favicon_get_url (EphyFavicon *favicon)
{
    char *url;

    g_return_val_if_fail (EPHY_IS_FAVICON (favicon), NULL);

    g_object_get (G_OBJECT (favicon),
              "url", &url,
              NULL);

    return (const char *) url;
}

static void
cache_changed_cb (EphyFaviconCache *cache,
          const char *url,
          EphyFavicon *favicon)
{
    if (strcmp (url, favicon->priv->url) == 0)
    {
        ephy_favicon_update_image (favicon);
    }
}

static void
ephy_favicon_update_image (EphyFavicon *favicon)
{
    GdkPixbuf *pixbuf;

    g_return_if_fail (EPHY_IS_FAVICON_CACHE (favicon->priv->cache));

    pixbuf = ephy_favicon_cache_lookup (favicon->priv->cache,
                          favicon->priv->url);

    gtk_image_set_from_pixbuf (GTK_IMAGE (favicon), pixbuf);

    g_signal_emit (G_OBJECT (favicon), ephy_favicon_signals[CHANGED], 0);
}