/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Authors: Jeffrey Stedfast <fejj@ximian.com>
* Michael Zucchi <notzed@ximian.com>
*
* Copyright 2003 Ximian, Inc. (www.ximian.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License 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 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.
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gdk-pixbuf/gdk-pixbuf-loader.h>
#ifdef HAVE_LIBGNOMEUI_GNOME_THUMBNAIL_H
#include <libgnomeui/gnome-thumbnail.h>
#endif
#include <gtk/gtkimage.h>
#include "em-icon-stream.h"
#include "libedataserver/e-msgport.h"
#define d(x)
struct _emis_cache_node {
EMCacheNode node;
GdkPixbuf *pixbuf;
};
static void em_icon_stream_class_init (EMIconStreamClass *klass);
static void em_icon_stream_init (CamelObject *object);
static void em_icon_stream_finalize (CamelObject *object);
static ssize_t emis_sync_write(CamelStream *stream, const char *buffer, size_t n);
static int emis_sync_close(CamelStream *stream);
static int emis_sync_flush(CamelStream *stream);
static EMSyncStreamClass *parent_class = NULL;
static EMCache *emis_cache;
static void
emis_cache_free(void *data)
{
struct _emis_cache_node *node = data;
g_object_unref(node->pixbuf);
}
CamelType
em_icon_stream_get_type (void)
{
static CamelType type = CAMEL_INVALID_TYPE;
if (type == CAMEL_INVALID_TYPE) {
parent_class = (EMSyncStreamClass *)em_sync_stream_get_type();
type = camel_type_register (em_sync_stream_get_type(),
"EMIconStream",
sizeof (EMIconStream),
sizeof (EMIconStreamClass),
(CamelObjectClassInitFunc) em_icon_stream_class_init,
NULL,
(CamelObjectInitFunc) em_icon_stream_init,
(CamelObjectFinalizeFunc) em_icon_stream_finalize);
emis_cache = em_cache_new(60, sizeof(struct _emis_cache_node), emis_cache_free);
}
return type;
}
static void
em_icon_stream_class_init (EMIconStreamClass *klass)
{
((EMSyncStreamClass *)klass)->sync_write = emis_sync_write;
((EMSyncStreamClass *)klass)->sync_flush = emis_sync_flush;
((EMSyncStreamClass *)klass)->sync_close = emis_sync_close;
}
static void
em_icon_stream_init (CamelObject *object)
{
EMIconStream *emis = (EMIconStream *)object;
emis->width = 24;
emis->height = 24;
}
static void
emis_cleanup(EMIconStream *emis)
{
if (emis->loader) {
gdk_pixbuf_loader_close(emis->loader, NULL);
g_object_unref(emis->loader);
emis->loader = NULL;
}
if (emis->destroy_id) {
g_signal_handler_disconnect(emis->image, emis->destroy_id);
emis->destroy_id = 0;
}
g_free(emis->key);
emis->key = NULL;
emis->image = NULL;
emis->sync.cancel = TRUE;
}
static void
em_icon_stream_finalize(CamelObject *object)
{
EMIconStream *emis = (EMIconStream *)object;
emis_cleanup(emis);
}
static ssize_t
emis_sync_write(CamelStream *stream, const char *buffer, size_t n)
{
EMIconStream *emis = EM_ICON_STREAM (stream);
if (emis->loader == NULL)
return -1;
if (!gdk_pixbuf_loader_write(emis->loader, buffer, n, NULL)) {
emis_cleanup(emis);
return -1;
}
return (ssize_t) n;
}
static int
emis_sync_flush(CamelStream *stream)
{
return 0;
}
static int
emis_sync_close(CamelStream *stream)
{
EMIconStream *emis = (EMIconStream *)stream;
int width, height, ratio;
GdkPixbuf *pixbuf, *mini;
struct _emis_cache_node *node;
if (emis->loader == NULL)
return -1;
gdk_pixbuf_loader_close(emis->loader, NULL);
pixbuf = gdk_pixbuf_loader_get_pixbuf(emis->loader);
if (pixbuf == NULL) {
d(printf("couldn't get pixbuf from loader\n"));
emis_cleanup(emis);
return -1;
}
width = gdk_pixbuf_get_width(pixbuf);
height = gdk_pixbuf_get_height(pixbuf);
if (width != emis->width || height != emis->height) {
if (width >= height) {
if (width > emis->width) {
ratio = width / emis->width;
width = emis->width;
height /= ratio;
}
} else {
if (height > emis->height) {
ratio = height / emis->height;
height = emis->height;
width /= ratio;
}
}
#ifdef HAVE_LIBGNOMEUI_GNOME_THUMBNAIL_H
mini = gnome_thumbnail_scale_down_pixbuf (pixbuf, width, height);
#else
mini = gdk_pixbuf_scale_simple(pixbuf, width, height, GDK_INTERP_BILINEAR);
#endif
gtk_image_set_from_pixbuf(emis->image, mini);
pixbuf = mini;
} else {
g_object_ref(pixbuf);
gtk_image_set_from_pixbuf(emis->image, pixbuf);
}
node = (struct _emis_cache_node *)em_cache_node_new(emis_cache, emis->key);
node->pixbuf = pixbuf;
em_cache_add(emis_cache, (EMCacheNode *)node);
g_object_unref(emis->loader);
emis->loader = NULL;
g_signal_handler_disconnect(emis->image, emis->destroy_id);
emis->destroy_id = 0;
return 0;
}
static void
emis_image_destroy(struct _GtkImage *image, EMIconStream *emis)
{
emis_cleanup(emis);
}
CamelStream *
em_icon_stream_new(GtkImage *image, const char *key)
{
EMIconStream *new;
new = EM_ICON_STREAM(camel_object_new(EM_ICON_STREAM_TYPE));
new->image = image;
new->destroy_id = g_signal_connect(image, "destroy", G_CALLBACK(emis_image_destroy), new);
new->loader = gdk_pixbuf_loader_new();
new->key = g_strdup(key);
return (CamelStream *)new;
}
GdkPixbuf *
em_icon_stream_get_image(const char *key)
{
struct _emis_cache_node *node;
GdkPixbuf *pb = NULL;
/* forces the cache to be setup if not */
em_icon_stream_get_type();
node = (struct _emis_cache_node *)em_cache_lookup(emis_cache, key);
if (node) {
pb = node->pixbuf;
g_object_ref(pb);
em_cache_node_unref(emis_cache, (EMCacheNode *)node);
}
return pb;
}
void
em_icon_stream_clear_cache(void)
{
em_cache_clear(emis_cache);
}
