1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
Copyright (C) 2000 CodeFactory AB
Copyright (C) 2000 Jonas Borgstrm <jonas@codefactory.se>
Copyright (C) 2000 Anders Carlsson <andersca@codefactory.se>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "htmlimagefactory.h"
#include "document/htmldocument.h"
#include "layout/html/htmlboximage.h"
#include "util/htmlstream.h"
#include "util/htmlmarshal.h"
static GObjectClass *factory_parent_class = NULL;
enum {
REQUEST_IMAGE,
LAST_SIGNAL
};
static guint image_factory_signals [LAST_SIGNAL] = { 0 };
static void
html_image_factory_class_init (HtmlImageFactoryClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
factory_parent_class = g_type_class_peek_parent (klass);
image_factory_signals [REQUEST_IMAGE] =
g_signal_new ("request_image",
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (HtmlImageFactoryClass, request_image),
NULL, NULL,
html_marshal_VOID__STRING_POINTER,
G_TYPE_NONE,
2,
G_TYPE_STRING,
G_TYPE_POINTER);
}
static void
html_image_factory_init (HtmlImageFactory *image_factory)
{
image_factory->image_hash = g_hash_table_new (g_str_hash, g_str_equal);
}
GType
html_image_factory_get_type (void)
{
static GType html_image_factory_type = 0;
if (!html_image_factory_type) {
GTypeInfo html_image_factory_info = {
sizeof (HtmlImageFactoryClass),
NULL,
NULL,
(GClassInitFunc) html_image_factory_class_init,
NULL,
NULL,
sizeof (HtmlImageFactory),
1,
(GInstanceInitFunc) html_image_factory_init,
};
html_image_factory_type = g_type_register_static (G_TYPE_OBJECT, "HtmlImageFactory", &html_image_factory_info, 0);
}
return html_image_factory_type;
}
static void
write_pixbuf (HtmlStream *stream, const gchar *data, guint size, HtmlImage *image)
{
GError *error = NULL;
if (!image)
return;
gdk_pixbuf_loader_write (image->loader, data, size, &error);
if (error) {
g_warning ("gdk_pixbuf_loader_write error: %s\n", error->message);
g_error_free (error);
}
}
static void
close_pixbuf (HtmlStream *stream, HtmlImage *image)
{
if (!image)
return;
image->loading = FALSE;
if (html_stream_get_written (stream) == 0) {
image->broken = TRUE;
g_signal_emit_by_name (G_OBJECT (image), "repaint_image", 0, 0,
html_image_get_width (image), html_image_get_height (image));
}
gdk_pixbuf_loader_close (image->loader, NULL);
g_object_unref (G_OBJECT (image->loader));
image->loader = NULL;
image->stream = NULL;
}
static void
html_image_shutdown (HtmlImageFactory *image_factory, HtmlImage *image)
{
g_hash_table_remove (image_factory->image_hash, image->uri);
}
HtmlImage *
html_image_factory_get_image (HtmlImageFactory *image_factory, const gchar *uri)
{
HtmlImage *image;
image = g_hash_table_lookup (image_factory->image_hash, uri);
if (image)
image = (HtmlImage *)g_object_ref (G_OBJECT (image));
else {
HtmlStream *stream;
image = HTML_IMAGE (g_object_new (HTML_IMAGE_TYPE, NULL));
g_signal_connect_swapped (G_OBJECT (image), "last_unref", G_CALLBACK (html_image_shutdown), image_factory);
image->loading = TRUE;
stream = html_stream_new ((HtmlStreamWriteFunc)write_pixbuf, (HtmlStreamCloseFunc)close_pixbuf,
image);
image->stream = stream;
g_object_add_weak_pointer (G_OBJECT (stream), (gpointer *) &(image->stream));
g_object_add_weak_pointer (G_OBJECT (image), (gpointer *) &(stream->user_data));
g_signal_emit (G_OBJECT (image_factory), image_factory_signals [REQUEST_IMAGE], 0, uri, stream);
image->uri = g_strdup (uri);
g_hash_table_insert (image_factory->image_hash, image->uri, image);
}
return image;
}
HtmlImageFactory *
html_image_factory_new (void)
{
HtmlImageFactory *image_factory = HTML_IMAGE_FACTORY (g_object_new (HTML_TYPE_IMAGE_FACTORY, NULL));
return image_factory;
}
|
