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
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
/* poppler-layer.cc: glib interface to poppler
*
* Copyright (C) 2008 Carlos Garcia Campos <carlosgc@gnome.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, 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 "poppler-layer.h"
#include "poppler-private.h"
/**
* SECTION:poppler-layer
* @short_description: Layers
* @title: PopplerLayer
*/
typedef struct _PopplerLayerClass PopplerLayerClass;
struct _PopplerLayerClass
{
GObjectClass parent_class;
};
G_DEFINE_TYPE (PopplerLayer, poppler_layer, G_TYPE_OBJECT)
static void
poppler_layer_finalize (GObject *object)
{
PopplerLayer *poppler_layer = POPPLER_LAYER (object);
if (poppler_layer->document)
{
g_object_unref (poppler_layer->document);
poppler_layer->document = NULL;
}
if (poppler_layer->title)
{
g_free (poppler_layer->title);
poppler_layer->title = NULL;
}
poppler_layer->layer = NULL;
poppler_layer->rbgroup = NULL;
G_OBJECT_CLASS (poppler_layer_parent_class)->finalize (object);
}
static void
poppler_layer_init (PopplerLayer *layer)
{
}
static void
poppler_layer_class_init (PopplerLayerClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->finalize = poppler_layer_finalize;
}
PopplerLayer *
_poppler_layer_new (PopplerDocument *document,
Layer *layer,
GList *rbgroup)
{
PopplerLayer *poppler_layer;
GooString *layer_name;
g_return_val_if_fail (POPPLER_IS_DOCUMENT (document), NULL);
g_return_val_if_fail (layer != NULL, NULL);
poppler_layer = POPPLER_LAYER (g_object_new (POPPLER_TYPE_LAYER, NULL));
poppler_layer->document = (PopplerDocument *)g_object_ref (document);
poppler_layer->layer = layer;
poppler_layer->rbgroup = rbgroup;
layer_name = layer->oc->getName ();
poppler_layer->title = layer_name ? _poppler_goo_string_to_utf8 (layer_name) : NULL;
return poppler_layer;
}
/**
* poppler_layer_get_title
* @layer: a #PopplerLayer
*
* Returns the name of the layer suitable for
* presentation as a title in a viewer's GUI
*
* Return value: a string containing the title of the layer
*
* Since: 0.12
**/
const gchar *
poppler_layer_get_title (PopplerLayer *poppler_layer)
{
g_return_val_if_fail (POPPLER_IS_LAYER (poppler_layer), NULL);
return poppler_layer->title;
}
/**
* poppler_layer_is_visible
* @layer: a #PopplerLayer
*
* Returns whether @layer is visible
*
* Return value: %TRUE if @layer is visible
*
* Since: 0.12
**/
gboolean
poppler_layer_is_visible (PopplerLayer *poppler_layer)
{
g_return_val_if_fail (POPPLER_IS_LAYER (poppler_layer), FALSE);
return poppler_layer->layer->oc->getState () == OptionalContentGroup::On;
}
/**
* poppler_layer_show
* @layer: a #PopplerLayer
*
* Shows @layer
*
* Since: 0.12
**/
void
poppler_layer_show (PopplerLayer *poppler_layer)
{
GList *l;
Layer *layer;
g_return_if_fail (POPPLER_IS_LAYER (poppler_layer));
layer = poppler_layer->layer;
if (layer->oc->getState () == OptionalContentGroup::On)
return;
layer->oc->setState (OptionalContentGroup::On);
for (l = poppler_layer->rbgroup; l && l->data; l = g_list_next (l)) {
OptionalContentGroup *oc = (OptionalContentGroup *)l->data;
if (oc != layer->oc)
oc->setState (OptionalContentGroup::Off);
}
}
/**
* poppler_layer_hide
* @layer: a #PopplerLayer
*
* Hides @layer. If @layer is the parent of other nested layers,
* such layers will be also hidden and will be blocked until @layer
* is shown again
*
* Since: 0.12
**/
void
poppler_layer_hide (PopplerLayer *poppler_layer)
{
Layer *layer;
g_return_if_fail (POPPLER_IS_LAYER (poppler_layer));
layer = poppler_layer->layer;
if (layer->oc->getState () == OptionalContentGroup::Off)
return;
layer->oc->setState (OptionalContentGroup::Off);
}
/**
* poppler_layer_is_parent
* @layer: a #PopplerLayer
*
* Returns whether @layer is parent of other nested layers.
*
* Return value: %TRUE if @layer is a parent layer
*
* Since: 0.12
**/
gboolean
poppler_layer_is_parent (PopplerLayer *poppler_layer)
{
g_return_val_if_fail (POPPLER_IS_LAYER (poppler_layer), FALSE);
return poppler_layer->layer->kids != NULL;
}
/**
* poppler_layer_get_radio_button_group_id
* @layer: a #PopplerLayer
*
* Returns the numeric ID the radio button group associated with @layer.
*
* Return value: the ID of the radio button group associated with @layer,
* or 0 if the layer is not associated to any radio button group
*
* Since: 0.12
**/
gint
poppler_layer_get_radio_button_group_id (PopplerLayer *poppler_layer)
{
g_return_val_if_fail (POPPLER_IS_LAYER (poppler_layer), FALSE);
return GPOINTER_TO_INT (poppler_layer->rbgroup);
}
|
