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
|
/*
* presentation.c
*
* Copyright © 2019 Thomas White <taw@bitwiz.org.uk>
*
* This file is part of Colloquium.
*
* Colloquium 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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <stdio.h>
#include <gio/gio.h>
#ifdef HAVE_PANGO
#include <pango/pango.h>
#endif
#include "presentation.h"
#include "stylesheet.h"
#include "slide.h"
#include "narrative.h"
#include "imagestore.h"
#include "storycode.h"
struct _presentation
{
Stylesheet *stylesheet;
Narrative *narrative;
ImageStore *imagestore;
int n_slides;
Slide **slides;
int max_slides;
const char *language;
};
Presentation *presentation_new()
{
Presentation *p;
p = malloc(sizeof(*p));
if ( p == NULL ) return NULL;
p->stylesheet = NULL;
p->narrative = NULL;
p->slides = NULL;
p->n_slides = 0;
p->max_slides = 0;
p->imagestore = NULL;
#ifdef HAVE_PANGO
p->language = pango_language_to_string(pango_language_get_default());
#else
p->language = NULL;
#endif
return p;
}
Presentation *presentation_load(GFile *file)
{
GBytes *bytes;
const char *text;
size_t len;
Presentation *p;
bytes = g_file_load_bytes(file, NULL, NULL, NULL);
if ( bytes == NULL ) return NULL;
text = g_bytes_get_data(bytes, &len);
p = storycode_parse_presentation(text);
g_bytes_unref(bytes);
if ( p == NULL ) return NULL;
p->imagestore = imagestore_new("."); /* FIXME: From app config */
imagestore_set_parent(p->imagestore, g_file_get_parent(file));
return p;
}
int presentation_save(Presentation *p, GFile *file)
{
/* FIXME: Implementation */
return 1;
}
void presentation_free(Presentation *p)
{
/* FIXME: Free narrative, slides, imagestore */
free(p);
}
void presentation_add_stylesheet(Presentation *p, Stylesheet *ss)
{
assert(p->stylesheet == NULL);
p->stylesheet = ss;
}
void presentation_add_narrative(Presentation *p, Narrative *n)
{
assert(p->narrative == NULL);
p->narrative = n;
}
void presentation_add_slide(Presentation *p, Slide *s)
{
assert(p->n_slides <= p->max_slides);
if ( p->n_slides == p->max_slides ) {
Slide **nslides = realloc(p->slides,
(p->max_slides+8)*sizeof(Slide *));
if ( nslides == NULL ) {
fprintf(stderr, "Failed to allocate memory for slide\n");
return;
}
p->slides = nslides;
p->max_slides += 8;
}
p->slides[p->n_slides++] = s;
}
int presentation_get_num_slides(Presentation *p)
{
return p->n_slides;
}
Slide *presentation_get_slide_by_number(Presentation *p, int i)
{
if ( i >= p->n_slides ) return NULL;
if ( i < 0 ) return NULL;
return p->slides[i];
}
signed int presentation_get_slide_number(Presentation *p, Slide *s)
{
int i;
if ( p == NULL ) return -1;
for ( i=0; i<p->n_slides; i++ ) {
if ( s == p->slides[i] ) return i;
}
return -1;
}
Stylesheet *presentation_get_stylesheet(Presentation *p)
{
if ( p == NULL ) return NULL;
return p->stylesheet;
}
Narrative *presentation_get_narrative(Presentation *p)
{
if ( p == NULL ) return NULL;
return p->narrative;
}
const char *presentation_get_language(Presentation *p)
{
if ( p == NULL ) return NULL;
return p->language;
}
ImageStore *presentation_get_imagestore(Presentation *p)
{
if ( p == NULL ) return NULL;
return p->imagestore;
}
|