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
|
/*
* presentation.c
*
* Colloquium - A tiny presentation program
*
* Copyright (c) 2011 Thomas White <taw@bitwiz.org.uk>
*
* 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 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 "presentation.h"
#include "slide_render.h"
#include "objects.h"
struct slide *add_slide(struct presentation *p)
{
struct slide **try;
struct slide *new;
try = realloc(p->slides, (1+p->num_slides)*sizeof(struct slide *));
if ( try == NULL ) return NULL;
p->slides = try;
new = malloc(sizeof(struct slide));
if ( new == NULL ) return NULL;
/* Doesn't matter that p->slides now has some excess space -
* it'll get corrected the next time a slide is added or deleted. */
/* No objects to start with */
new->num_objects = 0;
new->object_seq = 0;
new->objects = NULL;
new->slide_width = p->slide_width;
new->slide_height = p->slide_height;
new->render_cache_seq = 0;
new->render_cache = NULL;
render_slide(new); /* Render nothing, just to make the surface exist */
p->slides[p->num_slides++] = new;
printf("Now %i slides\n", p->num_slides);
return new;
}
int add_object_to_slide(struct slide *s, struct object *o)
{
struct object **try;
try = realloc(s->objects, (1+s->num_objects)*sizeof(struct object *));
if ( try == NULL ) return 1;
s->objects = try;
s->objects[s->num_objects++] = o;
o->parent = s;
printf("Now %i objects in slide %p\n", s->num_objects, s);
return 0;
}
void remove_object_from_slide(struct slide *s, struct object *o)
{
int i;
int found = 0;
for ( i=0; i<s->num_objects; i++ ) {
if ( s->objects[i] == o ) {
assert(!found);
found = 1;
continue;
}
if ( found ) {
if ( i == s->num_objects-1 ) {
s->objects[i] = NULL;
} else {
s->objects[i] = s->objects[i+1];
}
}
}
s->num_objects--;
}
struct presentation *new_presentation()
{
struct presentation *new;
new = malloc(sizeof(struct presentation));
new->titlebar = strdup("(untitled)");
new->filename = NULL;
new->window = NULL;
new->ui = NULL;
new->action_group = NULL;
new->slide_width = 1024.0;
new->slide_height = 768.0;
/* Add one blank slide and view it */
new->num_slides = 0;
new->slides = NULL;
new -> view_slide = add_slide(new);
new->view_slide_number = 0;
new->editing_object = NULL;
return new;
}
|
