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/*
* 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 "presentation.h"
#include "stylesheet.h"
#include "slide.h"
#include "narrative.h"
struct _presentation
{
Stylesheet *stylesheet;
Narrative *narrative;
int n_slides;
Slide **slides;
int max_slides;
};
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;
return p;
}
void presentation_free(Presentation *p)
{
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_num_slides(Presentation *p)
{
return p->n_slides;
}
Slide *presentation_slide(Presentation *p, int i)
{
if ( i >= p->n_slides ) return NULL;
if ( i < 0 ) return NULL;
return p->slides[i];
}
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