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/*
* presentation.c
*
* Colloquium - A tiny presentation program
*
* Copyright (c) 2012 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 <gtk/gtk.h>
#include "presentation.h"
#include "stylesheet.h"
static int num_presentations = 0;
void free_presentation(struct presentation *p)
{
int i;
int final = 0;
for ( i=0; i<p->num_slides; i++ ) {
free_slide(p->slides[i]);
}
(*p->num_presentations)--;
if ( *p->num_presentations == 0 ) final = 1;
/* FIXME: Loads of stuff leaks here */
free(p->filename);
free(p);
if ( final ) {
gtk_main_quit();
}
}
int insert_slide(struct presentation *p, struct slide *new, int pos)
{
struct slide **try;
try = realloc(p->slides, (1+p->num_slides)*sizeof(struct slide *));
if ( try == NULL ) {
free(new);
return 1;
}
p->slides = try;
p->completely_empty = 0;
/* Insert into list. Yuk yuk yuk etc. */
if ( (p->num_slides>1) && (pos<p->num_slides-1) ) {
int i;
for ( i=p->num_slides; i>pos+1; i-- ) {
p->slides[i] = p->slides[i-1];
}
p->slides[pos+1] = new;
} else if ( pos == p->num_slides-1 ) {
p->slides[pos+1] = new;
} else {
assert(pos == 0);
p->slides[pos] = new;
}
new->parent = p;
p->num_slides++;
return 0;
}
struct slide *new_slide()
{
struct slide *new;
new = calloc(1, sizeof(struct slide));
if ( new == NULL ) return NULL;
new->rendered_edit = NULL;
new->rendered_proj = NULL;
new->rendered_thumb = NULL;
new->notes = strdup("");
return new;
}
void free_slide(struct slide *s)
{
free(s);
}
struct slide *add_slide(struct presentation *p, int pos)
{
struct slide *s = new_slide();
if ( insert_slide(p, s, pos) ) {
free_slide(s);
return NULL;
}
return s;
}
static char *safe_basename(const char *in)
{
int i;
char *cpy;
char *res;
cpy = strdup(in);
/* Get rid of any trailing slashes */
for ( i=strlen(cpy)-1; i>0; i-- ) {
if ( cpy[i] == '/' ) {
cpy[i] = '\0';
} else {
break;
}
}
/* Find the base name */
for ( i=strlen(cpy)-1; i>0; i-- ) {
if ( cpy[i] == '/' ) {
i++;
break;
}
}
res = strdup(cpy+i);
/* If we didn't find a previous slash, i==0 so res==cpy */
free(cpy);
return res;
}
void get_titlebar_string(struct presentation *p)
{
free(p->titlebar);
if ( p->filename == NULL ) {
p->titlebar = strdup("(untitled)");
} else {
p->titlebar = safe_basename(p->filename);
}
}
int slide_number(struct presentation *p, struct slide *s)
{
int i;
for ( i=0; i<p->num_slides; i++ ) {
if ( p->slides[i] == s ) return i;
}
return p->num_slides;
}
struct presentation *new_presentation()
{
struct presentation *new;
new = calloc(1, sizeof(struct presentation));
num_presentations++;
new->num_presentations = &num_presentations;
new->filename = NULL;
new->titlebar = NULL;
get_titlebar_string(new);
new->window = NULL;
new->ui = NULL;
new->action_group = NULL;
new->slideshow = NULL;
new->notes = 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->cur_edit_slide = NULL;
new->cur_proj_slide = NULL;
new->completely_empty = 1;
//new->ss = new_stylesheet();
//default_stylesheet(new->ss);
return new;
}
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