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/*
* slideshow.h
*
* Copyright © 2013-2015 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/>.
*
*/
#ifndef SLIDESHOW_H
#define SLIDESHOW_H
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
/* Opaque data structure representing a slideshow */
typedef struct _slideshow SlideShow;
struct sscontrolfuncs
{
/* Controller should switch slide forwards or backwards */
void (*next_slide)(SlideShow *ss, void *vp);
void (*prev_slide)(SlideShow *ss, void *vp);
/* Controller should return what it thinks is the current slide
* (this might not be what is on the screen, e.g. if the display
* is unlinked) */
SCBlock *(*current_slide)(SlideShow *ss, void *vp);
/* Controller should update whatever visual representation of
* whether or not the display is linked */
void (*changed_link)(SlideShow *ss, void *vp);
/* Slideshow ended (including if you called end_slideshow) */
void (*end_show)(SlideShow *ss, void *vp);
};
extern SlideShow *try_start_slideshow(struct presentation *p,
struct sscontrolfuncs ssc, void *vp);
extern void end_slideshow(SlideShow *ss);
extern void change_proj_slide(SlideShow *ss, SCBlock *np);
extern SCBlock *slideshow_slide(SlideShow *ss);
extern void toggle_slideshow_link(SlideShow *ss);
extern int slideshow_linked(SlideShow *ss);
extern void check_toggle_blank(SlideShow *ss);
extern void redraw_slideshow(SlideShow *ss);
extern void slideshow_rerender(SlideShow *ss);
#endif /* SLIDESHOW_H */
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