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/*
* presentation.h
*
* 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/>.
*
*/
#ifndef PRESENTATION_H
#define PRESENTATION_H
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <gtk/gtk.h>
#include "stylesheet.h"
struct slide
{
struct presentation *parent;
/* Any of these may be NULL */
cairo_surface_t *rendered_proj;
cairo_surface_t *rendered_edit;
/* This should always be present (and up to date). */
cairo_surface_t *rendered_thumb;
int num_objects;
struct object **objects;
};
enum drag_reason
{
DRAG_REASON_NONE,
DRAG_REASON_CREATE,
DRAG_REASON_IMPORT,
DRAG_REASON_TOOL,
};
enum drag_status
{
DRAG_STATUS_NONE,
DRAG_STATUS_COULD_DRAG,
DRAG_STATUS_DRAGGING,
};
struct toolinfo
{
void (*click_select)(struct presentation *p, struct toolinfo *tip,
double x, double y, GdkEventButton *event,
enum drag_status *drag_status,
enum drag_reason *drag_reason);
void (*create_default)(struct presentation *p, struct style *sty,
struct toolinfo *tip);
void (*select)(struct object *o, struct toolinfo *tip);
int (*deselect)(struct object *o, struct toolinfo *tip);
void (*drag)(struct toolinfo *tip, struct presentation *p,
struct object *o, double x, double y);
void (*end_drag)(struct toolinfo *tip, struct presentation *p,
struct object *o, double x, double y);
void (*create_region)(struct toolinfo *tip, struct presentation *p,
double x1, double y1, double x2, double y2);
void (*draw_editing_overlay)(struct toolinfo *tip, cairo_t *cr,
struct object *o);
void (*key_pressed)(struct object *o, guint keyval,
struct toolinfo *tip);
void (*im_commit)(struct object *o, gchar *str, struct toolinfo *tip);
int (*valid_object)(struct object *o);
void (*realise)(struct toolinfo *tip, GtkWidget *w);
struct object *(*deserialize)(struct presentation *p,
struct ds_node *root,
struct toolinfo *tip);
};
struct presentation
{
char *titlebar;
char *filename;
int completely_empty;
int *num_presentations;
struct toolinfo *select_tool;
struct toolinfo *text_tool;
struct toolinfo *image_tool;
GtkWidget *window;
GtkWidget *drawingarea;
GtkUIManager *ui;
GtkActionGroup *action_group;
GtkIMContext *im_context;
GtkWidget *tbox;
/* Pointers to the current "editing" and "projection" slides */
struct slide *cur_edit_slide;
struct slide *cur_proj_slide;
/* This is the "native" size of the slide. It only exists to give
* font size some meaning in the context of a somewhat arbitrary DPI */
double slide_width;
double slide_height;
/* Width of a slide in the editor, projector or thumbnail (pixels) */
int edit_slide_width;
int proj_slide_width;
int thumb_slide_width;
/* This is just to help with rendering the slides within the
* editing window. */
double border_offs_x;
double border_offs_y;
/* FIXME: Might have more than one object selected at a time. */
struct object *editing_object;
/* Stylesheet */
StyleSheet *ss;
struct style *default_style;
/* Dialogue boxes */
StylesheetWindow *stylesheetwindow;
/* Slideshow stuff */
GtkWidget *slideshow;
GtkWidget *ss_drawingarea;
GdkCursor *blank_cursor;
int ss_blank;
char ss_geom[256];
/* Tool status */
struct toolinfo *cur_tool;
/* Rubber band boxes and related stuff */
double start_corner_x;
double start_corner_y;
double drag_corner_x;
double drag_corner_y;
enum drag_reason drag_reason;
enum drag_status drag_status;
/* Stuff to do with drag and drop import of "content" */
int drag_preview_pending;
int have_drag_data;
int drag_highlight;
double import_width;
double import_height;
int import_acceptable;
/* All the images used in the presentation */
struct image_store *image_store;
unsigned int num_slides;
struct slide **slides;
};
extern struct presentation *new_presentation(void);
extern void free_presentation(struct presentation *p);
extern struct slide *new_slide(void);
extern struct slide *add_slide(struct presentation *p, int pos);
extern int insert_slide(struct presentation *p, struct slide *s, int pos);
extern void free_slide(struct slide *s);
extern void get_titlebar_string(struct presentation *p);
extern int add_object_to_slide(struct slide *s, struct object *o);
extern void remove_object_from_slide(struct slide *s, struct object *o);
extern struct object *find_object_at_position(struct slide *s,
double x, double y);
extern int slide_number(struct presentation *p, struct slide *s);
#define UNUSED __attribute__((unused))
#endif /* PRESENTATION_H */
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