aboutsummaryrefslogtreecommitdiff
path: root/src/presentation.h
blob: 3a781d9227654a708a68f0a9b3d597bf8c211898 (plain)
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
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
/*
 * 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;
	struct object *roles[NUM_S_ROLES];

	/* 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
{
	GtkWidget *tbox;

	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 slide *s, 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 presentation *p);

	struct object *(*deserialize)(struct presentation *p,
	                              struct ds_node *root,
	                              struct toolinfo *tip);
};


struct prefs
{
	int b_splits;
};


struct presentation
{
	char             *titlebar;
	char             *filename;
	int               completely_empty;
	int              *num_presentations;

	struct prefs     *prefs;

	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;
	GtkWidget        *cur_tbox;

	/* Pointers to the current "editing" and "projection" slides */
	struct slide     *cur_edit_slide;
	struct slide     *cur_proj_slide;
	int               slideshow_linked;

	/* 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 */