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
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
|
/*
* testcard.c
*
* 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/>.
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "inhibit_screensaver.h"
#include "presentation.h"
struct testcard
{
GtkWidget *window;
char geom[256];
int slide_width;
int slide_height;
GtkWidget *drawingarea;
struct inhibit_sys *inhibit;
struct presentation *p;
};
static gint destroy_sig(GtkWidget *widget, struct testcard *tc)
{
free(tc);
return FALSE;
}
static void arrow_left(cairo_t *cr, double size)
{
cairo_rel_line_to(cr, size, size);
cairo_rel_line_to(cr, 0.0, -2*size);
cairo_rel_line_to(cr, -size, size);
}
static void arrow_right(cairo_t *cr, double size)
{
cairo_rel_line_to(cr, -size, size);
cairo_rel_line_to(cr, 0.0, -2*size);
cairo_rel_line_to(cr, size, size);
}
static void arrow_down(cairo_t *cr, double size)
{
cairo_rel_line_to(cr, -size, -size);
cairo_rel_line_to(cr, 2*size, 0.0);
cairo_rel_line_to(cr, -size, size);
}
static void arrow_up(cairo_t *cr, double size)
{
cairo_rel_line_to(cr, -size, size);
cairo_rel_line_to(cr, 2*size, 0.0);
cairo_rel_line_to(cr, -size, -size);
}
static gboolean draw_sig(GtkWidget *da, cairo_t *cr, struct testcard *tc)
{
double xoff, yoff;
double width, height;
int h;
PangoLayout *pl;
PangoFontDescription *desc;
char tmp[1024];
int plw, plh;
width = gtk_widget_get_allocated_width(GTK_WIDGET(da));
height = gtk_widget_get_allocated_height(GTK_WIDGET(da));
/* Overall background */
cairo_rectangle(cr, 0.0, 0.0, width, height);
cairo_set_source_rgb(cr, 0.0, 0.0, 1.0);
cairo_fill(cr);
/* FIXME: Assumes that monitor and slide sizes are such that
* letterboxing at sides. This needn't be the case. */
h = tc->slide_width * tc->p->slide_height / tc->p->slide_width;
/* Get the overall size */
xoff = (width - tc->slide_width)/2.0;
yoff = (height - h)/2.0;
/* Background of slide */
cairo_rectangle(cr, xoff, yoff, tc->slide_width, h);
cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
cairo_fill(cr);
snprintf(tmp, 1024, "Colloquium "PACKAGE_VERSION" test card\n"
"Screen resolution %.0f × %.0f\n"
"Slide resolution %i × %i", width, height,
tc->slide_width, h);
pl = pango_cairo_create_layout(cr);
desc = pango_font_description_from_string("Sans 24");
pango_layout_set_font_description(pl, desc);
pango_layout_set_text(pl, tmp, -1);
pango_layout_get_size(pl, &plw, &plh);
plw = pango_units_to_double(plw);
plh = pango_units_to_double(plh);
cairo_move_to(cr, (width-plw)/2, (height-plh)/2);
cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
pango_cairo_show_layout(cr, pl);
/* Arrows showing edges of screen */
cairo_move_to(cr, 0.0, height/2);
arrow_left(cr, 100.0);
cairo_fill(cr);
cairo_move_to(cr, width, height/2);
arrow_right(cr, 100.0);
cairo_fill(cr);
cairo_move_to(cr, width/2, height);
arrow_down(cr, 100.0);
cairo_fill(cr);
cairo_move_to(cr, width/2, 0.0);
arrow_up(cr, 100.0);
cairo_fill(cr);
/* Arrows showing edges of slide */
cairo_translate(cr, xoff, yoff);
cairo_set_source_rgb(cr, 0.5, 0.0, 0.0);
cairo_move_to(cr, 0.0, 100+h/2);
arrow_left(cr, 80.0);
cairo_fill(cr);
cairo_move_to(cr, tc->slide_width, 100+h/2);
arrow_right(cr, 80.0);
cairo_fill(cr);
cairo_move_to(cr, 100+tc->slide_width/2, h);
arrow_down(cr, 80.0);
cairo_fill(cr);
cairo_move_to(cr, 100+tc->slide_width/2, 0.0);
arrow_up(cr, 80.0);
cairo_fill(cr);
return FALSE;
}
static gboolean key_press_sig(GtkWidget *da, GdkEventKey *event,
struct testcard *tc)
{
gtk_widget_destroy(tc->window);
return FALSE;
}
static gboolean realize_sig(GtkWidget *w, struct testcard *tc)
{
gtk_window_parse_geometry(GTK_WINDOW(w), tc->geom);
return FALSE;
}
void show_testcard(struct presentation *p)
{
GdkScreen *screen;
int n_monitors;
int i;
struct testcard *tc;
double slide_width = 1024.0; /* Logical slide size */
double slide_height = 768.0; /* FIXME: Should come from slide */
tc = calloc(1, sizeof(struct testcard));
if ( tc == NULL ) return;
tc->p = p;
if ( tc->inhibit == NULL ) {
tc->inhibit = inhibit_prepare();
}
tc->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
tc->drawingarea = gtk_drawing_area_new();
gtk_container_add(GTK_CONTAINER(tc->window), tc->drawingarea);
gtk_widget_set_can_focus(GTK_WIDGET(tc->drawingarea), TRUE);
gtk_widget_add_events(GTK_WIDGET(tc->drawingarea), GDK_KEY_PRESS_MASK);
g_signal_connect(G_OBJECT(tc->drawingarea), "key-press-event",
G_CALLBACK(key_press_sig), tc);
g_signal_connect(G_OBJECT(tc->window), "destroy",
G_CALLBACK(destroy_sig), tc);
g_signal_connect(G_OBJECT(tc->window), "realize",
G_CALLBACK(realize_sig), tc);
g_signal_connect(G_OBJECT(tc->drawingarea), "draw",
G_CALLBACK(draw_sig), tc);
gtk_widget_grab_focus(GTK_WIDGET(tc->drawingarea));
screen = gdk_screen_get_default();
n_monitors = gdk_screen_get_n_monitors(screen);
for ( i=0; i<n_monitors; i++ ) {
GdkRectangle rect;
int w;
gdk_screen_get_monitor_geometry(screen, i, &rect);
snprintf(tc->geom, 255, "%ix%i+%i+%i",
rect.width, rect.height, rect.x, rect.y);
w = rect.height * slide_width/slide_height;
if ( w > rect.width ) w = rect.width;
tc->slide_width = w;
tc->slide_height = rect.height;
} /* FIXME: Sensible (configurable) choice of monitor */
gtk_window_fullscreen(GTK_WINDOW(tc->window));
gtk_widget_show_all(GTK_WIDGET(tc->window));
if ( tc->inhibit != NULL ) do_inhibit(tc->inhibit, 1);
}
|
