a118d79f67c6a6a559b4cbad93b6b713711de3ea
1 /*
2 * tpdfview - src/gtk-tpdfv-screen.c
3 * Copyright (C) 2011 Sebastian 'tokkee' Harl <sh@tokkee.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
28 /*
29 * This module provides an abstraction layer for virtual screens.
30 */
32 #include "gtk-tpdfv.h"
34 #include <assert.h>
35 #include <errno.h>
37 #include <gtk/gtk.h>
39 #include <stdlib.h>
41 typedef struct {
42 GdkScreen *screen;
43 gint n_monitor;
45 gint x;
46 gint y;
47 gint width;
48 gint height;
49 } screen_t;
51 struct gtk_tpdfv_screens {
52 gint num_screens;
53 screen_t *screens;
54 };
56 /*
57 * Private helper functions.
58 */
61 /*
62 * Public API.
63 */
65 gtk_tpdfv_screens_t *
66 gtk_tpdfv_screens_init(const gchar *display_name)
67 {
68 gtk_tpdfv_screens_t *screens;
70 GdkDisplay *gdk_disp;
71 gint screens_count;
73 gint i;
75 if (display_name)
76 gdk_disp = gdk_display_open(display_name);
77 else
78 gdk_disp = gdk_display_get_default();
80 if (! gdk_disp)
81 return NULL;
83 screens = (gtk_tpdfv_screens_t *)malloc(sizeof(*screens));
84 if (! screens)
85 return NULL;
87 screens->screens = NULL;
88 screens->num_screens = 0;
90 screens_count = gdk_display_get_n_screens(gdk_disp);
91 for (i = 0; i < screens_count; ++i) {
92 GdkScreen *gdk_screen = gdk_display_get_screen(gdk_disp, i);
94 gint monitors_count = gdk_screen_get_n_monitors(gdk_screen);
95 gint j;
97 for (j = 0; j < monitors_count; ++j) {
98 screen_t *screen;
100 GdkRectangle geo;
102 screen = (screen_t *)realloc(screens->screens,
103 (size_t)(screens->num_screens + 1) * sizeof(*screen));
104 if (! screen) {
105 if (screens->screens)
106 free(screens->screens);
107 free(screens);
108 return NULL;
109 }
111 screens->screens = screen;
112 screen = screens->screens + screens->num_screens;
113 ++screens->num_screens;
115 screen->screen = gdk_screen;
116 screen->n_monitor = j;
118 gdk_screen_get_monitor_geometry(gdk_screen, j, &geo);
119 screen->x = geo.x; screen->y = geo.y;
120 screen->width = geo.width; screen->height = geo.height;
121 }
122 }
123 return screens;
124 } /* gtk_tpdfv_new */
126 void
127 gtk_tpdfv_screens_destroy(gtk_tpdfv_screens_t *screens)
128 {
129 if (! screens)
130 return;
132 if (screens->screens)
133 free(screens->screens);
134 free(screens);
135 } /* gtk_tpdfv_destroy_screens */
137 gint
138 gtk_tpdfv_screens_number(const gtk_tpdfv_screens_t *screens)
139 {
140 if (! screens)
141 return -1;
142 return screens->num_screens;
143 } /* gtk_tpdfv_screens_number */
145 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */