1 /*
2 * Copyright © 2011 Kristian Høgsberg
3 * Copyright © 2011 Benjamin Franzke
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
20 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
21 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23 * DEALINGS IN THE SOFTWARE.
24 *
25 * Authors:
26 * Kristian Høgsberg <[email protected]>
27 * Benjamin Franzke <[email protected]>
28 */
29
30 #include <stdlib.h>
31 #include <string.h>
32
33 #include "wayland-egl.h"
34 #include "wayland-egl-backend.h"
35 #include "wayland-util.h"
36
37
38 /** Resize the EGL window
39 *
40 * \param egl_window A pointer to a struct wl_egl_window
41 * \param width The new width
42 * \param height The new height
43 * \param dx Offset on the X axis
44 * \param dy Offset on the Y axis
45 *
46 * Note that applications should prefer using the wl_surface.offset request if
47 * the associated wl_surface has the interface version 5 or higher.
48 *
49 * If the wl_surface.offset request is used, applications MUST pass 0 to both
50 * dx and dy.
51 */
52 WL_EXPORT void
wl_egl_window_resize(struct wl_egl_window * egl_window,int width,int height,int dx,int dy)53 wl_egl_window_resize(struct wl_egl_window *egl_window,
54 int width, int height,
55 int dx, int dy)
56 {
57 if (width <= 0 || height <= 0)
58 return;
59
60 egl_window->width = width;
61 egl_window->height = height;
62 egl_window->dx = dx;
63 egl_window->dy = dy;
64
65 if (egl_window->resize_callback)
66 egl_window->resize_callback(egl_window, egl_window->driver_private);
67 }
68
69 WL_EXPORT struct wl_egl_window *
wl_egl_window_create(struct wl_surface * surface,int width,int height)70 wl_egl_window_create(struct wl_surface *surface,
71 int width, int height)
72 {
73 struct wl_egl_window *egl_window;
74
75 if (width <= 0 || height <= 0)
76 return NULL;
77
78 egl_window = calloc(1, sizeof *egl_window);
79 if (!egl_window)
80 return NULL;
81
82 /* Cast away the constness to set the version number.
83 *
84 * We want the const notation since it gives an explicit
85 * feedback to the backend implementation, should it try to
86 * change it.
87 *
88 * The latter in itself is not too surprising as these days APIs
89 * tend to provide bidirectional version field.
90 */
91 intptr_t *version = (intptr_t *)&egl_window->version;
92 *version = WL_EGL_WINDOW_VERSION;
93
94 egl_window->surface = surface;
95
96 egl_window->width = width;
97 egl_window->height = height;
98
99 return egl_window;
100 }
101
102 WL_EXPORT void
wl_egl_window_destroy(struct wl_egl_window * egl_window)103 wl_egl_window_destroy(struct wl_egl_window *egl_window)
104 {
105 if (egl_window->destroy_window_callback)
106 egl_window->destroy_window_callback(egl_window->driver_private);
107 free(egl_window);
108 }
109
110 WL_EXPORT void
wl_egl_window_get_attached_size(struct wl_egl_window * egl_window,int * width,int * height)111 wl_egl_window_get_attached_size(struct wl_egl_window *egl_window,
112 int *width, int *height)
113 {
114 if (width)
115 *width = egl_window->attached_width;
116 if (height)
117 *height = egl_window->attached_height;
118 }
119