Mercurial > molko

comparison libmlk-core/mlk/core/window.c @ 431:8f59201dc76b

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
core: cleanup hierarchy
author David Demelier <markand@malikania.fr>
date Sat, 15 Oct 2022 20:23:14 +0200
parents src/libmlk-core/core/window.c@1645433e008d
children e1eebc6bf25d
comparison
equal deleted inserted replaced
430:1645433e008d 431:8f59201dc76b
1 /*
2 * window.c -- basic window management
3 *
4 * Copyright (c) 2020-2022 David Demelier <markand@malikania.fr>
5 *
6 * Permission to use, copy, modify, and/or distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <assert.h>
20 #include <string.h>
21
22 #include <SDL.h>
23
24 #include "err.h"
25 #include "util.h"
26 #include "window.h"
27 #include "window_p.h"
28
29 static struct window_handle handle = {
30 .win = NULL,
31 .renderer = NULL
32 };
33
34 static SDL_Cursor *cursors[WINDOW_CURSOR_LAST];
35
36 struct window window = {
37 .handle = &handle
38 };
39
40 static void
41 load_cursors(void)
42 {
43 cursors[WINDOW_CURSOR_ARROW] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW);
44 cursors[WINDOW_CURSOR_EDIT] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_IBEAM);
45 cursors[WINDOW_CURSOR_WAIT] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_WAIT);
46 cursors[WINDOW_CURSOR_CROSSHAIR] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_CROSSHAIR);
47 cursors[WINDOW_CURSOR_SIZE] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEALL);
48 cursors[WINDOW_CURSOR_NO] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NO);
49 cursors[WINDOW_CURSOR_HAND] = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_HAND);
50 }
51
52 static void
53 load_framerate(void)
54 {
55 SDL_DisplayMode mode;
56
57 if (SDL_GetWindowDisplayMode(handle.win, &mode) == 0)
58 window.framerate = mode.refresh_rate;
59 }
60
61 static void
62 finish_cursors(void)
63 {
64 for (size_t i = 0; i < UTIL_SIZE(cursors); ++i)
65 if (cursors[i])
66 SDL_FreeCursor(cursors[i]);
67 }
68
69 static int
70 load_window(const char *title, unsigned int w, unsigned int h)
71 {
72 return (handle.win = SDL_CreateWindow(title, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, w, h, 0)) != NULL;
73 }
74
75 static int
76 load_renderer(void)
77 {
78 return (handle.renderer = SDL_CreateRenderer(handle.win, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC)) != NULL;
79 }
80
81 int
82 window_open(const char *title, unsigned int w, unsigned int h)
83 {
84 assert(title);
85
86 if (!load_window(title, w, h) || !load_renderer())
87 return ERR_SDL;
88
89 window.w = w;
90 window.h = h;
91
92 load_framerate();
93 load_cursors();
94
95 return 0;
96 }
97
98 void
99 window_set_cursor(enum window_cursor cursor)
100 {
101 assert(cursor < WINDOW_CURSOR_LAST);
102
103 SDL_SetCursor(cursors[cursor]);
104 }
105
106 void
107 window_finish(void)
108 {
109 if (handle.renderer)
110 SDL_DestroyRenderer(handle.renderer);
111 if (handle.win)
112 SDL_DestroyWindow(handle.win);
113
114 finish_cursors();
115
116 memset(&handle, 0, sizeof (handle));
117 }