1 /*
2 Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
3
4 This software is provided 'as-is', without any express or implied
5 warranty. In no event will the authors be held liable for any damages
6 arising from the use of this software.
7
8 Permission is granted to anyone to use this software for any purpose,
9 including commercial applications, and to alter it and redistribute it
10 freely.
11 */
12
13 #include <stdlib.h>
14 #include <stdio.h>
15
16 #ifdef __EMSCRIPTEN__
17 #include <emscripten/emscripten.h>
18 #endif
19
20 #include "SDL_test_common.h"
21
22 /* Stolen from the mailing list */
23 /* Creates a new mouse cursor from an XPM */
24
25
26 /* XPM */
27 static const char *arrow[] = {
28 /* width height num_colors chars_per_pixel */
29 " 32 32 3 1",
30 /* colors */
31 "X c #000000",
32 ". c #ffffff",
33 " c None",
34 /* pixels */
35 "X ",
36 "XX ",
37 "X.X ",
38 "X..X ",
39 "X...X ",
40 "X....X ",
41 "X.....X ",
42 "X......X ",
43 "X.......X ",
44 "X........X ",
45 "X.....XXXXX ",
46 "X..X..X ",
47 "X.X X..X ",
48 "XX X..X ",
49 "X X..X ",
50 " X..X ",
51 " X..X ",
52 " X..X ",
53 " XX ",
54 " ",
55 " ",
56 " ",
57 " ",
58 " ",
59 " ",
60 " ",
61 " ",
62 " ",
63 " ",
64 " ",
65 " ",
66 " ",
67 "0,0"
68 };
69
70 static SDL_Cursor*
init_color_cursor(const char * file)71 init_color_cursor(const char *file)
72 {
73 SDL_Cursor *cursor = NULL;
74 SDL_Surface *surface = SDL_LoadBMP(file);
75 if (surface) {
76 if (surface->format->palette) {
77 SDL_SetColorKey(surface, 1, *(Uint8 *) surface->pixels);
78 } else {
79 switch (surface->format->BitsPerPixel) {
80 case 15:
81 SDL_SetColorKey(surface, 1, (*(Uint16 *)surface->pixels) & 0x00007FFF);
82 break;
83 case 16:
84 SDL_SetColorKey(surface, 1, *(Uint16 *)surface->pixels);
85 break;
86 case 24:
87 SDL_SetColorKey(surface, 1, (*(Uint32 *)surface->pixels) & 0x00FFFFFF);
88 break;
89 case 32:
90 SDL_SetColorKey(surface, 1, *(Uint32 *)surface->pixels);
91 break;
92 }
93 }
94 cursor = SDL_CreateColorCursor(surface, 0, 0);
95 SDL_FreeSurface(surface);
96 }
97 return cursor;
98 }
99
100 static SDL_Cursor*
init_system_cursor(const char * image[])101 init_system_cursor(const char *image[])
102 {
103 int i, row, col;
104 Uint8 data[4*32];
105 Uint8 mask[4*32];
106 int hot_x, hot_y;
107
108 i = -1;
109 for (row=0; row<32; ++row) {
110 for (col=0; col<32; ++col) {
111 if (col % 8) {
112 data[i] <<= 1;
113 mask[i] <<= 1;
114 } else {
115 ++i;
116 data[i] = mask[i] = 0;
117 }
118 switch (image[4+row][col]) {
119 case 'X':
120 data[i] |= 0x01;
121 mask[i] |= 0x01;
122 break;
123 case '.':
124 mask[i] |= 0x01;
125 break;
126 case ' ':
127 break;
128 }
129 }
130 }
131 SDL_sscanf(image[4+row], "%d,%d", &hot_x, &hot_y);
132 return SDL_CreateCursor(data, mask, 32, 32, hot_x, hot_y);
133 }
134
135 static SDLTest_CommonState *state;
136 int done;
137 static SDL_Cursor *cursors[1+SDL_NUM_SYSTEM_CURSORS];
138 static int current_cursor;
139 static int show_cursor;
140
141 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
142 static void
quit(int rc)143 quit(int rc)
144 {
145 SDLTest_CommonQuit(state);
146 exit(rc);
147 }
148
149 void
loop()150 loop()
151 {
152 int i;
153 SDL_Event event;
154 /* Check for events */
155 while (SDL_PollEvent(&event)) {
156 SDLTest_CommonEvent(state, &event, &done);
157 if (event.type == SDL_MOUSEBUTTONDOWN) {
158 if (event.button.button == SDL_BUTTON_LEFT) {
159 ++current_cursor;
160 if (current_cursor == SDL_arraysize(cursors)) {
161 current_cursor = 0;
162 }
163 SDL_SetCursor(cursors[current_cursor]);
164 } else {
165 show_cursor = !show_cursor;
166 SDL_ShowCursor(show_cursor);
167 }
168 }
169 }
170
171 for (i = 0; i < state->num_windows; ++i) {
172 SDL_Renderer *renderer = state->renderers[i];
173 SDL_RenderClear(renderer);
174 SDL_RenderPresent(renderer);
175 }
176 #ifdef __EMSCRIPTEN__
177 if (done) {
178 emscripten_cancel_main_loop();
179 }
180 #endif
181 }
182
183 int
main(int argc,char * argv[])184 main(int argc, char *argv[])
185 {
186 int i;
187 const char *color_cursor = NULL;
188
189 /* Enable standard application logging */
190 SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
191
192 /* Initialize test framework */
193 state = SDLTest_CommonCreateState(argv, SDL_INIT_VIDEO);
194 if (!state) {
195 return 1;
196 }
197 for (i = 1; i < argc;) {
198 int consumed;
199
200 consumed = SDLTest_CommonArg(state, i);
201 if (consumed == 0) {
202 color_cursor = argv[i];
203 break;
204 }
205 if (consumed < 0) {
206 SDLTest_CommonLogUsage(state, argv[0], NULL);
207 quit(1);
208 }
209 i += consumed;
210 }
211
212 if (!SDLTest_CommonInit(state)) {
213 quit(2);
214 }
215
216 for (i = 0; i < state->num_windows; ++i) {
217 SDL_Renderer *renderer = state->renderers[i];
218 SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
219 SDL_RenderClear(renderer);
220 }
221
222 if (color_cursor) {
223 cursors[0] = init_color_cursor(color_cursor);
224 } else {
225 cursors[0] = init_system_cursor(arrow);
226 }
227 if (!cursors[0]) {
228 SDL_Log("Error, couldn't create cursor\n");
229 quit(2);
230 }
231 for (i = 0; i < SDL_NUM_SYSTEM_CURSORS; ++i) {
232 cursors[1+i] = SDL_CreateSystemCursor((SDL_SystemCursor)i);
233 if (!cursors[1+i]) {
234 SDL_Log("Error, couldn't create system cursor %d\n", i);
235 quit(2);
236 }
237 }
238 SDL_SetCursor(cursors[0]);
239
240 /* Main render loop */
241 done = 0;
242 #ifdef __EMSCRIPTEN__
243 emscripten_set_main_loop(loop, 0, 1);
244 #else
245 while (!done) {
246 loop();
247 }
248 #endif
249
250 for (i = 0; i < SDL_arraysize(cursors); ++i) {
251 SDL_FreeCursor(cursors[i]);
252 }
253 quit(0);
254
255 /* keep the compiler happy ... */
256 return(0);
257 }
258
259 /* vi: set ts=4 sw=4 expandtab: */
260