1
2 /* Test out the window manager interaction functions */
3
4 #include <stdio.h>
5 #include <stdlib.h>
6 #include <string.h>
7
8 #include "SDL.h"
9
10 /* Is the cursor visible? */
11 static int visible = 1;
12
13 static Uint8 video_bpp;
14 static Uint32 video_flags;
15
16 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
quit(int rc)17 static void quit(int rc)
18 {
19 SDL_Quit();
20 exit(rc);
21 }
22
SetVideoMode(int w,int h)23 int SetVideoMode(int w, int h)
24 {
25 SDL_Surface *screen;
26 int i;
27 Uint8 *buffer;
28 SDL_Color palette[256];
29
30 screen = SDL_SetVideoMode(w, h, video_bpp, video_flags);
31 if ( screen == NULL ) {
32 fprintf(stderr, "Couldn't set %dx%dx%d video mode: %s\n",
33 w, h, video_bpp, SDL_GetError());
34 return(-1);
35 }
36 printf("Running in %s mode\n", screen->flags & SDL_FULLSCREEN ?
37 "fullscreen" : "windowed");
38
39 /* Set the surface pixels and refresh! */
40 for ( i=0; i<256; ++i ) {
41 palette[i].r = 255-i;
42 palette[i].g = 255-i;
43 palette[i].b = 255-i;
44 }
45 SDL_SetColors(screen, palette, 0, 256);
46 if ( SDL_LockSurface(screen) < 0 ) {
47 fprintf(stderr, "Couldn't lock display surface: %s\n",
48 SDL_GetError());
49 return(-1);
50 }
51 buffer = (Uint8 *)screen->pixels;
52 for ( i=0; i<screen->h; ++i ) {
53 memset(buffer,(i*255)/screen->h,
54 screen->w*screen->format->BytesPerPixel);
55 buffer += screen->pitch;
56 }
57 SDL_UnlockSurface(screen);
58 SDL_UpdateRect(screen, 0, 0, 0, 0);
59
60 return(0);
61 }
62
LoadIconSurface(char * file,Uint8 ** maskp)63 SDL_Surface *LoadIconSurface(char *file, Uint8 **maskp)
64 {
65 SDL_Surface *icon;
66 Uint8 *pixels;
67 Uint8 *mask;
68 int mlen, i, j;
69
70 *maskp = NULL;
71
72 /* Load the icon surface */
73 icon = SDL_LoadBMP(file);
74 if ( icon == NULL ) {
75 fprintf(stderr, "Couldn't load %s: %s\n", file, SDL_GetError());
76 return(NULL);
77 }
78
79 /* Check width and height
80 if ( (icon->w%8) != 0 ) {
81 fprintf(stderr, "Icon width must be a multiple of 8!\n");
82 SDL_FreeSurface(icon);
83 return(NULL);
84 }
85 */
86
87
88 if ( icon->format->palette == NULL ) {
89 fprintf(stderr, "Icon must have a palette!\n");
90 SDL_FreeSurface(icon);
91 return(NULL);
92 }
93
94 /* Set the colorkey */
95 SDL_SetColorKey(icon, SDL_SRCCOLORKEY, *((Uint8 *)icon->pixels));
96
97 /* Create the mask */
98 pixels = (Uint8 *)icon->pixels;
99 printf("Transparent pixel: (%d,%d,%d)\n",
100 icon->format->palette->colors[*pixels].r,
101 icon->format->palette->colors[*pixels].g,
102 icon->format->palette->colors[*pixels].b);
103 mlen = (icon->w*icon->h + 7) / 8;
104 mask = (Uint8 *)malloc(mlen);
105 if ( mask == NULL ) {
106 fprintf(stderr, "Out of memory!\n");
107 SDL_FreeSurface(icon);
108 return(NULL);
109 }
110 memset(mask, 0, mlen);
111 for ( i=0; i < icon->h; i++)
112 for (j=0; j < icon->w; j++) {
113 int pindex = i * icon->pitch + j;
114 int mindex = i * icon->w + j;
115 if ( pixels[pindex] != *pixels )
116 mask[mindex>>3] |= 1 << (7 - (mindex & 7));
117 }
118 *maskp = mask;
119 return(icon);
120 }
121
HotKey_ToggleFullScreen(void)122 void HotKey_ToggleFullScreen(void)
123 {
124 SDL_Surface *screen;
125
126 screen = SDL_GetVideoSurface();
127 if ( SDL_WM_ToggleFullScreen(screen) ) {
128 printf("Toggled fullscreen mode - now %s\n",
129 (screen->flags&SDL_FULLSCREEN) ? "fullscreen" : "windowed");
130 } else {
131 printf("Unable to toggle fullscreen mode\n");
132 video_flags ^= SDL_FULLSCREEN;
133 SetVideoMode(screen->w, screen->h);
134 }
135 }
136
HotKey_ToggleGrab(void)137 void HotKey_ToggleGrab(void)
138 {
139 SDL_GrabMode mode;
140
141 printf("Ctrl-G: toggling input grab!\n");
142 mode = SDL_WM_GrabInput(SDL_GRAB_QUERY);
143 if ( mode == SDL_GRAB_ON ) {
144 printf("Grab was on\n");
145 } else {
146 printf("Grab was off\n");
147 }
148 mode = SDL_WM_GrabInput(mode ? SDL_GRAB_OFF : SDL_GRAB_ON);
149 if ( mode == SDL_GRAB_ON ) {
150 printf("Grab is now on\n");
151 } else {
152 printf("Grab is now off\n");
153 }
154 }
155
HotKey_Iconify(void)156 void HotKey_Iconify(void)
157 {
158 printf("Ctrl-Z: iconifying window!\n");
159 SDL_WM_IconifyWindow();
160 }
161
HotKey_Quit(void)162 void HotKey_Quit(void)
163 {
164 SDL_Event event;
165
166 printf("Posting internal quit request\n");
167 event.type = SDL_USEREVENT;
168 SDL_PushEvent(&event);
169 }
170
print_modifiers(void)171 static void print_modifiers(void)
172 {
173 int mod;
174 printf(" modifiers:");
175 mod = SDL_GetModState();
176 if(!mod) {
177 printf(" (none)");
178 return;
179 }
180 if(mod & KMOD_LSHIFT)
181 printf(" LSHIFT");
182 if(mod & KMOD_RSHIFT)
183 printf(" RSHIFT");
184 if(mod & KMOD_LCTRL)
185 printf(" LCTRL");
186 if(mod & KMOD_RCTRL)
187 printf(" RCTRL");
188 if(mod & KMOD_LALT)
189 printf(" LALT");
190 if(mod & KMOD_RALT)
191 printf(" RALT");
192 if(mod & KMOD_LMETA)
193 printf(" LMETA");
194 if(mod & KMOD_RMETA)
195 printf(" RMETA");
196 if(mod & KMOD_NUM)
197 printf(" NUM");
198 if(mod & KMOD_CAPS)
199 printf(" CAPS");
200 if(mod & KMOD_MODE)
201 printf(" MODE");
202 }
203
PrintKey(const SDL_keysym * sym,int pressed)204 static void PrintKey(const SDL_keysym *sym, int pressed)
205 {
206 /* Print the keycode, name and state */
207 if ( sym->sym ) {
208 printf("Key %s: %d-%s ", pressed ? "pressed" : "released",
209 sym->sym, SDL_GetKeyName(sym->sym));
210 } else {
211 printf("Unknown Key (scancode = %d) %s ", sym->scancode,
212 pressed ? "pressed" : "released");
213 }
214
215 /* Print the translated character, if one exists */
216 if ( sym->unicode ) {
217 /* Is it a control-character? */
218 if ( sym->unicode < ' ' ) {
219 printf(" (^%c)", sym->unicode+'@');
220 } else {
221 #ifdef UNICODE
222 printf(" (%c)", sym->unicode);
223 #else
224 /* This is a Latin-1 program, so only show 8-bits */
225 if ( !(sym->unicode & 0xFF00) )
226 printf(" (%c)", sym->unicode);
227 else
228 printf(" (0x%X)", sym->unicode);
229 #endif
230 }
231 }
232 print_modifiers();
233 printf("\n");
234 }
235
FilterEvents(const SDL_Event * event)236 int SDLCALL FilterEvents(const SDL_Event *event)
237 {
238 static int reallyquit = 0;
239
240 switch (event->type) {
241
242 case SDL_ACTIVEEVENT:
243 /* See what happened */
244 printf("App %s ",
245 event->active.gain ? "gained" : "lost");
246 if ( event->active.state & SDL_APPACTIVE )
247 printf("active ");
248 if ( event->active.state & SDL_APPINPUTFOCUS )
249 printf("input ");
250 if ( event->active.state & SDL_APPMOUSEFOCUS )
251 printf("mouse ");
252 printf("focus\n");
253
254 /* See if we are iconified or restored */
255 if ( event->active.state & SDL_APPACTIVE ) {
256 printf("App has been %s\n",
257 event->active.gain ?
258 "restored" : "iconified");
259 }
260 return(0);
261
262 /* We want to toggle visibility on buttonpress */
263 case SDL_MOUSEBUTTONDOWN:
264 case SDL_MOUSEBUTTONUP:
265 if ( event->button.state == SDL_PRESSED ) {
266 visible = !visible;
267 SDL_ShowCursor(visible);
268 }
269 printf("Mouse button %d has been %s\n",
270 event->button.button,
271 (event->button.state == SDL_PRESSED) ?
272 "pressed" : "released");
273 return(0);
274
275 /* Show relative mouse motion */
276 case SDL_MOUSEMOTION:
277 #if 0
278 printf("Mouse motion: {%d,%d} (%d,%d)\n",
279 event->motion.x, event->motion.y,
280 event->motion.xrel, event->motion.yrel);
281 #endif
282 return(0);
283
284 case SDL_KEYDOWN:
285 PrintKey(&event->key.keysym, 1);
286 if ( event->key.keysym.sym == SDLK_ESCAPE ) {
287 HotKey_Quit();
288 }
289 if ( (event->key.keysym.sym == SDLK_g) &&
290 (event->key.keysym.mod & KMOD_CTRL) ) {
291 HotKey_ToggleGrab();
292 }
293 if ( (event->key.keysym.sym == SDLK_z) &&
294 (event->key.keysym.mod & KMOD_CTRL) ) {
295 HotKey_Iconify();
296 }
297 if ( (event->key.keysym.sym == SDLK_RETURN) &&
298 (event->key.keysym.mod & KMOD_ALT) ) {
299 HotKey_ToggleFullScreen();
300 }
301 return(0);
302
303 case SDL_KEYUP:
304 PrintKey(&event->key.keysym, 0);
305 return(0);
306
307 /* Pass the video resize event through .. */
308 case SDL_VIDEORESIZE:
309 return(1);
310
311 /* This is important! Queue it if we want to quit. */
312 case SDL_QUIT:
313 if ( ! reallyquit ) {
314 reallyquit = 1;
315 printf("Quit requested\n");
316 return(0);
317 }
318 printf("Quit demanded\n");
319 return(1);
320
321 /* This will never happen because events queued directly
322 to the event queue are not filtered.
323 */
324 case SDL_USEREVENT:
325 return(1);
326
327 /* Drop all other events */
328 default:
329 return(0);
330 }
331 }
332
main(int argc,char * argv[])333 int main(int argc, char *argv[])
334 {
335 SDL_Event event;
336 char *title;
337 SDL_Surface *icon;
338 Uint8 *icon_mask;
339 int parsed;
340 int w, h;
341
342 if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) {
343 fprintf(stderr,
344 "Couldn't initialize SDL: %s\n", SDL_GetError());
345 return(1);
346 }
347
348 /* Check command line arguments */
349 w = 640;
350 h = 480;
351 video_bpp = 8;
352 video_flags = SDL_SWSURFACE;
353 parsed = 1;
354 while ( parsed ) {
355 if ( (argc >= 2) && (strcmp(argv[1], "-fullscreen") == 0) ) {
356 video_flags |= SDL_FULLSCREEN;
357 argc -= 1;
358 argv += 1;
359 } else
360 if ( (argc >= 2) && (strcmp(argv[1], "-resize") == 0) ) {
361 video_flags |= SDL_RESIZABLE;
362 argc -= 1;
363 argv += 1;
364 } else
365 if ( (argc >= 2) && (strcmp(argv[1], "-noframe") == 0) ) {
366 video_flags |= SDL_NOFRAME;
367 argc -= 1;
368 argv += 1;
369 } else
370 if ( (argc >= 3) && (strcmp(argv[1], "-width") == 0) ) {
371 w = atoi(argv[2]);
372 argc -= 2;
373 argv += 2;
374 } else
375 if ( (argc >= 3) && (strcmp(argv[1], "-height") == 0) ) {
376 h = atoi(argv[2]);
377 argc -= 2;
378 argv += 2;
379 } else
380 if ( (argc >= 3) && (strcmp(argv[1], "-bpp") == 0) ) {
381 video_bpp = atoi(argv[2]);
382 argc -= 2;
383 argv += 2;
384 } else {
385 parsed = 0;
386 }
387 }
388
389 /* Set the icon -- this must be done before the first mode set */
390 icon = LoadIconSurface("icon.bmp", &icon_mask);
391 if ( icon != NULL ) {
392 SDL_WM_SetIcon(icon, icon_mask);
393 }
394 if ( icon_mask != NULL )
395 free(icon_mask);
396
397 /* Set the title bar */
398 if ( argv[1] == NULL )
399 title = "Testing 1.. 2.. 3...";
400 else
401 title = argv[1];
402 SDL_WM_SetCaption(title, "testwm");
403
404 /* See if it's really set */
405 SDL_WM_GetCaption(&title, NULL);
406 if ( title )
407 printf("Title was set to: %s\n", title);
408 else
409 printf("No window title was set!\n");
410
411 /* Initialize the display */
412 if ( SetVideoMode(w, h) < 0 ) {
413 quit(1);
414 }
415
416 /* Set an event filter that discards everything but QUIT */
417 SDL_SetEventFilter(FilterEvents);
418
419 /* Loop, waiting for QUIT */
420 while ( SDL_WaitEvent(&event) ) {
421 switch (event.type) {
422 case SDL_VIDEORESIZE:
423 printf("Got a resize event: %dx%d\n",
424 event.resize.w, event.resize.h);
425 SetVideoMode(event.resize.w, event.resize.h);
426 break;
427 case SDL_USEREVENT:
428 printf("Handling internal quit request\n");
429 /* Fall through to the quit handler */
430 case SDL_QUIT:
431 printf("Bye bye..\n");
432 quit(0);
433 default:
434 /* This should never happen */
435 printf("Warning: Event %d wasn't filtered\n",
436 event.type);
437 break;
438 }
439 }
440 printf("SDL_WaitEvent() error: %s\n", SDL_GetError());
441 SDL_Quit();
442 return(255);
443 }
444