1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2012 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19 Sam Lantinga
20 slouken@libsdl.org
21 */
22 #include "SDL_config.h"
23
24 #include <X11/Xlib.h>
25 #include <X11/Xutil.h>
26
27 #include "SDL_version.h"
28 #include "SDL_timer.h"
29 #include "SDL_video.h"
30 #include "SDL_syswm.h"
31 #include "../SDL_pixels_c.h"
32 #include "../../events/SDL_events_c.h"
33 #include "SDL_x11modes_c.h"
34 #include "SDL_x11wm_c.h"
35
reverse_byte(Uint8 x)36 static Uint8 reverse_byte(Uint8 x)
37 {
38 x = (x & 0xaa) >> 1 | (x & 0x55) << 1;
39 x = (x & 0xcc) >> 2 | (x & 0x33) << 2;
40 x = (x & 0xf0) >> 4 | (x & 0x0f) << 4;
41 return x;
42 }
43
X11_SetIcon(_THIS,SDL_Surface * icon,Uint8 * mask)44 void X11_SetIcon(_THIS, SDL_Surface *icon, Uint8 *mask)
45 {
46 SDL_Surface *sicon;
47 XWMHints *wmhints;
48 XImage *icon_image;
49 Pixmap icon_pixmap;
50 Pixmap mask_pixmap;
51 Window icon_window = None;
52 GC gc;
53 XGCValues GCvalues;
54 int i, dbpp;
55 SDL_Rect bounds;
56 Uint8 *LSBmask;
57 Visual *dvis;
58 char *p;
59 int masksize;
60
61 SDL_Lock_EventThread();
62
63 /* The icon must use the default visual, depth and colormap of the
64 screen, so it might need a conversion */
65 dvis = DefaultVisual(SDL_Display, SDL_Screen);
66 dbpp = DefaultDepth(SDL_Display, SDL_Screen);
67 for(i = 0; i < this->hidden->nvisuals; i++) {
68 if(this->hidden->visuals[i].visual == dvis) {
69 dbpp = this->hidden->visuals[i].bpp;
70 break;
71 }
72 }
73
74 /* The Visual struct is supposed to be opaque but we cheat a little */
75 sicon = SDL_CreateRGBSurface(SDL_SWSURFACE, icon->w, icon->h,
76 dbpp,
77 dvis->red_mask, dvis->green_mask,
78 dvis->blue_mask, 0);
79 if ( sicon == NULL )
80 goto done;
81
82 if(dbpp == 8) {
83 /* Default visual is 8bit; we need to allocate colours from
84 the default colormap */
85 SDL_Color want[256], got[256];
86 int nwant;
87 Colormap dcmap;
88 int missing;
89 dcmap = DefaultColormap(SDL_Display, SDL_Screen);
90 if(icon->format->palette) {
91 /* The icon has a palette as well - we just have to
92 find those colours */
93 nwant = icon->format->palette->ncolors;
94 SDL_memcpy(want, icon->format->palette->colors,
95 nwant * sizeof want[0]);
96 } else {
97 /* try the standard 6x6x6 cube for lack of better
98 ideas */
99 int r, g, b, i;
100 for(r = i = 0; r < 256; r += 0x33)
101 for(g = 0; g < 256; g += 0x33)
102 for(b = 0; b < 256; b += 0x33, i++) {
103 want[i].r = r;
104 want[i].g = g;
105 want[i].b = b;
106 }
107 nwant = 216;
108 }
109 if(SDL_iconcolors) {
110 /* free already allocated colours first */
111 unsigned long freelist[512];
112 int nfree = 0;
113 for(i = 0; i < 256; i++) {
114 while(SDL_iconcolors[i]) {
115 freelist[nfree++] = i;
116 SDL_iconcolors[i]--;
117 }
118 }
119 XFreeColors(GFX_Display, dcmap, freelist, nfree, 0);
120 }
121 if(!SDL_iconcolors)
122 SDL_iconcolors = SDL_malloc(256 * sizeof *SDL_iconcolors);
123 SDL_memset(SDL_iconcolors, 0, 256 * sizeof *SDL_iconcolors);
124
125 /* try to allocate the colours */
126 SDL_memset(got, 0, sizeof got);
127 missing = 0;
128 for(i = 0; i < nwant; i++) {
129 XColor c;
130 c.red = want[i].r << 8;
131 c.green = want[i].g << 8;
132 c.blue = want[i].b << 8;
133 c.flags = DoRed | DoGreen | DoBlue;
134 if(XAllocColor(GFX_Display, dcmap, &c)) {
135 /* got the colour */
136 SDL_iconcolors[c.pixel]++;
137 got[c.pixel] = want[i];
138 } else {
139 missing = 1;
140 }
141 }
142 if(missing) {
143 /* Some colours were apparently missing, so we just
144 allocate all the rest as well */
145 XColor cols[256];
146 for(i = 0; i < 256; i++)
147 cols[i].pixel = i;
148 XQueryColors(GFX_Display, dcmap, cols, 256);
149 for(i = 0; i < 256; i++) {
150 got[i].r = cols[i].red >> 8;
151 got[i].g = cols[i].green >> 8;
152 got[i].b = cols[i].blue >> 8;
153 if(!SDL_iconcolors[i]) {
154 if(XAllocColor(GFX_Display, dcmap,
155 cols + i)) {
156 SDL_iconcolors[i] = 1;
157 } else {
158 /* index not available */
159 got[i].r = 0;
160 got[i].g = 0;
161 got[i].b = 0;
162 }
163 }
164 }
165 }
166
167 SDL_SetColors(sicon, got, 0, 256);
168 }
169
170 bounds.x = 0;
171 bounds.y = 0;
172 bounds.w = icon->w;
173 bounds.h = icon->h;
174 if ( SDL_LowerBlit(icon, &bounds, sicon, &bounds) < 0 )
175 goto done;
176
177 /* We need the mask as given, except in LSBfirst format instead of
178 MSBfirst. Reverse the bits in each byte. */
179 masksize = ((sicon->w + 7) >> 3) * sicon->h;
180 LSBmask = SDL_malloc(masksize);
181 if ( LSBmask == NULL ) {
182 goto done;
183 }
184 SDL_memset(LSBmask, 0, masksize);
185 for(i = 0; i < masksize; i++)
186 LSBmask[i] = reverse_byte(mask[i]);
187 mask_pixmap = XCreatePixmapFromBitmapData(SDL_Display, WMwindow,
188 (char *)LSBmask,
189 sicon->w, sicon->h,
190 1L, 0L, 1);
191
192 /* Transfer the image to an X11 pixmap */
193 icon_image = XCreateImage(SDL_Display,
194 DefaultVisual(SDL_Display, SDL_Screen),
195 DefaultDepth(SDL_Display, SDL_Screen),
196 ZPixmap, 0, sicon->pixels,
197 sicon->w, sicon->h,
198 32, 0);
199 icon_image->byte_order = (SDL_BYTEORDER == SDL_BIG_ENDIAN)
200 ? MSBFirst : LSBFirst;
201 icon_pixmap = XCreatePixmap(SDL_Display, SDL_Root, sicon->w, sicon->h,
202 DefaultDepth(SDL_Display, SDL_Screen));
203 gc = XCreateGC(SDL_Display, icon_pixmap, 0, &GCvalues);
204 XPutImage(SDL_Display, icon_pixmap, gc, icon_image,
205 0, 0, 0, 0, sicon->w, sicon->h);
206 XFreeGC(SDL_Display, gc);
207 XDestroyImage(icon_image);
208 SDL_free(LSBmask);
209 sicon->pixels = NULL;
210
211 /* Some buggy window managers (some versions of Enlightenment, it
212 seems) need an icon window *and* icon pixmap to work properly, while
213 it screws up others. The default is only to use a pixmap. */
214 p = SDL_getenv("SDL_VIDEO_X11_ICONWIN");
215 if(p && *p) {
216 icon_window = XCreateSimpleWindow(SDL_Display, SDL_Root,
217 0, 0, sicon->w, sicon->h, 0,
218 CopyFromParent,
219 CopyFromParent);
220 XSetWindowBackgroundPixmap(SDL_Display, icon_window,
221 icon_pixmap);
222 XClearWindow(SDL_Display, icon_window);
223 }
224
225 /* Set the window icon to the icon pixmap (and icon window) */
226 wmhints = XAllocWMHints();
227 wmhints->flags = (IconPixmapHint | IconMaskHint | InputHint);
228 wmhints->icon_pixmap = icon_pixmap;
229 wmhints->icon_mask = mask_pixmap;
230 wmhints->input = True;
231 if(icon_window != None) {
232 wmhints->flags |= IconWindowHint;
233 wmhints->icon_window = icon_window;
234 }
235 XSetWMHints(SDL_Display, WMwindow, wmhints);
236 XFree(wmhints);
237 XSync(SDL_Display, False);
238
239 done:
240 SDL_Unlock_EventThread();
241 SDL_FreeSurface(sicon);
242 }
243
X11_SetCaptionNoLock(_THIS,const char * title,const char * icon)244 void X11_SetCaptionNoLock(_THIS, const char *title, const char *icon)
245 {
246 XTextProperty titleprop, iconprop;
247 Status status;
248
249 #ifdef X_HAVE_UTF8_STRING
250 Atom _NET_WM_NAME = 0;
251 Atom _NET_WM_ICON_NAME = 0;
252
253 /* Look up some useful Atoms */
254 if (SDL_X11_HAVE_UTF8) {
255 _NET_WM_NAME = XInternAtom(SDL_Display, "_NET_WM_NAME", False);
256 _NET_WM_ICON_NAME = XInternAtom(SDL_Display, "_NET_WM_ICON_NAME", False);
257 }
258 #endif
259
260 if ( title != NULL ) {
261 char *title_locale = SDL_iconv_utf8_locale(title);
262 if ( !title_locale ) {
263 SDL_OutOfMemory();
264 return;
265 }
266 status = XStringListToTextProperty(&title_locale, 1, &titleprop);
267 SDL_free(title_locale);
268 if ( status ) {
269 XSetTextProperty(SDL_Display, WMwindow, &titleprop, XA_WM_NAME);
270 XFree(titleprop.value);
271 }
272 #ifdef X_HAVE_UTF8_STRING
273 if (SDL_X11_HAVE_UTF8) {
274 status = Xutf8TextListToTextProperty(SDL_Display,
275 (char **)&title, 1, XUTF8StringStyle, &titleprop);
276 if ( status == Success ) {
277 XSetTextProperty(SDL_Display, WMwindow, &titleprop, _NET_WM_NAME);
278 XFree(titleprop.value);
279 }
280 }
281 #endif
282 }
283 if ( icon != NULL ) {
284 char *icon_locale = SDL_iconv_utf8_locale(icon);
285 if ( !icon_locale ) {
286 SDL_OutOfMemory();
287 return;
288 }
289 status = XStringListToTextProperty(&icon_locale, 1, &iconprop);
290 SDL_free(icon_locale);
291 if ( status ) {
292 XSetTextProperty(SDL_Display, WMwindow, &iconprop, XA_WM_ICON_NAME);
293 XFree(iconprop.value);
294 }
295 #ifdef X_HAVE_UTF8_STRING
296 if (SDL_X11_HAVE_UTF8) {
297 status = Xutf8TextListToTextProperty(SDL_Display,
298 (char **)&icon, 1, XUTF8StringStyle, &iconprop);
299 if ( status == Success ) {
300 XSetTextProperty(SDL_Display, WMwindow, &iconprop, _NET_WM_ICON_NAME);
301 XFree(iconprop.value);
302 }
303 }
304 #endif
305 }
306 XSync(SDL_Display, False);
307 }
308
X11_SetCaption(_THIS,const char * title,const char * icon)309 void X11_SetCaption(_THIS, const char *title, const char *icon)
310 {
311 SDL_Lock_EventThread();
312 X11_SetCaptionNoLock(this, title, icon);
313 SDL_Unlock_EventThread();
314 }
315
316 /* Iconify the window */
X11_IconifyWindow(_THIS)317 int X11_IconifyWindow(_THIS)
318 {
319 int result;
320
321 SDL_Lock_EventThread();
322 result = XIconifyWindow(SDL_Display, WMwindow, SDL_Screen);
323 XSync(SDL_Display, False);
324 SDL_Unlock_EventThread();
325 return(result);
326 }
327
X11_GrabInputNoLock(_THIS,SDL_GrabMode mode)328 SDL_GrabMode X11_GrabInputNoLock(_THIS, SDL_GrabMode mode)
329 {
330 int result;
331
332 if ( this->screen == NULL || SDL_Display == NULL ) {
333 return(SDL_GRAB_OFF);
334 }
335 if ( ! SDL_Window ) {
336 return(mode); /* Will be set later on mode switch */
337 }
338 if ( mode == SDL_GRAB_OFF ) {
339 XUngrabPointer(SDL_Display, CurrentTime);
340 XUngrabKeyboard(SDL_Display, CurrentTime);
341 } else {
342 if ( this->screen->flags & SDL_FULLSCREEN ) {
343 /* Unbind the mouse from the fullscreen window */
344 XUngrabPointer(SDL_Display, CurrentTime);
345 }
346 /* Try to grab the mouse */
347 #if 0 /* We'll wait here until we actually grab, otherwise behavior undefined */
348 for ( numtries = 0; numtries < 10; ++numtries ) {
349 #else
350 for ( ; ; ) {
351 #endif
352 result = XGrabPointer(SDL_Display, SDL_Window, True, 0,
353 GrabModeAsync, GrabModeAsync,
354 SDL_Window, None, CurrentTime);
355 if ( result == GrabSuccess ) {
356 break;
357 }
358 SDL_Delay(100);
359 }
360 if ( result != GrabSuccess ) {
361 /* Uh, oh, what do we do here? */ ;
362 }
363 /* Now grab the keyboard */
364 XGrabKeyboard(SDL_Display, WMwindow, True,
365 GrabModeAsync, GrabModeAsync, CurrentTime);
366
367 /* Raise the window if we grab the mouse */
368 if ( !(this->screen->flags & SDL_FULLSCREEN) )
369 XRaiseWindow(SDL_Display, WMwindow);
370
371 /* Make sure we register input focus */
372 SDL_PrivateAppActive(1, SDL_APPINPUTFOCUS);
373 /* Since we grabbed the pointer, we have mouse focus, too. */
374 SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS);
375 }
376 XSync(SDL_Display, False);
377
378 return(mode);
379 }
380
381 SDL_GrabMode X11_GrabInput(_THIS, SDL_GrabMode mode)
382 {
383 SDL_Lock_EventThread();
384 mode = X11_GrabInputNoLock(this, mode);
385 SDL_Unlock_EventThread();
386
387 return(mode);
388 }
389
390 /* If 'info' is the right version, this function fills it and returns 1.
391 Otherwise, in case of a version mismatch, it returns -1.
392 */
393 static void lock_display(void)
394 {
395 SDL_Lock_EventThread();
396 }
397 static void unlock_display(void)
398 {
399 /* Make sure any X11 transactions are completed */
400 SDL_VideoDevice *this = current_video;
401 XSync(SDL_Display, False);
402 SDL_Unlock_EventThread();
403 }
404
405 #include <stdio.h>
406 int X11_GetWMInfo(_THIS, SDL_SysWMinfo *info)
407 {
408 if ( info->version.major <= SDL_MAJOR_VERSION ) {
409 info->subsystem = SDL_SYSWM_X11;
410 info->info.x11.display = SDL_Display;
411 info->info.x11.window = SDL_Window;
412 if ( SDL_VERSIONNUM(info->version.major,
413 info->version.minor,
414 info->version.patch) >= 1002 ) {
415 info->info.x11.fswindow = FSwindow;
416 info->info.x11.wmwindow = WMwindow;
417 }
418
419
420 if ( SDL_VERSIONNUM(info->version.major,
421 info->version.minor,
422 info->version.patch) >= 1212 ) {
423 info->info.x11.gfxdisplay = GFX_Display;
424 }
425
426 info->info.x11.lock_func = lock_display;
427 info->info.x11.unlock_func = unlock_display;
428 return(1);
429 } else {
430 SDL_SetError("Application not compiled with SDL %d.%d\n",
431 SDL_MAJOR_VERSION, SDL_MINOR_VERSION);
432 return(-1);
433 }
434 }
435