SDL_x11wm.c
1
2
/*
SDL - Simple DirectMedia Layer
3
Copyright (C) 1997-2004 Sam Lantinga
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Sam Lantinga
20
slouken@libsdl.org
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
*/
#ifdef SAVE_RCSID
static char rcsid =
"@(#) $Id$";
#endif
#include <stdlib.h>
#include <string.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include "SDL_version.h"
#include "SDL_error.h"
#include "SDL_timer.h"
#include "SDL_video.h"
#include "SDL_syswm.h"
#include "SDL_events_c.h"
#include "SDL_pixels_c.h"
#include "SDL_x11modes_c.h"
#include "SDL_x11wm_c.h"
43
44
45
46
47
48
49
static Uint8 reverse_byte(Uint8 x)
{
x = (x & 0xaa) >> 1 | (x & 0x55) << 1;
x = (x & 0xcc) >> 2 | (x & 0x33) << 2;
x = (x & 0xf0) >> 4 | (x & 0x0f) << 4;
return x;
}
50
51
52
53
54
55
56
57
void X11_SetIcon(_THIS, SDL_Surface *icon, Uint8 *mask)
{
SDL_Surface *sicon;
XWMHints *wmhints;
XImage *icon_image;
Pixmap icon_pixmap;
Pixmap mask_pixmap;
58
59
Window icon_window = None;
GC gc;
60
XGCValues GCvalues;
61
int i, dbpp;
62
SDL_Rect bounds;
63
Uint8 *LSBmask;
64
Visual *dvis;
65
66
char *p;
int masksize;
67
68
69
70
71
SDL_Lock_EventThread();
/* The icon must use the default visual, depth and colormap of the
screen, so it might need a conversion */
72
dvis = DefaultVisual(SDL_Display, SDL_Screen);
73
dbpp = DefaultDepth(SDL_Display, SDL_Screen);
74
75
76
77
78
for(i = 0; i < this->hidden->nvisuals; i++) {
if(this->hidden->visuals[i].visual == dvis) {
dbpp = this->hidden->visuals[i].bpp;
break;
}
79
80
81
82
83
84
85
}
/* The Visual struct is supposed to be opaque but we cheat a little */
sicon = SDL_CreateRGBSurface(SDL_SWSURFACE, icon->w, icon->h,
dbpp,
dvis->red_mask, dvis->green_mask,
dvis->blue_mask, 0);
86
if ( sicon == NULL )
87
88
goto done;
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
if(dbpp == 8) {
/* Default visual is 8bit; we need to allocate colours from
the default colormap */
SDL_Color want[256], got[256];
int nwant;
Colormap dcmap;
int missing;
dcmap = DefaultColormap(SDL_Display, SDL_Screen);
if(icon->format->palette) {
/* The icon has a palette as well - we just have to
find those colours */
nwant = icon->format->palette->ncolors;
memcpy(want, icon->format->palette->colors,
nwant * sizeof want[0]);
} else {
/* try the standard 6x6x6 cube for lack of better
ideas */
int r, g, b, i;
for(r = i = 0; r < 256; r += 0x33)
for(g = 0; g < 256; g += 0x33)
for(b = 0; b < 256; b += 0x33, i++) {
want[i].r = r;
want[i].g = g;
want[i].b = b;
}
nwant = 216;
115
}
116
117
118
119
120
121
122
123
124
125
126
if(SDL_iconcolors) {
/* free already allocated colours first */
unsigned long freelist[512];
int nfree = 0;
for(i = 0; i < 256; i++) {
while(SDL_iconcolors[i]) {
freelist[nfree++] = i;
SDL_iconcolors[i]--;
}
}
XFreeColors(GFX_Display, dcmap, freelist, nfree, 0);
127
}
128
129
130
if(!SDL_iconcolors)
SDL_iconcolors = malloc(256 * sizeof *SDL_iconcolors);
memset(SDL_iconcolors, 0, 256 * sizeof *SDL_iconcolors);
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
/* try to allocate the colours */
memset(got, 0, sizeof got);
missing = 0;
for(i = 0; i < nwant; i++) {
XColor c;
c.red = want[i].r << 8;
c.green = want[i].g << 8;
c.blue = want[i].b << 8;
c.flags = DoRed | DoGreen | DoBlue;
if(XAllocColor(GFX_Display, dcmap, &c)) {
/* got the colour */
SDL_iconcolors[c.pixel]++;
got[c.pixel] = want[i];
} else {
missing = 1;
}
}
if(missing) {
/* Some colours were apparently missing, so we just
allocate all the rest as well */
XColor cols[256];
for(i = 0; i < 256; i++)
cols[i].pixel = i;
XQueryColors(GFX_Display, dcmap, cols, 256);
for(i = 0; i < 256; i++) {
got[i].r = cols[i].red >> 8;
got[i].g = cols[i].green >> 8;
got[i].b = cols[i].blue >> 8;
if(!SDL_iconcolors[i]) {
if(XAllocColor(GFX_Display, dcmap,
cols + i)) {
SDL_iconcolors[i] = 1;
} else {
/* index not available */
got[i].r = 0;
got[i].g = 0;
got[i].b = 0;
}
170
171
172
}
}
}
173
174
SDL_SetColors(sicon, got, 0, 256);
175
176
}
177
178
179
180
181
182
183
184
185
186
187
bounds.x = 0;
bounds.y = 0;
bounds.w = icon->w;
bounds.h = icon->h;
if ( SDL_LowerBlit(icon, &bounds, sicon, &bounds) < 0 )
goto done;
/* We need the mask as given, except in LSBfirst format instead of
MSBfirst. Reverse the bits in each byte. */
masksize = ((sicon->w + 7) >> 3) * sicon->h;
LSBmask = malloc(masksize);
188
189
190
if ( LSBmask == NULL ) {
goto done;
}
191
192
193
memset(LSBmask, 0, masksize);
for(i = 0; i < masksize; i++)
LSBmask[i] = reverse_byte(mask[i]);
194
mask_pixmap = XCreatePixmapFromBitmapData(SDL_Display, WMwindow,
195
196
197
(char *)LSBmask,
sicon->w, sicon->h,
1L, 0L, 1);
198
199
200
/* Transfer the image to an X11 pixmap */
icon_image = XCreateImage(SDL_Display,
201
202
203
204
205
DefaultVisual(SDL_Display, SDL_Screen),
DefaultDepth(SDL_Display, SDL_Screen),
ZPixmap, 0, sicon->pixels,
sicon->w, sicon->h,
32, 0);
206
207
icon_image->byte_order = (SDL_BYTEORDER == SDL_BIG_ENDIAN)
? MSBFirst : LSBFirst;
208
icon_pixmap = XCreatePixmap(SDL_Display, SDL_Root, sicon->w, sicon->h,
209
210
211
212
213
DefaultDepth(SDL_Display, SDL_Screen));
gc = XCreateGC(SDL_Display, icon_pixmap, 0, &GCvalues);
XPutImage(SDL_Display, icon_pixmap, gc, icon_image,
0, 0, 0, 0, sicon->w, sicon->h);
XFreeGC(SDL_Display, gc);
214
215
216
217
XDestroyImage(icon_image);
free(LSBmask);
sicon->pixels = NULL;
218
219
220
221
222
223
224
225
226
227
228
229
230
/* Some buggy window managers (some versions of Enlightenment, it
seems) need an icon window *and* icon pixmap to work properly, while
it screws up others. The default is only to use a pixmap. */
p = getenv("SDL_VIDEO_X11_ICONWIN");
if(p && *p) {
icon_window = XCreateSimpleWindow(SDL_Display, SDL_Root,
0, 0, sicon->w, sicon->h, 0,
CopyFromParent,
CopyFromParent);
XSetWindowBackgroundPixmap(SDL_Display, icon_window,
icon_pixmap);
XClearWindow(SDL_Display, icon_window);
}
231
232
233
234
235
236
/* Set the window icon to the icon pixmap (and icon window) */
wmhints = XAllocWMHints();
wmhints->flags = (IconPixmapHint | IconMaskHint);
wmhints->icon_pixmap = icon_pixmap;
wmhints->icon_mask = mask_pixmap;
237
238
239
240
if(icon_window != None) {
wmhints->flags |= IconWindowHint;
wmhints->icon_window = icon_window;
}
241
242
243
244
245
246
XSetWMHints(SDL_Display, WMwindow, wmhints);
XFree(wmhints);
XSync(SDL_Display, False);
done:
SDL_Unlock_EventThread();
247
SDL_FreeSurface(sicon);
248
249
250
251
252
253
254
255
256
257
}
void X11_SetCaption(_THIS, const char *title, const char *icon)
{
XTextProperty titleprop, iconprop;
/* Lock the event thread, in multi-threading environments */
SDL_Lock_EventThread();
if ( title != NULL ) {
258
int error = XLocaleNotSupported;
259
#ifdef X_HAVE_UTF8_STRING
260
261
262
error = Xutf8TextListToTextProperty(SDL_Display,
(char **)&title, 1, XUTF8StringStyle,
&titleprop);
264
265
266
267
if ( error != Success ) {
XStringListToTextProperty((char **)&title, 1,
&titleprop);
}
268
269
270
271
XSetWMName(SDL_Display, WMwindow, &titleprop);
XFree(titleprop.value);
}
if ( icon != NULL ) {
272
int error = XLocaleNotSupported;
273
#ifdef X_HAVE_UTF8_STRING
274
275
error = Xutf8TextListToTextProperty(SDL_Display,
(char **)&icon, 1, XUTF8StringStyle, &iconprop);
277
278
279
if ( error != Success ) {
XStringListToTextProperty((char **)&icon, 1, &iconprop);
}
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
XSetWMIconName(SDL_Display, WMwindow, &iconprop);
XFree(iconprop.value);
}
XSync(SDL_Display, False);
SDL_Unlock_EventThread();
}
/* Iconify the window */
int X11_IconifyWindow(_THIS)
{
int result;
SDL_Lock_EventThread();
result = XIconifyWindow(SDL_Display, WMwindow, SDL_Screen);
XSync(SDL_Display, False);
SDL_Unlock_EventThread();
return(result);
}
SDL_GrabMode X11_GrabInputNoLock(_THIS, SDL_GrabMode mode)
{
302
int result;
303
304
305
306
307
308
309
310
311
if ( this->screen == NULL ) {
return(SDL_GRAB_OFF);
}
if ( ! SDL_Window ) {
return(mode); /* Will be set later on mode switch */
}
if ( mode == SDL_GRAB_OFF ) {
XUngrabPointer(SDL_Display, CurrentTime);
312
XUngrabKeyboard(SDL_Display, CurrentTime);
313
314
315
316
317
318
} else {
if ( this->screen->flags & SDL_FULLSCREEN ) {
/* Unbind the mouse from the fullscreen window */
XUngrabPointer(SDL_Display, CurrentTime);
}
/* Try to grab the mouse */
319
#if 0 /* We'll wait here until we actually grab, otherwise behavior undefined */
320
for ( numtries = 0; numtries < 10; ++numtries ) {
321
322
323
#else
while ( 1 ) {
#endif
324
325
326
result = XGrabPointer(SDL_Display, SDL_Window, True, 0,
GrabModeAsync, GrabModeAsync,
SDL_Window, None, CurrentTime);
327
if ( result == GrabSuccess ) {
328
329
330
331
break;
}
SDL_Delay(100);
}
332
333
334
if ( result != GrabSuccess ) {
/* Uh, oh, what do we do here? */ ;
}
335
336
/* Now grab the keyboard */
XGrabKeyboard(SDL_Display, WMwindow, True,
337
GrabModeAsync, GrabModeAsync, CurrentTime);
338
339
340
341
/* Raise the window if we grab the mouse */
if ( !(this->screen->flags & SDL_FULLSCREEN) )
XRaiseWindow(SDL_Display, WMwindow);
342
343
344
/* Make sure we register input focus */
SDL_PrivateAppActive(1, SDL_APPINPUTFOCUS);
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
}
XSync(SDL_Display, False);
return(mode);
}
SDL_GrabMode X11_GrabInput(_THIS, SDL_GrabMode mode)
{
SDL_Lock_EventThread();
mode = X11_GrabInputNoLock(this, mode);
SDL_Unlock_EventThread();
return(mode);
}
/* If 'info' is the right version, this function fills it and returns 1.
Otherwise, in case of a version mismatch, it returns -1.
*/
static void lock_display(void)
{
SDL_Lock_EventThread();
}
static void unlock_display(void)
{
/* Make sure any X11 transactions are completed */
SDL_VideoDevice *this = current_video;
XSync(SDL_Display, False);
SDL_Unlock_EventThread();
}
int X11_GetWMInfo(_THIS, SDL_SysWMinfo *info)
{
if ( info->version.major <= SDL_MAJOR_VERSION ) {
info->subsystem = SDL_SYSWM_X11;
info->info.x11.display = SDL_Display;
info->info.x11.window = SDL_Window;
if ( SDL_VERSIONNUM(info->version.major,
info->version.minor,
info->version.patch) >= 1002 ) {
info->info.x11.fswindow = FSwindow;
info->info.x11.wmwindow = WMwindow;
}
info->info.x11.lock_func = lock_display;
info->info.x11.unlock_func = unlock_display;
return(1);
} else {
SDL_SetError("Application not compiled with SDL %d.%d\n",
SDL_MAJOR_VERSION, SDL_MINOR_VERSION);
return(-1);
}
}