x11-init.c - vx32 - Local 9vx git repository for patches.
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x11-init.c (19677B)
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1 #include "u.h"
2 #include "lib.h"
3 #include "mem.h"
4 #include "dat.h"
5 #include "fns.h"
6 #include "error.h"
7 #define Image IMAGE /* kernel has its own Image */
8 #include <draw.h>
9 #include <memdraw.h>
10 #include <keyboard.h>
11 #include <cursor.h>
12 #include "screen.h"
13 #include "x11-inc.h"
14
15 #define argv0 "vxplan9"
16
17 Xprivate _x;
18
19 static int parsewinsize(char *s, Rectangle *r, int *havemin);
20 static void plan9cmap(void);
21 static XGC xgc(XDrawable, int, int);
22 static int setupcmap(XWindow);
23
24 static int
25 xerror(XDisplay *d, XErrorEvent *e)
26 {
27 char buf[200];
28
29 if(e->request_code == 42) /* XSetInputFocus */
30 return 0;
31 if(e->request_code == 18) /* XChangeProperty */
32 return 0;
33 /*
34 * BadDrawable happens in apps that get resized a LOT,
35 * e.g. when KDE is configured to resize continuously
36 * during a window drag.
37 */
38 if(e->error_code == 9) /* BadDrawable */
39 return 0;
40
41 fprint(2, "X error: error_code=%d, request_code=%d, minor=%d disp=%p\n",
42 e->error_code, e->request_code, e->minor_code, d);
43 XGetErrorText(d, e->error_code, buf, sizeof buf);
44 fprint(2, "%s\n", buf);
45 return 0;
46 }
47
48 static int
49 xioerror(XDisplay *d)
50 {
51 /*print("X I/O error\n"); */
52 restoretty();
53 exit(0);
54 /*sysfatal("X I/O error\n");*/
55 abort();
56 return -1;
57 }
58
59 Memimage*
60 _xattach(char *label, char *winsize)
61 {
62 char *argv[2], *disp;
63 int i, havemin, height, mask, n, width, x, xrootid, y;
64 Rectangle r;
65 XClassHint classhint;
66 XDrawable pmid;
67 XPixmapFormatValues *pfmt;
68 XScreen *xscreen;
69 XSetWindowAttributes attr;
70 XSizeHints normalhint;
71 XTextProperty name;
72 XVisualInfo xvi;
73 XWindow xrootwin;
74 XWindowAttributes wattr;
75 XWMHints hint;
76 Atom atoms[2];
77
78 /*
79 if(XInitThreads() == 0){
80 fprint(2, "XInitThreads failed\n");
81 abort();
82 }
83 */
84
85 /*
86 * Connect to X server.
87 */
88 _x.display = XOpenDisplay(NULL);
89 if(_x.display == nil){
90 disp = getenv("DISPLAY");
91 werrstr("XOpenDisplay %s: %r", disp ? disp : ":0");
92 free(disp);
93 return nil;
94 }
95 _x.fd = ConnectionNumber(_x.display);
96 XSetErrorHandler(xerror);
97 XSetIOErrorHandler(xioerror);
98 xrootid = DefaultScreen(_x.display);
99 xrootwin = DefaultRootWindow(_x.display);
100
101 /*
102 * Figure out underlying screen format.
103 */
104 if(XMatchVisualInfo(_x.display, xrootid, 16, TrueColor, &xvi)
105 || XMatchVisualInfo(_x.display, xrootid, 16, DirectColor, &xvi)){
106 _x.vis = xvi.visual;
107 _x.depth = 16;
108 }
109 else
110 if(XMatchVisualInfo(_x.display, xrootid, 15, TrueColor, &xvi)
111 || XMatchVisualInfo(_x.display, xrootid, 15, DirectColor, &xvi)){
112 _x.vis = xvi.visual;
113 _x.depth = 15;
114 }
115 else
116 if(XMatchVisualInfo(_x.display, xrootid, 24, TrueColor, &xvi)
117 || XMatchVisualInfo(_x.display, xrootid, 24, DirectColor, &xvi)){
118 _x.vis = xvi.visual;
119 _x.depth = 24;
120 }
121 else
122 if(XMatchVisualInfo(_x.display, xrootid, 8, PseudoColor, &xvi)
123 || XMatchVisualInfo(_x.display, xrootid, 8, StaticColor, &xvi)){
124 if(_x.depth > 8){
125 werrstr("can't deal with colormapped depth %d screens",
126 _x.depth);
127 goto err0;
128 }
129 _x.vis = xvi.visual;
130 _x.depth = 8;
131 }
132 else{
133 _x.depth = DefaultDepth(_x.display, xrootid);
134 if(_x.depth != 8){
135 werrstr("can't understand depth %d screen", _x.depth);
136 goto err0;
137 }
138 _x.vis = DefaultVisual(_x.display, xrootid);
139 }
140
141 if(DefaultDepth(_x.display, xrootid) == _x.depth)
142 _x.usetable = 1;
143
144 /*
145 * _x.depth is only the number of significant pixel bits,
146 * not the total number of pixel bits. We need to walk the
147 * display list to find how many actual bits are used
148 * per pixel.
149 */
150 _x.chan = 0;
151 pfmt = XListPixmapFormats(_x.display, &n);
152 for(i=0; i<n; i++){
153 if(pfmt[i].depth == _x.depth){
154 switch(pfmt[i].bits_per_pixel){
155 case 1: /* untested */
156 _x.chan = GREY1;
157 break;
158 case 2: /* untested */
159 _x.chan = GREY2;
160 break;
161 case 4: /* untested */
162 _x.chan = GREY4;
163 break;
164 case 8:
165 _x.chan = CMAP8;
166 break;
167 case 15:
168 _x.chan = RGB15;
169 break;
170 case 16: /* how to tell RGB15? */
171 _x.chan = RGB16;
172 break;
173 case 24: /* untested (impossible?) */
174 _x.chan = RGB24;
175 break;
176 case 32:
177 _x.chan = XRGB32;
178 break;
179 }
180 }
181 }
182 if(_x.chan == 0){
183 werrstr("could not determine screen pixel format");
184 goto err0;
185 }
186
187 /*
188 * Set up color map if necessary.
189 */
190 xscreen = DefaultScreenOfDisplay(_x.display);
191 _x.cmap = DefaultColormapOfScreen(xscreen);
192 if(_x.vis->class != StaticColor){
193 plan9cmap();
194 setupcmap(xrootwin);
195 }
196
197 /*
198 * We get to choose the initial rectangle size.
199 * This is arbitrary. In theory we should read the
200 * command line and allow the traditional X options.
201 */
202 mask = 0;
203 x = 0;
204 y = 0;
205 if(winsize && winsize[0]){
206 if(parsewinsize(winsize, &r, &havemin) < 0)
207 panic("bad window size: %r");
208 }else{
209 /*
210 * Parse the various X resources. Thanks to Peter Canning.
211 */
212 char *screen_resources, *display_resources, *geom,
213 *geomrestype, *home, *file;
214 XrmDatabase database;
215 XrmValue geomres;
216
217 database = XrmGetDatabase(_x.display);
218 screen_resources = XScreenResourceString(xscreen);
219 if(screen_resources != nil){
220 XrmCombineDatabase(XrmGetStringDatabase(screen_resources), &database, False);
221 XFree(screen_resources);
222 }
223
224 display_resources = XResourceManagerString(_x.display);
225 if(display_resources == nil){
226 home = getenv("HOME");
227 if(home!=nil && (file=smprint("%s/.Xdefaults", home)) != nil){
228 XrmCombineFileDatabase(file, &database, False);
229 free(file);
230 }
231 }else
232 XrmCombineDatabase(XrmGetStringDatabase(display_resources), &database, False);
233
234 geom = smprint("%s.geometry", label);
235 if(geom && XrmGetResource(database, geom, nil, &geomrestype, &geomres))
236 mask = XParseGeometry(geomres.addr, &x, &y, (uint*)&width, (uint*)&height);
237 free(geom);
238
239 if((mask & WidthValue) && (mask & HeightValue)){
240 r = Rect(0, 0, width, height);
241 }else{
242 r = Rect(0, 0, WidthOfScreen(xscreen)*3/4,
243 HeightOfScreen(xscreen)*3/4);
244 if(Dx(r) > Dy(r)*3/2)
245 r.max.x = r.min.x + Dy(r)*3/2;
246 if(Dy(r) > Dx(r)*3/2)
247 r.max.y = r.min.y + Dx(r)*3/2;
248 }
249 if(mask & XNegative){
250 x += WidthOfScreen(xscreen);
251 }
252 if(mask & YNegative){
253 y += HeightOfScreen(xscreen);
254 }
255 havemin = 0;
256 }
257 screenrect = Rect(0, 0, WidthOfScreen(xscreen), HeightOfScreen(xscreen));
258 mouserect = Rect(0, 0, Dx(r), Dy(r));
259
260 memset(&attr, 0, sizeof attr);
261 attr.colormap = _x.cmap;
262 attr.background_pixel = ~0;
263 attr.border_pixel = 0;
264 _x.drawable = XCreateWindow(
265 _x.display, /* display */
266 xrootwin, /* parent */
267 x, /* x */
268 y, /* y */
269 Dx(r), /* width */
270 Dy(r), /* height */
271 0, /* border width */
272 _x.depth, /* depth */
273 InputOutput, /* class */
274 _x.vis, /* visual */
275 /* valuemask */
276 CWBackPixel|CWBorderPixel|CWColormap,
277 &attr /* attributes (the above aren't?!) */
278 );
279
280 /*
281 * Label and other properties required by ICCCCM.
282 */
283 memset(&name, 0, sizeof name);
284 if(label == nil)
285 label = "pjw-face-here";
286 name.value = (uchar*)label;
287 name.encoding = XA_STRING;
288 name.format = 8;
289 name.nitems = strlen((char*)name.value);
290
291 memset(&normalhint, 0, sizeof normalhint);
292 normalhint.flags = PSize|PMaxSize;
293 if(winsize && winsize[0]){
294 normalhint.flags &= ~PSize;
295 normalhint.flags |= USSize;
296 normalhint.width = Dx(r);
297 normalhint.height = Dy(r);
298 }else{
299 if((mask & WidthValue) && (mask & HeightValue)){
300 normalhint.flags &= ~PSize;
301 normalhint.flags |= USSize;
302 normalhint.width = width;
303 normalhint.height = height;
304 }
305 if((mask & WidthValue) && (mask & HeightValue)){
306 normalhint.flags |= USPosition;
307 normalhint.x = x;
308 normalhint.y = y;
309 }
310 }
311
312 normalhint.max_width = WidthOfScreen(xscreen);
313 normalhint.max_height = HeightOfScreen(xscreen);
314
315 memset(&hint, 0, sizeof hint);
316 hint.flags = InputHint|StateHint;
317 hint.input = 1;
318 hint.initial_state = NormalState;
319
320 memset(&classhint, 0, sizeof classhint);
321 classhint.res_name = label;
322 classhint.res_class = label;
323
324 argv[0] = label;
325 argv[1] = nil;
326
327 XSetWMProperties(
328 _x.display, /* display */
329 _x.drawable, /* window */
330 &name, /* XA_WM_NAME property */
331 &name, /* XA_WM_ICON_NAME property */
332 argv, /* XA_WM_COMMAND */
333 1, /* argc */
334 &normalhint, /* XA_WM_NORMAL_HINTS */
335 &hint, /* XA_WM_HINTS */
336 &classhint /* XA_WM_CLASSHINTS */
337 );
338 XFlush(_x.display);
339
340 if(havemin){
341 XWindowChanges ch;
342
343 memset(&ch, 0, sizeof ch);
344 ch.x = r.min.x;
345 ch.y = r.min.y;
346 XConfigureWindow(_x.display, _x.drawable, CWX|CWY, &ch);
347 /*
348 * Must pretend origin is 0,0 for X.
349 */
350 r = Rect(0,0,Dx(r),Dy(r));
351 }
352
353 _x.kmcon = XOpenDisplay(NULL);
354 if(_x.kmcon == nil)
355 panic("XOpenDisplay kmcon");
356
357 _x.snarfcon = XOpenDisplay(NULL);
358 if(_x.snarfcon == nil)
359 panic("XOpenDisplay snarfcon");
360
361 /*
362 * Look up clipboard atom.
363 */
364 _x.clipboard = XInternAtom(_x.display, "CLIPBOARD", False);
365 _x.utf8string = XInternAtom(_x.display, "UTF8_STRING", False);
366 _x.targets = XInternAtom(_x.display, "TARGETS", False);
367 _x.text = XInternAtom(_x.display, "TEXT", False);
368 _x.compoundtext = XInternAtom(_x.display, "COMPOUND_TEXT", False);
369 _x.takefocus = XInternAtom(_x.display, "WM_TAKE_FOCUS", False);
370 _x.losefocus = XInternAtom(_x.display, "_9WM_LOSE_FOCUS", False);
371 _x.wmprotos = XInternAtom(_x.display, "WM_PROTOCOLS", False);
372 _x.wmstate = XInternAtom(_x.display, "_NET_WM_STATE", False);
373 _x.wmfullscreen = XInternAtom(_x.display, "_NET_WM_STATE_FULLSCREEN", False);
374
375 atoms[0] = _x.takefocus;
376 atoms[1] = _x.losefocus;
377 XChangeProperty(_x.display, _x.drawable, _x.wmprotos, XA_ATOM, 32,
378 PropModeReplace, (uchar*)atoms, 2);
379
380 /*
381 * Put the window on the screen, check to see what size we actually got.
382 */
383 XMapWindow(_x.display, _x.drawable);
384 XSync(_x.display, False);
385
386 if(!XGetWindowAttributes(_x.display, _x.drawable, &wattr))
387 fprint(2, "XGetWindowAttributes failed\n");
388 else if(wattr.width && wattr.height){
389 if(wattr.width != Dx(r) || wattr.height != Dy(r)){
390 r.max.x = r.min.x + wattr.width;
391 r.max.y = r.min.y + wattr.height;
392 }
393 }else
394 fprint(2, "XGetWindowAttributes: bad attrs\n");
395
396 /*
397 * Allocate our local backing store.
398 */
399 _x.screenr = r;
400 _x.screenpm = XCreatePixmap(_x.display, _x.drawable, Dx(r), Dy(r), _x.depth);
401 _x.nextscreenpm = _x.screenpm;
402 _x.screenimage = _xallocmemimage(r, _x.chan, _x.screenpm);
403 if(_x.screenimage == nil)
404 panic("_xallocmemimage failed");
405
406 /*
407 * Figure out physical window location.
408 */
409 int rx, ry;
410 XWindow w;
411 if(XTranslateCoordinates(_x.display, _x.drawable,
412 DefaultRootWindow(_x.display), 0, 0, &rx, &ry, &w))
413 r = Rect(rx, ry, Dx(r), Dy(r));
414 windowrect = r;
415
416 /*
417 * Allocate some useful graphics contexts for the future.
418 */
419 _x.gcfill = xgc(_x.screenpm, FillSolid, -1);
420 _x.gccopy = xgc(_x.screenpm, -1, -1);
421 _x.gcsimplesrc = xgc(_x.screenpm, FillStippled, -1);
422 _x.gczero = xgc(_x.screenpm, -1, -1);
423 _x.gcreplsrc = xgc(_x.screenpm, FillTiled, -1);
424
425 pmid = XCreatePixmap(_x.display, _x.drawable, 1, 1, 1);
426 _x.gcfill0 = xgc(pmid, FillSolid, 0);
427 _x.gccopy0 = xgc(pmid, -1, -1);
428 _x.gcsimplesrc0 = xgc(pmid, FillStippled, -1);
429 _x.gczero0 = xgc(pmid, -1, -1);
430 _x.gcreplsrc0 = xgc(pmid, FillTiled, -1);
431 XFreePixmap(_x.display, pmid);
432
433 termreplacescreenimage(_x.screenimage);
434 return _x.screenimage;
435
436 err0:
437 /*
438 * Should do a better job of cleaning up here.
439 */
440 XCloseDisplay(_x.display);
441 return nil;
442 }
443
444 int
445 _xsetlabel(char *label)
446 {
447 XTextProperty name;
448
449 /*
450 * Label and other properties required by ICCCCM.
451 */
452 memset(&name, 0, sizeof name);
453 if(label == nil)
454 label = "pjw-face-here";
455 name.value = (uchar*)label;
456 name.encoding = XA_STRING;
457 name.format = 8;
458 name.nitems = strlen((char*)name.value);
459
460 XSetWMProperties(
461 _x.display, /* display */
462 _x.drawable, /* window */
463 &name, /* XA_WM_NAME property */
464 &name, /* XA_WM_ICON_NAME property */
465 nil, /* XA_WM_COMMAND */
466 0, /* argc */
467 nil, /* XA_WM_NORMAL_HINTS */
468 nil, /* XA_WM_HINTS */
469 nil /* XA_WM_CLASSHINTS */
470 );
471 XFlush(_x.display);
472 return 0;
473 }
474
475 /*
476 * Create a GC with a particular fill style and XXX.
477 * Disable generation of GraphicsExpose/NoExpose events in the GC.
478 */
479 static XGC
480 xgc(XDrawable d, int fillstyle, int foreground)
481 {
482 XGC gc;
483 XGCValues v;
484
485 memset(&v, 0, sizeof v);
486 v.function = GXcopy;
487 v.graphics_exposures = False;
488 gc = XCreateGC(_x.display, d, GCFunction|GCGraphicsExposures, &v);
489 if(fillstyle != -1)
490 XSetFillStyle(_x.display, gc, fillstyle);
491 if(foreground != -1)
492 XSetForeground(_x.display, gc, 0);
493 return gc;
494 }
495
496 /*
497 * Initialize map with the Plan 9 rgbv color map.
498 */
499 static void
500 plan9cmap(void)
501 {
502 int r, g, b, cr, cg, cb, v, num, den, idx, v7, idx7;
503 static int once;
504
505 if(once)
506 return;
507 once = 1;
508
509 for(r=0; r!=4; r++)
510 for(g = 0; g != 4; g++)
511 for(b = 0; b!=4; b++)
512 for(v = 0; v!=4; v++){
513 den=r;
514 if(g > den)
515 den=g;
516 if(b > den)
517 den=b;
518 /* divide check -- pick grey shades */
519 if(den==0)
520 cr=cg=cb=v*17;
521 else {
522 num=17*(4*den+v);
523 cr=r*num/den;
524 cg=g*num/den;
525 cb=b*num/den;
526 }
527 idx = r*64 + v*16 + ((g*4 + b + v - r) & 15);
528 _x.map[idx].red = cr*0x0101;
529 _x.map[idx].green = cg*0x0101;
530 _x.map[idx].blue = cb*0x0101;
531 _x.map[idx].pixel = idx;
532 _x.map[idx].flags = DoRed|DoGreen|DoBlue;
533
534 v7 = v >> 1;
535 idx7 = r*32 + v7*16 + g*4 + b;
536 if((v & 1) == v7){
537 _x.map7to8[idx7][0] = idx;
538 if(den == 0) { /* divide check -- pick grey shades */
539 cr = ((255.0/7.0)*v7)+0.5;
540 cg = cr;
541 cb = cr;
542 }
543 else {
544 num=17*15*(4*den+v7*2)/14;
545 cr=r*num/den;
546 cg=g*num/den;
547 cb=b*num/den;
548 }
549 _x.map7[idx7].red = cr*0x0101;
550 _x.map7[idx7].green = cg*0x0101;
551 _x.map7[idx7].blue = cb*0x0101;
552 _x.map7[idx7].pixel = idx7;
553 _x.map7[idx7].flags = DoRed|DoGreen|DoBlue;
554 }
555 else
556 _x.map7to8[idx7][1] = idx;
557 }
558 }
559
560 /*
561 * Initialize and install the rgbv color map as a private color map
562 * for this application. It gets the best colors when it has the
563 * cursor focus.
564 *
565 * We always choose the best depth possible, but that might not
566 * be the default depth. On such "suboptimal" systems, we have to allocate an
567 * empty color map anyway, according to Axel Belinfante.
568 */
569 static int
570 setupcmap(XWindow w)
571 {
572 char buf[30];
573 int i;
574 uint32 p, pp;
575 XColor c;
576
577 if(_x.depth <= 1)
578 return 0;
579
580 if(_x.depth >= 24) {
581 if(_x.usetable == 0)
582 _x.cmap = XCreateColormap(_x.display, w, _x.vis, AllocNone);
583
584 /*
585 * The pixel value returned from XGetPixel needs to
586 * be converted to RGB so we can call rgb2cmap()
587 * to translate between 24 bit X and our color. Unfortunately,
588 * the return value appears to be display server endian
589 * dependant. Therefore, we run some heuristics to later
590 * determine how to mask the int value correctly.
591 * Yeah, I know we can look at _x.vis->byte_order but
592 * some displays say MSB even though they run on LSB.
593 * Besides, this is more anal.
594 */
595 c = _x.map[19]; /* known to have different R, G, B values */
596 if(!XAllocColor(_x.display, _x.cmap, &c)){
597 werrstr("XAllocColor: %r");
598 return -1;
599 }
600 p = c.pixel;
601 pp = rgb2cmap((p>>16)&0xff,(p>>8)&0xff,p&0xff);
602 if(pp != _x.map[19].pixel) {
603 /* check if endian is other way */
604 pp = rgb2cmap(p&0xff,(p>>8)&0xff,(p>>16)&0xff);
605 if(pp != _x.map[19].pixel){
606 werrstr("cannot detect X server byte order");
607 return -1;
608 }
609
610 switch(_x.chan){
611 case RGB24:
612 _x.chan = BGR24;
613 break;
614 case XRGB32:
615 _x.chan = XBGR32;
616 break;
617 default:
618 werrstr("cannot byteswap channel %s",
619 chantostr(buf, _x.chan));
620 break;
621 }
622 }
623 }else if(_x.vis->class == TrueColor || _x.vis->class == DirectColor){
624 /*
625 * Do nothing. We have no way to express a
626 * mixed-endian 16-bit screen, so pretend they don't exist.
627 */
628 if(_x.usetable == 0)
629 _x.cmap = XCreateColormap(_x.display, w, _x.vis, AllocNone);
630 }else if(_x.vis->class == PseudoColor){
631 if(_x.usetable == 0){
632 _x.cmap = XCreateColormap(_x.display, w, _x.vis, AllocAll);
633 XStoreColors(_x.display, _x.cmap, _x.map, 256);
634 for(i = 0; i < 256; i++){
635 _x.tox11[i] = i;
636 _x.toplan9[i] = i;
637 }
638 }else{
639 for(i = 0; i < 128; i++){
640 c = _x.map7[i];
641 if(!XAllocColor(_x.display, _x.cmap, &c)){
642 werrstr("can't allocate colors in 7-bit map");
643 return -1;
644 }
645 _x.tox11[_x.map7to8[i][0]] = c.pixel;
646 _x.tox11[_x.map7to8[i][1]] = c.pixel;
647 _x.toplan9[c.pixel] = _x.map7to8[i][0];
648 }
649 }
650 }else{
651 werrstr("unsupported visual class %d", _x.vis->class);
652 return -1;
653 }
654 return 0;
655 }
656
657 void
658 flushmemscreen(Rectangle r)
659 {
660 static Lock flushlock;
661
662 if(up && !up->nlocks.ref && _x.nextscreenpm != _x.screenpm){
663 qlock(&_x.screenlock);
664 XSync(_x.display, False);
665 XFreePixmap(_x.display, _x.screenpm);
666 _x.screenpm = _x.nextscreenpm;
667 qunlock(&_x.screenlock);
668 }
669
670 if(r.min.x >= r.max.x || r.min.y >= r.max.y)
671 return;
672 lock(&flushlock);
673 XCopyArea(_x.display, _x.screenpm, _x.drawable, _x.gccopy, r.min.x, r.min.y,
674 Dx(r), Dy(r), r.min.x, r.min.y);
675 XFlush(_x.display);
676 unlock(&flushlock);
677 }
678
679 void
680 _xexpose(XEvent *e)
681 {
682 XExposeEvent *xe;
683 Rectangle r;
684
685 qlock(&_x.screenlock);
686 if(_x.screenpm != _x.nextscreenpm){
687 qunlock(&_x.screenlock);
688 return;
689 }
690 xe = (XExposeEvent*)e;
691 r.min.x = xe->x;
692 r.min.y = xe->y;
693 r.max.x = xe->x+xe->width;
694 r.max.y = xe->y+xe->height;
695 XCopyArea(_x.display, _x.screenpm, _x.drawable, _x.gccopy, r.min.x, r.min.y,
696 Dx(r), Dy(r), r.min.x, r.min.y);
697 XSync(_x.display, False);
698 qunlock(&_x.screenlock);
699 }
700
701 int
702 _xdestroy(XEvent *e)
703 {
704 XDestroyWindowEvent *xe;
705
706 xe = (XDestroyWindowEvent*)e;
707 if(xe->window == _x.drawable){
708 _x.destroyed = 1;
709 return 1;
710 }
711 return 0;
712 }
713
714 int
715 _xconfigure(XEvent *e)
716 {
717 Rectangle r;
718 XConfigureEvent *xe = (XConfigureEvent*)e;
719
720 if(!fullscreen){
721 int rx, ry;
722 XWindow w;
723 if(XTranslateCoordinates(_x.kmcon, _x.drawable, DefaultRootWindow(_x.display), 0, 0, &rx, &ry, &w))
724 windowrect = Rect(rx, ry, rx+xe->width, ry+xe->height);
725 }
726
727 if(xe->width == Dx(_x.screenr) && xe->height == Dy(_x.screenr))
728 return 0;
729 r = Rect(0, 0, xe->width, xe->height);
730 mouserect = r;
731
732 qlock(&_x.screenlock);
733 if(_x.screenpm != _x.nextscreenpm){
734 XCopyArea(_x.display, _x.screenpm, _x.drawable, _x.gccopy, r.min.x, r.min.y,
735 Dx(r), Dy(r), r.min.x, r.min.y);
736 XSync(_x.display, False);
737 }
738 qunlock(&_x.screenlock);
739 _x.newscreenr = r;
740 return 1;
741 }
742
743 int
744 _xreplacescreenimage(void)
745 {
746 Memimage *m;
747 XDrawable pixmap;
748 Rectangle r;
749
750 r = _x.newscreenr;
751
752 pixmap = XCreatePixmap(_x.display, _x.drawable, Dx(r), Dy(r), _x.depth);
753 m = _xallocmemimage(r, _x.chan, pixmap);
754 if(_x.nextscreenpm != _x.screenpm)
755 XFreePixmap(_x.display, _x.nextscreenpm);
756 _x.nextscreenpm = pixmap;
757 _x.screenr = r;
758 _x.screenimage = m;
759 termreplacescreenimage(m);
760 drawreplacescreenimage(m);
761 _x.screenpm = _x.nextscreenpm;
762 return 1;
763 }
764
765 static int
766 parsewinsize(char *s, Rectangle *r, int *havemin)
767 {
768 char c, *os;
769 int i, j, k, l;
770
771 os = s;
772 *havemin = 0;
773 *r = Rect(0,0,0,0);
774 if(!isdigit((uchar)*s))
775 goto oops;
776 i = strtol(s, &s, 0);
777 if(*s == 'x'){
778 s++;
779 if(!isdigit((uchar)*s))
780 goto oops;
781 j = strtol(s, &s, 0);
782 r->max.x = i;
783 r->max.y = j;
784 if(*s == 0)
785 return 0;
786 if(*s != '@')
787 goto oops;
788
789 s++;
790 if(!isdigit((uchar)*s))
791 goto oops;
792 i = strtol(s, &s, 0);
793 if(*s != ',' && *s != ' ')
794 goto oops;
795 s++;
796 if(!isdigit((uchar)*s))
797 goto oops;
798 j = strtol(s, &s, 0);
799 if(*s != 0)
800 goto oops;
801 *r = rectaddpt(*r, Pt(i,j));
802 *havemin = 1;
803 return 0;
804 }
805
806 c = *s;
807 if(c != ' ' && c != ',')
808 goto oops;
809 s++;
810 if(!isdigit((uchar)*s))
811 goto oops;
812 j = strtol(s, &s, 0);
813 if(*s != c)
814 goto oops;
815 s++;
816 if(!isdigit((uchar)*s))
817 goto oops;
818 k = strtol(s, &s, 0);
819 if(*s != c)
820 goto oops;
821 s++;
822 if(!isdigit((uchar)*s))
823 goto oops;
824 l = strtol(s, &s, 0);
825 if(*s != 0)
826 goto oops;
827 *r = Rect(i,j,k,l);
828 *havemin = 1;
829 return 0;
830
831 oops:
832 werrstr("bad syntax in window size '%s'", os);
833 return -1;
834 }