summaryrefslogtreecommitdiff
path: root/mi/miwindow.c
blob: dc5d21a5f2905e3c4297cafd4fad43d36d281962 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
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
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
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
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
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
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824

/***********************************************************

Copyright 1987, 1998  The Open Group

Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation.

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Except as contained in this notice, the name of The Open Group shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from The Open Group.


Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.

                        All Rights Reserved

Permission to use, copy, modify, and distribute this software and its 
documentation for any purpose and without fee is hereby granted, 
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in 
supporting documentation, and that the name of Digital not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.  

DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.

******************************************************************/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif

#include <X11/X.h>
#include <X11/extensions/shapeconst.h>
#include "regionstr.h"
#include "region.h"
#include "mi.h"
#include "windowstr.h"
#include "scrnintstr.h"
#include "pixmapstr.h"
#include "mivalidate.h"

void
miClearToBackground(WindowPtr pWin,
                    int x, int y, int w, int h,
                    Bool generateExposures)
{
    BoxRec box;
    RegionRec	reg;
    BoxPtr  extents;
    int	    x1, y1, x2, y2;

    /* compute everything using ints to avoid overflow */

    x1 = pWin->drawable.x + x;
    y1 = pWin->drawable.y + y;
    if (w)
        x2 = x1 + (int) w;
    else
        x2 = x1 + (int) pWin->drawable.width - (int) x;
    if (h)
        y2 = y1 + h;	
    else
        y2 = y1 + (int) pWin->drawable.height - (int) y;

    extents = &pWin->clipList.extents;
    
    /* clip the resulting rectangle to the window clipList extents.  This
     * makes sure that the result will fit in a box, given that the
     * screen is < 32768 on a side.
     */

    if (x1 < extents->x1)
	x1 = extents->x1;
    if (x2 > extents->x2)
	x2 = extents->x2;
    if (y1 < extents->y1)
	y1 = extents->y1;
    if (y2 > extents->y2)
	y2 = extents->y2;

    if (x2 <= x1 || y2 <= y1)
    {
	x2 = x1 = 0;
	y2 = y1 = 0;
    }

    box.x1 = x1;
    box.x2 = x2;
    box.y1 = y1;
    box.y2 = y2;

    RegionInit(&reg, &box, 1);

    RegionIntersect(&reg, &reg, &pWin->clipList);
    if (generateExposures)
	(*pWin->drawable.pScreen->WindowExposures)(pWin, &reg, NULL);
    else if (pWin->backgroundState != None)
	miPaintWindow(pWin, &reg, PW_BACKGROUND);
    RegionUninit(&reg);
}

void
miMarkWindow(WindowPtr pWin)
{
    ValidatePtr val;

    if (pWin->valdata)
	return;
    val = (ValidatePtr)xnfalloc(sizeof(ValidateRec));
    val->before.oldAbsCorner.x = pWin->drawable.x;
    val->before.oldAbsCorner.y = pWin->drawable.y;
    val->before.borderVisible = NullRegion;
    val->before.resized = FALSE;
    pWin->valdata = val;
}

Bool
miMarkOverlappedWindows(WindowPtr pWin, WindowPtr pFirst, WindowPtr *ppLayerWin)
{
    BoxPtr box;
    WindowPtr pChild, pLast;
    Bool anyMarked = FALSE;
    MarkWindowProcPtr MarkWindow = pWin->drawable.pScreen->MarkWindow;

    /* single layered systems are easy */
    if (ppLayerWin) *ppLayerWin = pWin;

    if (pWin == pFirst)
    {
	/* Blindly mark pWin and all of its inferiors.	 This is a slight
	 * overkill if there are mapped windows that outside pWin's border,
	 * but it's better than wasting time on RectIn checks.
	 */
	pChild = pWin;
	while (1)
	{
	    if (pChild->viewable)
	    {
		if (RegionBroken(&pChild->winSize))
		    SetWinSize (pChild);
		if (RegionBroken(&pChild->borderSize))
		    SetBorderSize (pChild);
		(* MarkWindow)(pChild);
		if (pChild->firstChild)
		{
		    pChild = pChild->firstChild;
		    continue;
		}
	    }
	    while (!pChild->nextSib && (pChild != pWin))
		pChild = pChild->parent;
	    if (pChild == pWin)
		break;
	    pChild = pChild->nextSib;
	}
	anyMarked = TRUE;
	pFirst = pFirst->nextSib;
    }
    if ( (pChild = pFirst) )
    {
	box = RegionExtents(&pWin->borderSize);
	pLast = pChild->parent->lastChild;
	while (1)
	{
	    if (pChild->viewable)
	    {
		if (RegionBroken(&pChild->winSize))
		    SetWinSize (pChild);
		if (RegionBroken(&pChild->borderSize))
		    SetBorderSize (pChild);
		if (RegionContainsRect(&pChild->borderSize, box))
		{
		    (* MarkWindow)(pChild);
		    anyMarked = TRUE;
		    if (pChild->firstChild)
		    {
			pChild = pChild->firstChild;
			continue;
		    }
		}
	    }
	    while (!pChild->nextSib && (pChild != pLast))
		pChild = pChild->parent;
	    if (pChild == pLast)
		break;
	    pChild = pChild->nextSib;
	}
    }
    if (anyMarked)
	(* MarkWindow)(pWin->parent);
    return anyMarked;
}

/*****
 *  miHandleValidateExposures(pWin)
 *    starting at pWin, draw background in any windows that have exposure
 *    regions, translate the regions, restore any backing store,
 *    and then send any regions still exposed to the client
 *****/
void
miHandleValidateExposures(WindowPtr pWin)
{
    WindowPtr pChild;
    ValidatePtr val;
    WindowExposuresProcPtr WindowExposures;

    pChild = pWin;
    WindowExposures = pChild->drawable.pScreen->WindowExposures;
    while (1)
    {
	if ( (val = pChild->valdata) )
	{
	    if (RegionNotEmpty(&val->after.borderExposed))
		miPaintWindow(pChild, &val->after.borderExposed, PW_BORDER);
	    RegionUninit(&val->after.borderExposed);
	    (*WindowExposures)(pChild, &val->after.exposed, NullRegion);
	    RegionUninit(&val->after.exposed);
	    free(val);
	    pChild->valdata = NULL;
	    if (pChild->firstChild)
	    {
		pChild = pChild->firstChild;
		continue;
	    }
	}
	while (!pChild->nextSib && (pChild != pWin))
	    pChild = pChild->parent;
	if (pChild == pWin)
	    break;
	pChild = pChild->nextSib;
    }
}

void
miMoveWindow(WindowPtr pWin, int x, int y, WindowPtr pNextSib, VTKind kind)
{
    WindowPtr pParent;
    Bool WasViewable = (Bool)(pWin->viewable);
    short bw;
    RegionPtr oldRegion = NULL;
    DDXPointRec oldpt;
    Bool anyMarked = FALSE;
    ScreenPtr pScreen;
    WindowPtr windowToValidate;
    WindowPtr pLayerWin;

    /* if this is a root window, can't be moved */
    if (!(pParent = pWin->parent))
       return ;
    pScreen = pWin->drawable.pScreen;
    bw = wBorderWidth (pWin);

    oldpt.x = pWin->drawable.x;
    oldpt.y = pWin->drawable.y;
    if (WasViewable)
    {
	oldRegion = RegionCreate(NullBox, 1);
	RegionCopy(oldRegion, &pWin->borderClip);
	anyMarked = (*pScreen->MarkOverlappedWindows)(pWin, pWin, &pLayerWin);
    }
    pWin->origin.x = x + (int)bw;
    pWin->origin.y = y + (int)bw;
    x = pWin->drawable.x = pParent->drawable.x + x + (int)bw;
    y = pWin->drawable.y = pParent->drawable.y + y + (int)bw;

    SetWinSize (pWin);
    SetBorderSize (pWin);

    (*pScreen->PositionWindow)(pWin, x, y);

    windowToValidate = MoveWindowInStack(pWin, pNextSib);

    ResizeChildrenWinSize(pWin, x - oldpt.x, y - oldpt.y, 0, 0);

    if (WasViewable)
    {
	if (pLayerWin == pWin)
	    anyMarked |= (*pScreen->MarkOverlappedWindows)
				(pWin, windowToValidate, NULL);
	else
	    anyMarked |= (*pScreen->MarkOverlappedWindows)
				(pWin, pLayerWin, NULL);


	if (anyMarked)
	{
	    (*pScreen->ValidateTree)(pLayerWin->parent, NullWindow, kind);
	    (* pWin->drawable.pScreen->CopyWindow)(pWin, oldpt, oldRegion);
	    RegionDestroy(oldRegion);
	    /* XXX need to retile border if ParentRelative origin */
	    (*pScreen->HandleExposures)(pLayerWin->parent);
	}
	if (anyMarked && pScreen->PostValidateTree)
	    (*pScreen->PostValidateTree)(pLayerWin->parent, NullWindow, kind);
    }
    if (pWin->realized)
	WindowsRestructured ();
}


/*
 * pValid is a region of the screen which has been
 * successfully copied -- recomputed exposed regions for affected windows
 */

static int
miRecomputeExposures (
    WindowPtr	pWin,
    pointer		value) /* must conform to VisitWindowProcPtr */
{
    RegionPtr	pValid = (RegionPtr)value;

    if (pWin->valdata)
    {
#ifdef COMPOSITE
	/*
	 * Redirected windows are not affected by parent window
	 * gravity manipulations, so don't recompute their
	 * exposed areas here.
	 */
	if (pWin->redirectDraw != RedirectDrawNone)
	    return WT_DONTWALKCHILDREN;
#endif
	/*
	 * compute exposed regions of this window
	 */
	RegionSubtract(&pWin->valdata->after.exposed,
			&pWin->clipList, pValid);
	/*
	 * compute exposed regions of the border
	 */
	RegionSubtract(&pWin->valdata->after.borderExposed,
			     &pWin->borderClip, &pWin->winSize);
	RegionSubtract(&pWin->valdata->after.borderExposed,
			     &pWin->valdata->after.borderExposed, pValid);
	return WT_WALKCHILDREN;
    }
    return WT_NOMATCH;
}

void
miSlideAndSizeWindow(WindowPtr pWin,
                     int x, int y,
                     unsigned int w, unsigned int h,
                     WindowPtr pSib)
{
    WindowPtr pParent;
    Bool WasViewable = (Bool)(pWin->viewable);
    unsigned short width = pWin->drawable.width,
		   height = pWin->drawable.height;
    short oldx = pWin->drawable.x,
	  oldy = pWin->drawable.y;
    int bw = wBorderWidth (pWin);
    short dw, dh;
    DDXPointRec oldpt;
    RegionPtr oldRegion = NULL;
    Bool anyMarked = FALSE;
    ScreenPtr pScreen;
    WindowPtr pFirstChange;
    WindowPtr pChild;
    RegionPtr	gravitate[StaticGravity + 1];
    unsigned g;
    int		nx, ny;		/* destination x,y */
    int		newx, newy;	/* new inner window position */
    RegionPtr	pRegion = NULL;
    RegionPtr	destClip;	/* portions of destination already written */
    RegionPtr	oldWinClip = NULL;	/* old clip list for window */
    RegionPtr	borderVisible = NullRegion; /* visible area of the border */
    Bool	shrunk = FALSE; /* shrunk in an inner dimension */
    Bool	moved = FALSE;	/* window position changed */
    WindowPtr  pLayerWin;

    /* if this is a root window, can't be resized */
    if (!(pParent = pWin->parent))
	return ;

    pScreen = pWin->drawable.pScreen;
    newx = pParent->drawable.x + x + bw;
    newy = pParent->drawable.y + y + bw;
    if (WasViewable)
    {
	anyMarked = FALSE;
	/*
	 * save the visible region of the window
	 */
	oldRegion = RegionCreate(NullBox, 1);
	RegionCopy(oldRegion, &pWin->winSize);

	/*
	 * categorize child windows into regions to be moved
	 */
	for (g = 0; g <= StaticGravity; g++)
	    gravitate[g] = (RegionPtr) NULL;
	for (pChild = pWin->firstChild; pChild; pChild = pChild->nextSib)
	{
	    g = pChild->winGravity;
	    if (g != UnmapGravity)
	    {
		if (!gravitate[g])
		    gravitate[g] = RegionCreate(NullBox, 1);
		RegionUnion(gravitate[g],
				   gravitate[g], &pChild->borderClip);
	    }
	    else
	    {
		UnmapWindow(pChild, TRUE);
		anyMarked = TRUE;
	    }
	}
	anyMarked |= (*pScreen->MarkOverlappedWindows)(pWin, pWin, 
						       &pLayerWin);

	oldWinClip = NULL;
	if (pWin->bitGravity != ForgetGravity)
	{
	    oldWinClip = RegionCreate(NullBox, 1);
	    RegionCopy(oldWinClip, &pWin->clipList);
	}
	/*
	 * if the window is changing size, borderExposed
	 * can't be computed correctly without some help.
	 */
	if (pWin->drawable.height > h || pWin->drawable.width > w)
	    shrunk = TRUE;

	if (newx != oldx || newy != oldy)
	    moved = TRUE;

	if ((pWin->drawable.height != h || pWin->drawable.width != w) &&
	    HasBorder (pWin))
	{
	    borderVisible = RegionCreate(NullBox, 1);
	    /* for tiled borders, we punt and draw the whole thing */
	    if (pWin->borderIsPixel || !moved)
	    {
		if (shrunk || moved)
		    RegionSubtract(borderVisible,
					  &pWin->borderClip,
					  &pWin->winSize);
		else
		    RegionCopy(borderVisible,
					    &pWin->borderClip);
	    }
	}
    }
    pWin->origin.x = x + bw;
    pWin->origin.y = y + bw;
    pWin->drawable.height = h;
    pWin->drawable.width = w;

    x = pWin->drawable.x = newx;
    y = pWin->drawable.y = newy;

    SetWinSize (pWin);
    SetBorderSize (pWin);

    dw = (int)w - (int)width;
    dh = (int)h - (int)height;
    ResizeChildrenWinSize(pWin, x - oldx, y - oldy, dw, dh);

    /* let the hardware adjust background and border pixmaps, if any */
    (*pScreen->PositionWindow)(pWin, x, y);

    pFirstChange = MoveWindowInStack(pWin, pSib);

    if (WasViewable)
    {
	pRegion = RegionCreate(NullBox, 1);

	if (pLayerWin == pWin)
	    anyMarked |= (*pScreen->MarkOverlappedWindows)(pWin, pFirstChange,
						NULL);
	else
	    anyMarked |= (*pScreen->MarkOverlappedWindows)(pWin, pLayerWin,
						NULL);

	if (pWin->valdata)
	{
	    pWin->valdata->before.resized = TRUE;
	    pWin->valdata->before.borderVisible = borderVisible;
	}


	if (anyMarked)
	    (*pScreen->ValidateTree)(pLayerWin->parent, pFirstChange, VTOther);
	/*
	 * the entire window is trashed unless bitGravity
	 * recovers portions of it
	 */
	RegionCopy(&pWin->valdata->after.exposed, &pWin->clipList);
    }

    GravityTranslate (x, y, oldx, oldy, dw, dh, pWin->bitGravity, &nx, &ny);

    if (WasViewable)
    {
	/* avoid the border */
	if (HasBorder (pWin))
	{
	    int	offx, offy, dx, dy;

	    /* kruft to avoid double translates for each gravity */
	    offx = 0;
	    offy = 0;
	    for (g = 0; g <= StaticGravity; g++)
	    {
		if (!gravitate[g])
		    continue;

		/* align winSize to gravitate[g].
		 * winSize is in new coordinates,
		 * gravitate[g] is still in old coordinates */
		GravityTranslate (x, y, oldx, oldy, dw, dh, g, &nx, &ny);
		
		dx = (oldx - nx) - offx;
		dy = (oldy - ny) - offy;
		if (dx || dy)
		{
		    RegionTranslate(&pWin->winSize, dx, dy);
		    offx += dx;
		    offy += dy;
		}
		RegionIntersect(gravitate[g], gravitate[g],
				 &pWin->winSize);
	    }
	    /* get winSize back where it belongs */
	    if (offx || offy)
		RegionTranslate(&pWin->winSize, -offx, -offy);
	}
	/*
	 * add screen bits to the appropriate bucket
	 */

	if (oldWinClip)
	{
	    /*
	     * clip to new clipList
	     */
	    RegionCopy(pRegion, oldWinClip);
	    RegionTranslate(pRegion, nx - oldx, ny - oldy);
	    RegionIntersect(oldWinClip, pRegion, &pWin->clipList);
	    /*
	     * don't step on any gravity bits which will be copied after this
	     * region.	Note -- this assumes that the regions will be copied
	     * in gravity order.
	     */
	    for (g = pWin->bitGravity + 1; g <= StaticGravity; g++)
	    {
		if (gravitate[g])
		    RegionSubtract(oldWinClip, oldWinClip,
					gravitate[g]);
	    }
	    RegionTranslate(oldWinClip, oldx - nx, oldy - ny);
	    g = pWin->bitGravity;
	    if (!gravitate[g])
		gravitate[g] = oldWinClip;
	    else
	    {
		RegionUnion(gravitate[g], gravitate[g], oldWinClip);
		RegionDestroy(oldWinClip);
	    }
	}

	/*
	 * move the bits on the screen
	 */

	destClip = NULL;

	for (g = 0; g <= StaticGravity; g++)
	{
	    if (!gravitate[g])
		continue;

	    GravityTranslate (x, y, oldx, oldy, dw, dh, g, &nx, &ny);

	    oldpt.x = oldx + (x - nx);
	    oldpt.y = oldy + (y - ny);

	    /* Note that gravitate[g] is *translated* by CopyWindow */

	    /* only copy the remaining useful bits */

	    RegionIntersect(gravitate[g], gravitate[g], oldRegion);

	    /* clip to not overwrite already copied areas */

	    if (destClip) {
		RegionTranslate(destClip, oldpt.x - x, oldpt.y - y);
		RegionSubtract(gravitate[g], gravitate[g], destClip);
		RegionTranslate(destClip, x - oldpt.x, y - oldpt.y);
	    }

	    /* and move those bits */

	    if (oldpt.x != x || oldpt.y != y
#ifdef COMPOSITE
		|| pWin->redirectDraw
#endif
		)
	    {
		(*pWin->drawable.pScreen->CopyWindow)(pWin, oldpt, gravitate[g]);
	    }

	    /* remove any overwritten bits from the remaining useful bits */

	    RegionSubtract(oldRegion, oldRegion, gravitate[g]);

	    /*
	     * recompute exposed regions of child windows
	     */
	
	    for (pChild = pWin->firstChild; pChild; pChild = pChild->nextSib)
	    {
		if (pChild->winGravity != g)
		    continue;
		RegionIntersect(pRegion,
				       &pChild->borderClip, gravitate[g]);
		TraverseTree (pChild, miRecomputeExposures, (pointer)pRegion);
	    }

	    /*
	     * remove the successfully copied regions of the
	     * window from its exposed region
	     */

	    if (g == pWin->bitGravity)
		RegionSubtract(&pWin->valdata->after.exposed,
				     &pWin->valdata->after.exposed, gravitate[g]);
	    if (!destClip)
		destClip = gravitate[g];
	    else
	    {
		RegionUnion(destClip, destClip, gravitate[g]);
		RegionDestroy(gravitate[g]);
	    }
	}

	RegionDestroy(oldRegion);
	RegionDestroy(pRegion);
	if (destClip)
	    RegionDestroy(destClip);
	if (anyMarked)
	    (*pScreen->HandleExposures)(pLayerWin->parent);
	if (anyMarked && pScreen->PostValidateTree)
	    (*pScreen->PostValidateTree)(pLayerWin->parent, pFirstChange,
					  VTOther);
    }
    if (pWin->realized)
	WindowsRestructured ();
}

WindowPtr
miGetLayerWindow(WindowPtr pWin)
{
    return pWin->firstChild;
}

/******
 *
 * miSetShape
 *    The border/window shape has changed.  Recompute winSize/borderSize
 *    and send appropriate exposure events
 */

void
miSetShape(WindowPtr pWin, int kind)
{
    Bool        WasViewable = (Bool)(pWin->viewable);
    ScreenPtr   pScreen = pWin->drawable.pScreen;
    Bool        anyMarked = FALSE;
    WindowPtr   pLayerWin;

    if (kind != ShapeInput) {
        if (WasViewable)
        {
            anyMarked = (*pScreen->MarkOverlappedWindows)(pWin, pWin,
                                                          &pLayerWin);
            if (pWin->valdata)
            {
                if (HasBorder (pWin))
                {
                    RegionPtr borderVisible;

                    borderVisible = RegionCreate(NullBox, 1);
                    RegionSubtract(borderVisible,
                                    &pWin->borderClip, &pWin->winSize);
                    pWin->valdata->before.borderVisible = borderVisible;
                }
                pWin->valdata->before.resized = TRUE;
            }
        }

        SetWinSize (pWin);
        SetBorderSize (pWin);

        ResizeChildrenWinSize(pWin, 0, 0, 0, 0);

        if (WasViewable)
        {
            anyMarked |= (*pScreen->MarkOverlappedWindows)(pWin, pWin,
                                                           NULL);

            if (anyMarked)
                (*pScreen->ValidateTree)(pLayerWin->parent, NullWindow,
                                         VTOther);
        }

        if (WasViewable)
        {
            if (anyMarked)
                (*pScreen->HandleExposures)(pLayerWin->parent);
            if (anyMarked && pScreen->PostValidateTree)
                (*pScreen->PostValidateTree)(pLayerWin->parent, NullWindow,
                                             VTOther);
        }
    }
    if (pWin->realized)
        WindowsRestructured ();
    CheckCursorConfinement(pWin);
}

/* Keeps the same inside(!) origin */

void
miChangeBorderWidth(WindowPtr pWin, unsigned int width)
{
    int oldwidth;
    Bool anyMarked = FALSE;
    ScreenPtr pScreen;
    Bool WasViewable = (Bool)(pWin->viewable);
    Bool HadBorder;
    WindowPtr  pLayerWin;

    oldwidth = wBorderWidth (pWin);
    if (oldwidth == width)
	return;
    HadBorder = HasBorder(pWin);
    pScreen = pWin->drawable.pScreen;
    if (WasViewable && width < oldwidth)
	anyMarked = (*pScreen->MarkOverlappedWindows)(pWin, pWin, &pLayerWin);

    pWin->borderWidth = width;
    SetBorderSize (pWin);

    if (WasViewable)
    {
	if (width > oldwidth)
	{
	    anyMarked = (*pScreen->MarkOverlappedWindows)(pWin, pWin,
							  &pLayerWin);
	    /*
	     * save the old border visible region to correctly compute
	     * borderExposed.
	     */
	    if (pWin->valdata && HadBorder)
	    {
		RegionPtr   borderVisible;
		borderVisible = RegionCreate(NULL, 1);
		RegionSubtract(borderVisible,
				      &pWin->borderClip, &pWin->winSize);
		pWin->valdata->before.borderVisible = borderVisible;
	    }
	}

	if (anyMarked)
	{
	    (*pScreen->ValidateTree)(pLayerWin->parent, pLayerWin, VTOther);
	    (*pScreen->HandleExposures)(pLayerWin->parent);
	}
	if (anyMarked && pScreen->PostValidateTree)
	    (*pScreen->PostValidateTree)(pLayerWin->parent, pLayerWin,
					  VTOther);
    }
    if (pWin->realized)
	WindowsRestructured ();
}

void
miMarkUnrealizedWindow(WindowPtr pChild, WindowPtr pWin, Bool fromConfigure)
{
    if ((pChild != pWin) || fromConfigure)
    {
	RegionEmpty(&pChild->clipList);
	if (pChild->drawable.pScreen->ClipNotify)
	    (* pChild->drawable.pScreen->ClipNotify)(pChild, 0, 0);
	RegionEmpty(&pChild->borderClip);
    }
}

void
miSegregateChildren(WindowPtr pWin, RegionPtr pReg, int depth)
{
    WindowPtr pChild;

    for (pChild = pWin->firstChild; pChild; pChild = pChild->nextSib)
    {
	if (pChild->drawable.depth == depth)
	    RegionUnion(pReg, pReg, &pChild->borderClip);

	if (pChild->firstChild)
	    miSegregateChildren(pChild, pReg, depth);
    }
}