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source: trunk/src/gdi32/dibsect.cpp@ 10373

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Last change on this file since 10373 was 10373, checked in by sandervl, 22 years ago
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1	/* $Id: dibsect.cpp,v 1.68 2004-01-11 11:42:10 sandervl Exp $ */
2
3	/*
4	* GDI32 DIB sections
5	*
6	* Copyright 1998-2000 Sander van Leeuwen (sandervl@xs4all.nl)
7	* Copyright 1998 Patrick Haller
8	* Copyright 2002-2003 Innotek Systemberatung GmbH (sandervl@innotek.de)
9	*
10	* Project Odin Software License can be found in LICENSE.TXT
11	*
12	* Basic GPI object and bitmap data synchronization:
13	*
14	* - CreateDIBSection:
15	* register a memory range for exception notification
16	* set to read/commit during creation
17	*
18	* - if(exception)
19	* if(invalid)
20	* sync and set to commit/read, clear invalid flag
21	* if(write violation)
22	* make as dirty and set range to read/write
23	*
24	* - before GDI operation
25	* if(dirty)
26	* flush (set bitmap bits), clear dirty flag, set range to readonly
27	*
28	* - after GDI operation
29	* set invalid flag, set range to invalid
30	*
31	* - GdiFlush:
32	* NOP
33	*
34	* Should probably detect partial changes to avoid having to sync the entire
35	* DIB section each time something minor changes.
36	*
37	* Might get a little bit more complicated when the application gives us a memory
38	* mapped file handle. (although we can change the protection flags of aliased pages)
39	*
40	*/
41	#define INCL_GPI
42	#define INCL_WIN
43	#include <os2wrap.h> //Odin32 OS/2 api wrappers
44	#include <stdlib.h>
45	#include <string.h>
46	#include <win32type.h>
47	#include <misc.h>
48	#include <win32api.h>
49	#include <winconst.h>
50	#include <winuser32.h>
51	#include <dcdata.h>
52	#include "dibsect.h"
53	#include "oslibgpi.h"
54	#include "rgbcvt.h"
55	#include <memmap.h>
56
57	#define DBG_LOCALLOG DBG_dibsect
58	#include "dbglocal.h"
59
60	static BOOL WIN32API DIBExceptionNotify(LPVOID lpBase, ULONG offset, BOOL fWriteAccess,
61	DWORD dwSize, DWORD dwUserData);
62
63
64	//******************************************************************************
65	//******************************************************************************
66	DIBSection::DIBSection(BITMAPINFOHEADER_W pbmi, char pColors, DWORD iUsage, DWORD hSection, DWORD dwOffset, HBITMAP hBitmap, int fFlip)
67	: bmpBits(NULL), pOS2bmp(NULL), next(NULL), bmpBitsDblBuffer(NULL),
68	hdc(0), hwndParent(0), fDirty(FALSE), fInvalid(FALSE), dwSize(0)
69	{
70	int palsize=0;
71
72	bmpsize = pbmi->biWidth;
73	/* @@@PH 98/06/07 -- high-color bitmaps don't have palette */
74
75	this->fFlip = fFlip;
76	os2bmphdrsize = sizeof(BITMAPINFO2);
77
78	switch(pbmi->biBitCount)
79	{
80	case 1:
81	bmpsize = ((bmpsize + 31) & ~31) / 8;
82	palsize = ((1 << pbmi->biBitCount))*sizeof(RGB2);
83	os2bmphdrsize += palsize;
84	break;
85	case 4:
86	bmpsize = ((bmpsize + 7) & ~7) / 2;
87	palsize = ((1 << pbmi->biBitCount))*sizeof(RGB2);
88	os2bmphdrsize += palsize;
89	break;
90	case 8:
91	palsize = ((1 << pbmi->biBitCount))*sizeof(RGB2);
92	os2bmphdrsize += palsize;
93	bmpsize = (bmpsize + 3) & ~3;
94	break;
95	case 16:
96	bmpsize *= 2;
97	bmpsize = (bmpsize + 3) & ~3;
98	break;
99	case 24:
100	bmpsize *= 3;
101	bmpsize = (bmpsize + 3) & ~3;
102	break;
103	case 32:
104	bmpsize *= 4;
105	break;
106	default:
107	dprintf(("Unsupported nr of bits %d", pbmi->biBitCount));
108	DebugInt3();
109	break;
110	}
111
112	this->hSection = hSection;
113	this->dwOffset = dwOffset;
114	if(hSection) {
115	bmpBits = (char )MapViewOfFile(hSection, FILE_MAP_ALL_ACCESS_W, 0, dwOffset, bmpsizepbmi->biHeight - dwOffset);
116	if(!bmpBits) {
117	dprintf(("Dibsection: mapViewOfFile %x failed!", hSection));
118	DebugInt3();
119	}
120	}
121	if(!bmpBits) {
122	APIRET rc = DosAllocMem((PPVOID)&bmpBits, bmpsize*pbmi->biHeight, PAG_READ\|PAG_COMMIT);
123	if(rc) {
124	dprintf(("DosAllocMem failed with %d", rc));
125	DebugInt3();
126	}
127	if(MMAP_RegisterMemoryRange(DIBExceptionNotify, bmpBits, bmpsize*pbmi->biHeight, hBitmap) == FALSE)
128	{
129	dprintf(("MMAP_RegisterMemoryRange failed!!"));
130	DebugInt3();
131	}
132	dwSize = bmpsize*pbmi->biHeight;
133	}
134	else memset(bmpBits, 0, bmpsize*pbmi->biHeight);
135
136	pOS2bmp = (BITMAPINFO2 *)malloc(os2bmphdrsize);
137
138	memset(pOS2bmp, /* set header + palette entries to zero */
139	0,
140	os2bmphdrsize);
141
142	pOS2bmp->cbFix = sizeof(BITMAPINFO2) - sizeof(RGB2);
143	pOS2bmp->cx = pbmi->biWidth;
144	pOS2bmp->cy = pbmi->biHeight;
145	pOS2bmp->cPlanes = pbmi->biPlanes;
146	pOS2bmp->cBitCount = pbmi->biBitCount;
147	pOS2bmp->ulCompression = pbmi->biCompression; //same as OS/2 (uncompressed, rle8, rle4)
148	//SvL: Ignore BI_BITFIELDS_W type (GpiDrawBits fails otherwise)
149	if(pOS2bmp->ulCompression == BI_BITFIELDS_W) {
150	pOS2bmp->ulCompression = 0;
151	}
152	pOS2bmp->cbImage = pbmi->biSizeImage;
153	dprintf(("hBitmap %x", hBitmap));
154	dprintf(("pOS2bmp->cx %d\n", pOS2bmp->cx));
155	dprintf(("pOS2bmp->cy %d\n", pOS2bmp->cy));
156	dprintf(("pOS2bmp->cPlanes %d\n", pOS2bmp->cPlanes));
157	dprintf(("pOS2bmp->cBitCount %d\n", pOS2bmp->cBitCount));
158	dprintf(("pOS2bmp->ulCompression %d\n", pOS2bmp->ulCompression));
159	dprintf(("pOS2bmp->cbImage %d\n", pOS2bmp->cbImage));
160	dprintf(("Bits at %x, size %d",bmpBits, bmpsize*pbmi->biHeight));
161
162	// clear DIBSECTION structure
163	memset(&dibinfo, 0, sizeof(dibinfo));
164
165	// copy BITMAPINFOHEADER data into DIBSECTION structure
166	memcpy(&dibinfo.dsBmih, pbmi, sizeof(*pbmi));
167	dibinfo.dsBm.bmType = 0;
168	dibinfo.dsBm.bmWidth = pbmi->biWidth;
169	dibinfo.dsBm.bmHeight = pbmi->biHeight;
170	dibinfo.dsBm.bmWidthBytes= bmpsize;
171	dibinfo.dsBm.bmPlanes = pbmi->biPlanes;
172	dibinfo.dsBm.bmBitsPixel = pbmi->biBitCount;
173	dibinfo.dsBm.bmBits = bmpBits;
174
175	dibinfo.dshSection = hSection;
176	dibinfo.dsOffset = dwOffset;
177
178	if(iUsage == DIB_PAL_COLORS \|\| pbmi->biBitCount <= 8)
179	{
180	dibinfo.dsBitfields[0] = dibinfo.dsBitfields[1] = dibinfo.dsBitfields[2] = 0;
181	if(palsize) {
182	SetDIBColorTable(0, (pbmi->biClrUsed) ? pbmi->biClrUsed : (1 << pbmi->biBitCount), (RGBQUAD *)(pbmi+1));
183	}
184	}
185	else {
186	switch(pbmi->biBitCount)
187	{
188	case 16:
189	dibinfo.dsBitfields[0] = (pbmi->biCompression == BI_BITFIELDS_W) ? (DWORD )pColors : 0x7c00;
190	dibinfo.dsBitfields[1] = (pbmi->biCompression == BI_BITFIELDS_W) ? ((DWORD )pColors + 1) : 0x03e0;
191	dibinfo.dsBitfields[2] = (pbmi->biCompression == BI_BITFIELDS_W) ? ((DWORD )pColors + 2) : 0x001f;
192	break;
193
194	case 24:
195	case 32:
196	dibinfo.dsBitfields[0] = (pbmi->biCompression == BI_BITFIELDS_W) ? (DWORD )pColors : 0xff0000;
197	dibinfo.dsBitfields[1] = (pbmi->biCompression == BI_BITFIELDS_W) ? ((DWORD )pColors + 1) : 0x00ff00;
198	dibinfo.dsBitfields[2] = (pbmi->biCompression == BI_BITFIELDS_W) ? ((DWORD )pColors + 2) : 0x0000ff;
199	if(dibinfo.dsBitfields[0] != 0xff0000 && dibinfo.dsBitfields[1] != 0xff00 && dibinfo.dsBitfields[2] != 0xff) {
200	dprintf(("DIBSection: unsupported bitfields for 32 bits bitmap!!"));
201	}
202	break;
203	}
204	dprintf(("BI_BITFIELDS_W %x %x %x", dibinfo.dsBitfields[0], dibinfo.dsBitfields[1], dibinfo.dsBitfields[2]));
205	}
206	//double buffer for rgb 555 dib sections (for conversion) or flipped sections
207	if(dibinfo.dsBitfields[1] == 0x03e0 \|\| (fFlip & FLIP_VERT)) {
208	DosAllocMem((PPVOID)&bmpBitsDblBuffer, bmpsize*pbmi->biHeight, PAG_READ\|PAG_WRITE\|PAG_COMMIT);
209	}
210
211	this->hBitmap = hBitmap;
212	this->iUsage = iUsage;
213
214	lock();
215	if(section == NULL)
216	{
217	dprintf(("section was NULL\n"));
218	section = this;
219	}
220	else
221	{
222	DIBSection *dsect = section;
223	dprintf2(("Increment section starting at %08X\n",dsect));
224
225	while ( (dsect->next != this) &&
226	(dsect->next != NULL) )
227	{
228	//// dprintf2(("Increment section to %08X\n",dsect->next));
229	dsect = dsect->next;
230	}
231	dsect->next = this;
232	}
233	unlock();
234	}
235	//******************************************************************************
236	//******************************************************************************
237	DIBSection::~DIBSection()
238	{
239	dprintf(("Delete DIBSection %x", hBitmap));
240
241	if(hSection) {
242	UnmapViewOfFile(bmpBits);
243	}
244	else
245	{
246	if(MMAP_UnregisterMemoryRange(bmpBits) == FALSE)
247	{
248	dprintf(("MMAP_UnregisterMemoryRange failed!!"));
249	DebugInt3();
250	}
251	if(bmpBits)
252	DosFreeMem(bmpBits);
253	}
254
255	if(bmpBitsDblBuffer)
256	DosFreeMem(bmpBitsDblBuffer);
257
258	if(pOS2bmp)
259	free(pOS2bmp);
260
261	lock();
262	if(section == this)
263	{
264	section = this->next;
265	}
266	else
267	{
268	DIBSection *dsect = section;
269
270	while(dsect->next != this)
271	{
272	dsect = dsect->next;
273	}
274	dsect->next = this->next;
275	}
276	unlock();
277	}
278	//******************************************************************************
279	//******************************************************************************
280	int DIBSection::SetDIBColorTable(int startIdx, int cEntries, RGBQUAD *rgb)
281	{
282	int i, end;
283
284	dprintf(("SetDIBColorTable %d %d %x", startIdx, cEntries, rgb));
285
286	if(pOS2bmp->cBitCount > 8) {
287	dprintf(("DIBSection::SetDIBColorTable: bpp > 8; ignore"));
288	return 0;
289	}
290
291	end = startIdx + cEntries;
292	if(end > (1 << pOS2bmp->cBitCount)) {
293	end = (1 << pOS2bmp->cBitCount);
294	cEntries = end - startIdx;
295	}
296
297	memcpy(&pOS2bmp->argbColor[startIdx], rgb, cEntries*sizeof(RGB2));
298
299	for(i=startIdx;i<end;i++)
300	{
301	pOS2bmp->argbColor[i].fcOptions = 0;
302	dprintf2(("Index %d : 0x%08X\n",i, ((ULONG)(&pOS2bmp->argbColor[i])) ));
303	}
304	return(cEntries);
305	}
306	//******************************************************************************
307	//******************************************************************************
308	int DIBSection::SetDIBColorTable(int startIdx, int cEntries, PALETTEENTRY *palentry)
309	{
310	int i, end;
311
312	if(pOS2bmp->cBitCount > 8) {
313	dprintf(("DIBSection::SetDIBColorTable: bpp > 8; ignore"));
314	return 0;
315	}
316
317	end = startIdx + cEntries;
318	if(end > (1 << pOS2bmp->cBitCount)) {
319	end = (1 << pOS2bmp->cBitCount);
320	}
321	for(i=startIdx;i<end;i++)
322	{
323	pOS2bmp->argbColor[i].fcOptions = 0;
324	pOS2bmp->argbColor[i].bBlue = palentry[i].peBlue;
325	pOS2bmp->argbColor[i].bGreen = palentry[i].peGreen;
326	pOS2bmp->argbColor[i].bRed = palentry[i].peRed;
327	dprintf2(("Index %d : 0x%08X\n",i, ((ULONG)(&pOS2bmp->argbColor[i])) ));
328	}
329
330	return end - startIdx;
331	}
332	//******************************************************************************
333	//******************************************************************************
334	int DIBSection::GetDIBColorTable(int startIdx, int cEntries, RGBQUAD *rgb)
335	{
336	int i, end = startIdx + cEntries;
337
338	if(pOS2bmp->cBitCount > 8) {
339	dprintf(("DIBSection::GetDIBColorTable: bpp > 8 -> return 0"));
340	return 0;
341	}
342	if(end > (1 << pOS2bmp->cBitCount)) {
343	end = (1 << pOS2bmp->cBitCount);
344	dprintf(("DIBSection::GetDIBColorTable: %d->%d", startIdx, end));
345	}
346	memcpy(rgb, &pOS2bmp->argbColor[startIdx], cEntries*sizeof(RGBQUAD));
347
348	for(i=0;i<cEntries;i++) {
349	rgb[i].rgbReserved = 0;
350	}
351
352	return end - startIdx;
353	}
354	//******************************************************************************
355	//******************************************************************************
356	BOOL DIBSection::BitBlt(HDC hdcDest, int nXdest, int nYdest, int nDestWidth,
357	int nDestHeight, int nXsrc, int nYsrc,
358	int nSrcWidth, int nSrcHeight, DWORD Rop)
359	{
360	HPS hps = (HPS)hdcDest;
361	POINTL point[4];
362	LONG rc, hdcHeight, hdcWidth;
363	PVOID bitmapBits = NULL;
364	int oldyinversion = 0;
365	BOOL fRestoryYInversion = FALSE, fFrameWindowDC = FALSE;
366	HWND hwndDest;
367	pDCData pHps;
368
369	pHps = (pDCData)OSLibGpiQueryDCData((HPS)hdcDest);
370	if(!pHps)
371	{
372	SetLastError(ERROR_INVALID_HANDLE_W);
373	return FALSE;
374	}
375
376	hwndDest = WindowFromDC(hdcDest); //could return desktop window, so check that
377	if(hwndDest && pHps->hwnd && !pHps->isClient) {
378	fFrameWindowDC = TRUE;
379	}
380
381	dprintf(("DIBSection::BitBlt %x %X (hps %x) %x to(%d,%d)(%d,%d) from (%d,%d)(%d,%d) rop %x flip %x",
382	hBitmap, hdcDest, hps, hwndDest, nXdest, nYdest, nDestWidth, nDestHeight,
383	nXsrc, nYsrc, nSrcWidth, nSrcHeight, Rop, fFlip));
384
385	//shortcut; better to sync it here instead of in the exception handler
386	//(pages touched inside PMGPI)
387	if(isInvalid()) {
388	sync();
389	}
390
391	if(hwndDest) {
392	RECT rect;
393
394	if(fFrameWindowDC) {
395	GetWindowRect(hwndDest, &rect);
396	}
397	else GetClientRect(hwndDest, &rect);
398	hdcHeight = rect.bottom - rect.top;
399	hdcWidth = rect.right - rect.left;
400	dprintf(("DIBSection::BitBlt hdc size (%d,%d) (WINDOW)", hdcWidth, hdcHeight));
401	}
402	else {
403	hdcHeight = pHps->bitmapHeight;
404	hdcWidth = pHps->bitmapWidth;
405	dprintf(("DIBSection::BitBlt hdc size (%d,%d) (BMP)", hdcWidth, hdcHeight));
406	}
407
408	//Don't clip destination size to destination DC size
409	//This messes up the two bitmaps in the opening window of Opera 6
410	//(choice between MDI & SDI interface)
411
412	//win32 coordinates are relative to left top, OS/2 expects left bottom
413	//source rectangle is non-inclusive (top, right not included)
414	//destination rectangle is incl.-inclusive (everything included)
415
416	point[0].x = nXdest;
417	point[1].x = nXdest + nDestWidth - 1;
418	#ifdef INVERT
419	point[0].y = hdcHeight - nYdest - nDestHeight;
420	point[1].y = hdcHeight - nYdest - 1;
421	#else
422	point[0].y = nYdest;
423	point[1].y = nYdest + nDestHeight - 1;
424	#endif
425
426	//target rectangle is inclusive-inclusive
427	point[2].x = nXsrc;
428	point[3].x = nXsrc + nSrcWidth;
429	#ifdef INVERT
430	point[2].y = pOS2bmp->cy - nYsrc - nSrcHeight;
431	point[3].y = pOS2bmp->cy - nYsrc;
432	#else
433	point[2].y = nYsrc;
434	point[3].y = nYsrc + nSrcHeight;
435	#endif
436
437	#ifdef INVERT
438	oldyinversion = GpiQueryYInversion(hps);
439	if(oldyinversion != 0) {
440	POINT viewpt, winpt;
441
442	GetViewportOrgEx(hps, &viewpt);
443	GetWindowOrgEx(hps, &winpt);
444
445	dprintf(("Viewport origin (%d,%d)", viewpt.x, viewpt.y));
446	dprintf(("Windows origin (%d,%d)", winpt.x, winpt.y));
447
448	/* By resetting y inversion to 0, we must take the new windows
449	* origin into account. The default matrix set up for the origin
450	* depends on y inversion. Therefor we must add the y origin value,
451	* multiplied by two, to the top & bottom coordinates
452	*/
453	point[0].y -= winpt.y*2;
454	point[1].y -= winpt.y*2;
455
456	/* By resetting y inversion to 0, we must take the new viewport
457	* origin into account. The default matrix set up for the origin
458	* depends on y inversion. Therefor we must subtract the y origin value,
459	* multiplied by two, from the top & bottom coordinates
460	*/
461	point[0].y -= viewpt.y*2;
462	point[1].y -= viewpt.y*2;
463
464	GpiEnableYInversion(hps, 0);
465	fRestoryYInversion = TRUE;
466	}
467	#else
468	dprintf(("Sync destination dibsection: hdc y inversion = %d", GpiQueryYInversion(hdc)));
469	#endif
470
471	dprintf(("DIBSection::BitBlt (%d,%d)(%d,%d) from (%d,%d)(%d,%d) dim (%d,%d)(%d,%d)", point[0].x, point[0].y,
472	point[1].x, point[1].y, point[2].x, point[2].y, point[3].x, point[3].y,
473	nDestWidth, nDestHeight, nSrcWidth, nSrcHeight));
474
475	#ifdef DEBUG
476	RECTL rcltemp;
477	GreGetDCOrigin(hps, (PPOINTL)&rcltemp);
478	dprintf(("origin (%d,%d) yinv %d", rcltemp.xLeft, rcltemp.yBottom, oldyinversion));
479	#endif
480
481	if(fFlip & FLIP_HOR)
482	{
483	ULONG x;
484	x = point[0].x;
485	point[0].x = point[1].x;
486	point[1].x = x;
487	}
488
489	ULONG os2mode, winmode;
490
491	os2mode = BBO_OR;
492	winmode = GetStretchBltMode(hdcDest);
493	switch(winmode) {
494	case BLACKONWHITE_W:
495	os2mode = BBO_AND;
496	break;
497	case WHITEONBLACK_W:
498	case HALFTONE_W: //TODO:
499	os2mode = BBO_OR;
500	break;
501	case COLORONCOLOR_W:
502	os2mode = BBO_IGNORE;
503	break;
504	}
505	#ifndef INVERT
506	if(!(fFlip & FLIP_VERT)) {
507	#else
508	if(fFlip & FLIP_VERT) {
509	#endif
510	//manually reverse bitmap data
511	char src = bmpBits + (pOS2bmp->cy-1)dibinfo.dsBm.bmWidthBytes;
512	char *dst = bmpBitsDblBuffer;
513	for(int i=0;i<pOS2bmp->cy;i++) {
514	memcpy(dst, src, dibinfo.dsBm.bmWidthBytes);
515	dst += dibinfo.dsBm.bmWidthBytes;
516	src -= dibinfo.dsBm.bmWidthBytes;
517	}
518	bitmapBits = bmpBitsDblBuffer;
519	}
520	else bitmapBits = bmpBits;
521
522	//Translate ROP
523	Rop = Rop >> 16;
524
525	//SvL: Optimize this.. (don't convert entire bitmap if only a part will be blitted to the dc)
526	if(dibinfo.dsBitfields[1] == 0x3E0) {//RGB 555?
527	dprintf(("DIBSection::BitBlt; convert rgb 555 to 565 (old y inv. = %d)", oldyinversion));
528
529	if(bmpBitsDblBuffer == NULL)
530	DebugInt3();
531
532	// PH 2000/10/01 - Fix for Beyond Compare 1.9d
533	// Note: according to documentation, cmImage can be zero for
534	// RGB- / non-compressed bitmaps.
535	int iLength = pOS2bmp->cbImage;
536	if (iLength == 0)
537	iLength = pOS2bmp->cx * pOS2bmp->cy * (pOS2bmp->cBitCount >> 3);
538
539	if (iLength > 0)
540	{
541	pRGB555to565((WORD )bmpBitsDblBuffer, (WORD )bitmapBits, iLength/sizeof(WORD));
542	}
543	else
544	{
545	dprintf(("GDI32: DIBSect::BitBlt: WARNING! zero-length bitmap! %08xh", pOS2bmp));
546	}
547	rc = GpiDrawBits(hps, bmpBitsDblBuffer, pOS2bmp, 4, &point[0], Rop, os2mode);
548	}
549	else {
550	rc = GpiDrawBits(hps, bitmapBits, pOS2bmp, 4, &point[0], Rop, os2mode);
551	}
552	if(rc == GPI_OK) {
553	#ifdef INVERT
554	//restore old y inversion height
555	if(fRestoryYInversion) GpiEnableYInversion(hps, oldyinversion);
556	#endif
557	SetLastError(ERROR_SUCCESS_W);
558
559	return(TRUE);
560	}
561	#ifdef INVERT
562	if(fRestoryYInversion) GpiEnableYInversion(hps, oldyinversion);
563	#endif
564
565	dprintf(("DIBSection::BitBlt %X (%d,%d) (%d,%d) to (%d,%d) (%d,%d) returned %d\n", hps, point[0].x, point[0].y, point[1].x, point[1].y, point[2].x, point[2].y, point[3].x, point[3].y, rc));
566	dprintf(("WinGetLastError returned %X\n", WinGetLastError(WinQueryAnchorBlock(hwndDest)) & 0xFFFF));
567	return(FALSE);
568	}
569	//******************************************************************************
570	//******************************************************************************
571	void DIBSection::sync(HDC hdc, DWORD nYdest, DWORD nDestHeight, BOOL orgYInversion)
572	{
573	APIRET rc;
574	char *destBuf;
575
576	dprintf(("Sync destination dibsection %x (%x) (%d,%d) flip %d", hBitmap, hdc, nYdest, nDestHeight, fFlip));
577
578	BITMAPINFO2 tmphdr = (BITMAPINFO2 )malloc(os2bmphdrsize);
579	memcpy(tmphdr, pOS2bmp, os2bmphdrsize);
580
581	#ifdef INVERT
582	int oldyinversion = 0;
583	if(orgYInversion == TRUE) {
584	oldyinversion = GpiQueryYInversion(hdc);
585	dprintf(("Sync destination dibsection: hdc y inversion = %d", oldyinversion));
586	if(oldyinversion != 0) {
587	#ifdef DEBUG
588	POINT point;
589	GetViewportOrgEx(hdc, &point);
590	dprintf(("Viewport origin (%d,%d)", point.x, point.y));
591	#endif
592	GpiEnableYInversion(hdc, 0);
593	}
594	}
595	#else
596	dprintf(("Sync destination dibsection: hdc y inversion = %d", GpiQueryYInversion(hdc)));
597	#endif
598
599	#ifndef INVERT
600	if(!(fFlip & FLIP_VERT)) {
601	#else
602	if(fFlip & FLIP_VERT) {
603	#endif
604	//origin is top left, so no y conversion is necessary
605	destBuf = bmpBitsDblBuffer + nYdest*dibinfo.dsBm.bmWidthBytes;
606
607	//SvL: cbImage can be too small for compressed images; GpiQueryBitmapBits
608	// will fail in that case (CoolEdit 2000). Perhaps because the returned
609	// compressed image is larger than the original.
610	// Use uncompressed size instead
611	// NOTE: The correct size will be returned by GpiQueryBitmapBits
612	tmphdr->cbImage = dibinfo.dsBm.bmHeight*dibinfo.dsBm.bmWidthBytes;
613
614	#ifdef INVERT
615	int dest = dibinfo.dsBm.bmHeight - nYdest - nDestHeight;
616	#else
617	int dest = nYdest;
618	#endif
619	rc = GpiQueryBitmapBits(hdc, dest, nDestHeight, destBuf,
620	tmphdr);
621	if(rc == GPI_ALTERROR) {
622	dprintf(("ERROR: GpiQueryBitmapBits failed with %x", WinGetLastError(0)));
623	}
624
625	//manually reverse bitmap data
626	char *src = destBuf;
627	char dst = GetDIBObject() + (nYdest+nDestHeight-1)dibinfo.dsBm.bmWidthBytes;
628	for(int i=0;i<nDestHeight;i++) {
629	memcpy(dst, src, dibinfo.dsBm.bmWidthBytes);
630	dst -= dibinfo.dsBm.bmWidthBytes;
631	src += dibinfo.dsBm.bmWidthBytes;
632	}
633	}
634	else {
635	//SvL: cbImage can be too small for compressed images; GpiQueryBitmapBits
636	// will fail in that case (CoolEdit 2000). Perhaps because the returned
637	// compressed image is larger than the original.
638	// Use uncompressed size instead
639	// NOTE: The correct size will be returned by GpiQueryBitmapBits
640	tmphdr->cbImage = dibinfo.dsBm.bmHeight*dibinfo.dsBm.bmWidthBytes;
641
642	//origin is bottom left, nYdest is based on top left coordinate system
643	#ifdef INVERT
644	int dest = dibinfo.dsBm.bmHeight - nYdest - nDestHeight;
645	#else
646	int dest = nYdest;
647	#endif
648
649	destBuf = GetDIBObject() + dest*dibinfo.dsBm.bmWidthBytes;
650
651	rc = GpiQueryBitmapBits(hdc, dest, nDestHeight, destBuf,
652	tmphdr);
653	if(rc == GPI_ALTERROR) {
654	dprintf(("ERROR: GpiQueryBitmapBits failed with %x", WinGetLastError(0)));
655	}
656	#ifdef DEBUG_PALETTE
657	if(rc != GPI_ALTERROR && tmphdr->cBitCount <= 8) {
658	for(int i=0;i<(1<<tmphdr->cBitCount);i++)
659	{
660	dprintf2(("Index %d : 0x%08X\n",i, ((ULONG)(&tmphdr->argbColor[i])) ));
661	}
662	}
663	#endif
664	}
665	memcpy(pOS2bmp, tmphdr, os2bmphdrsize);
666
667	if(dibinfo.dsBitfields[1] == 0x3E0) {//RGB 555?
668	dprintf(("DIBSection::sync: convert RGB 565 to RGB 555"));
669
670	destBuf = GetDIBObject() + nYdest*dibinfo.dsBm.bmWidthBytes;
671
672	pRGB565to555((WORD )destBuf, (WORD )destBuf, (nDestHeight*dibinfo.dsBm.bmWidthBytes)/sizeof(WORD));
673	}
674
675	free(tmphdr);
676	if(rc != nDestHeight) {
677	dprintf(("!WARNING!: GpiQueryBitmapBits returned %d instead of %d scanlines", rc, nDestHeight));
678	}
679
680	#ifdef INVERT
681	if(oldyinversion) GpiEnableYInversion(hdc, oldyinversion);
682	#endif
683
684	}
685	//******************************************************************************
686	//******************************************************************************
687	void DIBSection::flush(HDC hdc, DWORD nYdest, DWORD nDestHeight, BOOL orgYInversion)
688	{
689	APIRET rc;
690	char *destBuf;
691
692	dprintf(("flush destination dibsection %x (%x) (%d,%d) flip %d", hBitmap, hdc, nYdest, nDestHeight, fFlip));
693
694	#ifdef INVERT
695	int oldyinversion = 0;
696	if(orgYInversion == TRUE) {
697	oldyinversion = GpiQueryYInversion(hdc);
698	dprintf(("Flush destination dibsection: hdc y inversion = %d", oldyinversion));
699	if(oldyinversion != 0) {
700	#ifdef DEBUG
701	POINT point;
702	GetViewportOrgEx(hdc, &point);
703	dprintf(("Viewport origin (%d,%d)", point.x, point.y));
704	#endif
705	GpiEnableYInversion(hdc, 0);
706	}
707	}
708	#else
709	dprintf(("flush destination dibsection: hdc y inversion = %d", GpiQueryYInversion(hdc)));
710	#endif
711
712	#ifndef INVERT
713	if(!(fFlip & FLIP_VERT)) {
714	#else
715	if(fFlip & FLIP_VERT) {
716	#endif
717	//origin is top left, so no y conversion is necessary
718	destBuf = bmpBitsDblBuffer + nYdest*dibinfo.dsBm.bmWidthBytes;
719
720	//SvL: cbImage can be too small for compressed images; GpiQueryBitmapBits
721	// will fail in that case (CoolEdit 2000). Perhaps because the returned
722	// compressed image is larger than the original.
723	// Use uncompressed size instead
724	// NOTE: The correct size will be returned by GpiQueryBitmapBits
725	pOS2bmp->cbImage = dibinfo.dsBm.bmHeight*dibinfo.dsBm.bmWidthBytes;
726
727	//manually reverse bitmap data
728	char src = GetDIBObject() + (nYdest+nDestHeight-1)dibinfo.dsBm.bmWidthBytes;
729	char *dst = destBuf;
730	for(int i=0;i<nDestHeight;i++) {
731	memcpy(dst, src, dibinfo.dsBm.bmWidthBytes);
732	dst += dibinfo.dsBm.bmWidthBytes;
733	src -= dibinfo.dsBm.bmWidthBytes;
734	}
735
736	if(dibinfo.dsBitfields[1] == 0x3E0) {//RGB 555?
737	dprintf(("DIBSection::flush: convert RGB 565 to RGB 555"));
738
739	pRGB565to555((WORD )destBuf, (WORD )destBuf, (nDestHeight*dibinfo.dsBm.bmWidthBytes)/sizeof(WORD));
740	}
741
742	#ifdef INVERT
743	int dest = dibinfo.dsBm.bmHeight - nYdest - nDestHeight;
744	#else
745	int dest = nYdest;
746	#endif
747	rc = GpiSetBitmapBits(hdc, dest, nDestHeight, destBuf,
748	pOS2bmp);
749	if(rc == GPI_ALTERROR) {
750	dprintf(("ERROR: GpiQueryBitmapBits failed with %x", WinGetLastError(0)));
751	}
752
753	}
754	else {
755	//SvL: cbImage can be too small for compressed images; GpiQueryBitmapBits
756	// will fail in that case (CoolEdit 2000). Perhaps because the returned
757	// compressed image is larger than the original.
758	// Use uncompressed size instead
759	// NOTE: The correct size will be returned by GpiQueryBitmapBits
760	pOS2bmp->cbImage = dibinfo.dsBm.bmHeight*dibinfo.dsBm.bmWidthBytes;
761
762	//origin is bottom left, nYdest is based on top left coordinate system
763	#ifdef INVERT
764	int dest = dibinfo.dsBm.bmHeight - nYdest - nDestHeight;
765	#else
766	int dest = nYdest;
767	#endif
768
769	destBuf = GetDIBObject() + dest*dibinfo.dsBm.bmWidthBytes;
770
771	if(dibinfo.dsBitfields[1] == 0x3E0) {//RGB 555?
772	dprintf(("DIBSection::flush: convert RGB 565 to RGB 555"));
773
774	pRGB565to555((WORD )bmpBitsDblBuffer, (WORD )destBuf, (nDestHeight*dibinfo.dsBm.bmWidthBytes)/sizeof(WORD));
775	destBuf = bmpBitsDblBuffer;
776	}
777
778	rc = GpiSetBitmapBits(hdc, dest, nDestHeight, destBuf,
779	pOS2bmp);
780	if(rc == GPI_ALTERROR) {
781	dprintf(("ERROR: GpiQueryBitmapBits failed with %x", WinGetLastError(0)));
782	}
783	#ifdef DEBUG_PALETTE
784	if(rc != GPI_ALTERROR && pOS2bmp->cBitCount <= 8) {
785	for(int i=0;i<(1<<pOS2bmp->cBitCount);i++)
786	{
787	dprintf2(("Index %d : 0x%08X\n",i, ((ULONG)(&pOS2bmp->argbColor[i])) ));
788	}
789	}
790	#endif
791	}
792	if(rc != nDestHeight) {
793	dprintf(("!WARNING!: GpiQueryBitmapBits returned %d instead of %d scanlines", rc, nDestHeight));
794	}
795
796	#ifdef INVERT
797	if(oldyinversion) GpiEnableYInversion(hdc, oldyinversion);
798	#endif
799
800	}
801	//******************************************************************************
802	//Mark the DIB section as invalid; a subsequent read or write access must
803	//cause a pagefault
804	//******************************************************************************
805	void DIBSection::setInvalid()
806	{
807	if(!fInvalid) {
808	dprintf(("DIBSection::setInvalid %x (%x)", GetBitmapHandle(), GetDIBObject()));
809	APIRET rc = DosSetMem(bmpBits, dwSize, PAG_DECOMMIT);
810	if(rc) {
811	dprintf(("DIBSection::setInvalid: DosSetMem failed with %d!!", rc));
812	DebugInt3();
813	}
814	fInvalid = TRUE;
815	}
816	}
817	//******************************************************************************
818	//******************************************************************************
819	void DIBSection::flush()
820	{
821	if(pOS2bmp == NULL) {
822	DebugInt3();
823	return;
824	}
825	if(hdc == 0) {
826	HBITMAP hOldBmp;
827	HDC hdcFlush = CreateCompatibleDC(0);
828
829	hOldBmp = SelectObject(hdcFlush, hBitmap);
830	flush(hdcFlush, 0, pOS2bmp->cy);
831
832	SelectObject(hdcFlush, hOldBmp);
833	DeleteDC(hdcFlush);
834	}
835	else flush(hdc, 0, pOS2bmp->cy);
836
837	APIRET rc = DosSetMem(bmpBits, dwSize, PAG_READ);
838	if(rc) {
839	dprintf(("DIBSection::flush: DosSetMem failed with %d!!", rc));
840	DebugInt3();
841	}
842	fDirty = FALSE;
843	}
844	//******************************************************************************
845	//******************************************************************************
846	void DIBSection::sync()
847	{
848	if(pOS2bmp == NULL) {
849	DebugInt3();
850	return;
851	}
852	APIRET rc = DosSetMem(bmpBits, dwSize, PAG_COMMIT\|PAG_READ\|PAG_WRITE);
853	if(rc) {
854	//might already be committed
855	rc = DosSetMem(bmpBits, dwSize, PAG_READ\|PAG_WRITE);
856	if(rc) {
857	dprintf(("DIBSection::sync: DosSetMem failed with %d!!", rc));
858	DebugInt3();
859	}
860	}
861	if(hdc == 0) {
862	HBITMAP hOldBmp;
863	HDC hdcFlush = CreateCompatibleDC(0);
864
865	hOldBmp = SelectObject(hdcFlush, hBitmap);
866	sync(hdcFlush, 0, pOS2bmp->cy);
867
868	SelectObject(hdcFlush, hOldBmp);
869	DeleteDC(hdcFlush);
870	}
871	else sync(hdc, 0, pOS2bmp->cy);
872
873	fInvalid = FALSE;
874
875	//Set bitmap memory to readonly again to detect updates
876	rc = DosSetMem(bmpBits, dwSize, PAG_READ);
877	if(rc) {
878	dprintf(("DosSetMem failed with %d!!", rc));
879	DebugInt3();
880	}
881	}
882	//******************************************************************************
883	//******************************************************************************
884	void DIBSection::syncAll()
885	{
886	if (!section)
887	return;
888
889	lock();
890	DIBSection *dsect = section;
891
892	do
893	{
894	if(dsect->isDirty() && dsect->isInvalid()) {
895	DebugInt3();
896	}
897	if(dsect->isInvalid())
898	{
899	dsect->sync();
900	}
901	dsect = dsect->next;
902	}
903	while(dsect);
904
905	unlock();
906
907	return;
908	}
909	//******************************************************************************
910	//manual sync if no stretching and bpp is the same
911	//WARNING: this also assumes the colortables are the same
912	//******************************************************************************
913	void DIBSection::sync(DWORD xDst, DWORD yDst, DWORD widthDst, DWORD heightDst, PVOID bits)
914	{
915	char srcbuf, destbuf;
916	int linesize;
917
918	srcbuf = (char )bits + dibinfo.dsBm.bmWidthBytesyDst +
919	(xDst*dibinfo.dsBm.bmWidthBytes)/pOS2bmp->cx;
920	destbuf = (char )GetDIBObject() + dibinfo.dsBm.bmWidthBytesyDst +
921	(xDst*dibinfo.dsBm.bmWidthBytes)/pOS2bmp->cx;
922	linesize = (widthDst*dibinfo.dsBm.bmWidthBytes)/pOS2bmp->cx;
923	for(int i=0;i<heightDst;i++) {
924	memcpy(destbuf, srcbuf, linesize);
925	destbuf += dibinfo.dsBm.bmWidthBytes;
926	srcbuf += linesize;
927	}
928	}
929	//******************************************************************************
930	//******************************************************************************
931	void DIBSection::SelectDIBObject(HDC hdc)
932	{
933	this->hdc = hdc;
934	hwndParent = WindowFromDC(hdc);
935	dprintf(("SelectDIBObject %x into %x hwndParent = %x", hBitmap, hdc, hwndParent));
936	}
937	//******************************************************************************
938	//******************************************************************************
939	DIBSection *DIBSection::findObj(HBITMAP hBitmap)
940	{
941	// PH 2001-08-18 shortcut for performance optimization
942	if (!section)
943	return NULL;
944
945	lock();
946	DIBSection *dsect = section;
947
948	do
949	{
950	if(dsect->hBitmap == hBitmap)
951	{
952	unlock();
953	return(dsect);
954	}
955	dsect = dsect->next;
956	}
957	while(dsect);
958
959	unlock();
960	return(NULL);
961	}
962	//******************************************************************************
963	//A bitmap can only be selected into one DC, so this works.
964	//******************************************************************************
965	DIBSection *DIBSection::findHDC(HDC hdc)
966	{
967	// PH 2001-08-18 shortcut for performance optimization
968	if (!section)
969	return NULL;
970
971	lock();
972	DIBSection *dsect = section;
973
974	do
975	{
976	if(dsect->hdc == hdc)
977	{
978	unlock();
979	return(dsect);
980	}
981	dsect = dsect->next;
982	}
983	while(dsect);
984
985	unlock();
986	return(NULL);
987	}
988	//******************************************************************************
989	//******************************************************************************
990	void DIBSection::deleteSection(HBITMAP hBitmap)
991	{
992	DIBSection *dsect = findObj(hBitmap);
993
994	if(dsect)
995	delete dsect;
996	}
997	//******************************************************************************
998	//******************************************************************************
999	int DIBSection::GetDIBSection(int iSize, void *lpBuffer)
1000	{
1001	DIBSECTION pDIBSection = (DIBSECTION )lpBuffer;
1002	LPBITMAP_W dsBm = (LPBITMAP_W)lpBuffer;
1003
1004	dprintf2(("GetDIBSection %x %d %x", hBitmap, iSize, lpBuffer));
1005	if(iSize == sizeof(DIBSECTION))
1006	{
1007	memcpy(pDIBSection, &dibinfo, sizeof(dibinfo));
1008	return sizeof(DIBSECTION);
1009	}
1010	else
1011	if(iSize == sizeof(BITMAP_W))
1012	{
1013	memcpy(dsBm, &dibinfo.dsBm, sizeof(dibinfo.dsBm));
1014	return sizeof(BITMAP_W);
1015	}
1016	return 0;
1017
1018	}
1019	//******************************************************************************
1020	//******************************************************************************
1021	int DIBSection::GetBitCount()
1022	{
1023	if(pOS2bmp == NULL)
1024	return 0;
1025	else
1026	return pOS2bmp->cBitCount;
1027	}
1028	//******************************************************************************
1029	//******************************************************************************
1030	int DIBSection::GetHeight()
1031	{
1032	if(pOS2bmp == NULL)
1033	return 0;
1034	else
1035	return pOS2bmp->cy;
1036	}
1037	//******************************************************************************
1038	//******************************************************************************
1039	int DIBSection::GetWidth()
1040	{
1041	if(pOS2bmp == NULL)
1042	return 0;
1043	else
1044	return pOS2bmp->cx;
1045	}
1046	//******************************************************************************
1047	//******************************************************************************
1048	void DIBSection::initDIBSection()
1049	{
1050	InitializeCriticalSection(&dibcritsect);
1051	}
1052	//******************************************************************************
1053	//******************************************************************************
1054	DIBSection *DIBSection::section = NULL;
1055	CRITICAL_SECTION DIBSection::dibcritsect;
1056
1057
1058	//******************************************************************************
1059	//******************************************************************************
1060	static BOOL WIN32API DIBExceptionNotify(LPVOID lpBase, ULONG offset, BOOL fWriteAccess,
1061	DWORD dwSize, DWORD dwUserData)
1062	{
1063	DIBSection *dsect;
1064	HBITMAP hBitmap = (HBITMAP)dwUserData;
1065
1066	dprintf(("DIBExceptionNotify %x %x %d %d %x", lpBase, offset, fWriteAccess, dwSize, dwUserData));
1067
1068	dsect = DIBSection::findObj(hBitmap);
1069	if(dsect == NULL) {
1070	dprintf(("dib section not found!!"));
1071	DebugInt3();
1072	return FALSE;
1073	}
1074	if(dsect->isInvalid())
1075	{//implies read or write to reserved pages
1076	//synchronize bitmap memory and bitmap object
1077	dsect->sync();
1078	}
1079	else
1080	if(!fWriteAccess) {
1081	APIRET rc = DosSetMem(lpBase, dwSize, PAG_READ\|PAG_COMMIT);
1082	if(rc) {
1083	dprintf(("DosSetMem failed with %d!!", rc));
1084	DebugInt3();
1085	return FALSE;
1086	}
1087	}
1088
1089	if(fWriteAccess) {
1090	APIRET rc = DosSetMem(lpBase, dwSize, PAG_READ\|PAG_WRITE);
1091	if(rc) {
1092	dprintf(("DosSetMem failed with %d!!", rc));
1093	DebugInt3();
1094	return FALSE;
1095	}
1096	dsect->setDirty();
1097	}
1098
1099
1100	return TRUE;
1101	}
1102	//******************************************************************************
1103	//******************************************************************************

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