1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 // MARKER(update_precomp.py): autogen include statement, do not remove 23 #include "precompiled_vcl.hxx" 24 25 #include <tools/svwin.h> 26 #include <vcl/bitmap.hxx> // for BitmapSystemData 27 #include <vcl/salbtype.hxx> 28 #include <win/wincomp.hxx> 29 #include <win/salgdi.h> 30 #include <win/saldata.hxx> 31 #include <win/salbmp.h> 32 #include <string.h> 33 #include <vcl/timer.hxx> 34 #include <comphelper/broadcasthelper.hxx> 35 #include <map> 36 37 #ifndef min 38 #define min(a,b) (((a) < (b)) ? (a) : (b)) 39 #endif 40 #ifndef max 41 #define max(a,b) (((a) > (b)) ? (a) : (b)) 42 #endif 43 44 #include <GdiPlus.h> 45 46 // ------------------------------------------------------------------ 47 // - Inlines - 48 49 inline void ImplSetPixel4( const HPBYTE pScanline, long nX, const BYTE cIndex ) 50 { 51 BYTE& rByte = pScanline[ nX >> 1 ]; 52 53 ( nX & 1 ) ? ( rByte &= 0xf0, rByte |= ( cIndex & 0x0f ) ) : 54 ( rByte &= 0x0f, rByte |= ( cIndex << 4 ) ); 55 } 56 57 // ------------------------------------------------------------------ 58 // Helper class to manage Gdiplus::Bitmap instances inside of 59 // WinSalBitmap 60 61 struct Comparator 62 { 63 bool operator()(WinSalBitmap* pA, WinSalBitmap* pB) const 64 { 65 return pA < pB; 66 } 67 }; 68 69 typedef ::std::map< WinSalBitmap*, sal_uInt32, Comparator > EntryMap; 70 static const sal_uInt32 nDefaultCycles(60); 71 72 class GdiPlusBuffer : protected comphelper::OBaseMutex, public Timer 73 { 74 private: 75 EntryMap maEntries; 76 77 public: 78 GdiPlusBuffer() 79 : Timer(), 80 maEntries() 81 { 82 SetTimeout(1000); 83 Stop(); 84 } 85 86 ~GdiPlusBuffer() 87 { 88 Stop(); 89 } 90 91 void addEntry(WinSalBitmap& rEntry) 92 { 93 ::osl::MutexGuard aGuard(m_aMutex); 94 EntryMap::iterator aFound = maEntries.find(&rEntry); 95 96 if(aFound == maEntries.end()) 97 { 98 if(maEntries.empty()) 99 { 100 Start(); 101 } 102 103 maEntries[&rEntry] = nDefaultCycles; 104 } 105 } 106 107 void remEntry(WinSalBitmap& rEntry) 108 { 109 ::osl::MutexGuard aGuard(m_aMutex); 110 EntryMap::iterator aFound = maEntries.find(&rEntry); 111 112 if(aFound != maEntries.end()) 113 { 114 maEntries.erase(aFound); 115 116 if(maEntries.empty()) 117 { 118 Stop(); 119 } 120 } 121 } 122 123 void touchEntry(WinSalBitmap& rEntry) 124 { 125 ::osl::MutexGuard aGuard(m_aMutex); 126 EntryMap::iterator aFound = maEntries.find(&rEntry); 127 128 if(aFound != maEntries.end()) 129 { 130 aFound->second = nDefaultCycles; 131 } 132 } 133 134 // from parent Timer 135 virtual void Timeout() 136 { 137 ::osl::MutexGuard aGuard(m_aMutex); 138 EntryMap::iterator aIter(maEntries.begin()); 139 140 while(aIter != maEntries.end()) 141 { 142 if(aIter->second) 143 { 144 aIter->second--; 145 aIter++; 146 } 147 else 148 { 149 EntryMap::iterator aDelete(aIter); 150 WinSalBitmap* pSource = aDelete->first; 151 aIter++; 152 maEntries.erase(aDelete); 153 154 if(maEntries.empty()) 155 { 156 Stop(); 157 } 158 159 // delete at WinSalBitmap after entry is removed; this 160 // way it would not hurt to call remEntry from there, too 161 if(pSource->maGdiPlusBitmap.get()) 162 { 163 pSource->maGdiPlusBitmap.reset(); 164 pSource->mpAssociatedAlpha = 0; 165 } 166 } 167 } 168 169 if(!maEntries.empty()) 170 { 171 Start(); 172 } 173 } 174 }; 175 176 // ------------------------------------------------------------------ 177 // Global instance of GdiPlusBuffer which manages Gdiplus::Bitmap 178 // instances 179 180 static GdiPlusBuffer aGdiPlusBuffer; 181 182 // ------------------------------------------------------------------ 183 // - WinSalBitmap - 184 185 WinSalBitmap::WinSalBitmap() 186 : maSize(), 187 mhDIB(0), 188 mhDDB(0), 189 maGdiPlusBitmap(), 190 mpAssociatedAlpha(0), 191 mnBitCount(0) 192 { 193 } 194 195 // ------------------------------------------------------------------ 196 197 WinSalBitmap::~WinSalBitmap() 198 { 199 Destroy(); 200 } 201 202 // ------------------------------------------------------------------ 203 204 void WinSalBitmap::Destroy() 205 { 206 if(maGdiPlusBitmap.get()) 207 { 208 aGdiPlusBuffer.remEntry(*this); 209 } 210 211 if( mhDIB ) 212 GlobalFree( mhDIB ); 213 else if( mhDDB ) 214 DeleteObject( mhDDB ); 215 216 maSize = Size(); 217 mnBitCount = 0; 218 } 219 220 // ------------------------------------------------------------------ 221 222 GdiPlusBmpPtr WinSalBitmap::ImplGetGdiPlusBitmap(const WinSalBitmap* pAlphaSource) const 223 { 224 WinSalBitmap* pThat = const_cast< WinSalBitmap* >(this); 225 226 if(maGdiPlusBitmap.get() && pAlphaSource != mpAssociatedAlpha) 227 { 228 // #122350# if associated alpha with which the GDIPlus was constructed has changed 229 // it is necessary to remove it from buffer, reset reference to it and reconstruct 230 pThat->maGdiPlusBitmap.reset(); 231 aGdiPlusBuffer.remEntry(const_cast< WinSalBitmap& >(*this)); 232 } 233 234 if(maGdiPlusBitmap.get()) 235 { 236 aGdiPlusBuffer.touchEntry(const_cast< WinSalBitmap& >(*this)); 237 } 238 else 239 { 240 if(maSize.Width() > 0 && maSize.Height() > 0) 241 { 242 if(pAlphaSource) 243 { 244 pThat->maGdiPlusBitmap.reset(pThat->ImplCreateGdiPlusBitmap(*pAlphaSource)); 245 pThat->mpAssociatedAlpha = pAlphaSource; 246 } 247 else 248 { 249 pThat->maGdiPlusBitmap.reset(pThat->ImplCreateGdiPlusBitmap()); 250 pThat->mpAssociatedAlpha = 0; 251 } 252 253 if(maGdiPlusBitmap.get()) 254 { 255 aGdiPlusBuffer.addEntry(*pThat); 256 } 257 } 258 } 259 260 return maGdiPlusBitmap; 261 } 262 263 // ------------------------------------------------------------------ 264 265 Gdiplus::Bitmap* WinSalBitmap::ImplCreateGdiPlusBitmap() 266 { 267 Gdiplus::Bitmap* pRetval(0); 268 WinSalBitmap* pSalRGB = const_cast< WinSalBitmap* >(this); 269 WinSalBitmap* pExtraWinSalRGB = 0; 270 271 if(!pSalRGB->ImplGethDIB()) 272 { 273 // we need DIB for success with AcquireBuffer, create a replacement WinSalBitmap 274 pExtraWinSalRGB = new WinSalBitmap(); 275 pExtraWinSalRGB->Create(*pSalRGB, pSalRGB->GetBitCount()); 276 pSalRGB = pExtraWinSalRGB; 277 } 278 279 BitmapBuffer* pRGB = pSalRGB->AcquireBuffer(true); 280 BitmapBuffer* pExtraRGB = 0; 281 282 if(pRGB && BMP_FORMAT_24BIT_TC_BGR != (pRGB->mnFormat & ~BMP_FORMAT_TOP_DOWN)) 283 { 284 // convert source bitmap to BMP_FORMAT_24BIT_TC_BGR format if not yet in that format 285 SalTwoRect aSalTwoRect; 286 287 aSalTwoRect.mnSrcX = aSalTwoRect.mnSrcY = aSalTwoRect.mnDestX = aSalTwoRect.mnDestY = 0; 288 aSalTwoRect.mnSrcWidth = aSalTwoRect.mnDestWidth = pRGB->mnWidth; 289 aSalTwoRect.mnSrcHeight = aSalTwoRect.mnDestHeight = pRGB->mnHeight; 290 291 pExtraRGB = StretchAndConvert( 292 *pRGB, 293 aSalTwoRect, 294 BMP_FORMAT_24BIT_TC_BGR, 295 0); 296 297 pSalRGB->ReleaseBuffer(pRGB, true); 298 pRGB = pExtraRGB; 299 } 300 301 if(pRGB 302 && pRGB->mnWidth > 0 303 && pRGB->mnHeight > 0 304 && BMP_FORMAT_24BIT_TC_BGR == (pRGB->mnFormat & ~BMP_FORMAT_TOP_DOWN)) 305 { 306 const sal_uInt32 nW(pRGB->mnWidth); 307 const sal_uInt32 nH(pRGB->mnHeight); 308 309 pRetval = new Gdiplus::Bitmap(nW, nH, PixelFormat24bppRGB); 310 311 if(pRetval) 312 { 313 if ( pRetval->GetLastStatus() == Gdiplus::Ok ) 314 { 315 sal_uInt8* pSrcRGB(pRGB->mpBits); 316 const sal_uInt32 nExtraRGB(pRGB->mnScanlineSize - (nW * 3)); 317 const bool bTopDown(pRGB->mnFormat & BMP_FORMAT_TOP_DOWN); 318 const Gdiplus::Rect aAllRect(0, 0, nW, nH); 319 Gdiplus::BitmapData aGdiPlusBitmapData; 320 pRetval->LockBits(&aAllRect, Gdiplus::ImageLockModeWrite, PixelFormat24bppRGB, &aGdiPlusBitmapData); 321 322 // copy data to Gdiplus::Bitmap; format is BGR here in both cases, so memcpy is possible 323 for(sal_uInt32 y(0); y < nH; y++) 324 { 325 const sal_uInt32 nYInsert(bTopDown ? y : nH - y - 1); 326 sal_uInt8* targetPixels = (sal_uInt8*)aGdiPlusBitmapData.Scan0 + (nYInsert * aGdiPlusBitmapData.Stride); 327 328 memcpy(targetPixels, pSrcRGB, nW * 3); 329 pSrcRGB += nW * 3 + nExtraRGB; 330 } 331 332 pRetval->UnlockBits(&aGdiPlusBitmapData); 333 } 334 else 335 { 336 delete pRetval; 337 pRetval = NULL; 338 } 339 } 340 } 341 342 if(pExtraRGB) 343 { 344 // #123478# shockingly, BitmapBuffer does not free the memory it is controlling 345 // in it's destructor, this *has to be done handish*. Doing it here now 346 delete[] pExtraRGB->mpBits; 347 delete pExtraRGB; 348 } 349 else 350 { 351 pSalRGB->ReleaseBuffer(pRGB, true); 352 } 353 354 if(pExtraWinSalRGB) 355 { 356 delete pExtraWinSalRGB; 357 } 358 359 return pRetval; 360 } 361 362 // ------------------------------------------------------------------ 363 364 Gdiplus::Bitmap* WinSalBitmap::ImplCreateGdiPlusBitmap(const WinSalBitmap& rAlphaSource) 365 { 366 Gdiplus::Bitmap* pRetval(0); 367 WinSalBitmap* pSalRGB = const_cast< WinSalBitmap* >(this); 368 WinSalBitmap* pExtraWinSalRGB = 0; 369 370 if(!pSalRGB->ImplGethDIB()) 371 { 372 // we need DIB for success with AcquireBuffer, create a replacement WinSalBitmap 373 pExtraWinSalRGB = new WinSalBitmap(); 374 pExtraWinSalRGB->Create(*pSalRGB, pSalRGB->GetBitCount()); 375 pSalRGB = pExtraWinSalRGB; 376 } 377 378 BitmapBuffer* pRGB = pSalRGB->AcquireBuffer(true); 379 BitmapBuffer* pExtraRGB = 0; 380 381 if(pRGB && BMP_FORMAT_24BIT_TC_BGR != (pRGB->mnFormat & ~BMP_FORMAT_TOP_DOWN)) 382 { 383 // convert source bitmap to BMP_FORMAT_24BIT_TC_BGR format if not yet in that format 384 SalTwoRect aSalTwoRect; 385 386 aSalTwoRect.mnSrcX = aSalTwoRect.mnSrcY = aSalTwoRect.mnDestX = aSalTwoRect.mnDestY = 0; 387 aSalTwoRect.mnSrcWidth = aSalTwoRect.mnDestWidth = pRGB->mnWidth; 388 aSalTwoRect.mnSrcHeight = aSalTwoRect.mnDestHeight = pRGB->mnHeight; 389 390 pExtraRGB = StretchAndConvert( 391 *pRGB, 392 aSalTwoRect, 393 BMP_FORMAT_24BIT_TC_BGR, 394 0); 395 396 pSalRGB->ReleaseBuffer(pRGB, true); 397 pRGB = pExtraRGB; 398 } 399 400 WinSalBitmap* pSalA = const_cast< WinSalBitmap* >(&rAlphaSource); 401 WinSalBitmap* pExtraWinSalA = 0; 402 403 if(!pSalA->ImplGethDIB()) 404 { 405 // we need DIB for success with AcquireBuffer, create a replacement WinSalBitmap 406 pExtraWinSalA = new WinSalBitmap(); 407 pExtraWinSalA->Create(*pSalA, pSalA->GetBitCount()); 408 pSalA = pExtraWinSalA; 409 } 410 411 BitmapBuffer* pA = pSalA->AcquireBuffer(true); 412 BitmapBuffer* pExtraA = 0; 413 414 if(pA && BMP_FORMAT_8BIT_PAL != (pA->mnFormat & ~BMP_FORMAT_TOP_DOWN)) 415 { 416 // convert alpha bitmap to BMP_FORMAT_8BIT_PAL format if not yet in that format 417 SalTwoRect aSalTwoRect; 418 419 aSalTwoRect.mnSrcX = aSalTwoRect.mnSrcY = aSalTwoRect.mnDestX = aSalTwoRect.mnDestY = 0; 420 aSalTwoRect.mnSrcWidth = aSalTwoRect.mnDestWidth = pA->mnWidth; 421 aSalTwoRect.mnSrcHeight = aSalTwoRect.mnDestHeight = pA->mnHeight; 422 const BitmapPalette& rTargetPalette = Bitmap::GetGreyPalette(256); 423 424 pExtraA = StretchAndConvert( 425 *pA, 426 aSalTwoRect, 427 BMP_FORMAT_8BIT_PAL, 428 &rTargetPalette); 429 430 pSalA->ReleaseBuffer(pA, true); 431 pA = pExtraA; 432 } 433 434 if(pRGB 435 && pA 436 && pRGB->mnWidth > 0 437 && pRGB->mnHeight > 0 438 && pRGB->mnWidth == pA->mnWidth 439 && pRGB->mnHeight == pA->mnHeight 440 && BMP_FORMAT_24BIT_TC_BGR == (pRGB->mnFormat & ~BMP_FORMAT_TOP_DOWN) 441 && BMP_FORMAT_8BIT_PAL == (pA->mnFormat & ~BMP_FORMAT_TOP_DOWN)) 442 { 443 // we have alpha and bitmap in known formats, create GdiPlus Bitmap as 32bit ARGB 444 const sal_uInt32 nW(pRGB->mnWidth); 445 const sal_uInt32 nH(pRGB->mnHeight); 446 447 pRetval = new Gdiplus::Bitmap(nW, nH, PixelFormat32bppARGB); 448 449 if(pRetval) 450 { 451 sal_uInt8* pSrcRGB(pRGB->mpBits); 452 sal_uInt8* pSrcA(pA->mpBits); 453 const sal_uInt32 nExtraRGB(pRGB->mnScanlineSize - (nW * 3)); 454 const sal_uInt32 nExtraA(pA->mnScanlineSize - nW); 455 const bool bTopDown(pRGB->mnFormat & BMP_FORMAT_TOP_DOWN); 456 const Gdiplus::Rect aAllRect(0, 0, nW, nH); 457 Gdiplus::BitmapData aGdiPlusBitmapData; 458 pRetval->LockBits(&aAllRect, Gdiplus::ImageLockModeWrite, PixelFormat32bppARGB, &aGdiPlusBitmapData); 459 460 // copy data to Gdiplus::Bitmap; format is BGRA; need to mix BGR from Bitmap and 461 // A from alpha, so inner loop is needed (who invented BitmapEx..?) 462 for(sal_uInt32 y(0); y < nH; y++) 463 { 464 const sal_uInt32 nYInsert(bTopDown ? y : nH - y - 1); 465 sal_uInt8* targetPixels = (sal_uInt8*)aGdiPlusBitmapData.Scan0 + (nYInsert * aGdiPlusBitmapData.Stride); 466 467 for(sal_uInt32 x(0); x < nW; x++) 468 { 469 *targetPixels++ = *pSrcRGB++; 470 *targetPixels++ = *pSrcRGB++; 471 *targetPixels++ = *pSrcRGB++; 472 *targetPixels++ = 0xff - *pSrcA++; 473 } 474 475 pSrcRGB += nExtraRGB; 476 pSrcA += nExtraA; 477 } 478 479 pRetval->UnlockBits(&aGdiPlusBitmapData); 480 } 481 } 482 483 if(pExtraA) 484 { 485 // #123478# shockingly, BitmapBuffer does not free the memory it is controlling 486 // in it's destructor, this *has to be done handish*. Doing it here now 487 delete[] pExtraA->mpBits; 488 delete pExtraA; 489 } 490 else 491 { 492 pSalA->ReleaseBuffer(pA, true); 493 } 494 495 if(pExtraWinSalA) 496 { 497 delete pExtraWinSalA; 498 } 499 500 if(pExtraRGB) 501 { 502 // #123478# shockingly, BitmapBuffer does not free the memory it is controlling 503 // in it's destructor, this *has to be done handish*. Doing it here now 504 delete[] pExtraRGB->mpBits; 505 delete pExtraRGB; 506 } 507 else 508 { 509 pSalRGB->ReleaseBuffer(pRGB, true); 510 } 511 512 if(pExtraWinSalRGB) 513 { 514 delete pExtraWinSalRGB; 515 } 516 517 return pRetval; 518 } 519 520 // ------------------------------------------------------------------ 521 522 bool WinSalBitmap::Create( HANDLE hBitmap, bool bDIB, bool bCopyHandle ) 523 { 524 bool bRet = TRUE; 525 526 if( bDIB ) 527 mhDIB = (HGLOBAL) ( bCopyHandle ? ImplCopyDIBOrDDB( hBitmap, TRUE ) : hBitmap ); 528 else 529 mhDDB = (HBITMAP) ( bCopyHandle ? ImplCopyDIBOrDDB( hBitmap, FALSE ) : hBitmap ); 530 531 if( mhDIB ) 532 { 533 PBITMAPINFOHEADER pBIH = (PBITMAPINFOHEADER) GlobalLock( mhDIB ); 534 535 maSize = Size( pBIH->biWidth, pBIH->biHeight ); 536 mnBitCount = pBIH->biBitCount; 537 538 if( mnBitCount ) 539 mnBitCount = ( mnBitCount <= 1 ) ? 1 : ( mnBitCount <= 4 ) ? 4 : ( mnBitCount <= 8 ) ? 8 : 24; 540 541 GlobalUnlock( mhDIB ); 542 } 543 else if( mhDDB ) 544 { 545 BITMAP aDDBInfo; 546 547 if( WIN_GetObject( mhDDB, sizeof( BITMAP ), &aDDBInfo ) ) 548 { 549 maSize = Size( aDDBInfo.bmWidth, aDDBInfo.bmHeight ); 550 mnBitCount = aDDBInfo.bmPlanes * aDDBInfo.bmBitsPixel; 551 552 if( mnBitCount ) 553 { 554 mnBitCount = ( mnBitCount <= 1 ) ? 1 : 555 ( mnBitCount <= 4 ) ? 4 : 556 ( mnBitCount <= 8 ) ? 8 : 24; 557 } 558 } 559 else 560 { 561 mhDDB = 0; 562 bRet = FALSE; 563 } 564 } 565 else 566 bRet = FALSE; 567 568 return bRet; 569 } 570 571 // ------------------------------------------------------------------ 572 573 bool WinSalBitmap::Create( const Size& rSize, sal_uInt16 nBitCount, const BitmapPalette& rPal ) 574 { 575 bool bRet = FALSE; 576 577 mhDIB = ImplCreateDIB( rSize, nBitCount, rPal ); 578 579 if( mhDIB ) 580 { 581 maSize = rSize; 582 mnBitCount = nBitCount; 583 bRet = TRUE; 584 } 585 586 return bRet; 587 } 588 589 // ------------------------------------------------------------------ 590 591 bool WinSalBitmap::Create( const SalBitmap& rSSalBitmap ) 592 { 593 bool bRet = FALSE; 594 const WinSalBitmap& rSalBitmap = static_cast<const WinSalBitmap&>(rSSalBitmap); 595 596 if ( rSalBitmap.mhDIB || rSalBitmap.mhDDB ) 597 { 598 HANDLE hNewHdl = ImplCopyDIBOrDDB( rSalBitmap.mhDIB ? rSalBitmap.mhDIB : rSalBitmap.mhDDB, 599 rSalBitmap.mhDIB != 0 ); 600 601 if ( hNewHdl ) 602 { 603 if( rSalBitmap.mhDIB ) 604 mhDIB = (HGLOBAL) hNewHdl; 605 else if( rSalBitmap.mhDDB ) 606 mhDDB = (HBITMAP) hNewHdl; 607 608 maSize = rSalBitmap.maSize; 609 mnBitCount = rSalBitmap.mnBitCount; 610 611 bRet = TRUE; 612 } 613 } 614 615 return bRet; 616 } 617 618 // ------------------------------------------------------------------ 619 620 bool WinSalBitmap::Create( const SalBitmap& rSSalBmp, SalGraphics* pSGraphics ) 621 { 622 bool bRet = FALSE; 623 624 const WinSalBitmap& rSalBmp = static_cast<const WinSalBitmap&>(rSSalBmp); 625 WinSalGraphics* pGraphics = static_cast<WinSalGraphics*>(pSGraphics); 626 627 if( rSalBmp.mhDIB ) 628 { 629 PBITMAPINFO pBI = (PBITMAPINFO) GlobalLock( rSalBmp.mhDIB ); 630 PBITMAPINFOHEADER pBIH = (PBITMAPINFOHEADER) pBI; 631 HDC hDC = pGraphics->getHDC(); 632 HBITMAP hNewDDB; 633 BITMAP aDDBInfo; 634 PBYTE pBits = (PBYTE) pBI + *(DWORD*) pBI + 635 ImplGetDIBColorCount( rSalBmp.mhDIB ) * sizeof( RGBQUAD ); 636 637 if( pBIH->biBitCount == 1 ) 638 { 639 hNewDDB = CreateBitmap( pBIH->biWidth, pBIH->biHeight, 1, 1, NULL ); 640 641 if( hNewDDB ) 642 SetDIBits( hDC, hNewDDB, 0, pBIH->biHeight, pBits, pBI, DIB_RGB_COLORS ); 643 } 644 else 645 hNewDDB = CreateDIBitmap( hDC, (PBITMAPINFOHEADER) pBI, CBM_INIT, pBits, pBI, DIB_RGB_COLORS ); 646 647 GlobalUnlock( rSalBmp.mhDIB ); 648 649 if( hNewDDB && WIN_GetObject( hNewDDB, sizeof( BITMAP ), &aDDBInfo ) ) 650 { 651 mhDDB = hNewDDB; 652 maSize = Size( aDDBInfo.bmWidth, aDDBInfo.bmHeight ); 653 mnBitCount = aDDBInfo.bmPlanes * aDDBInfo.bmBitsPixel; 654 655 bRet = TRUE; 656 } 657 else if( hNewDDB ) 658 DeleteObject( hNewDDB ); 659 } 660 661 return bRet; 662 } 663 664 // ------------------------------------------------------------------ 665 666 bool WinSalBitmap::Create( const SalBitmap& rSSalBmp, sal_uInt16 nNewBitCount ) 667 { 668 bool bRet = FALSE; 669 670 const WinSalBitmap& rSalBmp = static_cast<const WinSalBitmap&>(rSSalBmp); 671 672 if( rSalBmp.mhDDB ) 673 { 674 mhDIB = ImplCreateDIB( rSalBmp.maSize, nNewBitCount, BitmapPalette() ); 675 676 if( mhDIB ) 677 { 678 PBITMAPINFO pBI = (PBITMAPINFO) GlobalLock( mhDIB ); 679 const int nLines = (int) rSalBmp.maSize.Height(); 680 HDC hDC = GetDC( 0 ); 681 PBYTE pBits = (PBYTE) pBI + *(DWORD*) pBI + 682 ImplGetDIBColorCount( mhDIB ) * sizeof( RGBQUAD ); 683 SalData* pSalData = GetSalData(); 684 HPALETTE hOldPal = 0; 685 686 if ( pSalData->mhDitherPal ) 687 { 688 hOldPal = SelectPalette( hDC, pSalData->mhDitherPal, TRUE ); 689 RealizePalette( hDC ); 690 } 691 692 if( GetDIBits( hDC, rSalBmp.mhDDB, 0, nLines, pBits, pBI, DIB_RGB_COLORS ) == nLines ) 693 { 694 GlobalUnlock( mhDIB ); 695 maSize = rSalBmp.maSize; 696 mnBitCount = nNewBitCount; 697 bRet = TRUE; 698 } 699 else 700 { 701 GlobalUnlock( mhDIB ); 702 GlobalFree( mhDIB ); 703 mhDIB = 0; 704 } 705 706 if( hOldPal ) 707 SelectPalette( hDC, hOldPal, TRUE ); 708 709 ReleaseDC( 0, hDC ); 710 } 711 } 712 713 return bRet; 714 } 715 716 // ------------------------------------------------------------------ 717 718 sal_uInt16 WinSalBitmap::ImplGetDIBColorCount( HGLOBAL hDIB ) 719 { 720 sal_uInt16 nColors = 0; 721 722 if( hDIB ) 723 { 724 PBITMAPINFO pBI = (PBITMAPINFO) GlobalLock( hDIB ); 725 PBITMAPINFOHEADER pBIH = (PBITMAPINFOHEADER) pBI; 726 727 if ( pBIH->biSize != sizeof( BITMAPCOREHEADER ) ) 728 { 729 if( pBIH->biBitCount <= 8 ) 730 { 731 if ( pBIH->biClrUsed ) 732 nColors = (sal_uInt16) pBIH->biClrUsed; 733 else 734 nColors = 1 << pBIH->biBitCount; 735 } 736 } 737 else if( ( (PBITMAPCOREHEADER) pBI )->bcBitCount <= 8 ) 738 nColors = 1 << ( (PBITMAPCOREHEADER) pBI )->bcBitCount; 739 740 GlobalUnlock( hDIB ); 741 } 742 743 return nColors; 744 } 745 746 // ------------------------------------------------------------------ 747 748 HGLOBAL WinSalBitmap::ImplCreateDIB( const Size& rSize, sal_uInt16 nBits, const BitmapPalette& rPal ) 749 { 750 DBG_ASSERT( nBits == 1 || nBits == 4 || nBits == 8 || nBits == 16 || nBits == 24, "Unsupported BitCount!" ); 751 752 HGLOBAL hDIB = 0; 753 754 if( rSize.Width() <= 0 || rSize.Height() <= 0 ) 755 return hDIB; 756 757 // calculate bitmap size in Bytes 758 const sal_uLong nAlignedWidth4Bytes = AlignedWidth4Bytes( nBits * rSize.Width() ); 759 const sal_uLong nImageSize = nAlignedWidth4Bytes * rSize.Height(); 760 bool bOverflow = (nImageSize / nAlignedWidth4Bytes) != rSize.Height(); 761 if( bOverflow ) 762 return hDIB; 763 764 // allocate bitmap memory including header and palette 765 const sal_uInt16 nColors = (nBits <= 8) ? (1 << nBits) : 0; 766 const sal_uLong nHeaderSize = sizeof( BITMAPINFOHEADER ) + nColors * sizeof( RGBQUAD ); 767 bOverflow = (nHeaderSize + nImageSize) < nImageSize; 768 if( bOverflow ) 769 return hDIB; 770 771 hDIB = GlobalAlloc( GHND, nHeaderSize + nImageSize ); 772 if( !hDIB ) 773 return hDIB; 774 775 PBITMAPINFO pBI = static_cast<PBITMAPINFO>( GlobalLock( hDIB ) ); 776 PBITMAPINFOHEADER pBIH = reinterpret_cast<PBITMAPINFOHEADER>( pBI ); 777 778 pBIH->biSize = sizeof( BITMAPINFOHEADER ); 779 pBIH->biWidth = rSize.Width(); 780 pBIH->biHeight = rSize.Height(); 781 pBIH->biPlanes = 1; 782 pBIH->biBitCount = nBits; 783 pBIH->biCompression = BI_RGB; 784 pBIH->biSizeImage = nImageSize; 785 pBIH->biXPelsPerMeter = 0; 786 pBIH->biYPelsPerMeter = 0; 787 pBIH->biClrUsed = 0; 788 pBIH->biClrImportant = 0; 789 790 if( nColors ) 791 { 792 // copy the palette entries if any 793 const sal_uInt16 nMinCount = Min( nColors, rPal.GetEntryCount() ); 794 if( nMinCount ) 795 memcpy( pBI->bmiColors, rPal.ImplGetColorBuffer(), nMinCount * sizeof(RGBQUAD) ); 796 } 797 798 GlobalUnlock( hDIB ); 799 800 return hDIB; 801 } 802 803 // ------------------------------------------------------------------ 804 805 HANDLE WinSalBitmap::ImplCopyDIBOrDDB( HANDLE hHdl, bool bDIB ) 806 { 807 HANDLE hCopy = 0; 808 809 if ( bDIB && hHdl ) 810 { 811 const sal_uLong nSize = GlobalSize( hHdl ); 812 813 if ( (hCopy = GlobalAlloc( GHND, nSize )) != 0 ) 814 { 815 memcpy( (LPSTR) GlobalLock( hCopy ), (LPSTR) GlobalLock( hHdl ), nSize ); 816 817 GlobalUnlock( hCopy ); 818 GlobalUnlock( hHdl ); 819 } 820 } 821 else if ( hHdl ) 822 { 823 BITMAP aBmp; 824 825 // Source-Bitmap nach Groesse befragen 826 WIN_GetObject( hHdl, sizeof( BITMAP ), (LPSTR) &aBmp ); 827 828 // Destination-Bitmap erzeugen 829 if ( (hCopy = CreateBitmapIndirect( &aBmp )) != 0 ) 830 { 831 HDC hBmpDC = CreateCompatibleDC( 0 ); 832 HBITMAP hBmpOld = (HBITMAP) SelectObject( hBmpDC, hHdl ); 833 HDC hCopyDC = CreateCompatibleDC( hBmpDC ); 834 HBITMAP hCopyOld = (HBITMAP) SelectObject( hCopyDC, hCopy ); 835 836 BitBlt( hCopyDC, 0, 0, aBmp.bmWidth, aBmp.bmHeight, hBmpDC, 0, 0, SRCCOPY ); 837 838 SelectObject( hCopyDC, hCopyOld ); 839 DeleteDC( hCopyDC ); 840 841 SelectObject( hBmpDC, hBmpOld ); 842 DeleteDC( hBmpDC ); 843 } 844 } 845 846 return hCopy; 847 } 848 849 // ------------------------------------------------------------------ 850 851 BitmapBuffer* WinSalBitmap::AcquireBuffer( bool /*bReadOnly*/ ) 852 { 853 BitmapBuffer* pBuffer = NULL; 854 855 if( mhDIB ) 856 { 857 PBITMAPINFO pBI = (PBITMAPINFO) GlobalLock( mhDIB ); 858 PBITMAPINFOHEADER pBIH = (PBITMAPINFOHEADER) pBI; 859 860 if( ( pBIH->biCompression == BI_RLE4 ) || ( pBIH->biCompression == BI_RLE8 ) ) 861 { 862 Size aSizePix( pBIH->biWidth, pBIH->biHeight ); 863 HGLOBAL hNewDIB = ImplCreateDIB( aSizePix, pBIH->biBitCount, BitmapPalette() ); 864 865 if( hNewDIB ) 866 { 867 PBITMAPINFO pNewBI = (PBITMAPINFO) GlobalLock( hNewDIB ); 868 PBITMAPINFOHEADER pNewBIH = (PBITMAPINFOHEADER) pNewBI; 869 const sal_uInt16 nColorCount = ImplGetDIBColorCount( hNewDIB ); 870 const sal_uLong nOffset = *(DWORD*) pBI + nColorCount * sizeof( RGBQUAD ); 871 BYTE* pOldBits = (PBYTE) pBI + nOffset; 872 BYTE* pNewBits = (PBYTE) pNewBI + nOffset; 873 874 memcpy( pNewBI, pBI, nOffset ); 875 pNewBIH->biCompression = 0; 876 ImplDecodeRLEBuffer( pOldBits, pNewBits, aSizePix, pBIH->biCompression == BI_RLE4 ); 877 878 GlobalUnlock( mhDIB ); 879 GlobalFree( mhDIB ); 880 mhDIB = hNewDIB; 881 pBI = pNewBI; 882 pBIH = pNewBIH; 883 } 884 } 885 886 if( pBIH->biPlanes == 1 ) 887 { 888 pBuffer = new BitmapBuffer; 889 890 pBuffer->mnFormat = BMP_FORMAT_BOTTOM_UP | 891 ( pBIH->biBitCount == 1 ? BMP_FORMAT_1BIT_MSB_PAL : 892 pBIH->biBitCount == 4 ? BMP_FORMAT_4BIT_MSN_PAL : 893 pBIH->biBitCount == 8 ? BMP_FORMAT_8BIT_PAL : 894 pBIH->biBitCount == 16 ? BMP_FORMAT_16BIT_TC_LSB_MASK : 895 pBIH->biBitCount == 24 ? BMP_FORMAT_24BIT_TC_BGR : 896 pBIH->biBitCount == 32 ? BMP_FORMAT_32BIT_TC_MASK : 0UL ); 897 898 if( BMP_SCANLINE_FORMAT( pBuffer->mnFormat ) ) 899 { 900 pBuffer->mnWidth = maSize.Width(); 901 pBuffer->mnHeight = maSize.Height(); 902 pBuffer->mnScanlineSize = AlignedWidth4Bytes( maSize.Width() * pBIH->biBitCount ); 903 pBuffer->mnBitCount = (sal_uInt16) pBIH->biBitCount; 904 905 if( pBuffer->mnBitCount <= 8 ) 906 { 907 const sal_uInt16 nPalCount = ImplGetDIBColorCount( mhDIB ); 908 909 pBuffer->maPalette.SetEntryCount( nPalCount ); 910 memcpy( pBuffer->maPalette.ImplGetColorBuffer(), pBI->bmiColors, nPalCount * sizeof( RGBQUAD ) ); 911 pBuffer->mpBits = (PBYTE) pBI + *(DWORD*) pBI + nPalCount * sizeof( RGBQUAD ); 912 } 913 else if( ( pBIH->biBitCount == 16 ) || ( pBIH->biBitCount == 32 ) ) 914 { 915 sal_uLong nOffset = 0UL; 916 917 if( pBIH->biCompression == BI_BITFIELDS ) 918 { 919 nOffset = 3 * sizeof( RGBQUAD ); 920 pBuffer->maColorMask = ColorMask( *(UINT32*) &pBI->bmiColors[ 0 ], 921 *(UINT32*) &pBI->bmiColors[ 1 ], 922 *(UINT32*) &pBI->bmiColors[ 2 ] ); 923 } 924 else if( pBIH->biBitCount == 16 ) 925 pBuffer->maColorMask = ColorMask( 0x00007c00UL, 0x000003e0UL, 0x0000001fUL ); 926 else 927 pBuffer->maColorMask = ColorMask( 0x00ff0000UL, 0x0000ff00UL, 0x000000ffUL ); 928 929 pBuffer->mpBits = (PBYTE) pBI + *(DWORD*) pBI + nOffset; 930 } 931 else 932 pBuffer->mpBits = (PBYTE) pBI + *(DWORD*) pBI; 933 } 934 else 935 { 936 GlobalUnlock( mhDIB ); 937 delete pBuffer; 938 pBuffer = NULL; 939 } 940 } 941 else 942 GlobalUnlock( mhDIB ); 943 } 944 945 return pBuffer; 946 } 947 948 // ------------------------------------------------------------------ 949 950 void WinSalBitmap::ReleaseBuffer( BitmapBuffer* pBuffer, bool bReadOnly ) 951 { 952 if( pBuffer ) 953 { 954 if( mhDIB ) 955 { 956 if( !bReadOnly && !!pBuffer->maPalette ) 957 { 958 PBITMAPINFO pBI = (PBITMAPINFO) GlobalLock( mhDIB ); 959 const sal_uInt16 nCount = pBuffer->maPalette.GetEntryCount(); 960 const sal_uInt16 nDIBColorCount = ImplGetDIBColorCount( mhDIB ); 961 memcpy( pBI->bmiColors, pBuffer->maPalette.ImplGetColorBuffer(), Min( nDIBColorCount, nCount ) * sizeof( RGBQUAD ) ); 962 GlobalUnlock( mhDIB ); 963 } 964 965 GlobalUnlock( mhDIB ); 966 } 967 968 delete pBuffer; 969 } 970 } 971 972 // ------------------------------------------------------------------ 973 974 void WinSalBitmap::ImplDecodeRLEBuffer( const BYTE* pSrcBuf, BYTE* pDstBuf, 975 const Size& rSizePixel, bool bRLE4 ) 976 { 977 HPBYTE pRLE = (HPBYTE) pSrcBuf; 978 HPBYTE pDIB = (HPBYTE) pDstBuf; 979 HPBYTE pRow = (HPBYTE) pDstBuf; 980 sal_uLong nWidthAl = AlignedWidth4Bytes( rSizePixel.Width() * ( bRLE4 ? 4UL : 8UL ) ); 981 HPBYTE pLast = pDIB + rSizePixel.Height() * nWidthAl - 1; 982 sal_uLong nCountByte; 983 sal_uLong nRunByte; 984 sal_uLong nX = 0; 985 sal_uLong i; 986 BYTE cTmp; 987 bool bEndDecoding = FALSE; 988 989 if( pRLE && pDIB ) 990 { 991 do 992 { 993 if( ( nCountByte = *pRLE++ ) == 0 ) 994 { 995 nRunByte = *pRLE++; 996 997 if( nRunByte > 2UL ) 998 { 999 if( bRLE4 ) 1000 { 1001 nCountByte = nRunByte >> 1UL; 1002 1003 for( i = 0; i < nCountByte; i++ ) 1004 { 1005 cTmp = *pRLE++; 1006 ImplSetPixel4( pDIB, nX++, cTmp >> 4 ); 1007 ImplSetPixel4( pDIB, nX++, cTmp & 0x0f ); 1008 } 1009 1010 if( nRunByte & 1 ) 1011 ImplSetPixel4( pDIB, nX++, *pRLE++ >> 4 ); 1012 1013 if( ( ( nRunByte + 1 ) >> 1 ) & 1 ) 1014 pRLE++; 1015 } 1016 else 1017 { 1018 memcpy( &pDIB[ nX ], pRLE, nRunByte ); 1019 pRLE += nRunByte; 1020 nX += nRunByte; 1021 1022 if( nRunByte & 1 ) 1023 pRLE++; 1024 } 1025 } 1026 else if( !nRunByte ) 1027 { 1028 pDIB = ( pRow += nWidthAl ); 1029 nX = 0UL; 1030 } 1031 else if( nRunByte == 1 ) 1032 bEndDecoding = TRUE; 1033 else 1034 { 1035 nX += *pRLE++; 1036 pDIB = ( pRow += ( *pRLE++ ) * nWidthAl ); 1037 } 1038 } 1039 else 1040 { 1041 cTmp = *pRLE++; 1042 1043 if( bRLE4 ) 1044 { 1045 nRunByte = nCountByte >> 1; 1046 1047 for( i = 0; i < nRunByte; i++ ) 1048 { 1049 ImplSetPixel4( pDIB, nX++, cTmp >> 4 ); 1050 ImplSetPixel4( pDIB, nX++, cTmp & 0x0f ); 1051 } 1052 1053 if( nCountByte & 1 ) 1054 ImplSetPixel4( pDIB, nX++, cTmp >> 4 ); 1055 } 1056 else 1057 { 1058 for( i = 0; i < nCountByte; i++ ) 1059 pDIB[ nX++ ] = cTmp; 1060 } 1061 } 1062 } 1063 while( !bEndDecoding && ( pDIB <= pLast ) ); 1064 } 1065 } 1066 1067 bool WinSalBitmap::GetSystemData( BitmapSystemData& rData ) 1068 { 1069 bool bRet = false; 1070 if( mhDIB || mhDDB ) 1071 { 1072 bRet = true; 1073 rData.pDIB = mhDIB; 1074 rData.pDDB = mhDDB; 1075 const Size& rSize = GetSize (); 1076 rData.mnWidth = rSize.Width(); 1077 rData.mnHeight = rSize.Height(); 1078 } 1079 return bRet; 1080 } 1081