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 sal_uInt8* pSrcRGB(pRGB->mpBits); 314 const sal_uInt32 nExtraRGB(pRGB->mnScanlineSize - (nW * 3)); 315 const bool bTopDown(pRGB->mnFormat & BMP_FORMAT_TOP_DOWN); 316 317 for(sal_uInt32 y(0); y < nH; y++) 318 { 319 const sal_uInt32 nYInsert(bTopDown ? y : nH - y - 1); 320 321 for(sal_uInt32 x(0); x < nW; x++) 322 { 323 const sal_uInt8 nB(*pSrcRGB++); 324 const sal_uInt8 nG(*pSrcRGB++); 325 const sal_uInt8 nR(*pSrcRGB++); 326 327 pRetval->SetPixel(x, nYInsert, Gdiplus::Color(nR, nG, nB)); 328 } 329 330 pSrcRGB += nExtraRGB; 331 } 332 } 333 } 334 335 if(pExtraRGB) 336 { 337 delete pExtraRGB; 338 } 339 else 340 { 341 pSalRGB->ReleaseBuffer(pRGB, true); 342 } 343 344 if(pExtraWinSalRGB) 345 { 346 delete pExtraWinSalRGB; 347 } 348 349 return pRetval; 350 } 351 352 // ------------------------------------------------------------------ 353 354 Gdiplus::Bitmap* WinSalBitmap::ImplCreateGdiPlusBitmap(const WinSalBitmap& rAlphaSource) 355 { 356 Gdiplus::Bitmap* pRetval(0); 357 WinSalBitmap* pSalRGB = const_cast< WinSalBitmap* >(this); 358 WinSalBitmap* pExtraWinSalRGB = 0; 359 360 if(!pSalRGB->ImplGethDIB()) 361 { 362 // we need DIB for success with AcquireBuffer, create a replacement WinSalBitmap 363 pExtraWinSalRGB = new WinSalBitmap(); 364 pExtraWinSalRGB->Create(*pSalRGB, pSalRGB->GetBitCount()); 365 pSalRGB = pExtraWinSalRGB; 366 } 367 368 BitmapBuffer* pRGB = pSalRGB->AcquireBuffer(true); 369 BitmapBuffer* pExtraRGB = 0; 370 371 if(pRGB && BMP_FORMAT_24BIT_TC_BGR != (pRGB->mnFormat & ~BMP_FORMAT_TOP_DOWN)) 372 { 373 // convert source bitmap to BMP_FORMAT_24BIT_TC_BGR format if not yet in that format 374 SalTwoRect aSalTwoRect; 375 376 aSalTwoRect.mnSrcX = aSalTwoRect.mnSrcY = aSalTwoRect.mnDestX = aSalTwoRect.mnDestY = 0; 377 aSalTwoRect.mnSrcWidth = aSalTwoRect.mnDestWidth = pRGB->mnWidth; 378 aSalTwoRect.mnSrcHeight = aSalTwoRect.mnDestHeight = pRGB->mnHeight; 379 380 pExtraRGB = StretchAndConvert( 381 *pRGB, 382 aSalTwoRect, 383 BMP_FORMAT_24BIT_TC_BGR, 384 0); 385 386 pSalRGB->ReleaseBuffer(pRGB, true); 387 pRGB = pExtraRGB; 388 } 389 390 WinSalBitmap* pSalA = const_cast< WinSalBitmap* >(&rAlphaSource); 391 WinSalBitmap* pExtraWinSalA = 0; 392 393 if(!pSalA->ImplGethDIB()) 394 { 395 // we need DIB for success with AcquireBuffer, create a replacement WinSalBitmap 396 pExtraWinSalA = new WinSalBitmap(); 397 pExtraWinSalA->Create(*pSalA, pSalA->GetBitCount()); 398 pSalA = pExtraWinSalA; 399 } 400 401 BitmapBuffer* pA = pSalA->AcquireBuffer(true); 402 BitmapBuffer* pExtraA = 0; 403 404 if(pA && BMP_FORMAT_8BIT_PAL != (pA->mnFormat & ~BMP_FORMAT_TOP_DOWN)) 405 { 406 // convert alpha bitmap to BMP_FORMAT_8BIT_PAL format if not yet in that format 407 SalTwoRect aSalTwoRect; 408 409 aSalTwoRect.mnSrcX = aSalTwoRect.mnSrcY = aSalTwoRect.mnDestX = aSalTwoRect.mnDestY = 0; 410 aSalTwoRect.mnSrcWidth = aSalTwoRect.mnDestWidth = pA->mnWidth; 411 aSalTwoRect.mnSrcHeight = aSalTwoRect.mnDestHeight = pA->mnHeight; 412 const BitmapPalette& rTargetPalette = Bitmap::GetGreyPalette(256); 413 414 pExtraA = StretchAndConvert( 415 *pA, 416 aSalTwoRect, 417 BMP_FORMAT_8BIT_PAL, 418 &rTargetPalette); 419 420 pSalA->ReleaseBuffer(pA, true); 421 pA = pExtraA; 422 } 423 424 if(pRGB 425 && pA 426 && pRGB->mnWidth > 0 427 && pRGB->mnHeight > 0 428 && pRGB->mnWidth == pA->mnWidth 429 && pRGB->mnHeight == pA->mnHeight 430 && BMP_FORMAT_24BIT_TC_BGR == (pRGB->mnFormat & ~BMP_FORMAT_TOP_DOWN) 431 && BMP_FORMAT_8BIT_PAL == (pA->mnFormat & ~BMP_FORMAT_TOP_DOWN)) 432 { 433 // we have alpha and bitmap in known formats, create GdiPlus Bitmap as 32bit ARGB 434 const sal_uInt32 nW(pRGB->mnWidth); 435 const sal_uInt32 nH(pRGB->mnHeight); 436 437 pRetval = new Gdiplus::Bitmap(nW, nH, PixelFormat32bppARGB); 438 439 if(pRetval) 440 { 441 sal_uInt8* pSrcRGB(pRGB->mpBits); 442 sal_uInt8* pSrcA(pA->mpBits); 443 const sal_uInt32 nExtraRGB(pRGB->mnScanlineSize - (nW * 3)); 444 const sal_uInt32 nExtraA(pA->mnScanlineSize - nW); 445 const bool bTopDown(pRGB->mnFormat & BMP_FORMAT_TOP_DOWN); 446 447 for(sal_uInt32 y(0); y < nH; y++) 448 { 449 const sal_uInt32 nYInsert(bTopDown ? y : nH - y - 1); 450 451 for(sal_uInt32 x(0); x < nW; x++) 452 { 453 const sal_uInt8 nB(*pSrcRGB++); 454 const sal_uInt8 nG(*pSrcRGB++); 455 const sal_uInt8 nR(*pSrcRGB++); 456 const sal_uInt8 nA(0xff - *pSrcA++); 457 458 pRetval->SetPixel(x, nYInsert, Gdiplus::Color(nA, nR, nG, nB)); 459 } 460 461 pSrcRGB += nExtraRGB; 462 pSrcA += nExtraA; 463 } 464 } 465 } 466 467 if(pExtraA) 468 { 469 delete pExtraA; 470 } 471 else 472 { 473 pSalA->ReleaseBuffer(pA, true); 474 } 475 476 if(pExtraWinSalA) 477 { 478 delete pExtraWinSalA; 479 } 480 481 if(pExtraRGB) 482 { 483 delete pExtraRGB; 484 } 485 else 486 { 487 pSalRGB->ReleaseBuffer(pRGB, true); 488 } 489 490 if(pExtraWinSalRGB) 491 { 492 delete pExtraWinSalRGB; 493 } 494 495 return pRetval; 496 } 497 498 // ------------------------------------------------------------------ 499 500 bool WinSalBitmap::Create( HANDLE hBitmap, bool bDIB, bool bCopyHandle ) 501 { 502 bool bRet = TRUE; 503 504 if( bDIB ) 505 mhDIB = (HGLOBAL) ( bCopyHandle ? ImplCopyDIBOrDDB( hBitmap, TRUE ) : hBitmap ); 506 else 507 mhDDB = (HBITMAP) ( bCopyHandle ? ImplCopyDIBOrDDB( hBitmap, FALSE ) : hBitmap ); 508 509 if( mhDIB ) 510 { 511 PBITMAPINFOHEADER pBIH = (PBITMAPINFOHEADER) GlobalLock( mhDIB ); 512 513 maSize = Size( pBIH->biWidth, pBIH->biHeight ); 514 mnBitCount = pBIH->biBitCount; 515 516 if( mnBitCount ) 517 mnBitCount = ( mnBitCount <= 1 ) ? 1 : ( mnBitCount <= 4 ) ? 4 : ( mnBitCount <= 8 ) ? 8 : 24; 518 519 GlobalUnlock( mhDIB ); 520 } 521 else if( mhDDB ) 522 { 523 BITMAP aDDBInfo; 524 525 if( WIN_GetObject( mhDDB, sizeof( BITMAP ), &aDDBInfo ) ) 526 { 527 maSize = Size( aDDBInfo.bmWidth, aDDBInfo.bmHeight ); 528 mnBitCount = aDDBInfo.bmPlanes * aDDBInfo.bmBitsPixel; 529 530 if( mnBitCount ) 531 { 532 mnBitCount = ( mnBitCount <= 1 ) ? 1 : 533 ( mnBitCount <= 4 ) ? 4 : 534 ( mnBitCount <= 8 ) ? 8 : 24; 535 } 536 } 537 else 538 { 539 mhDDB = 0; 540 bRet = FALSE; 541 } 542 } 543 else 544 bRet = FALSE; 545 546 return bRet; 547 } 548 549 // ------------------------------------------------------------------ 550 551 bool WinSalBitmap::Create( const Size& rSize, sal_uInt16 nBitCount, const BitmapPalette& rPal ) 552 { 553 bool bRet = FALSE; 554 555 mhDIB = ImplCreateDIB( rSize, nBitCount, rPal ); 556 557 if( mhDIB ) 558 { 559 maSize = rSize; 560 mnBitCount = nBitCount; 561 bRet = TRUE; 562 } 563 564 return bRet; 565 } 566 567 // ------------------------------------------------------------------ 568 569 bool WinSalBitmap::Create( const SalBitmap& rSSalBitmap ) 570 { 571 bool bRet = FALSE; 572 const WinSalBitmap& rSalBitmap = static_cast<const WinSalBitmap&>(rSSalBitmap); 573 574 if ( rSalBitmap.mhDIB || rSalBitmap.mhDDB ) 575 { 576 HANDLE hNewHdl = ImplCopyDIBOrDDB( rSalBitmap.mhDIB ? rSalBitmap.mhDIB : rSalBitmap.mhDDB, 577 rSalBitmap.mhDIB != 0 ); 578 579 if ( hNewHdl ) 580 { 581 if( rSalBitmap.mhDIB ) 582 mhDIB = (HGLOBAL) hNewHdl; 583 else if( rSalBitmap.mhDDB ) 584 mhDDB = (HBITMAP) hNewHdl; 585 586 maSize = rSalBitmap.maSize; 587 mnBitCount = rSalBitmap.mnBitCount; 588 589 bRet = TRUE; 590 } 591 } 592 593 return bRet; 594 } 595 596 // ------------------------------------------------------------------ 597 598 bool WinSalBitmap::Create( const SalBitmap& rSSalBmp, SalGraphics* pSGraphics ) 599 { 600 bool bRet = FALSE; 601 602 const WinSalBitmap& rSalBmp = static_cast<const WinSalBitmap&>(rSSalBmp); 603 WinSalGraphics* pGraphics = static_cast<WinSalGraphics*>(pSGraphics); 604 605 if( rSalBmp.mhDIB ) 606 { 607 PBITMAPINFO pBI = (PBITMAPINFO) GlobalLock( rSalBmp.mhDIB ); 608 PBITMAPINFOHEADER pBIH = (PBITMAPINFOHEADER) pBI; 609 HDC hDC = pGraphics->getHDC(); 610 HBITMAP hNewDDB; 611 BITMAP aDDBInfo; 612 PBYTE pBits = (PBYTE) pBI + *(DWORD*) pBI + 613 ImplGetDIBColorCount( rSalBmp.mhDIB ) * sizeof( RGBQUAD ); 614 615 if( pBIH->biBitCount == 1 ) 616 { 617 hNewDDB = CreateBitmap( pBIH->biWidth, pBIH->biHeight, 1, 1, NULL ); 618 619 if( hNewDDB ) 620 SetDIBits( hDC, hNewDDB, 0, pBIH->biHeight, pBits, pBI, DIB_RGB_COLORS ); 621 } 622 else 623 hNewDDB = CreateDIBitmap( hDC, (PBITMAPINFOHEADER) pBI, CBM_INIT, pBits, pBI, DIB_RGB_COLORS ); 624 625 GlobalUnlock( rSalBmp.mhDIB ); 626 627 if( hNewDDB && WIN_GetObject( hNewDDB, sizeof( BITMAP ), &aDDBInfo ) ) 628 { 629 mhDDB = hNewDDB; 630 maSize = Size( aDDBInfo.bmWidth, aDDBInfo.bmHeight ); 631 mnBitCount = aDDBInfo.bmPlanes * aDDBInfo.bmBitsPixel; 632 633 bRet = TRUE; 634 } 635 else if( hNewDDB ) 636 DeleteObject( hNewDDB ); 637 } 638 639 return bRet; 640 } 641 642 // ------------------------------------------------------------------ 643 644 bool WinSalBitmap::Create( const SalBitmap& rSSalBmp, sal_uInt16 nNewBitCount ) 645 { 646 bool bRet = FALSE; 647 648 const WinSalBitmap& rSalBmp = static_cast<const WinSalBitmap&>(rSSalBmp); 649 650 if( rSalBmp.mhDDB ) 651 { 652 mhDIB = ImplCreateDIB( rSalBmp.maSize, nNewBitCount, BitmapPalette() ); 653 654 if( mhDIB ) 655 { 656 PBITMAPINFO pBI = (PBITMAPINFO) GlobalLock( mhDIB ); 657 const int nLines = (int) rSalBmp.maSize.Height(); 658 HDC hDC = GetDC( 0 ); 659 PBYTE pBits = (PBYTE) pBI + *(DWORD*) pBI + 660 ImplGetDIBColorCount( mhDIB ) * sizeof( RGBQUAD ); 661 SalData* pSalData = GetSalData(); 662 HPALETTE hOldPal = 0; 663 664 if ( pSalData->mhDitherPal ) 665 { 666 hOldPal = SelectPalette( hDC, pSalData->mhDitherPal, TRUE ); 667 RealizePalette( hDC ); 668 } 669 670 if( GetDIBits( hDC, rSalBmp.mhDDB, 0, nLines, pBits, pBI, DIB_RGB_COLORS ) == nLines ) 671 { 672 GlobalUnlock( mhDIB ); 673 maSize = rSalBmp.maSize; 674 mnBitCount = nNewBitCount; 675 bRet = TRUE; 676 } 677 else 678 { 679 GlobalUnlock( mhDIB ); 680 GlobalFree( mhDIB ); 681 mhDIB = 0; 682 } 683 684 if( hOldPal ) 685 SelectPalette( hDC, hOldPal, TRUE ); 686 687 ReleaseDC( 0, hDC ); 688 } 689 } 690 691 return bRet; 692 } 693 694 // ------------------------------------------------------------------ 695 696 sal_uInt16 WinSalBitmap::ImplGetDIBColorCount( HGLOBAL hDIB ) 697 { 698 sal_uInt16 nColors = 0; 699 700 if( hDIB ) 701 { 702 PBITMAPINFO pBI = (PBITMAPINFO) GlobalLock( hDIB ); 703 PBITMAPINFOHEADER pBIH = (PBITMAPINFOHEADER) pBI; 704 705 if ( pBIH->biSize != sizeof( BITMAPCOREHEADER ) ) 706 { 707 if( pBIH->biBitCount <= 8 ) 708 { 709 if ( pBIH->biClrUsed ) 710 nColors = (sal_uInt16) pBIH->biClrUsed; 711 else 712 nColors = 1 << pBIH->biBitCount; 713 } 714 } 715 else if( ( (PBITMAPCOREHEADER) pBI )->bcBitCount <= 8 ) 716 nColors = 1 << ( (PBITMAPCOREHEADER) pBI )->bcBitCount; 717 718 GlobalUnlock( hDIB ); 719 } 720 721 return nColors; 722 } 723 724 // ------------------------------------------------------------------ 725 726 HGLOBAL WinSalBitmap::ImplCreateDIB( const Size& rSize, sal_uInt16 nBits, const BitmapPalette& rPal ) 727 { 728 DBG_ASSERT( nBits == 1 || nBits == 4 || nBits == 8 || nBits == 16 || nBits == 24, "Unsupported BitCount!" ); 729 730 HGLOBAL hDIB = 0; 731 732 if( rSize.Width() <= 0 || rSize.Height() <= 0 ) 733 return hDIB; 734 735 // calculate bitmap size in Bytes 736 const sal_uLong nAlignedWidth4Bytes = AlignedWidth4Bytes( nBits * rSize.Width() ); 737 const sal_uLong nImageSize = nAlignedWidth4Bytes * rSize.Height(); 738 bool bOverflow = (nImageSize / nAlignedWidth4Bytes) != rSize.Height(); 739 if( bOverflow ) 740 return hDIB; 741 742 // allocate bitmap memory including header and palette 743 const sal_uInt16 nColors = (nBits <= 8) ? (1 << nBits) : 0; 744 const sal_uLong nHeaderSize = sizeof( BITMAPINFOHEADER ) + nColors * sizeof( RGBQUAD ); 745 bOverflow = (nHeaderSize + nImageSize) < nImageSize; 746 if( bOverflow ) 747 return hDIB; 748 749 hDIB = GlobalAlloc( GHND, nHeaderSize + nImageSize ); 750 if( !hDIB ) 751 return hDIB; 752 753 PBITMAPINFO pBI = static_cast<PBITMAPINFO>( GlobalLock( hDIB ) ); 754 PBITMAPINFOHEADER pBIH = reinterpret_cast<PBITMAPINFOHEADER>( pBI ); 755 756 pBIH->biSize = sizeof( BITMAPINFOHEADER ); 757 pBIH->biWidth = rSize.Width(); 758 pBIH->biHeight = rSize.Height(); 759 pBIH->biPlanes = 1; 760 pBIH->biBitCount = nBits; 761 pBIH->biCompression = BI_RGB; 762 pBIH->biSizeImage = nImageSize; 763 pBIH->biXPelsPerMeter = 0; 764 pBIH->biYPelsPerMeter = 0; 765 pBIH->biClrUsed = 0; 766 pBIH->biClrImportant = 0; 767 768 if( nColors ) 769 { 770 // copy the palette entries if any 771 const sal_uInt16 nMinCount = Min( nColors, rPal.GetEntryCount() ); 772 if( nMinCount ) 773 memcpy( pBI->bmiColors, rPal.ImplGetColorBuffer(), nMinCount * sizeof(RGBQUAD) ); 774 } 775 776 GlobalUnlock( hDIB ); 777 778 return hDIB; 779 } 780 781 // ------------------------------------------------------------------ 782 783 HANDLE WinSalBitmap::ImplCopyDIBOrDDB( HANDLE hHdl, bool bDIB ) 784 { 785 HANDLE hCopy = 0; 786 787 if ( bDIB && hHdl ) 788 { 789 const sal_uLong nSize = GlobalSize( hHdl ); 790 791 if ( (hCopy = GlobalAlloc( GHND, nSize )) != 0 ) 792 { 793 memcpy( (LPSTR) GlobalLock( hCopy ), (LPSTR) GlobalLock( hHdl ), nSize ); 794 795 GlobalUnlock( hCopy ); 796 GlobalUnlock( hHdl ); 797 } 798 } 799 else if ( hHdl ) 800 { 801 BITMAP aBmp; 802 803 // Source-Bitmap nach Groesse befragen 804 WIN_GetObject( hHdl, sizeof( BITMAP ), (LPSTR) &aBmp ); 805 806 // Destination-Bitmap erzeugen 807 if ( (hCopy = CreateBitmapIndirect( &aBmp )) != 0 ) 808 { 809 HDC hBmpDC = CreateCompatibleDC( 0 ); 810 HBITMAP hBmpOld = (HBITMAP) SelectObject( hBmpDC, hHdl ); 811 HDC hCopyDC = CreateCompatibleDC( hBmpDC ); 812 HBITMAP hCopyOld = (HBITMAP) SelectObject( hCopyDC, hCopy ); 813 814 BitBlt( hCopyDC, 0, 0, aBmp.bmWidth, aBmp.bmHeight, hBmpDC, 0, 0, SRCCOPY ); 815 816 SelectObject( hCopyDC, hCopyOld ); 817 DeleteDC( hCopyDC ); 818 819 SelectObject( hBmpDC, hBmpOld ); 820 DeleteDC( hBmpDC ); 821 } 822 } 823 824 return hCopy; 825 } 826 827 // ------------------------------------------------------------------ 828 829 BitmapBuffer* WinSalBitmap::AcquireBuffer( bool /*bReadOnly*/ ) 830 { 831 BitmapBuffer* pBuffer = NULL; 832 833 if( mhDIB ) 834 { 835 PBITMAPINFO pBI = (PBITMAPINFO) GlobalLock( mhDIB ); 836 PBITMAPINFOHEADER pBIH = (PBITMAPINFOHEADER) pBI; 837 838 if( ( pBIH->biCompression == BI_RLE4 ) || ( pBIH->biCompression == BI_RLE8 ) ) 839 { 840 Size aSizePix( pBIH->biWidth, pBIH->biHeight ); 841 HGLOBAL hNewDIB = ImplCreateDIB( aSizePix, pBIH->biBitCount, BitmapPalette() ); 842 843 if( hNewDIB ) 844 { 845 PBITMAPINFO pNewBI = (PBITMAPINFO) GlobalLock( hNewDIB ); 846 PBITMAPINFOHEADER pNewBIH = (PBITMAPINFOHEADER) pNewBI; 847 const sal_uInt16 nColorCount = ImplGetDIBColorCount( hNewDIB ); 848 const sal_uLong nOffset = *(DWORD*) pBI + nColorCount * sizeof( RGBQUAD ); 849 BYTE* pOldBits = (PBYTE) pBI + nOffset; 850 BYTE* pNewBits = (PBYTE) pNewBI + nOffset; 851 852 memcpy( pNewBI, pBI, nOffset ); 853 pNewBIH->biCompression = 0; 854 ImplDecodeRLEBuffer( pOldBits, pNewBits, aSizePix, pBIH->biCompression == BI_RLE4 ); 855 856 GlobalUnlock( mhDIB ); 857 GlobalFree( mhDIB ); 858 mhDIB = hNewDIB; 859 pBI = pNewBI; 860 pBIH = pNewBIH; 861 } 862 } 863 864 if( pBIH->biPlanes == 1 ) 865 { 866 pBuffer = new BitmapBuffer; 867 868 pBuffer->mnFormat = BMP_FORMAT_BOTTOM_UP | 869 ( pBIH->biBitCount == 1 ? BMP_FORMAT_1BIT_MSB_PAL : 870 pBIH->biBitCount == 4 ? BMP_FORMAT_4BIT_MSN_PAL : 871 pBIH->biBitCount == 8 ? BMP_FORMAT_8BIT_PAL : 872 pBIH->biBitCount == 16 ? BMP_FORMAT_16BIT_TC_LSB_MASK : 873 pBIH->biBitCount == 24 ? BMP_FORMAT_24BIT_TC_BGR : 874 pBIH->biBitCount == 32 ? BMP_FORMAT_32BIT_TC_MASK : 0UL ); 875 876 if( BMP_SCANLINE_FORMAT( pBuffer->mnFormat ) ) 877 { 878 pBuffer->mnWidth = maSize.Width(); 879 pBuffer->mnHeight = maSize.Height(); 880 pBuffer->mnScanlineSize = AlignedWidth4Bytes( maSize.Width() * pBIH->biBitCount ); 881 pBuffer->mnBitCount = (sal_uInt16) pBIH->biBitCount; 882 883 if( pBuffer->mnBitCount <= 8 ) 884 { 885 const sal_uInt16 nPalCount = ImplGetDIBColorCount( mhDIB ); 886 887 pBuffer->maPalette.SetEntryCount( nPalCount ); 888 memcpy( pBuffer->maPalette.ImplGetColorBuffer(), pBI->bmiColors, nPalCount * sizeof( RGBQUAD ) ); 889 pBuffer->mpBits = (PBYTE) pBI + *(DWORD*) pBI + nPalCount * sizeof( RGBQUAD ); 890 } 891 else if( ( pBIH->biBitCount == 16 ) || ( pBIH->biBitCount == 32 ) ) 892 { 893 sal_uLong nOffset = 0UL; 894 895 if( pBIH->biCompression == BI_BITFIELDS ) 896 { 897 nOffset = 3 * sizeof( RGBQUAD ); 898 pBuffer->maColorMask = ColorMask( *(UINT32*) &pBI->bmiColors[ 0 ], 899 *(UINT32*) &pBI->bmiColors[ 1 ], 900 *(UINT32*) &pBI->bmiColors[ 2 ] ); 901 } 902 else if( pBIH->biBitCount == 16 ) 903 pBuffer->maColorMask = ColorMask( 0x00007c00UL, 0x000003e0UL, 0x0000001fUL ); 904 else 905 pBuffer->maColorMask = ColorMask( 0x00ff0000UL, 0x0000ff00UL, 0x000000ffUL ); 906 907 pBuffer->mpBits = (PBYTE) pBI + *(DWORD*) pBI + nOffset; 908 } 909 else 910 pBuffer->mpBits = (PBYTE) pBI + *(DWORD*) pBI; 911 } 912 else 913 { 914 GlobalUnlock( mhDIB ); 915 delete pBuffer; 916 pBuffer = NULL; 917 } 918 } 919 else 920 GlobalUnlock( mhDIB ); 921 } 922 923 return pBuffer; 924 } 925 926 // ------------------------------------------------------------------ 927 928 void WinSalBitmap::ReleaseBuffer( BitmapBuffer* pBuffer, bool bReadOnly ) 929 { 930 if( pBuffer ) 931 { 932 if( mhDIB ) 933 { 934 if( !bReadOnly && !!pBuffer->maPalette ) 935 { 936 PBITMAPINFO pBI = (PBITMAPINFO) GlobalLock( mhDIB ); 937 const sal_uInt16 nCount = pBuffer->maPalette.GetEntryCount(); 938 const sal_uInt16 nDIBColorCount = ImplGetDIBColorCount( mhDIB ); 939 memcpy( pBI->bmiColors, pBuffer->maPalette.ImplGetColorBuffer(), Min( nDIBColorCount, nCount ) * sizeof( RGBQUAD ) ); 940 GlobalUnlock( mhDIB ); 941 } 942 943 GlobalUnlock( mhDIB ); 944 } 945 946 delete pBuffer; 947 } 948 } 949 950 // ------------------------------------------------------------------ 951 952 void WinSalBitmap::ImplDecodeRLEBuffer( const BYTE* pSrcBuf, BYTE* pDstBuf, 953 const Size& rSizePixel, bool bRLE4 ) 954 { 955 HPBYTE pRLE = (HPBYTE) pSrcBuf; 956 HPBYTE pDIB = (HPBYTE) pDstBuf; 957 HPBYTE pRow = (HPBYTE) pDstBuf; 958 sal_uLong nWidthAl = AlignedWidth4Bytes( rSizePixel.Width() * ( bRLE4 ? 4UL : 8UL ) ); 959 HPBYTE pLast = pDIB + rSizePixel.Height() * nWidthAl - 1; 960 sal_uLong nCountByte; 961 sal_uLong nRunByte; 962 sal_uLong nX = 0; 963 sal_uLong i; 964 BYTE cTmp; 965 bool bEndDecoding = FALSE; 966 967 if( pRLE && pDIB ) 968 { 969 do 970 { 971 if( ( nCountByte = *pRLE++ ) == 0 ) 972 { 973 nRunByte = *pRLE++; 974 975 if( nRunByte > 2UL ) 976 { 977 if( bRLE4 ) 978 { 979 nCountByte = nRunByte >> 1UL; 980 981 for( i = 0; i < nCountByte; i++ ) 982 { 983 cTmp = *pRLE++; 984 ImplSetPixel4( pDIB, nX++, cTmp >> 4 ); 985 ImplSetPixel4( pDIB, nX++, cTmp & 0x0f ); 986 } 987 988 if( nRunByte & 1 ) 989 ImplSetPixel4( pDIB, nX++, *pRLE++ >> 4 ); 990 991 if( ( ( nRunByte + 1 ) >> 1 ) & 1 ) 992 pRLE++; 993 } 994 else 995 { 996 memcpy( &pDIB[ nX ], pRLE, nRunByte ); 997 pRLE += nRunByte; 998 nX += nRunByte; 999 1000 if( nRunByte & 1 ) 1001 pRLE++; 1002 } 1003 } 1004 else if( !nRunByte ) 1005 { 1006 pDIB = ( pRow += nWidthAl ); 1007 nX = 0UL; 1008 } 1009 else if( nRunByte == 1 ) 1010 bEndDecoding = TRUE; 1011 else 1012 { 1013 nX += *pRLE++; 1014 pDIB = ( pRow += ( *pRLE++ ) * nWidthAl ); 1015 } 1016 } 1017 else 1018 { 1019 cTmp = *pRLE++; 1020 1021 if( bRLE4 ) 1022 { 1023 nRunByte = nCountByte >> 1; 1024 1025 for( i = 0; i < nRunByte; i++ ) 1026 { 1027 ImplSetPixel4( pDIB, nX++, cTmp >> 4 ); 1028 ImplSetPixel4( pDIB, nX++, cTmp & 0x0f ); 1029 } 1030 1031 if( nCountByte & 1 ) 1032 ImplSetPixel4( pDIB, nX++, cTmp >> 4 ); 1033 } 1034 else 1035 { 1036 for( i = 0; i < nCountByte; i++ ) 1037 pDIB[ nX++ ] = cTmp; 1038 } 1039 } 1040 } 1041 while( !bEndDecoding && ( pDIB <= pLast ) ); 1042 } 1043 } 1044 1045 bool WinSalBitmap::GetSystemData( BitmapSystemData& rData ) 1046 { 1047 bool bRet = false; 1048 if( mhDIB || mhDDB ) 1049 { 1050 bRet = true; 1051 rData.pDIB = mhDIB; 1052 rData.pDDB = mhDDB; 1053 const Size& rSize = GetSize (); 1054 rData.mnWidth = rSize.Width(); 1055 rData.mnHeight = rSize.Height(); 1056 } 1057 return bRet; 1058 } 1059