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 const Gdiplus::Rect aAllRect(0, 0, nW, nH); 317 Gdiplus::BitmapData aGdiPlusBitmapData; 318 pRetval->LockBits(&aAllRect, Gdiplus::ImageLockModeWrite, PixelFormat24bppRGB, &aGdiPlusBitmapData); 319 320 // copy data to Gdiplus::Bitmap; format is BGR here in both cases, so memcpy is possible 321 for(sal_uInt32 y(0); y < nH; y++) 322 { 323 const sal_uInt32 nYInsert(bTopDown ? y : nH - y - 1); 324 sal_uInt8* targetPixels = (sal_uInt8*)aGdiPlusBitmapData.Scan0 + (nYInsert * aGdiPlusBitmapData.Stride); 325 326 memcpy(targetPixels, pSrcRGB, nW * 3); 327 pSrcRGB += nW * 3 + nExtraRGB; 328 } 329 330 pRetval->UnlockBits(&aGdiPlusBitmapData); 331 } 332 } 333 334 if(pExtraRGB) 335 { 336 delete pExtraRGB; 337 } 338 else 339 { 340 pSalRGB->ReleaseBuffer(pRGB, true); 341 } 342 343 if(pExtraWinSalRGB) 344 { 345 delete pExtraWinSalRGB; 346 } 347 348 return pRetval; 349 } 350 351 // ------------------------------------------------------------------ 352 353 Gdiplus::Bitmap* WinSalBitmap::ImplCreateGdiPlusBitmap(const WinSalBitmap& rAlphaSource) 354 { 355 Gdiplus::Bitmap* pRetval(0); 356 WinSalBitmap* pSalRGB = const_cast< WinSalBitmap* >(this); 357 WinSalBitmap* pExtraWinSalRGB = 0; 358 359 if(!pSalRGB->ImplGethDIB()) 360 { 361 // we need DIB for success with AcquireBuffer, create a replacement WinSalBitmap 362 pExtraWinSalRGB = new WinSalBitmap(); 363 pExtraWinSalRGB->Create(*pSalRGB, pSalRGB->GetBitCount()); 364 pSalRGB = pExtraWinSalRGB; 365 } 366 367 BitmapBuffer* pRGB = pSalRGB->AcquireBuffer(true); 368 BitmapBuffer* pExtraRGB = 0; 369 370 if(pRGB && BMP_FORMAT_24BIT_TC_BGR != (pRGB->mnFormat & ~BMP_FORMAT_TOP_DOWN)) 371 { 372 // convert source bitmap to BMP_FORMAT_24BIT_TC_BGR format if not yet in that format 373 SalTwoRect aSalTwoRect; 374 375 aSalTwoRect.mnSrcX = aSalTwoRect.mnSrcY = aSalTwoRect.mnDestX = aSalTwoRect.mnDestY = 0; 376 aSalTwoRect.mnSrcWidth = aSalTwoRect.mnDestWidth = pRGB->mnWidth; 377 aSalTwoRect.mnSrcHeight = aSalTwoRect.mnDestHeight = pRGB->mnHeight; 378 379 pExtraRGB = StretchAndConvert( 380 *pRGB, 381 aSalTwoRect, 382 BMP_FORMAT_24BIT_TC_BGR, 383 0); 384 385 pSalRGB->ReleaseBuffer(pRGB, true); 386 pRGB = pExtraRGB; 387 } 388 389 WinSalBitmap* pSalA = const_cast< WinSalBitmap* >(&rAlphaSource); 390 WinSalBitmap* pExtraWinSalA = 0; 391 392 if(!pSalA->ImplGethDIB()) 393 { 394 // we need DIB for success with AcquireBuffer, create a replacement WinSalBitmap 395 pExtraWinSalA = new WinSalBitmap(); 396 pExtraWinSalA->Create(*pSalA, pSalA->GetBitCount()); 397 pSalA = pExtraWinSalA; 398 } 399 400 BitmapBuffer* pA = pSalA->AcquireBuffer(true); 401 BitmapBuffer* pExtraA = 0; 402 403 if(pA && BMP_FORMAT_8BIT_PAL != (pA->mnFormat & ~BMP_FORMAT_TOP_DOWN)) 404 { 405 // convert alpha bitmap to BMP_FORMAT_8BIT_PAL format if not yet in that format 406 SalTwoRect aSalTwoRect; 407 408 aSalTwoRect.mnSrcX = aSalTwoRect.mnSrcY = aSalTwoRect.mnDestX = aSalTwoRect.mnDestY = 0; 409 aSalTwoRect.mnSrcWidth = aSalTwoRect.mnDestWidth = pA->mnWidth; 410 aSalTwoRect.mnSrcHeight = aSalTwoRect.mnDestHeight = pA->mnHeight; 411 const BitmapPalette& rTargetPalette = Bitmap::GetGreyPalette(256); 412 413 pExtraA = StretchAndConvert( 414 *pA, 415 aSalTwoRect, 416 BMP_FORMAT_8BIT_PAL, 417 &rTargetPalette); 418 419 pSalA->ReleaseBuffer(pA, true); 420 pA = pExtraA; 421 } 422 423 if(pRGB 424 && pA 425 && pRGB->mnWidth > 0 426 && pRGB->mnHeight > 0 427 && pRGB->mnWidth == pA->mnWidth 428 && pRGB->mnHeight == pA->mnHeight 429 && BMP_FORMAT_24BIT_TC_BGR == (pRGB->mnFormat & ~BMP_FORMAT_TOP_DOWN) 430 && BMP_FORMAT_8BIT_PAL == (pA->mnFormat & ~BMP_FORMAT_TOP_DOWN)) 431 { 432 // we have alpha and bitmap in known formats, create GdiPlus Bitmap as 32bit ARGB 433 const sal_uInt32 nW(pRGB->mnWidth); 434 const sal_uInt32 nH(pRGB->mnHeight); 435 436 pRetval = new Gdiplus::Bitmap(nW, nH, PixelFormat32bppARGB); 437 438 if(pRetval) 439 { 440 sal_uInt8* pSrcRGB(pRGB->mpBits); 441 sal_uInt8* pSrcA(pA->mpBits); 442 const sal_uInt32 nExtraRGB(pRGB->mnScanlineSize - (nW * 3)); 443 const sal_uInt32 nExtraA(pA->mnScanlineSize - nW); 444 const bool bTopDown(pRGB->mnFormat & BMP_FORMAT_TOP_DOWN); 445 const Gdiplus::Rect aAllRect(0, 0, nW, nH); 446 Gdiplus::BitmapData aGdiPlusBitmapData; 447 pRetval->LockBits(&aAllRect, Gdiplus::ImageLockModeWrite, PixelFormat32bppARGB, &aGdiPlusBitmapData); 448 449 // copy data to Gdiplus::Bitmap; format is BGRA; need to mix BGR from Bitmap and 450 // A from alpha, so inner loop is needed (who invented BitmapEx..?) 451 for(sal_uInt32 y(0); y < nH; y++) 452 { 453 const sal_uInt32 nYInsert(bTopDown ? y : nH - y - 1); 454 sal_uInt8* targetPixels = (sal_uInt8*)aGdiPlusBitmapData.Scan0 + (nYInsert * aGdiPlusBitmapData.Stride); 455 456 for(sal_uInt32 x(0); x < nW; x++) 457 { 458 *targetPixels++ = *pSrcRGB++; 459 *targetPixels++ = *pSrcRGB++; 460 *targetPixels++ = *pSrcRGB++; 461 *targetPixels++ = 0xff - *pSrcA++; 462 } 463 464 pSrcRGB += nExtraRGB; 465 pSrcA += nExtraA; 466 } 467 468 pRetval->UnlockBits(&aGdiPlusBitmapData); 469 } 470 } 471 472 if(pExtraA) 473 { 474 delete pExtraA; 475 } 476 else 477 { 478 pSalA->ReleaseBuffer(pA, true); 479 } 480 481 if(pExtraWinSalA) 482 { 483 delete pExtraWinSalA; 484 } 485 486 if(pExtraRGB) 487 { 488 delete pExtraRGB; 489 } 490 else 491 { 492 pSalRGB->ReleaseBuffer(pRGB, true); 493 } 494 495 if(pExtraWinSalRGB) 496 { 497 delete pExtraWinSalRGB; 498 } 499 500 return pRetval; 501 } 502 503 // ------------------------------------------------------------------ 504 505 bool WinSalBitmap::Create( HANDLE hBitmap, bool bDIB, bool bCopyHandle ) 506 { 507 bool bRet = TRUE; 508 509 if( bDIB ) 510 mhDIB = (HGLOBAL) ( bCopyHandle ? ImplCopyDIBOrDDB( hBitmap, TRUE ) : hBitmap ); 511 else 512 mhDDB = (HBITMAP) ( bCopyHandle ? ImplCopyDIBOrDDB( hBitmap, FALSE ) : hBitmap ); 513 514 if( mhDIB ) 515 { 516 PBITMAPINFOHEADER pBIH = (PBITMAPINFOHEADER) GlobalLock( mhDIB ); 517 518 maSize = Size( pBIH->biWidth, pBIH->biHeight ); 519 mnBitCount = pBIH->biBitCount; 520 521 if( mnBitCount ) 522 mnBitCount = ( mnBitCount <= 1 ) ? 1 : ( mnBitCount <= 4 ) ? 4 : ( mnBitCount <= 8 ) ? 8 : 24; 523 524 GlobalUnlock( mhDIB ); 525 } 526 else if( mhDDB ) 527 { 528 BITMAP aDDBInfo; 529 530 if( WIN_GetObject( mhDDB, sizeof( BITMAP ), &aDDBInfo ) ) 531 { 532 maSize = Size( aDDBInfo.bmWidth, aDDBInfo.bmHeight ); 533 mnBitCount = aDDBInfo.bmPlanes * aDDBInfo.bmBitsPixel; 534 535 if( mnBitCount ) 536 { 537 mnBitCount = ( mnBitCount <= 1 ) ? 1 : 538 ( mnBitCount <= 4 ) ? 4 : 539 ( mnBitCount <= 8 ) ? 8 : 24; 540 } 541 } 542 else 543 { 544 mhDDB = 0; 545 bRet = FALSE; 546 } 547 } 548 else 549 bRet = FALSE; 550 551 return bRet; 552 } 553 554 // ------------------------------------------------------------------ 555 556 bool WinSalBitmap::Create( const Size& rSize, sal_uInt16 nBitCount, const BitmapPalette& rPal ) 557 { 558 bool bRet = FALSE; 559 560 mhDIB = ImplCreateDIB( rSize, nBitCount, rPal ); 561 562 if( mhDIB ) 563 { 564 maSize = rSize; 565 mnBitCount = nBitCount; 566 bRet = TRUE; 567 } 568 569 return bRet; 570 } 571 572 // ------------------------------------------------------------------ 573 574 bool WinSalBitmap::Create( const SalBitmap& rSSalBitmap ) 575 { 576 bool bRet = FALSE; 577 const WinSalBitmap& rSalBitmap = static_cast<const WinSalBitmap&>(rSSalBitmap); 578 579 if ( rSalBitmap.mhDIB || rSalBitmap.mhDDB ) 580 { 581 HANDLE hNewHdl = ImplCopyDIBOrDDB( rSalBitmap.mhDIB ? rSalBitmap.mhDIB : rSalBitmap.mhDDB, 582 rSalBitmap.mhDIB != 0 ); 583 584 if ( hNewHdl ) 585 { 586 if( rSalBitmap.mhDIB ) 587 mhDIB = (HGLOBAL) hNewHdl; 588 else if( rSalBitmap.mhDDB ) 589 mhDDB = (HBITMAP) hNewHdl; 590 591 maSize = rSalBitmap.maSize; 592 mnBitCount = rSalBitmap.mnBitCount; 593 594 bRet = TRUE; 595 } 596 } 597 598 return bRet; 599 } 600 601 // ------------------------------------------------------------------ 602 603 bool WinSalBitmap::Create( const SalBitmap& rSSalBmp, SalGraphics* pSGraphics ) 604 { 605 bool bRet = FALSE; 606 607 const WinSalBitmap& rSalBmp = static_cast<const WinSalBitmap&>(rSSalBmp); 608 WinSalGraphics* pGraphics = static_cast<WinSalGraphics*>(pSGraphics); 609 610 if( rSalBmp.mhDIB ) 611 { 612 PBITMAPINFO pBI = (PBITMAPINFO) GlobalLock( rSalBmp.mhDIB ); 613 PBITMAPINFOHEADER pBIH = (PBITMAPINFOHEADER) pBI; 614 HDC hDC = pGraphics->getHDC(); 615 HBITMAP hNewDDB; 616 BITMAP aDDBInfo; 617 PBYTE pBits = (PBYTE) pBI + *(DWORD*) pBI + 618 ImplGetDIBColorCount( rSalBmp.mhDIB ) * sizeof( RGBQUAD ); 619 620 if( pBIH->biBitCount == 1 ) 621 { 622 hNewDDB = CreateBitmap( pBIH->biWidth, pBIH->biHeight, 1, 1, NULL ); 623 624 if( hNewDDB ) 625 SetDIBits( hDC, hNewDDB, 0, pBIH->biHeight, pBits, pBI, DIB_RGB_COLORS ); 626 } 627 else 628 hNewDDB = CreateDIBitmap( hDC, (PBITMAPINFOHEADER) pBI, CBM_INIT, pBits, pBI, DIB_RGB_COLORS ); 629 630 GlobalUnlock( rSalBmp.mhDIB ); 631 632 if( hNewDDB && WIN_GetObject( hNewDDB, sizeof( BITMAP ), &aDDBInfo ) ) 633 { 634 mhDDB = hNewDDB; 635 maSize = Size( aDDBInfo.bmWidth, aDDBInfo.bmHeight ); 636 mnBitCount = aDDBInfo.bmPlanes * aDDBInfo.bmBitsPixel; 637 638 bRet = TRUE; 639 } 640 else if( hNewDDB ) 641 DeleteObject( hNewDDB ); 642 } 643 644 return bRet; 645 } 646 647 // ------------------------------------------------------------------ 648 649 bool WinSalBitmap::Create( const SalBitmap& rSSalBmp, sal_uInt16 nNewBitCount ) 650 { 651 bool bRet = FALSE; 652 653 const WinSalBitmap& rSalBmp = static_cast<const WinSalBitmap&>(rSSalBmp); 654 655 if( rSalBmp.mhDDB ) 656 { 657 mhDIB = ImplCreateDIB( rSalBmp.maSize, nNewBitCount, BitmapPalette() ); 658 659 if( mhDIB ) 660 { 661 PBITMAPINFO pBI = (PBITMAPINFO) GlobalLock( mhDIB ); 662 const int nLines = (int) rSalBmp.maSize.Height(); 663 HDC hDC = GetDC( 0 ); 664 PBYTE pBits = (PBYTE) pBI + *(DWORD*) pBI + 665 ImplGetDIBColorCount( mhDIB ) * sizeof( RGBQUAD ); 666 SalData* pSalData = GetSalData(); 667 HPALETTE hOldPal = 0; 668 669 if ( pSalData->mhDitherPal ) 670 { 671 hOldPal = SelectPalette( hDC, pSalData->mhDitherPal, TRUE ); 672 RealizePalette( hDC ); 673 } 674 675 if( GetDIBits( hDC, rSalBmp.mhDDB, 0, nLines, pBits, pBI, DIB_RGB_COLORS ) == nLines ) 676 { 677 GlobalUnlock( mhDIB ); 678 maSize = rSalBmp.maSize; 679 mnBitCount = nNewBitCount; 680 bRet = TRUE; 681 } 682 else 683 { 684 GlobalUnlock( mhDIB ); 685 GlobalFree( mhDIB ); 686 mhDIB = 0; 687 } 688 689 if( hOldPal ) 690 SelectPalette( hDC, hOldPal, TRUE ); 691 692 ReleaseDC( 0, hDC ); 693 } 694 } 695 696 return bRet; 697 } 698 699 // ------------------------------------------------------------------ 700 701 sal_uInt16 WinSalBitmap::ImplGetDIBColorCount( HGLOBAL hDIB ) 702 { 703 sal_uInt16 nColors = 0; 704 705 if( hDIB ) 706 { 707 PBITMAPINFO pBI = (PBITMAPINFO) GlobalLock( hDIB ); 708 PBITMAPINFOHEADER pBIH = (PBITMAPINFOHEADER) pBI; 709 710 if ( pBIH->biSize != sizeof( BITMAPCOREHEADER ) ) 711 { 712 if( pBIH->biBitCount <= 8 ) 713 { 714 if ( pBIH->biClrUsed ) 715 nColors = (sal_uInt16) pBIH->biClrUsed; 716 else 717 nColors = 1 << pBIH->biBitCount; 718 } 719 } 720 else if( ( (PBITMAPCOREHEADER) pBI )->bcBitCount <= 8 ) 721 nColors = 1 << ( (PBITMAPCOREHEADER) pBI )->bcBitCount; 722 723 GlobalUnlock( hDIB ); 724 } 725 726 return nColors; 727 } 728 729 // ------------------------------------------------------------------ 730 731 HGLOBAL WinSalBitmap::ImplCreateDIB( const Size& rSize, sal_uInt16 nBits, const BitmapPalette& rPal ) 732 { 733 DBG_ASSERT( nBits == 1 || nBits == 4 || nBits == 8 || nBits == 16 || nBits == 24, "Unsupported BitCount!" ); 734 735 HGLOBAL hDIB = 0; 736 737 if( rSize.Width() <= 0 || rSize.Height() <= 0 ) 738 return hDIB; 739 740 // calculate bitmap size in Bytes 741 const sal_uLong nAlignedWidth4Bytes = AlignedWidth4Bytes( nBits * rSize.Width() ); 742 const sal_uLong nImageSize = nAlignedWidth4Bytes * rSize.Height(); 743 bool bOverflow = (nImageSize / nAlignedWidth4Bytes) != rSize.Height(); 744 if( bOverflow ) 745 return hDIB; 746 747 // allocate bitmap memory including header and palette 748 const sal_uInt16 nColors = (nBits <= 8) ? (1 << nBits) : 0; 749 const sal_uLong nHeaderSize = sizeof( BITMAPINFOHEADER ) + nColors * sizeof( RGBQUAD ); 750 bOverflow = (nHeaderSize + nImageSize) < nImageSize; 751 if( bOverflow ) 752 return hDIB; 753 754 hDIB = GlobalAlloc( GHND, nHeaderSize + nImageSize ); 755 if( !hDIB ) 756 return hDIB; 757 758 PBITMAPINFO pBI = static_cast<PBITMAPINFO>( GlobalLock( hDIB ) ); 759 PBITMAPINFOHEADER pBIH = reinterpret_cast<PBITMAPINFOHEADER>( pBI ); 760 761 pBIH->biSize = sizeof( BITMAPINFOHEADER ); 762 pBIH->biWidth = rSize.Width(); 763 pBIH->biHeight = rSize.Height(); 764 pBIH->biPlanes = 1; 765 pBIH->biBitCount = nBits; 766 pBIH->biCompression = BI_RGB; 767 pBIH->biSizeImage = nImageSize; 768 pBIH->biXPelsPerMeter = 0; 769 pBIH->biYPelsPerMeter = 0; 770 pBIH->biClrUsed = 0; 771 pBIH->biClrImportant = 0; 772 773 if( nColors ) 774 { 775 // copy the palette entries if any 776 const sal_uInt16 nMinCount = Min( nColors, rPal.GetEntryCount() ); 777 if( nMinCount ) 778 memcpy( pBI->bmiColors, rPal.ImplGetColorBuffer(), nMinCount * sizeof(RGBQUAD) ); 779 } 780 781 GlobalUnlock( hDIB ); 782 783 return hDIB; 784 } 785 786 // ------------------------------------------------------------------ 787 788 HANDLE WinSalBitmap::ImplCopyDIBOrDDB( HANDLE hHdl, bool bDIB ) 789 { 790 HANDLE hCopy = 0; 791 792 if ( bDIB && hHdl ) 793 { 794 const sal_uLong nSize = GlobalSize( hHdl ); 795 796 if ( (hCopy = GlobalAlloc( GHND, nSize )) != 0 ) 797 { 798 memcpy( (LPSTR) GlobalLock( hCopy ), (LPSTR) GlobalLock( hHdl ), nSize ); 799 800 GlobalUnlock( hCopy ); 801 GlobalUnlock( hHdl ); 802 } 803 } 804 else if ( hHdl ) 805 { 806 BITMAP aBmp; 807 808 // Source-Bitmap nach Groesse befragen 809 WIN_GetObject( hHdl, sizeof( BITMAP ), (LPSTR) &aBmp ); 810 811 // Destination-Bitmap erzeugen 812 if ( (hCopy = CreateBitmapIndirect( &aBmp )) != 0 ) 813 { 814 HDC hBmpDC = CreateCompatibleDC( 0 ); 815 HBITMAP hBmpOld = (HBITMAP) SelectObject( hBmpDC, hHdl ); 816 HDC hCopyDC = CreateCompatibleDC( hBmpDC ); 817 HBITMAP hCopyOld = (HBITMAP) SelectObject( hCopyDC, hCopy ); 818 819 BitBlt( hCopyDC, 0, 0, aBmp.bmWidth, aBmp.bmHeight, hBmpDC, 0, 0, SRCCOPY ); 820 821 SelectObject( hCopyDC, hCopyOld ); 822 DeleteDC( hCopyDC ); 823 824 SelectObject( hBmpDC, hBmpOld ); 825 DeleteDC( hBmpDC ); 826 } 827 } 828 829 return hCopy; 830 } 831 832 // ------------------------------------------------------------------ 833 834 BitmapBuffer* WinSalBitmap::AcquireBuffer( bool /*bReadOnly*/ ) 835 { 836 BitmapBuffer* pBuffer = NULL; 837 838 if( mhDIB ) 839 { 840 PBITMAPINFO pBI = (PBITMAPINFO) GlobalLock( mhDIB ); 841 PBITMAPINFOHEADER pBIH = (PBITMAPINFOHEADER) pBI; 842 843 if( ( pBIH->biCompression == BI_RLE4 ) || ( pBIH->biCompression == BI_RLE8 ) ) 844 { 845 Size aSizePix( pBIH->biWidth, pBIH->biHeight ); 846 HGLOBAL hNewDIB = ImplCreateDIB( aSizePix, pBIH->biBitCount, BitmapPalette() ); 847 848 if( hNewDIB ) 849 { 850 PBITMAPINFO pNewBI = (PBITMAPINFO) GlobalLock( hNewDIB ); 851 PBITMAPINFOHEADER pNewBIH = (PBITMAPINFOHEADER) pNewBI; 852 const sal_uInt16 nColorCount = ImplGetDIBColorCount( hNewDIB ); 853 const sal_uLong nOffset = *(DWORD*) pBI + nColorCount * sizeof( RGBQUAD ); 854 BYTE* pOldBits = (PBYTE) pBI + nOffset; 855 BYTE* pNewBits = (PBYTE) pNewBI + nOffset; 856 857 memcpy( pNewBI, pBI, nOffset ); 858 pNewBIH->biCompression = 0; 859 ImplDecodeRLEBuffer( pOldBits, pNewBits, aSizePix, pBIH->biCompression == BI_RLE4 ); 860 861 GlobalUnlock( mhDIB ); 862 GlobalFree( mhDIB ); 863 mhDIB = hNewDIB; 864 pBI = pNewBI; 865 pBIH = pNewBIH; 866 } 867 } 868 869 if( pBIH->biPlanes == 1 ) 870 { 871 pBuffer = new BitmapBuffer; 872 873 pBuffer->mnFormat = BMP_FORMAT_BOTTOM_UP | 874 ( pBIH->biBitCount == 1 ? BMP_FORMAT_1BIT_MSB_PAL : 875 pBIH->biBitCount == 4 ? BMP_FORMAT_4BIT_MSN_PAL : 876 pBIH->biBitCount == 8 ? BMP_FORMAT_8BIT_PAL : 877 pBIH->biBitCount == 16 ? BMP_FORMAT_16BIT_TC_LSB_MASK : 878 pBIH->biBitCount == 24 ? BMP_FORMAT_24BIT_TC_BGR : 879 pBIH->biBitCount == 32 ? BMP_FORMAT_32BIT_TC_MASK : 0UL ); 880 881 if( BMP_SCANLINE_FORMAT( pBuffer->mnFormat ) ) 882 { 883 pBuffer->mnWidth = maSize.Width(); 884 pBuffer->mnHeight = maSize.Height(); 885 pBuffer->mnScanlineSize = AlignedWidth4Bytes( maSize.Width() * pBIH->biBitCount ); 886 pBuffer->mnBitCount = (sal_uInt16) pBIH->biBitCount; 887 888 if( pBuffer->mnBitCount <= 8 ) 889 { 890 const sal_uInt16 nPalCount = ImplGetDIBColorCount( mhDIB ); 891 892 pBuffer->maPalette.SetEntryCount( nPalCount ); 893 memcpy( pBuffer->maPalette.ImplGetColorBuffer(), pBI->bmiColors, nPalCount * sizeof( RGBQUAD ) ); 894 pBuffer->mpBits = (PBYTE) pBI + *(DWORD*) pBI + nPalCount * sizeof( RGBQUAD ); 895 } 896 else if( ( pBIH->biBitCount == 16 ) || ( pBIH->biBitCount == 32 ) ) 897 { 898 sal_uLong nOffset = 0UL; 899 900 if( pBIH->biCompression == BI_BITFIELDS ) 901 { 902 nOffset = 3 * sizeof( RGBQUAD ); 903 pBuffer->maColorMask = ColorMask( *(UINT32*) &pBI->bmiColors[ 0 ], 904 *(UINT32*) &pBI->bmiColors[ 1 ], 905 *(UINT32*) &pBI->bmiColors[ 2 ] ); 906 } 907 else if( pBIH->biBitCount == 16 ) 908 pBuffer->maColorMask = ColorMask( 0x00007c00UL, 0x000003e0UL, 0x0000001fUL ); 909 else 910 pBuffer->maColorMask = ColorMask( 0x00ff0000UL, 0x0000ff00UL, 0x000000ffUL ); 911 912 pBuffer->mpBits = (PBYTE) pBI + *(DWORD*) pBI + nOffset; 913 } 914 else 915 pBuffer->mpBits = (PBYTE) pBI + *(DWORD*) pBI; 916 } 917 else 918 { 919 GlobalUnlock( mhDIB ); 920 delete pBuffer; 921 pBuffer = NULL; 922 } 923 } 924 else 925 GlobalUnlock( mhDIB ); 926 } 927 928 return pBuffer; 929 } 930 931 // ------------------------------------------------------------------ 932 933 void WinSalBitmap::ReleaseBuffer( BitmapBuffer* pBuffer, bool bReadOnly ) 934 { 935 if( pBuffer ) 936 { 937 if( mhDIB ) 938 { 939 if( !bReadOnly && !!pBuffer->maPalette ) 940 { 941 PBITMAPINFO pBI = (PBITMAPINFO) GlobalLock( mhDIB ); 942 const sal_uInt16 nCount = pBuffer->maPalette.GetEntryCount(); 943 const sal_uInt16 nDIBColorCount = ImplGetDIBColorCount( mhDIB ); 944 memcpy( pBI->bmiColors, pBuffer->maPalette.ImplGetColorBuffer(), Min( nDIBColorCount, nCount ) * sizeof( RGBQUAD ) ); 945 GlobalUnlock( mhDIB ); 946 } 947 948 GlobalUnlock( mhDIB ); 949 } 950 951 delete pBuffer; 952 } 953 } 954 955 // ------------------------------------------------------------------ 956 957 void WinSalBitmap::ImplDecodeRLEBuffer( const BYTE* pSrcBuf, BYTE* pDstBuf, 958 const Size& rSizePixel, bool bRLE4 ) 959 { 960 HPBYTE pRLE = (HPBYTE) pSrcBuf; 961 HPBYTE pDIB = (HPBYTE) pDstBuf; 962 HPBYTE pRow = (HPBYTE) pDstBuf; 963 sal_uLong nWidthAl = AlignedWidth4Bytes( rSizePixel.Width() * ( bRLE4 ? 4UL : 8UL ) ); 964 HPBYTE pLast = pDIB + rSizePixel.Height() * nWidthAl - 1; 965 sal_uLong nCountByte; 966 sal_uLong nRunByte; 967 sal_uLong nX = 0; 968 sal_uLong i; 969 BYTE cTmp; 970 bool bEndDecoding = FALSE; 971 972 if( pRLE && pDIB ) 973 { 974 do 975 { 976 if( ( nCountByte = *pRLE++ ) == 0 ) 977 { 978 nRunByte = *pRLE++; 979 980 if( nRunByte > 2UL ) 981 { 982 if( bRLE4 ) 983 { 984 nCountByte = nRunByte >> 1UL; 985 986 for( i = 0; i < nCountByte; i++ ) 987 { 988 cTmp = *pRLE++; 989 ImplSetPixel4( pDIB, nX++, cTmp >> 4 ); 990 ImplSetPixel4( pDIB, nX++, cTmp & 0x0f ); 991 } 992 993 if( nRunByte & 1 ) 994 ImplSetPixel4( pDIB, nX++, *pRLE++ >> 4 ); 995 996 if( ( ( nRunByte + 1 ) >> 1 ) & 1 ) 997 pRLE++; 998 } 999 else 1000 { 1001 memcpy( &pDIB[ nX ], pRLE, nRunByte ); 1002 pRLE += nRunByte; 1003 nX += nRunByte; 1004 1005 if( nRunByte & 1 ) 1006 pRLE++; 1007 } 1008 } 1009 else if( !nRunByte ) 1010 { 1011 pDIB = ( pRow += nWidthAl ); 1012 nX = 0UL; 1013 } 1014 else if( nRunByte == 1 ) 1015 bEndDecoding = TRUE; 1016 else 1017 { 1018 nX += *pRLE++; 1019 pDIB = ( pRow += ( *pRLE++ ) * nWidthAl ); 1020 } 1021 } 1022 else 1023 { 1024 cTmp = *pRLE++; 1025 1026 if( bRLE4 ) 1027 { 1028 nRunByte = nCountByte >> 1; 1029 1030 for( i = 0; i < nRunByte; i++ ) 1031 { 1032 ImplSetPixel4( pDIB, nX++, cTmp >> 4 ); 1033 ImplSetPixel4( pDIB, nX++, cTmp & 0x0f ); 1034 } 1035 1036 if( nCountByte & 1 ) 1037 ImplSetPixel4( pDIB, nX++, cTmp >> 4 ); 1038 } 1039 else 1040 { 1041 for( i = 0; i < nCountByte; i++ ) 1042 pDIB[ nX++ ] = cTmp; 1043 } 1044 } 1045 } 1046 while( !bEndDecoding && ( pDIB <= pLast ) ); 1047 } 1048 } 1049 1050 bool WinSalBitmap::GetSystemData( BitmapSystemData& rData ) 1051 { 1052 bool bRet = false; 1053 if( mhDIB || mhDDB ) 1054 { 1055 bRet = true; 1056 rData.pDIB = mhDIB; 1057 rData.pDDB = mhDDB; 1058 const Size& rSize = GetSize (); 1059 rData.mnWidth = rSize.Width(); 1060 rData.mnHeight = rSize.Height(); 1061 } 1062 return bRet; 1063 } 1064