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 // #123478# shockingly, BitmapBuffer does not free the memory it is controlling 337 // in it's destructor, this *has to be done handish*. Doing it here now 338 delete[] pExtraRGB->mpBits; 339 delete pExtraRGB; 340 } 341 else 342 { 343 pSalRGB->ReleaseBuffer(pRGB, true); 344 } 345 346 if(pExtraWinSalRGB) 347 { 348 delete pExtraWinSalRGB; 349 } 350 351 return pRetval; 352 } 353 354 // ------------------------------------------------------------------ 355 356 Gdiplus::Bitmap* WinSalBitmap::ImplCreateGdiPlusBitmap(const WinSalBitmap& rAlphaSource) 357 { 358 Gdiplus::Bitmap* pRetval(0); 359 WinSalBitmap* pSalRGB = const_cast< WinSalBitmap* >(this); 360 WinSalBitmap* pExtraWinSalRGB = 0; 361 362 if(!pSalRGB->ImplGethDIB()) 363 { 364 // we need DIB for success with AcquireBuffer, create a replacement WinSalBitmap 365 pExtraWinSalRGB = new WinSalBitmap(); 366 pExtraWinSalRGB->Create(*pSalRGB, pSalRGB->GetBitCount()); 367 pSalRGB = pExtraWinSalRGB; 368 } 369 370 BitmapBuffer* pRGB = pSalRGB->AcquireBuffer(true); 371 BitmapBuffer* pExtraRGB = 0; 372 373 if(pRGB && BMP_FORMAT_24BIT_TC_BGR != (pRGB->mnFormat & ~BMP_FORMAT_TOP_DOWN)) 374 { 375 // convert source bitmap to BMP_FORMAT_24BIT_TC_BGR format if not yet in that format 376 SalTwoRect aSalTwoRect; 377 378 aSalTwoRect.mnSrcX = aSalTwoRect.mnSrcY = aSalTwoRect.mnDestX = aSalTwoRect.mnDestY = 0; 379 aSalTwoRect.mnSrcWidth = aSalTwoRect.mnDestWidth = pRGB->mnWidth; 380 aSalTwoRect.mnSrcHeight = aSalTwoRect.mnDestHeight = pRGB->mnHeight; 381 382 pExtraRGB = StretchAndConvert( 383 *pRGB, 384 aSalTwoRect, 385 BMP_FORMAT_24BIT_TC_BGR, 386 0); 387 388 pSalRGB->ReleaseBuffer(pRGB, true); 389 pRGB = pExtraRGB; 390 } 391 392 WinSalBitmap* pSalA = const_cast< WinSalBitmap* >(&rAlphaSource); 393 WinSalBitmap* pExtraWinSalA = 0; 394 395 if(!pSalA->ImplGethDIB()) 396 { 397 // we need DIB for success with AcquireBuffer, create a replacement WinSalBitmap 398 pExtraWinSalA = new WinSalBitmap(); 399 pExtraWinSalA->Create(*pSalA, pSalA->GetBitCount()); 400 pSalA = pExtraWinSalA; 401 } 402 403 BitmapBuffer* pA = pSalA->AcquireBuffer(true); 404 BitmapBuffer* pExtraA = 0; 405 406 if(pA && BMP_FORMAT_8BIT_PAL != (pA->mnFormat & ~BMP_FORMAT_TOP_DOWN)) 407 { 408 // convert alpha bitmap to BMP_FORMAT_8BIT_PAL format if not yet in that format 409 SalTwoRect aSalTwoRect; 410 411 aSalTwoRect.mnSrcX = aSalTwoRect.mnSrcY = aSalTwoRect.mnDestX = aSalTwoRect.mnDestY = 0; 412 aSalTwoRect.mnSrcWidth = aSalTwoRect.mnDestWidth = pA->mnWidth; 413 aSalTwoRect.mnSrcHeight = aSalTwoRect.mnDestHeight = pA->mnHeight; 414 const BitmapPalette& rTargetPalette = Bitmap::GetGreyPalette(256); 415 416 pExtraA = StretchAndConvert( 417 *pA, 418 aSalTwoRect, 419 BMP_FORMAT_8BIT_PAL, 420 &rTargetPalette); 421 422 pSalA->ReleaseBuffer(pA, true); 423 pA = pExtraA; 424 } 425 426 if(pRGB 427 && pA 428 && pRGB->mnWidth > 0 429 && pRGB->mnHeight > 0 430 && pRGB->mnWidth == pA->mnWidth 431 && pRGB->mnHeight == pA->mnHeight 432 && BMP_FORMAT_24BIT_TC_BGR == (pRGB->mnFormat & ~BMP_FORMAT_TOP_DOWN) 433 && BMP_FORMAT_8BIT_PAL == (pA->mnFormat & ~BMP_FORMAT_TOP_DOWN)) 434 { 435 // we have alpha and bitmap in known formats, create GdiPlus Bitmap as 32bit ARGB 436 const sal_uInt32 nW(pRGB->mnWidth); 437 const sal_uInt32 nH(pRGB->mnHeight); 438 439 pRetval = new Gdiplus::Bitmap(nW, nH, PixelFormat32bppARGB); 440 441 if(pRetval) 442 { 443 sal_uInt8* pSrcRGB(pRGB->mpBits); 444 sal_uInt8* pSrcA(pA->mpBits); 445 const sal_uInt32 nExtraRGB(pRGB->mnScanlineSize - (nW * 3)); 446 const sal_uInt32 nExtraA(pA->mnScanlineSize - nW); 447 const bool bTopDown(pRGB->mnFormat & BMP_FORMAT_TOP_DOWN); 448 const Gdiplus::Rect aAllRect(0, 0, nW, nH); 449 Gdiplus::BitmapData aGdiPlusBitmapData; 450 pRetval->LockBits(&aAllRect, Gdiplus::ImageLockModeWrite, PixelFormat32bppARGB, &aGdiPlusBitmapData); 451 452 // copy data to Gdiplus::Bitmap; format is BGRA; need to mix BGR from Bitmap and 453 // A from alpha, so inner loop is needed (who invented BitmapEx..?) 454 for(sal_uInt32 y(0); y < nH; y++) 455 { 456 const sal_uInt32 nYInsert(bTopDown ? y : nH - y - 1); 457 sal_uInt8* targetPixels = (sal_uInt8*)aGdiPlusBitmapData.Scan0 + (nYInsert * aGdiPlusBitmapData.Stride); 458 459 for(sal_uInt32 x(0); x < nW; x++) 460 { 461 *targetPixels++ = *pSrcRGB++; 462 *targetPixels++ = *pSrcRGB++; 463 *targetPixels++ = *pSrcRGB++; 464 *targetPixels++ = 0xff - *pSrcA++; 465 } 466 467 pSrcRGB += nExtraRGB; 468 pSrcA += nExtraA; 469 } 470 471 pRetval->UnlockBits(&aGdiPlusBitmapData); 472 } 473 } 474 475 if(pExtraA) 476 { 477 // #123478# shockingly, BitmapBuffer does not free the memory it is controlling 478 // in it's destructor, this *has to be done handish*. Doing it here now 479 delete[] pExtraA->mpBits; 480 delete pExtraA; 481 } 482 else 483 { 484 pSalA->ReleaseBuffer(pA, true); 485 } 486 487 if(pExtraWinSalA) 488 { 489 delete pExtraWinSalA; 490 } 491 492 if(pExtraRGB) 493 { 494 // #123478# shockingly, BitmapBuffer does not free the memory it is controlling 495 // in it's destructor, this *has to be done handish*. Doing it here now 496 delete[] pExtraRGB->mpBits; 497 delete pExtraRGB; 498 } 499 else 500 { 501 pSalRGB->ReleaseBuffer(pRGB, true); 502 } 503 504 if(pExtraWinSalRGB) 505 { 506 delete pExtraWinSalRGB; 507 } 508 509 return pRetval; 510 } 511 512 // ------------------------------------------------------------------ 513 514 bool WinSalBitmap::Create( HANDLE hBitmap, bool bDIB, bool bCopyHandle ) 515 { 516 bool bRet = TRUE; 517 518 if( bDIB ) 519 mhDIB = (HGLOBAL) ( bCopyHandle ? ImplCopyDIBOrDDB( hBitmap, TRUE ) : hBitmap ); 520 else 521 mhDDB = (HBITMAP) ( bCopyHandle ? ImplCopyDIBOrDDB( hBitmap, FALSE ) : hBitmap ); 522 523 if( mhDIB ) 524 { 525 PBITMAPINFOHEADER pBIH = (PBITMAPINFOHEADER) GlobalLock( mhDIB ); 526 527 maSize = Size( pBIH->biWidth, pBIH->biHeight ); 528 mnBitCount = pBIH->biBitCount; 529 530 if( mnBitCount ) 531 mnBitCount = ( mnBitCount <= 1 ) ? 1 : ( mnBitCount <= 4 ) ? 4 : ( mnBitCount <= 8 ) ? 8 : 24; 532 533 GlobalUnlock( mhDIB ); 534 } 535 else if( mhDDB ) 536 { 537 BITMAP aDDBInfo; 538 539 if( WIN_GetObject( mhDDB, sizeof( BITMAP ), &aDDBInfo ) ) 540 { 541 maSize = Size( aDDBInfo.bmWidth, aDDBInfo.bmHeight ); 542 mnBitCount = aDDBInfo.bmPlanes * aDDBInfo.bmBitsPixel; 543 544 if( mnBitCount ) 545 { 546 mnBitCount = ( mnBitCount <= 1 ) ? 1 : 547 ( mnBitCount <= 4 ) ? 4 : 548 ( mnBitCount <= 8 ) ? 8 : 24; 549 } 550 } 551 else 552 { 553 mhDDB = 0; 554 bRet = FALSE; 555 } 556 } 557 else 558 bRet = FALSE; 559 560 return bRet; 561 } 562 563 // ------------------------------------------------------------------ 564 565 bool WinSalBitmap::Create( const Size& rSize, sal_uInt16 nBitCount, const BitmapPalette& rPal ) 566 { 567 bool bRet = FALSE; 568 569 mhDIB = ImplCreateDIB( rSize, nBitCount, rPal ); 570 571 if( mhDIB ) 572 { 573 maSize = rSize; 574 mnBitCount = nBitCount; 575 bRet = TRUE; 576 } 577 578 return bRet; 579 } 580 581 // ------------------------------------------------------------------ 582 583 bool WinSalBitmap::Create( const SalBitmap& rSSalBitmap ) 584 { 585 bool bRet = FALSE; 586 const WinSalBitmap& rSalBitmap = static_cast<const WinSalBitmap&>(rSSalBitmap); 587 588 if ( rSalBitmap.mhDIB || rSalBitmap.mhDDB ) 589 { 590 HANDLE hNewHdl = ImplCopyDIBOrDDB( rSalBitmap.mhDIB ? rSalBitmap.mhDIB : rSalBitmap.mhDDB, 591 rSalBitmap.mhDIB != 0 ); 592 593 if ( hNewHdl ) 594 { 595 if( rSalBitmap.mhDIB ) 596 mhDIB = (HGLOBAL) hNewHdl; 597 else if( rSalBitmap.mhDDB ) 598 mhDDB = (HBITMAP) hNewHdl; 599 600 maSize = rSalBitmap.maSize; 601 mnBitCount = rSalBitmap.mnBitCount; 602 603 bRet = TRUE; 604 } 605 } 606 607 return bRet; 608 } 609 610 // ------------------------------------------------------------------ 611 612 bool WinSalBitmap::Create( const SalBitmap& rSSalBmp, SalGraphics* pSGraphics ) 613 { 614 bool bRet = FALSE; 615 616 const WinSalBitmap& rSalBmp = static_cast<const WinSalBitmap&>(rSSalBmp); 617 WinSalGraphics* pGraphics = static_cast<WinSalGraphics*>(pSGraphics); 618 619 if( rSalBmp.mhDIB ) 620 { 621 PBITMAPINFO pBI = (PBITMAPINFO) GlobalLock( rSalBmp.mhDIB ); 622 PBITMAPINFOHEADER pBIH = (PBITMAPINFOHEADER) pBI; 623 HDC hDC = pGraphics->getHDC(); 624 HBITMAP hNewDDB; 625 BITMAP aDDBInfo; 626 PBYTE pBits = (PBYTE) pBI + *(DWORD*) pBI + 627 ImplGetDIBColorCount( rSalBmp.mhDIB ) * sizeof( RGBQUAD ); 628 629 if( pBIH->biBitCount == 1 ) 630 { 631 hNewDDB = CreateBitmap( pBIH->biWidth, pBIH->biHeight, 1, 1, NULL ); 632 633 if( hNewDDB ) 634 SetDIBits( hDC, hNewDDB, 0, pBIH->biHeight, pBits, pBI, DIB_RGB_COLORS ); 635 } 636 else 637 hNewDDB = CreateDIBitmap( hDC, (PBITMAPINFOHEADER) pBI, CBM_INIT, pBits, pBI, DIB_RGB_COLORS ); 638 639 GlobalUnlock( rSalBmp.mhDIB ); 640 641 if( hNewDDB && WIN_GetObject( hNewDDB, sizeof( BITMAP ), &aDDBInfo ) ) 642 { 643 mhDDB = hNewDDB; 644 maSize = Size( aDDBInfo.bmWidth, aDDBInfo.bmHeight ); 645 mnBitCount = aDDBInfo.bmPlanes * aDDBInfo.bmBitsPixel; 646 647 bRet = TRUE; 648 } 649 else if( hNewDDB ) 650 DeleteObject( hNewDDB ); 651 } 652 653 return bRet; 654 } 655 656 // ------------------------------------------------------------------ 657 658 bool WinSalBitmap::Create( const SalBitmap& rSSalBmp, sal_uInt16 nNewBitCount ) 659 { 660 bool bRet = FALSE; 661 662 const WinSalBitmap& rSalBmp = static_cast<const WinSalBitmap&>(rSSalBmp); 663 664 if( rSalBmp.mhDDB ) 665 { 666 mhDIB = ImplCreateDIB( rSalBmp.maSize, nNewBitCount, BitmapPalette() ); 667 668 if( mhDIB ) 669 { 670 PBITMAPINFO pBI = (PBITMAPINFO) GlobalLock( mhDIB ); 671 const int nLines = (int) rSalBmp.maSize.Height(); 672 HDC hDC = GetDC( 0 ); 673 PBYTE pBits = (PBYTE) pBI + *(DWORD*) pBI + 674 ImplGetDIBColorCount( mhDIB ) * sizeof( RGBQUAD ); 675 SalData* pSalData = GetSalData(); 676 HPALETTE hOldPal = 0; 677 678 if ( pSalData->mhDitherPal ) 679 { 680 hOldPal = SelectPalette( hDC, pSalData->mhDitherPal, TRUE ); 681 RealizePalette( hDC ); 682 } 683 684 if( GetDIBits( hDC, rSalBmp.mhDDB, 0, nLines, pBits, pBI, DIB_RGB_COLORS ) == nLines ) 685 { 686 GlobalUnlock( mhDIB ); 687 maSize = rSalBmp.maSize; 688 mnBitCount = nNewBitCount; 689 bRet = TRUE; 690 } 691 else 692 { 693 GlobalUnlock( mhDIB ); 694 GlobalFree( mhDIB ); 695 mhDIB = 0; 696 } 697 698 if( hOldPal ) 699 SelectPalette( hDC, hOldPal, TRUE ); 700 701 ReleaseDC( 0, hDC ); 702 } 703 } 704 705 return bRet; 706 } 707 708 // ------------------------------------------------------------------ 709 710 sal_uInt16 WinSalBitmap::ImplGetDIBColorCount( HGLOBAL hDIB ) 711 { 712 sal_uInt16 nColors = 0; 713 714 if( hDIB ) 715 { 716 PBITMAPINFO pBI = (PBITMAPINFO) GlobalLock( hDIB ); 717 PBITMAPINFOHEADER pBIH = (PBITMAPINFOHEADER) pBI; 718 719 if ( pBIH->biSize != sizeof( BITMAPCOREHEADER ) ) 720 { 721 if( pBIH->biBitCount <= 8 ) 722 { 723 if ( pBIH->biClrUsed ) 724 nColors = (sal_uInt16) pBIH->biClrUsed; 725 else 726 nColors = 1 << pBIH->biBitCount; 727 } 728 } 729 else if( ( (PBITMAPCOREHEADER) pBI )->bcBitCount <= 8 ) 730 nColors = 1 << ( (PBITMAPCOREHEADER) pBI )->bcBitCount; 731 732 GlobalUnlock( hDIB ); 733 } 734 735 return nColors; 736 } 737 738 // ------------------------------------------------------------------ 739 740 HGLOBAL WinSalBitmap::ImplCreateDIB( const Size& rSize, sal_uInt16 nBits, const BitmapPalette& rPal ) 741 { 742 DBG_ASSERT( nBits == 1 || nBits == 4 || nBits == 8 || nBits == 16 || nBits == 24, "Unsupported BitCount!" ); 743 744 HGLOBAL hDIB = 0; 745 746 if( rSize.Width() <= 0 || rSize.Height() <= 0 ) 747 return hDIB; 748 749 // calculate bitmap size in Bytes 750 const sal_uLong nAlignedWidth4Bytes = AlignedWidth4Bytes( nBits * rSize.Width() ); 751 const sal_uLong nImageSize = nAlignedWidth4Bytes * rSize.Height(); 752 bool bOverflow = (nImageSize / nAlignedWidth4Bytes) != rSize.Height(); 753 if( bOverflow ) 754 return hDIB; 755 756 // allocate bitmap memory including header and palette 757 const sal_uInt16 nColors = (nBits <= 8) ? (1 << nBits) : 0; 758 const sal_uLong nHeaderSize = sizeof( BITMAPINFOHEADER ) + nColors * sizeof( RGBQUAD ); 759 bOverflow = (nHeaderSize + nImageSize) < nImageSize; 760 if( bOverflow ) 761 return hDIB; 762 763 hDIB = GlobalAlloc( GHND, nHeaderSize + nImageSize ); 764 if( !hDIB ) 765 return hDIB; 766 767 PBITMAPINFO pBI = static_cast<PBITMAPINFO>( GlobalLock( hDIB ) ); 768 PBITMAPINFOHEADER pBIH = reinterpret_cast<PBITMAPINFOHEADER>( pBI ); 769 770 pBIH->biSize = sizeof( BITMAPINFOHEADER ); 771 pBIH->biWidth = rSize.Width(); 772 pBIH->biHeight = rSize.Height(); 773 pBIH->biPlanes = 1; 774 pBIH->biBitCount = nBits; 775 pBIH->biCompression = BI_RGB; 776 pBIH->biSizeImage = nImageSize; 777 pBIH->biXPelsPerMeter = 0; 778 pBIH->biYPelsPerMeter = 0; 779 pBIH->biClrUsed = 0; 780 pBIH->biClrImportant = 0; 781 782 if( nColors ) 783 { 784 // copy the palette entries if any 785 const sal_uInt16 nMinCount = Min( nColors, rPal.GetEntryCount() ); 786 if( nMinCount ) 787 memcpy( pBI->bmiColors, rPal.ImplGetColorBuffer(), nMinCount * sizeof(RGBQUAD) ); 788 } 789 790 GlobalUnlock( hDIB ); 791 792 return hDIB; 793 } 794 795 // ------------------------------------------------------------------ 796 797 HANDLE WinSalBitmap::ImplCopyDIBOrDDB( HANDLE hHdl, bool bDIB ) 798 { 799 HANDLE hCopy = 0; 800 801 if ( bDIB && hHdl ) 802 { 803 const sal_uLong nSize = GlobalSize( hHdl ); 804 805 if ( (hCopy = GlobalAlloc( GHND, nSize )) != 0 ) 806 { 807 memcpy( (LPSTR) GlobalLock( hCopy ), (LPSTR) GlobalLock( hHdl ), nSize ); 808 809 GlobalUnlock( hCopy ); 810 GlobalUnlock( hHdl ); 811 } 812 } 813 else if ( hHdl ) 814 { 815 BITMAP aBmp; 816 817 // Source-Bitmap nach Groesse befragen 818 WIN_GetObject( hHdl, sizeof( BITMAP ), (LPSTR) &aBmp ); 819 820 // Destination-Bitmap erzeugen 821 if ( (hCopy = CreateBitmapIndirect( &aBmp )) != 0 ) 822 { 823 HDC hBmpDC = CreateCompatibleDC( 0 ); 824 HBITMAP hBmpOld = (HBITMAP) SelectObject( hBmpDC, hHdl ); 825 HDC hCopyDC = CreateCompatibleDC( hBmpDC ); 826 HBITMAP hCopyOld = (HBITMAP) SelectObject( hCopyDC, hCopy ); 827 828 BitBlt( hCopyDC, 0, 0, aBmp.bmWidth, aBmp.bmHeight, hBmpDC, 0, 0, SRCCOPY ); 829 830 SelectObject( hCopyDC, hCopyOld ); 831 DeleteDC( hCopyDC ); 832 833 SelectObject( hBmpDC, hBmpOld ); 834 DeleteDC( hBmpDC ); 835 } 836 } 837 838 return hCopy; 839 } 840 841 // ------------------------------------------------------------------ 842 843 BitmapBuffer* WinSalBitmap::AcquireBuffer( bool /*bReadOnly*/ ) 844 { 845 BitmapBuffer* pBuffer = NULL; 846 847 if( mhDIB ) 848 { 849 PBITMAPINFO pBI = (PBITMAPINFO) GlobalLock( mhDIB ); 850 PBITMAPINFOHEADER pBIH = (PBITMAPINFOHEADER) pBI; 851 852 if( ( pBIH->biCompression == BI_RLE4 ) || ( pBIH->biCompression == BI_RLE8 ) ) 853 { 854 Size aSizePix( pBIH->biWidth, pBIH->biHeight ); 855 HGLOBAL hNewDIB = ImplCreateDIB( aSizePix, pBIH->biBitCount, BitmapPalette() ); 856 857 if( hNewDIB ) 858 { 859 PBITMAPINFO pNewBI = (PBITMAPINFO) GlobalLock( hNewDIB ); 860 PBITMAPINFOHEADER pNewBIH = (PBITMAPINFOHEADER) pNewBI; 861 const sal_uInt16 nColorCount = ImplGetDIBColorCount( hNewDIB ); 862 const sal_uLong nOffset = *(DWORD*) pBI + nColorCount * sizeof( RGBQUAD ); 863 BYTE* pOldBits = (PBYTE) pBI + nOffset; 864 BYTE* pNewBits = (PBYTE) pNewBI + nOffset; 865 866 memcpy( pNewBI, pBI, nOffset ); 867 pNewBIH->biCompression = 0; 868 ImplDecodeRLEBuffer( pOldBits, pNewBits, aSizePix, pBIH->biCompression == BI_RLE4 ); 869 870 GlobalUnlock( mhDIB ); 871 GlobalFree( mhDIB ); 872 mhDIB = hNewDIB; 873 pBI = pNewBI; 874 pBIH = pNewBIH; 875 } 876 } 877 878 if( pBIH->biPlanes == 1 ) 879 { 880 pBuffer = new BitmapBuffer; 881 882 pBuffer->mnFormat = BMP_FORMAT_BOTTOM_UP | 883 ( pBIH->biBitCount == 1 ? BMP_FORMAT_1BIT_MSB_PAL : 884 pBIH->biBitCount == 4 ? BMP_FORMAT_4BIT_MSN_PAL : 885 pBIH->biBitCount == 8 ? BMP_FORMAT_8BIT_PAL : 886 pBIH->biBitCount == 16 ? BMP_FORMAT_16BIT_TC_LSB_MASK : 887 pBIH->biBitCount == 24 ? BMP_FORMAT_24BIT_TC_BGR : 888 pBIH->biBitCount == 32 ? BMP_FORMAT_32BIT_TC_MASK : 0UL ); 889 890 if( BMP_SCANLINE_FORMAT( pBuffer->mnFormat ) ) 891 { 892 pBuffer->mnWidth = maSize.Width(); 893 pBuffer->mnHeight = maSize.Height(); 894 pBuffer->mnScanlineSize = AlignedWidth4Bytes( maSize.Width() * pBIH->biBitCount ); 895 pBuffer->mnBitCount = (sal_uInt16) pBIH->biBitCount; 896 897 if( pBuffer->mnBitCount <= 8 ) 898 { 899 const sal_uInt16 nPalCount = ImplGetDIBColorCount( mhDIB ); 900 901 pBuffer->maPalette.SetEntryCount( nPalCount ); 902 memcpy( pBuffer->maPalette.ImplGetColorBuffer(), pBI->bmiColors, nPalCount * sizeof( RGBQUAD ) ); 903 pBuffer->mpBits = (PBYTE) pBI + *(DWORD*) pBI + nPalCount * sizeof( RGBQUAD ); 904 } 905 else if( ( pBIH->biBitCount == 16 ) || ( pBIH->biBitCount == 32 ) ) 906 { 907 sal_uLong nOffset = 0UL; 908 909 if( pBIH->biCompression == BI_BITFIELDS ) 910 { 911 nOffset = 3 * sizeof( RGBQUAD ); 912 pBuffer->maColorMask = ColorMask( *(UINT32*) &pBI->bmiColors[ 0 ], 913 *(UINT32*) &pBI->bmiColors[ 1 ], 914 *(UINT32*) &pBI->bmiColors[ 2 ] ); 915 } 916 else if( pBIH->biBitCount == 16 ) 917 pBuffer->maColorMask = ColorMask( 0x00007c00UL, 0x000003e0UL, 0x0000001fUL ); 918 else 919 pBuffer->maColorMask = ColorMask( 0x00ff0000UL, 0x0000ff00UL, 0x000000ffUL ); 920 921 pBuffer->mpBits = (PBYTE) pBI + *(DWORD*) pBI + nOffset; 922 } 923 else 924 pBuffer->mpBits = (PBYTE) pBI + *(DWORD*) pBI; 925 } 926 else 927 { 928 GlobalUnlock( mhDIB ); 929 delete pBuffer; 930 pBuffer = NULL; 931 } 932 } 933 else 934 GlobalUnlock( mhDIB ); 935 } 936 937 return pBuffer; 938 } 939 940 // ------------------------------------------------------------------ 941 942 void WinSalBitmap::ReleaseBuffer( BitmapBuffer* pBuffer, bool bReadOnly ) 943 { 944 if( pBuffer ) 945 { 946 if( mhDIB ) 947 { 948 if( !bReadOnly && !!pBuffer->maPalette ) 949 { 950 PBITMAPINFO pBI = (PBITMAPINFO) GlobalLock( mhDIB ); 951 const sal_uInt16 nCount = pBuffer->maPalette.GetEntryCount(); 952 const sal_uInt16 nDIBColorCount = ImplGetDIBColorCount( mhDIB ); 953 memcpy( pBI->bmiColors, pBuffer->maPalette.ImplGetColorBuffer(), Min( nDIBColorCount, nCount ) * sizeof( RGBQUAD ) ); 954 GlobalUnlock( mhDIB ); 955 } 956 957 GlobalUnlock( mhDIB ); 958 } 959 960 delete pBuffer; 961 } 962 } 963 964 // ------------------------------------------------------------------ 965 966 void WinSalBitmap::ImplDecodeRLEBuffer( const BYTE* pSrcBuf, BYTE* pDstBuf, 967 const Size& rSizePixel, bool bRLE4 ) 968 { 969 HPBYTE pRLE = (HPBYTE) pSrcBuf; 970 HPBYTE pDIB = (HPBYTE) pDstBuf; 971 HPBYTE pRow = (HPBYTE) pDstBuf; 972 sal_uLong nWidthAl = AlignedWidth4Bytes( rSizePixel.Width() * ( bRLE4 ? 4UL : 8UL ) ); 973 HPBYTE pLast = pDIB + rSizePixel.Height() * nWidthAl - 1; 974 sal_uLong nCountByte; 975 sal_uLong nRunByte; 976 sal_uLong nX = 0; 977 sal_uLong i; 978 BYTE cTmp; 979 bool bEndDecoding = FALSE; 980 981 if( pRLE && pDIB ) 982 { 983 do 984 { 985 if( ( nCountByte = *pRLE++ ) == 0 ) 986 { 987 nRunByte = *pRLE++; 988 989 if( nRunByte > 2UL ) 990 { 991 if( bRLE4 ) 992 { 993 nCountByte = nRunByte >> 1UL; 994 995 for( i = 0; i < nCountByte; i++ ) 996 { 997 cTmp = *pRLE++; 998 ImplSetPixel4( pDIB, nX++, cTmp >> 4 ); 999 ImplSetPixel4( pDIB, nX++, cTmp & 0x0f ); 1000 } 1001 1002 if( nRunByte & 1 ) 1003 ImplSetPixel4( pDIB, nX++, *pRLE++ >> 4 ); 1004 1005 if( ( ( nRunByte + 1 ) >> 1 ) & 1 ) 1006 pRLE++; 1007 } 1008 else 1009 { 1010 memcpy( &pDIB[ nX ], pRLE, nRunByte ); 1011 pRLE += nRunByte; 1012 nX += nRunByte; 1013 1014 if( nRunByte & 1 ) 1015 pRLE++; 1016 } 1017 } 1018 else if( !nRunByte ) 1019 { 1020 pDIB = ( pRow += nWidthAl ); 1021 nX = 0UL; 1022 } 1023 else if( nRunByte == 1 ) 1024 bEndDecoding = TRUE; 1025 else 1026 { 1027 nX += *pRLE++; 1028 pDIB = ( pRow += ( *pRLE++ ) * nWidthAl ); 1029 } 1030 } 1031 else 1032 { 1033 cTmp = *pRLE++; 1034 1035 if( bRLE4 ) 1036 { 1037 nRunByte = nCountByte >> 1; 1038 1039 for( i = 0; i < nRunByte; i++ ) 1040 { 1041 ImplSetPixel4( pDIB, nX++, cTmp >> 4 ); 1042 ImplSetPixel4( pDIB, nX++, cTmp & 0x0f ); 1043 } 1044 1045 if( nCountByte & 1 ) 1046 ImplSetPixel4( pDIB, nX++, cTmp >> 4 ); 1047 } 1048 else 1049 { 1050 for( i = 0; i < nCountByte; i++ ) 1051 pDIB[ nX++ ] = cTmp; 1052 } 1053 } 1054 } 1055 while( !bEndDecoding && ( pDIB <= pLast ) ); 1056 } 1057 } 1058 1059 bool WinSalBitmap::GetSystemData( BitmapSystemData& rData ) 1060 { 1061 bool bRet = false; 1062 if( mhDIB || mhDDB ) 1063 { 1064 bRet = true; 1065 rData.pDIB = mhDIB; 1066 rData.pDDB = mhDDB; 1067 const Size& rSize = GetSize (); 1068 rData.mnWidth = rSize.Width(); 1069 rData.mnHeight = rSize.Height(); 1070 } 1071 return bRet; 1072 } 1073