pngwrite.cxx (9f62ea84) pngwrite.cxx (87bc88d3)
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

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361 ImplCloseChunk();
362 delete[] pTempBuf;
363}
364
365// ------------------------------------------------------------------------
366
367void PNGWriterImpl::ImplWriteTransparent ()
368{
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

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361 ImplCloseChunk();
362 delete[] pTempBuf;
363}
364
365// ------------------------------------------------------------------------
366
367void PNGWriterImpl::ImplWriteTransparent ()
368{
369 const sal_uLong nTransIndex = mpAccess->GetBestMatchingColor( BMP_COL_TRANS );
369 const sal_uLong nTransIndex = mpAccess->GetBestPaletteIndex( BMP_COL_TRANS );
370
371 ImplOpenChunk( PNGCHUNK_tRNS );
372
373 for ( sal_uLong n = 0UL; n <= nTransIndex; n++ )
374 ImplWriteChunk( ( nTransIndex == n ) ? (sal_uInt8) 0x0 : (sal_uInt8) 0xff );
375
376 ImplCloseChunk();
377}

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512 {
513 case( 1 ):
514 {
515 sal_uLong nX, nXIndex;
516 for ( nX = nXStart, nXIndex = 0; nX < mnWidth; nX+=nXAdd, nXIndex++ )
517 {
518 sal_uLong nShift = ( nXIndex & 7 ) ^ 7;
519 if ( nShift == 7)
370
371 ImplOpenChunk( PNGCHUNK_tRNS );
372
373 for ( sal_uLong n = 0UL; n <= nTransIndex; n++ )
374 ImplWriteChunk( ( nTransIndex == n ) ? (sal_uInt8) 0x0 : (sal_uInt8) 0xff );
375
376 ImplCloseChunk();
377}

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512 {
513 case( 1 ):
514 {
515 sal_uLong nX, nXIndex;
516 for ( nX = nXStart, nXIndex = 0; nX < mnWidth; nX+=nXAdd, nXIndex++ )
517 {
518 sal_uLong nShift = ( nXIndex & 7 ) ^ 7;
519 if ( nShift == 7)
520 *pDest = (sal_uInt8)(mpAccess->GetPixel( nY, nX ) << nShift);
520 *pDest = mpAccess->GetPixelIndex( nY, nX ) << nShift;
521 else if ( nShift == 0 )
521 else if ( nShift == 0 )
522 *pDest++ |= (sal_uInt8) mpAccess->GetPixel( nY, nX ) << nShift;
522 *pDest++ |= mpAccess->GetPixelIndex( nY, nX ) << nShift;
523 else
523 else
524 *pDest |= (sal_uInt8) mpAccess->GetPixel( nY, nX ) << nShift;
524 *pDest |= mpAccess->GetPixelIndex( nY, nX ) << nShift;
525 }
526 if ( ( nXIndex & 7 ) != 0 ) pDest++; // byte is not completely used, so the
527 } // bufferpointer is to correct
528 break;
529
530 case( 4 ):
531 {
532 sal_uLong nX, nXIndex;
533 for ( nX = nXStart, nXIndex = 0; nX < mnWidth; nX+= nXAdd, nXIndex++ )
534 {
535 if( nXIndex & 1 )
525 }
526 if ( ( nXIndex & 7 ) != 0 ) pDest++; // byte is not completely used, so the
527 } // bufferpointer is to correct
528 break;
529
530 case( 4 ):
531 {
532 sal_uLong nX, nXIndex;
533 for ( nX = nXStart, nXIndex = 0; nX < mnWidth; nX+= nXAdd, nXIndex++ )
534 {
535 if( nXIndex & 1 )
536 *pDest++ |= (sal_uInt8) mpAccess->GetPixel( nY, nX );
536 *pDest++ |= mpAccess->GetPixelIndex( nY, nX );
537 else
537 else
538 *pDest = (sal_uInt8) mpAccess->GetPixel( nY, nX ) << 4;
538 *pDest = mpAccess->GetPixelIndex( nY, nX ) << 4;
539 }
540 if ( nXIndex & 1 ) pDest++;
541 }
542 break;
543
544 case( 8 ):
545 {
546 for ( sal_uLong nX = nXStart; nX < mnWidth; nX+=nXAdd )
539 }
540 if ( nXIndex & 1 ) pDest++;
541 }
542 break;
543
544 case( 8 ):
545 {
546 for ( sal_uLong nX = nXStart; nX < mnWidth; nX+=nXAdd )
547 *pDest++ = mpAccess->GetPixel( nY, nX );
547 *pDest++ = mpAccess->GetPixelIndex( nY, nX );
548 }
549 break;
550
551 default :
552 mbStatus = sal_False;
553 break;
554 }
555 }

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560 if ( mbTrueAlpha )
561 {
562 for ( sal_uLong nX = nXStart; nX < mnWidth; nX += nXAdd )
563 {
564 const BitmapColor& rColor = mpAccess->GetPixel( nY, nX );
565 *pDest++ = rColor.GetRed();
566 *pDest++ = rColor.GetGreen();
567 *pDest++ = rColor.GetBlue();
548 }
549 break;
550
551 default :
552 mbStatus = sal_False;
553 break;
554 }
555 }

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560 if ( mbTrueAlpha )
561 {
562 for ( sal_uLong nX = nXStart; nX < mnWidth; nX += nXAdd )
563 {
564 const BitmapColor& rColor = mpAccess->GetPixel( nY, nX );
565 *pDest++ = rColor.GetRed();
566 *pDest++ = rColor.GetGreen();
567 *pDest++ = rColor.GetBlue();
568 *pDest++ = 255 - mpMaskAccess->GetPixel( nY, nX );
568 *pDest++ = 255 - mpMaskAccess->GetPixelIndex( nY, nX );
569 }
570 }
571 else
572 {
573 const BitmapColor aTrans( mpMaskAccess->GetBestMatchingColor( Color( COL_WHITE ) ) );
574
575 for ( sal_uLong nX = nXStart; nX < mnWidth; nX+=nXAdd )
576 {

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570 }
571 else
572 {
573 const BitmapColor aTrans( mpMaskAccess->GetBestMatchingColor( Color( COL_WHITE ) ) );
574
575 for ( sal_uLong nX = nXStart; nX < mnWidth; nX+=nXAdd )
576 {

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