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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include "main.hxx"
#include <vcl/BitmapTools.hxx>
#include <memory>
namespace {
Color BMCOL(sal_uInt32 _col) {
return Color( static_cast<sal_Int8>(_col >> 16 ), static_cast<sal_Int8>( _col >> 8 ), static_cast<sal_Int8>(_col) );
}
}
CGMBitmap::CGMBitmap( CGM& rCGM ) :
mpCGM ( &rCGM ),
pCGMBitmapDescriptor ( new CGMBitmapDescriptor )
{
ImplGetBitmap( *pCGMBitmapDescriptor );
};
CGMBitmap::~CGMBitmap()
{
}
namespace
{
bool isLegalBitsPerPixel(sal_uInt32 nBitsPerPixel)
{
switch (nBitsPerPixel)
{
case 1:
case 2:
case 4:
case 8:
case 24:
return true;
break;
default:
break;
}
return false;
}
}
void CGMBitmap::ImplGetBitmap( CGMBitmapDescriptor& rDesc )
{
rDesc.mbStatus = true;
if (!(ImplGetDimensions(rDesc) && rDesc.mpBuf && isLegalBitsPerPixel(rDesc.mnDstBitsPerPixel)))
return;
vcl::bitmap::RawBitmap aBitmap( Size( rDesc.mnX, rDesc.mnY ), 24 );
// the picture may either be read from left to right or right to left, from top to bottom ...
long nxCount = rDesc.mnX + 1; // +1 because we are using prefix decreasing
long nyCount = rDesc.mnY + 1;
long nx, ny, nxC;
switch ( rDesc.mnDstBitsPerPixel ) {
case 1 : {
std::vector<Color> palette(2);
if ( rDesc.mnLocalColorPrecision == 1 )
palette = ImplGeneratePalette( rDesc );
else {
palette[0] = BMCOL( mpCGM->pElement->nBackGroundColor );
palette[1] = ( mpCGM->pElement->nAspectSourceFlags & ASF_FILLINTERIORSTYLE )
? BMCOL( mpCGM->pElement->pFillBundle->GetColor() )
: BMCOL( mpCGM->pElement->aFillBundle.GetColor() );
};
for ( ny = 0; --nyCount ; ny++, rDesc.mpBuf += rDesc.mnScanSize ) {
nxC = nxCount;
for ( nx = 0; --nxC; nx++ ) {
// this is not fast, but a one bit/pixel format is rarely used
sal_uInt8 colorIndex = static_cast<sal_uInt8>( (*( rDesc.mpBuf + (nx >> 3)) >> ((nx & 7)^7))) & 1;
aBitmap.SetPixel(ny, nx, palette[colorIndex]);
}
}
}
break;
case 2 : {
auto palette = ImplGeneratePalette( rDesc );
for ( ny = 0; --nyCount; ny++, rDesc.mpBuf += rDesc.mnScanSize ) {
nxC = nxCount;
for ( nx = 0; --nxC; nx++ ) {
// this is not fast, but a two bits/pixel format is rarely used
aBitmap.SetPixel(ny, nx, palette[static_cast<sal_uInt8>( (*(rDesc.mpBuf + (nx >> 2)) >> (((nx & 3)^3) << 1))) & 3]);
}
}
}
break;
case 4 : {
auto palette = ImplGeneratePalette( rDesc );
for ( ny = 0; --nyCount; ny++, rDesc.mpBuf += rDesc.mnScanSize ) {
nxC = nxCount;
sal_uInt8* pTemp = rDesc.mpBuf;
for ( nx = 0; --nxC; nx++ ) {
sal_uInt8 nDat = *pTemp++;
aBitmap.SetPixel(ny, nx, palette[static_cast<sal_uInt8>(nDat >> 4)]);
if ( --nxC ) {
++nx;
aBitmap.SetPixel(ny, nx, palette[static_cast<sal_uInt8>(nDat & 15)]);
} else
break;
}
}
}
break;
case 8 : {
auto palette = ImplGeneratePalette( rDesc );
for ( ny = 0; --nyCount; ny++, rDesc.mpBuf += rDesc.mnScanSize ) {
sal_uInt8* pTemp = rDesc.mpBuf;
nxC = nxCount;
for ( nx = 0; --nxC; nx++ ) {
aBitmap.SetPixel(ny, nx, palette[*(pTemp++)]);
}
}
}
break;
case 24 : {
Color aBitmapColor;
for ( ny = 0; --nyCount; ny++, rDesc.mpBuf += rDesc.mnScanSize ) {
sal_uInt8* pTemp = rDesc.mpBuf;
nxC = nxCount;
for ( nx = 0; --nxC; nx++ ) {
aBitmapColor.SetRed( *pTemp++ );
aBitmapColor.SetGreen( *pTemp++ );
aBitmapColor.SetBlue( *pTemp++ );
aBitmap.SetPixel(ny, nx, aBitmapColor);
}
}
}
break;
}
double nX = rDesc.mnR.X - rDesc.mnQ.X;
double nY = rDesc.mnR.Y - rDesc.mnQ.Y;
rDesc.mndy = sqrt( nX * nX + nY * nY );
nX = rDesc.mnR.X - rDesc.mnP.X;
nY = rDesc.mnR.Y - rDesc.mnP.Y;
rDesc.mndx = sqrt( nX * nX + nY * nY );
nX = rDesc.mnR.X - rDesc.mnP.X;
nY = rDesc.mnR.Y - rDesc.mnP.Y;
double fSqrt = sqrt(nX * nX + nY * nY);
rDesc.mnOrientation = fSqrt != 0.0 ? (acos(nX / fSqrt) * 57.29577951308) : 0.0;
if ( nY > 0 )
rDesc.mnOrientation = 360 - rDesc.mnOrientation;
nX = rDesc.mnQ.X - rDesc.mnR.X;
nY = rDesc.mnQ.Y - rDesc.mnR.Y;
double fAngle = 0.01745329251994 * ( 360 - rDesc.mnOrientation );
double fSin = sin(fAngle);
double fCos = cos(fAngle);
nX = fCos * nX + fSin * nY;
nY = -( fSin * nX - fCos * nY );
fSqrt = sqrt(nX * nX + nY * nY);
fAngle = fSqrt != 0.0 ? (acos(nX / fSqrt) * 57.29577951308) : 0.0;
if ( nY > 0 )
fAngle = 360 - fAngle;
if ( fAngle > 180 ) { // is the picture build upwards or downwards ?
rDesc.mnOrigin = rDesc.mnP;
} else {
rDesc.mbVMirror = true;
rDesc.mnOrigin = rDesc.mnP;
rDesc.mnOrigin.X += rDesc.mnQ.X - rDesc.mnR.X;
rDesc.mnOrigin.Y += rDesc.mnQ.Y - rDesc.mnR.Y;
}
if ( rDesc.mbStatus )
rDesc.mxBitmap = vcl::bitmap::CreateFromData(std::move(aBitmap));
}
std::vector<Color> CGMBitmap::ImplGeneratePalette( CGMBitmapDescriptor const & rDesc )
{
sal_uInt16 nColors = sal::static_int_cast< sal_uInt16 >(
1 << rDesc.mnDstBitsPerPixel);
std::vector<Color> palette( nColors );
for ( sal_uInt16 i = 0; i < nColors; i++ )
{
palette[i] = BMCOL( mpCGM->pElement->aLatestColorTable[ i ] );
}
return palette;
}
bool CGMBitmap::ImplGetDimensions( CGMBitmapDescriptor& rDesc )
{
mpCGM->ImplGetPoint( rDesc.mnP ); // parallelogram p < - > r
mpCGM->ImplGetPoint( rDesc.mnQ ); // |
mpCGM->ImplGetPoint( rDesc.mnR ); // q
sal_uInt32 nPrecision = mpCGM->pElement->nIntegerPrecision;
rDesc.mnX = mpCGM->ImplGetUI( nPrecision );
rDesc.mnY = mpCGM->ImplGetUI( nPrecision );
rDesc.mnLocalColorPrecision = mpCGM->ImplGetI( nPrecision );
rDesc.mnScanSize = 0;
switch( rDesc.mnLocalColorPrecision )
{
case long(0x80000001) : // monochrome ( bit = 0->backgroundcolor )
case 0 : // bit = 1->fillcolor
rDesc.mnDstBitsPerPixel = 1;
break;
case 1 : // 2 color indexed ( monochrome )
case -1 :
rDesc.mnDstBitsPerPixel = 1;
break;
case 2 : // 4 color indexed
case -2 :
rDesc.mnDstBitsPerPixel = 2;
break;
case 4 : // 16 color indexed
case -4 :
rDesc.mnDstBitsPerPixel = 4;
break;
case 8 : // 256 color indexed
case -8 :
rDesc.mnDstBitsPerPixel = 8;
rDesc.mnScanSize = rDesc.mnX;
break;
case 16 : // NS
case -16 :
rDesc.mbStatus = false;
break;
case 24 : // 24 bit directColor ( 8 bits each component )
case -24 :
rDesc.mnDstBitsPerPixel = 24;
break;
case 32 : // NS
case -32 :
rDesc.mbStatus = false;
break;
}
// mnCompressionMode == 0 : CCOMP_RUNLENGTH
// == 1 : CCOMP_PACKED ( no compression. each row starts on a 4 byte boundary )
if ( ( rDesc.mnCompressionMode = mpCGM->ImplGetUI16() ) != 1 )
rDesc.mbStatus = false;
if ( !( rDesc.mnX || rDesc.mnY ) )
rDesc.mbStatus = false;
sal_uInt32 nHeaderSize = 2 + 3 * nPrecision + 3 * mpCGM->ImplGetPointSize();
rDesc.mnScanSize = ( ( rDesc.mnX * rDesc.mnDstBitsPerPixel + 7 ) >> 3 );
sal_uInt32 nScanSize;
nScanSize = rDesc.mnScanSize;
if ( ( nScanSize * rDesc.mnY + nHeaderSize ) != mpCGM->mnElementSize ) // try a scansize without dw alignment
{
nScanSize = ( rDesc.mnScanSize + 1 ) & ~1;
if ( ( nScanSize * rDesc.mnY + nHeaderSize ) != mpCGM->mnElementSize ) // then we'll try word alignment
{
nScanSize = ( rDesc.mnScanSize + 3 ) & ~3;
if ( ( nScanSize * rDesc.mnY + nHeaderSize ) != mpCGM->mnElementSize ) // and last we'll try dword alignment
{
nScanSize = ( rDesc.mnScanSize + 1 ) & ~1; // and LAST BUT NOT LEAST we'll try word alignment without aligning the last line
if ( ( nScanSize * ( rDesc.mnY - 1 ) + rDesc.mnScanSize + nHeaderSize ) != mpCGM->mnElementSize )
{
nScanSize = ( rDesc.mnScanSize + 3 ) & ~3;
if ( ( nScanSize * ( rDesc.mnY - 1 ) + rDesc.mnScanSize + nHeaderSize ) != mpCGM->mnElementSize )
{
mpCGM->mnParaSize = 0; // this format is corrupt
rDesc.mbStatus = false;
}
}
}
}
}
rDesc.mnScanSize = nScanSize;
if ( rDesc.mbStatus )
{
rDesc.mpBuf = mpCGM->mpSource + mpCGM->mnParaSize; // mpBuf now points to the first scanline
mpCGM->mnParaSize += rDesc.mnScanSize * rDesc.mnY;
}
return rDesc.mbStatus;
}
void CGMBitmap::ImplInsert( CGMBitmapDescriptor const & rSource, CGMBitmapDescriptor& rDest )
{
if ( ( rSource.mnR.Y == rDest.mnQ.Y ) && ( rSource.mnR.X == rDest.mnQ.X ) )
{ // Insert on Bottom
if ( mpCGM->mnVDCYmul == -1 )
rDest.mnOrigin = rSource.mnOrigin; // new origin
rDest.mxBitmap.Expand( 0, rSource.mnY );
rDest.mxBitmap.CopyPixel( tools::Rectangle( Point( 0, rDest.mnY ), Size( rSource.mnX, rSource.mnY ) ),
tools::Rectangle( Point( 0, 0 ), Size( rSource.mnX, rSource.mnY ) ), &rSource.mxBitmap );
FloatPoint aFloatPoint;
aFloatPoint.X = rSource.mnQ.X - rSource.mnR.X;
aFloatPoint.Y = rSource.mnQ.Y - rSource.mnR.Y;
rDest.mnQ.X += aFloatPoint.X;
rDest.mnQ.Y += aFloatPoint.Y;
rDest.mnP = rSource.mnP;
rDest.mnR = rSource.mnR;
}
else
{ // Insert on Top
if ( mpCGM->mnVDCYmul == 1 )
rDest.mnOrigin = rSource.mnOrigin; // new origin
rDest.mxBitmap.Expand( 0, rSource.mnY );
rDest.mxBitmap.CopyPixel( tools::Rectangle( Point( 0, rDest.mnY ), Size( rSource.mnX, rSource.mnY ) ),
tools::Rectangle( Point( 0, 0 ), Size( rSource.mnX, rSource.mnY ) ), &rSource.mxBitmap );
rDest.mnP = rSource.mnP;
rDest.mnR = rSource.mnR;
}
rDest.mnY += rSource.mnY;
rDest.mndy += rSource.mndy;
};
std::unique_ptr<CGMBitmap> CGMBitmap::GetNext()
{
std::unique_ptr<CGMBitmap> xCGMTempBitmap;
if (!!pCGMBitmapDescriptor->mxBitmap && pCGMBitmapDescriptor->mbStatus)
{
xCGMTempBitmap.reset(new CGMBitmap(*mpCGM));
if ( ( static_cast<long>(xCGMTempBitmap->pCGMBitmapDescriptor->mnOrientation) == static_cast<long>(pCGMBitmapDescriptor->mnOrientation) ) &&
( ( ( xCGMTempBitmap->pCGMBitmapDescriptor->mnR.X == pCGMBitmapDescriptor->mnQ.X ) &&
( xCGMTempBitmap->pCGMBitmapDescriptor->mnR.Y == pCGMBitmapDescriptor->mnQ.Y ) ) ||
( ( xCGMTempBitmap->pCGMBitmapDescriptor->mnQ.X == pCGMBitmapDescriptor->mnR.X ) &&
( xCGMTempBitmap->pCGMBitmapDescriptor->mnQ.Y == pCGMBitmapDescriptor->mnR.Y ) ) ) )
{
ImplInsert( *(xCGMTempBitmap->pCGMBitmapDescriptor), *(pCGMBitmapDescriptor) );
xCGMTempBitmap.reset();
return xCGMTempBitmap;
}
pCGMBitmapDescriptor.swap(xCGMTempBitmap->pCGMBitmapDescriptor);
}
return xCGMTempBitmap;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
