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diff --git a/canvas/source/vcl/impltools.cxx b/canvas/source/vcl/impltools.cxx
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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org. If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+// MARKER(update_precomp.py): autogen include statement, do not remove
+#include "precompiled_canvas.hxx"
+
+#include <canvas/debug.hxx>
+#include <tools/diagnose_ex.h>
+
+#include <rtl/math.hxx>
+#include <rtl/logfile.hxx>
+
+#include <com/sun/star/geometry/RealSize2D.hpp>
+#include <com/sun/star/geometry/RealPoint2D.hpp>
+#include <com/sun/star/geometry/RealRectangle2D.hpp>
+#include <com/sun/star/rendering/RenderState.hpp>
+#include <com/sun/star/rendering/XCanvas.hpp>
+#include <com/sun/star/rendering/XBitmap.hpp>
+#include <com/sun/star/rendering/XPolyPolygon2D.hpp>
+#include <com/sun/star/geometry/RealBezierSegment2D.hpp>
+#include <com/sun/star/rendering/XIntegerBitmap.hpp>
+
+#include <vcl/salbtype.hxx>
+#include <vcl/bmpacc.hxx>
+#include <vcl/bitmapex.hxx>
+#include <vcl/metric.hxx>
+#include <vcl/canvastools.hxx>
+
+#include <basegfx/point/b2dpoint.hxx>
+#include <basegfx/tuple/b2dtuple.hxx>
+#include <basegfx/polygon/b2dpolygontools.hxx>
+#include <basegfx/range/b2drectangle.hxx>
+#include <basegfx/matrix/b2dhommatrix.hxx>
+#include <basegfx/tools/canvastools.hxx>
+#include <basegfx/numeric/ftools.hxx>
+
+#include <canvas/canvastools.hxx>
+
+#include "impltools.hxx"
+#include "canvasbitmap.hxx"
+
+#include <numeric>
+
+
+using namespace ::com::sun::star;
+
+namespace vclcanvas
+{
+ namespace tools
+ {
+ ::BitmapEx bitmapExFromXBitmap( const uno::Reference< rendering::XBitmap >& xBitmap )
+ {
+ // TODO(F3): CanvasCustomSprite should also be tunnelled
+ // through (also implements XIntegerBitmap interface)
+ CanvasBitmap* pBitmapImpl = dynamic_cast< CanvasBitmap* >( xBitmap.get() );
+
+ if( pBitmapImpl )
+ {
+ return pBitmapImpl->getBitmap();
+ }
+ else
+ {
+ SpriteCanvas* pCanvasImpl = dynamic_cast< SpriteCanvas* >( xBitmap.get() );
+ if( pCanvasImpl && pCanvasImpl->getBackBuffer() )
+ {
+ // TODO(F3): mind the plain Canvas impl. Consolidate with CWS canvas05
+ const ::OutputDevice& rDev( pCanvasImpl->getBackBuffer()->getOutDev() );
+ const ::Point aEmptyPoint;
+ return rDev.GetBitmapEx( aEmptyPoint,
+ rDev.GetOutputSizePixel() );
+ }
+
+ // TODO(F2): add support for floating point bitmap formats
+ uno::Reference< rendering::XIntegerReadOnlyBitmap > xIntBmp(
+ xBitmap, uno::UNO_QUERY_THROW );
+
+ ::BitmapEx aBmpEx = ::vcl::unotools::bitmapExFromXBitmap( xIntBmp );
+ if( !!aBmpEx )
+ return aBmpEx;
+
+ // TODO(F1): extract pixel from XBitmap interface
+ ENSURE_OR_THROW( false,
+ "bitmapExFromXBitmap(): could not extract bitmap" );
+ }
+
+ return ::BitmapEx();
+ }
+
+ bool setupFontTransform( ::Point& o_rPoint,
+ ::Font& io_rVCLFont,
+ const rendering::ViewState& rViewState,
+ const rendering::RenderState& rRenderState,
+ ::OutputDevice& rOutDev )
+ {
+ ::basegfx::B2DHomMatrix aMatrix;
+
+ ::canvas::tools::mergeViewAndRenderTransform(aMatrix,
+ rViewState,
+ rRenderState);
+
+ ::basegfx::B2DTuple aScale;
+ ::basegfx::B2DTuple aTranslate;
+ double nRotate, nShearX;
+
+ aMatrix.decompose( aScale, aTranslate, nRotate, nShearX );
+
+ // #i72417# detecting the 180 degree rotation case manually here.
+ if( aScale.getX() < 0.0 &&
+ aScale.getY() < 0.0 &&
+ basegfx::fTools::equalZero(nRotate) )
+ {
+ aScale *= -1.0;
+ nRotate += M_PI;
+ }
+
+ // query font metric _before_ tampering with width and height
+ if( !::rtl::math::approxEqual(aScale.getX(), aScale.getY()) )
+ {
+ // retrieve true font width
+ const sal_Int32 nFontWidth( rOutDev.GetFontMetric( io_rVCLFont ).GetWidth() );
+
+ const sal_Int32 nScaledFontWidth( ::basegfx::fround(nFontWidth * aScale.getX()) );
+
+ if( !nScaledFontWidth )
+ {
+ // scale is smaller than one pixel - disable text
+ // output altogether
+ return false;
+ }
+
+ io_rVCLFont.SetWidth( nScaledFontWidth );
+ }
+
+ if( !::rtl::math::approxEqual(aScale.getY(), 1.0) )
+ {
+ const sal_Int32 nFontHeight( io_rVCLFont.GetHeight() );
+ io_rVCLFont.SetHeight( ::basegfx::fround(nFontHeight * aScale.getY()) );
+ }
+
+ io_rVCLFont.SetOrientation( static_cast< short >( ::basegfx::fround(-fmod(nRotate, 2*M_PI)*(1800.0/M_PI)) ) );
+
+ // TODO(F2): Missing functionality in VCL: shearing
+ o_rPoint.X() = ::basegfx::fround(aTranslate.getX());
+ o_rPoint.Y() = ::basegfx::fround(aTranslate.getY());
+
+ return true;
+ }
+
+ bool isRectangle( const PolyPolygon& rPolyPoly )
+ {
+ // exclude some cheap cases first
+ if( rPolyPoly.Count() != 1 )
+ return false;
+
+ const ::Polygon& rPoly( rPolyPoly[0] );
+
+ USHORT nCount( rPoly.GetSize() );
+ if( nCount < 4 )
+ return false;
+
+ // delegate to basegfx
+ return ::basegfx::tools::isRectangle( rPoly.getB2DPolygon() );
+ }
+
+
+ // VCL-Canvas related
+ //---------------------------------------------------------------------
+
+ ::Point mapRealPoint2D( const geometry::RealPoint2D& rPoint,
+ const rendering::ViewState& rViewState,
+ const rendering::RenderState& rRenderState )
+ {
+ ::basegfx::B2DPoint aPoint( ::basegfx::unotools::b2DPointFromRealPoint2D(rPoint) );
+
+ ::basegfx::B2DHomMatrix aMatrix;
+ aPoint *= ::canvas::tools::mergeViewAndRenderTransform(aMatrix,
+ rViewState,
+ rRenderState);
+
+ return ::vcl::unotools::pointFromB2DPoint( aPoint );
+ }
+
+ ::PolyPolygon mapPolyPolygon( const ::basegfx::B2DPolyPolygon& rPoly,
+ const rendering::ViewState& rViewState,
+ const rendering::RenderState& rRenderState )
+ {
+ ::basegfx::B2DHomMatrix aMatrix;
+ ::canvas::tools::mergeViewAndRenderTransform(aMatrix,
+ rViewState,
+ rRenderState);
+
+ ::basegfx::B2DPolyPolygon aTemp( rPoly );
+
+ aTemp.transform( aMatrix );
+
+ return ::PolyPolygon( aTemp );
+ }
+
+ ::BitmapEx transformBitmap( const BitmapEx& rBitmap,
+ const ::basegfx::B2DHomMatrix& rTransform,
+ const uno::Sequence< double >& rDeviceColor,
+ ModulationMode eModulationMode )
+ {
+ RTL_LOGFILE_CONTEXT( aLog, "::vclcanvas::tools::transformBitmap()" );
+ RTL_LOGFILE_CONTEXT_TRACE1( aLog, "::vclcanvas::tools::transformBitmap: 0x%X", &rBitmap );
+
+ // calc transformation and size of bitmap to be
+ // generated. Note, that the translational components are
+ // deleted from the transformation; this can be handled by
+ // an offset when painting the bitmap
+ const Size aBmpSize( rBitmap.GetSizePixel() );
+ ::basegfx::B2DRectangle aDestRect;
+
+ bool bCopyBack( false );
+
+ // calc effective transformation for bitmap
+ const ::basegfx::B2DRectangle aSrcRect( 0, 0,
+ aBmpSize.Width(),
+ aBmpSize.Height() );
+ ::canvas::tools::calcTransformedRectBounds( aDestRect,
+ aSrcRect,
+ rTransform );
+
+ // re-center bitmap, such that it's left, top border is
+ // aligned with (0,0). The method takes the given
+ // rectangle, and calculates a transformation that maps
+ // this rectangle unscaled to the origin.
+ ::basegfx::B2DHomMatrix aLocalTransform;
+ ::canvas::tools::calcRectToOriginTransform( aLocalTransform,
+ aSrcRect,
+ rTransform );
+
+ const bool bModulateColors( eModulationMode == MODULATE_WITH_DEVICECOLOR &&
+ rDeviceColor.getLength() > 2 );
+ const double nRedModulation( bModulateColors ? rDeviceColor[0] : 1.0 );
+ const double nGreenModulation( bModulateColors ? rDeviceColor[1] : 1.0 );
+ const double nBlueModulation( bModulateColors ? rDeviceColor[2] : 1.0 );
+ const double nAlphaModulation( bModulateColors && rDeviceColor.getLength() > 3 ?
+ rDeviceColor[3] : 1.0 );
+
+ Bitmap aSrcBitmap( rBitmap.GetBitmap() );
+ Bitmap aSrcAlpha;
+
+ // differentiate mask and alpha channel (on-off
+ // vs. multi-level transparency)
+ if( rBitmap.IsTransparent() )
+ {
+ if( rBitmap.IsAlpha() )
+ aSrcAlpha = rBitmap.GetAlpha().GetBitmap();
+ else
+ aSrcAlpha = rBitmap.GetMask();
+ }
+
+ ScopedBitmapReadAccess pReadAccess( aSrcBitmap.AcquireReadAccess(),
+ aSrcBitmap );
+ ScopedBitmapReadAccess pAlphaReadAccess( rBitmap.IsTransparent() ?
+ aSrcAlpha.AcquireReadAccess() :
+ (BitmapReadAccess*)NULL,
+ aSrcAlpha );
+
+ if( pReadAccess.get() == NULL ||
+ (pAlphaReadAccess.get() == NULL && rBitmap.IsTransparent()) )
+ {
+ // TODO(E2): Error handling!
+ ENSURE_OR_THROW( false,
+ "transformBitmap(): could not access source bitmap" );
+ }
+
+ // mapping table, to translate pAlphaReadAccess' pixel
+ // values into destination alpha values (needed e.g. for
+ // paletted 1-bit masks).
+ sal_uInt8 aAlphaMap[256];
+
+ if( rBitmap.IsTransparent() )
+ {
+ if( rBitmap.IsAlpha() )
+ {
+ // source already has alpha channel - 1:1 mapping,
+ // i.e. aAlphaMap[0]=0,...,aAlphaMap[255]=255.
+ ::std::iota( aAlphaMap, &aAlphaMap[256], 0 );
+ }
+ else
+ {
+ // mask transparency - determine used palette colors
+ const BitmapColor& rCol0( pAlphaReadAccess->GetPaletteColor( 0 ) );
+ const BitmapColor& rCol1( pAlphaReadAccess->GetPaletteColor( 1 ) );
+
+ // shortcut for true luminance calculation
+ // (assumes that palette is grey-level)
+ aAlphaMap[0] = rCol0.GetRed();
+ aAlphaMap[1] = rCol1.GetRed();
+ }
+ }
+ // else: mapping table is not used
+
+ const Size aDestBmpSize( ::basegfx::fround( aDestRect.getWidth() ),
+ ::basegfx::fround( aDestRect.getHeight() ) );
+
+ if( aDestBmpSize.Width() == 0 || aDestBmpSize.Height() == 0 )
+ return BitmapEx();
+
+ Bitmap aDstBitmap( aDestBmpSize, aSrcBitmap.GetBitCount(), &pReadAccess->GetPalette() );
+ Bitmap aDstAlpha( AlphaMask( aDestBmpSize ).GetBitmap() );
+
+ {
+ // just to be on the safe side: let the
+ // ScopedAccessors get destructed before
+ // copy-constructing the resulting bitmap. This will
+ // rule out the possibility that cached accessor data
+ // is not yet written back.
+ ScopedBitmapWriteAccess pWriteAccess( aDstBitmap.AcquireWriteAccess(),
+ aDstBitmap );
+ ScopedBitmapWriteAccess pAlphaWriteAccess( aDstAlpha.AcquireWriteAccess(),
+ aDstAlpha );
+
+
+ if( pWriteAccess.get() != NULL &&
+ pAlphaWriteAccess.get() != NULL &&
+ rTransform.isInvertible() )
+ {
+ // we're doing inverse mapping here, i.e. mapping
+ // points from the destination bitmap back to the
+ // source
+ ::basegfx::B2DHomMatrix aTransform( aLocalTransform );
+ aTransform.invert();
+
+ // for the time being, always read as ARGB
+ for( int y=0; y<aDestBmpSize.Height(); ++y )
+ {
+ if( bModulateColors )
+ {
+ // TODO(P2): Have different branches for
+ // alpha-only modulation (color
+ // modulations eq. 1.0)
+
+ // modulate all color channels with given
+ // values
+
+ // differentiate mask and alpha channel (on-off
+ // vs. multi-level transparency)
+ if( rBitmap.IsTransparent() )
+ {
+ // Handling alpha and mask just the same...
+ for( int x=0; x<aDestBmpSize.Width(); ++x )
+ {
+ ::basegfx::B2DPoint aPoint(x,y);
+ aPoint *= aTransform;
+
+ const int nSrcX( ::basegfx::fround( aPoint.getX() ) );
+ const int nSrcY( ::basegfx::fround( aPoint.getY() ) );
+ if( nSrcX < 0 || nSrcX >= aBmpSize.Width() ||
+ nSrcY < 0 || nSrcY >= aBmpSize.Height() )
+ {
+ pAlphaWriteAccess->SetPixel( y, x, BitmapColor(255) );
+ }
+ else
+ {
+ // modulate alpha with
+ // nAlphaModulation. This is a
+ // little bit verbose, formula
+ // is 255 - (255-pixAlpha)*nAlphaModulation
+ // (invert 'alpha' pixel value,
+ // to get the standard alpha
+ // channel behaviour)
+ pAlphaWriteAccess->SetPixel( y, x,
+ BitmapColor(
+ 255U -
+ static_cast<BYTE>(
+ nAlphaModulation*
+ (255U
+ - aAlphaMap[ pAlphaReadAccess->GetPixel(
+ nSrcY,
+ nSrcX ).GetIndex() ] ) + .5 ) ) );
+
+ BitmapColor aColor( pReadAccess->GetPixel( nSrcY,
+ nSrcX ) );
+
+ aColor.SetRed(
+ static_cast<BYTE>(
+ nRedModulation *
+ aColor.GetRed() + .5 ));
+ aColor.SetGreen(
+ static_cast<BYTE>(
+ nGreenModulation *
+ aColor.GetGreen() + .5 ));
+ aColor.SetBlue(
+ static_cast<BYTE>(
+ nBlueModulation *
+ aColor.GetBlue() + .5 ));
+
+ pWriteAccess->SetPixel( y, x,
+ aColor );
+ }
+ }
+ }
+ else
+ {
+ for( int x=0; x<aDestBmpSize.Width(); ++x )
+ {
+ ::basegfx::B2DPoint aPoint(x,y);
+ aPoint *= aTransform;
+
+ const int nSrcX( ::basegfx::fround( aPoint.getX() ) );
+ const int nSrcY( ::basegfx::fround( aPoint.getY() ) );
+ if( nSrcX < 0 || nSrcX >= aBmpSize.Width() ||
+ nSrcY < 0 || nSrcY >= aBmpSize.Height() )
+ {
+ pAlphaWriteAccess->SetPixel( y, x, BitmapColor(255) );
+ }
+ else
+ {
+ // modulate alpha with
+ // nAlphaModulation. This is a
+ // little bit verbose, formula
+ // is 255 - 255*nAlphaModulation
+ // (invert 'alpha' pixel value,
+ // to get the standard alpha
+ // channel behaviour)
+ pAlphaWriteAccess->SetPixel( y, x,
+ BitmapColor(
+ 255U -
+ static_cast<BYTE>(
+ nAlphaModulation*255.0
+ + .5 ) ) );
+
+ BitmapColor aColor( pReadAccess->GetPixel( nSrcY,
+ nSrcX ) );
+
+ aColor.SetRed(
+ static_cast<BYTE>(
+ nRedModulation *
+ aColor.GetRed() + .5 ));
+ aColor.SetGreen(
+ static_cast<BYTE>(
+ nGreenModulation *
+ aColor.GetGreen() + .5 ));
+ aColor.SetBlue(
+ static_cast<BYTE>(
+ nBlueModulation *
+ aColor.GetBlue() + .5 ));
+
+ pWriteAccess->SetPixel( y, x,
+ aColor );
+ }
+ }
+ }
+ }
+ else
+ {
+ // differentiate mask and alpha channel (on-off
+ // vs. multi-level transparency)
+ if( rBitmap.IsTransparent() )
+ {
+ // Handling alpha and mask just the same...
+ for( int x=0; x<aDestBmpSize.Width(); ++x )
+ {
+ ::basegfx::B2DPoint aPoint(x,y);
+ aPoint *= aTransform;
+
+ const int nSrcX( ::basegfx::fround( aPoint.getX() ) );
+ const int nSrcY( ::basegfx::fround( aPoint.getY() ) );
+ if( nSrcX < 0 || nSrcX >= aBmpSize.Width() ||
+ nSrcY < 0 || nSrcY >= aBmpSize.Height() )
+ {
+ pAlphaWriteAccess->SetPixel( y, x, BitmapColor(255) );
+ }
+ else
+ {
+ pAlphaWriteAccess->SetPixel( y, x,
+ aAlphaMap[
+ pAlphaReadAccess->GetPixel( nSrcY,
+ nSrcX ) ] );
+
+ pWriteAccess->SetPixel( y, x, pReadAccess->GetPixel( nSrcY,
+ nSrcX ) );
+ }
+ }
+ }
+ else
+ {
+ for( int x=0; x<aDestBmpSize.Width(); ++x )
+ {
+ ::basegfx::B2DPoint aPoint(x,y);
+ aPoint *= aTransform;
+
+ const int nSrcX( ::basegfx::fround( aPoint.getX() ) );
+ const int nSrcY( ::basegfx::fround( aPoint.getY() ) );
+ if( nSrcX < 0 || nSrcX >= aBmpSize.Width() ||
+ nSrcY < 0 || nSrcY >= aBmpSize.Height() )
+ {
+ pAlphaWriteAccess->SetPixel( y, x, BitmapColor(255) );
+ }
+ else
+ {
+ pAlphaWriteAccess->SetPixel( y, x, BitmapColor(0) );
+ pWriteAccess->SetPixel( y, x, pReadAccess->GetPixel( nSrcY,
+ nSrcX ) );
+ }
+ }
+ }
+ }
+ }
+
+ bCopyBack = true;
+ }
+ else
+ {
+ // TODO(E2): Error handling!
+ ENSURE_OR_THROW( false,
+ "transformBitmap(): could not access bitmap" );
+ }
+ }
+
+ if( bCopyBack )
+ return BitmapEx( aDstBitmap, AlphaMask( aDstAlpha ) );
+ else
+ return BitmapEx();
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-18 09:40:38 +0000