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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 <cassert>
+
+#include <sal/types.h>
+#include <tools/helpers.hxx>
+#include <rtl/math.hxx>
+
+#include <memory>
+
+#include <vcl/bitmapaccess.hxx>
+#include <vcl/gdimtf.hxx>
+#include <vcl/metaact.hxx>
+#include <vcl/outdev.hxx>
+#include <vcl/settings.hxx>
+#include <vcl/virdev.hxx>
+
+#include <outdata.hxx>
+#include <salgdi.hxx>
+#include <bitmapwriteaccess.hxx>
+
+namespace
+{
+ /**
+ * Perform a safe approximation of a polygon from double-precision
+ * coordinates to integer coordinates, to ensure that it has at least 2
+ * pixels in both X and Y directions.
+ */
+ tools::Polygon toPolygon( const basegfx::B2DPolygon& rPoly )
+ {
+ basegfx::B2DRange aRange = rPoly.getB2DRange();
+ double fW = aRange.getWidth(), fH = aRange.getHeight();
+ if (0.0 < fW && 0.0 < fH && (fW <= 1.0 || fH <= 1.0))
+ {
+ // This polygon not empty but is too small to display. Approximate it
+ // with a rectangle large enough to be displayed.
+ double nX = aRange.getMinX(), nY = aRange.getMinY();
+ double nW = std::max<double>(1.0, rtl::math::round(fW));
+ double nH = std::max<double>(1.0, rtl::math::round(fH));
+
+ tools::Polygon aTarget;
+ aTarget.Insert(0, Point(nX, nY));
+ aTarget.Insert(1, Point(nX+nW, nY));
+ aTarget.Insert(2, Point(nX+nW, nY+nH));
+ aTarget.Insert(3, Point(nX, nY+nH));
+ aTarget.Insert(4, Point(nX, nY));
+ return aTarget;
+ }
+ return tools::Polygon(rPoly);
+ }
+
+ tools::PolyPolygon toPolyPolygon( const basegfx::B2DPolyPolygon& rPolyPoly )
+ {
+ tools::PolyPolygon aTarget;
+ for (auto const& rB2DPolygon : rPolyPoly)
+ aTarget.Insert(toPolygon(rB2DPolygon));
+
+ return aTarget;
+ }
+}
+
+Color OutputDevice::ImplDrawModeToColor( const Color& rColor ) const
+{
+ Color aColor( rColor );
+ DrawModeFlags nDrawMode = GetDrawMode();
+
+ if( nDrawMode & ( DrawModeFlags::BlackLine | DrawModeFlags::WhiteLine |
+ DrawModeFlags::GrayLine |
+ DrawModeFlags::SettingsLine ) )
+ {
+ if( !ImplIsColorTransparent( aColor ) )
+ {
+ if( nDrawMode & DrawModeFlags::BlackLine )
+ {
+ aColor = COL_BLACK;
+ }
+ else if( nDrawMode & DrawModeFlags::WhiteLine )
+ {
+ aColor = COL_WHITE;
+ }
+ else if( nDrawMode & DrawModeFlags::GrayLine )
+ {
+ const sal_uInt8 cLum = aColor.GetLuminance();
+ aColor = Color( cLum, cLum, cLum );
+ }
+ else if( nDrawMode & DrawModeFlags::SettingsLine )
+ {
+ aColor = GetSettings().GetStyleSettings().GetFontColor();
+ }
+ }
+ }
+ return aColor;
+}
+
+void OutputDevice::ImplPrintTransparent( const Bitmap& rBmp, const Bitmap& rMask,
+ const Point& rDestPt, const Size& rDestSize,
+ const Point& rSrcPtPixel, const Size& rSrcSizePixel )
+{
+ Point aDestPt( LogicToPixel( rDestPt ) );
+ Size aDestSz( LogicToPixel( rDestSize ) );
+ tools::Rectangle aSrcRect( rSrcPtPixel, rSrcSizePixel );
+
+ aSrcRect.Justify();
+
+ if( rBmp.IsEmpty() || !aSrcRect.GetWidth() || !aSrcRect.GetHeight() || !aDestSz.Width() || !aDestSz.Height() )
+ return;
+
+ Bitmap aPaint( rBmp ), aMask( rMask );
+ BmpMirrorFlags nMirrFlags = BmpMirrorFlags::NONE;
+
+ if( aMask.GetBitCount() > 1 )
+ aMask.Convert( BmpConversion::N1BitThreshold );
+
+ // mirrored horizontically
+ if( aDestSz.Width() < 0 )
+ {
+ aDestSz.setWidth( -aDestSz.Width() );
+ aDestPt.AdjustX( -( aDestSz.Width() - 1 ) );
+ nMirrFlags |= BmpMirrorFlags::Horizontal;
+ }
+
+ // mirrored vertically
+ if( aDestSz.Height() < 0 )
+ {
+ aDestSz.setHeight( -aDestSz.Height() );
+ aDestPt.AdjustY( -( aDestSz.Height() - 1 ) );
+ nMirrFlags |= BmpMirrorFlags::Vertical;
+ }
+
+ // source cropped?
+ if( aSrcRect != tools::Rectangle( Point(), aPaint.GetSizePixel() ) )
+ {
+ aPaint.Crop( aSrcRect );
+ aMask.Crop( aSrcRect );
+ }
+
+ // destination mirrored
+ if( nMirrFlags != BmpMirrorFlags::NONE )
+ {
+ aPaint.Mirror( nMirrFlags );
+ aMask.Mirror( nMirrFlags );
+ }
+
+ // we always want to have a mask
+ if( aMask.IsEmpty() )
+ {
+ aMask = Bitmap( aSrcRect.GetSize(), 1 );
+ aMask.Erase( COL_BLACK );
+ }
+
+ // do painting
+ const long nSrcWidth = aSrcRect.GetWidth(), nSrcHeight = aSrcRect.GetHeight();
+ long nX, nY; // , nWorkX, nWorkY, nWorkWidth, nWorkHeight;
+ std::unique_ptr<long[]> pMapX(new long[ nSrcWidth + 1 ]);
+ std::unique_ptr<long[]> pMapY(new long[ nSrcHeight + 1 ]);
+ const bool bOldMap = mbMap;
+
+ mbMap = false;
+
+ // create forward mapping tables
+ for( nX = 0; nX <= nSrcWidth; nX++ )
+ pMapX[ nX ] = aDestPt.X() + FRound( static_cast<double>(aDestSz.Width()) * nX / nSrcWidth );
+
+ for( nY = 0; nY <= nSrcHeight; nY++ )
+ pMapY[ nY ] = aDestPt.Y() + FRound( static_cast<double>(aDestSz.Height()) * nY / nSrcHeight );
+
+ // walk through all rectangles of mask
+ const vcl::Region aWorkRgn(aMask.CreateRegion(COL_BLACK, tools::Rectangle(Point(), aMask.GetSizePixel())));
+ RectangleVector aRectangles;
+ aWorkRgn.GetRegionRectangles(aRectangles);
+
+ for (auto const& rectangle : aRectangles)
+ {
+ const Point aMapPt(pMapX[rectangle.Left()], pMapY[rectangle.Top()]);
+ const Size aMapSz( pMapX[rectangle.Right() + 1] - aMapPt.X(), // pMapX[L + W] -> L + ((R - L) + 1) -> R + 1
+ pMapY[rectangle.Bottom() + 1] - aMapPt.Y()); // same for Y
+ Bitmap aBandBmp(aPaint);
+
+ aBandBmp.Crop(rectangle);
+ DrawBitmap(aMapPt, aMapSz, Point(), aBandBmp.GetSizePixel(), aBandBmp);
+ }
+
+ mbMap = bOldMap;
+
+}
+
+// Caution: This method is nearly the same as
+// void OutputDevice::DrawPolyPolygon( const basegfx::B2DPolyPolygon& rB2DPolyPoly )
+// so when changes are made here do not forget to make changes there, too
+
+void OutputDevice::DrawTransparent(
+ const basegfx::B2DHomMatrix& rObjectTransform,
+ const basegfx::B2DPolyPolygon& rB2DPolyPoly,
+ double fTransparency)
+{
+ assert(!is_double_buffered_window());
+
+ // AW: Do NOT paint empty PolyPolygons
+ if(!rB2DPolyPoly.count())
+ return;
+
+ // we need a graphics
+ if( !mpGraphics && !AcquireGraphics() )
+ return;
+
+ if( mbInitClipRegion )
+ InitClipRegion();
+
+ if( mbOutputClipped )
+ return;
+
+ if( mbInitLineColor )
+ InitLineColor();
+
+ if( mbInitFillColor )
+ InitFillColor();
+
+ if((mnAntialiasing & AntialiasingFlags::EnableB2dDraw) &&
+ mpGraphics->supportsOperation(OutDevSupportType::B2DDraw) &&
+ (RasterOp::OverPaint == GetRasterOp()) )
+ {
+ // b2dpolygon support not implemented yet on non-UNX platforms
+ basegfx::B2DPolyPolygon aB2DPolyPolygon(rB2DPolyPoly);
+
+ // ensure it is closed
+ if(!aB2DPolyPolygon.isClosed())
+ {
+ // maybe assert, prevents buffering due to making a copy
+ aB2DPolyPolygon.setClosed( true );
+ }
+
+ // create ObjectToDevice transformation
+ const basegfx::B2DHomMatrix aFullTransform(ImplGetDeviceTransformation() * rObjectTransform);
+ // TODO: this must not drop transparency for mpAlphaVDev case, but instead use premultiplied
+ // aplha... but that requires using premultiplied alpha also for already drawn data
+ const double fAdjustedTransparency = mpAlphaVDev ? 0 : fTransparency;
+ bool bDrawnOk(true);
+
+ if( IsFillColor() )
+ {
+ bDrawnOk = mpGraphics->DrawPolyPolygon(
+ aFullTransform,
+ aB2DPolyPolygon,
+ fAdjustedTransparency,
+ this);
+ }
+
+ if( bDrawnOk && IsLineColor() )
+ {
+ const bool bPixelSnapHairline(mnAntialiasing & AntialiasingFlags::PixelSnapHairline);
+
+ for(auto const& rPolygon : aB2DPolyPolygon)
+ {
+ mpGraphics->DrawPolyLine(
+ aFullTransform,
+ rPolygon,
+ fAdjustedTransparency,
+ 0.0, // tdf#124848 hairline
+ nullptr, // MM01
+ basegfx::B2DLineJoin::NONE,
+ css::drawing::LineCap_BUTT,
+ basegfx::deg2rad(15.0), // not used with B2DLineJoin::NONE, but the correct default
+ bPixelSnapHairline,
+ this );
+ }
+ }
+
+ if( bDrawnOk )
+ {
+ if( mpMetaFile )
+ {
+ // tdf#119843 need transformed Polygon here
+ basegfx::B2DPolyPolygon aB2DPolyPoly(rB2DPolyPoly);
+ aB2DPolyPoly.transform(rObjectTransform);
+ mpMetaFile->AddAction(
+ new MetaTransparentAction(
+ tools::PolyPolygon(aB2DPolyPoly),
+ static_cast< sal_uInt16 >(fTransparency * 100.0)));
+ }
+
+ if (mpAlphaVDev)
+ mpAlphaVDev->DrawTransparent(rObjectTransform, rB2DPolyPoly, fTransparency);
+
+ return;
+ }
+ }
+
+ // fallback to old polygon drawing if needed
+ // tdf#119843 need transformed Polygon here
+ basegfx::B2DPolyPolygon aB2DPolyPoly(rB2DPolyPoly);
+ aB2DPolyPoly.transform(rObjectTransform);
+ DrawTransparent(
+ toPolyPolygon(aB2DPolyPoly),
+ static_cast<sal_uInt16>(fTransparency * 100.0));
+}
+
+void OutputDevice::DrawInvisiblePolygon( const tools::PolyPolygon& rPolyPoly )
+{
+ assert(!is_double_buffered_window());
+
+ // short circuit if the polygon border is invisible too
+ if( !mbLineColor )
+ return;
+
+ // we assume that the border is NOT to be drawn transparently???
+ Push( PushFlags::FILLCOLOR );
+ SetFillColor();
+ DrawPolyPolygon( rPolyPoly );
+ Pop();
+}
+
+bool OutputDevice::DrawTransparentNatively ( const tools::PolyPolygon& rPolyPoly,
+ sal_uInt16 nTransparencePercent )
+{
+ assert(!is_double_buffered_window());
+
+ bool bDrawn = false;
+
+ // debug helper:
+ static const char* pDisableNative = getenv( "SAL_DISABLE_NATIVE_ALPHA");
+
+ if( !pDisableNative &&
+ mpGraphics->supportsOperation( OutDevSupportType::B2DDraw )
+#if defined UNX && ! defined MACOSX && ! defined IOS
+ && GetBitCount() > 8
+#endif
+#ifdef _WIN32
+ // workaround bad dithering on remote displaying when using GDI+ with toolbar button highlighting
+ && !rPolyPoly.IsRect()
+#endif
+ )
+ {
+ // prepare the graphics device
+ if( mbInitClipRegion )
+ InitClipRegion();
+
+ if( mbOutputClipped )
+ return false;
+
+ if( mbInitLineColor )
+ InitLineColor();
+
+ if( mbInitFillColor )
+ InitFillColor();
+
+ // get the polygon in device coordinates
+ basegfx::B2DPolyPolygon aB2DPolyPolygon(rPolyPoly.getB2DPolyPolygon());
+ const basegfx::B2DHomMatrix aTransform(ImplGetDeviceTransformation());
+
+ const double fTransparency = 0.01 * nTransparencePercent;
+ if( mbFillColor )
+ {
+ // #i121591#
+ // CAUTION: Only non printing (pixel-renderer) VCL commands from OutputDevices
+ // should be used when printing. Normally this is avoided by the printer being
+ // non-AAed and thus e.g. on WIN GdiPlus calls are not used. It may be necessary
+ // to figure out a way of moving this code to its own function that is
+ // overridden by the Print class, which will mean we deliberately override the
+ // functionality and we use the fallback some lines below (which is not very good,
+ // though. For now, WinSalGraphics::drawPolyPolygon will detect printer usage and
+ // correct the wrong mapping (see there for details)
+ bDrawn = mpGraphics->DrawPolyPolygon(
+ aTransform,
+ aB2DPolyPolygon,
+ fTransparency,
+ this);
+ }
+
+ if( mbLineColor )
+ {
+ // disable the fill color for now
+ mpGraphics->SetFillColor();
+
+ // draw the border line
+ const bool bPixelSnapHairline(mnAntialiasing & AntialiasingFlags::PixelSnapHairline);
+
+ for(auto const& rPolygon : aB2DPolyPolygon)
+ {
+ bDrawn = mpGraphics->DrawPolyLine(
+ aTransform,
+ rPolygon,
+ fTransparency,
+ 0.0, // tdf#124848 hairline
+ nullptr, // MM01
+ basegfx::B2DLineJoin::NONE,
+ css::drawing::LineCap_BUTT,
+ basegfx::deg2rad(15.0), // not used with B2DLineJoin::NONE, but the correct default
+ bPixelSnapHairline,
+ this );
+ }
+
+ // prepare to restore the fill color
+ mbInitFillColor = mbFillColor;
+ }
+ }
+
+ return bDrawn;
+}
+
+void OutputDevice::EmulateDrawTransparent ( const tools::PolyPolygon& rPolyPoly,
+ sal_uInt16 nTransparencePercent )
+{
+ // #110958# Disable alpha VDev, we perform the necessary
+ VirtualDevice* pOldAlphaVDev = mpAlphaVDev;
+
+ // operation explicitly further below.
+ if( mpAlphaVDev )
+ mpAlphaVDev = nullptr;
+
+ GDIMetaFile* pOldMetaFile = mpMetaFile;
+ mpMetaFile = nullptr;
+
+ tools::PolyPolygon aPolyPoly( LogicToPixel( rPolyPoly ) );
+ tools::Rectangle aPolyRect( aPolyPoly.GetBoundRect() );
+ tools::Rectangle aDstRect( Point(), GetOutputSizePixel() );
+
+ aDstRect.Intersection( aPolyRect );
+
+ ClipToPaintRegion( aDstRect );
+
+ if( !aDstRect.IsEmpty() )
+ {
+ bool bDrawn = false;
+
+ // debug helper:
+ static const char* pDisableNative = getenv( "SAL_DISABLE_NATIVE_ALPHA" );
+
+ // #i66849# Added fast path for exactly rectangular
+ // polygons
+ // #i83087# Naturally, system alpha blending cannot
+ // work with separate alpha VDev
+ if( !mpAlphaVDev && !pDisableNative && aPolyPoly.IsRect() )
+ {
+ // setup Graphics only here (other cases delegate
+ // to basic OutDev methods)
+ if ( mbInitClipRegion )
+ InitClipRegion();
+
+ if ( mbInitLineColor )
+ InitLineColor();
+
+ if ( mbInitFillColor )
+ InitFillColor();
+
+ tools::Rectangle aLogicPolyRect( rPolyPoly.GetBoundRect() );
+ tools::Rectangle aPixelRect( ImplLogicToDevicePixel( aLogicPolyRect ) );
+
+ if( !mbOutputClipped )
+ {
+ bDrawn = mpGraphics->DrawAlphaRect( aPixelRect.Left(), aPixelRect.Top(),
+ // #i98405# use methods with small g, else one pixel too much will be painted.
+ // This is because the source is a polygon which when painted would not paint
+ // the rightmost and lowest pixel line(s), so use one pixel less for the
+ // rectangle, too.
+ aPixelRect.getWidth(), aPixelRect.getHeight(),
+ sal::static_int_cast<sal_uInt8>(nTransparencePercent),
+ this );
+ }
+ else
+ {
+ bDrawn = true;
+ }
+ }
+
+ if( !bDrawn )
+ {
+ ScopedVclPtrInstance< VirtualDevice > aVDev(*this, DeviceFormat::BITMASK);
+ const Size aDstSz( aDstRect.GetSize() );
+ const sal_uInt8 cTrans = static_cast<sal_uInt8>(MinMax( FRound( nTransparencePercent * 2.55 ), 0, 255 ));
+
+ if( aDstRect.Left() || aDstRect.Top() )
+ aPolyPoly.Move( -aDstRect.Left(), -aDstRect.Top() );
+
+ if( aVDev->SetOutputSizePixel( aDstSz ) )
+ {
+ const bool bOldMap = mbMap;
+
+ EnableMapMode( false );
+
+ aVDev->SetLineColor( COL_BLACK );
+ aVDev->SetFillColor( COL_BLACK );
+ aVDev->DrawPolyPolygon( aPolyPoly );
+
+ Bitmap aPaint( GetBitmap( aDstRect.TopLeft(), aDstSz ) );
+ Bitmap aPolyMask( aVDev->GetBitmap( Point(), aDstSz ) );
+
+ // #107766# check for non-empty bitmaps before accessing them
+ if( !!aPaint && !!aPolyMask )
+ {
+ BitmapScopedWriteAccess pW(aPaint);
+ Bitmap::ScopedReadAccess pR(aPolyMask);
+
+ if( pW && pR )
+ {
+ BitmapColor aPixCol;
+ const BitmapColor aFillCol( GetFillColor() );
+ const BitmapColor aBlack( pR->GetBestMatchingColor( COL_BLACK ) );
+ const long nWidth = pW->Width();
+ const long nHeight = pW->Height();
+ const long nR = aFillCol.GetRed();
+ const long nG = aFillCol.GetGreen();
+ const long nB = aFillCol.GetBlue();
+ long nX, nY;
+
+ if( aPaint.GetBitCount() <= 8 )
+ {
+ const BitmapPalette& rPal = pW->GetPalette();
+ const sal_uInt16 nCount = rPal.GetEntryCount();
+ BitmapColor* pMap = reinterpret_cast<BitmapColor*>(new sal_uInt8[ nCount * sizeof( BitmapColor ) ]);
+
+ for( sal_uInt16 i = 0; i < nCount; i++ )
+ {
+ BitmapColor aCol( rPal[ i ] );
+ aCol.Merge( aFillCol, cTrans );
+ pMap[ i ] = BitmapColor( static_cast<sal_uInt8>(rPal.GetBestIndex( aCol )) );
+ }
+
+ if( pR->GetScanlineFormat() == ScanlineFormat::N1BitMsbPal &&
+ pW->GetScanlineFormat() == ScanlineFormat::N8BitPal )
+ {
+ const sal_uInt8 cBlack = aBlack.GetIndex();
+
+ for( nY = 0; nY < nHeight; nY++ )
+ {
+ Scanline pWScan = pW->GetScanline( nY );
+ Scanline pRScan = pR->GetScanline( nY );
+ sal_uInt8 cBit = 128;
+
+ for( nX = 0; nX < nWidth; nX++, cBit >>= 1, pWScan++ )
+ {
+ if( !cBit )
+ {
+ cBit = 128;
+ pRScan += 1;
+ }
+ if( ( *pRScan & cBit ) == cBlack )
+ {
+ *pWScan = pMap[ *pWScan ].GetIndex();
+ }
+ }
+ }
+ }
+ else
+ {
+ for( nY = 0; nY < nHeight; nY++ )
+ {
+ Scanline pScanline = pW->GetScanline(nY);
+ Scanline pScanlineRead = pR->GetScanline(nY);
+ for( nX = 0; nX < nWidth; nX++ )
+ {
+ if( pR->GetPixelFromData( pScanlineRead, nX ) == aBlack )
+ {
+ pW->SetPixelOnData( pScanline, nX, pMap[ pW->GetIndexFromData( pScanline, nX ) ] );
+ }
+ }
+ }
+ }
+ delete[] reinterpret_cast<sal_uInt8*>(pMap);
+ }
+ else
+ {
+ if( pR->GetScanlineFormat() == ScanlineFormat::N1BitMsbPal &&
+ pW->GetScanlineFormat() == ScanlineFormat::N24BitTcBgr )
+ {
+ const sal_uInt8 cBlack = aBlack.GetIndex();
+
+ for( nY = 0; nY < nHeight; nY++ )
+ {
+ Scanline pWScan = pW->GetScanline( nY );
+ Scanline pRScan = pR->GetScanline( nY );
+ sal_uInt8 cBit = 128;
+
+ for( nX = 0; nX < nWidth; nX++, cBit >>= 1, pWScan += 3 )
+ {
+ if( !cBit )
+ {
+ cBit = 128;
+ pRScan += 1;
+ }
+ if( ( *pRScan & cBit ) == cBlack )
+ {
+ pWScan[ 0 ] = ColorChannelMerge( pWScan[ 0 ], nB, cTrans );
+ pWScan[ 1 ] = ColorChannelMerge( pWScan[ 1 ], nG, cTrans );
+ pWScan[ 2 ] = ColorChannelMerge( pWScan[ 2 ], nR, cTrans );
+ }
+ }
+ }
+ }
+ else
+ {
+ for( nY = 0; nY < nHeight; nY++ )
+ {
+ Scanline pScanline = pW->GetScanline(nY);
+ Scanline pScanlineRead = pR->GetScanline(nY);
+ for( nX = 0; nX < nWidth; nX++ )
+ {
+ if( pR->GetPixelFromData( pScanlineRead, nX ) == aBlack )
+ {
+ aPixCol = pW->GetColor( nY, nX );
+ aPixCol.Merge(aFillCol, cTrans);
+ pW->SetPixelOnData(pScanline, nX, aPixCol);
+ }
+ }
+ }
+ }
+ }
+ }
+
+ pR.reset();
+ pW.reset();
+
+ DrawBitmap( aDstRect.TopLeft(), aPaint );
+
+ EnableMapMode( bOldMap );
+
+ if( mbLineColor )
+ {
+ Push( PushFlags::FILLCOLOR );
+ SetFillColor();
+ DrawPolyPolygon( rPolyPoly );
+ Pop();
+ }
+ }
+ }
+ else
+ {
+ DrawPolyPolygon( rPolyPoly );
+ }
+ }
+ }
+
+ mpMetaFile = pOldMetaFile;
+
+ // #110958# Restore disabled alpha VDev
+ mpAlphaVDev = pOldAlphaVDev;
+}
+
+void OutputDevice::DrawTransparent( const tools::PolyPolygon& rPolyPoly,
+ sal_uInt16 nTransparencePercent )
+{
+ assert(!is_double_buffered_window());
+
+ // short circuit for drawing an opaque polygon
+ if( (nTransparencePercent < 1) || (mnDrawMode & DrawModeFlags::NoTransparency) )
+ {
+ DrawPolyPolygon( rPolyPoly );
+ return;
+ }
+
+ // short circuit for drawing an invisible polygon
+ if( !mbFillColor || (nTransparencePercent >= 100) )
+ {
+ DrawInvisiblePolygon( rPolyPoly );
+ return; // tdf#84294: do not record it in metafile
+ }
+
+ // handle metafile recording
+ if( mpMetaFile )
+ mpMetaFile->AddAction( new MetaTransparentAction( rPolyPoly, nTransparencePercent ) );
+
+ bool bDrawn = !IsDeviceOutputNecessary() || ImplIsRecordLayout();
+ if( bDrawn )
+ return;
+
+ // get the device graphics as drawing target
+ if( !mpGraphics && !AcquireGraphics() )
+ return;
+
+ // try hard to draw it directly, because the emulation layers are slower
+ bDrawn = DrawTransparentNatively( rPolyPoly, nTransparencePercent );
+
+ if (!bDrawn)
+ EmulateDrawTransparent( rPolyPoly, nTransparencePercent );
+
+ // #110958# Apply alpha value also to VDev alpha channel
+ if( mpAlphaVDev )
+ {
+ const Color aFillCol( mpAlphaVDev->GetFillColor() );
+ mpAlphaVDev->SetFillColor( Color(sal::static_int_cast<sal_uInt8>(255*nTransparencePercent/100),
+ sal::static_int_cast<sal_uInt8>(255*nTransparencePercent/100),
+ sal::static_int_cast<sal_uInt8>(255*nTransparencePercent/100)) );
+
+ mpAlphaVDev->DrawTransparent( rPolyPoly, nTransparencePercent );
+
+ mpAlphaVDev->SetFillColor( aFillCol );
+ }
+}
+
+void OutputDevice::DrawTransparent( const GDIMetaFile& rMtf, const Point& rPos,
+ const Size& rSize, const Gradient& rTransparenceGradient )
+{
+ assert(!is_double_buffered_window());
+
+ const Color aBlack( COL_BLACK );
+
+ if( mpMetaFile )
+ {
+ // missing here is to map the data using the DeviceTransformation
+ mpMetaFile->AddAction( new MetaFloatTransparentAction( rMtf, rPos, rSize, rTransparenceGradient ) );
+ }
+
+ if ( !IsDeviceOutputNecessary() )
+ return;
+
+ if( ( rTransparenceGradient.GetStartColor() == aBlack && rTransparenceGradient.GetEndColor() == aBlack ) ||
+ ( mnDrawMode & DrawModeFlags::NoTransparency ) )
+ {
+ const_cast<GDIMetaFile&>(rMtf).WindStart();
+ const_cast<GDIMetaFile&>(rMtf).Play( this, rPos, rSize );
+ const_cast<GDIMetaFile&>(rMtf).WindStart();
+ }
+ else
+ {
+ GDIMetaFile* pOldMetaFile = mpMetaFile;
+ tools::Rectangle aOutRect( LogicToPixel( rPos ), LogicToPixel( rSize ) );
+ Point aPoint;
+ tools::Rectangle aDstRect( aPoint, GetOutputSizePixel() );
+
+ mpMetaFile = nullptr;
+ aDstRect.Intersection( aOutRect );
+
+ ClipToPaintRegion( aDstRect );
+
+ if( !aDstRect.IsEmpty() )
+ {
+ ScopedVclPtrInstance< VirtualDevice > xVDev;
+
+ xVDev->mnDPIX = mnDPIX;
+ xVDev->mnDPIY = mnDPIY;
+
+ if( xVDev->SetOutputSizePixel( aDstRect.GetSize() ) )
+ {
+ if(GetAntialiasing() != AntialiasingFlags::NONE)
+ {
+ // #i102109#
+ // For MetaFile replay (see task) it may now be necessary to take
+ // into account that the content is AntiAlialiased and needs to be masked
+ // like that. Instead of masking, i will use a copy-modify-paste cycle
+ // here (as i already use in the VclPrimiziveRenderer with success)
+ xVDev->SetAntialiasing(GetAntialiasing());
+
+ // create MapMode for buffer (offset needed) and set
+ MapMode aMap(GetMapMode());
+ const Point aOutPos(PixelToLogic(aDstRect.TopLeft()));
+ aMap.SetOrigin(Point(-aOutPos.X(), -aOutPos.Y()));
+ xVDev->SetMapMode(aMap);
+
+ // copy MapMode state and disable for target
+ const bool bOrigMapModeEnabled(IsMapModeEnabled());
+ EnableMapMode(false);
+
+ // copy MapMode state and disable for buffer
+ const bool bBufferMapModeEnabled(xVDev->IsMapModeEnabled());
+ xVDev->EnableMapMode(false);
+
+ // copy content from original to buffer
+ xVDev->DrawOutDev( aPoint, xVDev->GetOutputSizePixel(), // dest
+ aDstRect.TopLeft(), xVDev->GetOutputSizePixel(), // source
+ *this);
+
+ // draw MetaFile to buffer
+ xVDev->EnableMapMode(bBufferMapModeEnabled);
+ const_cast<GDIMetaFile&>(rMtf).WindStart();
+ const_cast<GDIMetaFile&>(rMtf).Play(xVDev.get(), rPos, rSize);
+ const_cast<GDIMetaFile&>(rMtf).WindStart();
+
+ // get content bitmap from buffer
+ xVDev->EnableMapMode(false);
+
+ const Bitmap aPaint(xVDev->GetBitmap(aPoint, xVDev->GetOutputSizePixel()));
+
+ // create alpha mask from gradient and get as Bitmap
+ xVDev->EnableMapMode(bBufferMapModeEnabled);
+ xVDev->SetDrawMode(DrawModeFlags::GrayGradient);
+ xVDev->DrawGradient(tools::Rectangle(rPos, rSize), rTransparenceGradient);
+ xVDev->SetDrawMode(DrawModeFlags::Default);
+ xVDev->EnableMapMode(false);
+
+ const AlphaMask aAlpha(xVDev->GetBitmap(aPoint, xVDev->GetOutputSizePixel()));
+
+ xVDev.disposeAndClear();
+
+ // draw masked content to target and restore MapMode
+ DrawBitmapEx(aDstRect.TopLeft(), BitmapEx(aPaint, aAlpha));
+ EnableMapMode(bOrigMapModeEnabled);
+ }
+ else
+ {
+ Bitmap aPaint, aMask;
+ AlphaMask aAlpha;
+ MapMode aMap( GetMapMode() );
+ Point aOutPos( PixelToLogic( aDstRect.TopLeft() ) );
+ const bool bOldMap = mbMap;
+
+ aMap.SetOrigin( Point( -aOutPos.X(), -aOutPos.Y() ) );
+ xVDev->SetMapMode( aMap );
+ const bool bVDevOldMap = xVDev->IsMapModeEnabled();
+
+ // create paint bitmap
+ const_cast<GDIMetaFile&>(rMtf).WindStart();
+ const_cast<GDIMetaFile&>(rMtf).Play( xVDev.get(), rPos, rSize );
+ const_cast<GDIMetaFile&>(rMtf).WindStart();
+ xVDev->EnableMapMode( false );
+ aPaint = xVDev->GetBitmap( Point(), xVDev->GetOutputSizePixel() );
+ xVDev->EnableMapMode( bVDevOldMap ); // #i35331#: MUST NOT use EnableMapMode( sal_True ) here!
+
+ // create mask bitmap
+ xVDev->SetLineColor( COL_BLACK );
+ xVDev->SetFillColor( COL_BLACK );
+ xVDev->DrawRect( tools::Rectangle( xVDev->PixelToLogic( Point() ), xVDev->GetOutputSize() ) );
+ xVDev->SetDrawMode( DrawModeFlags::WhiteLine | DrawModeFlags::WhiteFill | DrawModeFlags::WhiteText |
+ DrawModeFlags::WhiteBitmap | DrawModeFlags::WhiteGradient );
+ const_cast<GDIMetaFile&>(rMtf).WindStart();
+ const_cast<GDIMetaFile&>(rMtf).Play( xVDev.get(), rPos, rSize );
+ const_cast<GDIMetaFile&>(rMtf).WindStart();
+ xVDev->EnableMapMode( false );
+ aMask = xVDev->GetBitmap( Point(), xVDev->GetOutputSizePixel() );
+ xVDev->EnableMapMode( bVDevOldMap ); // #i35331#: MUST NOT use EnableMapMode( sal_True ) here!
+
+ // create alpha mask from gradient
+ xVDev->SetDrawMode( DrawModeFlags::GrayGradient );
+ xVDev->DrawGradient( tools::Rectangle( rPos, rSize ), rTransparenceGradient );
+ xVDev->SetDrawMode( DrawModeFlags::Default );
+ xVDev->EnableMapMode( false );
+ xVDev->DrawMask( Point(), xVDev->GetOutputSizePixel(), aMask, COL_WHITE );
+
+ aAlpha = xVDev->GetBitmap( Point(), xVDev->GetOutputSizePixel() );
+
+ xVDev.disposeAndClear();
+
+ EnableMapMode( false );
+ DrawBitmapEx( aDstRect.TopLeft(), BitmapEx( aPaint, aAlpha ) );
+ EnableMapMode( bOldMap );
+ }
+ }
+ }
+
+ mpMetaFile = pOldMetaFile;
+ }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-21 16:55:36 +0000