Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 503 insertions, 0 deletions

diff --git a/vcl/source/graphic/GraphicObject2.cxx b/vcl/source/graphic/GraphicObject2.cxx
new file mode 100644
index 000000000..89af907e2
--- /dev/null
+++ b/vcl/source/graphic/GraphicObject2.cxx
@@ -0,0 +1,503 @@
+/* -*- 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 <sal/config.h>
+
+#include <tools/gen.hxx>
+#include <vcl/outdev.hxx>
+#include <vcl/alpha.hxx>
+#include <vcl/virdev.hxx>
+#include <vcl/GraphicObject.hxx>
+#include <memory>
+
+struct ImplTileInfo
+{
+    ImplTileInfo() : nTilesEmptyX(0), nTilesEmptyY(0) {}
+
+    Point aTileTopLeft;     // top, left position of the rendered tile
+    Point aNextTileTopLeft; // top, left position for next recursion
+                            // level's tile
+    Size  aTileSizePixel;   // size of the generated tile (might
+                            // differ from
+                            // aNextTileTopLeft-aTileTopLeft, because
+                            // this is nExponent*prevTileSize. The
+                            // generated tile is always nExponent
+                            // times the previous tile, such that it
+                            // can be used in the next stage. The
+                            // required area coverage is often
+                            // less. The extraneous area covered is
+                            // later overwritten by the next stage)
+    int   nTilesEmptyX;     // number of original tiles empty right of
+                            // this tile. This counts from
+                            // aNextTileTopLeft, i.e. the additional
+                            // area covered by aTileSizePixel is not
+                            // considered here. This is for
+                            // unification purposes, as the iterative
+                            // calculation of the next level's empty
+                            // tiles has to be based on this value.
+    int   nTilesEmptyY;     // as above, for Y
+};
+
+
+bool GraphicObject::ImplRenderTempTile( VirtualDevice& rVDev,
+                                        int nNumTilesX, int nNumTilesY,
+                                        const Size& rTileSizePixel,
+                                        const GraphicAttr* pAttr )
+{
+    // how many tiles to generate per recursion step
+    const int nExponent = 2;
+
+    // determine MSB factor
+    int nMSBFactor( 1 );
+    while( nNumTilesX / nMSBFactor != 0 ||
+           nNumTilesY / nMSBFactor != 0 )
+    {
+        nMSBFactor *= nExponent;
+    }
+
+    // one less
+    if(nMSBFactor > 1)
+    {
+        nMSBFactor /= nExponent;
+    }
+    ImplTileInfo aTileInfo;
+
+    // #105229# Switch off mapping (converting to logic and back to
+    // pixel might cause roundoff errors)
+    bool bOldMap( rVDev.IsMapModeEnabled() );
+    rVDev.EnableMapMode( false );
+
+    bool bRet( ImplRenderTileRecursive( rVDev, nExponent, nMSBFactor, nNumTilesX, nNumTilesY,
+                                        nNumTilesX, nNumTilesY, rTileSizePixel, pAttr, aTileInfo ) );
+
+    rVDev.EnableMapMode( bOldMap );
+
+    return bRet;
+}
+
+// define for debug drawings
+//#define DBG_TEST
+
+// see header comment. this works similar to base conversion of a
+// number, i.e. if the exponent is 10, then the number for every tile
+// size is given by the decimal place of the corresponding decimal
+// representation.
+bool GraphicObject::ImplRenderTileRecursive( VirtualDevice& rVDev, int nExponent, int nMSBFactor,
+                                             int nNumOrigTilesX, int nNumOrigTilesY,
+                                             int nRemainderTilesX, int nRemainderTilesY,
+                                             const Size& rTileSizePixel, const GraphicAttr* pAttr,
+                                             ImplTileInfo& rTileInfo )
+{
+    // gets loaded with our tile bitmap
+    std::unique_ptr<GraphicObject> xTmpGraphic;
+    GraphicObject* pTileGraphic;
+
+    // stores a flag that renders the zero'th tile position
+    // (i.e. (0,0)+rCurrPos) only if we're at the bottom of the
+    // recursion stack. All other position already have that tile
+    // rendered, because the lower levels painted their generated tile
+    // there.
+    bool bNoFirstTileDraw( false );
+
+    // what's left when we're done with our tile size
+    const int nNewRemainderX( nRemainderTilesX % nMSBFactor );
+    const int nNewRemainderY( nRemainderTilesY % nMSBFactor );
+
+    // gets filled out from the recursive call with info of what's
+    // been generated
+    ImplTileInfo aTileInfo;
+
+    // check for recursion's end condition: LSB place reached?
+    if( nMSBFactor == 1 )
+    {
+        pTileGraphic = this;
+
+        // set initial tile size -> orig size
+        aTileInfo.aTileSizePixel = rTileSizePixel;
+        aTileInfo.nTilesEmptyX = nNumOrigTilesX;
+        aTileInfo.nTilesEmptyY = nNumOrigTilesY;
+    }
+    else if( ImplRenderTileRecursive( rVDev, nExponent, nMSBFactor/nExponent,
+                                      nNumOrigTilesX, nNumOrigTilesY,
+                                      nNewRemainderX, nNewRemainderY,
+                                      rTileSizePixel, pAttr, aTileInfo ) )
+    {
+        // extract generated tile -> see comment on the first loop below
+        BitmapEx aTileBitmap( rVDev.GetBitmap( aTileInfo.aTileTopLeft, aTileInfo.aTileSizePixel ) );
+
+        xTmpGraphic.reset(new GraphicObject(aTileBitmap));
+        pTileGraphic = xTmpGraphic.get();
+
+        // fill stripes left over from upstream levels:
+
+        //  x0000
+        //  0
+        //  0
+        //  0
+        //  0
+
+        // where x denotes the place filled by our recursive predecessors
+
+        // check whether we have to fill stripes here. Although not
+        // obvious, there is one case where we can skip this step: if
+        // the previous recursion level (the one who filled our
+        // aTileInfo) had zero area to fill, then there are no white
+        // stripes left, naturally. This happens if the digit
+        // associated to that level has a zero, and can be checked via
+        // aTileTopLeft==aNextTileTopLeft.
+        if( aTileInfo.aTileTopLeft != aTileInfo.aNextTileTopLeft )
+        {
+            // now fill one row from aTileInfo.aNextTileTopLeft.X() all
+            // the way to the right
+            // current output position while drawing
+            Point aCurrPos(aTileInfo.aNextTileTopLeft.X(), aTileInfo.aTileTopLeft.Y());
+            for (int nX=0; nX < aTileInfo.nTilesEmptyX; nX += nMSBFactor)
+            {
+                if (!pTileGraphic->Draw(rVDev, aCurrPos, aTileInfo.aTileSizePixel, pAttr))
+                    return false;
+
+                aCurrPos.AdjustX(aTileInfo.aTileSizePixel.Width() );
+            }
+
+#ifdef DBG_TEST
+//          rVDev.SetFillCOL_WHITE );
+            rVDev.SetFillColor();
+            rVDev.SetLineColor( Color( 255 * nExponent / nMSBFactor, 255 - 255 * nExponent / nMSBFactor, 128 - 255 * nExponent / nMSBFactor ) );
+            rVDev.DrawEllipse( tools::Rectangle(aTileInfo.aNextTileTopLeft.X(), aTileInfo.aTileTopLeft.Y(),
+                                         aTileInfo.aNextTileTopLeft.X() - 1 + (aTileInfo.nTilesEmptyX/nMSBFactor)*aTileInfo.aTileSizePixel.Width(),
+                                         aTileInfo.aTileTopLeft.Y() + aTileInfo.aTileSizePixel.Height() - 1) );
+#endif
+
+            // now fill one column from aTileInfo.aNextTileTopLeft.Y() all
+            // the way to the bottom
+            aCurrPos.setX( aTileInfo.aTileTopLeft.X() );
+            aCurrPos.setY( aTileInfo.aNextTileTopLeft.Y() );
+            for (int nY=0; nY < aTileInfo.nTilesEmptyY; nY += nMSBFactor)
+            {
+                if (!pTileGraphic->Draw(rVDev, aCurrPos, aTileInfo.aTileSizePixel, pAttr))
+                    return false;
+
+                aCurrPos.AdjustY(aTileInfo.aTileSizePixel.Height() );
+            }
+
+#ifdef DBG_TEST
+            rVDev.DrawEllipse( tools::Rectangle(aTileInfo.aTileTopLeft.X(), aTileInfo.aNextTileTopLeft.Y(),
+                                         aTileInfo.aTileTopLeft.X() + aTileInfo.aTileSizePixel.Width() - 1,
+                                         aTileInfo.aNextTileTopLeft.Y() - 1 + (aTileInfo.nTilesEmptyY/nMSBFactor)*aTileInfo.aTileSizePixel.Height()) );
+#endif
+        }
+        else
+        {
+            // Thought that aTileInfo.aNextTileTopLeft tile has always
+            // been drawn already, but that's wrong: typically,
+            // _parts_ of that tile have been drawn, since the
+            // previous level generated the tile there. But when
+            // aTileInfo.aNextTileTopLeft!=aTileInfo.aTileTopLeft, the
+            // difference between these two values is missing in the
+            // lower right corner of this first tile. So, can do that
+            // only here.
+            bNoFirstTileDraw = true;
+        }
+    }
+    else
+    {
+        return false;
+    }
+
+    // calc number of original tiles in our drawing area without
+    // remainder
+    nRemainderTilesX -= nNewRemainderX;
+    nRemainderTilesY -= nNewRemainderY;
+
+    // fill tile info for calling method
+    rTileInfo.aTileTopLeft     = aTileInfo.aNextTileTopLeft;
+    rTileInfo.aNextTileTopLeft = Point( rTileInfo.aTileTopLeft.X() + rTileSizePixel.Width()*nRemainderTilesX,
+                                        rTileInfo.aTileTopLeft.Y() + rTileSizePixel.Height()*nRemainderTilesY );
+    rTileInfo.aTileSizePixel   = Size( rTileSizePixel.Width()*nMSBFactor*nExponent,
+                                       rTileSizePixel.Height()*nMSBFactor*nExponent );
+    rTileInfo.nTilesEmptyX     = aTileInfo.nTilesEmptyX - nRemainderTilesX;
+    rTileInfo.nTilesEmptyY     = aTileInfo.nTilesEmptyY - nRemainderTilesY;
+
+    // init output position
+    Point aCurrPos = aTileInfo.aNextTileTopLeft;
+
+    // fill our drawing area. Fill possibly more, to create the next
+    // bigger tile size -> see bitmap extraction above. This does no
+    // harm, since everything right or below our actual area is
+    // overdrawn by our caller. Just in case we're in the last level,
+    // we don't draw beyond the right or bottom border.
+    for (int nY=0; nY < aTileInfo.nTilesEmptyY && nY < nExponent*nMSBFactor; nY += nMSBFactor)
+    {
+        aCurrPos.setX( aTileInfo.aNextTileTopLeft.X() );
+
+        for (int nX=0; nX < aTileInfo.nTilesEmptyX && nX < nExponent*nMSBFactor; nX += nMSBFactor)
+        {
+            if( bNoFirstTileDraw )
+                bNoFirstTileDraw = false; // don't draw first tile position
+            else if (!pTileGraphic->Draw(rVDev, aCurrPos, aTileInfo.aTileSizePixel, pAttr))
+                return false;
+
+            aCurrPos.AdjustX(aTileInfo.aTileSizePixel.Width() );
+        }
+
+        aCurrPos.AdjustY(aTileInfo.aTileSizePixel.Height() );
+    }
+
+#ifdef DBG_TEST
+//  rVDev.SetFillCOL_WHITE );
+    rVDev.SetFillColor();
+    rVDev.SetLineColor( Color( 255 * nExponent / nMSBFactor, 255 - 255 * nExponent / nMSBFactor, 128 - 255 * nExponent / nMSBFactor ) );
+    rVDev.DrawRect( tools::Rectangle((rTileInfo.aTileTopLeft.X())*rTileSizePixel.Width(),
+                              (rTileInfo.aTileTopLeft.Y())*rTileSizePixel.Height(),
+                              (rTileInfo.aNextTileTopLeft.X())*rTileSizePixel.Width()-1,
+                              (rTileInfo.aNextTileTopLeft.Y())*rTileSizePixel.Height()-1) );
+#endif
+
+    return true;
+}
+
+bool GraphicObject::ImplDrawTiled(OutputDevice& rOut, const tools::Rectangle& rArea, const Size& rSizePixel,
+                                  const Size& rOffset, const GraphicAttr* pAttr, int nTileCacheSize1D)
+{
+    const MapMode   aOutMapMode(rOut.GetMapMode());
+    const MapMode   aMapMode( aOutMapMode.GetMapUnit(), Point(), aOutMapMode.GetScaleX(), aOutMapMode.GetScaleY() );
+    bool            bRet( false );
+
+    // #i42643# Casting to Int64, to avoid integer overflow for
+    // huge-DPI output devices
+    if( GetGraphic().GetType() == GraphicType::Bitmap &&
+        static_cast<sal_Int64>(rSizePixel.Width()) * rSizePixel.Height() <
+        static_cast<sal_Int64>(nTileCacheSize1D)*nTileCacheSize1D )
+    {
+        // First combine very small bitmaps into a larger tile
+
+
+        ScopedVclPtrInstance< VirtualDevice > aVDev;
+        const int       nNumTilesInCacheX( (nTileCacheSize1D + rSizePixel.Width()-1) / rSizePixel.Width() );
+        const int       nNumTilesInCacheY( (nTileCacheSize1D + rSizePixel.Height()-1) / rSizePixel.Height() );
+
+        aVDev->SetOutputSizePixel( Size( nNumTilesInCacheX*rSizePixel.Width(),
+                                        nNumTilesInCacheY*rSizePixel.Height() ) );
+        aVDev->SetMapMode( aMapMode );
+
+        // draw bitmap content
+        if( ImplRenderTempTile( *aVDev, nNumTilesInCacheX,
+                                nNumTilesInCacheY, rSizePixel, pAttr ) )
+        {
+            BitmapEx aTileBitmap( aVDev->GetBitmap( Point(0,0), aVDev->GetOutputSize() ) );
+
+            // draw alpha content, if any
+            if( IsTransparent() )
+            {
+                GraphicObject aAlphaGraphic;
+
+                if( GetGraphic().IsAlpha() )
+                    aAlphaGraphic.SetGraphic(BitmapEx(GetGraphic().GetBitmapEx().GetAlpha().GetBitmap()));
+                else
+                    aAlphaGraphic.SetGraphic(BitmapEx(Bitmap()));
+
+                if( aAlphaGraphic.ImplRenderTempTile( *aVDev, nNumTilesInCacheX,
+                                                      nNumTilesInCacheY, rSizePixel, pAttr ) )
+                {
+                    // Combine bitmap and alpha/mask
+                    if( GetGraphic().IsAlpha() )
+                        aTileBitmap = BitmapEx( aTileBitmap.GetBitmap(),
+                                                AlphaMask( aVDev->GetBitmap( Point(0,0), aVDev->GetOutputSize() ) ) );
+                    else
+                        aTileBitmap = BitmapEx( aTileBitmap.GetBitmap(),
+                                                aVDev->GetBitmap( Point(0,0), aVDev->GetOutputSize() ).CreateMask( COL_WHITE ) );
+                }
+            }
+
+            // paint generated tile
+            GraphicObject aTmpGraphic( aTileBitmap );
+            bRet = aTmpGraphic.ImplDrawTiled(rOut, rArea,
+                                             aTileBitmap.GetSizePixel(),
+                                             rOffset, pAttr, nTileCacheSize1D);
+        }
+    }
+    else
+    {
+        const Size      aOutOffset( rOut.LogicToPixel( rOffset, aOutMapMode ) );
+        const tools::Rectangle aOutArea( rOut.LogicToPixel( rArea, aOutMapMode ) );
+
+        // number of invisible (because out-of-area) tiles
+        int nInvisibleTilesX;
+        int nInvisibleTilesY;
+
+        // round towards -infty for negative offset
+        if( aOutOffset.Width() < 0 )
+            nInvisibleTilesX = (aOutOffset.Width() - rSizePixel.Width() + 1) / rSizePixel.Width();
+        else
+            nInvisibleTilesX = aOutOffset.Width() / rSizePixel.Width();
+
+        // round towards -infty for negative offset
+        if( aOutOffset.Height() < 0 )
+            nInvisibleTilesY = (aOutOffset.Height() - rSizePixel.Height() + 1) / rSizePixel.Height();
+        else
+            nInvisibleTilesY = aOutOffset.Height() / rSizePixel.Height();
+
+        // origin from where to 'virtually' start drawing in pixel
+        const Point aOutOrigin( rOut.LogicToPixel( Point( rArea.Left() - rOffset.Width(),
+                                                           rArea.Top() - rOffset.Height() ) ) );
+        // position in pixel from where to really start output
+        const Point aOutStart( aOutOrigin.X() + nInvisibleTilesX*rSizePixel.Width(),
+                               aOutOrigin.Y() + nInvisibleTilesY*rSizePixel.Height() );
+
+        rOut.Push( vcl::PushFlags::CLIPREGION );
+        rOut.IntersectClipRegion( rArea );
+
+        // Paint all tiles
+
+
+        bRet = ImplDrawTiled(rOut, aOutStart,
+                             (aOutArea.GetWidth() + aOutArea.Left() - aOutStart.X() + rSizePixel.Width() - 1) / rSizePixel.Width(),
+                             (aOutArea.GetHeight() + aOutArea.Top() - aOutStart.Y() + rSizePixel.Height() - 1) / rSizePixel.Height(),
+                             rSizePixel, pAttr);
+
+        rOut.Pop();
+    }
+
+    return bRet;
+}
+
+bool GraphicObject::ImplDrawTiled( OutputDevice& rOut, const Point& rPosPixel,
+                                   int nNumTilesX, int nNumTilesY,
+                                   const Size& rTileSizePixel, const GraphicAttr* pAttr ) const
+{
+    Point   aCurrPos( rPosPixel );
+    Size    aTileSizeLogic( rOut.PixelToLogic( rTileSizePixel ) );
+    int     nX, nY;
+
+    // #107607# Use logical coordinates for metafile playing, too
+    bool    bDrawInPixel( rOut.GetConnectMetaFile() == nullptr && GraphicType::Bitmap == GetType() );
+    bool    bRet = false;
+
+    // #105229# Switch off mapping (converting to logic and back to
+    // pixel might cause roundoff errors)
+    bool bOldMap( rOut.IsMapModeEnabled() );
+
+    if( bDrawInPixel )
+        rOut.EnableMapMode( false );
+
+    for( nY=0; nY < nNumTilesY; ++nY )
+    {
+        aCurrPos.setX( rPosPixel.X() );
+
+        for( nX=0; nX < nNumTilesX; ++nX )
+        {
+            // #105229# work with pixel coordinates here, mapping is disabled!
+            // #104004# don't disable mapping for metafile recordings
+            // #108412# don't quit the loop if one draw fails
+
+            // update return value. This method should return true, if
+            // at least one of the looped Draws succeeded.
+            bRet |= Draw(rOut,
+                         bDrawInPixel ? aCurrPos : rOut.PixelToLogic(aCurrPos),
+                         bDrawInPixel ? rTileSizePixel : aTileSizeLogic,
+                         pAttr);
+
+            aCurrPos.AdjustX(rTileSizePixel.Width() );
+        }
+
+        aCurrPos.AdjustY(rTileSizePixel.Height() );
+    }
+
+    if( bDrawInPixel )
+        rOut.EnableMapMode( bOldMap );
+
+    return bRet;
+}
+
+void GraphicObject::ImplTransformBitmap( BitmapEx&          rBmpEx,
+                                         const GraphicAttr& rAttr,
+                                         const Size&        rCropLeftTop,
+                                         const Size&        rCropRightBottom,
+                                         const tools::Rectangle&   rCropRect,
+                                         const Size&        rDstSize,
+                                         bool               bEnlarge ) const
+{
+    // #107947# Extracted from svdograf.cxx
+
+    // #104115# Crop the bitmap
+    if( rAttr.IsCropped() )
+    {
+        rBmpEx.Crop( rCropRect );
+
+        // #104115# Negative crop sizes mean: enlarge bitmap and pad
+        if( bEnlarge && (
+            rCropLeftTop.Width() < 0 ||
+            rCropLeftTop.Height() < 0 ||
+            rCropRightBottom.Width() < 0 ||
+            rCropRightBottom.Height() < 0 ) )
+        {
+            Size aBmpSize( rBmpEx.GetSizePixel() );
+            sal_Int32 nPadLeft( rCropLeftTop.Width() < 0 ? -rCropLeftTop.Width() : 0 );
+            sal_Int32 nPadTop( rCropLeftTop.Height() < 0 ? -rCropLeftTop.Height() : 0 );
+            sal_Int32 nPadTotalWidth( aBmpSize.Width() + nPadLeft + (rCropRightBottom.Width() < 0 ? -rCropRightBottom.Width() : 0) );
+            sal_Int32 nPadTotalHeight( aBmpSize.Height() + nPadTop + (rCropRightBottom.Height() < 0 ? -rCropRightBottom.Height() : 0) );
+
+            BitmapEx aBmpEx2;
+
+            if( rBmpEx.IsAlpha() )
+            {
+                aBmpEx2 = BitmapEx( rBmpEx.GetBitmap(), rBmpEx.GetAlpha() );
+            }
+            else
+            {
+                // #104115# Generate mask bitmap and init to zero
+                Bitmap aMask(aBmpSize, vcl::PixelFormat::N8_BPP, &Bitmap::GetGreyPalette(256));
+                aMask.Erase( Color(0,0,0) );
+
+                // #104115# Always generate transparent bitmap, we need the border transparent
+                aBmpEx2 = BitmapEx( rBmpEx.GetBitmap(), aMask );
+
+                // #104115# Add opaque mask to source bitmap, otherwise the destination remains transparent
+                rBmpEx = aBmpEx2;
+            }
+
+            aBmpEx2.Scale(Size(nPadTotalWidth, nPadTotalHeight));
+            aBmpEx2.Erase( Color(ColorAlpha,0,0,0,0) );
+            aBmpEx2.CopyPixel( tools::Rectangle( Point(nPadLeft, nPadTop), aBmpSize ), tools::Rectangle( Point(0, 0), aBmpSize ), &rBmpEx );
+            rBmpEx = aBmpEx2;
+        }
+    }
+
+    const Size  aSizePixel( rBmpEx.GetSizePixel() );
+
+    if( rAttr.GetRotation() == 0_deg10 || IsAnimated() )
+        return;
+
+    if( !(aSizePixel.Width() && aSizePixel.Height() && rDstSize.Width() && rDstSize.Height()) )
+        return;
+
+    double fSrcWH = static_cast<double>(aSizePixel.Width()) / aSizePixel.Height();
+    double fDstWH = static_cast<double>(rDstSize.Width()) / rDstSize.Height();
+    double fScaleX = 1.0, fScaleY = 1.0;
+
+    // always choose scaling to shrink bitmap
+    if( fSrcWH < fDstWH )
+        fScaleY = aSizePixel.Width() / ( fDstWH * aSizePixel.Height() );
+    else
+        fScaleX = fDstWH * aSizePixel.Height() / aSizePixel.Width();
+
+    rBmpEx.Scale( fScaleX, fScaleY );
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */