drawinglayer/source/processor2d/vclhelperbufferdevice.cxx

   1 /*************************************************************************
   2  *
   3  *  OpenOffice.org - a multi-platform office productivity suite
   4  *
   5  *  $RCSfile: vclhelperbufferdevice.cxx,v $
   6  *
   7  *  $Revision: 1.6 $
   8  *
   9  *  last change: $Author: aw $ $Date: 2008-05-27 14:11:22 $
  10  *
  11  *  The Contents of this file are made available subject to
  12  *  the terms of GNU Lesser General Public License Version 2.1.
  13  *
  14  *
  15  *    GNU Lesser General Public License Version 2.1
  16  *    =============================================
  17  *    Copyright 2005 by Sun Microsystems, Inc.
  18  *    901 San Antonio Road, Palo Alto, CA 94303, USA
  19  *
  20  *    This library is free software; you can redistribute it and/or
  21  *    modify it under the terms of the GNU Lesser General Public
  22  *    License version 2.1, as published by the Free Software Foundation.
  23  *
  24  *    This library is distributed in the hope that it will be useful,
  25  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  26  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  27  *    Lesser General Public License for more details.
  28  *
  29  *    You should have received a copy of the GNU Lesser General Public
  30  *    License along with this library; if not, write to the Free Software
  31  *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  32  *    MA  02111-1307  USA
  33  *
  34  ************************************************************************/
  35
  36 // MARKER(update_precomp.py): autogen include statement, do not remove
  37 #include "precompiled_drawinglayer.hxx"
  38
  39 #include <vclhelperbufferdevice.hxx>
  40 #include <basegfx/range/b2drange.hxx>
  41 #include <vcl/bitmapex.hxx>
  42 #include <basegfx/matrix/b2dhommatrix.hxx>
  43 #include <tools/stream.hxx>
  44
  45 //////////////////////////////////////////////////////////////////////////////
  46 // support for rendering Bitmap and BitmapEx contents
  47
  48 namespace drawinglayer
  49 {
  50     impBufferDevice::impBufferDevice(
  51         OutputDevice& rOutDev,
  52         const basegfx::B2DRange& rRange,
  53         bool bAddOffsetToMapping)
  54     :   mrOutDev(rOutDev),
  55         maContent(rOutDev),
  56         mpMask(0L),
  57         mpAlpha(0L)
  58     {
  59         basegfx::B2DRange aRangePixel(rRange);
  60         aRangePixel.transform(rOutDev.GetViewTransformation());
  61         const Rectangle aRectPixel(
  62             (sal_Int32)floor(aRangePixel.getMinX()), (sal_Int32)floor(aRangePixel.getMinY()),
  63             (sal_Int32)ceil(aRangePixel.getMaxX()), (sal_Int32)ceil(aRangePixel.getMaxY()));
  64         const Point aEmptyPoint;
  65         maDestPixel = Rectangle(aEmptyPoint, rOutDev.GetOutputSizePixel());
  66         maDestPixel.Intersection(aRectPixel);
  67
  68         if(isVisible())
  69         {
  70             maContent.SetOutputSizePixel(maDestPixel.GetSize(), false);
  71
  72             // #i93485# assert when copying from window to VDev is used
  73             OSL_ENSURE(rOutDev.GetOutDevType() != OUTDEV_WINDOW,
  74                 "impBufferDevice render helper: Copying from Window to VDev, this should be avoided (!)");
  75
  76             const bool bWasEnabledSrc(rOutDev.IsMapModeEnabled());
  77             rOutDev.EnableMapMode(false);
  78             maContent.DrawOutDev(aEmptyPoint, maDestPixel.GetSize(), maDestPixel.TopLeft(), maDestPixel.GetSize(), rOutDev);
  79             rOutDev.EnableMapMode(bWasEnabledSrc);
  80
  81             MapMode aNewMapMode(rOutDev.GetMapMode());
  82
  83             if(bAddOffsetToMapping)
  84             {
  85                 const Point aLogicTopLeft(rOutDev.PixelToLogic(maDestPixel.TopLeft()));
  86                 aNewMapMode.SetOrigin(Point(-aLogicTopLeft.X(), -aLogicTopLeft.Y()));
  87             }
  88
  89             maContent.SetMapMode(aNewMapMode);
  90
  91             // copy AA flag for new target
  92             maContent.SetAntialiasing(mrOutDev.GetAntialiasing());
  93         }
  94     }
  95
  96     impBufferDevice::~impBufferDevice()
  97     {
  98         delete mpMask;
  99         delete mpAlpha;
 100     }
 101
 102     void impBufferDevice::paint(double fTrans)
 103     {
 104         const Point aEmptyPoint;
 105         const Size aSizePixel(maContent.GetOutputSizePixel());
 106         const bool bWasEnabledDst(mrOutDev.IsMapModeEnabled());
 107         static bool bDoSaveForVisualControl(false);
 108
 109         mrOutDev.EnableMapMode(false);
 110         maContent.EnableMapMode(false);
 111         Bitmap aContent(maContent.GetBitmap(aEmptyPoint, aSizePixel));
 112
 113         if(bDoSaveForVisualControl)
 114         {
 115             SvFileStream aNew((const String&)String(ByteString( "c:\\content.bmp" ), RTL_TEXTENCODING_UTF8), STREAM_WRITE|STREAM_TRUNC);
 116             aNew << aContent;
 117         }
 118
 119         if(mpAlpha)
 120         {
 121             mpAlpha->EnableMapMode(false);
 122             const AlphaMask aAlphaMask(mpAlpha->GetBitmap(aEmptyPoint, aSizePixel));
 123
 124             if(bDoSaveForVisualControl)
 125             {
 126                 SvFileStream aNew((const String&)String(ByteString( "c:\\alpha.bmp" ), RTL_TEXTENCODING_UTF8), STREAM_WRITE|STREAM_TRUNC);
 127                 aNew << aAlphaMask.GetBitmap();
 128             }
 129
 130             mrOutDev.DrawBitmapEx(maDestPixel.TopLeft(), BitmapEx(aContent, aAlphaMask));
 131         }
 132         else if(mpMask)
 133         {
 134             mpMask->EnableMapMode(false);
 135             const Bitmap aMask(mpMask->GetBitmap(aEmptyPoint, aSizePixel));
 136
 137             if(bDoSaveForVisualControl)
 138             {
 139                 SvFileStream aNew((const String&)String(ByteString( "c:\\mask.bmp" ), RTL_TEXTENCODING_UTF8), STREAM_WRITE|STREAM_TRUNC);
 140                 aNew << aMask;
 141             }
 142
 143             mrOutDev.DrawBitmapEx(maDestPixel.TopLeft(), BitmapEx(aContent, aMask));
 144         }
 145         else if(0.0 != fTrans)
 146         {
 147             sal_uInt8 nMaskValue((sal_uInt8)basegfx::fround(fTrans * 255.0));
 148             const AlphaMask aAlphaMask(aSizePixel, &nMaskValue);
 149             mrOutDev.DrawBitmapEx(maDestPixel.TopLeft(), BitmapEx(aContent, aAlphaMask));
 150         }
 151         else
 152         {
 153             mrOutDev.DrawBitmap(maDestPixel.TopLeft(), aContent);
 154         }
 155
 156         mrOutDev.EnableMapMode(bWasEnabledDst);
 157     }
 158
 159     VirtualDevice& impBufferDevice::getMask()
 160     {
 161         if(!mpMask)
 162         {
 163             mpMask = new VirtualDevice(mrOutDev, 1);
 164             mpMask->SetOutputSizePixel(maDestPixel.GetSize(), true);
 165             mpMask->SetMapMode(maContent.GetMapMode());
 166
 167             // do NOT copy AA flag for mask!
 168         }
 169
 170         return *mpMask;
 171     }
 172
 173     VirtualDevice& impBufferDevice::getAlpha()
 174     {
 175         if(!mpAlpha)
 176         {
 177             mpAlpha = new VirtualDevice();
 178             mpAlpha->SetOutputSizePixel(maDestPixel.GetSize(), true);
 179             mpAlpha->SetMapMode(maContent.GetMapMode());
 180
 181             // copy AA flag for new target; masking needs to be smooth
 182             mpAlpha->SetAntialiasing(maContent.GetAntialiasing());
 183         }
 184
 185         return *mpAlpha;
 186     }
 187 } // end of namespace drawinglayer
 188
 189 //////////////////////////////////////////////////////////////////////////////
 190 // eof