slideshow/source/engine/slidebitmap.cxx

   1 /*************************************************************************
   2  *
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * Copyright 2008 by Sun Microsystems, Inc.
   6  *
   7  * OpenOffice.org - a multi-platform office productivity suite
   8  *
   9  * $RCSfile: slidebitmap.cxx,v $
  10  * $Revision: 1.12 $
  11  *
  12  * This file is part of OpenOffice.org.
  13  *
  14  * OpenOffice.org is free software: you can redistribute it and/or modify
  15  * it under the terms of the GNU Lesser General Public License version 3
  16  * only, as published by the Free Software Foundation.
  17  *
  18  * OpenOffice.org is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU Lesser General Public License version 3 for more details
  22  * (a copy is included in the LICENSE file that accompanied this code).
  23  *
  24  * You should have received a copy of the GNU Lesser General Public License
  25  * version 3 along with OpenOffice.org.  If not, see
  26  * <http://www.openoffice.org/license.html>
  27  * for a copy of the LGPLv3 License.
  28  *
  29  ************************************************************************/
  30
  31 // MARKER(update_precomp.py): autogen include statement, do not remove
  32 #include "precompiled_slideshow.hxx"
  33
  34 // must be first
  35 #include <canvas/debug.hxx>
  36 #include <tools/diagnose_ex.h>
  37 #include <slidebitmap.hxx>
  38
  39 #include <com/sun/star/rendering/XCanvas.hpp>
  40 #include <com/sun/star/rendering/XBitmap.hpp>
  41 #include <comphelper/anytostring.hxx>
  42 #include <cppuhelper/exc_hlp.hxx>
  43
  44 #include <basegfx/matrix/b2dhommatrix.hxx>
  45
  46 #include <canvas/canvastools.hxx>
  47 #include <basegfx/tools/canvastools.hxx>
  48
  49
  50 using namespace ::com::sun::star;
  51
  52 namespace slideshow
  53 {
  54     namespace internal
  55     {
  56
  57         SlideBitmap::SlideBitmap( const ::cppcanvas::BitmapSharedPtr& rBitmap ) :
  58             maOutputPos(),
  59             maClipPoly(),
  60             mxBitmap()
  61         {
  62             if( rBitmap )
  63                 mxBitmap = rBitmap->getUNOBitmap();
  64
  65             ENSURE_OR_THROW( mxBitmap.is(), "SlideBitmap::SlideBitmap(): Invalid bitmap" );
  66         }
  67
  68         bool SlideBitmap::draw( const ::cppcanvas::CanvasSharedPtr& rCanvas ) const
  69         {
  70             ENSURE_OR_RETURN( rCanvas && rCanvas->getUNOCanvas().is(),
  71                                "SlideBitmap::draw(): Invalid canvas" );
  72
  73             // selectively only copy the transformation from current viewstate,
  74             // don't want no clipping here.
  75             rendering::ViewState aViewState;
  76             aViewState.AffineTransform = rCanvas->getViewState().AffineTransform;
  77
  78             rendering::RenderState aRenderState;
  79             ::canvas::tools::initRenderState( aRenderState );
  80
  81             ::basegfx::B2DHomMatrix aTranslation;
  82             aTranslation.translate( maOutputPos.getX(),
  83                                     maOutputPos.getY() );
  84             ::canvas::tools::setRenderStateTransform( aRenderState, aTranslation );
  85
  86             try
  87             {
  88                 if( maClipPoly.count() )
  89                 {
  90                     // TODO(P1): Buffer the clip polygon
  91                     aRenderState.Clip =
  92                         ::basegfx::unotools::xPolyPolygonFromB2DPolyPolygon(
  93                             rCanvas->getUNOCanvas()->getDevice(),
  94                             maClipPoly );
  95                 }
  96
  97                 rCanvas->getUNOCanvas()->drawBitmap( mxBitmap,
  98                                                      aViewState,
  99                                                      aRenderState );
 100             }
 101             catch( uno::Exception& )
 102             {
 103                 OSL_ENSURE( false,
 104                             rtl::OUStringToOString(
 105                                 comphelper::anyToString( cppu::getCaughtException() ),
 106                                 RTL_TEXTENCODING_UTF8 ).getStr() );
 107
 108                 return false;
 109             }
 110
 111             return true;
 112         }
 113
 114         ::basegfx::B2ISize SlideBitmap::getSize() const
 115         {
 116             return ::basegfx::unotools::b2ISizeFromIntegerSize2D( mxBitmap->getSize() );
 117         }
 118
 119         void SlideBitmap::move( const ::basegfx::B2DPoint& rNewPos )
 120         {
 121             maOutputPos = rNewPos;
 122         }
 123
 124         void SlideBitmap::clip( const ::basegfx::B2DPolyPolygon& rClipPoly )
 125         {
 126             maClipPoly = rClipPoly;
 127         }
 128
 129         ::com::sun::star::uno::Reference<
 130                 ::com::sun::star::rendering::XBitmap >    SlideBitmap::getXBitmap()
 131         {
 132         return mxBitmap;
 133         }
 134
 135     }
 136 }