LCOV - code coverage report
Current view: top level - slideshow/source/engine/shapes - viewbackgroundshape.cxx (source / functions) Hit Total Coverage
Test: commit e02a6cb2c3e2b23b203b422e4e0680877f232636 Lines: 0 56 0.0 %
Date: 2014-04-14 Functions: 0 4 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : 
      21             : // must be first
      22             : #include <canvas/debug.hxx>
      23             : #include <tools/diagnose_ex.h>
      24             : 
      25             : #include "viewbackgroundshape.hxx"
      26             : #include "tools.hxx"
      27             : 
      28             : #include <rtl/math.hxx>
      29             : 
      30             : #include <comphelper/anytostring.hxx>
      31             : #include <cppuhelper/exc_hlp.hxx>
      32             : 
      33             : #include <basegfx/polygon/b2dpolygontools.hxx>
      34             : #include <basegfx/polygon/b2dpolygon.hxx>
      35             : #include <basegfx/numeric/ftools.hxx>
      36             : #include <basegfx/matrix/b2dhommatrix.hxx>
      37             : #include <basegfx/matrix/b2dhommatrixtools.hxx>
      38             : 
      39             : #include <com/sun/star/rendering/XCanvas.hpp>
      40             : 
      41             : #include <canvas/verbosetrace.hxx>
      42             : #include <canvas/canvastools.hxx>
      43             : #include <cppcanvas/vclfactory.hxx>
      44             : #include <cppcanvas/basegfxfactory.hxx>
      45             : #include <cppcanvas/renderer.hxx>
      46             : #include <cppcanvas/bitmap.hxx>
      47             : 
      48             : using namespace ::com::sun::star;
      49             : 
      50             : 
      51             : namespace slideshow
      52             : {
      53             :     namespace internal
      54             :     {
      55             : 
      56           0 :         bool ViewBackgroundShape::prefetch( const ::cppcanvas::CanvasSharedPtr& rDestinationCanvas,
      57             :                                             const GDIMetaFileSharedPtr&         rMtf ) const
      58             :         {
      59             :             SAL_INFO( "slideshow", "::presentation::internal::ViewBackgroundShape::prefetch()" );
      60           0 :             ENSURE_OR_RETURN_FALSE( rMtf,
      61             :                                "ViewBackgroundShape::prefetch(): no valid metafile!" );
      62             : 
      63             :             const ::basegfx::B2DHomMatrix& rCanvasTransform(
      64           0 :                 mpViewLayer->getTransformation() );
      65             : 
      66           0 :             if( !mxBitmap.is() ||
      67           0 :                 rMtf != mpLastMtf ||
      68           0 :                 rCanvasTransform != maLastTransformation )
      69             :             {
      70             :                 // buffered bitmap is invalid, re-create
      71             : 
      72             :                 // determine transformed page bounds
      73           0 :                 ::basegfx::B2DRectangle aTmpRect;
      74             :                 ::canvas::tools::calcTransformedRectBounds( aTmpRect,
      75             :                                                             maBounds,
      76           0 :                                                             rCanvasTransform );
      77             : 
      78             :                 // determine pixel size of bitmap (choose it one pixel
      79             :                 // larger, as polygon rendering takes one pixel more
      80             :                 // to the right and to the bottom)
      81             :                 const ::basegfx::B2ISize aBmpSizePixel(
      82           0 :                     ::basegfx::fround( aTmpRect.getRange().getX() + 1),
      83           0 :                     ::basegfx::fround( aTmpRect.getRange().getY() + 1) );
      84             : 
      85             :                 // create a bitmap of appropriate size
      86             :                 ::cppcanvas::BitmapSharedPtr pBitmap(
      87           0 :                     ::cppcanvas::BaseGfxFactory::getInstance().createBitmap(
      88             :                         rDestinationCanvas,
      89           0 :                         aBmpSizePixel ) );
      90             : 
      91           0 :                 ENSURE_OR_THROW( pBitmap,
      92             :                                   "ViewBackgroundShape::prefetch(): Cannot create background bitmap" );
      93             : 
      94           0 :                 ::cppcanvas::BitmapCanvasSharedPtr pBitmapCanvas( pBitmap->getBitmapCanvas() );
      95             : 
      96           0 :                 ENSURE_OR_THROW( pBitmapCanvas,
      97             :                                   "ViewBackgroundShape::prefetch(): Cannot create background bitmap canvas" );
      98             : 
      99             :                 // clear bitmap
     100             :                 initSlideBackground( pBitmapCanvas,
     101           0 :                                      aBmpSizePixel );
     102             : 
     103             :                 // apply linear part of destination canvas transformation (linear means in this context:
     104             :                 // transformation without any translational components)
     105           0 :                 ::basegfx::B2DHomMatrix aLinearTransform( rCanvasTransform );
     106           0 :                 aLinearTransform.set( 0, 2, 0.0 );
     107           0 :                 aLinearTransform.set( 1, 2, 0.0 );
     108           0 :                 pBitmapCanvas->setTransformation( aLinearTransform );
     109             : 
     110             :                 const basegfx::B2DHomMatrix aShapeTransform(basegfx::tools::createScaleTranslateB2DHomMatrix(
     111             :                     maBounds.getWidth(), maBounds.getHeight(),
     112           0 :                     maBounds.getMinX(), maBounds.getMinY()));
     113             : 
     114             :                 ::cppcanvas::RendererSharedPtr pRenderer(
     115           0 :                     ::cppcanvas::VCLFactory::getInstance().createRenderer(
     116             :                         pBitmapCanvas,
     117           0 :                         *rMtf.get(),
     118           0 :                         ::cppcanvas::Renderer::Parameters() ) );
     119             : 
     120           0 :                 ENSURE_OR_RETURN_FALSE( pRenderer,
     121             :                                    "ViewBackgroundShape::prefetch(): Could not create Renderer" );
     122             : 
     123           0 :                 pRenderer->setTransformation( aShapeTransform );
     124           0 :                 pRenderer->draw();
     125             : 
     126           0 :                 mxBitmap = pBitmap->getUNOBitmap();
     127             :             }
     128             : 
     129           0 :             mpLastMtf            = rMtf;
     130           0 :             maLastTransformation = rCanvasTransform;
     131             : 
     132           0 :             return mxBitmap.is();
     133             :         }
     134             : 
     135           0 :         ViewBackgroundShape::ViewBackgroundShape( const ViewLayerSharedPtr&         rViewLayer,
     136             :                                                   const ::basegfx::B2DRectangle&    rShapeBounds ) :
     137             :             mpViewLayer( rViewLayer ),
     138             :             mxBitmap(),
     139             :             mpLastMtf(),
     140             :             maLastTransformation(),
     141           0 :             maBounds( rShapeBounds )
     142             :         {
     143           0 :             ENSURE_OR_THROW( mpViewLayer, "ViewBackgroundShape::ViewBackgroundShape(): Invalid View" );
     144           0 :             ENSURE_OR_THROW( mpViewLayer->getCanvas(), "ViewBackgroundShape::ViewBackgroundShape(): Invalid ViewLayer canvas" );
     145           0 :         }
     146             : 
     147           0 :         ViewLayerSharedPtr ViewBackgroundShape::getViewLayer() const
     148             :         {
     149           0 :             return mpViewLayer;
     150             :         }
     151             : 
     152           0 :         bool ViewBackgroundShape::render( const GDIMetaFileSharedPtr& rMtf ) const
     153             :         {
     154             :             SAL_INFO( "slideshow", "::presentation::internal::ViewBackgroundShape::draw()" );
     155             : 
     156           0 :             const ::cppcanvas::CanvasSharedPtr& rDestinationCanvas( mpViewLayer->getCanvas() );
     157             : 
     158           0 :             if( !prefetch( rDestinationCanvas, rMtf ) )
     159           0 :                 return false;
     160             : 
     161           0 :             ENSURE_OR_RETURN_FALSE( mxBitmap.is(),
     162             :                                "ViewBackgroundShape::draw(): Invalid background bitmap" );
     163             : 
     164           0 :             ::basegfx::B2DHomMatrix aTransform( mpViewLayer->getTransformation() );
     165             : 
     166             :             // invert the linear part of the view transformation
     167             :             // (i.e. the view transformation without translational
     168             :             // components), to be able to leave the canvas
     169             :             // transformation intact (would otherwise destroy possible
     170             :             // clippings, as the clip polygon is relative to the view
     171             :             // coordinate system).
     172           0 :             aTransform.set(0,2, 0.0 );
     173           0 :             aTransform.set(1,2, 0.0 );
     174           0 :             aTransform.invert();
     175             : 
     176           0 :             rendering::RenderState aRenderState;
     177           0 :             ::canvas::tools::initRenderState( aRenderState );
     178             : 
     179           0 :             ::canvas::tools::setRenderStateTransform( aRenderState, aTransform );
     180             : 
     181             :             try
     182             :             {
     183           0 :                 rDestinationCanvas->getUNOCanvas()->drawBitmap( mxBitmap,
     184           0 :                                                                 rDestinationCanvas->getViewState(),
     185           0 :                                                                 aRenderState );
     186             :             }
     187           0 :             catch( uno::Exception& )
     188             :             {
     189             :                 OSL_FAIL( OUStringToOString(
     190             :                                 comphelper::anyToString( cppu::getCaughtException() ),
     191             :                                 RTL_TEXTENCODING_UTF8 ).getStr() );
     192             : 
     193           0 :                 return false;
     194             :             }
     195             : 
     196           0 :             return true;
     197             :         }
     198             : 
     199             :     }
     200             : }
     201             : 
     202             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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