cppcanvas/source/tools/canvasgraphichelper.cxx

   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 #include <canvasgraphichelper.hxx>
  22
  23 #include <com/sun/star/rendering/XGraphicDevice.hpp>
  24 #include <com/sun/star/rendering/XCanvas.hpp>
  25 #include <com/sun/star/rendering/XPolyPolygon2D.hpp>
  26
  27 #include <canvas/canvastools.hxx>
  28 #include <basegfx/tools/canvastools.hxx>
  29 #include <basegfx/matrix/b2dhommatrix.hxx>
  30
  31 #include <cppcanvas/polypolygon.hxx>
  32 #include "tools.hxx"
  33
  34
  35 using namespace ::com::sun::star;
  36
  37 /* Implementation of CanvasGraphicHelper class */
  38
  39 namespace cppcanvas
  40 {
  41
  42     namespace internal
  43     {
  44         CanvasGraphicHelper::CanvasGraphicHelper( const CanvasSharedPtr& rParentCanvas ) :
  45             maClipPolyPolygon(),
  46             mpCanvas( rParentCanvas ),
  47             mxGraphicDevice()
  48         {
  49             OSL_ENSURE( mpCanvas.get() != NULL &&
  50                         mpCanvas->getUNOCanvas().is(),
  51                         "CanvasGraphicHelper::CanvasGraphicHelper: no valid canvas" );
  52
  53             if( mpCanvas.get() != NULL &&
  54                 mpCanvas->getUNOCanvas().is() )
  55             {
  56                 mxGraphicDevice = mpCanvas->getUNOCanvas()->getDevice();
  57             }
  58
  59             ::canvas::tools::initRenderState( maRenderState );
  60         }
  61
  62         void CanvasGraphicHelper::setTransformation( const ::basegfx::B2DHomMatrix& rMatrix )
  63         {
  64             ::canvas::tools::setRenderStateTransform( maRenderState, rMatrix );
  65         }
  66
  67         ::basegfx::B2DHomMatrix CanvasGraphicHelper::getTransformation() const
  68         {
  69             ::basegfx::B2DHomMatrix aMatrix;
  70             return ::canvas::tools::getRenderStateTransform( aMatrix,
  71                                                              maRenderState );
  72         }
  73
  74         void CanvasGraphicHelper::setClip( const ::basegfx::B2DPolyPolygon& rClipPoly )
  75         {
  76             // TODO(T3): not thread-safe. B2DPolyPolygon employs copy-on-write
  77             maClipPolyPolygon.reset( rClipPoly );
  78             maRenderState.Clip.clear();
  79         }
  80
  81         void CanvasGraphicHelper::setClip()
  82         {
  83             maClipPolyPolygon.reset();
  84             maRenderState.Clip.clear();
  85         }
  86
  87         ::basegfx::B2DPolyPolygon const* CanvasGraphicHelper::getClip() const
  88         {
  89             return !maClipPolyPolygon ? NULL : &(*maClipPolyPolygon);
  90         }
  91
  92         const rendering::RenderState& CanvasGraphicHelper::getRenderState() const
  93         {
  94             if( maClipPolyPolygon && !maRenderState.Clip.is() )
  95             {
  96                 uno::Reference< rendering::XCanvas > xCanvas( mpCanvas->getUNOCanvas() );
  97                 if( !xCanvas.is() )
  98                     return maRenderState;
  99
 100                 maRenderState.Clip = ::basegfx::unotools::xPolyPolygonFromB2DPolyPolygon(
 101                     xCanvas->getDevice(),
 102                     *maClipPolyPolygon );
 103             }
 104
 105             return maRenderState;
 106         }
 107
 108         void CanvasGraphicHelper::setCompositeOp( CompositeOp aOp )
 109         {
 110             maRenderState.CompositeOperation = (sal_Int8)aOp;
 111         }
 112
 113         CanvasGraphic::CompositeOp CanvasGraphicHelper::getCompositeOp() const
 114         {
 115             return static_cast<CompositeOp>(maRenderState.CompositeOperation);
 116         }
 117
 118
 119
 120     }
 121 }
 122
 123 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */