cppcanvas/source/wrapper/implcanvas.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.
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   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/.
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   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 <rtl/ustring.hxx>
  22 #include <basegfx/matrix/b2dhommatrix.hxx>
  23 #include <basegfx/polygon/b2dpolypolygon.hxx>
  24 #include <basegfx/tools/canvastools.hxx>
  25
  26 #include <com/sun/star/rendering/XCanvas.hpp>
  27
  28 #include <canvas/canvastools.hxx>
  29 #include <cppcanvas/polypolygon.hxx>
  30
  31 #include "implfont.hxx"
  32 #include "implcolor.hxx"
  33 #include "implcanvas.hxx"
  34
  35
  36 using namespace ::com::sun::star;
  37
  38 namespace cppcanvas
  39 {
  40     namespace internal
  41     {
  42
  43         ImplCanvas::ImplCanvas( const uno::Reference< rendering::XCanvas >& xCanvas ) :
  44             maViewState(),
  45             maClipPolyPolygon(),
  46             mxCanvas( xCanvas )
  47         {
  48             OSL_ENSURE( mxCanvas.is(), "Canvas::Canvas() invalid XCanvas" );
  49
  50             ::canvas::tools::initViewState( maViewState );
  51         }
  52
  53         ImplCanvas::~ImplCanvas()
  54         {
  55         }
  56
  57         void ImplCanvas::setTransformation( const ::basegfx::B2DHomMatrix& rMatrix )
  58         {
  59             ::canvas::tools::setViewStateTransform( maViewState, rMatrix );
  60         }
  61
  62         ::basegfx::B2DHomMatrix ImplCanvas::getTransformation() const
  63         {
  64             ::basegfx::B2DHomMatrix aMatrix;
  65             return ::canvas::tools::getViewStateTransform( aMatrix,
  66                                                            maViewState );
  67         }
  68
  69         void ImplCanvas::setClip( const ::basegfx::B2DPolyPolygon& rClipPoly )
  70         {
  71             // TODO(T3): not thread-safe. B2DPolyPolygon employs copy-on-write
  72             maClipPolyPolygon.reset( rClipPoly );
  73             maViewState.Clip.clear();
  74         }
  75
  76         void ImplCanvas::setClip()
  77         {
  78             maClipPolyPolygon.reset();
  79             maViewState.Clip.clear();
  80         }
  81
  82         ::basegfx::B2DPolyPolygon const* ImplCanvas::getClip() const
  83         {
  84             return !maClipPolyPolygon ? NULL : &(*maClipPolyPolygon);
  85         }
  86
  87         FontSharedPtr ImplCanvas::createFont( const OUString& rFontName, const double& rCellSize ) const
  88         {
  89             return FontSharedPtr( new ImplFont( getUNOCanvas(), rFontName, rCellSize ) );
  90         }
  91
  92         ColorSharedPtr ImplCanvas::createColor() const
  93         {
  94             return ColorSharedPtr( new ImplColor( getUNOCanvas()->getDevice() ) );
  95         }
  96
  97         CanvasSharedPtr ImplCanvas::clone() const
  98         {
  99             return CanvasSharedPtr( new ImplCanvas( *this ) );
 100         }
 101
 102         void ImplCanvas::clear() const
 103         {
 104             OSL_ENSURE( mxCanvas.is(), "ImplCanvas::clear(): Invalid XCanvas" );
 105             mxCanvas->clear();
 106         }
 107
 108         uno::Reference< rendering::XCanvas > ImplCanvas::getUNOCanvas() const
 109         {
 110             OSL_ENSURE( mxCanvas.is(), "ImplCanvas::getUNOCanvas(): Invalid XCanvas" );
 111
 112             return mxCanvas;
 113         }
 114
 115         rendering::ViewState ImplCanvas::getViewState() const
 116         {
 117             if( maClipPolyPolygon && !maViewState.Clip.is() )
 118             {
 119                 if( !mxCanvas.is() )
 120                     return maViewState;
 121
 122                 maViewState.Clip = ::basegfx::unotools::xPolyPolygonFromB2DPolyPolygon(
 123                     mxCanvas->getDevice(),
 124                     *maClipPolyPolygon );
 125             }
 126
 127             return maViewState;
 128         }
 129
 130     }
 131 }
 132
 133 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */