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