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