implcanvas.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 *
 * This file incorporates work covered by the following license notice:
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 *   Licensed to the Apache Software Foundation (ASF) under one or more
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#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/polygon/b2dpolypolygon.hxx>
#include <basegfx/utils/canvastools.hxx>
 
#include <com/sun/star/rendering/XCanvas.hpp>
 
#include <canvas/canvastools.hxx>
#include <utility>
 
#include "implcanvas.hxx"
 
 
using namespace ::com::sun::star;
 
namespace cppcanvas::internal
{
 
        ImplCanvas::ImplCanvas( uno::Reference< rendering::XCanvas > xCanvas ) :
            mxCanvas(std::move( xCanvas ))
        {
            OSL_ENSURE( mxCanvas.is(), "Canvas::Canvas() invalid XCanvas" );
 
            ::canvas::tools::initViewState( maViewState );
        }
 
        ImplCanvas::~ImplCanvas()
        {
        }
 
        void ImplCanvas::setTransformation( const ::basegfx::B2DHomMatrix& rMatrix )
        {
            ::canvas::tools::setViewStateTransform( maViewState, rMatrix );
        }
 
        ::basegfx::B2DHomMatrix ImplCanvas::getTransformation() const
        {
            ::basegfx::B2DHomMatrix aMatrix;
            return ::canvas::tools::getViewStateTransform( aMatrix,
                                                           maViewState );
        }
 
        void ImplCanvas::setClip( const ::basegfx::B2DPolyPolygon& rClipPoly )
        {
            // TODO(T3): not thread-safe. B2DPolyPolygon employs copy-on-write
            maClipPolyPolygon = rClipPoly;
            maViewState.Clip.clear();
        }
 
        void ImplCanvas::setClip()
        {
            maClipPolyPolygon.reset();
            maViewState.Clip.clear();
        }
 
        ::basegfx::B2DPolyPolygon const* ImplCanvas::getClip() const
        {
            return !maClipPolyPolygon ? nullptr : &(*maClipPolyPolygon);
        }
 
        CanvasSharedPtr ImplCanvas::clone() const
        {
            return std::make_shared<ImplCanvas>( *this );
        }
 
        void ImplCanvas::clear() const
        {
            OSL_ENSURE( mxCanvas.is(), "ImplCanvas::clear(): Invalid XCanvas" );
            mxCanvas->clear();
        }
 
        uno::Reference< rendering::XCanvas > ImplCanvas::getUNOCanvas() const
        {
            OSL_ENSURE( mxCanvas.is(), "ImplCanvas::getUNOCanvas(): Invalid XCanvas" );
 
            return mxCanvas;
        }
 
        rendering::ViewState ImplCanvas::getViewState() const
        {
            if( maClipPolyPolygon && !maViewState.Clip.is() )
            {
                if( !mxCanvas.is() )
                    return maViewState;
 
                maViewState.Clip = ::basegfx::unotools::xPolyPolygonFromB2DPolyPolygon(
                    mxCanvas->getDevice(),
                    *maClipPolyPolygon );
            }
 
            return maViewState;
        }
 
}
 
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