cppcanvas/source/wrapper/implsprite.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/utils/canvastools.hxx>
  22 #include <basegfx/polygon/b2dpolypolygon.hxx>
  23 #include <canvas/canvastools.hxx>
  24 #include <utility>
  25
  26 #include "implsprite.hxx"
  27
  28
  29 using namespace ::com::sun::star;
  30
  31 namespace cppcanvas::internal
  32 {
  33
  34         ImplSprite::ImplSprite( const uno::Reference< rendering::XSpriteCanvas >&       rParentCanvas,
  35                                 uno::Reference< rendering::XSprite >              rSprite,
  36                                 ImplSpriteCanvas::TransformationArbiterSharedPtr  xTransformArbiter ) :
  37             mxSprite(std::move( rSprite )),
  38             mpTransformArbiter(std::move( xTransformArbiter ))
  39         {
  40             // Avoiding ternary operator in initializer list (Solaris
  41             // compiler bug, when function call and temporary is
  42             // involved)
  43             if( rParentCanvas.is() )
  44                 mxGraphicDevice = rParentCanvas->getDevice();
  45
  46             OSL_ENSURE( rParentCanvas.is() , "ImplSprite::ImplSprite(): Invalid canvas");
  47             OSL_ENSURE( mxGraphicDevice.is(), "ImplSprite::ImplSprite(): Invalid graphic device");
  48             OSL_ENSURE( mxSprite.is(), "ImplSprite::ImplSprite(): Invalid sprite");
  49             OSL_ENSURE( mpTransformArbiter, "ImplSprite::ImplSprite(): Invalid transformation arbiter");
  50         }
  51
  52         ImplSprite::~ImplSprite()
  53         {
  54             // hide the sprite on the canvas. If we don't hide the
  55             // sprite, it will stay on the canvas forever, since the
  56             // canvas naturally keeps a list of visible sprites
  57             // (otherwise, it wouldn't be able to paint them
  58             // autonomously)
  59             if( mxSprite.is() )
  60                 mxSprite->hide();
  61         }
  62
  63         void ImplSprite::setAlpha( const double& rAlpha )
  64         {
  65             OSL_ENSURE( mxSprite.is(), "ImplSprite::setAlpha(): Invalid sprite");
  66
  67             if( mxSprite.is() )
  68                 mxSprite->setAlpha( rAlpha );
  69         }
  70
  71         void ImplSprite::movePixel( const ::basegfx::B2DPoint& rNewPos )
  72         {
  73             OSL_ENSURE( mxSprite.is(), "ImplSprite::movePixel(): Invalid sprite");
  74
  75             if( mxSprite.is() )
  76             {
  77                 rendering::ViewState    aViewState;
  78                 rendering::RenderState  aRenderState;
  79
  80                 ::canvas::tools::initViewState( aViewState );
  81                 ::canvas::tools::initRenderState( aRenderState );
  82
  83                 mxSprite->move( ::basegfx::unotools::point2DFromB2DPoint( rNewPos ),
  84                                 aViewState,
  85                                 aRenderState );
  86             }
  87         }
  88
  89         void ImplSprite::move( const ::basegfx::B2DPoint& rNewPos )
  90         {
  91             OSL_ENSURE( mxSprite.is(), "ImplSprite::move(): Invalid sprite");
  92
  93             if( !mxSprite.is() )
  94                 return;
  95
  96             rendering::ViewState    aViewState;
  97             rendering::RenderState  aRenderState;
  98
  99             ::canvas::tools::initViewState( aViewState );
 100             ::canvas::tools::initRenderState( aRenderState );
 101
 102             ::canvas::tools::setViewStateTransform( aViewState,
 103                                                     mpTransformArbiter->getTransformation() );
 104
 105             mxSprite->move( ::basegfx::unotools::point2DFromB2DPoint( rNewPos ),
 106                             aViewState,
 107                             aRenderState );
 108         }
 109
 110         void ImplSprite::transform( const ::basegfx::B2DHomMatrix& rMatrix )
 111         {
 112             OSL_ENSURE( mxSprite.is(), "ImplSprite::transform(): Invalid sprite");
 113
 114             if( mxSprite.is() )
 115             {
 116                 geometry::AffineMatrix2D aMatrix;
 117
 118                 mxSprite->transform( ::basegfx::unotools::affineMatrixFromHomMatrix( aMatrix,
 119                                                                                      rMatrix ) );
 120             }
 121         }
 122
 123         void ImplSprite::setClipPixel( const ::basegfx::B2DPolyPolygon& rClipPoly )
 124         {
 125             OSL_ENSURE( mxGraphicDevice.is(), "ImplSprite::setClip(): Invalid canvas");
 126             OSL_ENSURE( mxSprite.is(), "ImplSprite::transform(): Invalid sprite");
 127
 128             if( mxSprite.is() && mxGraphicDevice.is() )
 129                 mxSprite->clip( ::basegfx::unotools::xPolyPolygonFromB2DPolyPolygon( mxGraphicDevice,
 130                                                                                          rClipPoly ) );
 131         }
 132
 133         void ImplSprite::setClip( const ::basegfx::B2DPolyPolygon& rClipPoly )
 134         {
 135             OSL_ENSURE( mxGraphicDevice.is(), "ImplSprite::setClip(): Invalid canvas");
 136             OSL_ENSURE( mxSprite.is(), "ImplSprite::transform(): Invalid sprite");
 137
 138             if( !(mxSprite.is() && mxGraphicDevice.is()) )
 139                 return;
 140
 141             ::basegfx::B2DPolyPolygon   aTransformedClipPoly( rClipPoly );
 142
 143             // extract linear part of canvas view transformation (linear means:
 144             // without translational components)
 145             ::basegfx::B2DHomMatrix     aViewTransform( mpTransformArbiter->getTransformation() );
 146             aViewTransform.set( 0, 2, 0.0 );
 147             aViewTransform.set( 1, 2, 0.0 );
 148
 149             // transform polygon from view to device coordinate space
 150             aTransformedClipPoly.transform( aViewTransform );
 151
 152             mxSprite->clip( ::basegfx::unotools::xPolyPolygonFromB2DPolyPolygon( mxGraphicDevice,
 153                                                                                  aTransformedClipPoly ) );
 154         }
 155
 156         void ImplSprite::setClip()
 157         {
 158             OSL_ENSURE( mxGraphicDevice.is(), "ImplSprite::setClip(): Invalid canvas");
 159             OSL_ENSURE( mxSprite.is(), "ImplSprite::setClip(): Invalid sprite");
 160
 161             if( mxSprite.is() && mxGraphicDevice.is() )
 162                 mxSprite->clip( uno::Reference< rendering::XPolyPolygon2D >() );
 163         }
 164
 165         void ImplSprite::show()
 166         {
 167             OSL_ENSURE( mxSprite.is(), "ImplSprite::show(): Invalid sprite");
 168
 169             if( mxSprite.is() )
 170                 mxSprite->show();
 171         }
 172
 173         void ImplSprite::hide()
 174         {
 175             OSL_ENSURE( mxSprite.is(), "ImplSprite::hide(): Invalid sprite");
 176
 177             if( mxSprite.is() )
 178                 mxSprite->hide();
 179         }
 180
 181         void ImplSprite::setPriority( double fPriority )
 182         {
 183             OSL_ENSURE( mxSprite.is(), "ImplSprite::setPriority(): Invalid sprite");
 184
 185             if( mxSprite.is() )
 186                 mxSprite->setPriority(fPriority);
 187         }
 188 }
 189
 190 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */