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