slideshow/source/engine/waitsymbol.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 <canvas/canvastools.hxx>
  22
  23 #include <cppcanvas/customsprite.hxx>
  24
  25 #include <basegfx/point/b2dpoint.hxx>
  26 #include <basegfx/vector/b2dvector.hxx>
  27
  28 #include <com/sun/star/rendering/XCanvas.hpp>
  29 #include <com/sun/star/presentation/XSlideShowView.hpp>
  30 #include <tools/diagnose_ex.h>
  31
  32 #include "waitsymbol.hxx"
  33 #include <eventmultiplexer.hxx>
  34
  35 #include <algorithm>
  36
  37
  38 using namespace com::sun::star;
  39
  40 namespace slideshow::internal {
  41
  42 const sal_Int32 LEFT_BORDER_SPACE  = 10;
  43 const sal_Int32 LOWER_BORDER_SPACE = 10;
  44
  45 WaitSymbolSharedPtr WaitSymbol::create( const uno::Reference<rendering::XBitmap>& xBitmap,
  46                                         ScreenUpdater&                            rScreenUpdater,
  47                                         EventMultiplexer&                         rEventMultiplexer,
  48                                         const UnoViewContainer&                   rViewContainer )
  49 {
  50     WaitSymbolSharedPtr pRet(
  51         new WaitSymbol( xBitmap,
  52                         rScreenUpdater,
  53                         rViewContainer ));
  54
  55     rEventMultiplexer.addViewHandler( pRet );
  56
  57     return pRet;
  58 }
  59
  60 WaitSymbol::WaitSymbol( uno::Reference<rendering::XBitmap> const &   xBitmap,
  61                         ScreenUpdater&                               rScreenUpdater,
  62                         const UnoViewContainer&                      rViewContainer ) :
  63     mxBitmap(xBitmap),
  64     maViews(),
  65     mrScreenUpdater( rScreenUpdater ),
  66     mbVisible(false)
  67 {
  68     for( const auto& pView : rViewContainer )
  69         viewAdded( pView );
  70 }
  71
  72 void WaitSymbol::setVisible( const bool bVisible )
  73 {
  74     if( mbVisible == bVisible )
  75         return;
  76
  77     mbVisible = bVisible;
  78
  79     for( const auto& rView : maViews )
  80     {
  81         if( rView.second )
  82         {
  83             if( bVisible )
  84                 rView.second->show();
  85             else
  86                 rView.second->hide();
  87         }
  88     }
  89
  90     // sprites changed, need a screen update for this frame.
  91     mrScreenUpdater.requestImmediateUpdate();
  92 }
  93
  94 basegfx::B2DPoint WaitSymbol::calcSpritePos(
  95     UnoViewSharedPtr const & rView ) const
  96 {
  97     const awt::Rectangle aViewArea( rView->getUnoView()->getCanvasArea() );
  98     return basegfx::B2DPoint(
  99         aViewArea.X + std::min<sal_Int32>( aViewArea.Width, LEFT_BORDER_SPACE ),
 100         aViewArea.X + std::max<sal_Int32>( 0,
 101                                            aViewArea.Height
 102                                             - mxBitmap->getSize().Height
 103                                             - LOWER_BORDER_SPACE ) );
 104 }
 105
 106 void WaitSymbol::viewAdded( const UnoViewSharedPtr& rView )
 107 {
 108     cppcanvas::CustomSpriteSharedPtr sprite;
 109
 110     try
 111     {
 112         const geometry::IntegerSize2D spriteSize( mxBitmap->getSize() );
 113         sprite = rView->createSprite( basegfx::B2DVector( spriteSize.Width,
 114                                                           spriteSize.Height ),
 115                                       1000.0 ); // sprite should be in front of all
 116                                                 // other sprites
 117         rendering::ViewState viewState;
 118         canvas::tools::initViewState( viewState );
 119         rendering::RenderState renderState;
 120         canvas::tools::initRenderState( renderState );
 121         sprite->getContentCanvas()->getUNOCanvas()->drawBitmap(
 122             mxBitmap, viewState, renderState );
 123
 124         sprite->setAlpha( 0.9 );
 125         sprite->movePixel( calcSpritePos( rView ) );
 126         if( mbVisible )
 127             sprite->show();
 128     }
 129     catch( uno::Exception& )
 130     {
 131         TOOLS_WARN_EXCEPTION( "slideshow", "" );
 132     }
 133
 134     maViews.emplace_back( rView, sprite );
 135 }
 136
 137 void WaitSymbol::viewRemoved( const UnoViewSharedPtr& rView )
 138 {
 139     maViews.erase(
 140         std::remove_if(
 141             maViews.begin(), maViews.end(),
 142             [&rView]
 143             ( const ViewsVecT::value_type& cp )
 144             { return rView == cp.first; } ),
 145         maViews.end() );
 146 }
 147
 148 void WaitSymbol::viewChanged( const UnoViewSharedPtr& rView )
 149 {
 150     // find entry corresponding to modified view
 151     ViewsVecT::iterator aModifiedEntry(
 152         std::find_if(
 153             maViews.begin(),
 154             maViews.end(),
 155             [&rView]
 156             ( const ViewsVecT::value_type& cp )
 157             { return rView == cp.first; } ) );
 158
 159     OSL_ASSERT( aModifiedEntry != maViews.end() );
 160     if( aModifiedEntry == maViews.end() )
 161         return;
 162
 163     if( aModifiedEntry->second )
 164         aModifiedEntry->second->movePixel(
 165             calcSpritePos(aModifiedEntry->first) );
 166 }
 167
 168 void WaitSymbol::viewsChanged()
 169 {
 170     // reposition sprites on all views
 171     for( const auto& rView : maViews )
 172     {
 173         if( rView.second )
 174             rView.second->movePixel(
 175                 calcSpritePos( rView.first ) );
 176     }
 177 }
 178
 179 } // namespace slideshow::internal
 180
 181 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */