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 <comphelper/anytostring.hxx>
  24 #include <cppuhelper/exc_hlp.hxx>
  25
  26 #include <basegfx/point/b2dpoint.hxx>
  27 #include <basegfx/vector/b2dvector.hxx>
  28
  29 #include <com/sun/star/rendering/XCanvas.hpp>
  30 #include <com/sun/star/presentation/XSlideShowView.hpp>
  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 {
  41 namespace internal {
  42
  43 const sal_Int32 LEFT_BORDER_SPACE  = 10;
  44 const sal_Int32 LOWER_BORDER_SPACE = 10;
  45
  46 WaitSymbolSharedPtr WaitSymbol::create( const uno::Reference<rendering::XBitmap>& xBitmap,
  47                                         ScreenUpdater&                            rScreenUpdater,
  48                                         EventMultiplexer&                         rEventMultiplexer,
  49                                         const UnoViewContainer&                   rViewContainer )
  50 {
  51     WaitSymbolSharedPtr pRet(
  52         new WaitSymbol( xBitmap,
  53                         rScreenUpdater,
  54                         rViewContainer ));
  55
  56     rEventMultiplexer.addViewHandler( pRet );
  57
  58     return pRet;
  59 }
  60
  61 WaitSymbol::WaitSymbol( uno::Reference<rendering::XBitmap> const &   xBitmap,
  62                         ScreenUpdater&                               rScreenUpdater,
  63                         const UnoViewContainer&                      rViewContainer ) :
  64     mxBitmap(xBitmap),
  65     maViews(),
  66     mrScreenUpdater( rScreenUpdater ),
  67     mbVisible(false)
  68 {
  69     for( const auto& pView : rViewContainer )
  70         viewAdded( pView );
  71 }
  72
  73 void WaitSymbol::setVisible( const bool bVisible )
  74 {
  75     if( mbVisible != bVisible )
  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
  95 basegfx::B2DPoint WaitSymbol::calcSpritePos(
  96     UnoViewSharedPtr const & rView ) const
  97 {
  98     const awt::Rectangle aViewArea( rView->getUnoView()->getCanvasArea() );
  99     return basegfx::B2DPoint(
 100         aViewArea.X + std::min<sal_Int32>( aViewArea.Width, LEFT_BORDER_SPACE ),
 101         aViewArea.X + std::max<sal_Int32>( 0,
 102                                            aViewArea.Height
 103                                             - mxBitmap->getSize().Height
 104                                             - LOWER_BORDER_SPACE ) );
 105 }
 106
 107 void WaitSymbol::viewAdded( const UnoViewSharedPtr& rView )
 108 {
 109     cppcanvas::CustomSpriteSharedPtr sprite;
 110
 111     try
 112     {
 113         const geometry::IntegerSize2D spriteSize( mxBitmap->getSize() );
 114         sprite = rView->createSprite( basegfx::B2DVector( spriteSize.Width,
 115                                                           spriteSize.Height ),
 116                                       1000.0 ); // sprite should be in front of all
 117                                                 // other sprites
 118         rendering::ViewState viewState;
 119         canvas::tools::initViewState( viewState );
 120         rendering::RenderState renderState;
 121         canvas::tools::initRenderState( renderState );
 122         sprite->getContentCanvas()->getUNOCanvas()->drawBitmap(
 123             mxBitmap, viewState, renderState );
 124
 125         sprite->setAlpha( 0.9 );
 126         sprite->movePixel( calcSpritePos( rView ) );
 127         if( mbVisible )
 128             sprite->show();
 129     }
 130     catch( uno::Exception& )
 131     {
 132         SAL_WARN( "slideshow", comphelper::anyToString( cppu::getCaughtException() ) );
 133     }
 134
 135     maViews.emplace_back( rView, sprite );
 136 }
 137
 138 void WaitSymbol::viewRemoved( const UnoViewSharedPtr& rView )
 139 {
 140     maViews.erase(
 141         std::remove_if(
 142             maViews.begin(), maViews.end(),
 143             [&rView]
 144             ( const ViewsVecT::value_type& cp )
 145             { return rView == cp.first; } ),
 146         maViews.end() );
 147 }
 148
 149 void WaitSymbol::viewChanged( const UnoViewSharedPtr& rView )
 150 {
 151     // find entry corresponding to modified view
 152     ViewsVecT::iterator aModifiedEntry(
 153         std::find_if(
 154             maViews.begin(),
 155             maViews.end(),
 156             [&rView]
 157             ( const ViewsVecT::value_type& cp )
 158             { return rView == cp.first; } ) );
 159
 160     OSL_ASSERT( aModifiedEntry != maViews.end() );
 161     if( aModifiedEntry == maViews.end() )
 162         return;
 163
 164     if( aModifiedEntry->second )
 165         aModifiedEntry->second->movePixel(
 166             calcSpritePos(aModifiedEntry->first) );
 167 }
 168
 169 void WaitSymbol::viewsChanged()
 170 {
 171     // reposition sprites on all views
 172     for( const auto& rView : maViews )
 173     {
 174         if( rView.second )
 175             rView.second->movePixel(
 176                 calcSpritePos( rView.first ) );
 177     }
 178 }
 179
 180 } // namespace internal
 181 } // namespace slideshow
 182
 183 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */