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 <boost/current_function.hpp>
  22 #include <canvas/canvastools.hxx>
  23
  24 #include <comphelper/anytostring.hxx>
  25 #include <cppuhelper/exc_hlp.hxx>
  26
  27 #include <basegfx/point/b2dpoint.hxx>
  28 #include <basegfx/vector/b2dvector.hxx>
  29
  30 #include <com/sun/star/rendering/XCanvas.hpp>
  31 #include <com/sun/star/presentation/XSlideShowView.hpp>
  32
  33 #include "waitsymbol.hxx"
  34 #include "eventmultiplexer.hxx"
  35
  36 #include <o3tl/compat_functional.hxx>
  37 #include <algorithm>
  38
  39
  40 using namespace com::sun::star;
  41
  42 namespace slideshow {
  43 namespace internal {
  44
  45 const sal_Int32 LEFT_BORDER_SPACE  = 10;
  46 const sal_Int32 LOWER_BORDER_SPACE = 10;
  47
  48 WaitSymbolSharedPtr WaitSymbol::create( const uno::Reference<rendering::XBitmap>& xBitmap,
  49                                         ScreenUpdater&                            rScreenUpdater,
  50                                         EventMultiplexer&                         rEventMultiplexer,
  51                                         const UnoViewContainer&                   rViewContainer )
  52 {
  53     WaitSymbolSharedPtr pRet(
  54         new WaitSymbol( xBitmap,
  55                         rScreenUpdater,
  56                         rViewContainer ));
  57
  58     rEventMultiplexer.addViewHandler( pRet );
  59
  60     return pRet;
  61 }
  62
  63 WaitSymbol::WaitSymbol( uno::Reference<rendering::XBitmap> const &   xBitmap,
  64                         ScreenUpdater&                               rScreenUpdater,
  65                         const UnoViewContainer&                      rViewContainer ) :
  66     mxBitmap(xBitmap),
  67     maViews(),
  68     mrScreenUpdater( rScreenUpdater ),
  69     mbVisible(false)
  70 {
  71     std::for_each( rViewContainer.begin(),
  72                    rViewContainer.end(),
  73                    boost::bind( &WaitSymbol::viewAdded,
  74                                 this,
  75                                 _1 ));
  76 }
  77
  78 void WaitSymbol::setVisible( const bool bVisible )
  79 {
  80     if( mbVisible != bVisible )
  81     {
  82         mbVisible = bVisible;
  83
  84         ViewsVecT::const_iterator       aIter( maViews.begin() );
  85         ViewsVecT::const_iterator const aEnd ( maViews.end() );
  86         while( aIter != aEnd )
  87         {
  88             if( aIter->second )
  89             {
  90                 if( bVisible )
  91                     aIter->second->show();
  92                 else
  93                     aIter->second->hide();
  94             }
  95
  96             ++aIter;
  97         }
  98
  99         // sprites changed, need a screen update for this frame.
 100         mrScreenUpdater.requestImmediateUpdate();
 101     }
 102 }
 103
 104 basegfx::B2DPoint WaitSymbol::calcSpritePos(
 105     UnoViewSharedPtr const & rView ) const
 106 {
 107     const awt::Rectangle aViewArea( rView->getUnoView()->getCanvasArea() );
 108     return basegfx::B2DPoint(
 109         aViewArea.X + std::min<sal_Int32>( aViewArea.Width, LEFT_BORDER_SPACE ),
 110         aViewArea.X + std::max<sal_Int32>( 0,
 111                                            aViewArea.Height
 112                                             - mxBitmap->getSize().Height
 113                                             - LOWER_BORDER_SPACE ) );
 114 }
 115
 116 void WaitSymbol::viewAdded( const UnoViewSharedPtr& rView )
 117 {
 118     cppcanvas::CustomSpriteSharedPtr sprite;
 119
 120     try
 121     {
 122         const geometry::IntegerSize2D spriteSize( mxBitmap->getSize() );
 123         sprite = rView->createSprite( basegfx::B2DVector( spriteSize.Width,
 124                                                           spriteSize.Height ),
 125                                       1000.0 ); // sprite should be in front of all
 126                                                 // other sprites
 127         rendering::ViewState viewState;
 128         canvas::tools::initViewState( viewState );
 129         rendering::RenderState renderState;
 130         canvas::tools::initRenderState( renderState );
 131         sprite->getContentCanvas()->getUNOCanvas()->drawBitmap(
 132             mxBitmap, viewState, renderState );
 133
 134         sprite->setAlpha( 0.9 );
 135         sprite->movePixel( calcSpritePos( rView ) );
 136         if( mbVisible )
 137             sprite->show();
 138     }
 139     catch( uno::Exception& )
 140     {
 141         OSL_FAIL( OUStringToOString(
 142                         comphelper::anyToString( cppu::getCaughtException() ),
 143                         RTL_TEXTENCODING_UTF8 ).getStr() );
 144     }
 145
 146     maViews.push_back( ViewsVecT::value_type( rView, sprite ) );
 147 }
 148
 149 void WaitSymbol::viewRemoved( const UnoViewSharedPtr& rView )
 150 {
 151     maViews.erase(
 152         std::remove_if(
 153             maViews.begin(), maViews.end(),
 154             boost::bind(
 155                 std::equal_to<UnoViewSharedPtr>(),
 156                 rView,
 157                 // select view:
 158                 boost::bind( o3tl::select1st<ViewsVecT::value_type>(), _1 ) ) ),
 159         maViews.end() );
 160 }
 161
 162 void WaitSymbol::viewChanged( const UnoViewSharedPtr& rView )
 163 {
 164     // find entry corresponding to modified view
 165     ViewsVecT::iterator aModifiedEntry(
 166         std::find_if(
 167             maViews.begin(),
 168             maViews.end(),
 169             boost::bind(
 170                 std::equal_to<UnoViewSharedPtr>(),
 171                 rView,
 172                 // select view:
 173                 boost::bind( o3tl::select1st<ViewsVecT::value_type>(), _1 ))));
 174
 175     OSL_ASSERT( aModifiedEntry != maViews.end() );
 176     if( aModifiedEntry == maViews.end() )
 177         return;
 178
 179     if( aModifiedEntry->second )
 180         aModifiedEntry->second->movePixel(
 181             calcSpritePos(aModifiedEntry->first) );
 182 }
 183
 184 void WaitSymbol::viewsChanged()
 185 {
 186     // reposition sprites on all views
 187     ViewsVecT::const_iterator       aIter( maViews.begin() );
 188     ViewsVecT::const_iterator const aEnd ( maViews.end() );
 189     while( aIter != aEnd )
 190     {
 191         if( aIter->second )
 192             aIter->second->movePixel(
 193                 calcSpritePos( aIter->first ));
 194         ++aIter;
 195     }
 196 }
 197
 198 } // namespace internal
 199 } // namespace slideshow
 200
 201 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */