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 #include <sal/log.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 #include <tools/diagnose_ex.h>
  33
  34 #include "waitsymbol.hxx"
  35 #include <eventmultiplexer.hxx>
  36
  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     for( const auto& pView : rViewContainer )
  72         viewAdded( pView );
  73 }
  74
  75 void WaitSymbol::setVisible( const bool bVisible )
  76 {
  77     if( mbVisible == bVisible )
  78         return;
  79
  80     mbVisible = bVisible;
  81
  82     for( const auto& rView : maViews )
  83     {
  84         if( rView.second )
  85         {
  86             if( bVisible )
  87                 rView.second->show();
  88             else
  89                 rView.second->hide();
  90         }
  91     }
  92
  93     // sprites changed, need a screen update for this frame.
  94     mrScreenUpdater.requestImmediateUpdate();
  95 }
  96
  97 basegfx::B2DPoint WaitSymbol::calcSpritePos(
  98     UnoViewSharedPtr const & rView ) const
  99 {
 100     const awt::Rectangle aViewArea( rView->getUnoView()->getCanvasArea() );
 101     return basegfx::B2DPoint(
 102         aViewArea.X + std::min<sal_Int32>( aViewArea.Width, LEFT_BORDER_SPACE ),
 103         aViewArea.X + std::max<sal_Int32>( 0,
 104                                            aViewArea.Height
 105                                             - mxBitmap->getSize().Height
 106                                             - LOWER_BORDER_SPACE ) );
 107 }
 108
 109 void WaitSymbol::viewAdded( const UnoViewSharedPtr& rView )
 110 {
 111     cppcanvas::CustomSpriteSharedPtr sprite;
 112
 113     try
 114     {
 115         const geometry::IntegerSize2D spriteSize( mxBitmap->getSize() );
 116         sprite = rView->createSprite( basegfx::B2DVector( spriteSize.Width,
 117                                                           spriteSize.Height ),
 118                                       1000.0 ); // sprite should be in front of all
 119                                                 // other sprites
 120         rendering::ViewState viewState;
 121         canvas::tools::initViewState( viewState );
 122         rendering::RenderState renderState;
 123         canvas::tools::initRenderState( renderState );
 124         sprite->getContentCanvas()->getUNOCanvas()->drawBitmap(
 125             mxBitmap, viewState, renderState );
 126
 127         sprite->setAlpha( 0.9 );
 128         sprite->movePixel( calcSpritePos( rView ) );
 129         if( mbVisible )
 130             sprite->show();
 131     }
 132     catch( uno::Exception& )
 133     {
 134         TOOLS_WARN_EXCEPTION( "slideshow", "" );
 135     }
 136
 137     maViews.emplace_back( rView, sprite );
 138 }
 139
 140 void WaitSymbol::viewRemoved( const UnoViewSharedPtr& rView )
 141 {
 142     maViews.erase(
 143         std::remove_if(
 144             maViews.begin(), maViews.end(),
 145             [&rView]
 146             ( const ViewsVecT::value_type& cp )
 147             { return rView == cp.first; } ),
 148         maViews.end() );
 149 }
 150
 151 void WaitSymbol::viewChanged( const UnoViewSharedPtr& rView )
 152 {
 153     // find entry corresponding to modified view
 154     ViewsVecT::iterator aModifiedEntry(
 155         std::find_if(
 156             maViews.begin(),
 157             maViews.end(),
 158             [&rView]
 159             ( const ViewsVecT::value_type& cp )
 160             { return rView == cp.first; } ) );
 161
 162     OSL_ASSERT( aModifiedEntry != maViews.end() );
 163     if( aModifiedEntry == maViews.end() )
 164         return;
 165
 166     if( aModifiedEntry->second )
 167         aModifiedEntry->second->movePixel(
 168             calcSpritePos(aModifiedEntry->first) );
 169 }
 170
 171 void WaitSymbol::viewsChanged()
 172 {
 173     // reposition sprites on all views
 174     for( const auto& rView : maViews )
 175     {
 176         if( rView.second )
 177             rView.second->movePixel(
 178                 calcSpritePos( rView.first ) );
 179     }
 180 }
 181
 182 } // namespace internal
 183 } // namespace slideshow
 184
 185 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */