slideshow/source/engine/pointersymbol.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 <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 "pointersymbol.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 PointerSymbolSharedPtr PointerSymbol::create( const uno::Reference<rendering::XBitmap>& xBitmap,
  46                                               ScreenUpdater&                            rScreenUpdater,
  47                                               EventMultiplexer&                         rEventMultiplexer,
  48                                               const UnoViewContainer&                   rViewContainer )
  49 {
  50     PointerSymbolSharedPtr pRet(
  51         new PointerSymbol( xBitmap,
  52                            rScreenUpdater,
  53                            rViewContainer ));
  54
  55     rEventMultiplexer.addViewHandler( pRet );
  56
  57     return pRet;
  58 }
  59
  60 PointerSymbol::PointerSymbol( uno::Reference<rendering::XBitmap> const &   xBitmap,
  61                               ScreenUpdater&                               rScreenUpdater,
  62                               const UnoViewContainer&                      rViewContainer ) :
  63     mxBitmap(xBitmap),
  64     maViews(),
  65     mrScreenUpdater( rScreenUpdater ),
  66     maPos(),
  67     mbVisible(false)
  68 {
  69     std::for_each( rViewContainer.begin(),
  70                    rViewContainer.end(),
  71                    boost::bind( &PointerSymbol::viewAdded,
  72                                 this,
  73                                 _1 ));
  74 }
  75
  76 void PointerSymbol::setVisible( const bool bVisible )
  77 {
  78     if( mbVisible != bVisible )
  79     {
  80         mbVisible = bVisible;
  81
  82         ViewsVecT::const_iterator       aIter( maViews.begin() );
  83         ViewsVecT::const_iterator const aEnd ( maViews.end() );
  84         while( aIter != aEnd )
  85         {
  86             if( aIter->second )
  87             {
  88                 if( bVisible )
  89                     aIter->second->show();
  90                 else
  91                     aIter->second->hide();
  92             }
  93
  94             ++aIter;
  95         }
  96
  97         // sprites changed, need a screen update for this frame.
  98         mrScreenUpdater.requestImmediateUpdate();
  99     }
 100 }
 101
 102 basegfx::B2DPoint PointerSymbol::calcSpritePos(UnoViewSharedPtr const & rView) const
 103 {
 104     const awt::Rectangle aViewArea( rView->getUnoView()->getCanvasArea() );
 105     const geometry::IntegerSize2D realTranslationOffset ( rView->getTranslationOffset() );
 106
 107     return basegfx::B2DPoint(
 108         realTranslationOffset.Width + ((aViewArea.Width - aViewArea.X) - 2 * realTranslationOffset.Width) * maPos.X,
 109         realTranslationOffset.Height + ((aViewArea.Height - aViewArea.Y) - 2 * realTranslationOffset.Height) * maPos.Y);
 110 }
 111
 112 void PointerSymbol::viewAdded( const UnoViewSharedPtr& rView )
 113 {
 114     cppcanvas::CustomSpriteSharedPtr sprite;
 115
 116     try
 117     {
 118         const geometry::IntegerSize2D spriteSize( mxBitmap->getSize() );
 119         sprite = rView->createSprite( basegfx::B2DVector( spriteSize.Width,
 120                                                           spriteSize.Height ),
 121                                       1000.0 ); // sprite should be in front of all
 122                                                 // other sprites
 123         rendering::ViewState viewState;
 124         canvas::tools::initViewState( viewState );
 125         rendering::RenderState renderState;
 126         canvas::tools::initRenderState( renderState );
 127         sprite->getContentCanvas()->getUNOCanvas()->drawBitmap(
 128             mxBitmap, viewState, renderState );
 129
 130         sprite->setAlpha( 0.9 );
 131         sprite->movePixel( calcSpritePos( rView ) );
 132         if( mbVisible )
 133             sprite->show();
 134     }
 135     catch( uno::Exception& )
 136     {
 137         OSL_FAIL( OUStringToOString(
 138                         comphelper::anyToString( cppu::getCaughtException() ),
 139                         RTL_TEXTENCODING_UTF8 ).getStr() );
 140     }
 141
 142     maViews.push_back( ViewsVecT::value_type( rView, sprite ) );
 143 }
 144
 145 void PointerSymbol::viewRemoved( const UnoViewSharedPtr& rView )
 146 {
 147     maViews.erase(
 148         std::remove_if(
 149             maViews.begin(), maViews.end(),
 150             boost::bind(
 151                 std::equal_to<UnoViewSharedPtr>(),
 152                 rView,
 153                 // select view:
 154                 boost::bind( o3tl::select1st<ViewsVecT::value_type>(), _1 ) ) ),
 155         maViews.end() );
 156 }
 157
 158 void PointerSymbol::viewChanged( const UnoViewSharedPtr& rView )
 159 {
 160     // find entry corresponding to modified view
 161     ViewsVecT::iterator aModifiedEntry(
 162         std::find_if(
 163             maViews.begin(),
 164             maViews.end(),
 165             boost::bind(
 166                 std::equal_to<UnoViewSharedPtr>(),
 167                 rView,
 168                 // select view:
 169                 boost::bind( o3tl::select1st<ViewsVecT::value_type>(), _1 ))));
 170
 171     OSL_ASSERT( aModifiedEntry != maViews.end() );
 172     if( aModifiedEntry == maViews.end() )
 173         return;
 174
 175     if( aModifiedEntry->second )
 176         aModifiedEntry->second->movePixel(
 177             calcSpritePos(aModifiedEntry->first) );
 178 }
 179
 180 void PointerSymbol::viewsChanged()
 181 {
 182     // reposition sprites on all views
 183     ViewsVecT::const_iterator       aIter( maViews.begin() );
 184     ViewsVecT::const_iterator const aEnd ( maViews.end() );
 185     while( aIter != aEnd )
 186     {
 187         if( aIter->second )
 188             aIter->second->movePixel(
 189                 calcSpritePos( aIter->first ));
 190         ++aIter;
 191     }
 192 }
 193
 194 void PointerSymbol::viewsChanged(const geometry::RealPoint2D pos)
 195 {
 196     if( pos.X != maPos.X || pos.Y != maPos.Y )
 197     {
 198         maPos = pos;
 199
 200         // reposition sprites on all views
 201         ViewsVecT::const_iterator       aIter( maViews.begin() );
 202         ViewsVecT::const_iterator const aEnd ( maViews.end() );
 203         while( aIter != aEnd )
 204         {
 205             if( aIter->second )
 206             {
 207                 aIter->second->movePixel(
 208                 calcSpritePos( aIter->first ));
 209                 mrScreenUpdater.notifyUpdate();
 210                 mrScreenUpdater.commitUpdates();
 211             }
 212             ++aIter;
 213         }
 214     }
 215 }
 216
 217 } // namespace internal
 218 } // namespace slideshow
 219
 220 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */