modules/gui/skins2/src/anim_bitmap.cpp

   1 /*****************************************************************************
   2  * anim_bitmap.cpp
   3  *****************************************************************************
   4  * Copyright (C) 2005 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Cyril Deguet     <asmax@via.ecp.fr>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 #include "anim_bitmap.hpp"
  25 #include "generic_bitmap.hpp"
  26 #include "os_factory.hpp"
  27 #include "os_graphics.hpp"
  28 #include "os_timer.hpp"
  29
  30
  31 AnimBitmap::AnimBitmap( intf_thread_t *pIntf, const GenericBitmap &rBitmap ):
  32     SkinObject( pIntf ), m_pImage( NULL ), m_curFrame( 0 ), m_curLoop( 0 ),
  33     m_pTimer( NULL ), m_cmdNextFrame( this ), m_rBitmap( rBitmap )
  34 {
  35     // Build the graphics
  36     OSFactory *pOsFactory = OSFactory::instance( pIntf );
  37     m_pImage = pOsFactory->createOSGraphics( rBitmap.getWidth(),
  38                                              rBitmap.getHeight() );
  39     m_pImage->drawBitmap( rBitmap, 0, 0 );
  40
  41     m_nbFrames = rBitmap.getNbFrames();
  42     m_frameRate = rBitmap.getFrameRate();
  43     m_nbLoops = rBitmap.getNbLoops();
  44
  45     // Create the timer
  46     m_pTimer = pOsFactory->createOSTimer( m_cmdNextFrame );
  47 }
  48
  49
  50 AnimBitmap::~AnimBitmap()
  51 {
  52     delete m_pImage;
  53     delete m_pTimer;
  54 }
  55
  56
  57 void AnimBitmap::startAnim()
  58 {
  59     if( m_nbFrames > 1 && m_frameRate > 0 )
  60         m_pTimer->start( 1000 / m_frameRate, false );
  61 }
  62
  63
  64 void AnimBitmap::stopAnim()
  65 {
  66     m_pTimer->stop();
  67     m_curLoop = 0;
  68     m_curFrame = 0;
  69 }
  70
  71
  72 void AnimBitmap::draw( OSGraphics &rImage, int xDest, int yDest )
  73 {
  74     // Draw the current frame
  75     int height = m_pImage->getHeight() / m_nbFrames;
  76     int ySrc = height * m_curFrame;
  77
  78     // The old way .... transparency was not taken care of
  79     // rImage.drawGraphics( *m_pImage, 0, ySrc, xDest, yDest,
  80     //                      m_pImage->getWidth(), height );
  81
  82     // A new way .... needs to be tested thoroughly
  83     rImage.drawBitmap( m_rBitmap, 0, ySrc, xDest, yDest,
  84                        m_pImage->getWidth(), height, true );
  85 }
  86
  87
  88 bool AnimBitmap::hit( int x, int y ) const
  89 {
  90     int height = m_pImage->getHeight() / m_nbFrames;
  91     return y >= 0 && y < height &&
  92            m_pImage->hit( x, m_curFrame * height + y );
  93 }
  94
  95
  96 int AnimBitmap::getWidth() const
  97 {
  98     return m_pImage->getWidth();
  99 }
 100
 101
 102 int AnimBitmap::getHeight() const
 103 {
 104     return m_pImage->getHeight() / m_nbFrames;
 105 }
 106
 107
 108 void AnimBitmap::CmdNextFrame::execute()
 109 {
 110     // Go the next frame
 111     m_pParent->m_curFrame = ( m_pParent->m_curFrame + 1 ) %
 112         m_pParent->m_nbFrames;
 113
 114     if( m_pParent->m_nbLoops > 0 && m_pParent->m_curFrame == 0 )
 115     {
 116         m_pParent->m_curLoop += 1;
 117
 118         if( m_pParent->m_curLoop == m_pParent->m_nbLoops )
 119         {
 120             m_pParent->stopAnim();
 121             m_pParent->m_curFrame = m_pParent->m_nbFrames - 1;
 122         }
 123     }
 124
 125     // Notify the observer so that it can display the next frame
 126     m_pParent->notify();
 127 }
 128