git.sesse.net Git - vlc/blob - modules/gui/skins2/controls/ctrl_image.cpp

   1 /*****************************************************************************
   2  * ctrl_image.cpp
   3  *****************************************************************************
   4  * Copyright (C) 2003 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Cyril Deguet     <asmax@via.ecp.fr>
   8  *          Olivier Teulière <ipkiss@via.ecp.fr>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 #include "ctrl_image.hpp"
  26 #include "../commands/cmd_dialogs.hpp"
  27 #include "../events/evt_generic.hpp"
  28 #include "../src/os_factory.hpp"
  29 #include "../src/os_graphics.hpp"
  30 #include "../src/vlcproc.hpp"
  31 #include "../src/scaled_bitmap.hpp"
  32 #include "../src/art_manager.hpp"
  33 #include "../utils/position.hpp"
  34
  35
  36 CtrlImage::CtrlImage( intf_thread_t *pIntf, GenericBitmap &rBitmap,
  37                       CmdGeneric &rCommand, resize_t resizeMethod,
  38                       const UString &rHelp, VarBool *pVisible, bool art ):
  39     CtrlFlat( pIntf, rHelp, pVisible ),
  40     m_pBitmap( &rBitmap ), m_pOriginalBitmap( &rBitmap ),
  41     m_rCommand( rCommand ), m_resizeMethod( resizeMethod ), m_art( art ),
  42     m_x( 0 ), m_y( 0 )
  43 {
  44     // Create an initial unscaled image in the buffer
  45     m_pImage = OSFactory::instance( pIntf )->createOSGraphics(
  46                                     rBitmap.getWidth(), rBitmap.getHeight() );
  47     m_pImage->drawBitmap( *m_pBitmap );
  48
  49     // Observe the variable
  50     if( m_art )
  51     {
  52         VlcProc *pVlcProc = VlcProc::instance( getIntf() );
  53         pVlcProc->getStreamArtVar().addObserver( this );
  54     }
  55
  56 }
  57
  58
  59 CtrlImage::~CtrlImage()
  60 {
  61     delete m_pImage;
  62
  63     if( m_art )
  64     {
  65         VlcProc *pVlcProc = VlcProc::instance( getIntf() );
  66         pVlcProc->getStreamArtVar().delObserver( this );
  67     }
  68 }
  69
  70
  71 void CtrlImage::handleEvent( EvtGeneric &rEvent )
  72 {
  73     // No FSM for this simple transition
  74     if( rEvent.getAsString() == "mouse:right:up:none" )
  75     {
  76         CmdDlgShowPopupMenu( getIntf() ).execute();
  77     }
  78     else if( rEvent.getAsString() == "mouse:left:up:none" )
  79     {
  80         CmdDlgHidePopupMenu( getIntf() ).execute();
  81         CmdDlgHideVideoPopupMenu( getIntf() ).execute();
  82         CmdDlgHideAudioPopupMenu( getIntf() ).execute();
  83         CmdDlgHideMiscPopupMenu( getIntf() ).execute();
  84     }
  85     else if( rEvent.getAsString() == "mouse:left:dblclick:none" )
  86     {
  87         m_rCommand.execute();
  88     }
  89 }
  90
  91
  92 bool CtrlImage::mouseOver( int x, int y ) const
  93 {
  94     if( x >= 0 && x < getPosition()->getWidth() &&
  95         y >= 0 && y < getPosition()->getHeight() )
  96     {
  97         // convert the coordinates to make them fit to the
  98         // size of the original image if needed
  99         switch( m_resizeMethod )
 100         {
 101         case kMosaic:
 102             x %= m_pImage->getWidth();
 103             y %= m_pImage->getHeight();
 104             break;
 105
 106         case kScaleAndRatioPreserved:
 107             x -= m_x;
 108             y -= m_y;
 109             break;
 110
 111         case kScale:
 112             break;
 113         }
 114         return m_pImage->hit( x, y );
 115     }
 116
 117     return false;
 118 }
 119
 120
 121 void CtrlImage::draw( OSGraphics &rImage, int xDest, int yDest, int w, int h )
 122 {
 123     const Position *pPos = getPosition();
 124     if( !pPos )
 125         return;
 126
 127     int width = pPos->getWidth();
 128     int height = pPos->getHeight();
 129     if( width <= 0 || height <= 0 )
 130         return;
 131
 132     rect region( pPos->getLeft(), pPos->getTop(),
 133                  pPos->getWidth(), pPos->getHeight() );
 134     rect clip( xDest, yDest, w, h );
 135     rect inter;
 136     if( !rect::intersect( region, clip, &inter ) )
 137         return;
 138
 139     if( m_resizeMethod == kScale )
 140     {
 141         // Use scaling method
 142         if( width != m_pImage->getWidth() ||
 143             height != m_pImage->getHeight() )
 144         {
 145             OSFactory *pOsFactory = OSFactory::instance( getIntf() );
 146             // Rescale the image with the actual size of the control
 147             ScaledBitmap bmp( getIntf(), *m_pBitmap, width, height );
 148             delete m_pImage;
 149             m_pImage = pOsFactory->createOSGraphics( width, height );
 150             m_pImage->drawBitmap( bmp, 0, 0 );
 151         }
 152         rImage.drawGraphics( *m_pImage,
 153                              inter.x - pPos->getLeft(),
 154                              inter.y - pPos->getTop(),
 155                              inter.x, inter.y,
 156                              inter.width, inter.height );
 157     }
 158     else if( m_resizeMethod == kMosaic )
 159     {
 160         int xDest0 = pPos->getLeft();
 161         int yDest0 = pPos->getTop();
 162
 163         // Use mosaic method
 164         while( width > 0 )
 165         {
 166             int curWidth = __MIN( width, m_pImage->getWidth() );
 167             height = pPos->getHeight();
 168             int curYDest = yDest0;
 169             while( height > 0 )
 170             {
 171                 int curHeight = __MIN( height, m_pImage->getHeight() );
 172                 rect region1( xDest0, curYDest, curWidth, curHeight );
 173                 rect inter1;
 174                 if( rect::intersect( region1, clip, &inter1 ) )
 175                 {
 176                     rImage.drawGraphics( *m_pImage,
 177                                    inter1.x - region1.x,
 178                                    inter1.y - region1.y,
 179                                    inter1.x, inter1.y,
 180                                    inter1.width, inter1.height );
 181                 }
 182                 curYDest += curHeight;
 183                 height -= m_pImage->getHeight();
 184             }
 185             xDest0 += curWidth;
 186             width -= m_pImage->getWidth();
 187         }
 188     }
 189     else if( m_resizeMethod == kScaleAndRatioPreserved )
 190     {
 191         int w0 = m_pBitmap->getWidth();
 192         int h0 = m_pBitmap->getHeight();
 193
 194         int scaled_height = width * h0 / w0;
 195         int scaled_width  = height * w0 / h0;
 196
 197         // new image scaled with aspect ratio preserved
 198         // and centered inside the control boundaries
 199         int w, h;
 200         if( scaled_height > height )
 201         {
 202             w = scaled_width;
 203             h = height;
 204             m_x = ( width - w ) / 2;
 205             m_y = 0;
 206         }
 207         else
 208         {
 209             w = width;
 210             h = scaled_height;
 211             m_x = 0;
 212             m_y = ( height - h ) / 2;
 213         }
 214
 215         // rescale the image if size changed
 216         if( w != m_pImage->getWidth() ||
 217             h != m_pImage->getHeight() )
 218         {
 219             OSFactory *pOsFactory = OSFactory::instance( getIntf() );
 220             ScaledBitmap bmp( getIntf(), *m_pBitmap, w, h );
 221             delete m_pImage;
 222             m_pImage = pOsFactory->createOSGraphics( w, h );
 223             m_pImage->drawBitmap( bmp, 0, 0 );
 224         }
 225
 226         // draw the scaled image at offset (m_x, m_y) from control origin
 227         rect region1( pPos->getLeft() + m_x, pPos->getTop() + m_y, w, h );
 228         rect inter1;
 229         if( rect::intersect( region1, inter, &inter1 ) )
 230         {
 231             rImage.drawGraphics( *m_pImage,
 232                                  inter1.x - pPos->getLeft() - m_x,
 233                                  inter1.y - pPos->getTop() - m_y,
 234                                  inter1.x, inter1.y,
 235                                  inter1.width, inter1.height );
 236         }
 237     }
 238 }
 239
 240
 241 void CtrlImage::onUpdate( Subject<VarString> &rVariable, void* arg )
 242 {
 243     VlcProc *pVlcProc = VlcProc::instance( getIntf() );
 244
 245     if( &rVariable == &pVlcProc->getStreamArtVar() )
 246     {
 247         string str = ((VarString&)rVariable).get();
 248         ArtManager* pArtManager = ArtManager::instance( getIntf() );
 249         GenericBitmap* pArt = (GenericBitmap*) pArtManager->getArtBitmap( str );
 250
 251         m_pBitmap = pArt ? pArt : m_pOriginalBitmap;
 252
 253         msg_Dbg( getIntf(), "art file %s to be displayed (wxh = %ix%i)",
 254                             str.c_str(),
 255                             m_pBitmap->getWidth(),
 256                             m_pBitmap->getHeight() );
 257
 258         delete m_pImage;
 259         m_pImage = OSFactory::instance( getIntf() )->createOSGraphics(
 260                                         m_pBitmap->getWidth(),
 261                                         m_pBitmap->getHeight() );
 262         m_pImage->drawBitmap( *m_pBitmap );
 263
 264         notifyLayout();
 265     }
 266 }
 267
 268