kget/ui/tray.cpp

   1 /* This file is part of the KDE project
   2
   3    Copyright (C) 2002 by Patrick Charbonnier <pch@freeshell.org>
   4    Based On Caitoo v.0.7.3 (c) 1998 - 2000, Matej Koss
   5
   6    This program is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU General Public
   8    License as published by the Free Software Foundation; either
   9    version 2 of the License, or (at your option) any later version.
  10 */
  11
  12 #include "ui/tray.h"
  13
  14 #include "core/kget.h"
  15 #include "mainwindow.h"
  16
  17 #include <kaboutdata.h>
  18 #include <kactioncollection.h>
  19 #include <kapplication.h>
  20 #include <kiconloader.h>
  21 #include <kiconeffect.h>
  22 #include <kmenu.h>
  23 #include <kdebug.h>
  24
  25 #include <QTimer>
  26 #include <QClipboard>
  27 #include <QPainter>
  28 #include <QLabel>
  29
  30 /** class Tray
  31   * Reimplmentation of the system tray class adding drag/drop
  32   * capabilities and the quit action.
  33   */
  34 Tray::Tray(MainWindow * parent)
  35     : KSystemTrayIcon(parent),
  36       blinkTimer( 0 ),
  37       grayedIcon( 0 ),
  38       alternateIcon( 0 ),
  39       overlay( 0 ),
  40       overlayVisible( false )
  41 {
  42     baseIcon = new QPixmap( KSystemTrayIcon::loadIcon("kget").pixmap(22) );
  43     playOverlay = new QPixmap( SmallIcon( "media-playback-start" ) );
  44     stopOverlay = new QPixmap( SmallIcon( "media-playback-pause" ) );
  45
  46     paintIcon();
  47
  48     // add preferences action to the context menu
  49     QMenu * cm = contextMenu();
  50     cm->addAction( parent->actionCollection()->action("new_download") );
  51     cm->addSeparator();
  52     cm->addAction( parent->actionCollection()->action("start_all_download") );
  53     cm->addAction( parent->actionCollection()->action("stop_all_download") );
  54     cm->addSeparator();
  55     cm->addAction( parent->actionCollection()->action("preferences") );
  56     cm->addAction( parent->actionCollection()->action("konqueror_integration") );
  57     cm->addAction( parent->actionCollection()->action("show_drop_target") );
  58
  59     // add tooltip telling "I'm kget"
  60     setToolTip( KGlobal::mainComponent().aboutData()->shortDescription() );
  61
  62     // connecting the "Exit" menu item to the quit() of our app
  63     connect( this, SIGNAL( quitSelected() ), kapp, SLOT(quit()));
  64     connect( this, SIGNAL( activated( QSystemTrayIcon::ActivationReason ) ),
  65                    SLOT( slotActivated( QSystemTrayIcon::ActivationReason ) ) );
  66 }
  67
  68 // dtor: delete internal classes
  69 Tray::~Tray()
  70 {
  71     delete blinkTimer;
  72     delete baseIcon;
  73     delete grayedIcon;
  74     delete alternateIcon;
  75     delete playOverlay;
  76     delete stopOverlay;
  77 //    delete overlay;   // deleting overlay is wrong - it's either playOverlay or stopOverlay
  78 }
  79
  80 // filter middle mouse clicks to ask scheduler to paste URL
  81 void Tray::slotActivated( QSystemTrayIcon::ActivationReason reason )
  82 {
  83     if ( reason == QSystemTrayIcon::MiddleClick )
  84     {
  85         //Here we paste the transfer
  86         QString newtransfer = QApplication::clipboard()->text();
  87         newtransfer = newtransfer.trimmed();
  88
  89         if(!newtransfer.isEmpty())
  90             KGet::addTransfer(KUrl(newtransfer), QString(), QString(), true);
  91     }
  92 }
  93
  94 // display blinking icon when downloading
  95 void Tray::setDownloading( bool running )
  96 {
  97     kDebug(5001) << "Tray::setDownloading";
  98
  99     if(!blinkTimer)
 100     {
 101         blinkTimer = new QTimer;
 102         connect( blinkTimer, SIGNAL( timeout() ), this, SLOT( slotTimeout() ) );
 103     }
 104
 105     overlayVisible = true;
 106
 107     if(running)
 108     {
 109         overlay = playOverlay;
 110         blinkTimer->start( 1500 );  // start 'blink' timer
 111         paintIcon( 50, true );
 112     }
 113     else
 114     {
 115         overlay = stopOverlay;
 116         blinkTimer->start( 1500 );  // start 'hide' timer
 117         paintIcon( 50, true );
 118     }
 119 }
 120
 121 // slot executed every 1s: toggle icon pixmap
 122 void Tray::slotTimeout()
 123 {
 124     if ( overlay == playOverlay )
 125     {
 126         overlayVisible = !overlayVisible;
 127         paintIcon( 50/*mergeLevel*/, true );
 128     }
 129     else if( overlay == stopOverlay )
 130     {
 131         overlay = 0;
 132         blinkTimer->stop();
 133         paintIcon( -1, true );
 134         overlayVisible = false;
 135     }
 136 }
 137
 138 void Tray::paintIcon( int mergePixels, bool force )
 139 {
 140     // skip redrawing the same pixmap
 141     static int mergePixelsCache = 0;
 142     if ( mergePixels == mergePixelsCache && !force )
 143          return;
 144     mergePixelsCache = mergePixels;
 145
 146     if ( mergePixels < 0 )
 147         return blendOverlay( baseIcon );
 148
 149     // make up the grayed icon
 150     if ( !grayedIcon )
 151     {
 152         QImage tmpTrayIcon = baseIcon->toImage();
 153         KIconEffect::semiTransparent( tmpTrayIcon );
 154         grayedIcon = new QPixmap( QPixmap::fromImage( tmpTrayIcon ) );
 155     }
 156     if ( mergePixels == 0 )
 157         return blendOverlay( grayedIcon );
 158
 159     // make up the alternate icon (use hilight color but more saturated)
 160     if ( !alternateIcon )
 161     {
 162         QImage tmpTrayIcon = baseIcon->toImage();
 163         // eros: this looks cool with dark red blue or green but sucks with
 164         // other colors (such as kde default's pale pink..). maybe the effect
 165         // or the blended color has to be changed..
 166         QLabel label; //just a hack to get the palette
 167         QColor saturatedColor = label.palette().color(QPalette::Active, QPalette::Highlight);
 168         int hue, sat, value;
 169         saturatedColor.getHsv( &hue, &sat, &value );
 170         saturatedColor.setHsv( hue, (sat + 510) / 3, value );
 171         KIconEffect::colorize( tmpTrayIcon, saturatedColor/* Qt::blue */, 0.9 );
 172         alternateIcon = new QPixmap( QPixmap::fromImage( tmpTrayIcon ) );
 173     }
 174     if ( mergePixels >= alternateIcon->height() )
 175         return blendOverlay( alternateIcon );
 176
 177     // mix [ grayed <-> colored ] icons
 178     QPixmap tmpTrayPixmap( *alternateIcon );
 179     QPainter paint;
 180     paint.begin( &tmpTrayPixmap );
 181     paint.drawPixmap( 0, 0, *grayedIcon, 0, 0,
 182         alternateIcon->width(), alternateIcon->height() - mergePixels );
 183     paint.end();
 184
 185     blendOverlay( &tmpTrayPixmap );
 186 }
 187
 188 void Tray::blendOverlay( QPixmap * sourcePixmap )
 189 {
 190     if ( !overlayVisible || !overlay || overlay->isNull() )
 191         return setIcon( *sourcePixmap );
 192
 193     // here comes the tricky part.. no kdefx functions are helping here.. :-(
 194     // we have to blend pixmaps with different sizes (blending will be done in
 195     // the bottom-left corner of source pixmap with a smaller overlay pixmap)
 196     int opW = overlay->width(),
 197         opH = overlay->height(),
 198         opX = 1,
 199         opY = sourcePixmap->height() - opH;
 200
 201     // get the rectangle where blending will take place
 202     QPixmap sourceCropped( opW, opH );
 203     sourceCropped.fill(Qt::transparent);
 204     QPainter paint;
 205     paint.begin( &sourceCropped );
 206     paint.drawPixmap( 0, 0, *sourcePixmap, opX, opY, opW,opH );
 207     paint.end();
 208
 209     // blend the overlay image over the cropped rectangle
 210     QImage blendedImage = sourceCropped.toImage();
 211     QImage overlayImage = overlay->toImage();
 212     KIconEffect::overlay( blendedImage, overlayImage );
 213     sourceCropped = QPixmap().fromImage( blendedImage );
 214
 215     // put back the blended rectangle to the original image
 216     QPixmap sourcePixmapCopy = *sourcePixmap;
 217     paint.begin( &sourcePixmapCopy );
 218     paint.drawPixmap( opX, opY, sourceCropped, 0, 0, opW,opH );
 219     paint.end();
 220
 221     setIcon( sourcePixmapCopy );
 222 }
 223
 224 #include "tray.moc"