src/statusbar/selectLabel.h

   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Max Howell <max.howell@methylblue.com>          *
   3  *             (C) 2004 Frederik Holljen <fh@ez.no>                        *
   4  *             (C) 2005 Gábor Lehel <illissius@gmail.com>                  *
   5  *                                                                         *
   6  *   This program is free software; you can redistribute it and/or modify  *
   7  *   it under the terms of the GNU General Public License as published by  *
   8  *   the Free Software Foundation; either version 2 of the License, or     *
   9  *   (at your option) any later version.                                   *
  10  *                                                                         *
  11  *   This program is distributed in the hope that it will be useful,       *
  12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  14  *   GNU General Public License for more details.                          *
  15  *                                                                         *
  16  *   You should have received a copy of the GNU General Public License     *
  17  *   along with this program; if not, write to the                         *
  18  *   Free Software Foundation, Inc.,                                       *
  19  *   59 Temple Place - Suite 330, Boston, MA  02110-1301, USA.             *
  20  ***************************************************************************/
  21
  22 /** WARNING this is not meant for use outside this unit! */
  23
  24 #ifndef AMAROK_SELECTLABEL_H
  25 #define AMAROK_SELECTLABEL_H
  26
  27 #include "actionclasses.h"
  28 #include "amarok.h"
  29 #include "amarokconfig.h"
  30 #include "overlayWidget.h"
  31 #include "popupMessage.h"
  32
  33 #include <QIcon>
  34 #include <QLabel>
  35 #include <QTimer>
  36 #include <QToolTip>
  37 //Added by qt3to4:
  38 #include <QPixmap>
  39 #include <QEvent>
  40 #include <QMouseEvent>
  41 #include <QStyle>
  42
  43 #include <kactioncollection.h>
  44 #include <kglobalsettings.h>
  45 #include <kiconloader.h>
  46 #include <klocale.h>
  47 #include <kpassivepopup.h>
  48
  49
  50
  51 class SelectLabel : public QLabel
  52 {
  53     Q_OBJECT
  54
  55     Amarok::SelectAction const*const m_action;
  56
  57     signals:
  58         void activated( int );
  59
  60     public:
  61         SelectLabel( Amarok::SelectAction const*const action, QWidget *parent )
  62                 : QLabel( parent )
  63                 , m_action( action )
  64                 , m_tooltip( 0 )
  65                 , m_tooltipShowing( false )
  66                 , m_tooltipHidden( false )
  67         {
  68             connect( this,   SIGNAL( activated( int ) ), action, SLOT( setCurrentItem( int ) ) );
  69             connect( action, SIGNAL( activated( int ) ), this,   SLOT( setCurrentItem( int ) ) );
  70             connect( action, SIGNAL( enabled( bool )  ), this,   SLOT( setEnabled( bool )    ) );
  71
  72             setCurrentItem( currentItem() );
  73         }
  74
  75         inline int currentItem() const { return m_action->currentItem(); }
  76         inline bool isEnabled()  const { return m_action->isEnabled();   }
  77
  78     protected:
  79         void mousePressEvent( QMouseEvent* )
  80         {
  81             bool shown = m_tooltipShowing;
  82             hideToolTip();
  83             int n = currentItem();
  84             do //TODO doesn't handle all of them being disabled, but we don't do that anyways.
  85             {
  86                 n = ( int( n ) == m_action->items().count() - 1 ) ? 0 : n + 1;
  87             } while ( !m_action->menu()->isItemEnabled( n ) );
  88             if( isEnabled() )
  89             {
  90                 setCurrentItem( n );
  91                 emit activated( n );
  92                 if( shown )
  93                 {
  94                     m_tooltipHidden = false;
  95                     showToolTip();
  96                 }
  97             }
  98         }
  99
 100         void enterEvent( QEvent* )
 101         {
 102             //Show the tooltip after 1/2 second
 103             m_tooltipHidden = false;
 104             QTimer::singleShot( 500, this, SLOT(aboutToShow()) );
 105         }
 106
 107         void leaveEvent( QEvent* )
 108         {
 109             hideToolTip();
 110         }
 111
 112     public slots:
 113         void setCurrentItem( int )
 114         {
 115             if( isEnabled() && !m_action->currentIcon().isNull() )
 116                 setPixmap( SmallIcon( m_action->currentIcon() ) );
 117         }
 118
 119         void setEnabled( bool /*on*/ )
 120         {
 121             if( !m_action->currentIcon().isNull() )
 122                 setPixmap( KIcon( m_action->currentIcon() ).pixmap( style()->pixelMetric(QStyle::PM_SmallIconSize), QIcon::Disabled ) );
 123         }
 124
 125     private slots:
 126         void aboutToShow()
 127         {
 128             if( testAttribute(Qt::WA_UnderMouse) && !m_tooltipHidden )
 129                 showToolTip();
 130         }
 131
 132     private:
 133         void showToolTip()
 134         {
 135             if( m_tooltipShowing )
 136                 return;
 137
 138             m_tooltipShowing = true;
 139
 140             QString tip = i18n("%1: %2", m_action->text().remove( '&' ),  m_action->currentText().remove( '&' ) );
 141
 142             if( !isEnabled() )
 143                 tip += i18n("&nbsp;<br>&nbsp;<i>Disabled</i>");
 144             else if( AmarokConfig::favorTracks() &&
 145                      m_action == Amarok::actionCollection()->action( "random_mode" ) ) //hack?
 146             {
 147                 KSelectAction *a = static_cast<KSelectAction*>( Amarok::actionCollection()->action( "favor_tracks" ) );
 148                 tip += QString("<br><br>") + i18n("%1: %2", a->text().remove( '&' ), a->currentText().remove( '&' ) );
 149             }
 150
 151             const QPixmap pix = KIcon( m_action->currentIcon() )
 152                                 .pixmap( style()->pixelMetric(QStyle::PM_SmallIconSize), m_action->isEnabled()
 153                                                           ? QIcon::Normal
 154                                                           : QIcon::Disabled );
 155             m_tooltip = new KPassivePopup( parentWidget()->parentWidget() );
 156             KHBox *labBox = new KHBox( m_tooltip );
 157             QLabel *lab = new QLabel( labBox );
 158             lab->setPixmap( pix );
 159             QLabel *lab1 = new QLabel( labBox );
 160             lab1->setText( tip );
 161             m_tooltip->setView( labBox );
 162             m_tooltip->show( mapToGlobal( QPoint(parentWidget()->contentsRect().topLeft().x() - 70,
 163                              parentWidget()->contentsRect().topLeft().y() - 80 ) ) );
 164         }
 165
 166         void hideToolTip()
 167         {
 168             m_tooltipHidden = true;
 169             if( m_tooltipShowing )
 170             {
 171                 m_tooltip->hide();
 172                 m_tooltipShowing = false;
 173             }
 174         }
 175
 176         KPassivePopup      *m_tooltip;
 177         bool               m_tooltipShowing;
 178         bool               m_tooltipHidden;
 179
 180 };
 181
 182 #endif