Qt4 - New kind of volume slider.

Need a lot of graphic tweaking.

modules/gui/qt4/components/interface_widgets.cpp

@@ -29,6 +29,7 @@
 #include "input_manager.hpp"
 #include "menus.hpp"
 #include "util/input_slider.hpp"
+#include "util/customwidgets.hpp"
 #include <vlc_vout.h>
 
 #include <QLabel>
@@ -486,29 +487,20 @@ ControlsWidget::ControlsWidget( intf_thread_t *_p_i, bool b_advControls ) :
     controlLayout->setColumnStretch( 14, 5 );
 
     /* Volume */
-    VolumeClickHandler *h = new VolumeClickHandler( p_intf, this );
+    VolumeClickHandler *hVolLabel = new VolumeClickHandler( p_intf, this );
 
     volMuteLabel = new QLabel;
     volMuteLabel->setPixmap( QPixmap( ":/pixmaps/volume-high.png" ) );
     volMuteLabel->setToolTip( qtr( "Mute" ) );
-    volMuteLabel->installEventFilter( h );
-
-    /** TODO:
-     * Change this slider to use a nice Amarok-like one
-     * **/
-    /** FIXME
-     *  THis percerntage thing has to be handled correctly
-     *  This has to match to the OSD
-     **/
-    volumeSlider = new QSlider;
-    volumeSlider->setSizePolicy( sizePolicy );
-    volumeSlider->setMaximumSize( QSize( 80, 200 ) );
-    volumeSlider->setOrientation( Qt::Horizontal );
+    volMuteLabel->installEventFilter( hVolLabel );
+    controlLayout->addWidget( volMuteLabel, 3, 15 );
 
+    volumeSlider = new SoundSlider( this );
+    volumeSlider->setMaximumSize( QSize( 200, 40 ) );
+    volumeSlider->setMinimumSize( QSize( 80, 20 ) );
+    controlLayout->addWidget( volumeSlider, 3, 16, 1, 2 );
     volumeSlider->setMaximum( VOLUME_MAX );
     volumeSlider->setFocusPolicy( Qt::NoFocus );
-    controlLayout->addWidget( volMuteLabel, 3, 15 );
-    controlLayout->addWidget( volumeSlider, 3, 16, 1, 2 );
 
     /* Volume control connection */
     CONNECT( volumeSlider, valueChanged( int ), this, updateVolume( int ) );
@@ -863,3 +855,5 @@ void SpeedControlWidget::resetRate()
 {
     THEMIM->getIM()->setRate(INPUT_RATE_DEFAULT);
 }
+
+

modules/gui/qt4/components/interface_widgets.hpp

@@ -140,6 +140,8 @@ class InputSlider;
 class QSlider;
 class QGridLayout;
 class VolumeClickHandler;
+class SoundSlider;
+
 class ControlsWidget : public QFrame
 {
     Q_OBJECT
@@ -148,7 +150,7 @@ public:
     virtual ~ControlsWidget();
 
     QPushButton *playlistButton;
-    QSlider *volumeSlider;
+    SoundSlider *volumeSlider;
     void setStatus( int );
     void enableInput( bool );
     void enableVideo( bool );
@@ -226,6 +228,7 @@ signals:
     void timeLabelDoubleClicked();
 };
 
+
 /******************** Playlist Widgets ****************/
 #include <QModelIndex>
 #include <QSplitter>
@@ -273,5 +276,4 @@ private slots:
     void resetRate();
 };
 
-
 #endif

modules/gui/qt4/util/customwidgets.cpp

@@ -195,3 +195,4 @@ QString VLCKeyToString( int val )
     }
     return r;
 }
+

modules/gui/qt4/util/customwidgets.hpp

@@ -56,6 +56,7 @@ private:
     bool mDrawClickMsg;
 };
 
+
 /*****************************************************************
  * Custom views
  *****************************************************************/

modules/gui/qt4/util/input_slider.cpp

@@ -24,6 +24,10 @@
 #include "qt4.hpp"
 #include "util/input_slider.hpp"
 
+#include <QPaintEvent>
+#include <QPainter>
+
+#include <QStyle>
 InputSlider::InputSlider( QWidget *_parent ) : DirectSlider( _parent )
 {
     InputSlider::InputSlider( Qt::Horizontal, _parent );
@@ -66,7 +70,123 @@ void InputSlider::userDrag( int new_value )
 void InputSlider::mouseMoveEvent(QMouseEvent *event)
 {
     char psz_length[MSTRTIME_MAX_SIZE];
-    secstotimestr( psz_length,  (int)((float)event->x()/size().width()*inputLength) );
+    secstotimestr( psz_length, ( event->x() * inputLength) / size().width() );
     setToolTip( psz_length );
 }
 
+#define WLENGTH   100 // px
+#define WHEIGHT   25  // px
+#define SOUNDMIN  0   // %
+#define SOUNDMAX  200 // % OR 400 ?
+#define SOUNDSTEP 5   // %
+
+SoundSlider::SoundSlider( QWidget *_parent ) : QAbstractSlider( _parent )
+{
+    padding = 5;
+    setRange( SOUNDMIN, SOUNDMAX );
+
+    pixGradient = QPixmap( QSize( WLENGTH, WHEIGHT ) );
+//    QBixmap mask = QBitmap( QPixmap );
+
+    QPainter p( &pixGradient );
+    QLinearGradient gradient( 0, 0, WLENGTH, WHEIGHT );
+    gradient.setColorAt( 0.0, Qt::white );
+    gradient.setColorAt( 1.0, Qt::blue );
+    p.setPen( Qt::NoPen );
+    p.setBrush( gradient );
+
+//static const QPointF points[3] = { QPointF( 0.0, WHEIGHT ),
+  //        QPointF( WLENGTH, WHEIGHT ),  QPointF( WLENGTH, 0.0 ) };
+
+ //   p.drawConvexPolygon( points, 3 );
+
+    p.drawRect( pixGradient.rect() );
+    p.end();
+
+ //   pixGradient.setMask( mask );
+}
+
+void SoundSlider::wheelEvent( QWheelEvent *event )
+{
+    int newvalue = value() + event->delta() / ( 8 * 15 ) * SOUNDSTEP;
+    setValue( __MIN( __MAX( minimum(), newvalue ), maximum() ) );
+
+    emit sliderReleased();
+}
+
+void SoundSlider::mousePressEvent( QMouseEvent *event )
+{
+    if( event->button() != Qt::RightButton )
+    {
+        /* We enter the sliding mode */
+        b_sliding = true;
+        i_oldvalue = value();
+        emit sliderPressed();
+    }
+}
+
+void SoundSlider::mouseReleaseEvent( QMouseEvent *event )
+{
+    if( event->button() != Qt::RightButton )
+    {
+        if( !b_outside && value() != i_oldvalue )
+        {
+            emit sliderReleased();
+            setValue( value() );
+        }
+        b_sliding = false;
+        b_outside = false;
+    }
+}
+
+void SoundSlider::mouseMoveEvent( QMouseEvent *event )
+{
+    if( b_sliding )
+    {
+        QRect rect( padding - 15,     padding - 1,
+                    WLENGTH + 15 * 2, WHEIGHT + 2 );
+        if( !rect.contains( event->pos() ) )
+        { /* We are outside */
+            if ( !b_outside )
+                setValue( i_oldvalue );
+            b_outside = true;
+        }
+        else
+        { /* We are inside */
+            b_outside = false;
+            changeValue( event->x() - padding );
+            emit sliderMoved( value() );
+        }
+    }
+    else
+        event->ignore();
+}
+
+void SoundSlider::changeValue( int x )
+{
+    setValue( QStyle::sliderValueFromPosition(
+                minimum(), maximum(), x, width() - 2 * padding ) );
+}
+
+void SoundSlider::paintEvent(QPaintEvent *e)
+{
+    QPainter painter( this );
+    const int offset = int( double( ( width() - 2 * padding ) * value() ) / maximum() );
+    const QRectF boundsG( padding, 0, offset , pixGradient.height() );
+    painter.drawPixmap( boundsG, pixGradient, boundsG );
+
+    painter.end();
+/*    QPainter painter( this );
+    printf( "%i\n", value() );
+
+    QLinearGradient gradient( 0.0, 0.0, WLENGTH, WHEIGHT );
+    gradient.setColorAt( 0.0, Qt::white );
+    gradient.setColorAt( 1.0, Qt::blue );
+
+    painter.setPen( QPen( QBrush( Qt::black ), 0, Qt::SolidLine, Qt::RoundCap ) );
+    painter.setBrush( gradient );
+    painter.setRenderHint( QPainter::Antialiasing );
+
+    painter.end();*/
+}
+

modules/gui/qt4/util/input_slider.hpp

@@ -45,4 +45,31 @@ private slots:
 signals:
     void sliderDragged( float );
 };
+
+
+class QPaintEvent;
+#include <QAbstractSlider>
+
+class SoundSlider : public QAbstractSlider
+{
+    Q_OBJECT
+public:
+    SoundSlider( QWidget *_parent );
+    virtual ~SoundSlider() {};
+protected:
+    int padding;
+    virtual void paintEvent(QPaintEvent *);
+    virtual void wheelEvent( QWheelEvent *event );
+    virtual void mousePressEvent( QMouseEvent * );
+    virtual void mouseMoveEvent( QMouseEvent * );
+    virtual void mouseReleaseEvent( QMouseEvent * );
+private:
+    bool b_sliding;
+    bool b_outside;
+    int i_oldvalue;
+    void changeValue( int x );
+    QPixmap pixGradient;
+    QPixmap pixLimit;
+};
+
 #endif