Qt4 - New kind of volume slider.

[vlc] / modules / gui / qt4 / util / input_slider.cpp

diff --git a/modules/gui/qt4/util/input_slider.cpp b/modules/gui/qt4/util/input_slider.cpp
index c71770f62da1824c15d4409f8d5304bd5b3826f0..85e1d6ba27148f3956f52cb0c2f300f0a78204b1 100644 (file)
--- a/modules/gui/qt4/util/input_slider.cpp
+++ b/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();*/
+}
+