Qt: QDial: show value on control (fix #8906)

modules/gui/qt4/components/extended_panels.cpp

@@ -47,6 +47,7 @@
 #include "qt4.hpp"
 #include "input_manager.hpp"
 #include "util/qt_dirs.hpp"
+#include "util/customwidgets.hpp"
 
 #include "../../audio_filter/equalizer_presets.h"
 #include <vlc_intf_strings.h>
@@ -529,7 +530,7 @@ void ExtVideo::setWidgetValue( QObject *widget )
     QCheckBox      *checkbox      = qobject_cast<QCheckBox*>     ( widget );
     QSpinBox       *spinbox       = qobject_cast<QSpinBox*>      ( widget );
     QDoubleSpinBox *doublespinbox = qobject_cast<QDoubleSpinBox*>( widget );
-    QDial          *dial          = qobject_cast<QDial*>         ( widget );
+    VLCQDial       *dial          = qobject_cast<VLCQDial*>      ( widget );
     QLineEdit      *lineedit      = qobject_cast<QLineEdit*>     ( widget );
     QComboBox      *combobox      = qobject_cast<QComboBox*>     ( widget );
 
@@ -605,7 +606,7 @@ void ExtVideo::updateFilterOptions()
     QCheckBox      *checkbox      = qobject_cast<QCheckBox*>     ( sender() );
     QSpinBox       *spinbox       = qobject_cast<QSpinBox*>      ( sender() );
     QDoubleSpinBox *doublespinbox = qobject_cast<QDoubleSpinBox*>( sender() );
-    QDial          *dial          = qobject_cast<QDial*>         ( sender() );
+    VLCQDial       *dial          = qobject_cast<VLCQDial*>      ( sender() );
     QLineEdit      *lineedit      = qobject_cast<QLineEdit*>     ( sender() );
     QComboBox      *combobox      = qobject_cast<QComboBox*>     ( sender() );
 

modules/gui/qt4/ui/video_effects.ui

@@ -843,7 +843,7 @@
         </widget>
        </item>
        <item row="1" column="1">
-        <widget class="QDial" name="rotateAngleDial">
+        <widget class="VLCQDial" name="rotateAngleDial">
          <property name="sizePolicy">
           <sizepolicy hsizetype="Preferred" vsizetype="MinimumExpanding">
            <horstretch>0</horstretch>
@@ -1795,6 +1795,13 @@
    </layout>
   </widget>
  </widget>
+ <customwidgets>
+  <customwidget>
+   <class>VLCQDial</class>
+   <extends>QDial</extends>
+   <header>util/customwidgets.hpp</header>
+  </customwidget>
+ </customwidgets>
  <tabstops>
   <tabstop>adjustEnable</tabstop>
   <tabstop>hueSlider</tabstop>

modules/gui/qt4/util/customwidgets.cpp

@@ -87,6 +87,22 @@ QString QVLCDebugLevelSpinBox::textFromValue( int v ) const
     return QString( "%1 (%2)" ).arg( v ).arg( texts[v] );
 }
 
+VLCQDial::VLCQDial( QWidget *parent ) : QDial( parent )
+{
+
+}
+
+void VLCQDial::paintEvent( QPaintEvent *event )
+{
+    QDial::paintEvent( event );
+    QPainter painter( this );
+    QRect rect = geometry();
+    painter.setPen( QPen( palette().color( QPalette::WindowText ) ) );
+    painter.drawText( QRectF( 0, rect.height() * 0.66, rect.width(), rect.height() ),
+                      Qt::AlignHCenter, QString::number( value() ), 0 );
+    painter.end();
+}
+
 /***************************************************************************
  * Hotkeys converters
  ***************************************************************************/

modules/gui/qt4/util/customwidgets.hpp

@@ -37,6 +37,7 @@
 #include <QTimer>
 #include <QToolButton>
 #include <QAbstractAnimation>
+#include <QDial>
 
 class QPixmap;
 class QWidget;
@@ -51,6 +52,15 @@ protected:
     virtual void paintEvent( QPaintEvent * event );
 };
 
+class VLCQDial : public QDial
+{
+    Q_OBJECT
+public:
+    VLCQDial( QWidget *parent = NULL );
+protected:
+    virtual void paintEvent( QPaintEvent * event );
+};
+
 class QToolButtonExt : public QToolButton
 {
     Q_OBJECT