Scale values for screen reader to be from 0 to 100 for sliders in awl.

awl/aslider.cpp

@@ -40,6 +40,7 @@ AbstractSlider::AbstractSlider(QWidget* parent)
       _invert     = false;
       _scaleWidth = 4;
       _log        = false;
+      _useActualValue = false;
       setFocusPolicy(Qt::StrongFocus);
       }
 
@@ -202,6 +203,21 @@ double AbstractSlider::value() const
       return _log ? pow(10.0, _value*0.05f) : _value;
       }
 
+//---------------------------------------------------------
+//   userValue (between 0 and 100)
+//---------------------------------------------------------
+
+QString AbstractSlider::userValue() const
+      {
+      double result;
+      if (_useActualValue)
+            result = value();
+      else
+            result = (_value - minValue())/ ((maxValue() - minValue())/100);
+
+      return QString::number(result, 'f', 2);
+      }
+
 //---------------------------------------------------------
 //   minLogValue
 //---------------------------------------------------------
@@ -278,7 +294,7 @@ QString AccessibleAbstractSlider::text(QAccessible::Text t) const
             case QAccessible::Name:
                   return slider->accessibleName();
             case QAccessible::Value:
-                  return QString::number(slider->value());
+                  return slider->userValue();
             case QAccessible::Description:
                   return slider->accessibleDescription();
             default:
@@ -287,9 +303,9 @@ QString AccessibleAbstractSlider::text(QAccessible::Text t) const
       return QString();
       }
 
-void AccessibleAbstractSlider::valueChanged(double value, int)
+void AccessibleAbstractSlider::valueChanged(double, int)
       {
-      QAccessibleValueChangeEvent ev(slider, value);
+      QAccessibleValueChangeEvent ev(slider, slider->userValue());
       QAccessible::updateAccessibility(&ev);
       }
 

awl/aslider.h

@@ -70,6 +70,7 @@ class AbstractSlider : public QWidget {
       QColor _scaleColor;
       QColor _scaleValueColor;
       bool _log;
+      bool _useActualValue; //! for user value
 
       virtual void wheelEvent(QWheelEvent*);
       virtual void keyPressEvent(QKeyEvent*);
@@ -109,6 +110,7 @@ class AbstractSlider : public QWidget {
       void setId(int i) { _id = i; }
 
       virtual double value() const;
+      virtual QString userValue() const;
 
       double minValue() const { return _minValue; }
       void setMinValue(double v) { _minValue = v; }
@@ -135,6 +137,7 @@ class AbstractSlider : public QWidget {
       void setDclickValue1(double val) { _dclickValue1 = val;  }
       void setDclickValue2(double val) { _dclickValue2 = val;  }
       void setEnabled(bool val);
+      void setUseActualValue(bool v)   { _useActualValue = v;  }
       };
 
 class AccessibleAbstractSlider : public QObject, QAccessibleWidget {

mscore/playpanel.cpp

@@ -63,6 +63,7 @@ PlayPanel::PlayPanel(QWidget* parent)
 
       tempoSlider->setDclickValue1(100.0);
       tempoSlider->setDclickValue2(100.0);
+      tempoSlider->setUseActualValue(true);
 
       connect(volumeSlider, SIGNAL(valueChanged(double,int)), SLOT(volumeChanged(double,int)));
       connect(posSlider,    SIGNAL(sliderMoved(int)),         SLOT(setPos(int)));