ENH: emit unique signals when color, opacity, font, style change.

The scalar bar widget listens for the unique signals from the text property
widget and passes them along as a modified signal.

Libs/Visualization/VTK/Widgets/ctkVTKScalarBarWidget.cpp

@@ -66,7 +66,17 @@ void ctkVTKScalarBarWidgetPrivate::init()
   
   QObject::connect(this->LabelsTextPropertyWidget, SIGNAL(textChanged(QString)),
                    q, SLOT(setLabelsFormat(QString)));
-  QObject::connect(this->LabelsTextPropertyWidget, SIGNAL(modified()),
+  QObject::connect(this->LabelsTextPropertyWidget, SIGNAL(colorChanged(QColor)),
+                   q, SIGNAL(modified()));
+  QObject::connect(this->LabelsTextPropertyWidget, SIGNAL(opacityChanged(double)),
+                   q, SIGNAL(modified()));
+  QObject::connect(this->LabelsTextPropertyWidget, SIGNAL(fontFamilyChanged(QString)),
+                   q, SIGNAL(modified()));
+  QObject::connect(this->LabelsTextPropertyWidget, SIGNAL(boldChanged(bool)),
+                   q, SIGNAL(modified()));
+  QObject::connect(this->LabelsTextPropertyWidget, SIGNAL(italicChanged(bool)),
+                   q, SIGNAL(modified()));
+  QObject::connect(this->LabelsTextPropertyWidget, SIGNAL(shadowChanged(bool)),
                    q, SIGNAL(modified()));
 }
 

Libs/Visualization/VTK/Widgets/ctkVTKTextPropertyWidget.cpp

@@ -199,7 +199,7 @@ void ctkVTKTextPropertyWidget::setColor(const QColor& color)
     }
   d->TextProperty->SetColor(color.redF(), color.greenF(), color.blueF());
 
-  emit modified();
+  emit colorChanged(color);
 }
 
 //-----------------------------------------------------------------------------
@@ -219,7 +219,7 @@ void ctkVTKTextPropertyWidget::setOpacity(double opacity)
     }
   d->TextProperty->SetOpacity(opacity);
 
-  emit modified();
+  emit opacityChanged(opacity);
 }
 
 //-----------------------------------------------------------------------------
@@ -239,7 +239,7 @@ void ctkVTKTextPropertyWidget::setFont(const QString& font)
     }
   d->TextProperty->SetFontFamilyAsString(font.toStdString().data());
   
-  emit modified();
+  emit fontFamilyChanged(font);
 }
 
 //-----------------------------------------------------------------------------
@@ -259,7 +259,7 @@ void ctkVTKTextPropertyWidget::setBold(bool enable)
     }
   d->TextProperty->SetBold(enable);
   
-  emit modified();
+  emit boldChanged(enable);
 }
 
 //-----------------------------------------------------------------------------
@@ -279,7 +279,7 @@ void ctkVTKTextPropertyWidget::setItalic(bool enable)
     }
   d->TextProperty->SetItalic(enable);
   
-  emit modified();
+  emit italicChanged(enable);
 }
 
 //-----------------------------------------------------------------------------
@@ -299,5 +299,5 @@ void ctkVTKTextPropertyWidget::setShadow(bool enable)
     }
   d->TextProperty->SetShadow(enable);
   
-  emit modified();
+  emit shadowChanged(enable);
 }

Libs/Visualization/VTK/Widgets/ctkVTKTextPropertyWidget.h

@@ -82,7 +82,12 @@ public Q_SLOTS:
 
 Q_SIGNALS:
   void textChanged(const QString& text);
-  void modified();
+  void colorChanged(const QColor& color);
+  void opacityChanged(double opacity);
+  void fontFamilyChanged(const QString &font);
+  void boldChanged(bool enable);
+  void italicChanged(bool enable);
+  void shadowChanged(bool enable);
 
 protected Q_SLOTS:
   void updateFromTextProperty();