started on editing multiple effects at once

effects/fields/boolfield.cpp

@@ -31,7 +31,13 @@ void BoolField::UpdateWidgetValue(QWidget *widget, double timecode)
 
   cb->blockSignals(true);
 
-  cb->setChecked(GetBoolAt(timecode));
+  if (qIsNaN(timecode)) {
+    cb->setTristate(true);
+    cb->setCheckState(Qt::PartiallyChecked);
+  } else {
+    cb->setTristate(false);
+    cb->setChecked(GetBoolAt(timecode));
+  }
 
   cb->blockSignals(false);
 

effects/fields/doublefield.cpp

@@ -86,7 +86,11 @@ QWidget *DoubleField::CreateWidget()
 
 void DoubleField::UpdateWidgetValue(QWidget *widget, double timecode)
 {
-  static_cast<LabelSlider*>(widget)->SetValue(GetDoubleAt(timecode));
+  if (qIsNaN(timecode)) {
+    static_cast<LabelSlider*>(widget)->SetValue(qSNaN());
+  } else {
+    static_cast<LabelSlider*>(widget)->SetValue(GetDoubleAt(timecode));
+  }
 }
 
 void DoubleField::ValueHasBeenSet()

effects/internal/richtexteffect.cpp

@@ -179,9 +179,6 @@ void RichTextEffect::redraw(double timecode)
 
     p.translate(-shadow_x_offset, -shadow_y_offset);
     clip_rect.translate(shadow_x_offset, shadow_y_offset);
-
-
-
   }
 
   td.drawContents(&p, clip_rect);