fixed #654

effects/effect.cpp

@@ -123,7 +123,8 @@ Effect::Effect(Clip* c, const EffectMeta *em) :
   isOpen(false),
   bound(false),
   iterations(1),
-  enabled_(true)
+  enabled_(true),
+  expanded_(true)
 {
   if (em != nullptr) {
     // set up UI from effect file
@@ -508,6 +509,16 @@ bool Effect::IsEnabled() {
   return enabled_;
 }
 
+bool Effect::IsExpanded()
+{
+  return expanded_;
+}
+
+void Effect::SetExpanded(bool e)
+{
+  expanded_ = e;
+}
+
 void Effect::SetEnabled(bool b) {
   enabled_ = b;
   emit EnabledChanged(b);

effects/effect.h

@@ -154,6 +154,7 @@ public:
   int gizmo_count();
 
   bool IsEnabled();
+  bool IsExpanded();
 
   virtual void refresh();
 
@@ -214,6 +215,7 @@ public:
 public slots:
   void FieldChanged();
   void SetEnabled(bool b);
+  void SetExpanded(bool e);
 signals:
   void EnabledChanged(bool);
 private slots:
@@ -243,6 +245,7 @@ private:
   int iterations;
 
   bool enabled_;
+  bool expanded_;
 
   int flags_;
 

ui/collapsiblewidget.cpp

@@ -87,6 +87,13 @@ bool CollapsibleWidget::IsExpanded() {
   return contents->isVisible();
 }
 
+void CollapsibleWidget::SetExpanded(bool s)
+{
+  contents->setVisible(s);
+  set_button_icon(s);
+  emit visibleChanged(s);
+}
+
 bool CollapsibleWidget::IsSelected()
 {
   return selected;
@@ -116,9 +123,7 @@ void CollapsibleWidget::SetTitle(const QString &s) {
 }
 
 void CollapsibleWidget::on_visible_change() {
-  contents->setVisible(!contents->isVisible());
-  set_button_icon(contents->isVisible());
-  emit visibleChanged();
+  SetExpanded(!IsExpanded());
 }
 
 CollapsibleWidgetHeader::CollapsibleWidgetHeader(QWidget* parent) : QWidget(parent), selected(false) {

ui/collapsiblewidget.h

@@ -52,6 +52,7 @@ public:
   void SetTitle(const QString &);
   bool IsFocused();
   bool IsExpanded();
+  void SetExpanded(bool s);
   bool IsSelected();
 protected:
   QCheckBox* enabled_check;
@@ -68,7 +69,7 @@ private:
 
 signals:
   void deselect_others(QWidget*);
-  void visibleChanged();
+  void visibleChanged(bool);
 
 private slots:
   void on_visible_change();

ui/effectui.cpp

@@ -68,6 +68,9 @@ EffectUI::EffectUI(Effect* e) :
   QWidget* ui = new QWidget(this);
   SetContents(ui);
 
+  SetExpanded(e->IsExpanded());
+  connect(this, SIGNAL(visibleChanged(bool)), e, SLOT(SetExpanded(bool)));
+
   layout_ = new QGridLayout(ui);
   layout_->setSpacing(4);