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);

panels/effectcontrols.cpp

@@ -133,18 +133,7 @@ void EffectControls::menu_select(QAction* q) {
 void EffectControls::update_keyframes() {
   for (int i=0;i<open_effects_.size();i++) {
     EffectUI* ui = open_effects_.at(i);
-    Effect* effect = ui->GetEffect();
-
-    for (int j=0;j<effect->row_count();j++) {
-
-      EffectRow* row = effect->row(j);
-
-      for (int k=0;k<row->FieldCount();k++) {
-        EffectField* field = row->Field(k);
-
-        field->UpdateWidgetValue(ui->Widget(j, k), field->Now());
-      }
-    }
+    ui->UpdateFromEffect();
   }
 
   headers->update_zoom(zoom);
@@ -607,7 +596,20 @@ void EffectControls::Load() {
 
     if (mode_ == kTransitionNone) {
       for (int j=0;j<c->effects.size();j++) {
-        open_effect(layout, c->effects.at(j).get());
+
+        // Check if we've already opened an effect of this type before
+        bool already_opened = false;
+        for (int k=0;k<open_effects_.size();k++) {
+          if (open_effects_.at(k)->GetEffect()->meta == c->effects.at(j)->meta) {
+            open_effects_.at(k)->AddAdditionalEffect(c->effects.at(j).get());
+            already_opened = true;
+            break;
+          }
+        }
+
+        if (!already_opened) {
+          open_effect(layout, c->effects.at(j).get());
+        }
 
         // Check if one of the open effects contains the row currently active in the graph editor. If not, we'll have
         // to clear the graph editor later.

ui/effectui.cpp

@@ -83,6 +83,11 @@ EffectUI::EffectUI(Effect* e) :
   connect(enabled_check, SIGNAL(toggled(bool)), e, SLOT(FieldChanged()));
 }
 
+void EffectUI::AddAdditionalEffect(Effect *e)
+{
+  additional_effects_.append(e);
+}
+
 Effect *EffectUI::GetEffect()
 {
   return effect_;
@@ -96,6 +101,47 @@ int EffectUI::GetRowY(int row, QWidget* mapToWidget) {
       - title_bar->height();
 }
 
+void EffectUI::UpdateFromEffect()
+{
+  Effect* effect = GetEffect();
+
+  for (int j=0;j<effect->row_count();j++) {
+
+    EffectRow* row = effect->row(j);
+
+    for (int k=0;k<row->FieldCount();k++) {
+      EffectField* field = row->Field(k);
+
+      // Check if this UI object is attached to one effect or many
+      if (additional_effects_.isEmpty()) {
+
+        field->UpdateWidgetValue(Widget(j, k), field->Now());
+
+      } else {
+
+        bool same_value = true;
+
+        for (int i=0;i<additional_effects_.size();i++) {
+          EffectField* previous_field = i > 0 ? additional_effects_.at(i-1)->row(j)->Field(k) : field;
+          EffectField* additional_field = additional_effects_.at(i)->row(j)->Field(k);
+
+          if (additional_field->GetValueAt(additional_field->Now()) != previous_field->GetValueAt(previous_field->Now())) {
+            same_value = false;
+            break;
+          }
+        }
+
+        if (same_value) {
+          field->UpdateWidgetValue(Widget(j, k), field->Now());
+        } else {
+          field->UpdateWidgetValue(Widget(j, k), qSNaN());
+        }
+
+      }
+    }
+  }
+}
+
 QWidget *EffectUI::Widget(int row, int field)
 {
   return widgets_.at(row).at(field);

ui/effectui.h

@@ -9,17 +9,23 @@ class EffectUI : public CollapsibleWidget {
 public:
   EffectUI(Effect* e);
 
+  void AddAdditionalEffect(Effect* e);
+
   Effect* GetEffect();
 
   int GetRowY(int row, QWidget *mapToWidget);
 
-  QWidget* Widget(int row, int field);
+  void UpdateFromEffect();
+
 signals:
   void CutRequested();
   void CopyRequested();
   void TitleBarContextMenuRequested(const QPoint&);
 private:
+  QWidget* Widget(int row, int field);
+
   Effect* effect_;
+  QVector<Effect*> additional_effects_;
   QGridLayout* layout_;
   QVector<QLabel*> labels_;
   QVector< QVector<QWidget*> > widgets_;