reimplemented zooming controls

app/panel/timeline/timeline.cpp

@@ -42,10 +42,8 @@ TimelinePanel::TimelinePanel(QWidget *parent) :
   connect(view_->horizontalScrollBar(), SIGNAL(valueChanged(int)), ruler_, SLOT(SetScroll(int)));
   connect(ruler_, SIGNAL(TimeChanged(const int64_t&)), view_, SLOT(SetTime(const int64_t&)));
 
-  // FIXME: Test code
-  ruler_->SetScale(90.0);
-  view_->SetScale(90.0);
-  // End test code
+  // FIXME Magic number
+  SetScale(90.0);
 
   Retranslate();
 }
@@ -78,6 +76,16 @@ TimelineView *TimelinePanel::view()
   return view_;
 }
 
+void TimelinePanel::ZoomIn()
+{
+  SetScale(scale_ * 2);
+}
+
+void TimelinePanel::ZoomOut()
+{
+  SetScale(scale_ * 0.5);
+}
+
 void TimelinePanel::changeEvent(QEvent *e)
 {
   if (e->type() == QEvent::LanguageChange) {
@@ -91,3 +99,11 @@ void TimelinePanel::Retranslate()
   SetTitle(tr("Timeline"));
   SetSubtitle(tr("(none)"));
 }
+
+void TimelinePanel::SetScale(double scale)
+{
+  scale_ = scale;
+
+  ruler_->SetScale(scale_);
+  view_->SetScale(scale_);
+}

app/panel/timeline/timeline.h

@@ -41,6 +41,10 @@ public:
 
   TimelineView* view();
 
+  virtual void ZoomIn() override;
+
+  virtual void ZoomOut() override;
+
 protected:
   virtual void changeEvent(QEvent* e) override;
 
@@ -49,9 +53,13 @@ signals:
 private:
   void Retranslate();
 
+  void SetScale(double scale);
+
   TimelineView* view_;
 
   TimeRuler* ruler_;
+
+  double scale_;
 };
 
 #endif // TIMELINE_PANEL_H

app/panel/viewer/viewer.cpp

@@ -34,6 +34,16 @@ ViewerPanel::ViewerPanel(QWidget *parent) :
   Retranslate();
 }
 
+void ViewerPanel::ZoomIn()
+{
+  viewer_->SetScale(viewer_->scale() * 2);
+}
+
+void ViewerPanel::ZoomOut()
+{
+  viewer_->SetScale(viewer_->scale() * 0.5);
+}
+
 void ViewerPanel::SetTexture(GLuint tex)
 {
   viewer_->SetTexture(tex);

app/panel/viewer/viewer.h

@@ -34,6 +34,10 @@ class ViewerPanel : public PanelWidget {
 public:
   ViewerPanel(QWidget* parent);
 
+  virtual void ZoomIn() override;
+
+  virtual void ZoomOut() override;
+
 public slots:
   /**
    * @brief Set the texture to draw and draw it