Timeline is no longer zoomed in to far on startup. See timline-view-window.hpp int64_t timeScale for explanation

src/gui/panels/timeline-panel.cpp

@@ -138,12 +138,13 @@ TimelinePanel::TimelinePanel (workspace::PanelManager &panel_manager,
   // wire the zoom slider to react on timeline state changes
   zoomScale.wireTimelineState (timelineWidget->get_state(),
                                timelineWidget->state_changed_signal());
-  
+
   // Set the initial UI state
   update_sequence_chooser();
   update_tool_buttons();
   update_zoom_buttons();
   show_time (Time::ZERO);
+  std::cout << timelineWidget->get_state()->get_view_window().get_time_scale() << "\n";
 }
 
 const char*
@@ -335,17 +336,17 @@ TimelinePanel::update_zoom_buttons()
 {
   REQUIRE(timelineWidget);
 
-  const shared_ptr<timeline::TimelineState> state =
-    timelineWidget->get_state();
-  if(state)
-    {
-      timeline::TimelineViewWindow &viewWindow = 
-        state->get_view_window();
-      
-      zoomIn.set_sensitive(viewWindow.get_time_scale() != 1);
-      zoomOut.set_sensitive(viewWindow.get_time_scale()
-        != TimelineWidget::MaxScale);
-    }
+  int64_t current_scale =
+        timelineWidget->get_state()->get_view_window().get_time_scale();
+
+  double linear_scale =
+      (double) current_scale / (double) TimelineWidget::MaxScale;
+
+  /* We have to Revese the Smoothing */
+  double new_relative_scale =
+      pow(linear_scale,(1.0/9.0));
+
+  timelineWidget->zoom_view (new_relative_scale);
 }
 
 void

src/gui/widgets/timeline/timeline-ibeam-tool.cpp

@@ -180,8 +180,8 @@ IBeamTool::on_motion_notify_event(GdkEventMotion *event)
 bool
 IBeamTool::on_scroll_slide_timer()
 {
-  const Gdk::Rectangle body_rect(get_body_rectangle());     
-  view_window().shift_view(body_rect.get_width(), scrollSlideRate);
+  const Gdk::Rectangle body_rect (get_body_rectangle());
+  view_window().shift_view (body_rect.get_width(), scrollSlideRate);
     
   // Return true to keep the timer going
   return true;

src/gui/widgets/timeline/timeline-state.cpp

@@ -52,19 +52,18 @@ TimelineState::TimelineState (shared_ptr<model::Sequence> source_sequence)
 {
   REQUIRE(sequence);
 
-  // Initialize the listener
+  // Initialize the selection listener
   selectionListener (TimeSpan (Time::ZERO, Duration::NIL));
-
-  ////////////////////////////////////////////////////////////TICKET #798: how to handle GUI default state
-  const int64_t DEFAULT_TIMELINE_SCALE =21000000;
-  
-  viewWindow.set_time_scale(DEFAULT_TIMELINE_SCALE);
-
   selectionListener.connect(
       mem_fun(*this, &TimelineState::on_selection_changed));
 
+  ////////////////////////////////////////////////////////////TICKET #798: how to handle GUI default state
+  const int64_t DEFAULT_TIMELINE_SCALE =6400;
+  
+  viewWindow.set_time_scale(DEFAULT_TIMELINE_SCALE);
+
   setSelection (Mutation::changeTime (Time(FSecs(2))));
-  setSelection (Mutation::changeDuration(Duration(FSecs(2))));
+  setSelection (Mutation::changeDuration (Duration(FSecs(2))));
   //////////////////////////////////////////////////////TICKET #797 : this is cheesy. Should provide a single Mutation to change all
 }
 

src/gui/widgets/timeline/timeline-state.hpp

@@ -49,7 +49,9 @@ typedef Control<TimeSpan> SelectionControl;
  * SelectionListener is a template class which emits a signal when
  * the value is changed by it's associated time::Control object.
  * SelectionListener wraps a sigc::signal that emits every time
- * the selection is changed
+ * the selection is changed by the time::Control object.
+ * SelectionListener does NOT emit the signal if a change to the
+ * selection is made outside of the Control/Listener partnership.
  */
 
 template<class TI>
@@ -66,7 +68,7 @@ class SelectionListener
     void
     operator() (TI const& changeValue)  const
       {
-        valueChangedSignal.emit(changeValue);
+        valueChangedSignal.emit (changeValue);
       }
 
 

src/gui/widgets/timeline/timeline-view-window.hpp

@@ -138,6 +138,13 @@ public:
 
 private:
   TimeVar timeOffset;
+
+  /**
+   * The scale of the Timline Body.
+   * @remarks This value represents the time span that is visible in
+   * the TimelineBodyWidget. Smaller numbers here will "zoom in"
+   * while larger numbers will "zoom out"
+   */
   int64_t timeScale;
   
   sigc::signal<void> changedSignal;

src/gui/widgets/timeline/timeline-zoom-scale.cpp

@@ -65,26 +65,27 @@ TimelineZoomScale::TimelineZoomScale()
   , button_step_size(0.03)
 {
   /* Setup the Slider Control */
-  slider.set_adjustment(adjustment);
-  slider.set_size_request(123,10);
-  slider.set_digits(6);
-  slider.set_inverted(true);
-  slider.set_draw_value(false);
+  slider.set_adjustment (adjustment);
+  slider.set_size_request (123,10);
+  slider.set_digits (6);
+
+  /* Inverted because smaller values "zoom in" */
+  slider.set_inverted (true);
+
+  slider.set_draw_value (false);
 
   /* Make our connections */
   zoomIn.signal_clicked().
-      connect(sigc::mem_fun(this, &TimelineZoomScale::on_zoom_in_clicked));
-
+      connect (sigc::mem_fun(this, &TimelineZoomScale::on_zoom_in_clicked));
   zoomOut.signal_clicked().
-      connect(sigc::mem_fun(this, &TimelineZoomScale::on_zoom_out_clicked));
-
+      connect (sigc::mem_fun(this, &TimelineZoomScale::on_zoom_out_clicked));
   adjustment.signal_value_changed().
-      connect(sigc::mem_fun(this, &TimelineZoomScale::on_zoom));
+      connect (sigc::mem_fun(this, &TimelineZoomScale::on_zoom));
 
   /* Add Our Widgets and show them */
-  pack_start(zoomOut,PACK_SHRINK);
-  pack_start(slider,PACK_SHRINK);
-  pack_start(zoomIn,PACK_SHRINK);
+  pack_start (zoomOut,PACK_SHRINK);
+  pack_start (slider,PACK_SHRINK);
+  pack_start (zoomIn,PACK_SHRINK);
 
   show_all();
 }
@@ -94,7 +95,8 @@ TimelineZoomScale::wireTimelineState (shared_ptr<TimelineState> currentState,
                                       TimelineWidget::TimelineStateChangeSignal stateChangeSignal)
 {
   on_timeline_state_changed (currentState);
-  stateChangeSignal.connect (sigc::mem_fun(this, &TimelineZoomScale::on_timeline_state_changed));
+  stateChangeSignal.connect (
+      sigc::mem_fun(this, &TimelineZoomScale::on_timeline_state_changed));
 }
 
 void
@@ -110,7 +112,6 @@ TimelineZoomScale::on_timeline_state_changed (shared_ptr<TimelineState> newState
       (double) current_scale / (double) TimelineWidget::MaxScale;
 
   /* We have to Revese the Smoothing */
-  TODO("Find a central place for ZoomSmoothingFactor Variable. right now it is 9.0");
   double new_relative_scale =
       pow(linear_scale,(1.0/9.0));
 
@@ -134,7 +135,7 @@ TimelineZoomScale::on_zoom_out_clicked()
 void
 TimelineZoomScale::on_zoom()
 {
-  zoomSignal.emit(adjustment.get_value()) ;
+  zoomSignal.emit (adjustment.get_value()) ;
 }
 
 sigc::signal<void, double>

src/gui/widgets/timeline/timeline-zoom-scale.hpp

@@ -51,6 +51,8 @@ public:
    */
   sigc::signal<void, double> signal_zoom();
 
+  void set_value(double val) { adjustment.set_value(val); }
+
   void wireTimelineState (shared_ptr<TimelineState> currentState,
                           TimelineWidget::TimelineStateChangeSignal);