rewrite nearly complete

panels/panels.cpp

@@ -25,6 +25,7 @@
 #include "effects/transition.h"
 #include "global/config.h"
 #include "global/debug.h"
+#include "global/math.h"
 
 #include <QScrollBar>
 #include <QCoreApplication>
@@ -33,7 +34,7 @@ QVector<Project*> panel_project;
 EffectControls* panel_effect_controls = nullptr;
 Viewer* panel_sequence_viewer = nullptr;
 Viewer* panel_footage_viewer = nullptr;
-Timeline* panel_timeline = nullptr;
+QVector<Timeline*> panel_timeline;
 GraphEditor* panel_graph_editor = nullptr;
 
 void update_ui(bool modified) {
@@ -41,14 +42,16 @@ void update_ui(bool modified) {
     panel_effect_controls->SetClips();
   }
   panel_effect_controls->update_keyframes();
-  panel_timeline->repaint_timeline();
+  for (int i=0;i<panel_timeline.size();i++) {
+    panel_timeline.at(i)->repaint_timeline();
+  }
   panel_sequence_viewer->update_viewer();
   panel_graph_editor->update_panel();
 }
 
 QDockWidget *get_focused_panel(bool force_hover) {
   QDockWidget* w = nullptr;
-  if (olive::CurrentConfig.hover_focus || force_hover) {
+  if (olive::config.hover_focus || force_hover) {
     for (int i=0;i<olive::panels.size();i++) {
       if (olive::panels.at(i)->underMouse()) {
         w = olive::panels.at(i);
@@ -78,8 +81,9 @@ void alloc_panels(QWidget* parent) {
   panel_project.append(first_project_panel);
   panel_effect_controls = new EffectControls(parent);
   panel_effect_controls->setObjectName("fx_controls");
-  panel_timeline = new Timeline(parent);
-  panel_timeline->setObjectName("timeline");
+  Timeline* first_timeline_panel = new Timeline(parent);
+  first_timeline_panel->setObjectName("timeline");
+  panel_timeline.append(first_timeline_panel);
   panel_graph_editor = new GraphEditor(parent);
   panel_graph_editor->setObjectName("graph_editor");
 }
@@ -89,12 +93,19 @@ void free_panels() {
   panel_sequence_viewer = nullptr;
   delete panel_footage_viewer;
   panel_footage_viewer = nullptr;
-  delete panel_project;
-  panel_project = nullptr;
+
+  for (int i=0;i<panel_project.size();i++) {
+    delete panel_project.at(i);
+  }
+  panel_project.clear();
+
   delete panel_effect_controls;
   panel_effect_controls = nullptr;
-  delete panel_timeline;
-  panel_timeline = nullptr;
+
+  for (int i=0;i<panel_timeline.size();i++) {
+    delete panel_timeline.at(i);
+  }
+  panel_timeline.clear();
 }
 
 void scroll_to_frame_internal(QScrollBar* bar, long frame, double zoom, int area_width) {