timeline-layout.hpp

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/*
  TIMELINE-LAYOUT.hpp  -  global timeline layout management and display control

  Copyright (C)         Lumiera.org
    2016,               Hermann Vosseler <Ichthyostega@web.de>

  This program is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License as
  published by the Free Software Foundation; either version 2 of
  the License, or (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/


#ifndef STAGE_TIMELINE_TIMELINE_LAYOUT_H
#define STAGE_TIMELINE_TIMELINE_LAYOUT_H

#include "stage/gtk-base.hpp"
#include "stage/timeline/display-manager.hpp"
#include "stage/timeline/display-evaluation.hpp"
#include "stage/timeline/header-pane-widget.hpp"
#include "stage/timeline/body-canvas-widget.hpp"
#include "stage/model/zoom-metric.hpp"
#include "stage/model/canvas-hook.hpp"
#include "stage/model/view-hook.hpp"
#include "lib/time/timevalue.hpp"




namespace stage  {
namespace timeline {
  
  using lib::time::Time;
  
  class TrackHeadWidget;
  class TrackBody;
  
  
  class TimelineLayout
    : public model::ZoomMetric<DisplayManager>
    , protected model::ViewHook<TrackHeadWidget>
    , protected model::ViewHook<TrackBody>
    , public LayoutElement
    {
      Glib::PropertyProxy<int> paneSplitPosition_;
      
      BodyCanvasWidget bodyCanvas_;
      HeaderPaneWidget headerPane_;
      
      DisplayEvaluation displayEvaluation_;
      
    public:
      TimelineLayout (Gtk::Paned&);
     ~TimelineLayout();
      
      void installRootTrack (TrackHeadWidget&,TrackBody&);
      void setupStructure   (LayoutElement&);
      
      Gtk::WidgetPath getBodyWidgetPath()  const;
      
      
    protected: /* ==== Interface: LayoutManager ===== */
      
      void triggerDisplayEvaluation()  override;

    protected: /* ==== Interface: LayoutElement ===== */
      
      void establishLayout (DisplayEvaluation&)  override;
      void completeLayout (DisplayEvaluation&)   override;
      
      
    protected: /* ==== Interface: DisplayViewHooks===== */
      
      model::ViewHook<TrackHeadWidget>& getHeadHook()  override { return *this;       };
      model::ViewHook<TrackBody>&       getBodyHook()  override { return *this;       };
      model::CanvasHook<Gtk::Widget>&   getClipHook()  override { return bodyCanvas_; };
      
    protected: /* ==== Interface: ViewHook ===== */
      
      void hook   (TrackHeadWidget&)          override;
      void remove (TrackHeadWidget&)          override;
      void rehook (TrackHeadWidget&) noexcept override;
      
      void hook   (TrackBody&)          override;
      void remove (TrackBody&)          override;
      void rehook (TrackBody&) noexcept override;

    private:/* ===== Internals ===== */
      void syncZoomWindow (PAdjustment);
      void sizeZoomWindow (Gtk::Allocation&);
    };
  
  
}}// namespace stage::timeline
#endif /*STAGE_TIMELINE_TIMELINE_LAYOUT_H*/