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// systemtap grapher
// Copyright (C) 2009 Red Hat Inc.
//
// This file is part of systemtap, and is free software.  You can
// redistribute it and/or modify it under the terms of the GNU General
// Public License (GPL); either version 2, or (at your option) any
// later version.

#ifndef SYSTEMTAP_GRAPHWIDGET_H
#define SYSTEMTAP_GRAPHWIDGET_H

#include <string>
#include <vector>
#include <tr1/memory>

#include <gtkmm.h>
#include <libglademm.h>
#include <Graph.hxx>

namespace systemtap
{
  class CairoPlayButton;

  class DataModelColumns : public Gtk::TreeModelColumnRecord
  {
  public:
    DataModelColumns()
    {
      add(_dataEnabled);
      add(_dataName);
      add(_dataTitle);
      add(_graphData);
    }
    Gtk::TreeModelColumn<bool> _dataEnabled;
    Gtk::TreeModelColumn<Glib::ustring> _dataName;
    Gtk::TreeModelColumn<Glib::ustring> _dataTitle;
    Gtk::TreeModelColumn<std::tr1::shared_ptr<GraphDataBase> > _graphData;
  };
  
  class GraphWidget : public Gtk::DrawingArea
  {
  public:
    GraphWidget();
    virtual ~GraphWidget();
    void addGraphData(std::tr1::shared_ptr<GraphDataBase> data);
    void addGraph();

  protected:
    typedef std::vector<std::tr1::shared_ptr<Graph> > GraphList;
    GraphList _graphs;
    typedef std::vector<std::tr1::shared_ptr<GraphDataBase> > GraphDataList;
    GraphDataList _graphData;
    // For click and drag
    std::tr1::shared_ptr<Graph> _activeGraph;
    // Dragging all graphs simultaneously, or perhaps seperately
    typedef std::vector<std::pair<double, double> > DragList;
    DragList dragCoords;
    //Override default signal handler:
    virtual bool on_expose_event(GdkEventExpose* event);
    virtual bool on_motion_notify_event(GdkEventMotion* event);
    virtual bool on_button_press_event(GdkEventButton* event);
    virtual bool on_button_release_event(GdkEventButton* event);
    virtual bool on_scroll_event(GdkEventScroll* event);
    bool on_timeout();
    virtual void on_size_request(Gtk::Requisition* req);
    bool _trackingDrag;
    double _dragOriginX;
    double _dragOriginY;
    double _dragOrigLeft;
    double _dragOrigRight;
    double _width;
    double _height;
    Glib::RefPtr<Gnome::Glade::Xml> _refXmlDataDialog;
    Gtk::Dialog* _dataDialog;
    Gtk::TreeView* _dataTreeView;
    void onDataDialogCancel();
    void onDataDialogOpen();
    void onDataDialogClose();
    bool onHoverTimeout();
    DataModelColumns _dataColumns;
    Glib::RefPtr<Gtk::ListStore> _listStore;
    sigc::connection _hover_timeout_connection;
    std::tr1::shared_ptr<CairoTextBox> _hoverText;
    double _mouseX;
    double _mouseY;
    int64_t _globalTimeBase;
    bool _timeBaseInitialized;
    std::tr1::shared_ptr<Graph> getGraphUnderPoint(double x, double y);
    void establishHoverTimeout();
    Gtk::CheckButton* _relativeTimesButton;
    bool _displayRelativeTimes;
    void onRelativeTimesButtonClicked();
    void onRowChanged(const Gtk::TreeModel::Path&,
                      const Gtk::TreeModel::iterator&);
    sigc::connection _listConnection;
    bool no_select_fun(const Glib::RefPtr<Gtk::TreeModel>& model,
                       const Gtk::TreeModel::Path& path,
                       bool)
    {
      return false;
    }
  };
}
#endif // SYSTEMTAP_GRAPHWIDGET_H