/**
 * PANDA 3D SOFTWARE
 * Copyright (c) Carnegie Mellon University.  All rights reserved.
 *
 * All use of this software is subject to the terms of the revised BSD
 * license.  You should have received a copy of this license along
 * with this source code in a file named "LICENSE."
 *
 * @file pStatGraph.h
 * @author drose
 * @date 2000-07-19
 */

#ifndef PSTATGRAPH_H
#define PSTATGRAPH_H

#include "pandatoolbase.h"

#include "pStatMonitor.h"
#include "pStatClientData.h"

#include "luse.h"
#include "vector_int.h"

#include "pmap.h"

class PStatView;

/**
 * This is an abstract base class for several different kinds of graphs that
 * have a few things in common, like labels and guide bars.
 */
class PStatGraph {
public:
  PStatGraph(PStatMonitor *monitor, int xsize, int ysize);
  virtual ~PStatGraph();

  INLINE PStatMonitor *get_monitor() const;

  INLINE int get_num_labels() const;
  INLINE int get_label_collector(int n) const;
  INLINE std::string get_label_name(int n) const;
  INLINE LRGBColor get_label_color(int n) const;

  INLINE void set_target_frame_rate(double frame_rate);
  INLINE double get_target_frame_rate() const;

  INLINE int get_xsize() const;
  INLINE int get_ysize() const;

  enum GuideBarStyle {
    GBS_normal,
    GBS_target,
    GBS_user,
  };

  class GuideBar {
  public:
    GuideBar(double height, const std::string &label, GuideBarStyle style);
    GuideBar(const GuideBar &copy);

    double _height;
    std::string _label;
    GuideBarStyle _style;
  };

  enum GuideBarUnits {
    GBU_hz         = 0x0001,
    GBU_ms         = 0x0002,
    GBU_named      = 0x0004,
    GBU_show_units = 0x0008,
  };

  int get_num_guide_bars() const;
  const GuideBar &get_guide_bar(int n) const;

  int get_num_user_guide_bars() const;
  GuideBar get_user_guide_bar(int n) const;
  void move_user_guide_bar(int n, double height);
  int add_user_guide_bar(double height);
  void remove_user_guide_bar(int n);
  int find_user_guide_bar(double from_height, double to_height) const;

  INLINE void set_guide_bar_units(int unit_mask);
  INLINE int get_guide_bar_units() const;
  INLINE void set_guide_bar_unit_name(const std::string &unit_name);
  INLINE const std::string &get_guide_bar_unit_name() const;

  static std::string format_number(double value);
  static std::string format_number(double value, int guide_bar_units,
                              const std::string &unit_name = std::string());

protected:
  virtual void normal_guide_bars()=0;
  void update_guide_bars(int num_bars, double scale);
  GuideBar make_guide_bar(double value, GuideBarStyle style = GBS_normal) const;

  bool _labels_changed;
  bool _guide_bars_changed;

  PT(PStatMonitor) _monitor;

  double _target_frame_rate;

  int _xsize;
  int _ysize;

  // Table of the collectors that should be drawn as labels, in order from
  // bottom to top.
  typedef vector_int Labels;
  Labels _labels;

  typedef pvector<GuideBar> GuideBars;
  GuideBars _guide_bars;
  int _guide_bar_units;
  std::string _unit_name;
};

#include "pStatGraph.I"

#endif