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/*
 * Smithsonian Astrophysical Observatory, Cambridge, MA, USA
 * This code has been modified under the terms listed below and is made
 * available under the same terms.
 */

/*
 *	Copyright 1993-2004 George A Howlett.
 *
 *	Permission is hereby granted, free of charge, to any person obtaining
 *	a copy of this software and associated documentation files (the
 *	"Software"), to deal in the Software without restriction, including
 *	without limitation the rights to use, copy, modify, merge, publish,
 *	distribute, sublicense, and/or sell copies of the Software, and to
 *	permit persons to whom the Software is furnished to do so, subject to
 *	the following conditions:
 *
 *	The above copyright notice and this permission notice shall be
 *	included in all copies or substantial portions of the Software.
 *
 *	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *	EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 *	MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *	NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 *	LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 *	OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 *	WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#ifndef __BltGraphBar_h__
#define __BltGraphBar_h__

#include <tk.h>

#include "bltGraph.h"

typedef struct {
  int nSegments;
  Axis* xAxis;
  Axis* yAxis;
  float sum;
  int count;
  float lastY;
  size_t index;
} BarGroup;

typedef struct {
  float value;
  Axis* xAxis;
  Axis* yAxis;
} BarSetKey;

typedef enum {
  BARS_INFRONT, BARS_STACKED, BARS_ALIGNED, BARS_OVERLAP
} BarMode;

typedef struct {
  double aspect;
  Tk_3DBorder normalBg;
  int borderWidth;
  Margin margins[4];
  int backingStore;
  int doubleBuffer;
  Tk_Cursor cursor;
  TextStyle titleTextStyle;
  int reqHeight;
  XColor* highlightBgColor;
  XColor* highlightColor;
  int highlightWidth;
  int inverted;
  Tk_3DBorder plotBg;
  int plotBW;
  int xPad;
  int yPad;
  int plotRelief;
  int relief;
  ClosestSearch search;
  int stackAxes;
  const char *takeFocus; // nor used in C code
  const char *title;
  int reqWidth;
  int reqPlotWidth;
  int reqPlotHeight;

  // bar graph
  BarMode barMode;
  double barWidth;
  double baseline;
} BarGraphOptions;

class BarGraph : public Graph {
 public:
  BarGroup *barGroups_;
  int nBarGroups_;
  Tcl_HashTable setTable_;
  int maxBarSetSize_;

 protected:
  void resetAxes();
  void mapElements();
  void initBarSetTable();
  void destroyBarSets();
  void resetBarGroups();
  void computeBarStacks();

 public:
  BarGraph(ClientData, Tcl_Interp*, int, Tcl_Obj* const []);
  virtual ~BarGraph();

  void configure();
  int createPen(const char*, int, Tcl_Obj* const []);
  int createElement(int, Tcl_Obj* const []);

};

#endif