ZtScale.H

/* $Id: ZtScale.H,v 1.9 2005/07/18 07:16:56 nikita Exp $ */

#if !defined __ZtScale_H

#define __ZtScale_H

#include <zm/ZtObject.H>


#define ztScaleLeft (0x4|0x1)
#define ztScaleRight    (0x4|0x2)
#define ztScaleUp   (0x8|0x1)
#define ztScaleDown (0x8|0x2)


class ZtScale : public ZtObject
{
private:

  char  szDefaultFormat[6]; /* = "%6.1f" */

protected:
  XColor xAxisColor;
  XColor xLabelColor;

  int   ver_dim;    /* TRUE if vertical */
  int   less_coord; /* TRUE if in top(v) and left(h) */
  int   more_coord; /* TRUE if in bottom(v) and right(h) */

  int   iCharsCount;    /* planned count of chars in one label */
  char  *szLabel;   /* memory for temporary label text */
  char  *szFormat;  /* format of label string for sprintf */

  int   big_notch_size, small_notch_size, labels_offset;
  float big_notch_step;     /* natural coord step */
  int   small_notch_freq;   /* count of small notches between two
                   big notches */

  Logic dots;       /* TRUE if notches are doted */
  Logic auto_step;  /* TRUE if notches are doted */

  ColorPixel    axisColor, labelColor;
  char          *axisColorName;
  char          *labelColorName;
  void      drawAxis ();
  void      drawLabels ();

  void      update_limitations ();

public:

  ZtScale (ZtMain* pManager, ZGroupId pxid, ZGroupId pyid,
       int dimension, ZGroupId nid);

  ~ZtScale();

  void      set_axis_color (const char* szColorName);
  void      set_axis_color (ColorPixel cpixel);
  ColorPixel    get_axis_color () const;
  const char*   get_axis_color_name () const;

  void      set_label_color (const char* szColorName);
  void      set_label_color (ColorPixel cpixel);
  ColorPixel    get_label_color () const;
  const char*   get_label_color_name () const;

  void      set_auto_step (Logic flag);
  Logic     get_auto_step () const;

  void      auto_step_calc ();

  void      set_label_step (float val);
  float     get_label_step () const;

  void      set_notch_freq (int cnt);
  int       get_notch_freq () const;

  void          set_doted_notches ();

  /* sizes[0] - big notches size (pixels);
     sizes[1] - small notches size (pixels);
     sizes[2] - labels offset from big notches (pixels; >=3).
     */
  void      set_sizes (int sizes[3]);
  void      get_sizes (int sizes[3]) const;

  void      set_chars_count (int new_count);
  int       get_chars_count () const;

  void      set_float_label_format (int iWidth, int iPrecision = 0);
  virtual char* print_label (char* label, float val);

  /* Non-trivial expose */
  virtual void  redraw ();

  /* Called when font change take place */
  virtual void  changed_state (int mask_of_changes);

  virtual const char*   class_id () const;

};


#endif  // ZtScale.H