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button.h

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/*************************************************************************
 *
 *  AUTHOR: Wilson T
 *
 *  TITLE:  button.h
 *
 *  DATE: April 20, 1993
 *
 *  PURPOSE: Declaration of button class and constants.
 *
 *************************************************************************/

#include <stdlib.h>
#include "typedefs.h"
#include "scrnobj.h"
#include "viewport.h"
#include "display.h"
#include "messages.h"

enum  SHADOW_STYLE {TOP_LEFT, BOTTOM_RIGHT, TOP_RIGHT, BOTTOM_LEFT};
typedef bool BOOLEAN;

        /*************************
         *                       *
         * Constant Declarations *
         *                       *
         *************************/

const int BORDERX = 3;  // Distance of button text from button bounds
const int BORDERY = 2;   // " "
const int SHADOWS = 2;
const int FRAME = 1;
const int FONT    = SMALL_FONT;
const int FONT_SIZE = 5;

class PushButton:public ScrnObj{
  void  *surface;
  int string_height, string_width, X2, Y2, xdim, ydim;
  char  string[80];
  int Color, IdNum;
  BOOLEAN Activated, Drawn;

public:
  PushButton      (char*, int, int);
  PushButton      (char*, int, int, int, int);
  void Init       (Display *, int, int);
  ~PushButton     ()
    {if (Drawn) Erase(); delete surface;}
  void  Draw        ();
  void Erase      ();
  BOOLEAN ButtonBounds  (int, int);
  BOOLEAN ButtonStatus  ();
  int ButtonId      ();
  Message Dispatch    (Message &);
  int GetXDim     ();
  int GetYDim     ();
private:
  void set_constants  (char *, int, int);
  void image_size ();
  void  image_size  (int, int);
  void draw_shadows (SHADOW_STYLE, int);
  void draw_frame ();
  void name_button  ();
  void depress_button ();
  void redraw   ();
  void animate_button ();
};

inline PushButton::PushButton(char *name, int color, int Id)
  {set_constants(name, color, Id); image_size();
   xdim=X2-X; ydim=Y2-Y;}

inline PushButton::PushButton(char *name, int color, int Id, int x2, int y2)
  {set_constants(name, color, Id); image_size(x2, y2);
   xdim=X2-X; ydim=Y2-Y;}

inline void PushButton::image_size(int x2, int y2)
  {X2 = X+x2; Y2 = Y+y2;}

inline void PushButton::image_size()
  {X2 = X+string_width+(2*BORDERX)+(2*SHADOWS)+(2*FRAME);
  Y2 = Y+string_height+(2*BORDERY)+(2*SHADOWS)+(2*FRAME);}

inline void PushButton::animate_button()
  {if (Activated) depress_button(); else redraw();}

inline BOOLEAN PushButton::ButtonStatus()
  {return Activated;}

inline int PushButton::ButtonId()
  {return IdNum;}

inline int PushButton::GetXDim()
  {return xdim;}

inline int PushButton::GetYDim()
  {return ydim;}

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