XGEnv.H

// XGEnv.H      $Revision: 1.4 $    $Date: 1999/06/30 14:27:32 $ 

#if !defined __XGEnv_H

#define __XGEnv_H


#include <zm/XDO.H>


#define BAD_DID     ((Drawable)BadValue)


/*************************************************************
 * X Graphic Environment
 *************************************************************/

class XGEnv : public XDO
{
protected:

  void  setup_font ();

public:

  XFontStruct*  fontInfo;
  GC        gc;

  XGEnv (const XDO& xdo);
  XGEnv (const XGEnv& xgenv);
  virtual ~XGEnv ();

  virtual Drawable  wid () const;

  // X Errors handler and exeption generator
  virtual void  x_error (int rc) const;

  // GC set values
  virtual void  set_line_width (int width);
  virtual void  set_line_style (int style);
  virtual void  set_foreground (ColorPixel pix);
  virtual void  set_background (ColorPixel pix);
  virtual void  set_function (int func);
  virtual void  set_font (const char* szFontName);
  virtual void  set_gc_as (const XGEnv& xgenv);

  // GC get values
  int   get_line_width () const;
  int   get_line_style () const;
  ColorPixel    get_foreground () const;
  ColorPixel    get_background () const;
  int   get_function () const;

  // force redraw of pixmap if it exists
  void      changed ();

  // quick exposure tools
  virtual void  use_pixmap (Pixmap pix_id); // use pixmap as a destination
  virtual Pixmap get_pixmap () const;   // get pixmap id or BadValue
  virtual Logic prepare_pixmap ();  // update pixmap with current size
  virtual void  reset_pixmap ();    // free pixmap
  virtual void  flush_pixmap ();    // put pixmap to the window

};

#endif  // XGEnv.H