//
// $Id$
//
#ifndef _XWIN_H_
#define _XWIN_H_

#include <X11/Xlib.h>
#include <X11/Xutil.h>
#ifdef HAVE_XPM
#include <X11/xpm.h>
#endif
#ifdef HAVE_IOSTREAM
#include <iostream>
#else
#include <iostream>
#endif
#include <string>

#define XWIN_H_CVSID "$Id$"

class XWin;
class Xrm;

typedef void (XWin::*EventCallBack)( XEvent &event );


class XWin {
public:
  XWin ();
  XWin( int argc, char *argv[], int x, int y, int width, int height );
  //XWin( int& argc, char *argv[], char *geometry );
  virtual ~XWin( void );
  void XWinInit ( int argc, char* argv[], char* geometry, Xrm* xrmp );

  int x( void ) { return x_; }
  void x( int val ) { x_ = val; }
  int y( void ) { return y_; }
  void y( int val ) { y_ = val; }
  int width( void ) { return width_; }
  void width( int val ) { width_ = val; }
  int height( void ) { return height_; }
  void height( int val ) { height_ = val; }
  Display *display( void ) { return display_; }
  Window window( void ) { return window_; }
  int done( void ) { return done_; }
  void done( int val ) { done_ = val; }
  void title( const char *str ) { XStoreName( display_, window_, str ); }
  void iconname( const char *str ) { XSetIconName( display_, window_, str ); }

  void clear( void ) { XClearWindow( display_, window_ ); }
  void clear( int x, int y, int width, int height )
    { XClearArea( display_, window_, x, y, width, height, False ); }
  unsigned long allocColor( const char *name );
  void setForeground( unsigned long pixelvalue )
    { XSetForeground( display_, gc_, pixelvalue ); }
  void setBackground( unsigned long pixelvalue )
    { XSetBackground( display_, gc_, pixelvalue ); }
  void setStipple( Pixmap stipple)
    { if (!doStippling_) return;
      XSetStipple(display_, gc_, stipple);
      XGCValues xgcv;
      xgcv.fill_style = FillOpaqueStippled;
      XChangeGC (display_, gc_, GCFillStyle, &xgcv); }
  void setStippleN (int n) {setStipple(stipples_[n]); }
  Pixmap createPixmap(char* data, unsigned int w, unsigned int h) {
      return XCreatePixmapFromBitmapData(display_, window_, data, w, h,
      0, 1, 1); }
  unsigned long foreground( void ) { return fgcolor_; }
  unsigned long background( void ) { return bgcolor_; }
  void resize( int width, int height )
    { XResizeWindow( display_, window_, width, height ); }
  void lineWidth( int width )
    {
      XGCValues xgcv;
      xgcv.line_width = width;
      XChangeGC( display_, gc_, GCLineWidth, &xgcv );
    }
  void drawLine( int x1, int y1, int x2, int y2 )
    { XDrawLine( display_, window_, gc_, x1, y1, x2, y2 ); }
  void drawRectangle( int x, int y, int width, int height )
    { XDrawRectangle( display_, window_, gc_, x, y, width, height ); }
  void drawFilledRectangle( int x, int y, int width, int height )
    { XFillRectangle( display_, window_, gc_, x, y, width + 1, height + 1 ); }
  void drawString( int x, int y, const char *str )
    { XDrawString( display_, window_, gc_, x, y, str, strlen( str ) ); }
  void copyArea( int src_x, int src_y, int width, int height, int dest_x, int dest_y )
    { XCopyArea( display_, window_, window_, gc_, src_x, src_y, width, height, dest_x, dest_y ); }
  int textWidth( const char *str, int n )
    { return XTextWidth( font_, str, n ); }
  int textWidth( const char *str )
    { return textWidth( str, strlen( str ) ); }
  int textAscent( void ) { return font_->ascent; }
  int textDescent( void ) { return font_->descent; }
  int textHeight( void ) { return textAscent() + textDescent(); }


  virtual void checkevent( void );
  void map( void ) { XMapWindow( display_, window_ ); }
  void unmap( void ) { XUnmapWindow( display_, window_ ); }
  void flush( void ) { XFlush( display_ ); }

  const char *getResource( const char *name );
  const char *getResourceOrUseDefault( const char *name, const char* defaultVal );
  const int isResourceTrue( const char* name ) {
    return (!strncasecmp(getResource(name),"True", 5)); }
  void dumpResources(std::ostream &os );
  
protected:
  class Event {
  public:
    Event( XWin *parent, int event, EventCallBack callBack );
    virtual ~Event( void ){}

    friend class XWin;

    void callBack( XEvent &event )
      { if ( event.type == event_ ) (parent_->*callBack_)( event ); }

  protected:
    XWin *parent_;
    EventCallBack callBack_;
    int event_;
    long mask_;
  private:
    Event *next_;
  };

  int x_, y_;                   //  position of the window
  int width_, height_;          //  width and height of the window
  Display       *display_;      //  Connection to X display
  Window        window_;        //  Application's main window
  GC            gc_;            //  The graphics context for the window
  XFontStruct   *font_;         //  Info on the default font
  char          *name_;         //  Application's name
  XTextProperty title_;         //  Window name for title bar
  XTextProperty iconname_;      //  Icon name for icon label
  unsigned long fgcolor_;       //  Foreground color of the window
  unsigned long bgcolor_;       //  Background color of the window
  XWindowAttributes attr_;      //  Attributes of the window
  XWMHints      *wmhints_;      //  Hints for the window manager
  XSizeHints    *sizehints_;    //  Size hints for window manager
  XClassHint    *classhints_;   //  Class hint for window manager
  Event         *events_;       //  List of Events for this window
  int           done_;          //  If true the application is finished.
  Atom          wm_, wmdelete_; //  Used to handle delete Events
  Colormap      colormap_;      //  The colormap
  char		display_name_[256];  //  Display name string.
  char*		geometry_;	//  geometry string.
  Xrm*		xrmptr_;	//  Pointer to the XOSView xrm.  FIXME???
  int		doStippling_;	//  Either 0 or 1.
  Pixmap	stipples_[4];	//  Array of Stipple masks.

  void init( int argc, char *argv[] );
  void getGeometry( void );
  int getPixmap(Pixmap *);
  void setDisplayName (const char* new_display_name) { strncpy
    (display_name_, new_display_name, 256); }
  const char* displayName () { return display_name_; }

  void addEvent( Event *event );
  void setColors( void );
  void openDisplay( void );
  void setHints( int argc, char *argv[] );
  void setFont( void );
  void selectEvents( long mask );
  void ignoreEvents( long mask );
  void configureEvent( XEvent &event );
  void mappingNotify( XEvent &event )
    { XRefreshKeyboardMapping( &event.xmapping ); }
  void deleteEvent( XEvent &event );
  //void usage( void );
  Colormap colormap( void ) { return colormap_; }
  int screen( void ) { return DefaultScreen( display_ ); }
private:
};

#endif