Fl_Cairo_Window.H

//
// "$Id$"
//
// Main header file for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2010 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file.  If this
// file is missing or damaged, see the license at:
//
//     http://www.fltk.org/COPYING.php
//
// Please report all bugs and problems on the following page:
//
//     http://www.fltk.org/str.php
//
 
/* \file
    Fl_Cairo_Window Handling transparently a fltk window incorporte a cairo draw callback.
*/
 
#ifndef FL_CAIRO_WINDOW_H
# define FL_CAIRO_WINDOW_H
# ifdef FLTK_HAVE_CAIRO
 
// Cairo is currently supported for the following platforms:
// Win32, Apple Quartz, X11
#  include <FL/Fl.H>
#  include <FL/Fl_Double_Window.H>
 
class FL_EXPORT Fl_Cairo_Window : public Fl_Double_Window {
 
public:
  Fl_Cairo_Window(int w, int h) : Fl_Double_Window(w,h),draw_cb_(0) {}
 
protected:
  void draw() {
    Fl_Double_Window::draw();
    // manual method ? if yes explicitly get a cairo_context here
    if (!Fl::cairo_autolink_context()) 
      Fl::cairo_make_current(this); 
    if (draw_cb_) draw_cb_(this, Fl::cairo_cc());
  }
 
public:
  typedef void (*cairo_draw_cb) (Fl_Cairo_Window* self, cairo_t* def);
  void set_draw_cb(cairo_draw_cb  cb){draw_cb_=cb;}
private:
    cairo_draw_cb draw_cb_;
};
 
 
# endif // FLTK_HAVE_CAIRO
#endif // FL_CAIRO_WINDOW_H
 
//
// End of "$Id$" .
//