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// "$Id: Fl_Overlay_Window.H 7903 2010-11-28 21:06:39Z matt $"
//
// Overlay window header file for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2010 by Bill Spitzak and others.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems on the following page:
//
// http://www.fltk.org/str.php
//
/* \file
Fl_Overlay_Window class . */
#ifndef Fl_Overlay_Window_H
#define Fl_Overlay_Window_H
#include "Fl_Double_Window.H"
/**
This window provides double buffering and also the ability to draw the
"overlay" which is another picture placed on top of the main image. The
overlay is designed to be a rapidly-changing but simple graphic such as
a mouse selection box. Fl_Overlay_Window uses the overlay
planes provided by your graphics hardware if they are available.
<P>If no hardware support is found the overlay is simulated by drawing
directly into the on-screen copy of the double-buffered window, and
"erased" by copying the backbuffer over it again. This means the
overlay will blink if you change the image in the window.
*/
class FL_EXPORT Fl_Overlay_Window : public Fl_Double_Window {
friend class _Fl_Overlay;
virtual void draw_overlay() = 0;
Fl_Window *overlay_;
public:
void show();
void flush();
void hide();
void resize(int,int,int,int);
~Fl_Overlay_Window();
int can_do_overlay();
void redraw_overlay();
/**
Creates a new Fl_Overlay_Window widget using the given
position, size, and label (title) string. If the
positions (x,y) are not given, then the window manager
will choose them.
*/
Fl_Overlay_Window(int W, int H, const char *l=0)
: Fl_Double_Window(W,H,l) {overlay_ = 0; force_doublebuffering_=1; image(0); }
/**
See Fl_Overlay_Window::Fl_Overlay_Window(int W, int H, const char *l=0)
*/
Fl_Overlay_Window(int X, int Y, int W, int H, const char *l=0)
: Fl_Double_Window(X,Y,W,H,l) {overlay_ = 0; force_doublebuffering_=1; image(0); }
void show(int a, char **b) {Fl_Double_Window::show(a,b);}
};
#endif
//
// End of "$Id: Fl_Overlay_Window.H 7903 2010-11-28 21:06:39Z matt $".
//
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