104 lines
2.5 KiB
C++
104 lines
2.5 KiB
C++
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//
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// "$Id$"
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//
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// OpenGL window group widget for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2010 by Bill Spitzak and others.
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//
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// This library is free software. Distribution and use rights are outlined in
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// the file "COPYING" which should have been included with this file. If this
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// file is missing or damaged, see the license at:
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//
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// http://www.fltk.org/COPYING.php
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//
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// Please report all bugs and problems on the following page:
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//
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// http://www.fltk.org/str.php
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//
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/* \file
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Fl_Gl_Window_Group widget . */
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#ifndef Fl_Gl_Window_Group_H
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#define Fl_Gl_Window_Group_H
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#include <FL/Fl_Gl_Window.H> //#include "Fl_Gl_Window.H"
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#include <FL/x.H> //#include "x.H"
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#define Fl_Gl_Window_Group xFl_Gl_Window_Group
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class Fl_Gl_Window_Group_INTERNAL;
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/**
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The Fl_Gl_Window_Group widget is an extended form of Fl_Gl_Window that
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can contain child widgets not specially modified to use OpenGL calls.
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After the main OpenGL area is drawn, child widgets are each drawn into an
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offscreen buffer (using the standard FLTK drawing routines), and then
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copied into the OpenGL window using a textured quad.
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*/
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class FL_EXPORT Fl_Gl_Window_Group : public Fl_Gl_Window {
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class Fl_Gl_Window_Group_INTERNAL *glstandin;
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Fl_Offscreen offscr;
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int offscr_w, offscr_h;
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uchar *imgbuf;
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GLContext children_context;
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unsigned int texid;
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void init(void);
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void adjust_offscr(int w, int h);
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public:
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~Fl_Gl_Window_Group(void);
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/**
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Creates a new Fl_Gl_Window_Group widget using the given size and label string.
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*/
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Fl_Gl_Window_Group(int W, int H, const char *l=0)
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: Fl_Gl_Window(W,H,l) {init();}
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/**
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Creates a new Fl_Gl_Window_Group widget using the given position,
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size, and label string.
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*/
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Fl_Gl_Window_Group(int X, int Y, int W, int H, const char *l=0)
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: Fl_Gl_Window(X,Y,W,H,l) {init();}
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void show(void);
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void hide(void);
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void clear(void);
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void flush(void);
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/**
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Handles the specified event.
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This method only receives events that were not used by any of the child
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widgets. Unlike most handle() methods, this should not call the
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inherited handle() method, or else an infinite loop will result.
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*/
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virtual int handle_gl(int event);
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protected:
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void draw(void);
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void draw_children(void);
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void draw_child(Fl_Widget& widget);
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/**
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Draws the main OpenGL area of the Fl_Gl_Window_Group.
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You \e \b must override the draw_gl() method.
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*/
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virtual void draw_gl(void);
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};
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#endif
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//
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// End of "$Id:$".
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//
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