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FLTK - Fast Light Tool Kit - https://github.com/fltk/fltk - cross platform GUI development
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83 lines
2.5 KiB
83 lines
2.5 KiB
// |
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// "$Id$" |
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// |
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// Overlay window header file 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_Overlay_Window class . */ |
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#ifndef Fl_Overlay_Window_H |
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#define Fl_Overlay_Window_H |
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#include "Fl_Double_Window.H" |
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/** |
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This window provides double buffering and also the ability to draw the |
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"overlay" which is another picture placed on top of the main image. The |
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overlay is designed to be a rapidly-changing but simple graphic such as |
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a mouse selection box. Fl_Overlay_Window uses the overlay |
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planes provided by your graphics hardware if they are available. |
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<P>If no hardware support is found the overlay is simulated by drawing |
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directly into the on-screen copy of the double-buffered window, and |
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"erased" by copying the backbuffer over it again. This means the |
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overlay will blink if you change the image in the window. |
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*/ |
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class FL_EXPORT Fl_Overlay_Window : public Fl_Double_Window { |
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#ifndef FL_DOXYGEN |
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friend class _Fl_Overlay; |
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friend class Fl_Window_Driver; |
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#endif |
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public: |
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/** |
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You must subclass Fl_Overlay_Window and provide this method. |
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It is just like a draw() method, except it draws the overlay. |
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The overlay will have already been "cleared" when this is called. You |
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can use any of the routines described in <FL/fl_draw.H>. |
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*/ |
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virtual void draw_overlay() = 0; |
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private: |
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Fl_Window *overlay_; |
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public: |
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void show(); |
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void hide(); |
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void flush(); |
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void resize(int,int,int,int); |
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~Fl_Overlay_Window(); |
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/** Returns non-zero if there's hardware overlay support */ |
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int can_do_overlay(); |
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void redraw_overlay(); |
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protected: |
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/** |
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See Fl_Overlay_Window::Fl_Overlay_Window(int X, int Y, int W, int H, const char *l=0) |
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*/ |
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Fl_Overlay_Window(int W, int H, const char *l=0); |
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/** |
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Creates a new Fl_Overlay_Window widget using the given |
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position, size, and label (title) string. If the |
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positions (x,y) are not given, then the window manager |
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will choose them. |
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*/ |
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Fl_Overlay_Window(int X, int Y, int W, int H, const char *l=0); |
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public: |
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void show(int a, char **b) {Fl_Double_Window::show(a,b);} |
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virtual Fl_Overlay_Window *as_overlay_window() {return this; } |
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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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