| DRC | 2ff39b8 | 2011-07-28 08:38:59 +0000 | [diff] [blame] | 1 | // |
| 2 | // "$Id: Fl_Overlay_Window.H 7903 2010-11-28 21:06:39Z matt $" |
| 3 | // |
| 4 | // Overlay window header file for the Fast Light Tool Kit (FLTK). |
| 5 | // |
| 6 | // Copyright 1998-2010 by Bill Spitzak and others. |
| 7 | // |
| 8 | // This library is free software; you can redistribute it and/or |
| 9 | // modify it under the terms of the GNU Library General Public |
| 10 | // License as published by the Free Software Foundation; either |
| 11 | // version 2 of the License, or (at your option) any later version. |
| 12 | // |
| 13 | // This library is distributed in the hope that it will be useful, |
| 14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | // Library General Public License for more details. |
| 17 | // |
| 18 | // You should have received a copy of the GNU Library General Public |
| 19 | // License along with this library; if not, write to the Free Software |
| 20 | // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
| 21 | // USA. |
| 22 | // |
| 23 | // Please report all bugs and problems on the following page: |
| 24 | // |
| 25 | // http://www.fltk.org/str.php |
| 26 | // |
| 27 | |
| 28 | /* \file |
| 29 | Fl_Overlay_Window class . */ |
| 30 | |
| 31 | #ifndef Fl_Overlay_Window_H |
| 32 | #define Fl_Overlay_Window_H |
| 33 | |
| 34 | #include "Fl_Double_Window.H" |
| 35 | |
| 36 | /** |
| 37 | This window provides double buffering and also the ability to draw the |
| 38 | "overlay" which is another picture placed on top of the main image. The |
| 39 | overlay is designed to be a rapidly-changing but simple graphic such as |
| 40 | a mouse selection box. Fl_Overlay_Window uses the overlay |
| 41 | planes provided by your graphics hardware if they are available. |
| 42 | <P>If no hardware support is found the overlay is simulated by drawing |
| 43 | directly into the on-screen copy of the double-buffered window, and |
| 44 | "erased" by copying the backbuffer over it again. This means the |
| 45 | overlay will blink if you change the image in the window. |
| 46 | */ |
| 47 | class FL_EXPORT Fl_Overlay_Window : public Fl_Double_Window { |
| 48 | friend class _Fl_Overlay; |
| 49 | virtual void draw_overlay() = 0; |
| 50 | Fl_Window *overlay_; |
| 51 | public: |
| 52 | void show(); |
| 53 | void flush(); |
| 54 | void hide(); |
| 55 | void resize(int,int,int,int); |
| 56 | ~Fl_Overlay_Window(); |
| 57 | int can_do_overlay(); |
| 58 | void redraw_overlay(); |
| 59 | /** |
| 60 | Creates a new Fl_Overlay_Window widget using the given |
| 61 | position, size, and label (title) string. If the |
| 62 | positions (x,y) are not given, then the window manager |
| 63 | will choose them. |
| 64 | */ |
| 65 | Fl_Overlay_Window(int W, int H, const char *l=0) |
| 66 | : Fl_Double_Window(W,H,l) {overlay_ = 0; force_doublebuffering_=1; image(0); } |
| 67 | /** |
| 68 | See Fl_Overlay_Window::Fl_Overlay_Window(int W, int H, const char *l=0) |
| 69 | */ |
| 70 | Fl_Overlay_Window(int X, int Y, int W, int H, const char *l=0) |
| 71 | : Fl_Double_Window(X,Y,W,H,l) {overlay_ = 0; force_doublebuffering_=1; image(0); } |
| 72 | void show(int a, char **b) {Fl_Double_Window::show(a,b);} |
| 73 | }; |
| 74 | |
| 75 | #endif |
| 76 | |
| 77 | // |
| 78 | // End of "$Id: Fl_Overlay_Window.H 7903 2010-11-28 21:06:39Z matt $". |
| 79 | // |