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FLTK - Fast Light Tool Kit - https://github.com/fltk/fltk - cross platform GUI development
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52 lines
1.7 KiB
52 lines
1.7 KiB
// |
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// implementation of class Fl_Gl_Device_Plugin for the Fast Light Tool Kit (FLTK). |
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// |
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// Copyright 2010-2022 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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// https://www.fltk.org/COPYING.php |
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// |
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// Please see the following page on how to report bugs and issues: |
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// |
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// https://www.fltk.org/bugs.php |
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// |
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#include <config.h> |
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#include <FL/Fl_Gl_Window.H> |
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#include <FL/Fl_RGB_Image.H> |
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#include <FL/Fl_Device.H> |
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#include "Fl_Gl_Window_Driver.H" |
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/** |
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This class will make sure that OpenGL printing/screen capture is available if fltk_gl |
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was linked to the program |
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*/ |
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class Fl_Gl_Device_Plugin : public Fl_Device_Plugin { |
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public: |
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Fl_Gl_Device_Plugin() : Fl_Device_Plugin(name()) { } |
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const char *name() FL_OVERRIDE { return "opengl.device.fltk.org"; } |
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int print(Fl_Widget *w) FL_OVERRIDE { |
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Fl_Gl_Window *glw = w->as_gl_window(); |
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if (!glw) return 0; |
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Fl_RGB_Image *img = Fl_Gl_Window_Driver::driver(glw)->capture_gl_rectangle(0, 0, glw->w(), glw->h()); |
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img->scale(glw->w(), glw->h()); |
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img->draw(0, 0); |
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delete img; |
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return 1; |
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} |
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Fl_RGB_Image* rectangle_capture(Fl_Widget *widget, int x, int y, int w, int h) FL_OVERRIDE { |
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Fl_Gl_Window *glw = widget->as_gl_window(); |
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if (!glw) return NULL; |
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return Fl_Gl_Window_Driver::driver(glw)->capture_gl_rectangle(x, y, w, h); |
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} |
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}; |
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static Fl_Gl_Device_Plugin Gl_Device_Plugin; |
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// The purpose of this variable, used in Fl_Gl_Window.cxx, is only to force this file to be loaded |
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// whenever Fl_Gl_Window.cxx is loaded, that is, whenever fltk_gl is. |
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FL_EXPORT int fl_gl_load_plugin = 0;
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