44c874b731
FL_OVERRIDE is defined as `override` for C++11 and higher FL_OVERRIDE is defined as `override` for VisualC 2015 and newer Don't interfere with Fl_Widget::override()
53 lines
1.7 KiB
C++
53 lines
1.7 KiB
C++
//
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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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