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+//
+// "$Id$"
+//
+// Platform header file for the Fast Light Tool Kit (FLTK).
+//
+// Copyright 1998-2018 by Bill Spitzak and others.
+//
+// This library is free software. Distribution and use rights are outlined in
+// the file "COPYING" which should have been included with this file.  If this
+// file is missing or damaged, see the license at:
+//
+//     http://www.fltk.org/COPYING.php
+//
+// Please report all bugs and problems on the following page:
+//
+//     http://www.fltk.org/str.php
+//
+
+// These are FLTK symbols that are necessary or useful for calling
+// platform specific functions. This file #include's certain platform
+// specific system header files that are necessary to declare platform
+// specific FLTK functions, for instance "Windows.h" under Windows.
+
+// You should include this file if (and ONLY if) you need to call
+// platform specific functions directly.
+
+// See FLTK documentation: chapter "Operating System Issues" on when
+// you need to #include <FL/platform.H>
+
+#if !defined(FL_PLATFORM_H) && !defined(FL_DOXYGEN)
+#  define FL_PLATFORM_H
+
+#   include <FL/Fl_Export.H>
+#   include <FL/platform_types.h>
+#   include <FL/fl_types.h> // for uchar
+class Fl_Window;
+
+#  ifdef WIN32
+#    include "win32.H"
+#  elif defined(__APPLE__)
+#    include "mac.H"
+#  elif defined(USE_SDL)
+#    pragma message "FL_PORTING: write a header file based on this file, win32.H, or mac.H to define the FLTK core internals"
+#    include "porting.H"
+#  elif defined(FL_PORTING)
+#    pragma message "FL_PORTING: write a header file based on this file, win32.H, or mac.H to define the FLTK core internals"
+#    include "porting.H"
+#  else // X11
+#   include <FL/fl_types.h>
+#   include <FL/Enumerations.H>
+#    if !defined(USE_X11)
+#      define USE_X11 1
+#    endif
+#    if defined(_ABIN32) || defined(_ABI64) // fix for broken SGI Irix X .h files
+#      pragma set woff 3322
+#    endif
+#    include <X11/Xlib.h>
+#    include <X11/Xutil.h>
+#    if defined(_ABIN32) || defined(_ABI64)
+#      pragma reset woff 3322
+#    endif
+#    include <X11/Xatom.h>
+
+FL_EXPORT void fl_open_display(Display*);
+
+// constant info about the X server connection:
+extern FL_EXPORT Display *fl_display;
+extern FL_EXPORT int fl_screen;
+extern FL_EXPORT XVisualInfo *fl_visual;
+extern FL_EXPORT Colormap fl_colormap;
+
+// drawing functions:
+extern FL_EXPORT GC fl_gc;
+FL_EXPORT ulong fl_xpixel(Fl_Color i);
+FL_EXPORT ulong fl_xpixel(uchar r, uchar g, uchar b);
+
+// feed events into fltk:
+FL_EXPORT int fl_handle(const XEvent&);
+
+// you can use these in Fl::add_handler() to look at events:
+extern FL_EXPORT const XEvent* fl_xevent;
+extern FL_EXPORT ulong fl_event_time;
+
+#if defined(FL_LIBRARY) || defined(FL_INTERNALS)
+extern FL_EXPORT Window fl_message_window;
+extern FL_EXPORT void *fl_xftfont;
+
+// access to core fonts:
+// This class provides a "smart pointer" that returns a pointer to an XFontStruct.
+// The global variable fl_xfont can be called wherever a bitmap "core" font is
+// needed, e.g. when rendering to a GL context under X11.
+// With Xlib / X11 fonts, fl_xfont will return the current selected font.
+// With XFT / X11 fonts, fl_xfont will attempt to return the bitmap "core" font most
+// similar to (usually the same as) the current XFT font.
+class FL_EXPORT Fl_XFont_On_Demand
+{
+public:
+  Fl_XFont_On_Demand(XFontStruct* p = NULL) : ptr(p) { }
+  Fl_XFont_On_Demand& operator=(const Fl_XFont_On_Demand& x)
+  { ptr = x.ptr;  return *this; }
+  Fl_XFont_On_Demand& operator=(XFontStruct* p)
+  { ptr = p;  return *this; }
+  XFontStruct* value();
+  operator XFontStruct*() { return value(); }
+  XFontStruct& operator*() { return *value(); }
+  XFontStruct* operator->() { return value(); }
+  bool operator==(const Fl_XFont_On_Demand& x) { return ptr == x.ptr; }
+  bool operator!=(const Fl_XFont_On_Demand& x) { return ptr != x.ptr; }
+private:
+  XFontStruct *ptr;
+};
+extern FL_EXPORT Fl_XFont_On_Demand fl_xfont;
+
+extern FL_EXPORT char fl_override_redirect; // hack into Fl_X::make_xid()
+extern FL_EXPORT int fl_background_pixel;  // hack into Fl_X::make_xid()
+
+#endif // FL_LIBRARY || FL_INTERNALS
+
+#  endif // X11
+
+//
+// cross-platform declarations
+//
+#if defined(FL_LIBRARY) || defined(FL_INTERNALS)
+#  include <FL/Fl_Window.H>
+
+class FL_EXPORT Fl_X {
+public:
+  Window xid;
+  Fl_Window* w;
+  Fl_Region region;
+  Fl_X *next;
+  // static variables, static functions and member functions
+  static Fl_X* first;
+  static Fl_X* i(const Fl_Window* w) {return (Fl_X*)w->i;}
+#  if defined(USE_X11) // for backward compatibility
+  static void make_xid(Fl_Window*, XVisualInfo* =fl_visual, Colormap=fl_colormap);
+  static Fl_X* set_xid(Fl_Window*, Window);
+#  endif
+};
+
+inline Window fl_xid(const Fl_Window* w) { Fl_X *xTemp = Fl_X::i(w); return xTemp ? xTemp->xid : 0; }
+#else
+extern FL_EXPORT Window fl_xid_(const Fl_Window* w);
+#  define fl_xid(w) fl_xid_(w)
+#endif // FL_LIBRARY || FL_INTERNALS
+
+extern FL_EXPORT Fl_Window* fl_find(Window xid);
+extern FL_EXPORT void fl_open_display();
+extern FL_EXPORT void fl_close_display();
+extern FL_EXPORT Window fl_window;
+extern FL_EXPORT Fl_Bitmask fl_create_bitmask(int w, int h, const uchar *data);
+extern FL_EXPORT Fl_Bitmask fl_create_alphamask(int w, int h, int d, int ld, const uchar *data);
+extern FL_EXPORT void fl_delete_bitmask(Fl_Bitmask bm);
+extern FL_EXPORT int fl_parse_color(const char* p, uchar& r, uchar& g, uchar& b);
+extern FL_EXPORT void fl_open_callback(void (*)(const char *));
+
+#endif // !FL_PLATFORM_H
+
+//
+// End of "$Id$".
+//