Initial revision

git-svn-id: file:///fltk/svn/fltk/trunk@2 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 87 insertions, 0 deletions

diff --git a/FL/x.H b/FL/x.H
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+// x.H
+
+// These are internal fltk symbols that are necessary or useful for
+// calling Xlib.  You should include this file if (and ONLY if) you
+// need to call Xlib directly.  These symbols may not exist on non-X
+// systems.
+
+#ifndef Fl_X_H
+#define Fl_X_H
+
+#include "Enumerations.H"
+
+#ifdef WIN32
+
+#include "win32.H"
+
+#else
+
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/Xatom.h>
+#include "Fl_Window.H"
+
+void fl_open_display();
+void fl_close_display();
+
+// constant info about the X server connection:
+extern Display *fl_display;
+extern int fl_screen;
+extern XVisualInfo *fl_visual;
+extern Colormap fl_colormap;
+
+// drawing functions:
+extern GC fl_gc;
+extern Window fl_window;
+ulong fl_xpixel(Fl_Color i);
+ulong fl_xpixel(uchar r, uchar g, uchar b);
+void fl_clip_region(Region);
+
+// feed events into fltk:
+int fl_handle(const XEvent&);
+
+// you can use these in Fl::add_handler() to look at events:
+extern const XEvent* fl_xevent;
+extern ulong fl_event_time;
+
+// off-screen pixmaps: create, destroy, draw into, copy to window:
+#define Fl_Offscreen ulong
+#define fl_create_offscreen(w,h) \
+XCreatePixmap(fl_display, fl_window, w, h, fl_visual->depth)
+#define fl_begin_offscreen(pixmap) Window _sw=fl_window;fl_window=pixmap;fl_push_no_clip()
+#define fl_end_offscreen() fl_pop_clip();fl_window = _sw
+#define fl_copy_offscreen(x,y,w,h,pixmap,srcx,srcy) \
+  XCopyArea(fl_display, pixmap, fl_window, fl_gc, srcx, srcy, w, h, x, y)
+#define fl_delete_offscreen(pixmap) XFreePixmap(fl_display, pixmap)
+
+// this object contains all X-specific stuff about a window:
+// Warning: this object is highly subject to change!  It's definition
+// is only here so that fl_xid can be declared inline:
+class Fl_X {
+public:
+  Window xid;
+  Window other_xid;
+  Fl_Window *w;
+  Region region;
+  Fl_X *next;
+  static Fl_X* first;
+  static Fl_X* i(const Fl_Window* w) {return w->i;}
+  void setwindow(Fl_Window* wi) {w=wi; wi->i=this;}
+  void sendxjunk();
+  static void make_xid(Fl_Window*,XVisualInfo* =fl_visual, Colormap=fl_colormap);
+  static Fl_X* set_xid(Fl_Window*, Window);
+  // kludges to get around protection:
+  void flush() {w->flush();}
+  static void x(Fl_Window* w, int X) {w->x(X);}
+  static void y(Fl_Window* w, int Y) {w->y(Y);}
+};
+
+// convert xid <-> Fl_Window:
+inline Window fl_xid(const Fl_Window*w) {return Fl_X::i(w)->xid;}
+Fl_Window* fl_find(Window xid);
+
+extern char fl_override_redirect; // hack into Fl_X::make_xid()
+extern int fl_background_pixel;  // hack into Fl_X::make_xid()
+
+#endif
+#endif