--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lwlib/xlwgcs.h	Mon Aug 13 11:13:30 2007 +0200
@@ -0,0 +1,144 @@
+ /* Tabs Widget for XEmacs.
+    Copyright (C) 1999 Edward A. Falk
+ 
+ This file is part of XEmacs.
+ 
+ XEmacs is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by the
+ Free Software Foundation; either version 2, or (at your option) any
+ later version.
+ 
+ XEmacs is distributed in the hope that it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ for more details.
+ 
+ You should have received a copy of the GNU General Public License
+ along with XEmacs; see the file COPYING.  If not, write to
+ the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.  */
+ 
+ /* Synched up with: Gcs 1.7 */
+ 
+
+#ifndef	GCS_H
+#define	GCS_H
+
+/* Overview of functions provided here:
+ *
+ * AllocFgGC()
+ *	Given a foreground pixel & a font, return an appropriate GC
+ *
+ * AllocBackgroundGC()
+ *	Given a widget, return a GC for painting the background color
+ *
+ * AllocShadeGC()
+ *	Given foreground, background, a contrast value & be_nice_to_colormap
+ *	flag, return a GC suitable for rendering in an intermediate color,
+ *	as determined by constrast.  May return a dither pattern or a
+ *	solid color, as appropriate.
+ *
+ *	Contrast 0 = background color, 100 = foreground color.  It is legal
+ *	for contrast to be more than 100 or less than 0.
+ *
+ * AllocGreyGC()
+ *	Given widget, foreground, font, contrast & be_nice_to_colormap,
+ *	return a shade GC (see above) based on foreground and widget
+ *	background.
+ *
+ * AllocTopShadowGC()
+ *	Given widget, contrast & be_nice_to_colormap, return a GC suitable
+ *	for rendering the top shadow.
+ *
+ *	Contrast 0 = use background pixel.  Contrast > 0 = use brighter
+ *	colors.
+ *
+ * AllocBotShadowGC()
+ *	Given widget, contrast & be_nice_to_colormap, return a GC suitable
+ *	for rendering the bottom shadow.
+ *
+ *	Contrast 0 = use background pixel.  Contrast > 0 = use darker
+ *	colors.
+ *
+ * AllocArmShadowGC()
+ *	Given widget, contrast & be_nice_to_colormap, return a GC suitable
+ *	for rendering the "armed" shadow.
+ *
+ *	Contrast 0 = use background pixel.  Contrast > 0 = use darker
+ *	colors.
+ *
+ * AllocShadowPixel()
+ *	Given a widget & scale factor, allocate & return a color darker
+ *	or lighter than the background pixel, as determined by scale.
+ *
+ *	Scale 100 = use background pixel.  Scale > 100 = brighter color,
+ *	Scale < 100 = darker color.
+ *
+ * AllocGreyPixel()
+ *	Given two pixel values and scale factor, allocate & return a
+ *	pixel value between them, according to scale.
+ *
+ *	Scale == 0:	background color
+ *	Scale == 100:	foreground color
+ *	0<Scale<100:	intermediate color
+ *	Scale > 100:	more foreground
+ *	Scale < 0:	more background
+ *
+ *
+ * AllocGreyPixelC()
+ *	Given two color values and scale factor, allocate & return a
+ *	pixel value between them, according to scale.
+ *
+ *	Scale == 0:	background color
+ *	Scale == 100:	foreground color
+ *	0<Scale<100:	intermediate color
+ *	Scale > 100:	more foreground
+ *	Scale < 0:	more background
+ *
+ * Draw3dBox()
+ *	Given box dimensions, shadow width, top shadow GC & bottom shadow GC,
+ *	draw a 3-d box.
+ */
+
+#if	NeedFunctionPrototypes
+
+extern	GC	AllocFgGC( Widget w, Pixel fg, Font font) ;
+extern	GC	AllocBackgroundGC( Widget w, Font font) ;
+extern	GC	AllocShadeGC( Widget w, Pixel fg, Pixel bg, Font,
+			int contrast, Bool ) ;
+extern	GC	AllocGreyGC( Widget w, Pixel fg, Font, int, Bool ) ;
+extern	GC	AllocTopShadowGC( Widget w, int contrast, int ) ;
+extern	GC	AllocBotShadowGC( Widget w, int contrast, int ) ;
+extern	GC	AllocArmGC( Widget w, int contrast, int) ;
+extern	Pixel	AllocShadowPixel(Widget, int scale) ;
+extern	Pixel	AllocGreyPixel(Widget, Pixel fg, Pixel bg, int scale) ;
+extern	Pixel	AllocGreyPixelC(Widget, XColor *fg, XColor *bg, int scale) ;
+extern	void	Draw3dBox(Widget w, int  x, int y, int wid, int hgt, int s,
+			GC topgc, GC botgc) ;
+
+#if XtSpecificationRelease < 5
+extern	GC	XtAllocateGC(Widget, int depth, u_long mask,
+			XGCValues *, u_long dynamic, u_long dontcare) ;
+#endif
+
+#else
+
+extern	GC	AllocFgGC() ;
+extern	GC	AllocBackgroundGC() ;
+extern	GC	AllocShadeGC() ;
+extern	GC	AllocGreyGC() ;
+extern	GC	AllocTopShadowGC() ;
+extern	GC	AllocBotShadowGC() ;
+extern	GC	AllocArmGC() ;
+extern	Pixel	AllocShadowPixel() ;
+extern	Pixel	AllocGreyPixel() ;
+extern	Pixel	AllocGreyPixelC() ;
+extern	void	Draw3dBox() ;
+
+#if XtSpecificationRelease < 5
+extern	GC	XtAllocateGC() ;
+#endif
+
+#endif
+
+#endif	/* GCS_H */