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/* 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 contrast. 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, unsigned long mask,
XGCValues *,
unsigned long dynamic, unsigned 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 */
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