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/*
* tk3d.h --
*
* Declarations of types and functions shared by the 3d border module.
*
* Copyright © 1996-1997 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
#ifndef _TK3D
#define _TK3D
#include "tkInt.h"
/*
* One of the following data structures is allocated for each 3-D border
* currently in use. Structures of this type are indexed by borderTable, so
* that a single structure can be shared for several uses.
*/
typedef struct TkBorder {
Screen *screen; /* Screen on which the border will be used. */
Visual *visual; /* Visual for all windows and pixmaps using
* the border. */
int depth; /* Number of bits per pixel of drawables where
* the border will be used. */
Colormap colormap; /* Colormap out of which pixels are
* allocated. */
Tcl_Size resourceRefCount; /* Number of active uses of this color (each
* active use corresponds to a call to
* Tk_Alloc3DBorderFromObj or Tk_Get3DBorder).
* If this count is 0, then this structure is
* no longer valid and it isn't present in
* borderTable: it is being kept around only
* because there are objects referring to it.
* The structure is freed when objRefCount and
* resourceRefCount are both 0. */
Tcl_Size objRefCount; /* The number of Tcl objects that reference
* this structure. */
XColor *bgColorPtr; /* Background color (intensity between
* lightColorPtr and darkColorPtr). */
XColor *darkColorPtr; /* Color for darker areas (must free when
* deleting structure). NULL means shadows
* haven't been allocated yet.*/
XColor *lightColorPtr; /* Color used for lighter areas of border
* (must free this when deleting structure).
* NULL means shadows haven't been allocated
* yet. */
Pixmap shadow; /* Stipple pattern to use for drawing shadows
* areas. Used for displays with <= 64 colors
* or where colormap has filled up. */
GC bgGC; /* Used (if necessary) to draw areas in the
* background color. */
GC darkGC; /* Used to draw darker parts of the border.
* NULL means the shadow colors haven't been
* allocated yet.*/
GC lightGC; /* Used to draw lighter parts of the border.
* NULL means the shadow colors haven't been
* allocated yet. */
Tcl_HashEntry *hashPtr; /* Entry in borderTable (needed in order to
* delete structure). */
struct TkBorder *nextPtr; /* Points to the next TkBorder structure with
* the same color name. Borders with the same
* name but different screens or colormaps are
* chained together off a single entry in
* borderTable. */
} TkBorder;
/*
* Maximum intensity for a color:
*/
#define MAX_INTENSITY 65535
/*
* Declarations for platform specific interfaces used by this module.
*/
MODULE_SCOPE TkBorder *TkpGetBorder(void);
MODULE_SCOPE void TkpGetShadows(TkBorder *borderPtr, Tk_Window tkwin);
MODULE_SCOPE void TkpFreeBorder(TkBorder *borderPtr);
#endif /* _TK3D */
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