--- /dev/null
+/*
+ * tk3d.h --
+ *
+ * Declarations of types and functions shared by the 3d border module.
+ *
+ * Copyright (c) 1996-1997 by 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. */
+ int 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+ * no longer valid and it isn't present in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. */
+ int 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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