85 lines
3 KiB
C
85 lines
3 KiB
C
/*
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* tk3d.h --
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*
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* Declarations of types and functions shared by the 3d border module.
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*
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* Copyright (c) 1996-1997 by Sun Microsystems, Inc.
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*
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* See the file "license.terms" for information on usage and redistribution of
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* this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*/
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#ifndef _TK3D
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#define _TK3D
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#include "tkInt.h"
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/*
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* One of the following data structures is allocated for each 3-D border
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* currently in use. Structures of this type are indexed by borderTable, so
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* that a single structure can be shared for several uses.
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*/
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typedef struct TkBorder {
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Screen *screen; /* Screen on which the border will be used. */
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Visual *visual; /* Visual for all windows and pixmaps using
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* the border. */
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int depth; /* Number of bits per pixel of drawables where
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* the border will be used. */
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Colormap colormap; /* Colormap out of which pixels are
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* allocated. */
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int resourceRefCount; /* Number of active uses of this color (each
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* active use corresponds to a call to
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* Tk_Alloc3DBorderFromObj or Tk_Get3DBorder).
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* If this count is 0, then this structure is
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* no longer valid and it isn't present in
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* borderTable: it is being kept around only
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* because there are objects referring to it.
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* The structure is freed when objRefCount and
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* resourceRefCount are both 0. */
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int objRefCount; /* The number of Tcl objects that reference
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* this structure. */
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XColor *bgColorPtr; /* Background color (intensity between
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* lightColorPtr and darkColorPtr). */
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XColor *darkColorPtr; /* Color for darker areas (must free when
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* deleting structure). NULL means shadows
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* haven't been allocated yet.*/
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XColor *lightColorPtr; /* Color used for lighter areas of border
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* (must free this when deleting structure).
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* NULL means shadows haven't been allocated
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* yet. */
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Pixmap shadow; /* Stipple pattern to use for drawing shadows
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* areas. Used for displays with <= 64 colors
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* or where colormap has filled up. */
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GC bgGC; /* Used (if necessary) to draw areas in the
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* background color. */
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GC darkGC; /* Used to draw darker parts of the border.
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* None means the shadow colors haven't been
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* allocated yet.*/
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GC lightGC; /* Used to draw lighter parts of the border.
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* None means the shadow colors haven't been
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* allocated yet. */
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Tcl_HashEntry *hashPtr; /* Entry in borderTable (needed in order to
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* delete structure). */
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struct TkBorder *nextPtr; /* Points to the next TkBorder structure with
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* the same color name. Borders with the same
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* name but different screens or colormaps are
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* chained together off a single entry in
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* borderTable. */
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} TkBorder;
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/*
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* Maximum intensity for a color:
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*/
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#define MAX_INTENSITY 65535
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/*
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* Declarations for platform specific interfaces used by this module.
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*/
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MODULE_SCOPE TkBorder *TkpGetBorder(void);
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MODULE_SCOPE void TkpGetShadows(TkBorder *borderPtr, Tk_Window tkwin);
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MODULE_SCOPE void TkpFreeBorder(TkBorder *borderPtr);
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#endif /* _TK3D */
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