/[dtapublic]/projs/trunk/shared_source/c_tk_base_7_5_w_mods/tkcolor.h
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Revision 69 - (hide annotations) (download)
Sat Nov 5 10:54:17 2016 UTC (6 years, 4 months ago) by dashley
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1 dashley 69 /* $Header$ */
2 dashley 25
3     /*
4     * tkColor.h --
5     *
6     * Declarations of data types and functions used by the
7     * Tk color module.
8     *
9     * Copyright (c) 1996-1997 by Sun Microsystems, Inc.
10     *
11     * See the file "license.terms" for information on usage and redistribution
12     * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13     *
14     * RCS: @(#) $Id: tkcolor.h,v 1.1.1.1 2001/06/13 04:58:33 dtashley Exp $
15     */
16    
17     #ifndef _TKCOLOR
18     #define _TKCOLOR
19    
20     #include "tkInt.h"
21    
22     #ifdef BUILD_tk
23     # undef TCL_STORAGE_CLASS
24     # define TCL_STORAGE_CLASS DLLEXPORT
25     #endif
26    
27     /*
28     * One of the following data structures is used to keep track of
29     * each color that is being used by the application; typically there
30     * is a colormap entry allocated for each of these colors.
31     */
32    
33     #define TK_COLOR_BY_NAME 1
34     #define TK_COLOR_BY_VALUE 2
35    
36     #define COLOR_MAGIC ((unsigned int) 0x46140277)
37    
38     typedef struct TkColor {
39     XColor color; /* Information about this color. */
40     unsigned int magic; /* Used for quick integrity check on this
41     * structure. Must always have the
42     * value COLOR_MAGIC. */
43     GC gc; /* Simple gc with this color as foreground
44     * color and all other fields defaulted.
45     * May be None. */
46     Screen *screen; /* Screen where this color is valid. Used
47     * to delete it, and to find its display. */
48     Colormap colormap; /* Colormap from which this entry was
49     * allocated. */
50     Visual *visual; /* Visual associated with colormap. */
51     int resourceRefCount; /* Number of active uses of this color (each
52     * active use corresponds to a call to
53     * Tk_AllocColorFromObj or Tk_GetColor).
54     * If this count is 0, then this TkColor
55     * structure is no longer valid and it isn't
56     * present in a hash table: it is being
57     * kept around only because there are objects
58     * referring to it. The structure is freed
59     * when resourceRefCount and objRefCount
60     * are both 0. */
61     int objRefCount; /* The number of Tcl objects that reference
62     * this structure. */
63     int type; /* TK_COLOR_BY_NAME or TK_COLOR_BY_VALUE */
64     Tcl_HashEntry *hashPtr; /* Pointer to hash table entry for this
65     * structure. (for use in deleting entry). */
66     struct TkColor *nextPtr; /* Points to the next TkColor structure with
67     * the same color name. Colors with the
68     * same name but different screens or
69     * colormaps are chained together off a
70     * single entry in nameTable. For colors in
71     * valueTable (those allocated by
72     * Tk_GetColorByValue) this field is always
73     * NULL. */
74     } TkColor;
75    
76     /*
77     * Common APIs exported from all platform-specific implementations.
78     */
79    
80     #ifndef TkpFreeColor
81     extern void TkpFreeColor _ANSI_ARGS_((TkColor *tkColPtr));
82     #endif
83     extern TkColor * TkpGetColor _ANSI_ARGS_((Tk_Window tkwin,
84     Tk_Uid name));
85     extern TkColor * TkpGetColorByValue _ANSI_ARGS_((Tk_Window tkwin,
86     XColor *colorPtr));
87    
88     # undef TCL_STORAGE_CLASS
89     # define TCL_STORAGE_CLASS DLLIMPORT
90    
91     #endif /* _TKCOLOR */
92    
93 dashley 69 /* End of tkcolor.h */

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