diff options
Diffstat (limited to 'generic/tkColor.h')
| -rw-r--r-- | generic/tkColor.h | 29 |
1 files changed, 24 insertions, 5 deletions
diff --git a/generic/tkColor.h b/generic/tkColor.h index 9653243..1ab252e 100644 --- a/generic/tkColor.h +++ b/generic/tkColor.h @@ -4,12 +4,12 @@ * Declarations of data types and functions used by the * Tk color module. * - * Copyright (c) 1996 by Sun Microsystems, Inc. + * 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. * - * SCCS: @(#) tkColor.h 1.1 96/10/22 16:53:09 + * SCCS: @(#) tkColor.h 1.6 97/12/24 15:52:05 */ #ifndef _TKCOLOR @@ -19,8 +19,8 @@ /* * One of the following data structures is used to keep track of - * each color that the color module has allocated from the X display - * server. + * each color that is being used by the application; typically there + * is a colormap entry allocated for each of these colors. */ #define COLOR_MAGIC ((unsigned int) 0x46140277) @@ -38,11 +38,30 @@ typedef struct TkColor { Colormap colormap; /* Colormap from which this entry was * allocated. */ Visual *visual; /* Visual associated with colormap. */ - int refCount; /* Number of uses of this structure. */ + int resourceRefCount; /* Number of active uses of this color (each + * active use corresponds to a call to + * Tk_AllocColorFromObj or Tk_GetColor). + * If this count is 0, then this TkColor + * structure is no longer valid and it isn't + * present in a hash table: it is being + * kept around only because there are objects + * referring to it. The structure is freed + * when resourceRefCount and objRefCount + * are both 0. */ + int objRefCount; /* The number of Tcl objects that reference + * this structure. */ Tcl_HashTable *tablePtr; /* Hash table that indexes this structure * (needed when deleting structure). */ Tcl_HashEntry *hashPtr; /* Pointer to hash table entry for this * structure. (for use in deleting entry). */ + struct TkColor *nextPtr; /* Points to the next TkColor structure with + * the same color name. Colors with the + * same name but different screens or + * colormaps are chained together off a + * single entry in nameTable. For colors in + * valueTable (those allocated by + * Tk_GetColorByValue) this field is always + * NULL. */ } TkColor; /* |