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/* $Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/tk_base/tkwincolor.c,v 1.1.1.1 2001/06/13 05:12:03 dtashley Exp $ */
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| 2 |
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/*
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* tkWinColor.c --
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*
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* Functions to map color names to system color values.
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*
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* Copyright (c) 1995 Sun Microsystems, Inc.
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* Copyright (c) 1994 Software Research Associates, Inc.
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*
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* See the file "license.terms" for information on usage and redistribution
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*
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* RCS: @(#) $Id: tkwincolor.c,v 1.1.1.1 2001/06/13 05:12:03 dtashley Exp $
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*/
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#include "tkWinInt.h"
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#include "tkColor.h"
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/*
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* The following structure is used to keep track of each color that is
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* allocated by this module.
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*/
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typedef struct WinColor {
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TkColor info; /* Generic color information. */
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int index; /* Index for GetSysColor(), -1 if color
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* is not a "live" system color. */
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} WinColor;
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/*
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* The sysColors array contains the names and index values for the
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* Windows indirect system color names. In use, all of the names
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* will have the string "System" prepended, but we omit it in the table
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* to save space.
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*/
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typedef struct {
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char *name;
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int index;
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} SystemColorEntry;
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static SystemColorEntry sysColors[] = {
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"3dDarkShadow", COLOR_3DDKSHADOW,
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"3dLight", COLOR_3DLIGHT,
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"ActiveBorder", COLOR_ACTIVEBORDER,
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"ActiveCaption", COLOR_ACTIVECAPTION,
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"AppWorkspace", COLOR_APPWORKSPACE,
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"Background", COLOR_BACKGROUND,
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"ButtonFace", COLOR_BTNFACE,
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"ButtonHighlight", COLOR_BTNHIGHLIGHT,
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"ButtonShadow", COLOR_BTNSHADOW,
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"ButtonText", COLOR_BTNTEXT,
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"CaptionText", COLOR_CAPTIONTEXT,
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"DisabledText", COLOR_GRAYTEXT,
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"GrayText", COLOR_GRAYTEXT,
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"Highlight", COLOR_HIGHLIGHT,
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"HighlightText", COLOR_HIGHLIGHTTEXT,
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"InactiveBorder", COLOR_INACTIVEBORDER,
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"InactiveCaption", COLOR_INACTIVECAPTION,
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"InactiveCaptionText", COLOR_INACTIVECAPTIONTEXT,
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"InfoBackground", COLOR_INFOBK,
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"InfoText", COLOR_INFOTEXT,
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"Menu", COLOR_MENU,
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"MenuText", COLOR_MENUTEXT,
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"Scrollbar", COLOR_SCROLLBAR,
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"Window", COLOR_WINDOW,
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"WindowFrame", COLOR_WINDOWFRAME,
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"WindowText", COLOR_WINDOWTEXT,
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NULL, 0
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};
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typedef struct ThreadSpecificData {
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int ncolors;
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} ThreadSpecificData;
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static Tcl_ThreadDataKey dataKey;
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/*
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* Forward declarations for functions defined later in this file.
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*/
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static int FindSystemColor _ANSI_ARGS_((const char *name,
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XColor *colorPtr, int *indexPtr));
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static int GetColorByName _ANSI_ARGS_((char *name, XColor *color));
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static int GetColorByValue _ANSI_ARGS_((char *value, XColor *color));
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/*
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*----------------------------------------------------------------------
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*
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* FindSystemColor --
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*
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* This routine finds the color entry that corresponds to the
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* specified color.
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*
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* Results:
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* Returns non-zero on success. The RGB values of the XColor
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* will be initialized to the proper values on success.
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*
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* Side effects:
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* None.
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*
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*----------------------------------------------------------------------
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*/
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static int
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FindSystemColor(name, colorPtr, indexPtr)
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const char *name; /* Color name. */
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XColor *colorPtr; /* Where to store results. */
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int *indexPtr; /* Out parameter to store color index. */
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{
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int l, u, r, i;
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ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
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Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
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/*
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* Count the number of elements in the color array if we haven't
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* done so yet.
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*/
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if (tsdPtr->ncolors == 0) {
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SystemColorEntry *ePtr;
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int version;
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version = LOBYTE(LOWORD(GetVersion()));
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for (ePtr = sysColors; ePtr->name != NULL; ePtr++) {
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if (version < 4) {
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if (ePtr->index == COLOR_3DDKSHADOW) {
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ePtr->index = COLOR_BTNSHADOW;
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} else if (ePtr->index == COLOR_3DLIGHT) {
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ePtr->index = COLOR_BTNHIGHLIGHT;
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}
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}
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tsdPtr->ncolors++;
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}
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}
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/*
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* Perform a binary search on the sorted array of colors.
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*/
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l = 0;
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u = tsdPtr->ncolors - 1;
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while (l <= u) {
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i = (l + u) / 2;
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r = strcasecmp(name, sysColors[i].name);
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if (r == 0) {
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break;
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} else if (r < 0) {
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u = i-1;
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} else {
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l = i+1;
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}
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}
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if (l > u) {
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return 0;
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}
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*indexPtr = sysColors[i].index;
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colorPtr->pixel = GetSysColor(sysColors[i].index);
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/*
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* x257 is (value<<8 + value) to get the properly bit shifted
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* and padded value. [Bug: 4919]
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*/
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colorPtr->red = GetRValue(colorPtr->pixel) * 257;
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colorPtr->green = GetGValue(colorPtr->pixel) * 257;
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colorPtr->blue = GetBValue(colorPtr->pixel) * 257;
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colorPtr->flags = DoRed|DoGreen|DoBlue;
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colorPtr->pad = 0;
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return 1;
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}
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/*
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*----------------------------------------------------------------------
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*
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* TkpGetColor --
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*
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* Allocate a new TkColor for the color with the given name.
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*
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* Results:
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* Returns a newly allocated TkColor, or NULL on failure.
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*
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* Side effects:
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* May invalidate the colormap cache associated with tkwin upon
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* allocating a new colormap entry. Allocates a new TkColor
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* structure.
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*
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*----------------------------------------------------------------------
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*/
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TkColor *
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TkpGetColor(tkwin, name)
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Tk_Window tkwin; /* Window in which color will be used. */
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Tk_Uid name; /* Name of color to allocated (in form
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* suitable for passing to XParseColor). */
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{
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WinColor *winColPtr;
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XColor color;
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int index = -1; /* -1 indicates that this is not an indirect
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* sytem color. */
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/*
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* Check to see if it is a system color or an X color string. If the
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* color is found, allocate a new WinColor and store the XColor and the
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* system color index.
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*/
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if (((strncasecmp(name, "system", 6) == 0)
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&& FindSystemColor(name+6, &color, &index))
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|| XParseColor(Tk_Display(tkwin), Tk_Colormap(tkwin), name,
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&color)) {
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winColPtr = (WinColor *) ckalloc(sizeof(WinColor));
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winColPtr->info.color = color;
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winColPtr->index = index;
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XAllocColor(Tk_Display(tkwin), Tk_Colormap(tkwin),
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&winColPtr->info.color);
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return (TkColor *) winColPtr;
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}
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return (TkColor *) NULL;
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}
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/*
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*----------------------------------------------------------------------
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*
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* TkpGetColorByValue --
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*
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* Given a desired set of red-green-blue intensities for a color,
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* locate a pixel value to use to draw that color in a given
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* window.
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*
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* Results:
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* The return value is a pointer to an TkColor structure that
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* indicates the closest red, blue, and green intensities available
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* to those specified in colorPtr, and also specifies a pixel
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* value to use to draw in that color.
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*
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* Side effects:
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* May invalidate the colormap cache for the specified window.
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* Allocates a new TkColor structure.
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*
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*----------------------------------------------------------------------
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*/
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TkColor *
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TkpGetColorByValue(tkwin, colorPtr)
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Tk_Window tkwin; /* Window in which color will be used. */
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XColor *colorPtr; /* Red, green, and blue fields indicate
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* desired color. */
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{
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WinColor *tkColPtr = (WinColor *) ckalloc(sizeof(WinColor));
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tkColPtr->info.color.red = colorPtr->red;
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tkColPtr->info.color.green = colorPtr->green;
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tkColPtr->info.color.blue = colorPtr->blue;
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tkColPtr->info.color.pixel = 0;
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tkColPtr->index = -1;
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XAllocColor(Tk_Display(tkwin), Tk_Colormap(tkwin), &tkColPtr->info.color);
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return (TkColor *) tkColPtr;
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}
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/*
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*----------------------------------------------------------------------
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*
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* TkpFreeColor --
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*
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* Release the specified color back to the system.
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*
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* Results:
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* None
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*
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* Side effects:
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* Invalidates the colormap cache for the colormap associated with
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* the given color.
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*
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*----------------------------------------------------------------------
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*/
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void
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TkpFreeColor(tkColPtr)
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TkColor *tkColPtr; /* Color to be released. Must have been
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* allocated by TkpGetColor or
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* TkpGetColorByValue. */
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{
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Screen *screen = tkColPtr->screen;
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XFreeColors(DisplayOfScreen(screen), tkColPtr->colormap,
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&tkColPtr->color.pixel, 1, 0L);
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}
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| 290 |
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| 291 |
/*
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*----------------------------------------------------------------------
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*
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* TkWinIndexOfColor --
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| 295 |
*
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* Given a color, return the system color index that was used
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| 297 |
* to create the color.
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*
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| 299 |
* Results:
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| 300 |
* If the color was allocated using a system indirect color name,
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* then the corresponding GetSysColor() index is returned.
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* Otherwise, -1 is returned.
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*
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| 304 |
* Side effects:
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* None.
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*
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*----------------------------------------------------------------------
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*/
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| 310 |
int
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TkWinIndexOfColor(colorPtr)
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XColor *colorPtr;
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{
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| 314 |
register WinColor *winColPtr = (WinColor *) colorPtr;
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if (winColPtr->info.magic == COLOR_MAGIC) {
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| 316 |
return winColPtr->index;
|
| 317 |
}
|
| 318 |
return -1;
|
| 319 |
}
|
| 320 |
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| 321 |
/*
|
| 322 |
*----------------------------------------------------------------------
|
| 323 |
*
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| 324 |
* XAllocColor --
|
| 325 |
*
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| 326 |
* Find the closest available color to the specified XColor.
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| 327 |
*
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| 328 |
* Results:
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| 329 |
* Updates the color argument and returns 1 on success. Otherwise
|
| 330 |
* returns 0.
|
| 331 |
*
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| 332 |
* Side effects:
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| 333 |
* Allocates a new color in the palette.
|
| 334 |
*
|
| 335 |
*----------------------------------------------------------------------
|
| 336 |
*/
|
| 337 |
|
| 338 |
int
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| 339 |
XAllocColor(display, colormap, color)
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| 340 |
Display* display;
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| 341 |
Colormap colormap;
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| 342 |
XColor* color;
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| 343 |
{
|
| 344 |
TkWinColormap *cmap = (TkWinColormap *) colormap;
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| 345 |
PALETTEENTRY entry, closeEntry;
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| 346 |
HDC dc = GetDC(NULL);
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| 347 |
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| 348 |
entry.peRed = (color->red) >> 8;
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| 349 |
entry.peGreen = (color->green) >> 8;
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| 350 |
entry.peBlue = (color->blue) >> 8;
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| 351 |
entry.peFlags = 0;
|
| 352 |
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| 353 |
if (GetDeviceCaps(dc, RASTERCAPS) & RC_PALETTE) {
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| 354 |
unsigned long sizePalette = GetDeviceCaps(dc, SIZEPALETTE);
|
| 355 |
UINT newPixel, closePixel;
|
| 356 |
int new, refCount;
|
| 357 |
Tcl_HashEntry *entryPtr;
|
| 358 |
UINT index;
|
| 359 |
|
| 360 |
/*
|
| 361 |
* Find the nearest existing palette entry.
|
| 362 |
*/
|
| 363 |
|
| 364 |
newPixel = RGB(entry.peRed, entry.peGreen, entry.peBlue);
|
| 365 |
index = GetNearestPaletteIndex(cmap->palette, newPixel);
|
| 366 |
GetPaletteEntries(cmap->palette, index, 1, &closeEntry);
|
| 367 |
closePixel = RGB(closeEntry.peRed, closeEntry.peGreen,
|
| 368 |
closeEntry.peBlue);
|
| 369 |
|
| 370 |
/*
|
| 371 |
* If this is not a duplicate, allocate a new entry. Note that
|
| 372 |
* we may get values for index that are above the current size
|
| 373 |
* of the palette. This happens because we don't shrink the size of
|
| 374 |
* the palette object when we deallocate colors so there may be
|
| 375 |
* stale values that match in the upper slots. We should ignore
|
| 376 |
* those values and just put the new color in as if the colors
|
| 377 |
* had not matched.
|
| 378 |
*/
|
| 379 |
|
| 380 |
if ((index >= cmap->size) || (newPixel != closePixel)) {
|
| 381 |
if (cmap->size == sizePalette) {
|
| 382 |
color->red = closeEntry.peRed * 257;
|
| 383 |
color->green = closeEntry.peGreen * 257;
|
| 384 |
color->blue = closeEntry.peBlue * 257;
|
| 385 |
entry = closeEntry;
|
| 386 |
if (index >= cmap->size) {
|
| 387 |
OutputDebugString("XAllocColor: Colormap is bigger than we thought");
|
| 388 |
}
|
| 389 |
} else {
|
| 390 |
cmap->size++;
|
| 391 |
ResizePalette(cmap->palette, cmap->size);
|
| 392 |
SetPaletteEntries(cmap->palette, cmap->size - 1, 1, &entry);
|
| 393 |
}
|
| 394 |
}
|
| 395 |
|
| 396 |
color->pixel = PALETTERGB(entry.peRed, entry.peGreen, entry.peBlue);
|
| 397 |
entryPtr = Tcl_CreateHashEntry(&cmap->refCounts,
|
| 398 |
(char *) color->pixel, &new);
|
| 399 |
if (new) {
|
| 400 |
refCount = 1;
|
| 401 |
} else {
|
| 402 |
refCount = ((int) Tcl_GetHashValue(entryPtr)) + 1;
|
| 403 |
}
|
| 404 |
Tcl_SetHashValue(entryPtr, (ClientData)refCount);
|
| 405 |
} else {
|
| 406 |
|
| 407 |
/*
|
| 408 |
* Determine what color will actually be used on non-colormap systems.
|
| 409 |
*/
|
| 410 |
|
| 411 |
color->pixel = GetNearestColor(dc,
|
| 412 |
RGB(entry.peRed, entry.peGreen, entry.peBlue));
|
| 413 |
color->red = GetRValue(color->pixel) * 257;
|
| 414 |
color->green = GetGValue(color->pixel) * 257;
|
| 415 |
color->blue = GetBValue(color->pixel) * 257;
|
| 416 |
}
|
| 417 |
|
| 418 |
ReleaseDC(NULL, dc);
|
| 419 |
return 1;
|
| 420 |
}
|
| 421 |
|
| 422 |
/*
|
| 423 |
*----------------------------------------------------------------------
|
| 424 |
*
|
| 425 |
* XFreeColors --
|
| 426 |
*
|
| 427 |
* Deallocate a block of colors.
|
| 428 |
*
|
| 429 |
* Results:
|
| 430 |
* None.
|
| 431 |
*
|
| 432 |
* Side effects:
|
| 433 |
* Removes entries for the current palette and compacts the
|
| 434 |
* remaining set.
|
| 435 |
*
|
| 436 |
*----------------------------------------------------------------------
|
| 437 |
*/
|
| 438 |
|
| 439 |
void
|
| 440 |
XFreeColors(display, colormap, pixels, npixels, planes)
|
| 441 |
Display* display;
|
| 442 |
Colormap colormap;
|
| 443 |
unsigned long* pixels;
|
| 444 |
int npixels;
|
| 445 |
unsigned long planes;
|
| 446 |
{
|
| 447 |
TkWinColormap *cmap = (TkWinColormap *) colormap;
|
| 448 |
COLORREF cref;
|
| 449 |
UINT count, index, refCount;
|
| 450 |
int i;
|
| 451 |
PALETTEENTRY entry, *entries;
|
| 452 |
Tcl_HashEntry *entryPtr;
|
| 453 |
HDC dc = GetDC(NULL);
|
| 454 |
|
| 455 |
/*
|
| 456 |
* We don't have to do anything for non-palette devices.
|
| 457 |
*/
|
| 458 |
|
| 459 |
if (GetDeviceCaps(dc, RASTERCAPS) & RC_PALETTE) {
|
| 460 |
|
| 461 |
/*
|
| 462 |
* This is really slow for large values of npixels.
|
| 463 |
*/
|
| 464 |
|
| 465 |
for (i = 0; i < npixels; i++) {
|
| 466 |
entryPtr = Tcl_FindHashEntry(&cmap->refCounts,
|
| 467 |
(char *) pixels[i]);
|
| 468 |
if (!entryPtr) {
|
| 469 |
panic("Tried to free a color that isn't allocated.");
|
| 470 |
}
|
| 471 |
refCount = (int) Tcl_GetHashValue(entryPtr) - 1;
|
| 472 |
if (refCount == 0) {
|
| 473 |
cref = pixels[i] & 0x00ffffff;
|
| 474 |
index = GetNearestPaletteIndex(cmap->palette, cref);
|
| 475 |
GetPaletteEntries(cmap->palette, index, 1, &entry);
|
| 476 |
if (cref == RGB(entry.peRed, entry.peGreen, entry.peBlue)) {
|
| 477 |
count = cmap->size - index;
|
| 478 |
entries = (PALETTEENTRY *) ckalloc(sizeof(PALETTEENTRY)
|
| 479 |
* count);
|
| 480 |
GetPaletteEntries(cmap->palette, index+1, count, entries);
|
| 481 |
SetPaletteEntries(cmap->palette, index, count, entries);
|
| 482 |
ckfree((char *) entries);
|
| 483 |
cmap->size--;
|
| 484 |
} else {
|
| 485 |
panic("Tried to free a color that isn't allocated.");
|
| 486 |
}
|
| 487 |
Tcl_DeleteHashEntry(entryPtr);
|
| 488 |
} else {
|
| 489 |
Tcl_SetHashValue(entryPtr, (ClientData)refCount);
|
| 490 |
}
|
| 491 |
}
|
| 492 |
}
|
| 493 |
ReleaseDC(NULL, dc);
|
| 494 |
}
|
| 495 |
|
| 496 |
/*
|
| 497 |
*----------------------------------------------------------------------
|
| 498 |
*
|
| 499 |
* XCreateColormap --
|
| 500 |
*
|
| 501 |
* Allocate a new colormap.
|
| 502 |
*
|
| 503 |
* Results:
|
| 504 |
* Returns a newly allocated colormap.
|
| 505 |
*
|
| 506 |
* Side effects:
|
| 507 |
* Allocates an empty palette and color list.
|
| 508 |
*
|
| 509 |
*----------------------------------------------------------------------
|
| 510 |
*/
|
| 511 |
|
| 512 |
Colormap
|
| 513 |
XCreateColormap(display, w, visual, alloc)
|
| 514 |
Display* display;
|
| 515 |
Window w;
|
| 516 |
Visual* visual;
|
| 517 |
int alloc;
|
| 518 |
{
|
| 519 |
char logPalBuf[sizeof(LOGPALETTE) + 256 * sizeof(PALETTEENTRY)];
|
| 520 |
LOGPALETTE *logPalettePtr;
|
| 521 |
PALETTEENTRY *entryPtr;
|
| 522 |
TkWinColormap *cmap;
|
| 523 |
Tcl_HashEntry *hashPtr;
|
| 524 |
int new;
|
| 525 |
UINT i;
|
| 526 |
HPALETTE sysPal;
|
| 527 |
|
| 528 |
/*
|
| 529 |
* Allocate a starting palette with all of the reserved colors.
|
| 530 |
*/
|
| 531 |
|
| 532 |
logPalettePtr = (LOGPALETTE *) logPalBuf;
|
| 533 |
logPalettePtr->palVersion = 0x300;
|
| 534 |
sysPal = (HPALETTE) GetStockObject(DEFAULT_PALETTE);
|
| 535 |
logPalettePtr->palNumEntries = GetPaletteEntries(sysPal, 0, 256,
|
| 536 |
logPalettePtr->palPalEntry);
|
| 537 |
|
| 538 |
cmap = (TkWinColormap *) ckalloc(sizeof(TkWinColormap));
|
| 539 |
cmap->size = logPalettePtr->palNumEntries;
|
| 540 |
cmap->stale = 0;
|
| 541 |
cmap->palette = CreatePalette(logPalettePtr);
|
| 542 |
|
| 543 |
/*
|
| 544 |
* Add hash entries for each of the static colors.
|
| 545 |
*/
|
| 546 |
|
| 547 |
Tcl_InitHashTable(&cmap->refCounts, TCL_ONE_WORD_KEYS);
|
| 548 |
for (i = 0; i < logPalettePtr->palNumEntries; i++) {
|
| 549 |
entryPtr = logPalettePtr->palPalEntry + i;
|
| 550 |
hashPtr = Tcl_CreateHashEntry(&cmap->refCounts, (char*) PALETTERGB(
|
| 551 |
entryPtr->peRed, entryPtr->peGreen, entryPtr->peBlue), &new);
|
| 552 |
Tcl_SetHashValue(hashPtr, (ClientData)1);
|
| 553 |
}
|
| 554 |
|
| 555 |
return (Colormap)cmap;
|
| 556 |
}
|
| 557 |
|
| 558 |
/*
|
| 559 |
*----------------------------------------------------------------------
|
| 560 |
*
|
| 561 |
* XFreeColormap --
|
| 562 |
*
|
| 563 |
* Frees the resources associated with the given colormap.
|
| 564 |
*
|
| 565 |
* Results:
|
| 566 |
* None.
|
| 567 |
*
|
| 568 |
* Side effects:
|
| 569 |
* Deletes the palette associated with the colormap. Note that
|
| 570 |
* the palette must not be selected into a device context when
|
| 571 |
* this occurs.
|
| 572 |
*
|
| 573 |
*----------------------------------------------------------------------
|
| 574 |
*/
|
| 575 |
|
| 576 |
void
|
| 577 |
XFreeColormap(display, colormap)
|
| 578 |
Display* display;
|
| 579 |
Colormap colormap;
|
| 580 |
{
|
| 581 |
TkWinColormap *cmap = (TkWinColormap *) colormap;
|
| 582 |
if (!DeleteObject(cmap->palette)) {
|
| 583 |
panic("Unable to free colormap, palette is still selected.");
|
| 584 |
}
|
| 585 |
Tcl_DeleteHashTable(&cmap->refCounts);
|
| 586 |
ckfree((char *) cmap);
|
| 587 |
}
|
| 588 |
|
| 589 |
/*
|
| 590 |
*----------------------------------------------------------------------
|
| 591 |
*
|
| 592 |
* TkWinSelectPalette --
|
| 593 |
*
|
| 594 |
* This function sets up the specified device context with a
|
| 595 |
* given palette. If the palette is stale, it realizes it in
|
| 596 |
* the background unless the palette is the current global
|
| 597 |
* palette.
|
| 598 |
*
|
| 599 |
* Results:
|
| 600 |
* Returns the previous palette selected into the device context.
|
| 601 |
*
|
| 602 |
* Side effects:
|
| 603 |
* May change the system palette.
|
| 604 |
*
|
| 605 |
*----------------------------------------------------------------------
|
| 606 |
*/
|
| 607 |
|
| 608 |
HPALETTE
|
| 609 |
TkWinSelectPalette(dc, colormap)
|
| 610 |
HDC dc;
|
| 611 |
Colormap colormap;
|
| 612 |
{
|
| 613 |
TkWinColormap *cmap = (TkWinColormap *) colormap;
|
| 614 |
HPALETTE oldPalette;
|
| 615 |
|
| 616 |
oldPalette = SelectPalette(dc, cmap->palette,
|
| 617 |
(cmap->palette == TkWinGetSystemPalette()) ? FALSE : TRUE);
|
| 618 |
RealizePalette(dc);
|
| 619 |
return oldPalette;
|
| 620 |
}
|
| 621 |
|
| 622 |
|
| 623 |
/* $History: tkWinColor.c $
|
| 624 |
*
|
| 625 |
* ***************** Version 1 *****************
|
| 626 |
* User: Dtashley Date: 1/02/01 Time: 3:10a
|
| 627 |
* Created in $/IjuScripter, IjuConsole/Source/Tk Base
|
| 628 |
* Initial check-in.
|
| 629 |
*/
|
| 630 |
|
| 631 |
/* End of TKWINCOLOR.C */ |
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