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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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/*
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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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/*
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*----------------------------------------------------------------------
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*
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* TkWinIndexOfColor --
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*
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* Given a color, return the system color index that was used
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* to create the color.
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*
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* Results:
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* 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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* Side effects:
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* None.
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*
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*----------------------------------------------------------------------
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*/
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int
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TkWinIndexOfColor(colorPtr)
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XColor *colorPtr;
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{
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register WinColor *winColPtr = (WinColor *) colorPtr;
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if (winColPtr->info.magic == COLOR_MAGIC) {
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return winColPtr->index;
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}
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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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* XAllocColor --
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*
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* Find the closest available color to the specified XColor.
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*
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* Results:
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* Updates the color argument and returns 1 on success. Otherwise
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* returns 0.
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*
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* Side effects:
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* Allocates a new color in the palette.
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*
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*----------------------------------------------------------------------
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*/
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337 |
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int
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XAllocColor(display, colormap, color)
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Display* display;
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Colormap colormap;
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XColor* color;
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{
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TkWinColormap *cmap = (TkWinColormap *) colormap;
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PALETTEENTRY entry, closeEntry;
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HDC dc = GetDC(NULL);
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entry.peRed = (color->red) >> 8;
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entry.peGreen = (color->green) >> 8;
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entry.peBlue = (color->blue) >> 8;
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entry.peFlags = 0;
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if (GetDeviceCaps(dc, RASTERCAPS) & RC_PALETTE) {
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354 |
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unsigned long sizePalette = GetDeviceCaps(dc, SIZEPALETTE);
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UINT newPixel, closePixel;
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356 |
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int new, refCount;
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357 |
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Tcl_HashEntry *entryPtr;
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UINT index;
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359 |
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360 |
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/*
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361 |
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* Find the nearest existing palette entry.
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*/
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363 |
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newPixel = RGB(entry.peRed, entry.peGreen, entry.peBlue);
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index = GetNearestPaletteIndex(cmap->palette, newPixel);
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GetPaletteEntries(cmap->palette, index, 1, &closeEntry);
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closePixel = RGB(closeEntry.peRed, closeEntry.peGreen,
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closeEntry.peBlue);
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369 |
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/*
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371 |
|
|
* If this is not a duplicate, allocate a new entry. Note that
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372 |
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* we may get values for index that are above the current size
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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 */ |