| 1 |
dashley |
69 |
/* $Header$ */
|
| 2 |
dashley |
25 |
|
| 3 |
|
|
/*
|
| 4 |
|
|
* tkWinColor.c --
|
| 5 |
|
|
*
|
| 6 |
|
|
* Functions to map color names to system color values.
|
| 7 |
|
|
*
|
| 8 |
|
|
* Copyright (c) 1995 Sun Microsystems, Inc.
|
| 9 |
|
|
* Copyright (c) 1994 Software Research Associates, 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: tkwincolor.c,v 1.1.1.1 2001/06/13 05:12:03 dtashley Exp $
|
| 15 |
|
|
*/
|
| 16 |
|
|
|
| 17 |
|
|
#include "tkWinInt.h"
|
| 18 |
|
|
#include "tkColor.h"
|
| 19 |
|
|
|
| 20 |
|
|
/*
|
| 21 |
|
|
* The following structure is used to keep track of each color that is
|
| 22 |
|
|
* allocated by this module.
|
| 23 |
|
|
*/
|
| 24 |
|
|
|
| 25 |
|
|
typedef struct WinColor {
|
| 26 |
|
|
TkColor info; /* Generic color information. */
|
| 27 |
|
|
int index; /* Index for GetSysColor(), -1 if color
|
| 28 |
|
|
* is not a "live" system color. */
|
| 29 |
|
|
} WinColor;
|
| 30 |
|
|
|
| 31 |
|
|
/*
|
| 32 |
|
|
* The sysColors array contains the names and index values for the
|
| 33 |
|
|
* Windows indirect system color names. In use, all of the names
|
| 34 |
|
|
* will have the string "System" prepended, but we omit it in the table
|
| 35 |
|
|
* to save space.
|
| 36 |
|
|
*/
|
| 37 |
|
|
|
| 38 |
|
|
typedef struct {
|
| 39 |
|
|
char *name;
|
| 40 |
|
|
int index;
|
| 41 |
|
|
} SystemColorEntry;
|
| 42 |
|
|
|
| 43 |
|
|
|
| 44 |
|
|
static SystemColorEntry sysColors[] = {
|
| 45 |
|
|
"3dDarkShadow", COLOR_3DDKSHADOW,
|
| 46 |
|
|
"3dLight", COLOR_3DLIGHT,
|
| 47 |
|
|
"ActiveBorder", COLOR_ACTIVEBORDER,
|
| 48 |
|
|
"ActiveCaption", COLOR_ACTIVECAPTION,
|
| 49 |
|
|
"AppWorkspace", COLOR_APPWORKSPACE,
|
| 50 |
|
|
"Background", COLOR_BACKGROUND,
|
| 51 |
|
|
"ButtonFace", COLOR_BTNFACE,
|
| 52 |
|
|
"ButtonHighlight", COLOR_BTNHIGHLIGHT,
|
| 53 |
|
|
"ButtonShadow", COLOR_BTNSHADOW,
|
| 54 |
|
|
"ButtonText", COLOR_BTNTEXT,
|
| 55 |
|
|
"CaptionText", COLOR_CAPTIONTEXT,
|
| 56 |
|
|
"DisabledText", COLOR_GRAYTEXT,
|
| 57 |
|
|
"GrayText", COLOR_GRAYTEXT,
|
| 58 |
|
|
"Highlight", COLOR_HIGHLIGHT,
|
| 59 |
|
|
"HighlightText", COLOR_HIGHLIGHTTEXT,
|
| 60 |
|
|
"InactiveBorder", COLOR_INACTIVEBORDER,
|
| 61 |
|
|
"InactiveCaption", COLOR_INACTIVECAPTION,
|
| 62 |
|
|
"InactiveCaptionText", COLOR_INACTIVECAPTIONTEXT,
|
| 63 |
|
|
"InfoBackground", COLOR_INFOBK,
|
| 64 |
|
|
"InfoText", COLOR_INFOTEXT,
|
| 65 |
|
|
"Menu", COLOR_MENU,
|
| 66 |
|
|
"MenuText", COLOR_MENUTEXT,
|
| 67 |
|
|
"Scrollbar", COLOR_SCROLLBAR,
|
| 68 |
|
|
"Window", COLOR_WINDOW,
|
| 69 |
|
|
"WindowFrame", COLOR_WINDOWFRAME,
|
| 70 |
|
|
"WindowText", COLOR_WINDOWTEXT,
|
| 71 |
|
|
NULL, 0
|
| 72 |
|
|
};
|
| 73 |
|
|
|
| 74 |
|
|
typedef struct ThreadSpecificData {
|
| 75 |
|
|
int ncolors;
|
| 76 |
|
|
} ThreadSpecificData;
|
| 77 |
|
|
static Tcl_ThreadDataKey dataKey;
|
| 78 |
|
|
|
| 79 |
|
|
/*
|
| 80 |
|
|
* Forward declarations for functions defined later in this file.
|
| 81 |
|
|
*/
|
| 82 |
|
|
|
| 83 |
|
|
static int FindSystemColor _ANSI_ARGS_((const char *name,
|
| 84 |
|
|
XColor *colorPtr, int *indexPtr));
|
| 85 |
|
|
static int GetColorByName _ANSI_ARGS_((char *name, XColor *color));
|
| 86 |
|
|
static int GetColorByValue _ANSI_ARGS_((char *value, XColor *color));
|
| 87 |
|
|
|
| 88 |
|
|
/*
|
| 89 |
|
|
*----------------------------------------------------------------------
|
| 90 |
|
|
*
|
| 91 |
|
|
* FindSystemColor --
|
| 92 |
|
|
*
|
| 93 |
|
|
* This routine finds the color entry that corresponds to the
|
| 94 |
|
|
* specified color.
|
| 95 |
|
|
*
|
| 96 |
|
|
* Results:
|
| 97 |
|
|
* Returns non-zero on success. The RGB values of the XColor
|
| 98 |
|
|
* will be initialized to the proper values on success.
|
| 99 |
|
|
*
|
| 100 |
|
|
* Side effects:
|
| 101 |
|
|
* None.
|
| 102 |
|
|
*
|
| 103 |
|
|
*----------------------------------------------------------------------
|
| 104 |
|
|
*/
|
| 105 |
|
|
|
| 106 |
|
|
static int
|
| 107 |
|
|
FindSystemColor(name, colorPtr, indexPtr)
|
| 108 |
|
|
const char *name; /* Color name. */
|
| 109 |
|
|
XColor *colorPtr; /* Where to store results. */
|
| 110 |
|
|
int *indexPtr; /* Out parameter to store color index. */
|
| 111 |
|
|
{
|
| 112 |
|
|
int l, u, r, i;
|
| 113 |
|
|
ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
|
| 114 |
|
|
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
|
| 115 |
|
|
|
| 116 |
|
|
/*
|
| 117 |
|
|
* Count the number of elements in the color array if we haven't
|
| 118 |
|
|
* done so yet.
|
| 119 |
|
|
*/
|
| 120 |
|
|
|
| 121 |
|
|
if (tsdPtr->ncolors == 0) {
|
| 122 |
|
|
SystemColorEntry *ePtr;
|
| 123 |
|
|
int version;
|
| 124 |
|
|
|
| 125 |
|
|
version = LOBYTE(LOWORD(GetVersion()));
|
| 126 |
|
|
for (ePtr = sysColors; ePtr->name != NULL; ePtr++) {
|
| 127 |
|
|
if (version < 4) {
|
| 128 |
|
|
if (ePtr->index == COLOR_3DDKSHADOW) {
|
| 129 |
|
|
ePtr->index = COLOR_BTNSHADOW;
|
| 130 |
|
|
} else if (ePtr->index == COLOR_3DLIGHT) {
|
| 131 |
|
|
ePtr->index = COLOR_BTNHIGHLIGHT;
|
| 132 |
|
|
}
|
| 133 |
|
|
}
|
| 134 |
|
|
tsdPtr->ncolors++;
|
| 135 |
|
|
}
|
| 136 |
|
|
}
|
| 137 |
|
|
|
| 138 |
|
|
/*
|
| 139 |
|
|
* Perform a binary search on the sorted array of colors.
|
| 140 |
|
|
*/
|
| 141 |
|
|
|
| 142 |
|
|
l = 0;
|
| 143 |
|
|
u = tsdPtr->ncolors - 1;
|
| 144 |
|
|
while (l <= u) {
|
| 145 |
|
|
i = (l + u) / 2;
|
| 146 |
|
|
r = strcasecmp(name, sysColors[i].name);
|
| 147 |
|
|
if (r == 0) {
|
| 148 |
|
|
break;
|
| 149 |
|
|
} else if (r < 0) {
|
| 150 |
|
|
u = i-1;
|
| 151 |
|
|
} else {
|
| 152 |
|
|
l = i+1;
|
| 153 |
|
|
}
|
| 154 |
|
|
}
|
| 155 |
|
|
if (l > u) {
|
| 156 |
|
|
return 0;
|
| 157 |
|
|
}
|
| 158 |
|
|
|
| 159 |
|
|
*indexPtr = sysColors[i].index;
|
| 160 |
|
|
colorPtr->pixel = GetSysColor(sysColors[i].index);
|
| 161 |
|
|
/*
|
| 162 |
|
|
* x257 is (value<<8 + value) to get the properly bit shifted
|
| 163 |
|
|
* and padded value. [Bug: 4919]
|
| 164 |
|
|
*/
|
| 165 |
|
|
colorPtr->red = GetRValue(colorPtr->pixel) * 257;
|
| 166 |
|
|
colorPtr->green = GetGValue(colorPtr->pixel) * 257;
|
| 167 |
|
|
colorPtr->blue = GetBValue(colorPtr->pixel) * 257;
|
| 168 |
|
|
colorPtr->flags = DoRed|DoGreen|DoBlue;
|
| 169 |
|
|
colorPtr->pad = 0;
|
| 170 |
|
|
return 1;
|
| 171 |
|
|
}
|
| 172 |
|
|
|
| 173 |
|
|
/*
|
| 174 |
|
|
*----------------------------------------------------------------------
|
| 175 |
|
|
*
|
| 176 |
|
|
* TkpGetColor --
|
| 177 |
|
|
*
|
| 178 |
|
|
* Allocate a new TkColor for the color with the given name.
|
| 179 |
|
|
*
|
| 180 |
|
|
* Results:
|
| 181 |
|
|
* Returns a newly allocated TkColor, or NULL on failure.
|
| 182 |
|
|
*
|
| 183 |
|
|
* Side effects:
|
| 184 |
|
|
* May invalidate the colormap cache associated with tkwin upon
|
| 185 |
|
|
* allocating a new colormap entry. Allocates a new TkColor
|
| 186 |
|
|
* structure.
|
| 187 |
|
|
*
|
| 188 |
|
|
*----------------------------------------------------------------------
|
| 189 |
|
|
*/
|
| 190 |
|
|
|
| 191 |
|
|
TkColor *
|
| 192 |
|
|
TkpGetColor(tkwin, name)
|
| 193 |
|
|
Tk_Window tkwin; /* Window in which color will be used. */
|
| 194 |
|
|
Tk_Uid name; /* Name of color to allocated (in form
|
| 195 |
|
|
* suitable for passing to XParseColor). */
|
| 196 |
|
|
{
|
| 197 |
|
|
WinColor *winColPtr;
|
| 198 |
|
|
XColor color;
|
| 199 |
|
|
int index = -1; /* -1 indicates that this is not an indirect
|
| 200 |
|
|
* sytem color. */
|
| 201 |
|
|
|
| 202 |
|
|
/*
|
| 203 |
|
|
* Check to see if it is a system color or an X color string. If the
|
| 204 |
|
|
* color is found, allocate a new WinColor and store the XColor and the
|
| 205 |
|
|
* system color index.
|
| 206 |
|
|
*/
|
| 207 |
|
|
|
| 208 |
|
|
if (((strncasecmp(name, "system", 6) == 0)
|
| 209 |
|
|
&& FindSystemColor(name+6, &color, &index))
|
| 210 |
|
|
|| XParseColor(Tk_Display(tkwin), Tk_Colormap(tkwin), name,
|
| 211 |
|
|
&color)) {
|
| 212 |
|
|
winColPtr = (WinColor *) ckalloc(sizeof(WinColor));
|
| 213 |
|
|
winColPtr->info.color = color;
|
| 214 |
|
|
winColPtr->index = index;
|
| 215 |
|
|
|
| 216 |
|
|
XAllocColor(Tk_Display(tkwin), Tk_Colormap(tkwin),
|
| 217 |
|
|
&winColPtr->info.color);
|
| 218 |
|
|
return (TkColor *) winColPtr;
|
| 219 |
|
|
}
|
| 220 |
|
|
return (TkColor *) NULL;
|
| 221 |
|
|
}
|
| 222 |
|
|
|
| 223 |
|
|
/*
|
| 224 |
|
|
*----------------------------------------------------------------------
|
| 225 |
|
|
*
|
| 226 |
|
|
* TkpGetColorByValue --
|
| 227 |
|
|
*
|
| 228 |
|
|
* Given a desired set of red-green-blue intensities for a color,
|
| 229 |
|
|
* locate a pixel value to use to draw that color in a given
|
| 230 |
|
|
* window.
|
| 231 |
|
|
*
|
| 232 |
|
|
* Results:
|
| 233 |
|
|
* The return value is a pointer to an TkColor structure that
|
| 234 |
|
|
* indicates the closest red, blue, and green intensities available
|
| 235 |
|
|
* to those specified in colorPtr, and also specifies a pixel
|
| 236 |
|
|
* value to use to draw in that color.
|
| 237 |
|
|
*
|
| 238 |
|
|
* Side effects:
|
| 239 |
|
|
* May invalidate the colormap cache for the specified window.
|
| 240 |
|
|
* Allocates a new TkColor structure.
|
| 241 |
|
|
*
|
| 242 |
|
|
*----------------------------------------------------------------------
|
| 243 |
|
|
*/
|
| 244 |
|
|
|
| 245 |
|
|
TkColor *
|
| 246 |
|
|
TkpGetColorByValue(tkwin, colorPtr)
|
| 247 |
|
|
Tk_Window tkwin; /* Window in which color will be used. */
|
| 248 |
|
|
XColor *colorPtr; /* Red, green, and blue fields indicate
|
| 249 |
|
|
* desired color. */
|
| 250 |
|
|
{
|
| 251 |
|
|
WinColor *tkColPtr = (WinColor *) ckalloc(sizeof(WinColor));
|
| 252 |
|
|
|
| 253 |
|
|
tkColPtr->info.color.red = colorPtr->red;
|
| 254 |
|
|
tkColPtr->info.color.green = colorPtr->green;
|
| 255 |
|
|
tkColPtr->info.color.blue = colorPtr->blue;
|
| 256 |
|
|
tkColPtr->info.color.pixel = 0;
|
| 257 |
|
|
tkColPtr->index = -1;
|
| 258 |
|
|
XAllocColor(Tk_Display(tkwin), Tk_Colormap(tkwin), &tkColPtr->info.color);
|
| 259 |
|
|
return (TkColor *) tkColPtr;
|
| 260 |
|
|
}
|
| 261 |
|
|
|
| 262 |
|
|
/*
|
| 263 |
|
|
*----------------------------------------------------------------------
|
| 264 |
|
|
*
|
| 265 |
|
|
* TkpFreeColor --
|
| 266 |
|
|
*
|
| 267 |
|
|
* Release the specified color back to the system.
|
| 268 |
|
|
*
|
| 269 |
|
|
* Results:
|
| 270 |
|
|
* None
|
| 271 |
|
|
*
|
| 272 |
|
|
* Side effects:
|
| 273 |
|
|
* Invalidates the colormap cache for the colormap associated with
|
| 274 |
|
|
* the given color.
|
| 275 |
|
|
*
|
| 276 |
|
|
*----------------------------------------------------------------------
|
| 277 |
|
|
*/
|
| 278 |
|
|
|
| 279 |
|
|
void
|
| 280 |
|
|
TkpFreeColor(tkColPtr)
|
| 281 |
|
|
TkColor *tkColPtr; /* Color to be released. Must have been
|
| 282 |
|
|
* allocated by TkpGetColor or
|
| 283 |
|
|
* TkpGetColorByValue. */
|
| 284 |
|
|
{
|
| 285 |
|
|
Screen *screen = tkColPtr->screen;
|
| 286 |
|
|
|
| 287 |
|
|
XFreeColors(DisplayOfScreen(screen), tkColPtr->colormap,
|
| 288 |
|
|
&tkColPtr->color.pixel, 1, 0L);
|
| 289 |
|
|
}
|
| 290 |
|
|
|
| 291 |
|
|
/*
|
| 292 |
|
|
*----------------------------------------------------------------------
|
| 293 |
|
|
*
|
| 294 |
|
|
* TkWinIndexOfColor --
|
| 295 |
|
|
*
|
| 296 |
|
|
* Given a color, return the system color index that was used
|
| 297 |
|
|
* to create the color.
|
| 298 |
|
|
*
|
| 299 |
|
|
* Results:
|
| 300 |
|
|
* If the color was allocated using a system indirect color name,
|
| 301 |
|
|
* then the corresponding GetSysColor() index is returned.
|
| 302 |
|
|
* Otherwise, -1 is returned.
|
| 303 |
|
|
*
|
| 304 |
|
|
* Side effects:
|
| 305 |
|
|
* None.
|
| 306 |
|
|
*
|
| 307 |
|
|
*----------------------------------------------------------------------
|
| 308 |
|
|
*/
|
| 309 |
|
|
|
| 310 |
|
|
int
|
| 311 |
|
|
TkWinIndexOfColor(colorPtr)
|
| 312 |
|
|
XColor *colorPtr;
|
| 313 |
|
|
{
|
| 314 |
|
|
register WinColor *winColPtr = (WinColor *) colorPtr;
|
| 315 |
|
|
if (winColPtr->info.magic == COLOR_MAGIC) {
|
| 316 |
|
|
return winColPtr->index;
|
| 317 |
|
|
}
|
| 318 |
|
|
return -1;
|
| 319 |
|
|
}
|
| 320 |
|
|
|
| 321 |
|
|
/*
|
| 322 |
|
|
*----------------------------------------------------------------------
|
| 323 |
|
|
*
|
| 324 |
|
|
* XAllocColor --
|
| 325 |
|
|
*
|
| 326 |
|
|
* Find the closest available color to the specified XColor.
|
| 327 |
|
|
*
|
| 328 |
|
|
* Results:
|
| 329 |
|
|
* Updates the color argument and returns 1 on success. Otherwise
|
| 330 |
|
|
* returns 0.
|
| 331 |
|
|
*
|
| 332 |
|
|
* Side effects:
|
| 333 |
|
|
* Allocates a new color in the palette.
|
| 334 |
|
|
*
|
| 335 |
|
|
*----------------------------------------------------------------------
|
| 336 |
|
|
*/
|
| 337 |
|
|
|
| 338 |
|
|
int
|
| 339 |
|
|
XAllocColor(display, colormap, color)
|
| 340 |
|
|
Display* display;
|
| 341 |
|
|
Colormap colormap;
|
| 342 |
|
|
XColor* color;
|
| 343 |
|
|
{
|
| 344 |
|
|
TkWinColormap *cmap = (TkWinColormap *) colormap;
|
| 345 |
|
|
PALETTEENTRY entry, closeEntry;
|
| 346 |
|
|
HDC dc = GetDC(NULL);
|
| 347 |
|
|
|
| 348 |
|
|
entry.peRed = (color->red) >> 8;
|
| 349 |
|
|
entry.peGreen = (color->green) >> 8;
|
| 350 |
|
|
entry.peBlue = (color->blue) >> 8;
|
| 351 |
|
|
entry.peFlags = 0;
|
| 352 |
|
|
|
| 353 |
|
|
if (GetDeviceCaps(dc, RASTERCAPS) & RC_PALETTE) {
|
| 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 |
dashley |
69 |
/* End of tkwincolor.c */
|
Parent Directory
| 
Revision Log