| 1 |
/* $Header$ */ |
| 2 |
|
| 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 |
* |
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* 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 |
* |
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* 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 |
* |
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* 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 |
/* End of tkwincolor.c */ |
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