1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
|
/****************************************************************************
**
** Implementation of TQColor class
**
** Created : 940112
**
** Copyright (C) 2010 Timothy Pearson and (C) 1992-2008 Trolltech ASA.
**
** This file is part of the kernel module of the TQt GUI Toolkit.
**
** This file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the files LICENSE.GPL2
** and LICENSE.GPL3 included in the packaging of this file.
** Alternatively you may (at your option) use any later version
** of the GNU General Public License if such license has been
** publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free TQt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.TQPL
** included in the packaging of this file. Licensees holding valid TQt
** Commercial licenses may use this file in accordance with the TQt
** Commercial License Agreement provided with the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/
#include "tqcolor.h"
#include "tqnamespace.h"
#include "tqdatastream.h"
#include <stdio.h>
#ifdef USE_QT4
#include "Qt/qcolormap.h"
/*****************************************************************************
Global colors
*****************************************************************************/
#if defined(TQ_WS_WIN)
#define COLOR0_PIX 0x00ffffff
#define COLOR1_PIX 0
#else
#define COLOR0_PIX 0
#define COLOR1_PIX 1
#endif
#if (defined(TQ_CC_GNU) && defined(TQ_OS_WIN))
// workaround - bug in mingw
static TQColor stdcol[19] = {
TQColor( 255, 255, 255 ),
TQColor( 0, 0, 0 ),
TQColor( 0, 0, 0 ),
TQColor( 255, 255, 255 ),
TQColor( 128, 128, 128 ),
TQColor( 160, 160, 164 ),
TQColor( 192, 192, 192 ),
TQColor( 255, 0, 0 ),
TQColor( 0, 255, 0 ),
TQColor( 0, 0, 255 ),
TQColor( 0, 255, 255 ),
TQColor( 255, 0, 255 ),
TQColor( 255, 255, 0 ),
TQColor( 128, 0, 0 ),
TQColor( 0, 128, 0 ),
TQColor( 0, 0, 128 ),
TQColor( 0, 128, 128 ),
TQColor( 128, 0, 128 ),
TQColor( 128, 128, 0 ) };
#else
static TQColor stdcol[19];
#endif
TQT_STATIC_CONST_IMPL TQColor & TQt::color0 = stdcol[0];
TQT_STATIC_CONST_IMPL TQColor & TQt::color1 = stdcol[1];
TQT_STATIC_CONST_IMPL TQColor & TQt::black = stdcol[2];
TQT_STATIC_CONST_IMPL TQColor & TQt::white = stdcol[3];
TQT_STATIC_CONST_IMPL TQColor & TQt::darkGray = stdcol[4];
TQT_STATIC_CONST_IMPL TQColor & TQt::gray = stdcol[5];
TQT_STATIC_CONST_IMPL TQColor & TQt::lightGray = stdcol[6];
TQT_STATIC_CONST_IMPL TQColor & TQt::red = stdcol[7];
TQT_STATIC_CONST_IMPL TQColor & TQt::green = stdcol[8];
TQT_STATIC_CONST_IMPL TQColor & TQt::blue = stdcol[9];
TQT_STATIC_CONST_IMPL TQColor & TQt::cyan = stdcol[10];
TQT_STATIC_CONST_IMPL TQColor & TQt::magenta = stdcol[11];
TQT_STATIC_CONST_IMPL TQColor & TQt::yellow = stdcol[12];
TQT_STATIC_CONST_IMPL TQColor & TQt::darkRed = stdcol[13];
TQT_STATIC_CONST_IMPL TQColor & TQt::darkGreen = stdcol[14];
TQT_STATIC_CONST_IMPL TQColor & TQt::darkBlue = stdcol[15];
TQT_STATIC_CONST_IMPL TQColor & TQt::darkCyan = stdcol[16];
TQT_STATIC_CONST_IMPL TQColor & TQt::darkMagenta = stdcol[17];
TQT_STATIC_CONST_IMPL TQColor & TQt::darkYellow = stdcol[18];
/*****************************************************************************
TQColor member functions
*****************************************************************************/
bool TQColor::color_init = FALSE; // color system not initialized
bool TQColor::globals_init = FALSE; // global color not initialized
TQColor::ColorModel TQColor::colormodel = d32;
/*!
Returns the pixel value used by the underlying window system to refer to a
color.
Use QColormap::pixel() instead.
\oldcode
QColor myColor;
uint pixel = myColor.pixel(screen);
\newcode
QColormap cmap = QColormap::instance(screen);
uint pixel = cmap.pixel(*this);
\endcode
*/
uint TQColor::pixel(int screen) const
{
QColormap cmap = QColormap::instance(screen);
return cmap.pixel(*this);
}
void TQColor::initGlobalColors()
{
globals_init = TRUE;
// #ifdef TQ_WS_X11
// // HACK: we need a way to recognize color0 and color1 uniquely, so
// // that we can use color0 and color1 with fixed pixel values on
// // all screens
// stdcol[ 0].d.argb = tqRgba(255, 255, 255, 1);
// stdcol[ 1].d.argb = tqRgba( 0, 0, 0, 1);
// #else
// stdcol[ 0].d.argb = tqRgb(255,255,255);
// stdcol[ 1].d.argb = 0;
// #endif // TQ_WS_X11
// stdcol[ 0].setPixel( COLOR0_PIX );
// stdcol[ 1].setPixel( COLOR1_PIX );
stdcol[ 0] = Qt::color0;
stdcol[ 1] = Qt::color1;
// From the "The Palette Manager: How and Why" by Ron Gery, March 23,
// 1992, archived on MSDN:
// The Windows system palette is broken up into two sections,
// one with fixed colors and one with colors that can be changed
// by applications. The system palette predefines 20 entries;
// these colors are known as the static or reserved colors and
// consist of the 16 colors found in the Windows version 3.0 VGA
// driver and 4 additional colors chosen for their visual appeal.
// The DEFAULT_PALETTE stock object is, as the name implies, the
// default palette selected into a tqdevice context (DC) and consists
// of these static colors. Applications can set the remaining 236
// colors using the Palette Manager.
// The 20 reserved entries have indices in [0,9] and [246,255]. We
// reuse 17 of them.
stdcol[ 2].setRgb( 0, 0, 0 ); // index 0 black
stdcol[ 3].setRgb( 255, 255, 255 ); // index 255 white
stdcol[ 4].setRgb( 128, 128, 128 ); // index 248 medium gray
stdcol[ 5].setRgb( 160, 160, 164 ); // index 247 light gray
stdcol[ 6].setRgb( 192, 192, 192 ); // index 7 light gray
stdcol[ 7].setRgb( 255, 0, 0 ); // index 249 red
stdcol[ 8].setRgb( 0, 255, 0 ); // index 250 green
stdcol[ 9].setRgb( 0, 0, 255 ); // index 252 blue
stdcol[10].setRgb( 0, 255, 255 ); // index 254 cyan
stdcol[11].setRgb( 255, 0, 255 ); // index 253 magenta
stdcol[12].setRgb( 255, 255, 0 ); // index 251 yellow
stdcol[13].setRgb( 128, 0, 0 ); // index 1 dark red
stdcol[14].setRgb( 0, 128, 0 ); // index 2 dark green
stdcol[15].setRgb( 0, 0, 128 ); // index 4 dark blue
stdcol[16].setRgb( 0, 128, 128 ); // index 6 dark cyan
stdcol[17].setRgb( 128, 0, 128 ); // index 5 dark magenta
stdcol[18].setRgb( 128, 128, 0 ); // index 3 dark yellow
}
#else // USE_QT4
/*!
\class TQColor tqcolor.h
\brief The TQColor class provides colors based on RGB or HSV values.
\ingroup images
\ingroup graphics
\ingroup appearance
A color is normally specified in terms of RGB (red, green and blue)
components, but it is also possible to specify HSV (hue, saturation
and value) or set a color name (the names are copied from from the
X11 color database).
In addition to the RGB value, a TQColor also has a pixel value and a
validity. The pixel value is used by the underlying window system
to refer to a color. It can be thought of as an index into the
display hardware's color table.
The validity (isValid()) indicates whether the color is legal at
all. For example, a RGB color with RGB values out of range is
illegal. For performance reasons, TQColor mostly disregards illegal
colors. The result of using an invalid color is unspecified and
will usually be surprising.
There are 19 predefined TQColor objects: \c white, \c black, \c
red, \c darkRed, \c green, \c darkGreen, \c blue, \c darkBlue, \c
cyan, \c darkCyan, \c magenta, \c darkMagenta, \c yellow, \c
darkYellow, \c gray, \c darkGray, \c lightGray, \c color0 and \c
color1, accessible as members of the TQt namespace (ie. \c TQt::red).
\img qt-colors.png TQt Colors
The colors \c color0 (zero pixel value) and \c color1 (non-zero
pixel value) are special colors for drawing in \link TQBitmap
bitmaps\endlink. Painting with \c color0 sets the bitmap bits to 0
(transtqparent, i.e. background), and painting with \c color1 sets the
bits to 1 (opaque, i.e. foreground).
The TQColor class has an efficient, dynamic color allocation
strategy. A color is normally allocated the first time it is used
(lazy allocation), that is, whenever the pixel() function is called.
The following steps are taken to allocate a color. If, at any point,
a suitable color is found then the appropriate pixel value is
returned and the subsequent steps are not taken:
\list 1
\i Is the pixel value valid? If it is, just return it; otherwise,
allocate a pixel value.
\i Check an internal hash table to see if we allocated an equal RGB
value earlier. If we did, set the corresponding pixel value for the
color and return it.
\i Try to allocate the RGB value. If we succeed, we get a pixel value
that we save in the internal table with the RGB value.
Return the pixel value.
\i The color could not be allocated. Find the closest matching
color, save it in the internal table, and return it.
\endlist
A color can be set by passing setNamedColor() an RGB string like
"#112233", or a color name, e.g. "blue". The names are taken from
X11's rgb.txt database but can also be used under Windows. To get
a lighter or darker color use light() and dark() respectively.
Colors can also be set using setRgb() and setHsv(). The color
components can be accessed in one go with rgb() and hsv(), or
individually with red(), green() and blue().
Use maxColors() and numBitPlanes() to determine the maximum number
of colors and the number of bit planes supported by the underlying
window system,
If you need to allocate many colors temporarily, for example in an
image viewer application, enterAllocContext(), leaveAllocContext() and
destroyAllocContext() will prove useful.
\section1 HSV Colors
Because many people don't know the HSV color model very well, we'll
cover it briefly here.
The RGB model is hardware-oriented. Its representation is close to
what most monitors show. In contrast, HSV represents color in a way
more suited to the human perception of color. For example, the
relationships "stronger than", "darker than" and "the opposite of"
are easily expressed in HSV but are much harder to express in RGB.
HSV, like RGB, has three components:
\list
\i H, for hue, is either 0-359 if the color is chromatic (not
gray), or meaningless if it is gray. It represents degrees on the
color wheel familiar to most people. Red is 0 (degrees), green is
120 and blue is 240.
\i S, for saturation, is 0-255, and the bigger it is, the
stronger the color is. Grayish colors have saturation near 0; very
strong colors have saturation near 255.
\i V, for value, is 0-255 and represents lightness or brightness
of the color. 0 is black; 255 is as far from black as possible.
\endlist
Here are some examples: Pure red is H=0, S=255, V=255. A dark red,
moving slightly towards the magenta, could be H=350 (equivalent to
-10), S=255, V=180. A grayish light red could have H about 0 (say
350-359 or 0-10), S about 50-100, and S=255.
TQt returns a hue value of -1 for achromatic colors. If you pass a
too-big hue value, TQt forces it into range. Hue 360 or 720 is
treated as 0; hue 540 is treated as 180.
\sa TQPalette, TQColorGroup, TQApplication::setColorSpec(),
\link http://www.poynton.com/ColorFAQ.html Color FAQ\endlink
*/
/*****************************************************************************
Global colors
*****************************************************************************/
#if defined(TQ_WS_WIN)
#define COLOR0_PIX 0x00ffffff
#define COLOR1_PIX 0
#else
#define COLOR0_PIX 0
#define COLOR1_PIX 1
#endif
#if (defined(TQ_CC_GNU) && defined(TQ_OS_WIN))
// workaround - bug in mingw
static TQColor stdcol[19] = {
TQColor( 255, 255, 255 ),
TQColor( 0, 0, 0 ),
TQColor( 0, 0, 0 ),
TQColor( 255, 255, 255 ),
TQColor( 128, 128, 128 ),
TQColor( 160, 160, 164 ),
TQColor( 192, 192, 192 ),
TQColor( 255, 0, 0 ),
TQColor( 0, 255, 0 ),
TQColor( 0, 0, 255 ),
TQColor( 0, 255, 255 ),
TQColor( 255, 0, 255 ),
TQColor( 255, 255, 0 ),
TQColor( 128, 0, 0 ),
TQColor( 0, 128, 0 ),
TQColor( 0, 0, 128 ),
TQColor( 0, 128, 128 ),
TQColor( 128, 0, 128 ),
TQColor( 128, 128, 0 ) };
#else
static TQColor stdcol[19];
#endif
TQT_STATIC_CONST_IMPL TQColor & TQt::color0 = stdcol[0];
TQT_STATIC_CONST_IMPL TQColor & TQt::color1 = stdcol[1];
TQT_STATIC_CONST_IMPL TQColor & TQt::black = stdcol[2];
TQT_STATIC_CONST_IMPL TQColor & TQt::white = stdcol[3];
TQT_STATIC_CONST_IMPL TQColor & TQt::darkGray = stdcol[4];
TQT_STATIC_CONST_IMPL TQColor & TQt::gray = stdcol[5];
TQT_STATIC_CONST_IMPL TQColor & TQt::lightGray = stdcol[6];
TQT_STATIC_CONST_IMPL TQColor & TQt::red = stdcol[7];
TQT_STATIC_CONST_IMPL TQColor & TQt::green = stdcol[8];
TQT_STATIC_CONST_IMPL TQColor & TQt::blue = stdcol[9];
TQT_STATIC_CONST_IMPL TQColor & TQt::cyan = stdcol[10];
TQT_STATIC_CONST_IMPL TQColor & TQt::magenta = stdcol[11];
TQT_STATIC_CONST_IMPL TQColor & TQt::yellow = stdcol[12];
TQT_STATIC_CONST_IMPL TQColor & TQt::darkRed = stdcol[13];
TQT_STATIC_CONST_IMPL TQColor & TQt::darkGreen = stdcol[14];
TQT_STATIC_CONST_IMPL TQColor & TQt::darkBlue = stdcol[15];
TQT_STATIC_CONST_IMPL TQColor & TQt::darkCyan = stdcol[16];
TQT_STATIC_CONST_IMPL TQColor & TQt::darkMagenta = stdcol[17];
TQT_STATIC_CONST_IMPL TQColor & TQt::darkYellow = stdcol[18];
/*****************************************************************************
TQColor member functions
*****************************************************************************/
bool TQColor::color_init = FALSE; // color system not initialized
bool TQColor::globals_init = FALSE; // global color not initialized
TQColor::ColorModel TQColor::colormodel = d32;
TQColor* TQColor::globalColors()
{
return stdcol;
}
/*!
Initializes the global colors. This function is called if a global
color variable is initialized before the constructors for our
global color objects are executed. Without this mechanism,
assigning a color might assign an uninitialized value.
Example:
\code
TQColor myColor = red; // will initialize red etc.
int main( int argc, char **argc )
{
}
\endcode
*/
void TQColor::initGlobalColors()
{
globals_init = TRUE;
#ifdef TQ_WS_X11
// HACK: we need a way to recognize color0 and color1 uniquely, so
// that we can use color0 and color1 with fixed pixel values on
// all screens
stdcol[ 0].d.argb = tqRgba(255, 255, 255, 1);
stdcol[ 1].d.argb = tqRgba( 0, 0, 0, 1);
#else
stdcol[ 0].d.argb = tqRgb(255,255,255);
stdcol[ 1].d.argb = 0;
#endif // TQ_WS_X11
stdcol[ 0].setPixel( COLOR0_PIX );
stdcol[ 1].setPixel( COLOR1_PIX );
// From the "The Palette Manager: How and Why" by Ron Gery, March 23,
// 1992, archived on MSDN:
// The Windows system palette is broken up into two sections,
// one with fixed colors and one with colors that can be changed
// by applications. The system palette predefines 20 entries;
// these colors are known as the static or reserved colors and
// consist of the 16 colors found in the Windows version 3.0 VGA
// driver and 4 additional colors chosen for their visual appeal.
// The DEFAULT_PALETTE stock object is, as the name implies, the
// default palette selected into a tqdevice context (DC) and consists
// of these static colors. Applications can set the remaining 236
// colors using the Palette Manager.
// The 20 reserved entries have indices in [0,9] and [246,255]. We
// reuse 17 of them.
stdcol[ 2].setRgb( 0, 0, 0 ); // index 0 black
stdcol[ 3].setRgb( 255, 255, 255 ); // index 255 white
stdcol[ 4].setRgb( 128, 128, 128 ); // index 248 medium gray
stdcol[ 5].setRgb( 160, 160, 164 ); // index 247 light gray
stdcol[ 6].setRgb( 192, 192, 192 ); // index 7 light gray
stdcol[ 7].setRgb( 255, 0, 0 ); // index 249 red
stdcol[ 8].setRgb( 0, 255, 0 ); // index 250 green
stdcol[ 9].setRgb( 0, 0, 255 ); // index 252 blue
stdcol[10].setRgb( 0, 255, 255 ); // index 254 cyan
stdcol[11].setRgb( 255, 0, 255 ); // index 253 magenta
stdcol[12].setRgb( 255, 255, 0 ); // index 251 yellow
stdcol[13].setRgb( 128, 0, 0 ); // index 1 dark red
stdcol[14].setRgb( 0, 128, 0 ); // index 2 dark green
stdcol[15].setRgb( 0, 0, 128 ); // index 4 dark blue
stdcol[16].setRgb( 0, 128, 128 ); // index 6 dark cyan
stdcol[17].setRgb( 128, 0, 128 ); // index 5 dark magenta
stdcol[18].setRgb( 128, 128, 0 ); // index 3 dark yellow
}
/*!
\enum TQColor::Spec
The type of color specified, either RGB or HSV, e.g. in the
\c{TQColor::TQColor( x, y, z, colorSpec)} constructor.
\value Rgb
\value Hsv
*/
/*!
\fn TQColor::TQColor()
Constructs an invalid color with the RGB value (0, 0, 0). An
invalid color is a color that is not properly set up for the
underlying window system.
The alpha value of an invalid color is unspecified.
\sa isValid()
*/
/*!
\fn TQColor::TQColor( int r, int g, int b )
Constructs a color with the RGB value \a r, \a g, \a b, in the
same way as setRgb().
The color is left invalid if any or the arguments are illegal.
\sa setRgb()
*/
/*!
Constructs a color with the RGB value \a rgb and a custom pixel
value \a pixel.
If \a pixel == 0xffffffff (the default), then the color uses the
RGB value in a standard way. If \a pixel is something else, then
the pixel value is set directly to \a pixel, skipping the normal
allocation procedure.
*/
TQColor::TQColor( TQRgb rgb, uint pixel )
{
if ( pixel == 0xffffffff ) {
setRgb( rgb );
} else {
d.argb = rgb;
setPixel( pixel );
}
}
void TQColor::setPixel( uint pixel )
{
switch ( colormodel ) {
case d8:
d.d8.direct = TRUE;
d.d8.invalid = FALSE;
d.d8.dirty = FALSE;
d.d8.pix = pixel;
break;
case d32:
d.d32.pix = pixel;
break;
}
}
/*!
Constructs a color with the RGB or HSV value \a x, \a y, \a z.
The arguments are an RGB value if \a colorSpec is TQColor::Rgb. \a
x (red), \a y (green), and \a z (blue). All of them must be in the
range 0-255.
The arguments are an HSV value if \a colorSpec is TQColor::Hsv. \a
x (hue) must be -1 for achromatic colors and 0-359 for chromatic
colors; \a y (saturation) and \a z (value) must both be in the
range 0-255.
\sa setRgb(), setHsv()
*/
TQColor::TQColor( int x, int y, int z, Spec colorSpec )
{
d.d32.argb = Invalid;
d.d32.pix = Dirt;
if ( colorSpec == Hsv )
setHsv( x, y, z );
else
setRgb( x, y, z );
}
/*!
Constructs a named color in the same way as setNamedColor() using
name \a name.
The color is left invalid if \a name cannot be parsed.
\sa setNamedColor()
*/
TQColor::TQColor( const TQString& name )
{
setNamedColor( name );
}
/*!
Constructs a named color in the same way as setNamedColor() using
name \a name.
The color is left invalid if \a name cannot be parsed.
\sa setNamedColor()
*/
TQColor::TQColor( const char *name )
{
setNamedColor( TQString(name) );
}
/*!
Constructs a color that is a copy of \a c.
*/
TQColor::TQColor( const TQColor &c )
{
if ( !globals_init )
initGlobalColors();
d.argb = c.d.argb;
d.d32.pix = c.d.d32.pix;
}
/*!
Assigns a copy of the color \a c and returns a reference to this
color.
*/
TQColor &TQColor::operator=( const TQColor &c )
{
if ( !globals_init )
initGlobalColors();
d.argb = c.d.argb;
d.d32.pix = c.d.d32.pix;
return *this;
}
/*!
\fn bool TQColor::isValid() const
Returns FALSE if the color is invalid, i.e. it was constructed using the
default constructor; otherwise returns TRUE.
*/
/*!
\internal
*/
bool TQColor::isDirty() const
{
if ( colormodel == d8 ) {
return d.d8.dirty;
} else {
return d.d32.probablyDirty();
}
}
/*!
Returns the name of the color in the format "#RRGGBB", i.e. a "#"
character followed by three two-digit hexadecimal numbers.
\sa setNamedColor()
*/
TQString TQColor::name() const
{
#ifndef TQT_NO_SPRINTF
TQString s;
s.sprintf( "#%02x%02x%02x", red(), green(), blue() );
return s;
#else
char s[20];
sprintf( s, "#%02x%02x%02x", red(), green(), blue() );
return TQString(s);
#endif
}
static int hex2int( TQChar hexchar )
{
int v;
if ( hexchar.isDigit() )
v = hexchar.digitValue();
else if ( hexchar >= 'A' && hexchar <= 'F' )
v = hexchar.cell() - 'A' + 10;
else if ( hexchar >= 'a' && hexchar <= 'f' )
v = hexchar.cell() - 'a' + 10;
else
v = -1;
return v;
}
/*!
Sets the RGB value to \a name, which may be in one of these
formats:
\list
\i #RGB (each of R, G and B is a single hex digit)
\i #RRGGBB
\i #RRRGGGBBB
\i #RRRRGGGGBBBB
\i A name from the X color database (rgb.txt) (e.g.
"steelblue" or "gainsboro"). These color names also work
under Windows.
\endlist
The color is invalid if \a name cannot be parsed.
*/
void TQColor::setNamedColor( const TQString &name )
{
if ( name.isEmpty() ) {
d.argb = 0;
if ( colormodel == d8 ) {
d.d8.invalid = TRUE;
} else {
d.d32.argb = Invalid;
}
} else if ( name[0] == '#' ) {
const TQChar *p = name.tqunicode()+1;
int len = name.length()-1;
int r, g, b;
if ( len == 12 ) {
r = (hex2int(p[0]) << 4) + hex2int(p[1]);
g = (hex2int(p[4]) << 4) + hex2int(p[5]);
b = (hex2int(p[8]) << 4) + hex2int(p[9]);
} else if ( len == 9 ) {
r = (hex2int(p[0]) << 4) + hex2int(p[1]);
g = (hex2int(p[3]) << 4) + hex2int(p[4]);
b = (hex2int(p[6]) << 4) + hex2int(p[7]);
} else if ( len == 6 ) {
r = (hex2int(p[0]) << 4) + hex2int(p[1]);
g = (hex2int(p[2]) << 4) + hex2int(p[3]);
b = (hex2int(p[4]) << 4) + hex2int(p[5]);
} else if ( len == 3 ) {
r = (hex2int(p[0]) << 4) + hex2int(p[0]);
g = (hex2int(p[1]) << 4) + hex2int(p[1]);
b = (hex2int(p[2]) << 4) + hex2int(p[2]);
} else {
r = g = b = -1;
}
if ( (uint)r > 255 || (uint)g > 255 || (uint)b > 255 ) {
d.d32.argb = Invalid;
d.d32.pix = Dirt;
#if defined(TQT_CHECK_RANGE)
qWarning( "TQColor::setNamedColor: could not parse color '%s'",
name.local8Bit().data() );
#endif
} else {
setRgb( r, g, b );
}
} else {
setSystemNamedColor( name );
}
}
#undef max
#undef min
/*!
\fn void TQColor::getHsv( int &h, int &s, int &v ) const
\obsolete
*/
/*! \fn void TQColor::getHsv( int *h, int *s, int *v ) const
Returns the current RGB value as HSV. The contents of the \a h, \a
s and \a v pointers are set to the HSV values. If any of the three
pointers are null, the function does nothing.
The hue (which \a h points to) is set to -1 if the color is
achromatic.
\warning Colors are stored internally as RGB values, so getHSv()
may return slightly different values to those set by setHsv().
\sa setHsv(), rgb()
*/
/*! \obsolete Use getHsv() instead.
*/
void TQColor::hsv( int *h, int *s, int *v ) const
{
if ( !h || !s || !v )
return;
int r = tqRed(d.argb);
int g = tqGreen(d.argb);
int b = tqBlue(d.argb);
uint max = r; // maximum RGB component
int whatmax = 0; // r=>0, g=>1, b=>2
if ( (uint)g > max ) {
max = g;
whatmax = 1;
}
if ( (uint)b > max ) {
max = b;
whatmax = 2;
}
uint min = r; // find minimum value
if ( (uint)g < min ) min = g;
if ( (uint)b < min ) min = b;
int delta = max-min;
*v = max; // calc value
*s = max ? (510*delta+max)/(2*max) : 0;
if ( *s == 0 ) {
*h = -1; // undefined hue
} else {
switch ( whatmax ) {
case 0: // red is max component
if ( g >= b )
*h = (120*(g-b)+delta)/(2*delta);
else
*h = (120*(g-b+delta)+delta)/(2*delta) + 300;
break;
case 1: // green is max component
if ( b > r )
*h = 120 + (120*(b-r)+delta)/(2*delta);
else
*h = 60 + (120*(b-r+delta)+delta)/(2*delta);
break;
case 2: // blue is max component
if ( r > g )
*h = 240 + (120*(r-g)+delta)/(2*delta);
else
*h = 180 + (120*(r-g+delta)+delta)/(2*delta);
break;
}
}
}
/*!
Sets a HSV color value. \a h is the hue, \a s is the saturation
and \a v is the value of the HSV color.
If \a s or \a v are not in the range 0-255, or \a h is < -1, the
color is not changed.
\warning Colors are stored internally as RGB values, so getHSv()
may return slightly different values to those set by setHsv().
\sa hsv(), setRgb()
*/
void TQColor::setHsv( int h, int s, int v )
{
if ( h < -1 || (uint)s > 255 || (uint)v > 255 ) {
#if defined(TQT_CHECK_RANGE)
qWarning( "TQColor::setHsv: HSV parameters out of range" );
#endif
return;
}
int r=v, g=v, b=v;
if ( s == 0 || h == -1 ) { // achromatic case
// Ignore
} else { // chromatic case
if ( (uint)h >= 360 )
h %= 360;
uint f = h%60;
h /= 60;
uint p = (uint)(2*v*(255-s)+255)/510;
uint q, t;
if ( h&1 ) {
q = (uint)(2*v*(15300-s*f)+15300)/30600;
switch( h ) {
case 1: r=(int)q; g=(int)v, b=(int)p; break;
case 3: r=(int)p; g=(int)q, b=(int)v; break;
case 5: r=(int)v; g=(int)p, b=(int)q; break;
}
} else {
t = (uint)(2*v*(15300-(s*(60-f)))+15300)/30600;
switch( h ) {
case 0: r=(int)v; g=(int)t, b=(int)p; break;
case 2: r=(int)p; g=(int)v, b=(int)t; break;
case 4: r=(int)t; g=(int)p, b=(int)v; break;
}
}
}
setRgb( r, g, b );
}
/*!
\fn TQRgb TQColor::rgb() const
Returns the RGB value.
The return type \e TQRgb is equivalent to \c unsigned \c int.
For an invalid color, the alpha value of the returned color is
unspecified.
\sa setRgb(), hsv(), tqRed(), tqBlue(), tqGreen(), isValid()
*/
/*! \fn void TQColor::getRgb( int *r, int *g, int *b ) const
Sets the contents pointed to by \a r, \a g and \a b to the red,
green and blue components of the RGB value respectively. The value
range for a component is 0..255.
\sa rgb(), setRgb(), getHsv()
*/
/*! \obsolete Use getRgb() instead */
void TQColor::rgb( int *r, int *g, int *b ) const
{
*r = tqRed(d.argb);
*g = tqGreen(d.argb);
*b = tqBlue(d.argb);
}
/*!
Sets the RGB value to \a r, \a g, \a b. The arguments, \a r, \a g
and \a b must all be in the range 0..255. If any of them are
outside the legal range, the color is not changed.
\sa rgb(), setHsv()
*/
void TQColor::setRgb( int r, int g, int b )
{
if ( (uint)r > 255 || (uint)g > 255 || (uint)b > 255 ) {
#if defined(TQT_CHECK_RANGE)
qWarning( "TQColor::setRgb: RGB parameter(s) out of range" );
#endif
return;
}
d.argb = tqRgb( r, g, b );
if ( colormodel == d8 ) {
d.d8.invalid = FALSE;
d.d8.direct = FALSE;
d.d8.dirty = TRUE;
} else {
d.d32.pix = Dirt;
}
}
/*!
\overload
Sets the RGB value to \a rgb.
The type \e TQRgb is equivalent to \c unsigned \c int.
\sa rgb(), setHsv()
*/
void TQColor::setRgb( TQRgb rgb )
{
d.argb = rgb;
if ( colormodel == d8 ) {
d.d8.invalid = FALSE;
d.d8.direct = FALSE;
d.d8.dirty = TRUE;
} else {
d.d32.pix = Dirt;
}
}
/*!
\fn int TQColor::red() const
Returns the R (red) component of the RGB value.
*/
/*!
\fn int TQColor::green() const
Returns the G (green) component of the RGB value.
*/
/*!
\fn int TQColor::blue() const
Returns the B (blue) component of the RGB value.
*/
/*!
Returns a lighter (or darker) color, but does not change this
object.
Returns a lighter color if \a factor is greater than 100. Setting
\a factor to 150 returns a color that is 50% brighter.
Returns a darker color if \a factor is less than 100. We recommend
using dark() for this purpose. If \a factor is 0 or negative, the
return value is unspecified.
(This function converts the current RGB color to HSV, multiplies V
by \a factor, and converts the result back to RGB.)
\sa dark()
*/
TQColor TQColor::light( int factor ) const
{
if ( factor <= 0 ) // invalid lightness factor
return *this;
else if ( factor < 100 ) // makes color darker
return dark( 10000/factor );
int h, s, v;
hsv( &h, &s, &v );
v = (factor*v)/100;
if ( v > 255 ) { // overflow
s -= v-255; // adjust saturation
if ( s < 0 )
s = 0;
v = 255;
}
TQColor c;
c.setHsv( h, s, v );
return c;
}
/*!
Returns a darker (or lighter) color, but does not change this
object.
Returns a darker color if \a factor is greater than 100. Setting
\a factor to 300 returns a color that has one-third the
brightness.
Returns a lighter color if \a factor is less than 100. We
recommend using lighter() for this purpose. If \a factor is 0 or
negative, the return value is unspecified.
(This function converts the current RGB color to HSV, divides V by
\a factor and converts back to RGB.)
\sa light()
*/
TQColor TQColor::dark( int factor ) const
{
if ( factor <= 0 ) // invalid darkness factor
return *this;
else if ( factor < 100 ) // makes color lighter
return light( 10000/factor );
int h, s, v;
hsv( &h, &s, &v );
v = (v*100)/factor;
TQColor c;
c.setHsv( h, s, v );
return c;
}
/*!
\fn bool TQColor::operator==( const TQColor &c ) const
Returns TRUE if this color has the same RGB value as \a c;
otherwise returns FALSE.
*/
/*!
\fn bool TQColor::operator!=( const TQColor &c ) const
Returns TRUE if this color has a different RGB value from \a c;
otherwise returns FALSE.
*/
/*!
Returns the pixel value.
This value is used by the underlying window system to refer to a
color. It can be thought of as an index into the display
hardware's color table, but the value is an arbitrary 32-bit
value.
\sa alloc()
*/
uint TQColor::pixel() const
{
if ( isDirty() )
return ((TQColor*)this)->alloc();
else if ( colormodel == d8 )
#ifdef TQ_WS_WIN
// since d.d8.pix is uchar we have to use the PALETTEINDEX
// macro to get the respective palette entry index.
return (0x01000000 | (int)(short)(d.d8.pix));
#else
return d.d8.pix;
#endif
else
return d.d32.pix;
}
/*!
\fn TQStringList TQColor::colorNames()
Returns a TQStringList containing the color names TQt knows about.
*/
/*****************************************************************************
TQColor stream functions
*****************************************************************************/
#ifndef TQT_NO_DATASTREAM
/*!
\relates TQColor
Writes a color object, \a c to the stream, \a s.
\sa \link datastreamformat.html Format of the TQDataStream operators \endlink
*/
TQDataStream &operator<<( TQDataStream &s, const TQColor &c )
{
TQ_UINT32 p = (TQ_UINT32)c.rgb();
if ( s.version() == 1 ) // Swap red and blue
p = ((p << 16) & 0xff0000) | ((p >> 16) & 0xff) | (p & 0xff00ff00);
return s << p;
}
/*!
\relates TQColor
Reads a color object, \a c, from the stream, \a s.
\sa \link datastreamformat.html Format of the TQDataStream operators \endlink
*/
TQDataStream &operator>>( TQDataStream &s, TQColor &c )
{
TQ_UINT32 p;
s >> p;
if ( s.version() == 1 ) // Swap red and blue
p = ((p << 16) & 0xff0000) | ((p >> 16) & 0xff) | (p & 0xff00ff00);
c.setRgb( p );
return s;
}
#endif
/*****************************************************************************
TQColor global functions (documentation only)
*****************************************************************************/
/*!
\fn int tqRed( TQRgb rgb )
\relates TQColor
Returns the red component of the RGB triplet \a rgb.
\sa tqRgb(), TQColor::red()
*/
/*!
\fn int tqGreen( TQRgb rgb )
\relates TQColor
Returns the green component of the RGB triplet \a rgb.
\sa tqRgb(), TQColor::green()
*/
/*!
\fn int tqBlue( TQRgb rgb )
\relates TQColor
Returns the blue component of the RGB triplet \a rgb.
\sa tqRgb(), TQColor::blue()
*/
/*!
\fn int tqAlpha( TQRgb rgba )
\relates TQColor
Returns the alpha component of the RGBA quadruplet \a rgba.
*/
/*!
\fn TQRgb tqRgb( int r, int g, int b )
\relates TQColor
Returns the RGB triplet \a (r,g,b).
The return type TQRgb is equivalent to \c unsigned \c int.
\sa tqRgba(), tqRed(), tqGreen(), tqBlue()
*/
/*!
\fn TQRgb tqRgba( int r, int g, int b, int a )
\relates TQColor
Returns the RGBA quadruplet \a (r,g,b,a).
The return type TQRgba is equivalent to \c unsigned \c int.
\sa tqRgb(), tqRed(), tqGreen(), tqBlue()
*/
/*!
\fn int tqGray( int r, int g, int b )
\relates TQColor
Returns a gray value 0..255 from the (\a r, \a g, \a b) triplet.
The gray value is calculated using the formula (r*11 + g*16 +
b*5)/32.
*/
/*!
\overload int tqGray( tqRgb rgb )
\relates TQColor
Returns a gray value 0..255 from the given \a rgb colour.
*/
#endif // USE_QT4
|