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
|
/*
* Color functions
*
* Copyright 1993 Alexandre Julliard
* Copyright 1996 Alex Korobka
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "color.h"
#include "wine/debug.h"
#include "palette.h"
#include "windef.h"
WINE_DEFAULT_DEBUG_CHANNEL(palette);
/***********************************************************************
* System color space.
*
* First 10 and last 10 colors in COLOR_sysPalette are
* "guarded". RealizePalette changes only the rest of colorcells. For
* currently inactive window it changes only DC palette mappings.
*/
PALETTEENTRY *COLOR_sysPal = NULL; /* current system palette */
int COLOR_gapStart = 256;
int COLOR_gapEnd = -1;
int COLOR_gapFilled = 0;
int COLOR_max = 256;
const PALETTEENTRY COLOR_sysPalTemplate[NB_RESERVED_COLORS] =
{
/* first 10 entries in the system palette */
/* red green blue flags */
{ 0x00, 0x00, 0x00, PC_SYS_USED },
{ 0x80, 0x00, 0x00, PC_SYS_USED },
{ 0x00, 0x80, 0x00, PC_SYS_USED },
{ 0x80, 0x80, 0x00, PC_SYS_USED },
{ 0x00, 0x00, 0x80, PC_SYS_USED },
{ 0x80, 0x00, 0x80, PC_SYS_USED },
{ 0x00, 0x80, 0x80, PC_SYS_USED },
{ 0xc0, 0xc0, 0xc0, PC_SYS_USED },
{ 0xc0, 0xdc, 0xc0, PC_SYS_USED },
{ 0xa6, 0xca, 0xf0, PC_SYS_USED },
/* ... c_min/2 dynamic colorcells */
/* ... gap (for sparse palettes) */
/* ... c_min/2 dynamic colorcells */
{ 0xff, 0xfb, 0xf0, PC_SYS_USED },
{ 0xa0, 0xa0, 0xa4, PC_SYS_USED },
{ 0x80, 0x80, 0x80, PC_SYS_USED },
{ 0xff, 0x00, 0x00, PC_SYS_USED },
{ 0x00, 0xff, 0x00, PC_SYS_USED },
{ 0xff, 0xff, 0x00, PC_SYS_USED },
{ 0x00, 0x00, 0xff, PC_SYS_USED },
{ 0xff, 0x00, 0xff, PC_SYS_USED },
{ 0x00, 0xff, 0xff, PC_SYS_USED },
{ 0xff, 0xff, 0xff, PC_SYS_USED } /* last 10 */
};
/***********************************************************************
* COLOR_GetSystemPaletteTemplate
*/
const PALETTEENTRY* COLOR_GetSystemPaletteTemplate(void)
{
return COLOR_sysPalTemplate;
}
/***********************************************************************
* COLOR_GetSystemPaletteEntry
*/
COLORREF COLOR_GetSystemPaletteEntry(UINT i)
{
return *(COLORREF*)(COLOR_sysPal + i) & 0x00ffffff;
}
/***********************************************************************
* COLOR_IsSolid
*
* Check whether 'color' can be represented with a solid color.
*/
BOOL COLOR_IsSolid( COLORREF color )
{
int i;
const PALETTEENTRY *pEntry = COLOR_sysPal;
if (color & 0xff000000) return TRUE; /* indexed color */
if (!color || (color == 0xffffff)) return TRUE; /* black or white */
for (i = 0; i < 256 ; i++, pEntry++)
{
if( i < COLOR_gapStart || i > COLOR_gapEnd )
if ((GetRValue(color) == pEntry->peRed) &&
(GetGValue(color) == pEntry->peGreen) &&
(GetBValue(color) == pEntry->peBlue)) return TRUE;
}
return FALSE;
}
/***********************************************************************
* COLOR_PaletteLookupPixel
*/
int COLOR_PaletteLookupPixel( PALETTEENTRY* palPalEntry, int size,
int* mapping, COLORREF col, BOOL skipReserved )
{
int i, best = 0, diff = 0x7fffffff;
int r,g,b;
for( i = 0; i < size && diff ; i++ )
{
if( !(palPalEntry[i].peFlags & PC_SYS_USED) ||
(skipReserved && palPalEntry[i].peFlags & PC_SYS_RESERVED) )
continue;
r = palPalEntry[i].peRed - GetRValue(col);
g = palPalEntry[i].peGreen - GetGValue(col);
b = palPalEntry[i].peBlue - GetBValue(col);
r = r*r + g*g + b*b;
if( r < diff ) { best = i; diff = r; }
}
return (mapping) ? mapping[best] : best;
}
/***********************************************************************
* COLOR_PaletteLookupExactIndex
*/
int COLOR_PaletteLookupExactIndex( PALETTEENTRY* palPalEntry, int size,
COLORREF col )
{
int i;
BYTE r = GetRValue(col), g = GetGValue(col), b = GetBValue(col);
for( i = 0; i < size; i++ )
{
if( palPalEntry[i].peFlags & PC_SYS_USED ) /* skips gap */
if( palPalEntry[i].peRed == r &&
palPalEntry[i].peGreen == g &&
palPalEntry[i].peBlue == b )
return i;
}
return -1;
}
/***********************************************************************
* COLOR_LookupNearestColor
*/
COLORREF COLOR_LookupNearestColor( PALETTEENTRY* palPalEntry, int size, COLORREF color )
{
unsigned char spec_type = color >> 24;
int i;
/* we need logical palette for PALETTERGB and PALETTEINDEX colorrefs */
if( spec_type == 2 ) /* PALETTERGB */
color = *(COLORREF*)
(palPalEntry + COLOR_PaletteLookupPixel(palPalEntry,size,NULL,color,FALSE));
else if( spec_type == 1 ) /* PALETTEINDEX */
{
if( (i = color & 0x0000ffff) >= size )
{
WARN("RGB(%lx) : idx %d is out of bounds, assuming NULL\n", color, i);
color = *(COLORREF*)palPalEntry;
}
else color = *(COLORREF*)(palPalEntry + i);
}
color &= 0x00ffffff;
return (0x00ffffff & *(COLORREF*)
(COLOR_sysPal + COLOR_PaletteLookupPixel(COLOR_sysPal, 256, NULL, color, FALSE)));
}
|
