]>
Dogcows Code - chaz/openbox/blob - color.c
c53a366e9eb30cfb1de481ff64bf0db4b24f460e
1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
3 color.c for the Openbox window manager
4 Copyright (c) 2003 Ben Jansens
5 Copyright (c) 2003 Derek Foreman
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 See the COPYING file for a copy of the GNU General Public License.
25 #include <X11/Xutil.h>
28 void RrColorAllocateGC(RrColor
*in
)
32 gcv
.foreground
= in
->pixel
;
33 gcv
.cap_style
= CapProjecting
;
34 in
->gc
= XCreateGC(RrDisplay(in
->inst
),
35 RrRootWindow(in
->inst
),
36 GCForeground
| GCCapStyle
, &gcv
);
39 RrColor
*RrColorParse(const RrInstance
*inst
, gchar
*colorname
)
43 g_assert(colorname
!= NULL
);
44 /* get rgb values from colorname */
50 if (!XParseColor(RrDisplay(inst
), RrColormap(inst
), colorname
, &xcol
)) {
51 g_warning("unable to parse color '%s'", colorname
);
54 return RrColorNew(inst
, xcol
.red
>> 8, xcol
.green
>> 8, xcol
.blue
>> 8);
57 /*#define NO_COLOR_CACHE*/
62 RrColor
*RrColorNew(const RrInstance
*inst
, gint r
, gint g
, gint b
)
64 /* this should be replaced with something far cooler */
69 key
= (r
<< 24) + (g
<< 16) + (b
<< 8);
70 #ifndef NO_COLOR_CACHE
71 if ((out
= g_hash_table_lookup(RrColorHash(inst
), &key
))) {
75 xcol
.red
= (r
<< 8) | r
;
76 xcol
.green
= (g
<< 8) | g
;
77 xcol
.blue
= (b
<< 8) | b
;
78 if (XAllocColor(RrDisplay(inst
), RrColormap(inst
), &xcol
)) {
79 out
= g_new(RrColor
, 1);
81 out
->r
= xcol
.red
>> 8;
82 out
->g
= xcol
.green
>> 8;
83 out
->b
= xcol
.blue
>> 8;
85 out
->pixel
= xcol
.pixel
;
91 #ifndef NO_COLOR_CACHE
92 g_hash_table_insert(RrColorHash(inst
), &out
->key
, out
);
99 void RrColorFree(RrColor
*c
)
102 if (--c
->refcount
< 1) {
103 #ifndef NO_COLOR_CACHE
104 g_assert(g_hash_table_lookup(RrColorHash(c
->inst
), &c
->key
));
105 g_hash_table_remove(RrColorHash(c
->inst
), &c
->key
);
107 if (c
->pixel
) XFreeColors(RrDisplay(c
->inst
), RrColormap(c
->inst
),
109 if (c
->gc
) XFreeGC(RrDisplay(c
->inst
), c
->gc
);
115 void RrReduceDepth(const RrInstance
*inst
, RrPixel32
*data
, XImage
*im
)
119 RrPixel32
*p32
= (RrPixel32
*) im
->data
;
120 RrPixel16
*p16
= (RrPixel16
*) im
->data
;
121 guchar
*p8
= (guchar
*)im
->data
;
122 switch (im
->bits_per_pixel
) {
124 if ((RrRedOffset(inst
) != RrDefaultRedOffset
) ||
125 (RrBlueOffset(inst
) != RrDefaultBlueOffset
) ||
126 (RrGreenOffset(inst
) != RrDefaultGreenOffset
)) {
127 for (y
= 0; y
< im
->height
; y
++) {
128 for (x
= 0; x
< im
->width
; x
++) {
129 r
= (data
[x
] >> RrDefaultRedOffset
) & 0xFF;
130 g
= (data
[x
] >> RrDefaultGreenOffset
) & 0xFF;
131 b
= (data
[x
] >> RrDefaultBlueOffset
) & 0xFF;
132 p32
[x
] = (r
<< RrRedOffset(inst
))
133 + (g
<< RrGreenOffset(inst
))
134 + (b
<< RrBlueOffset(inst
));
139 } else im
->data
= (gchar
*) data
;
142 for (y
= 0; y
< im
->height
; y
++) {
143 for (x
= 0; x
< im
->width
; x
++) {
144 r
= (data
[x
] >> RrDefaultRedOffset
) & 0xFF;
145 r
= r
>> RrRedShift(inst
);
146 g
= (data
[x
] >> RrDefaultGreenOffset
) & 0xFF;
147 g
= g
>> RrGreenShift(inst
);
148 b
= (data
[x
] >> RrDefaultBlueOffset
) & 0xFF;
149 b
= b
>> RrBlueShift(inst
);
150 p16
[x
] = (r
<< RrRedOffset(inst
))
151 + (g
<< RrGreenOffset(inst
))
152 + (b
<< RrBlueOffset(inst
));
155 p16
+= im
->bytes_per_line
/2;
159 g_assert(RrVisual(inst
)->class != TrueColor
);
160 for (y
= 0; y
< im
->height
; y
++) {
161 for (x
= 0; x
< im
->width
; x
++) {
162 p8
[x
] = RrPickColor(inst
,
163 data
[x
] >> RrDefaultRedOffset
,
164 data
[x
] >> RrDefaultGreenOffset
,
165 data
[x
] >> RrDefaultBlueOffset
)->pixel
;
168 p8
+= im
->bytes_per_line
;
172 g_warning("your bit depth is currently unhandled\n");
176 XColor
*RrPickColor(const RrInstance
*inst
, gint r
, gint g
, gint b
)
178 r
= (r
& 0xff) >> (8-RrPseudoBPC(inst
));
179 g
= (g
& 0xff) >> (8-RrPseudoBPC(inst
));
180 b
= (b
& 0xff) >> (8-RrPseudoBPC(inst
));
181 return &RrPseudoColors(inst
)[(r
<< (2*RrPseudoBPC(inst
))) +
182 (g
<< (1*RrPseudoBPC(inst
))) +
186 static void swap_byte_order(XImage
*im
)
191 for (y
= 0; y
< im
->height
; ++y
) {
192 for (x
= 0; x
< im
->height
; ++x
) {
193 gchar
*c
= &im
->data
[di
+ x
* im
->bits_per_pixel
/ 8];
196 switch (im
->bits_per_pixel
) {
209 g_warning("Your bit depth is currently unhandled");
212 di
+= im
->bytes_per_line
;
215 if (im
->byte_order
== LSBFirst
)
216 im
->byte_order
= MSBFirst
;
218 im
->byte_order
= LSBFirst
;
221 void RrIncreaseDepth(const RrInstance
*inst
, RrPixel32
*data
, XImage
*im
)
225 RrPixel32
*p32
= (RrPixel32
*) im
->data
;
226 RrPixel16
*p16
= (RrPixel16
*) im
->data
;
227 guchar
*p8
= (guchar
*)im
->data
;
229 if (im
->byte_order
!= LSBFirst
)
232 switch (im
->bits_per_pixel
) {
234 for (y
= 0; y
< im
->height
; y
++) {
235 for (x
= 0; x
< im
->width
; x
++) {
236 r
= (p32
[x
] >> RrRedOffset(inst
)) & 0xff;
237 g
= (p32
[x
] >> RrGreenOffset(inst
)) & 0xff;
238 b
= (p32
[x
] >> RrBlueOffset(inst
)) & 0xff;
239 data
[x
] = (r
<< RrDefaultRedOffset
)
240 + (g
<< RrDefaultGreenOffset
)
241 + (b
<< RrDefaultBlueOffset
)
242 + (0xff << RrDefaultAlphaOffset
);
245 p32
+= im
->bytes_per_line
/4;
249 for (y
= 0; y
< im
->height
; y
++) {
250 for (x
= 0; x
< im
->width
; x
++) {
251 r
= (p16
[x
] & RrRedMask(inst
)) >>
254 g
= (p16
[x
] & RrGreenMask(inst
)) >>
255 RrGreenOffset(inst
) <<
257 b
= (p16
[x
] & RrBlueMask(inst
)) >>
258 RrBlueOffset(inst
) <<
260 data
[x
] = (r
<< RrDefaultRedOffset
)
261 + (g
<< RrDefaultGreenOffset
)
262 + (b
<< RrDefaultBlueOffset
)
263 + (0xff << RrDefaultAlphaOffset
);
266 p16
+= im
->bytes_per_line
/2;
270 g_warning("this image bit depth is currently unhandled");
273 for (y
= 0; y
< im
->height
; y
++) {
274 for (x
= 0; x
< im
->width
; x
++) {
275 if (!(((p8
[x
/ 8]) >> (x
% 8)) & 0x1))
276 data
[x
] = 0xff << RrDefaultAlphaOffset
; /* black */
278 data
[x
] = 0xffffffff; /* white */
281 p8
+= im
->bytes_per_line
;
285 g_warning("this image bit depth is currently unhandled");
289 gint
RrColorRed(const RrColor
*c
)
294 gint
RrColorGreen(const RrColor
*c
)
299 gint
RrColorBlue(const RrColor
*c
)
304 gulong
RrColorPixel(const RrColor
*c
)
309 GC
RrColorGC(RrColor
*c
)
312 RrColorAllocateGC(c
);
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