1 |
greg |
1.1 |
/* Copyright 1990 Regents of the University of California */ |
2 |
|
|
|
3 |
|
|
#ifndef lint |
4 |
|
|
static char SCCSid[] = "$SunId$ LBL"; |
5 |
|
|
#endif |
6 |
|
|
|
7 |
|
|
/* |
8 |
|
|
* x11raster.c - routines to handle images for X windows. |
9 |
|
|
* |
10 |
|
|
* 2/18/88 |
11 |
|
|
*/ |
12 |
|
|
|
13 |
|
|
#include <stdio.h> |
14 |
|
|
#include <X11/Xlib.h> |
15 |
|
|
#include <X11/Xutil.h> |
16 |
|
|
|
17 |
|
|
#include "x11raster.h" |
18 |
|
|
|
19 |
|
|
|
20 |
|
|
XRASTER * |
21 |
|
|
make_raster(disp, scrn, depth, data, width, height, bm_pad) |
22 |
|
|
Display *disp; |
23 |
|
|
int scrn; |
24 |
|
|
int depth; |
25 |
|
|
char *data; |
26 |
|
|
int width, height; |
27 |
|
|
int bm_pad; |
28 |
|
|
{ |
29 |
|
|
register XRASTER *xr; |
30 |
|
|
XVisualInfo ourvinfo; |
31 |
|
|
/* Pick appropriate Visual */ |
32 |
|
|
if (depth == 1) { |
33 |
|
|
ourvinfo.visual = DefaultVisual(disp,scrn); |
34 |
|
|
} else if (depth == 8) { |
35 |
|
|
if (!XMatchVisualInfo(disp,scrn,8,PseudoColor,&ourvinfo)) |
36 |
|
|
return(NULL); |
37 |
greg |
1.3 |
} else if (depth == 24) { |
38 |
greg |
1.4 |
if (!XMatchVisualInfo(disp,scrn,24,TrueColor,&ourvinfo) && |
39 |
|
|
!XMatchVisualInfo(disp,scrn,24,DirectColor,&ourvinfo)) |
40 |
greg |
1.1 |
return(NULL); |
41 |
|
|
} else |
42 |
|
|
return(NULL); |
43 |
|
|
if ((xr = (XRASTER *)calloc(1, sizeof(XRASTER))) == NULL) |
44 |
|
|
return(NULL); |
45 |
|
|
xr->disp = disp; |
46 |
|
|
xr->screen = scrn; |
47 |
|
|
xr->visual = ourvinfo.visual; |
48 |
|
|
xr->image = XCreateImage(disp,ourvinfo.visual,depth, |
49 |
greg |
1.3 |
depth==1 ? XYBitmap : ZPixmap, |
50 |
|
|
0,data,width,height,bm_pad,0); |
51 |
greg |
2.4 |
xr->image->bitmap_bit_order = MSBFirst; |
52 |
|
|
xr->image->byte_order = MSBFirst; |
53 |
|
|
xr->image->red_mask = 0xff; |
54 |
|
|
xr->image->green_mask = 0xff00; |
55 |
|
|
xr->image->blue_mask = 0xff0000; |
56 |
greg |
1.4 |
if (xr->image->bits_per_pixel == 32) { |
57 |
|
|
xr->image->bytes_per_line = xr->image->bytes_per_line*24/32; |
58 |
|
|
xr->image->bits_per_pixel = 24; |
59 |
greg |
2.4 |
xr->image->bitmap_unit = 8; |
60 |
|
|
while (xr->image->bytes_per_line % (bm_pad/8)) |
61 |
|
|
xr->image->bytes_per_line++; |
62 |
greg |
1.4 |
} |
63 |
greg |
1.1 |
xr->gc = XCreateGC(disp, RootWindow(disp,scrn), 0, 0); |
64 |
|
|
XSetState(disp, xr->gc, BlackPixel(disp,scrn), WhitePixel(disp,scrn), |
65 |
greg |
1.2 |
GXcopy, AllPlanes); |
66 |
greg |
1.1 |
return(xr); |
67 |
|
|
} |
68 |
|
|
|
69 |
|
|
|
70 |
|
|
int |
71 |
|
|
init_rcolors(xr, rmap, gmap, bmap) /* initialize colors */ |
72 |
|
|
register XRASTER *xr; |
73 |
greg |
1.3 |
int rmap[256], gmap[256], bmap[256]; |
74 |
greg |
1.1 |
{ |
75 |
|
|
register unsigned char *p; |
76 |
|
|
register int i; |
77 |
|
|
|
78 |
|
|
if (xr->image->depth != 8 || xr->ncolors != 0) |
79 |
|
|
return(xr->ncolors); |
80 |
|
|
xr->pmap = (short *)malloc(256*sizeof(short)); |
81 |
|
|
if (xr->pmap == NULL) |
82 |
|
|
return(0); |
83 |
|
|
xr->cdefs = (XColor *)malloc(256*sizeof(XColor)); |
84 |
|
|
if (xr->cdefs == NULL) |
85 |
|
|
return(0); |
86 |
|
|
for (i = 0; i < 256; i++) |
87 |
|
|
xr->pmap[i] = -1; |
88 |
|
|
for (p = (unsigned char *)xr->image->data, |
89 |
|
|
i = xr->image->width*xr->image->height; |
90 |
|
|
i--; p++) |
91 |
|
|
if (xr->pmap[*p] == -1) { |
92 |
|
|
xr->cdefs[xr->ncolors].red = rmap[*p] << 8; |
93 |
|
|
xr->cdefs[xr->ncolors].green = gmap[*p] << 8; |
94 |
|
|
xr->cdefs[xr->ncolors].blue = bmap[*p] << 8; |
95 |
|
|
xr->cdefs[xr->ncolors].pixel = *p; |
96 |
|
|
xr->cdefs[xr->ncolors].flags = DoRed|DoGreen|DoBlue; |
97 |
|
|
xr->pmap[*p] = xr->ncolors++; |
98 |
|
|
} |
99 |
|
|
xr->cdefs = (XColor *)realloc((char *)xr->cdefs, |
100 |
|
|
xr->ncolors*sizeof(XColor)); |
101 |
|
|
if (xr->cdefs == NULL) |
102 |
|
|
return(0); |
103 |
|
|
return(xr->ncolors); |
104 |
|
|
} |
105 |
|
|
|
106 |
greg |
1.3 |
Colormap |
107 |
|
|
newcmap(disp, scrn, w, vis) /* get colormap and fix b & w */ |
108 |
|
|
Display *disp; |
109 |
|
|
int scrn; |
110 |
|
|
Window w; |
111 |
|
|
Visual *vis; |
112 |
|
|
{ |
113 |
|
|
XColor thiscolor; |
114 |
|
|
unsigned long *pixels; |
115 |
|
|
Colormap cmap; |
116 |
|
|
int n; |
117 |
|
|
register int i, j; |
118 |
greg |
1.1 |
|
119 |
greg |
1.3 |
cmap = XCreateColormap(disp, w, vis, AllocNone); |
120 |
|
|
if (cmap == 0) |
121 |
|
|
return(0); |
122 |
|
|
pixels=(unsigned long *)malloc(vis->map_entries*sizeof(unsigned long)); |
123 |
|
|
if (pixels == NULL) |
124 |
|
|
return(0); |
125 |
|
|
for (n = vis->map_entries; n > 0; n--) |
126 |
|
|
if (XAllocColorCells(disp, cmap, 0, NULL, 0, pixels, n) != 0) |
127 |
|
|
break; |
128 |
|
|
if (n == 0) |
129 |
|
|
return(0); |
130 |
|
|
/* reset black and white */ |
131 |
|
|
for (i = 0; i < n; i++) { |
132 |
|
|
if (pixels[i] != BlackPixel(disp,scrn) |
133 |
|
|
&& pixels[i] != WhitePixel(disp,scrn)) |
134 |
|
|
continue; |
135 |
|
|
thiscolor.pixel = pixels[i]; |
136 |
|
|
thiscolor.flags = DoRed|DoGreen|DoBlue; |
137 |
|
|
XQueryColor(disp, DefaultColormap(disp,scrn), &thiscolor); |
138 |
|
|
XStoreColor(disp, cmap, &thiscolor); |
139 |
|
|
for (j = i; j+1 < n; j++) |
140 |
|
|
pixels[j] = pixels[j+1]; |
141 |
|
|
n--; |
142 |
|
|
i--; |
143 |
|
|
} |
144 |
|
|
XFreeColors(disp, cmap, pixels, n, 0); |
145 |
|
|
free((char *)pixels); |
146 |
|
|
return(cmap); |
147 |
|
|
} |
148 |
|
|
|
149 |
|
|
|
150 |
greg |
1.1 |
unsigned long * |
151 |
|
|
map_rcolors(xr, w) /* get and assign pixels */ |
152 |
|
|
register XRASTER *xr; |
153 |
|
|
Window w; |
154 |
|
|
{ |
155 |
|
|
register int i; |
156 |
|
|
register unsigned char *p; |
157 |
|
|
|
158 |
|
|
if (xr->ncolors == 0 || xr->image->depth != 8) |
159 |
|
|
return(NULL); |
160 |
|
|
if (xr->pixels != NULL) |
161 |
|
|
return(xr->pixels); |
162 |
|
|
xr->pixels = (unsigned long *)malloc(xr->ncolors*sizeof(unsigned long)); |
163 |
|
|
if (xr->pixels == NULL) |
164 |
|
|
return(NULL); |
165 |
greg |
1.3 |
if (xr->visual == DefaultVisual(xr->disp, xr->screen)) |
166 |
greg |
1.1 |
xr->cmap = DefaultColormap(xr->disp, xr->screen); |
167 |
greg |
1.3 |
else |
168 |
|
|
xr->cmap = newcmap(xr->disp, xr->screen, w, xr->visual); |
169 |
|
|
while (XAllocColorCells(xr->disp, xr->cmap, 0, |
170 |
|
|
NULL, 0, xr->pixels, xr->ncolors) == 0) |
171 |
greg |
1.1 |
if (xr->cmap == DefaultColormap(xr->disp, xr->screen)) |
172 |
greg |
1.3 |
xr->cmap = newcmap(xr->disp, xr->screen, w, xr->visual); |
173 |
|
|
else { |
174 |
|
|
free((char *)xr->pixels); |
175 |
|
|
xr->pixels = NULL; |
176 |
|
|
return(NULL); |
177 |
|
|
} |
178 |
greg |
1.1 |
for (i = 0; i < xr->ncolors; i++) |
179 |
|
|
if (xr->pmap[xr->pixels[i]] == -1) |
180 |
|
|
break; |
181 |
|
|
if (i < xr->ncolors) { /* different pixels */ |
182 |
|
|
for (p = (unsigned char *)xr->image->data, |
183 |
|
|
i = xr->image->width*xr->image->height; |
184 |
|
|
i--; p++) |
185 |
|
|
*p = xr->pixels[xr->pmap[*p]]; |
186 |
|
|
for (i = 0; i < 256; i++) |
187 |
|
|
xr->pmap[i] = -1; |
188 |
|
|
for (i = 0; i < xr->ncolors; i++) { |
189 |
|
|
xr->cdefs[i].pixel = xr->pixels[i]; |
190 |
|
|
xr->pmap[xr->pixels[i]] = i; |
191 |
|
|
} |
192 |
|
|
free_rpixmap(xr); /* Pixmap invalid */ |
193 |
|
|
} |
194 |
|
|
XStoreColors(xr->disp, xr->cmap, xr->cdefs, xr->ncolors); |
195 |
|
|
XSetWindowColormap(xr->disp, w, xr->cmap); |
196 |
|
|
return(xr->pixels); |
197 |
|
|
} |
198 |
|
|
|
199 |
|
|
|
200 |
|
|
Pixmap |
201 |
|
|
make_rpixmap(xr) /* make pixmap for raster */ |
202 |
|
|
register XRASTER *xr; |
203 |
|
|
{ |
204 |
|
|
Pixmap pm; |
205 |
|
|
|
206 |
|
|
if (xr->pm != 0) |
207 |
|
|
return(xr->pm); |
208 |
|
|
pm = XCreatePixmap(xr->disp, RootWindow(xr->disp, xr->screen), |
209 |
greg |
1.3 |
xr->image->width, xr->image->height, |
210 |
|
|
DisplayPlanes(xr->disp, xr->screen)); |
211 |
greg |
1.1 |
if (pm == 0) |
212 |
|
|
return(0); |
213 |
|
|
put_raster(pm, 0, 0, xr); |
214 |
|
|
return(xr->pm = pm); |
215 |
greg |
1.2 |
} |
216 |
|
|
|
217 |
|
|
|
218 |
|
|
patch_raster(d, xsrc, ysrc, xdst, ydst, width, height, xr) /* redraw */ |
219 |
|
|
Drawable d; |
220 |
|
|
int xsrc, ysrc, xdst, ydst; |
221 |
|
|
int width, height; |
222 |
|
|
register XRASTER *xr; |
223 |
|
|
{ |
224 |
|
|
if (xsrc >= xr->image->width || ysrc >= xr->image->height) |
225 |
|
|
return; |
226 |
|
|
if (xsrc < 0) { |
227 |
|
|
xdst -= xsrc; width += xsrc; |
228 |
|
|
xsrc = 0; |
229 |
|
|
} |
230 |
|
|
if (ysrc < 0) { |
231 |
|
|
ydst -= ysrc; height += ysrc; |
232 |
|
|
ysrc = 0; |
233 |
|
|
} |
234 |
|
|
if (width <= 0 || height <= 0) |
235 |
|
|
return; |
236 |
|
|
if (xsrc + width > xr->image->width) |
237 |
|
|
width = xr->image->width - xsrc; |
238 |
|
|
if (ysrc + height > xr->image->height) |
239 |
|
|
height = xr->image->height - ysrc; |
240 |
|
|
|
241 |
|
|
if (xr->pm == 0) |
242 |
|
|
XPutImage(xr->disp, d, xr->gc, xr->image, xsrc, ysrc, |
243 |
|
|
xdst, ydst, width, height); |
244 |
|
|
else |
245 |
|
|
XCopyArea(xr->disp, xr->pm, d, xr->gc, xsrc, ysrc, |
246 |
|
|
width, height, xdst, ydst); |
247 |
greg |
1.1 |
} |
248 |
|
|
|
249 |
|
|
|
250 |
|
|
unmap_rcolors(xr) /* free colors */ |
251 |
|
|
register XRASTER *xr; |
252 |
|
|
{ |
253 |
|
|
if (xr->pixels == NULL) |
254 |
|
|
return; |
255 |
|
|
XFreeColors(xr->disp, xr->cmap, xr->pixels, xr->ncolors, 0); |
256 |
|
|
if (xr->cmap != DefaultColormap(xr->disp, xr->screen)) |
257 |
|
|
XFreeColormap(xr->disp, xr->cmap); |
258 |
|
|
free((char *)xr->pixels); |
259 |
|
|
xr->pixels = NULL; |
260 |
|
|
} |
261 |
|
|
|
262 |
|
|
|
263 |
|
|
free_rpixmap(xr) /* release Pixmap */ |
264 |
|
|
register XRASTER *xr; |
265 |
|
|
{ |
266 |
|
|
if (xr->pm == 0) |
267 |
|
|
return; |
268 |
|
|
XFreePixmap(xr->disp, xr->pm); |
269 |
|
|
xr->pm = 0; |
270 |
|
|
} |
271 |
|
|
|
272 |
|
|
|
273 |
|
|
free_raster(xr) /* free raster data */ |
274 |
|
|
register XRASTER *xr; |
275 |
|
|
{ |
276 |
|
|
free_rpixmap(xr); |
277 |
|
|
if (xr->ncolors > 0) { |
278 |
|
|
unmap_rcolors(xr); |
279 |
|
|
free((char *)xr->pmap); |
280 |
|
|
free((char *)xr->cdefs); |
281 |
|
|
} |
282 |
|
|
XDestroyImage(xr->image); |
283 |
|
|
XFreeGC(xr->disp, xr->gc); |
284 |
|
|
free((char *)xr); |
285 |
|
|
} |