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1 | /* -copyright- |
2 | #-# Copyright © 2021 Eric Bina, Dave Black, TJ Phan, | |
3 | #-# Vincent Renardias, Willem Vermin | |
4 | #-# | |
5 | #-# Permission is hereby granted, free of charge, to any person | |
6 | #-# obtaining a copy of this software and associated documentation | |
7 | #-# files (the “Software”), to deal in the Software without | |
8 | #-# restriction, including without limitation the rights to use, | |
9 | #-# copy, modify, merge, publish, distribute, sublicense, and/or | |
10 | #-# sell copies of the Software, and to permit persons to whom | |
11 | #-# the Software is furnished to do so, subject to the following | |
12 | #-# conditions: | |
13 | #-# | |
14 | #-# The above copyright notice and this permission notice shall | |
15 | #-# be included in all copies or substantial portions of the Software. | |
16 | #-# | |
17 | #-# THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, | |
18 | #-# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES | |
19 | #-# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
20 | #-# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT | |
21 | #-# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, | |
22 | #-# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
23 | #-# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
24 | #-# OTHER DEALINGS IN THE SOFTWARE. | |
25 | #-# | |
26 | */ | |
27 | #include <stdio.h> | |
28 | #include <string.h> | |
29 | #include <stdlib.h> | |
30 | #include <assert.h> | |
31 | #include "ixpm.h" | |
32 | #include "debug.h" | |
33 | #include "utils.h" | |
34 | // from the xpm package: | |
35 | static void xpmCreatePixmapFromImage( | |
36 | Display *display, | |
37 | Drawable d, | |
38 | XImage *ximage, | |
39 | Pixmap *pixmap_return) | |
40 | { | |
41 | GC gc; | |
42 | XGCValues values; | |
43 | ||
44 | *pixmap_return = XCreatePixmap(display, d, ximage->width, | |
45 | ximage->height, ximage->depth); | |
46 | /* set fg and bg in case we have an XYBitmap */ | |
47 | values.foreground = 1; | |
48 | values.background = 0; | |
49 | gc = XCreateGC(display, *pixmap_return, | |
50 | GCForeground | GCBackground, &values); | |
51 | ||
52 | XPutImage(display, *pixmap_return, gc, ximage, 0, 0, 0, 0, | |
53 | ximage->width, ximage->height); | |
54 | ||
55 | XFreeGC(display, gc); | |
56 | } | |
57 | ||
58 | void paintit(XImage *img, long int color) | |
59 | { | |
60 | int x,y; | |
61 | for (y=0; y<img->height; y++) | |
62 | for (x=0; x<img->width; x++) | |
63 | { | |
64 | XPutPixel(img, x,y,color); | |
65 | } | |
66 | } | |
67 | ||
68 | ||
69 | // reverse characters in string, characters taken in chunks of l | |
70 | // if you know what I mean | |
71 | static void strrevert(char*s, size_t l) | |
72 | { | |
73 | assert(l>0); | |
74 | size_t n = strlen(s)/l; | |
75 | size_t i; | |
76 | char *c = (char *)malloc(l*sizeof(*c)); | |
77 | char *a = s; | |
78 | char *b = s+strlen(s)-l; | |
79 | for (i=0; i<n/2; i++) | |
80 | { | |
81 | strncpy(c,a,l); | |
82 | strncpy(a,b,l); | |
83 | strncpy(b,c,l); | |
84 | a+=l; | |
85 | b-=l; | |
86 | } | |
87 | free(c); | |
88 | } | |
89 | ||
90 | // | |
91 | // equal to XpmCreatePixmapFromData, with extra flags: | |
92 | // flop: if 1, reverse the data horizontally | |
93 | // Extra: 0xff000000 is added to the pixmap data | |
94 | // | |
95 | int iXpmCreatePixmapFromData(Display *display, Drawable d, | |
96 | const char *data[], Pixmap *p, Pixmap *s, XpmAttributes *attr, int flop) | |
97 | { | |
98 | int rc, lines, i, ncolors, height, w; | |
99 | char **idata; | |
100 | ||
101 | sscanf(data[0],"%*s %d %d %d", &height, &ncolors, &w); | |
102 | lines = height+ncolors+1; | |
103 | assert(lines>0); | |
104 | idata = (char **)malloc(lines*sizeof(*idata)); | |
105 | for (i=0; i<lines; i++) | |
106 | idata[i] = strdup(data[i]); | |
107 | if(flop) | |
108 | // flop the image data | |
109 | for (i=1+ncolors; i<lines; i++) | |
110 | strrevert(idata[i],w); | |
111 | ||
112 | XImage *ximage,*shapeimage; | |
113 | rc = XpmCreateImageFromData(display,idata,&ximage,&shapeimage,attr); | |
114 | if (rc != 0) | |
115 | { | |
116 | I("rc from XpmCreateImageFromData: "); | |
117 | switch (rc) | |
118 | { | |
119 | case 1: | |
120 | printf("XpmColorError\n"); | |
121 | for (i=0; i<lines; i++) | |
122 | printf("\"%s\",\n",idata[i]); | |
123 | break; | |
124 | case -1: | |
125 | printf("XpmOpenFailed\n"); | |
126 | break; | |
127 | case -2: | |
128 | printf("XpmFileInvalid\n"); | |
129 | break; | |
130 | case -3: | |
131 | printf("XpmNoMemory: maybe issue with width of data: w=%d\n",w); | |
132 | break; | |
133 | case -4: | |
134 | printf("XpmColorFailed\n"); | |
135 | for (i=0; i<lines; i++) | |
136 | printf("\"%s\",\n",idata[i]); | |
137 | break; | |
138 | default: | |
139 | printf("%d\n",rc); | |
140 | break; | |
141 | } | |
142 | printf("exiting\n"); | |
143 | fflush(NULL); | |
144 | abort(); | |
145 | } | |
146 | XAddPixel(ximage,0xff000000); | |
147 | if(p) | |
148 | xpmCreatePixmapFromImage(display, d, ximage, p); | |
149 | if(s) | |
150 | xpmCreatePixmapFromImage(display, d, shapeimage, s); | |
151 | XDestroyImage(ximage); | |
152 | XDestroyImage(shapeimage); | |
153 | for(i=0; i<lines; i++) free(idata[i]); | |
154 | free(idata); | |
155 | return rc; | |
156 | } | |
157 | ||
158 | // given xpmdata **data, add the non-transparent pixels to Region r | |
159 | Region regionfromxpm(const char **data, int flop) | |
160 | { | |
161 | int w,h,nc,n; | |
162 | Region r = XCreateRegion(); | |
163 | // width, height, #colors, $chars to code color | |
164 | sscanf(*data,"%d %d %d %d",&w,&h,&nc,&n); | |
165 | // find color "None": | |
166 | int i; | |
167 | char *code = (char *)""; | |
168 | int offset = nc + 1; | |
169 | for(i=1; i<=nc; i++) | |
170 | { | |
171 | char s[100]; | |
172 | P("%s\n",data[i]); | |
173 | sscanf(data[i]+n,"%*s %100s",s); | |
174 | P("%s\n",s); | |
175 | if(!strcasecmp(s,"None")) | |
176 | { | |
177 | code = strndup(data[i],n); | |
178 | break; | |
179 | } | |
180 | } | |
181 | XRectangle rect; | |
182 | rect.width = 1; | |
183 | rect.height = 1; | |
184 | int y; | |
185 | for (y=0; y<h; y++) | |
186 | { | |
187 | int x; | |
188 | char*s = strdup(data[y+offset]); | |
189 | if(flop) | |
190 | strrevert(s,n); | |
191 | for(x=0; x<w; x++) | |
192 | { | |
193 | if (strncmp(s+n*x,code,n)) | |
194 | { | |
195 | rect.x = x; | |
196 | rect.y = y; | |
197 | XUnionRectWithRegion(&rect,r,r); | |
198 | } | |
199 | } | |
200 | free(s); | |
201 | } | |
202 | free(code); | |
203 | return r; | |
204 | } | |
205 | ||
206 | /* | |
207 | * converts xpm data to bitmap | |
208 | * xpm: input xpm data | |
209 | * bitsreturn: output bitmap, allocated by this function | |
210 | * wreturn: width of bitmap | |
211 | * hreturn: height of bitmap | |
212 | * lreturn: length of bitmap | |
213 | * | |
214 | * Return value: 1: OK, 0: not OK. | |
215 | * BUGS: this code has not been tested on a big endian system | |
216 | */ | |
217 | int xpmtobits(char *xpm[],unsigned char **bitsreturn, int *wreturn, int *hreturn, int *lreturn) | |
218 | { | |
219 | int nc,cpp,w,h; | |
220 | ||
221 | unsigned char *bits = (unsigned char*) malloc(sizeof(unsigned char)*1); | |
222 | if (sscanf(xpm[0],"%d %d %d %d",&w,&h,&nc,&cpp)!=4) | |
223 | return 0; | |
224 | if(cpp <=0 || w<0 || h<0 || nc<0) | |
225 | return 0; | |
226 | *wreturn = w; | |
227 | *hreturn = h; | |
228 | int l = ((int)w + 7)/8; // # chars needed for this w | |
229 | *lreturn = l*h; | |
230 | // l*h+1: we do not want allocate 0 bytes | |
231 | bits = (unsigned char*) realloc(bits,sizeof(unsigned char)*(l*h+1)); | |
232 | *bitsreturn = bits; | |
233 | int i; | |
234 | for(i=0; i<l*h; i++) | |
235 | bits[i] = 0; | |
236 | ||
237 | char *code = (char *)malloc(sizeof(char)*cpp); | |
238 | for (i=0; i<cpp; i++) | |
239 | code[i] = ' '; | |
240 | ||
241 | int offset = nc + 1; | |
242 | for(i=1; i<=nc; i++) | |
243 | { | |
244 | char s[100]; | |
245 | if (strlen(xpm[i]) > (size_t)cpp + 6) | |
246 | { | |
247 | sscanf(xpm[i]+cpp,"%*s %100s",s); | |
248 | if(!strcasecmp(s,"none")) | |
249 | { | |
250 | free(code); | |
251 | code = strndup(xpm[i],cpp); | |
252 | break; | |
253 | } | |
254 | } | |
255 | } | |
256 | int y; | |
257 | unsigned char c = 0; | |
258 | int j = 0; | |
259 | if (is_little_endian()) | |
260 | for (y=0; y<h; y++) // little endian | |
261 | { | |
262 | int x,k=0; | |
263 | const char *s = xpm[y+offset]; | |
264 | int l = strlen(s); | |
265 | for(x=0; x<w; x++) | |
266 | { | |
267 | c >>= 1; | |
268 | if (cpp*x + cpp <= l) | |
269 | { | |
270 | if (strncmp(s+cpp*x,code,cpp)) | |
271 | c |= 0x80; | |
272 | } | |
273 | k++; | |
274 | if (k == 8) | |
275 | { | |
276 | bits[j++] = c; | |
277 | k = 0; | |
278 | } | |
279 | } | |
280 | if (k) | |
281 | bits[j++] = c>>(8-k); | |
282 | } | |
283 | else | |
284 | for (y=0; y<h; y++) // big endian NOT tested | |
285 | { | |
286 | int x,k=0; | |
287 | const char *s = xpm[y+offset]; | |
288 | int l = strlen(s); | |
289 | for(x=0; x<w; x++) | |
290 | { | |
291 | c <<= 1; | |
292 | if (cpp*x + cpp <= l) | |
293 | { | |
294 | if (strncmp(s+cpp*x,code,cpp)) | |
295 | c |= 0x01; | |
296 | } | |
297 | k++; | |
298 | if (k == 8) | |
299 | { | |
300 | bits[j++] = c; | |
301 | k = 0; | |
302 | } | |
303 | } | |
304 | if (k) | |
305 | bits[j++] = c<<(8-k); | |
306 | } | |
307 | ||
308 | free(code); | |
309 | return 1; | |
310 | } | |
311 | ||
312 | ||
313 | // given color and xmpdata **data of a monocolored picture like: | |
314 | // | |
315 | //XPM_TYPE *snow06_xpm[] = { | |
316 | ///* columns rows colors chars-per-pixel */ | |
317 | //"3 3 2 1 ", | |
318 | //" c none", | |
319 | //". c black", | |
320 | ///* pixels */ | |
321 | //". .", | |
322 | //" . ", | |
323 | //". ." | |
324 | //}; | |
325 | // change the second color to color and put the result in out. | |
326 | // lines will become the number of lines in out, comes in handy | |
327 | // when wanteing to free out. | |
328 | void xpm_set_color(char **data, char ***out, int *lines, const char *color) | |
329 | { | |
330 | int n; | |
331 | sscanf(data[0],"%*d %d",&n); | |
332 | assert(n+3>0); | |
333 | *out = (char**)malloc(sizeof(char *)*(n+3)); | |
334 | char **x = *out; | |
335 | int j; | |
336 | for (j=0; j<2; j++) | |
337 | x[j] = strdup(data[j]); | |
338 | x[2] = (char *)malloc(5+strlen(color)); | |
339 | x[2][0] = '\0'; | |
340 | strcat(x[2],". c "); | |
341 | strcat(x[2],color); | |
342 | P("c: [%s]\n",x[2]); | |
343 | ||
344 | for (j=3; j<n+3; j++) | |
345 | { | |
346 | x[j] = strdup(data[j]); | |
347 | P("%d %s\n",j,x[j]); | |
348 | } | |
349 | *lines = n+3; | |
350 | } | |
351 | ||
352 | void xpm_destroy(char **data) | |
353 | { | |
354 | int h,nc; | |
355 | sscanf(data[0],"%*d %d %d",&h,&nc); | |
356 | int i; | |
357 | for (i=0; i<h+nc+1; i++) | |
358 | free(data[i]); | |
359 | free(data); | |
360 | } | |
361 | ||
362 | void xpm_print(char **xpm) | |
363 | { | |
364 | int w,h,nc; | |
365 | sscanf(xpm[0],"%d %d %d",&w,&h,&nc); | |
366 | int i,j; | |
367 | printf("%s\n",xpm[0]); | |
368 | for (i=1; i<1+nc; i++) | |
369 | printf("%s\n",xpm[i]); | |
370 | for (i=0; i<2*w+2; i++) | |
371 | printf("_"); | |
372 | printf("\n"); | |
373 | for (i=0; i<h; i++) | |
374 | { | |
375 | printf("|"); | |
376 | for (j=0; j<w; j++) | |
377 | printf("%2c",xpm[i+nc+1][j]); | |
378 | printf("|"); | |
379 | printf("\n"); | |
380 | } | |
381 | for (i=0; i<2*w+2; i++) | |
382 | printf("-"); | |
383 | printf("\n"); | |
384 | } | |
385 |