2 24c02865 2005-01-04 devnull * the actual viewer that handles screen stuff
5 24c02865 2005-01-04 devnull #include <u.h>
6 24c02865 2005-01-04 devnull #include <libc.h>
7 24c02865 2005-01-04 devnull #include <draw.h>
8 24c02865 2005-01-04 devnull #include <cursor.h>
9 24c02865 2005-01-04 devnull #include <event.h>
10 24c02865 2005-01-04 devnull #include <bio.h>
11 24c02865 2005-01-04 devnull #include <plumb.h>
12 24c02865 2005-01-04 devnull #include <ctype.h>
13 24c02865 2005-01-04 devnull #include <keyboard.h>
14 24c02865 2005-01-04 devnull #include "page.h"
16 24c02865 2005-01-04 devnull Document *doc;
17 24c02865 2005-01-04 devnull Image *im;
18 24c02865 2005-01-04 devnull int page;
19 24c02865 2005-01-04 devnull int upside = 0;
20 24c02865 2005-01-04 devnull int showbottom = 0; /* on the next showpage, move the image so the bottom is visible. */
22 24c02865 2005-01-04 devnull Rectangle ulrange; /* the upper left corner of the image must be in this rectangle */
23 24c02865 2005-01-04 devnull Point ul; /* the upper left corner of the image is at this point on the screen */
25 24c02865 2005-01-04 devnull Point pclip(Point, Rectangle);
26 24c02865 2005-01-04 devnull Rectangle mkrange(Rectangle screenr, Rectangle imr);
27 24c02865 2005-01-04 devnull void redraw(Image*);
29 24c02865 2005-01-04 devnull Cursor reading={
30 24c02865 2005-01-04 devnull {-1, -1},
31 24c02865 2005-01-04 devnull {0xff, 0x80, 0xff, 0x80, 0xff, 0x00, 0xfe, 0x00,
32 24c02865 2005-01-04 devnull 0xff, 0x00, 0xff, 0x80, 0xff, 0xc0, 0xef, 0xe0,
33 24c02865 2005-01-04 devnull 0xc7, 0xf0, 0x03, 0xf0, 0x01, 0xe0, 0x00, 0xc0,
34 24c02865 2005-01-04 devnull 0x03, 0xff, 0x03, 0xff, 0x03, 0xff, 0x03, 0xff, },
35 24c02865 2005-01-04 devnull {0x00, 0x00, 0x7f, 0x00, 0x7e, 0x00, 0x7c, 0x00,
36 24c02865 2005-01-04 devnull 0x7e, 0x00, 0x7f, 0x00, 0x6f, 0x80, 0x47, 0xc0,
37 24c02865 2005-01-04 devnull 0x03, 0xe0, 0x01, 0xf0, 0x00, 0xe0, 0x00, 0x40,
38 24c02865 2005-01-04 devnull 0x00, 0x00, 0x01, 0xb6, 0x01, 0xb6, 0x00, 0x00, }
41 24c02865 2005-01-04 devnull Cursor query = {
43 24c02865 2005-01-04 devnull {0x0f, 0xf0, 0x1f, 0xf8, 0x3f, 0xfc, 0x7f, 0xfe,
44 24c02865 2005-01-04 devnull 0x7c, 0x7e, 0x78, 0x7e, 0x00, 0xfc, 0x01, 0xf8,
45 24c02865 2005-01-04 devnull 0x03, 0xf0, 0x07, 0xe0, 0x07, 0xc0, 0x07, 0xc0,
46 24c02865 2005-01-04 devnull 0x07, 0xc0, 0x07, 0xc0, 0x07, 0xc0, 0x07, 0xc0, },
47 24c02865 2005-01-04 devnull {0x00, 0x00, 0x0f, 0xf0, 0x1f, 0xf8, 0x3c, 0x3c,
48 24c02865 2005-01-04 devnull 0x38, 0x1c, 0x00, 0x3c, 0x00, 0x78, 0x00, 0xf0,
49 24c02865 2005-01-04 devnull 0x01, 0xe0, 0x03, 0xc0, 0x03, 0x80, 0x03, 0x80,
50 24c02865 2005-01-04 devnull 0x00, 0x00, 0x03, 0x80, 0x03, 0x80, 0x00, 0x00, }
54 24c02865 2005-01-04 devnull Left = 1,
55 24c02865 2005-01-04 devnull Middle = 2,
56 24c02865 2005-01-04 devnull Right = 4,
58 24c02865 2005-01-04 devnull RMenu = 3,
62 24c02865 2005-01-04 devnull unhide(void)
64 24c02865 2005-01-04 devnull static int wctl = -1;
66 24c02865 2005-01-04 devnull if(wctl < 0)
67 24c02865 2005-01-04 devnull wctl = open("/dev/wctl", OWRITE);
68 24c02865 2005-01-04 devnull if(wctl < 0)
71 24c02865 2005-01-04 devnull write(wctl, "unhide", 6);
75 24c02865 2005-01-04 devnull max(int a, int b)
77 24c02865 2005-01-04 devnull return a > b ? a : b;
81 24c02865 2005-01-04 devnull min(int a, int b)
83 24c02865 2005-01-04 devnull return a < b ? a : b;
88 24c02865 2005-01-04 devnull menugen(int n)
90 24c02865 2005-01-04 devnull static char menustr[32];
94 24c02865 2005-01-04 devnull if(n == doc->npage)
95 24c02865 2005-01-04 devnull return "exit";
96 24c02865 2005-01-04 devnull if(n > doc->npage)
97 24c02865 2005-01-04 devnull return nil;
99 24c02865 2005-01-04 devnull if(reverse)
100 24c02865 2005-01-04 devnull n = doc->npage-1-n;
102 24c02865 2005-01-04 devnull p = doc->pagename(doc, n);
103 24c02865 2005-01-04 devnull len = (sizeof menustr)-2;
105 24c02865 2005-01-04 devnull if(strlen(p) > len && strrchr(p, '/'))
106 24c02865 2005-01-04 devnull p = strrchr(p, '/')+1;
107 24c02865 2005-01-04 devnull if(strlen(p) > len)
108 24c02865 2005-01-04 devnull p = p+strlen(p)-len;
110 24c02865 2005-01-04 devnull strcpy(menustr+1, p);
111 24c02865 2005-01-04 devnull if(page == n)
112 24c02865 2005-01-04 devnull menustr[0] = '>';
114 24c02865 2005-01-04 devnull menustr[0] = ' ';
115 24c02865 2005-01-04 devnull return menustr;
119 24c02865 2005-01-04 devnull showpage(int page, Menu *m)
121 24c02865 2005-01-04 devnull Image *tmp;
123 24c02865 2005-01-04 devnull if(doc->fwdonly)
124 24c02865 2005-01-04 devnull m->lasthit = 0; /* this page */
126 24c02865 2005-01-04 devnull m->lasthit = reverse ? doc->npage-1-page : page;
128 24c02865 2005-01-04 devnull esetcursor(&reading);
129 24c02865 2005-01-04 devnull freeimage(im);
130 24c02865 2005-01-04 devnull if((page < 0 || page >= doc->npage) && !doc->fwdonly){
131 24c02865 2005-01-04 devnull im = nil;
134 24c02865 2005-01-04 devnull im = doc->drawpage(doc, page);
135 24c02865 2005-01-04 devnull if(im == nil) {
136 24c02865 2005-01-04 devnull if(doc->fwdonly) /* this is how we know we're out of pages */
137 24c02865 2005-01-04 devnull wexits(0);
139 24c02865 2005-01-04 devnull im = xallocimage(display, Rect(0,0,50,50), GREY1, 1, DBlack);
140 24c02865 2005-01-04 devnull if(im == nil) {
141 24c02865 2005-01-04 devnull fprint(2, "out of memory: %r\n");
142 24c02865 2005-01-04 devnull wexits("memory");
144 24c02865 2005-01-04 devnull string(im, ZP, display->white, ZP, display->defaultfont, "?");
145 24c02865 2005-01-04 devnull }else if(resizing){
146 24c02865 2005-01-04 devnull resize(Dx(im->r), Dy(im->r));
148 24c02865 2005-01-04 devnull if(im->r.min.x > 0 || im->r.min.y > 0) {
149 24c02865 2005-01-04 devnull tmp = xallocimage(display, Rect(0, 0, Dx(im->r), Dy(im->r)), im->chan, 0, DNofill);
150 24c02865 2005-01-04 devnull if(tmp == nil) {
151 24c02865 2005-01-04 devnull fprint(2, "out of memory during showpage: %r\n");
152 24c02865 2005-01-04 devnull wexits("memory");
154 24c02865 2005-01-04 devnull drawop(tmp, tmp->r, im, nil, im->r.min, S);
155 24c02865 2005-01-04 devnull freeimage(im);
156 24c02865 2005-01-04 devnull im = tmp;
159 24c02865 2005-01-04 devnull if(upside)
160 24c02865 2005-01-04 devnull rot180(im);
162 24c02865 2005-01-04 devnull esetcursor(nil);
163 24c02865 2005-01-04 devnull if(showbottom){
164 24c02865 2005-01-04 devnull ul.y = screen->r.max.y - Dy(im->r);
165 24c02865 2005-01-04 devnull showbottom = 0;
168 24c02865 2005-01-04 devnull redraw(screen);
169 24c02865 2005-01-04 devnull flushimage(display, 1);
173 24c02865 2005-01-04 devnull writebitmap(void)
175 24c02865 2005-01-04 devnull char basename[64];
176 24c02865 2005-01-04 devnull char name[64+30];
177 24c02865 2005-01-04 devnull static char result[200];
178 24c02865 2005-01-04 devnull char *p, *q;
181 24c02865 2005-01-04 devnull if(im == nil)
182 24c02865 2005-01-04 devnull return "no image";
184 24c02865 2005-01-04 devnull memset(basename, 0, sizeof basename);
185 24c02865 2005-01-04 devnull if(doc->docname)
186 24c02865 2005-01-04 devnull strncpy(basename, doc->docname, sizeof(basename)-1);
187 24c02865 2005-01-04 devnull else if((p = menugen(page)) && p[0] != '\0')
188 24c02865 2005-01-04 devnull strncpy(basename, p+1, sizeof(basename)-1);
190 24c02865 2005-01-04 devnull if(basename[0]) {
191 24c02865 2005-01-04 devnull if(q = strrchr(basename, '/'))
194 24c02865 2005-01-04 devnull q = basename;
195 24c02865 2005-01-04 devnull if(p = strchr(q, '.'))
198 24c02865 2005-01-04 devnull memset(name, 0, sizeof name);
199 24c02865 2005-01-04 devnull snprint(name, sizeof(name)-1, "%s.%d.bit", q, page+1);
200 24c02865 2005-01-04 devnull if(access(name, 0) >= 0) {
201 24c02865 2005-01-04 devnull strcat(name, "XXXX");
202 24c02865 2005-01-04 devnull mktemp(name);
204 24c02865 2005-01-04 devnull if(access(name, 0) >= 0)
205 24c02865 2005-01-04 devnull return "couldn't think of a name for bitmap";
206 24c02865 2005-01-04 devnull } else {
207 24c02865 2005-01-04 devnull strcpy(name, "bitXXXX");
208 24c02865 2005-01-04 devnull mktemp(name);
209 24c02865 2005-01-04 devnull if(access(name, 0) >= 0)
210 24c02865 2005-01-04 devnull return "couldn't think of a name for bitmap";
213 24c02865 2005-01-04 devnull if((fd = create(name, OWRITE, 0666)) < 0) {
214 24c02865 2005-01-04 devnull snprint(result, sizeof result, "cannot create %s: %r", name);
215 24c02865 2005-01-04 devnull return result;
218 24c02865 2005-01-04 devnull if(writeimage(fd, im, 0) < 0) {
219 24c02865 2005-01-04 devnull snprint(result, sizeof result, "cannot writeimage: %r");
220 24c02865 2005-01-04 devnull close(fd);
221 24c02865 2005-01-04 devnull return result;
223 24c02865 2005-01-04 devnull close(fd);
225 24c02865 2005-01-04 devnull snprint(result, sizeof result, "wrote %s", name);
226 24c02865 2005-01-04 devnull return result;
229 24c02865 2005-01-04 devnull static void translate(Point);
231 24c02865 2005-01-04 devnull static int
232 24c02865 2005-01-04 devnull showdata(Plumbmsg *msg)
234 24c02865 2005-01-04 devnull char *s;
236 24c02865 2005-01-04 devnull s = plumblookup(msg->attr, "action");
237 24c02865 2005-01-04 devnull return s && strcmp(s, "showdata")==0;
240 24c02865 2005-01-04 devnull /* correspond to entries in miditems[] below,
241 24c02865 2005-01-04 devnull * changing one means you need to change
244 24c02865 2005-01-04 devnull Restore = 0,
254 24c02865 2005-01-04 devnull Reverse,
262 24c02865 2005-01-04 devnull viewer(Document *dd)
264 24c02865 2005-01-04 devnull int i, fd, n, oldpage;
265 24c02865 2005-01-04 devnull int nxt;
266 24c02865 2005-01-04 devnull Menu menu, midmenu;
267 24c02865 2005-01-04 devnull Mouse m;
268 24c02865 2005-01-04 devnull Event e;
269 24c02865 2005-01-04 devnull Point dxy, oxy, xy0;
270 24c02865 2005-01-04 devnull Rectangle r;
271 24c02865 2005-01-04 devnull Image *tmp;
272 24c02865 2005-01-04 devnull static char *fwditems[] = { "this page", "next page", "exit", 0 };
273 24c02865 2005-01-04 devnull static char *miditems[] = {
274 24c02865 2005-01-04 devnull "orig size",
275 24c02865 2005-01-04 devnull "zoom in",
276 24c02865 2005-01-04 devnull "fit window",
277 24c02865 2005-01-04 devnull "rotate 90",
278 24c02865 2005-01-04 devnull "upside down",
282 24c02865 2005-01-04 devnull "zerox",
284 24c02865 2005-01-04 devnull "reverse",
285 24c02865 2005-01-04 devnull "discard",
286 24c02865 2005-01-04 devnull "write",
291 24c02865 2005-01-04 devnull char *s;
292 24c02865 2005-01-04 devnull enum { Eplumb = 4 };
293 24c02865 2005-01-04 devnull Plumbmsg *pm;
295 24c02865 2005-01-04 devnull doc = dd; /* save global for menuhit */
296 24c02865 2005-01-04 devnull ul = screen->r.min;
297 24c02865 2005-01-04 devnull einit(Emouse|Ekeyboard);
298 24c02865 2005-01-04 devnull if(doc->addpage != nil)
299 24c02865 2005-01-04 devnull eplumb(Eplumb, "image");
301 24c02865 2005-01-04 devnull esetcursor(&reading);
302 24c02865 2005-01-04 devnull r.min = ZP;
305 24c02865 2005-01-04 devnull * im is a global pointer to the current image.
306 24c02865 2005-01-04 devnull * eventually, i think we will have a layer between
307 24c02865 2005-01-04 devnull * the display routines and the ps/pdf/whatever routines
308 24c02865 2005-01-04 devnull * to perhaps cache and handle images of different
309 24c02865 2005-01-04 devnull * sizes, etc.
312 24c02865 2005-01-04 devnull page = reverse ? doc->npage-1 : 0;
314 24c02865 2005-01-04 devnull if(doc->fwdonly) {
315 24c02865 2005-01-04 devnull menu.item = fwditems;
316 24c02865 2005-01-04 devnull menu.gen = 0;
317 24c02865 2005-01-04 devnull menu.lasthit = 0;
318 24c02865 2005-01-04 devnull } else {
319 24c02865 2005-01-04 devnull menu.item = 0;
320 24c02865 2005-01-04 devnull menu.gen = menugen;
321 24c02865 2005-01-04 devnull menu.lasthit = 0;
324 24c02865 2005-01-04 devnull midmenu.item = miditems;
325 24c02865 2005-01-04 devnull midmenu.gen = 0;
326 24c02865 2005-01-04 devnull midmenu.lasthit = Next;
328 24c02865 2005-01-04 devnull showpage(page, &menu);
329 24c02865 2005-01-04 devnull esetcursor(nil);
331 24c02865 2005-01-04 devnull nxt = 0;
332 24c02865 2005-01-04 devnull for(;;) {
334 24c02865 2005-01-04 devnull * throughout, if doc->fwdonly is set, we restrict the functionality
335 24c02865 2005-01-04 devnull * a fair amount. we don't care about doc->npage anymore, and
336 24c02865 2005-01-04 devnull * all that can be done is select the next page.
338 24c02865 2005-01-04 devnull switch(eread(Emouse|Ekeyboard|Eplumb, &e)){
339 24c02865 2005-01-04 devnull case Ekeyboard:
340 24c02865 2005-01-04 devnull if(e.kbdc <= 0xFF && isdigit(e.kbdc)) {
341 24c02865 2005-01-04 devnull nxt = nxt*10+e.kbdc-'0';
343 24c02865 2005-01-04 devnull } else if(e.kbdc != '\n')
344 24c02865 2005-01-04 devnull nxt = 0;
345 24c02865 2005-01-04 devnull switch(e.kbdc) {
346 24c02865 2005-01-04 devnull case 'r': /* reverse page order */
347 24c02865 2005-01-04 devnull if(doc->fwdonly)
349 24c02865 2005-01-04 devnull reverse = !reverse;
350 24c02865 2005-01-04 devnull menu.lasthit = doc->npage-1-menu.lasthit;
353 24c02865 2005-01-04 devnull * the theory is that if we are reversing the
354 24c02865 2005-01-04 devnull * document order and are on the first or last
355 24c02865 2005-01-04 devnull * page then we're just starting and really want
356 24c02865 2005-01-04 devnull * to view the other end. maybe the if
357 24c02865 2005-01-04 devnull * should be dropped and this should happen always.
359 24c02865 2005-01-04 devnull if(page == 0 || page == doc->npage-1) {
360 24c02865 2005-01-04 devnull page = doc->npage-1-page;
361 24c02865 2005-01-04 devnull showpage(page, &menu);
364 24c02865 2005-01-04 devnull case 'w': /* write bitmap of current screen */
365 24c02865 2005-01-04 devnull esetcursor(&reading);
366 24c02865 2005-01-04 devnull s = writebitmap();
368 24c02865 2005-01-04 devnull string(screen, addpt(screen->r.min, Pt(5,5)), display->black, ZP,
369 24c02865 2005-01-04 devnull display->defaultfont, s);
370 24c02865 2005-01-04 devnull esetcursor(nil);
371 24c02865 2005-01-04 devnull flushimage(display, 1);
373 24c02865 2005-01-04 devnull case 'd': /* remove image from working set */
374 24c02865 2005-01-04 devnull if(doc->rmpage && page < doc->npage) {
375 24c02865 2005-01-04 devnull if(doc->rmpage(doc, page) >= 0) {
376 24c02865 2005-01-04 devnull if(doc->npage < 0)
377 24c02865 2005-01-04 devnull wexits(0);
378 24c02865 2005-01-04 devnull if(page >= doc->npage)
379 24c02865 2005-01-04 devnull page = doc->npage-1;
380 24c02865 2005-01-04 devnull showpage(page, &menu);
384 24c02865 2005-01-04 devnull case 'q':
385 24c02865 2005-01-04 devnull case 0x04: /* ctrl-d */
386 24c02865 2005-01-04 devnull wexits(0);
387 24c02865 2005-01-04 devnull case 'u':
388 24c02865 2005-01-04 devnull if(im==nil)
390 24c02865 2005-01-04 devnull esetcursor(&reading);
391 24c02865 2005-01-04 devnull rot180(im);
392 24c02865 2005-01-04 devnull esetcursor(nil);
393 24c02865 2005-01-04 devnull upside = !upside;
394 24c02865 2005-01-04 devnull redraw(screen);
395 24c02865 2005-01-04 devnull flushimage(display, 1);
397 24c02865 2005-01-04 devnull case '-':
398 24c02865 2005-01-04 devnull case '\b':
399 24c02865 2005-01-04 devnull case Kleft:
400 24c02865 2005-01-04 devnull if(page > 0 && !doc->fwdonly) {
402 24c02865 2005-01-04 devnull showpage(page, &menu);
405 24c02865 2005-01-04 devnull case '\n':
406 24c02865 2005-01-04 devnull if(nxt) {
408 24c02865 2005-01-04 devnull if(nxt >= 0 && nxt < doc->npage && !doc->fwdonly)
409 24c02865 2005-01-04 devnull showpage(page=nxt, &menu);
410 24c02865 2005-01-04 devnull nxt = 0;
413 24c02865 2005-01-04 devnull goto Gotonext;
414 24c02865 2005-01-04 devnull case Kright:
415 24c02865 2005-01-04 devnull case ' ':
416 24c02865 2005-01-04 devnull Gotonext:
417 24c02865 2005-01-04 devnull if(doc->npage && ++page >= doc->npage && !doc->fwdonly)
418 24c02865 2005-01-04 devnull wexits(0);
419 24c02865 2005-01-04 devnull showpage(page, &menu);
423 24c02865 2005-01-04 devnull * The upper y coordinate of the image is at ul.y in screen->r.
424 24c02865 2005-01-04 devnull * Panning up means moving the upper left corner down. If the
425 24c02865 2005-01-04 devnull * upper left corner is currently visible, we need to go back a page.
427 24c02865 2005-01-04 devnull case Kup:
428 24c02865 2005-01-04 devnull if(screen->r.min.y <= ul.y && ul.y < screen->r.max.y){
429 24c02865 2005-01-04 devnull if(page > 0 && !doc->fwdonly){
431 24c02865 2005-01-04 devnull showbottom = 1;
432 24c02865 2005-01-04 devnull showpage(page, &menu);
434 24c02865 2005-01-04 devnull } else {
435 24c02865 2005-01-04 devnull i = Dy(screen->r)/2;
436 24c02865 2005-01-04 devnull if(i > 10)
437 24c02865 2005-01-04 devnull i -= 10;
438 24c02865 2005-01-04 devnull if(i+ul.y > screen->r.min.y)
439 24c02865 2005-01-04 devnull i = screen->r.min.y - ul.y;
440 24c02865 2005-01-04 devnull translate(Pt(0, i));
445 24c02865 2005-01-04 devnull * If the lower y coordinate is on the screen, we go to the next page.
446 24c02865 2005-01-04 devnull * The lower y coordinate is at ul.y + Dy(im->r).
448 24c02865 2005-01-04 devnull case Kdown:
449 24c02865 2005-01-04 devnull i = ul.y + Dy(im->r);
450 24c02865 2005-01-04 devnull if(screen->r.min.y <= i && i <= screen->r.max.y){
451 24c02865 2005-01-04 devnull ul.y = screen->r.min.y;
452 24c02865 2005-01-04 devnull goto Gotonext;
453 24c02865 2005-01-04 devnull } else {
454 24c02865 2005-01-04 devnull i = -Dy(screen->r)/2;
455 24c02865 2005-01-04 devnull if(i < -10)
456 24c02865 2005-01-04 devnull i += 10;
457 24c02865 2005-01-04 devnull if(i+ul.y+Dy(im->r) <= screen->r.max.y)
458 24c02865 2005-01-04 devnull i = screen->r.max.y - Dy(im->r) - ul.y - 1;
459 24c02865 2005-01-04 devnull translate(Pt(0, i));
462 24c02865 2005-01-04 devnull default:
463 24c02865 2005-01-04 devnull esetcursor(&query);
464 24c02865 2005-01-04 devnull sleep(1000);
465 24c02865 2005-01-04 devnull esetcursor(nil);
470 24c02865 2005-01-04 devnull case Emouse:
471 24c02865 2005-01-04 devnull m = e.mouse;
472 24c02865 2005-01-04 devnull switch(m.buttons){
473 24c02865 2005-01-04 devnull case Left:
474 24c02865 2005-01-04 devnull oxy = m.xy;
475 24c02865 2005-01-04 devnull xy0 = oxy;
477 24c02865 2005-01-04 devnull dxy = subpt(m.xy, oxy);
478 24c02865 2005-01-04 devnull oxy = m.xy;
479 24c02865 2005-01-04 devnull translate(dxy);
480 24c02865 2005-01-04 devnull m = emouse();
481 24c02865 2005-01-04 devnull } while(m.buttons == Left);
482 24c02865 2005-01-04 devnull if(m.buttons) {
483 24c02865 2005-01-04 devnull dxy = subpt(xy0, oxy);
484 24c02865 2005-01-04 devnull translate(dxy);
488 24c02865 2005-01-04 devnull case Middle:
489 24c02865 2005-01-04 devnull if(doc->npage == 0)
492 24c02865 2005-01-04 devnull n = emenuhit(Middle, &m, &midmenu);
493 24c02865 2005-01-04 devnull if(n == -1)
495 24c02865 2005-01-04 devnull switch(n){
496 24c02865 2005-01-04 devnull case Next: /* next */
497 24c02865 2005-01-04 devnull if(reverse)
501 24c02865 2005-01-04 devnull if(page < 0) {
502 24c02865 2005-01-04 devnull if(reverse) return;
503 24c02865 2005-01-04 devnull else page = 0;
506 24c02865 2005-01-04 devnull if((page >= doc->npage) && !doc->fwdonly)
509 24c02865 2005-01-04 devnull showpage(page, &menu);
510 24c02865 2005-01-04 devnull nxt = 0;
512 24c02865 2005-01-04 devnull case Prev: /* prev */
513 24c02865 2005-01-04 devnull if(reverse)
517 24c02865 2005-01-04 devnull if(page < 0) {
518 24c02865 2005-01-04 devnull if(reverse) return;
519 24c02865 2005-01-04 devnull else page = 0;
522 24c02865 2005-01-04 devnull if((page >= doc->npage) && !doc->fwdonly && !reverse)
525 24c02865 2005-01-04 devnull showpage(page, &menu);
526 24c02865 2005-01-04 devnull nxt = 0;
528 24c02865 2005-01-04 devnull case Zerox: /* prev */
529 24c02865 2005-01-04 devnull zerox();
531 24c02865 2005-01-04 devnull case Zin: /* zoom in */
533 24c02865 2005-01-04 devnull double delta;
534 24c02865 2005-01-04 devnull Rectangle r;
536 24c02865 2005-01-04 devnull r = egetrect(Middle, &m);
537 24c02865 2005-01-04 devnull if((rectclip(&r, rectaddpt(im->r, ul)) == 0) ||
538 24c02865 2005-01-04 devnull Dx(r) == 0 || Dy(r) == 0)
540 24c02865 2005-01-04 devnull /* use the smaller side to expand */
541 24c02865 2005-01-04 devnull if(Dx(r) < Dy(r))
542 24c02865 2005-01-04 devnull delta = (double)Dx(im->r)/(double)Dx(r);
544 24c02865 2005-01-04 devnull delta = (double)Dy(im->r)/(double)Dy(r);
546 24c02865 2005-01-04 devnull esetcursor(&reading);
547 24c02865 2005-01-04 devnull tmp = xallocimage(display,
548 24c02865 2005-01-04 devnull Rect(0, 0, (int)((double)Dx(im->r)*delta), (int)((double)Dy(im->r)*delta)),
549 24c02865 2005-01-04 devnull im->chan, 0, DBlack);
550 24c02865 2005-01-04 devnull if(tmp == nil) {
551 24c02865 2005-01-04 devnull fprint(2, "out of memory during zoom: %r\n");
552 24c02865 2005-01-04 devnull wexits("memory");
554 24c02865 2005-01-04 devnull resample(im, tmp);
555 24c02865 2005-01-04 devnull freeimage(im);
556 24c02865 2005-01-04 devnull im = tmp;
557 24c02865 2005-01-04 devnull esetcursor(nil);
558 24c02865 2005-01-04 devnull ul = screen->r.min;
559 24c02865 2005-01-04 devnull redraw(screen);
560 24c02865 2005-01-04 devnull flushimage(display, 1);
563 24c02865 2005-01-04 devnull case Fit: /* fit */
565 24c02865 2005-01-04 devnull double delta;
566 24c02865 2005-01-04 devnull Rectangle r;
568 24c02865 2005-01-04 devnull delta = (double)Dx(screen->r)/(double)Dx(im->r);
569 24c02865 2005-01-04 devnull if((double)Dy(im->r)*delta > Dy(screen->r))
570 24c02865 2005-01-04 devnull delta = (double)Dy(screen->r)/(double)Dy(im->r);
572 24c02865 2005-01-04 devnull r = Rect(0, 0, (int)((double)Dx(im->r)*delta), (int)((double)Dy(im->r)*delta));
573 24c02865 2005-01-04 devnull esetcursor(&reading);
574 24c02865 2005-01-04 devnull tmp = xallocimage(display, r, im->chan, 0, DBlack);
575 24c02865 2005-01-04 devnull if(tmp == nil) {
576 24c02865 2005-01-04 devnull fprint(2, "out of memory during fit: %r\n");
577 24c02865 2005-01-04 devnull wexits("memory");
579 24c02865 2005-01-04 devnull resample(im, tmp);
580 24c02865 2005-01-04 devnull freeimage(im);
581 24c02865 2005-01-04 devnull im = tmp;
582 24c02865 2005-01-04 devnull esetcursor(nil);
583 24c02865 2005-01-04 devnull ul = screen->r.min;
584 24c02865 2005-01-04 devnull redraw(screen);
585 24c02865 2005-01-04 devnull flushimage(display, 1);
588 24c02865 2005-01-04 devnull case Rot: /* rotate 90 */
589 24c02865 2005-01-04 devnull esetcursor(&reading);
590 24c02865 2005-01-04 devnull im = rot90(im);
591 24c02865 2005-01-04 devnull esetcursor(nil);
592 24c02865 2005-01-04 devnull redraw(screen);
593 24c02865 2005-01-04 devnull flushimage(display, 1);
595 24c02865 2005-01-04 devnull case Upside: /* upside-down */
596 24c02865 2005-01-04 devnull if(im==nil)
598 24c02865 2005-01-04 devnull esetcursor(&reading);
599 24c02865 2005-01-04 devnull rot180(im);
600 24c02865 2005-01-04 devnull esetcursor(nil);
601 24c02865 2005-01-04 devnull upside = !upside;
602 24c02865 2005-01-04 devnull redraw(screen);
603 24c02865 2005-01-04 devnull flushimage(display, 1);
605 24c02865 2005-01-04 devnull case Restore: /* restore */
606 24c02865 2005-01-04 devnull showpage(page, &menu);
608 24c02865 2005-01-04 devnull case Reverse: /* reverse */
609 24c02865 2005-01-04 devnull if(doc->fwdonly)
611 24c02865 2005-01-04 devnull reverse = !reverse;
612 24c02865 2005-01-04 devnull menu.lasthit = doc->npage-1-menu.lasthit;
614 24c02865 2005-01-04 devnull if(page == 0 || page == doc->npage-1) {
615 24c02865 2005-01-04 devnull page = doc->npage-1-page;
616 24c02865 2005-01-04 devnull showpage(page, &menu);
619 24c02865 2005-01-04 devnull case Write: /* write */
620 24c02865 2005-01-04 devnull esetcursor(&reading);
621 24c02865 2005-01-04 devnull s = writebitmap();
623 24c02865 2005-01-04 devnull string(screen, addpt(screen->r.min, Pt(5,5)), display->black, ZP,
624 24c02865 2005-01-04 devnull display->defaultfont, s);
625 24c02865 2005-01-04 devnull esetcursor(nil);
626 24c02865 2005-01-04 devnull flushimage(display, 1);
628 24c02865 2005-01-04 devnull case Del: /* delete */
629 24c02865 2005-01-04 devnull if(doc->rmpage && page < doc->npage) {
630 24c02865 2005-01-04 devnull if(doc->rmpage(doc, page) >= 0) {
631 24c02865 2005-01-04 devnull if(doc->npage < 0)
632 24c02865 2005-01-04 devnull wexits(0);
633 24c02865 2005-01-04 devnull if(page >= doc->npage)
634 24c02865 2005-01-04 devnull page = doc->npage-1;
635 24c02865 2005-01-04 devnull showpage(page, &menu);
639 24c02865 2005-01-04 devnull case Exit: /* exit */
641 24c02865 2005-01-04 devnull case Empty1:
642 24c02865 2005-01-04 devnull case Empty2:
643 24c02865 2005-01-04 devnull case Empty3:
650 24c02865 2005-01-04 devnull case Right:
651 24c02865 2005-01-04 devnull if(doc->npage == 0)
654 24c02865 2005-01-04 devnull oldpage = page;
655 24c02865 2005-01-04 devnull n = emenuhit(RMenu, &m, &menu);
656 24c02865 2005-01-04 devnull if(n == -1)
659 24c02865 2005-01-04 devnull if(doc->fwdonly) {
660 24c02865 2005-01-04 devnull switch(n){
661 24c02865 2005-01-04 devnull case 0: /* this page */
663 24c02865 2005-01-04 devnull case 1: /* next page */
664 24c02865 2005-01-04 devnull showpage(++page, &menu);
666 24c02865 2005-01-04 devnull case 2: /* exit */
672 24c02865 2005-01-04 devnull if(n == doc->npage)
675 24c02865 2005-01-04 devnull page = reverse ? doc->npage-1-n : n;
677 24c02865 2005-01-04 devnull if(oldpage != page)
678 24c02865 2005-01-04 devnull showpage(page, &menu);
679 24c02865 2005-01-04 devnull nxt = 0;
684 24c02865 2005-01-04 devnull case Eplumb:
685 24c02865 2005-01-04 devnull pm = e.v;
686 24c02865 2005-01-04 devnull if(pm->ndata <= 0){
687 24c02865 2005-01-04 devnull plumbfree(pm);
690 24c02865 2005-01-04 devnull if(showdata(pm)) {
691 24c02865 2005-01-04 devnull s = estrdup("/tmp/pageplumbXXXXXXX");
692 24c02865 2005-01-04 devnull fd = opentemp(s);
693 24c02865 2005-01-04 devnull write(fd, pm->data, pm->ndata);
694 24c02865 2005-01-04 devnull /* lose fd reference on purpose; the file is open ORCLOSE */
695 24c02865 2005-01-04 devnull } else if(pm->data[0] == '/') {
696 24c02865 2005-01-04 devnull s = estrdup(pm->data);
697 24c02865 2005-01-04 devnull } else {
698 24c02865 2005-01-04 devnull s = emalloc(strlen(pm->wdir)+1+pm->ndata+1);
699 24c02865 2005-01-04 devnull sprint(s, "%s/%s", pm->wdir, pm->data);
700 24c02865 2005-01-04 devnull cleanname(s);
702 24c02865 2005-01-04 devnull if((i = doc->addpage(doc, s)) >= 0) {
703 24c02865 2005-01-04 devnull page = i;
704 24c02865 2005-01-04 devnull unhide();
705 24c02865 2005-01-04 devnull showpage(page, &menu);
707 24c02865 2005-01-04 devnull free(s);
708 24c02865 2005-01-04 devnull plumbfree(pm);
714 24c02865 2005-01-04 devnull Image *gray;
717 24c02865 2005-01-04 devnull * A draw operation that touches only the area contained in bot but not in top.
718 24c02865 2005-01-04 devnull * mp and sp get aligned with bot.min.
720 24c02865 2005-01-04 devnull static void
721 24c02865 2005-01-04 devnull gendrawdiff(Image *dst, Rectangle bot, Rectangle top,
722 24c02865 2005-01-04 devnull Image *src, Point sp, Image *mask, Point mp, int op)
724 24c02865 2005-01-04 devnull Rectangle r;
725 24c02865 2005-01-04 devnull Point origin;
726 24c02865 2005-01-04 devnull Point delta;
728 24c02865 2005-01-04 devnull USED(op);
730 24c02865 2005-01-04 devnull if(Dx(bot)*Dy(bot) == 0)
733 24c02865 2005-01-04 devnull /* no points in bot - top */
734 24c02865 2005-01-04 devnull if(rectinrect(bot, top))
737 24c02865 2005-01-04 devnull /* bot - top ≡ bot */
738 24c02865 2005-01-04 devnull if(Dx(top)*Dy(top)==0 || rectXrect(bot, top)==0){
739 24c02865 2005-01-04 devnull gendrawop(dst, bot, src, sp, mask, mp, op);
743 24c02865 2005-01-04 devnull origin = bot.min;
744 24c02865 2005-01-04 devnull /* split bot into rectangles that don't intersect top */
745 24c02865 2005-01-04 devnull /* left side */
746 24c02865 2005-01-04 devnull if(bot.min.x < top.min.x){
747 24c02865 2005-01-04 devnull r = Rect(bot.min.x, bot.min.y, top.min.x, bot.max.y);
748 24c02865 2005-01-04 devnull delta = subpt(r.min, origin);
749 24c02865 2005-01-04 devnull gendrawop(dst, r, src, addpt(sp, delta), mask, addpt(mp, delta), op);
750 24c02865 2005-01-04 devnull bot.min.x = top.min.x;
753 24c02865 2005-01-04 devnull /* right side */
754 24c02865 2005-01-04 devnull if(bot.max.x > top.max.x){
755 24c02865 2005-01-04 devnull r = Rect(top.max.x, bot.min.y, bot.max.x, bot.max.y);
756 24c02865 2005-01-04 devnull delta = subpt(r.min, origin);
757 24c02865 2005-01-04 devnull gendrawop(dst, r, src, addpt(sp, delta), mask, addpt(mp, delta), op);
758 24c02865 2005-01-04 devnull bot.max.x = top.max.x;
761 24c02865 2005-01-04 devnull /* top */
762 24c02865 2005-01-04 devnull if(bot.min.y < top.min.y){
763 24c02865 2005-01-04 devnull r = Rect(bot.min.x, bot.min.y, bot.max.x, top.min.y);
764 24c02865 2005-01-04 devnull delta = subpt(r.min, origin);
765 24c02865 2005-01-04 devnull gendrawop(dst, r, src, addpt(sp, delta), mask, addpt(mp, delta), op);
766 24c02865 2005-01-04 devnull bot.min.y = top.min.y;
769 24c02865 2005-01-04 devnull /* bottom */
770 24c02865 2005-01-04 devnull if(bot.max.y > top.max.y){
771 24c02865 2005-01-04 devnull r = Rect(bot.min.x, top.max.y, bot.max.x, bot.max.y);
772 24c02865 2005-01-04 devnull delta = subpt(r.min, origin);
773 24c02865 2005-01-04 devnull gendrawop(dst, r, src, addpt(sp, delta), mask, addpt(mp, delta), op);
774 24c02865 2005-01-04 devnull bot.max.y = top.max.y;
778 24c02865 2005-01-04 devnull static void
779 24c02865 2005-01-04 devnull drawdiff(Image *dst, Rectangle bot, Rectangle top, Image *src, Image *mask, Point p, int op)
781 24c02865 2005-01-04 devnull gendrawdiff(dst, bot, top, src, p, mask, p, op);
785 24c02865 2005-01-04 devnull * Translate the image in the window by delta.
787 24c02865 2005-01-04 devnull static void
788 24c02865 2005-01-04 devnull translate(Point delta)
790 24c02865 2005-01-04 devnull Point u;
791 24c02865 2005-01-04 devnull Rectangle r, or;
793 24c02865 2005-01-04 devnull if(im == nil)
796 24c02865 2005-01-04 devnull u = pclip(addpt(ul, delta), ulrange);
797 24c02865 2005-01-04 devnull delta = subpt(u, ul);
798 24c02865 2005-01-04 devnull if(delta.x == 0 && delta.y == 0)
802 24c02865 2005-01-04 devnull * The upper left corner of the image is currently at ul.
803 24c02865 2005-01-04 devnull * We want to move it to u.
805 24c02865 2005-01-04 devnull or = rectaddpt(Rpt(ZP, Pt(Dx(im->r), Dy(im->r))), ul);
806 24c02865 2005-01-04 devnull r = rectaddpt(or, delta);
808 24c02865 2005-01-04 devnull drawop(screen, r, screen, nil, ul, S);
811 24c02865 2005-01-04 devnull /* fill in gray where image used to be but isn't. */
812 24c02865 2005-01-04 devnull drawdiff(screen, insetrect(or, -2), insetrect(r, -2), gray, nil, ZP, S);
814 24c02865 2005-01-04 devnull /* fill in black border */
815 24c02865 2005-01-04 devnull drawdiff(screen, insetrect(r, -2), r, display->black, nil, ZP, S);
817 24c02865 2005-01-04 devnull /* fill in image where it used to be off the screen. */
818 24c02865 2005-01-04 devnull if(rectclip(&or, screen->r))
819 24c02865 2005-01-04 devnull drawdiff(screen, r, rectaddpt(or, delta), im, nil, im->r.min, S);
821 24c02865 2005-01-04 devnull drawop(screen, r, im, nil, im->r.min, S);
822 24c02865 2005-01-04 devnull flushimage(display, 1);
826 24c02865 2005-01-04 devnull redraw(Image *screen)
828 24c02865 2005-01-04 devnull Rectangle r;
830 24c02865 2005-01-04 devnull if(im == nil)
833 24c02865 2005-01-04 devnull ulrange.max = screen->r.max;
834 24c02865 2005-01-04 devnull ulrange.min = subpt(screen->r.min, Pt(Dx(im->r), Dy(im->r)));
836 24c02865 2005-01-04 devnull ul = pclip(ul, ulrange);
837 24c02865 2005-01-04 devnull drawop(screen, screen->r, im, nil, subpt(im->r.min, subpt(ul, screen->r.min)), S);
839 24c02865 2005-01-04 devnull if(im->repl)
842 24c02865 2005-01-04 devnull /* fill in any outer edges */
843 24c02865 2005-01-04 devnull /* black border */
844 24c02865 2005-01-04 devnull r = rectaddpt(im->r, subpt(ul, im->r.min));
845 24c02865 2005-01-04 devnull border(screen, r, -2, display->black, ZP);
846 24c02865 2005-01-04 devnull r.min = subpt(r.min, Pt(2,2));
847 24c02865 2005-01-04 devnull r.max = addpt(r.max, Pt(2,2));
849 24c02865 2005-01-04 devnull /* gray for the rest */
850 24c02865 2005-01-04 devnull if(gray == nil) {
851 24c02865 2005-01-04 devnull gray = xallocimage(display, Rect(0,0,1,1), RGB24, 1, 0x888888FF);
852 24c02865 2005-01-04 devnull if(gray == nil) {
853 24c02865 2005-01-04 devnull fprint(2, "g out of memory: %r\n");
854 24c02865 2005-01-04 devnull wexits("mem");
857 24c02865 2005-01-04 devnull border(screen, r, -4000, gray, ZP);
858 24c02865 2005-01-04 devnull // flushimage(display, 0);
862 24c02865 2005-01-04 devnull eresized(int new)
864 24c02865 2005-01-04 devnull Rectangle r;
865 24c02865 2005-01-04 devnull r = screen->r;
866 24c02865 2005-01-04 devnull if(new && getwindow(display, Refnone) < 0)
867 24c02865 2005-01-04 devnull fprint(2,"can't reattach to window");
868 24c02865 2005-01-04 devnull ul = addpt(ul, subpt(screen->r.min, r.min));
869 24c02865 2005-01-04 devnull redraw(screen);
872 24c02865 2005-01-04 devnull /* clip p to be in r */
874 24c02865 2005-01-04 devnull pclip(Point p, Rectangle r)
876 24c02865 2005-01-04 devnull if(p.x < r.min.x)
877 24c02865 2005-01-04 devnull p.x = r.min.x;
878 24c02865 2005-01-04 devnull else if(p.x >= r.max.x)
879 24c02865 2005-01-04 devnull p.x = r.max.x-1;
881 24c02865 2005-01-04 devnull if(p.y < r.min.y)
882 24c02865 2005-01-04 devnull p.y = r.min.y;
883 24c02865 2005-01-04 devnull else if(p.y >= r.max.y)
884 24c02865 2005-01-04 devnull p.y = r.max.y-1;
886 24c02865 2005-01-04 devnull return p;
890 24c02865 2005-01-04 devnull * resize is perhaps a misnomer.
891 24c02865 2005-01-04 devnull * this really just grows the window to be at least dx across
892 24c02865 2005-01-04 devnull * and dy high. if the window hits the bottom or right edge,
893 24c02865 2005-01-04 devnull * it is backed up until it hits the top or left edge.
896 24c02865 2005-01-04 devnull resize(int dx, int dy)
898 24c02865 2005-01-04 devnull static Rectangle sr;
899 24c02865 2005-01-04 devnull Rectangle r, or;
901 24c02865 2005-01-04 devnull dx += 2*Borderwidth;
902 24c02865 2005-01-04 devnull dy += 2*Borderwidth;
903 24c02865 2005-01-04 devnull if(wctlfd < 0){
904 24c02865 2005-01-04 devnull wctlfd = open("/dev/wctl", OWRITE);
905 24c02865 2005-01-04 devnull if(wctlfd < 0)
909 24c02865 2005-01-04 devnull r = insetrect(screen->r, -Borderwidth);
910 24c02865 2005-01-04 devnull if(Dx(r) >= dx && Dy(r) >= dy)
913 24c02865 2005-01-04 devnull if(Dx(sr)*Dy(sr) == 0)
914 24c02865 2005-01-04 devnull sr = screenrect();
918 24c02865 2005-01-04 devnull r.max.x = max(r.min.x+dx, r.max.x);
919 24c02865 2005-01-04 devnull r.max.y = max(r.min.y+dy, r.max.y);
920 24c02865 2005-01-04 devnull if(r.max.x > sr.max.x){
921 24c02865 2005-01-04 devnull if(Dx(r) > Dx(sr)){
922 24c02865 2005-01-04 devnull r.min.x = 0;
923 24c02865 2005-01-04 devnull r.max.x = sr.max.x;
925 24c02865 2005-01-04 devnull r = rectaddpt(r, Pt(sr.max.x-r.max.x, 0));
927 24c02865 2005-01-04 devnull if(r.max.y > sr.max.y){
928 24c02865 2005-01-04 devnull if(Dy(r) > Dy(sr)){
929 24c02865 2005-01-04 devnull r.min.y = 0;
930 24c02865 2005-01-04 devnull r.max.y = sr.max.y;
932 24c02865 2005-01-04 devnull r = rectaddpt(r, Pt(0, sr.max.y-r.max.y));
936 24c02865 2005-01-04 devnull * Sometimes we can't actually grow the window big enough,
937 24c02865 2005-01-04 devnull * and resizing it to the same shape makes it flash.
939 24c02865 2005-01-04 devnull if(Dx(r) == Dx(or) && Dy(r) == Dy(or))
942 24c02865 2005-01-04 devnull fprint(wctlfd, "resize -minx %d -miny %d -maxx %d -maxy %d\n",
943 24c02865 2005-01-04 devnull r.min.x, r.min.y, r.max.x, r.max.y);
947 24c02865 2005-01-04 devnull * If we allocimage after a resize but before flushing the draw buffer,
948 24c02865 2005-01-04 devnull * we won't have seen the reshape event, and we won't have called
949 24c02865 2005-01-04 devnull * getwindow, and allocimage will fail. So we flushimage before every alloc.
952 24c02865 2005-01-04 devnull xallocimage(Display *d, Rectangle r, ulong chan, int repl, ulong val)
954 24c02865 2005-01-04 devnull flushimage(display, 0);
955 24c02865 2005-01-04 devnull return allocimage(d, r, chan, repl, val);
958 24c02865 2005-01-04 devnull /* all code below this line should be in the library, but is stolen from colors instead */
959 24c02865 2005-01-04 devnull static char*
960 24c02865 2005-01-04 devnull rdenv(char *name)
962 24c02865 2005-01-04 devnull char *v;
963 24c02865 2005-01-04 devnull int fd, size;
965 24c02865 2005-01-04 devnull fd = open(name, OREAD);
966 24c02865 2005-01-04 devnull if(fd < 0)
967 24c02865 2005-01-04 devnull return 0;
968 24c02865 2005-01-04 devnull size = seek(fd, 0, 2);
969 24c02865 2005-01-04 devnull v = malloc(size+1);
970 24c02865 2005-01-04 devnull if(v == 0){
971 24c02865 2005-01-04 devnull fprint(2, "page: can't malloc: %r\n");
972 24c02865 2005-01-04 devnull wexits("no mem");
974 24c02865 2005-01-04 devnull seek(fd, 0, 0);
975 24c02865 2005-01-04 devnull read(fd, v, size);
976 24c02865 2005-01-04 devnull v[size] = 0;
977 24c02865 2005-01-04 devnull close(fd);
978 24c02865 2005-01-04 devnull return v;
981 24c02865 2005-01-04 devnull Rectangle
982 24c02865 2005-01-04 devnull screenrect(void)
985 24c02865 2005-01-04 devnull char buf[12*5];
987 24c02865 2005-01-04 devnull fd = open("/dev/screen", OREAD);
988 24c02865 2005-01-04 devnull if(fd == -1)
989 24c02865 2005-01-04 devnull fd=open("/mnt/term/dev/screen", OREAD);
990 24c02865 2005-01-04 devnull if(fd == -1){
991 24c02865 2005-01-04 devnull fprint(2, "page: can't open /dev/screen: %r\n");
992 24c02865 2005-01-04 devnull wexits("window read");
994 24c02865 2005-01-04 devnull if(read(fd, buf, sizeof buf) != sizeof buf){
995 24c02865 2005-01-04 devnull fprint(2, "page: can't read /dev/screen: %r\n");
996 24c02865 2005-01-04 devnull wexits("screen read");
998 24c02865 2005-01-04 devnull close(fd);
999 24c02865 2005-01-04 devnull return Rect(atoi(buf+12), atoi(buf+24), atoi(buf+36), atoi(buf+48));
1003 24c02865 2005-01-04 devnull zerox(void)
1005 24c02865 2005-01-04 devnull int pfd[2];
1007 24c02865 2005-01-04 devnull pipe(pfd);
1008 24c02865 2005-01-04 devnull switch(rfork(RFFDG|RFPROC)) {
1009 24c02865 2005-01-04 devnull case -1:
1010 24c02865 2005-01-04 devnull wexits("cannot fork in zerox: %r");
1011 24c02865 2005-01-04 devnull case 0:
1012 24c02865 2005-01-04 devnull dup(pfd[1], 0);
1013 24c02865 2005-01-04 devnull close(pfd[0]);
1014 24c02865 2005-01-04 devnull execl("/bin/page", "page", "-w", 0);
1015 24c02865 2005-01-04 devnull wexits("cannot exec in zerox: %r\n");
1016 24c02865 2005-01-04 devnull default:
1017 24c02865 2005-01-04 devnull close(pfd[1]);
1018 24c02865 2005-01-04 devnull writeimage(pfd[0], im, 0);
1019 24c02865 2005-01-04 devnull close(pfd[0]);
