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rsc
2003-09-30 17:47:42 +00:00
parent b2cfc4e2e7
commit ed7c8e8d02
41 changed files with 3226 additions and 0 deletions
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27
src/cmd/mk/NOTICE Normal file
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Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
Portions Copyright © 1995-1997 C H Forsyth (forsyth@caldo.demon.co.uk). All rights reserved.
Portions Copyright © 1997-1999 Vita Nuova Limited. All rights reserved.
Portions Copyright © 2000-2002 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
Under a licence agreement with Lucent Technologies Inc. effective 1st March 2000,
Vita Nuova Holdings Limited has the right to determine (within a specified scope)
the form and content of sublicences for this software.
Vita Nuova Holdings Limited now makes this software available as Free
Software under the terms of the `GNU General Public LIcense, Version 2'
(see the file LICENCE or http://www.fsf.org/copyleft/gpl.html for
the full terms and conditions). One of the conditions of that licence
is that you must keep intact all notices that refer to that licence and to the absence of
of any warranty: for this software, note that includes this NOTICE file in particular.
This suite of programs 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 General Public License' for more details.
This copyright NOTICE applies to all files in this directory and
subdirectories, unless another copyright notice appears in a given
file or subdirectory. If you take code from this software to use in
other programs, you must somehow include with it an appropriate
copyright notice that includes the copyright notice and the other
notices above.

7
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This is a Unix port of mk,
originally done for the Inferno operating system.
Russ Cox repackaged this to build as a standalone
Unix program. Send comments about packaging to
Russ Cox <rsc@post.harvard.edu>

88
src/cmd/mk/bufblock.c Normal file
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#include "mk.h"
static Bufblock *freelist;
#define QUANTA 4096
Bufblock *
newbuf(void)
{
Bufblock *p;
if (freelist) {
p = freelist;
freelist = freelist->next;
} else {
p = (Bufblock *) Malloc(sizeof(Bufblock));
p->start = Malloc(QUANTA*sizeof(*p->start));
p->end = p->start+QUANTA;
}
p->current = p->start;
*p->start = 0;
p->next = 0;
return p;
}
void
freebuf(Bufblock *p)
{
p->next = freelist;
freelist = p;
}
void
growbuf(Bufblock *p)
{
int n;
Bufblock *f;
char *cp;
n = p->end-p->start+QUANTA;
/* search the free list for a big buffer */
for (f = freelist; f; f = f->next) {
if (f->end-f->start >= n) {
memcpy(f->start, p->start, p->end-p->start);
cp = f->start;
f->start = p->start;
p->start = cp;
cp = f->end;
f->end = p->end;
p->end = cp;
f->current = f->start;
break;
}
}
if (!f) { /* not found - grow it */
p->start = Realloc(p->start, n);
p->end = p->start+n;
}
p->current = p->start+n-QUANTA;
}
void
bufcpy(Bufblock *buf, char *cp, int n)
{
while (n--)
insert(buf, *cp++);
}
void
insert(Bufblock *buf, int c)
{
if (buf->current >= buf->end)
growbuf(buf);
*buf->current++ = c;
}
void
rinsert(Bufblock *buf, Rune r)
{
int n;
n = runelen(r);
if (buf->current+n > buf->end)
growbuf(buf);
runetochar(buf->current, &r);
buf->current += n;
}

33
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#include "mk.h"
Job *
newjob(Rule *r, Node *nlist, char *stem, char **match, Word *pre, Word *npre, Word *tar, Word *atar)
{
register Job *j;
j = (Job *)Malloc(sizeof(Job));
j->r = r;
j->n = nlist;
j->stem = stem;
j->match = match;
j->p = pre;
j->np = npre;
j->t = tar;
j->at = atar;
j->nproc = -1;
j->next = 0;
return(j);
}
void
dumpj(char *s, Job *j, int all)
{
Bprint(&bout, "%s\n", s);
while(j){
Bprint(&bout, "job@%ld: r=%ld n=%ld stem='%s' nproc=%d\n",
j, j->r, j->n, j->stem, j->nproc);
Bprint(&bout, "\ttarget='%s' alltarget='%s' prereq='%s' nprereq='%s'\n",
wtos(j->t, ' '), wtos(j->at, ' '), wtos(j->p, ' '), wtos(j->np, ' '));
j = all? j->next : 0;
}
}

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src/cmd/mk/mk.pdf Normal file
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29
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This is sam (not including samterm) from the 4th edition of Plan 9,
with changes so that it can be compiled under unix.
(Tested on Solaris 7 and Debian 3.0r1.)
Some extra libraries are needed. First, fetch libutf-2.0 and libfmt-2.0
from
http://pdos.lcs.mit.edu/~rsc/software/
(Beware that in libfmt/fmt.c there is a line that says:
'u', __ifmt, /* in Plan 9, __flagfmt */
Thus, sam will have to fmtinstall the other thing. Other ported programs
may have to do the same. The fmt library should probably print messages
about bad format characters to stderr, since no one seems to check the
return codes.)
Compile and install those two libraries.
Set PREFIX in the Makefile to match, then compile sam.
Your C compiler will emit many complaints of the form:
sam.c:496: warning: passing arg 1 of `bufread' from incompatible pointer type
This is because the Plan 9 compiler has a slightly different (better,
ala Oberon) type system than ISO C. Popular compilers generate the right
code, so in an act of civil disobediance I changed just enough to get
it to compile, but left the type errors in. Now the next C standard can
adopt this extension, because at least one important C program uses it!
-- Scott Schwartz, 4 July 2003

40
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#define __USE_UNIX98 // for pread/pwrite, supposedly
#include <unistd.h>
#include <stdlib.h>
#include <stdarg.h>
#include <setjmp.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include "utf.h"
#include "fmt.h"
#define nil 0
#define dup dup2
#define exec execv
#define seek lseek
#define getwd getcwd
#define USED(a)
#define SET(a)
enum {
OREAD = 0,
OWRITE = 1,
ORDWR = 2,
OCEXEC = 4,
ORCLOSE = 8
};
enum {
ERRMAX = 255
};
void exits(const char *);
void _exits(const char *);
int notify (void(*f)(void *, char *));
int create(char *, int, int);
int errstr(char *, int);

39
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address.c: In function `filematch':
address.c:159: warning: passing arg 1 of `bufreset' from incompatible pointer type
address.c:160: warning: passing arg 1 of `bufinsert' from incompatible pointer type
file.c: In function `mergeextend':
file.c:117: warning: passing arg 1 of `bufread' from incompatible pointer type
file.c: In function `fileinsert':
file.c:275: warning: passing arg 1 of `bufinsert' from incompatible pointer type
file.c: In function `filedelete':
file.c:301: warning: passing arg 1 of `bufdelete' from incompatible pointer type
file.c: In function `fileundelete':
file.c:324: warning: passing arg 1 of `bufread' from incompatible pointer type
file.c: In function `filereadc':
file.c:339: warning: passing arg 1 of `bufread' from incompatible pointer type
file.c: In function `fileload':
file.c:405: warning: passing arg 1 of `bufload' from incompatible pointer type
file.c: In function `fileundo':
file.c:528: warning: passing arg 1 of `bufdelete' from incompatible pointer type
file.c:546: warning: passing arg 1 of `bufinsert' from incompatible pointer type
file.c: In function `fileclose':
file.c:604: warning: passing arg 1 of `bufclose' from incompatible pointer type
io.c: In function `readio':
io.c:90: warning: passing arg 1 of `bufload' from incompatible pointer type
io.c: In function `writeio':
io.c:152: warning: passing arg 1 of `bufread' from incompatible pointer type
mesg.c: In function `inmesg':
mesg.c:248: warning: passing arg 1 of `bufread' from incompatible pointer type
mesg.c: In function `snarf':
mesg.c:568: warning: passing arg 1 of `bufread' from incompatible pointer type
mesg.c: In function `setgenstr':
mesg.c:612: warning: passing arg 1 of `bufread' from incompatible pointer type
sam.c: In function `readcmd':
sam.c:496: warning: passing arg 1 of `bufread' from incompatible pointer type
sam.c: In function `copy':
sam.c:676: warning: passing arg 1 of `bufread' from incompatible pointer type
xec.c: In function `s_cmd':
xec.c:234: warning: passing arg 1 of `bufread' from incompatible pointer type
xec.c:243: warning: passing arg 1 of `bufread' from incompatible pointer type
xec.c: In function `display':
xec.c:401: warning: passing arg 1 of `bufread' from incompatible pointer type

17
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typedef struct Plumbmsg Plumbmsg;
struct Plumbmsg {
char *src;
char *dst;
char *wdir;
char *type;
char *attr;
char *data;
int ndata;
};
char *plumbunpackattr(char*);
char *plumbpack(Plumbmsg *, int *);
int plumbfree(Plumbmsg *);
char *cleanname(char*);

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src/cmd/sam/string.c Normal file
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#include "sam.h"
#define MINSIZE 16 /* minimum number of chars allocated */
#define MAXSIZE 256 /* maximum number of chars for an empty string */
void
Strinit(String *p)
{
p->s = emalloc(MINSIZE*RUNESIZE);
p->n = 0;
p->size = MINSIZE;
}
void
Strinit0(String *p)
{
p->s = emalloc(MINSIZE*RUNESIZE);
p->s[0] = 0;
p->n = 1;
p->size = MINSIZE;
}
void
Strclose(String *p)
{
free(p->s);
}
void
Strzero(String *p)
{
if(p->size > MAXSIZE){
p->s = erealloc(p->s, RUNESIZE*MAXSIZE); /* throw away the garbage */
p->size = MAXSIZE;
}
p->n = 0;
}
int
Strlen(Rune *r)
{
Rune *s;
for(s=r; *s; s++)
;
return s-r;
}
void
Strdupl(String *p, Rune *s) /* copies the null */
{
p->n = Strlen(s)+1;
Strinsure(p, p->n);
memmove(p->s, s, p->n*RUNESIZE);
}
void
Strduplstr(String *p, String *q) /* will copy the null if there's one there */
{
Strinsure(p, q->n);
p->n = q->n;
memmove(p->s, q->s, q->n*RUNESIZE);
}
void
Straddc(String *p, int c)
{
Strinsure(p, p->n+1);
p->s[p->n++] = c;
}
void
Strinsure(String *p, ulong n)
{
if(n > STRSIZE)
error(Etoolong);
if(p->size < n){ /* p needs to grow */
n += 100;
p->s = erealloc(p->s, n*RUNESIZE);
p->size = n;
}
}
void
Strinsert(String *p, String *q, Posn p0)
{
Strinsure(p, p->n+q->n);
memmove(p->s+p0+q->n, p->s+p0, (p->n-p0)*RUNESIZE);
memmove(p->s+p0, q->s, q->n*RUNESIZE);
p->n += q->n;
}
void
Strdelete(String *p, Posn p1, Posn p2)
{
memmove(p->s+p1, p->s+p2, (p->n-p2)*RUNESIZE);
p->n -= p2-p1;
}
int
Strcmp(String *a, String *b)
{
int i, c;
for(i=0; i<a->n && i<b->n; i++)
if(c = (a->s[i] - b->s[i])) /* assign = */
return c;
/* damn NULs confuse everything */
i = a->n - b->n;
if(i == 1){
if(a->s[a->n-1] == 0)
return 0;
}else if(i == -1){
if(b->s[b->n-1] == 0)
return 0;
}
return i;
}
int
Strispre(String *a, String *b)
{
int i;
for(i=0; i<a->n && i<b->n; i++){
if(a->s[i] - b->s[i]){ /* assign = */
if(a->s[i] == 0)
return 1;
return 0;
}
}
return i == a->n;
}
char*
Strtoc(String *s)
{
int i;
char *c, *d;
Rune *r;
c = emalloc(s->n*UTFmax + 1); /* worst case UTFmax bytes per rune, plus NUL */
d = c;
r = s->s;
for(i=0; i<s->n; i++)
d += runetochar(d, r++);
if(d==c || d[-1]!=0)
*d = 0;
return c;
}
/*
* Build very temporary String from Rune*
*/
String*
tmprstr(Rune *r, int n)
{
static String p;
p.s = r;
p.n = n;
p.size = n;
return &p;
}
/*
* Convert null-terminated char* into String
*/
String*
tmpcstr(char *s)
{
String *p;
Rune *r;
int i, n;
n = utflen(s); /* don't include NUL */
p = emalloc(sizeof(String));
r = emalloc(n*RUNESIZE);
p->s = r;
for(i=0; i<n; i++,r++)
s += chartorune(r, s);
p->n = n;
p->size = n;
return p;
}
void
freetmpstr(String *s)
{
free(s->s);
free(s);
}

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#include "sam.h"
static int inerror=FALSE;
/*
* A reasonable interface to the system calls
*/
void
resetsys(void)
{
inerror = FALSE;
}
void
syserror(char *a)
{
char buf[ERRMAX];
if(!inerror){
inerror=TRUE;
errstr(buf, sizeof buf);
dprint("%s: ", a);
error_s(Eio, buf);
}
}
int
Read(int f, void *a, int n)
{
char buf[ERRMAX];
if(read(f, (char *)a, n)!=n) {
if (lastfile)
lastfile->rescuing = 1;
errstr(buf, sizeof buf);
if (downloaded)
fprint(2, "read error: %s\n", buf);
rescue();
exits("read");
}
return n;
}
int
Write(int f, void *a, int n)
{
int m;
if((m=write(f, (char *)a, n))!=n)
syserror("write");
return m;
}
void
Seek(int f, long n, int w)
{
if(seek(f, n, w)==-1)
syserror("seek");
}

54
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#include "sam.h"
void
cvttorunes(char *p, int n, Rune *r, int *nb, int *nr, int *nulls)
{
uchar *q;
Rune *s;
int j, w;
/*
* Always guaranteed that n bytes may be interpreted
* without worrying about partial runes. This may mean
* reading up to UTFmax-1 more bytes than n; the caller
* knows this. If n is a firm limit, the caller should
* set p[n] = 0.
*/
q = (uchar*)p;
s = r;
for(j=0; j<n; j+=w){
if(*q < Runeself){
w = 1;
*s = *q++;
}else{
w = chartorune(s, (char*)q);
q += w;
}
if(*s)
s++;
else if(nulls)
*nulls = TRUE;
}
*nb = (char*)q-p;
*nr = s-r;
}
void*
fbufalloc(void)
{
return emalloc(BUFSIZE);
}
void
fbuffree(void *f)
{
free(f);
}
uint
min(uint a, uint b)
{
if(a < b)
return a;
return b;
}

43
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#include <u.h>
#include <libc.h>
#include <draw.h>
Image*
allocimagemix(Display *d, u32int color1, u32int color3)
{
Image *t, *b;
static Image *qmask;
if(qmask == nil)
qmask = allocimage(d, Rect(0,0,1,1), GREY8, 1, 0x3F3F3FFF);
if(d->screenimage->depth <= 8){ /* create a 2×2 texture */
t = allocimage(d, Rect(0,0,1,1), d->screenimage->chan, 0, color1);
if(t == nil)
return nil;
b = allocimage(d, Rect(0,0,2,2), d->screenimage->chan, 1, color3);
if(b == nil){
freeimage(t);
return nil;
}
draw(b, Rect(0,0,1,1), t, nil, ZP);
freeimage(t);
return b;
}else{ /* use a solid color, blended using alpha */
t = allocimage(d, Rect(0,0,1,1), d->screenimage->chan, 1, color1);
if(t == nil)
return nil;
b = allocimage(d, Rect(0,0,1,1), d->screenimage->chan, 1, color3);
if(b == nil){
freeimage(t);
return nil;
}
draw(b, b->r, t, qmask, ZP);
freeimage(t);
return b;
}
}

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#include <u.h>
#include <libc.h>
#include <draw.h>
#define PINC 32 /* realloc granularity */
typedef struct Plist Plist;
struct Plist
{
Point *p;
int np; /* -1 if malloc/realloc failed */
};
static void
appendpt(Plist *l, Point p)
{
if(l->np == -1)
return;
if(l->np == 0)
l->p = malloc(PINC*sizeof(Point));
else if(l->np%PINC == 0)
l->p = realloc(l->p, (l->np+PINC)*sizeof(Point));
if(l->p == 0){
l->np = -1;
return;
}
l->p[l->np++] = p;
}
static int
normsq(Point p)
{
return p.x*p.x+p.y*p.y;
}
static int
psdist(Point p, Point a, Point b)
{
int num, den;
p = subpt(p, a);
b = subpt(b, a);
num = p.x*b.x + p.y*b.y;
if(num <= 0)
return normsq(p);
den = normsq(b);
if(num >= den)
return normsq(subpt(b, p));
return normsq(subpt(divpt(mulpt(b, num), den), p));
}
/*
* Convert cubic Bezier curve control points to polyline
* vertices. Leaves the last vertex off, so you can continue
* with another curve.
*/
static void
bpts1(Plist *l, Point p0, Point p1, Point p2, Point p3, int scale)
{
Point p01, p12, p23, p012, p123, p0123;
Point tp0, tp1, tp2, tp3;
tp0=divpt(p0, scale);
tp1=divpt(p1, scale);
tp2=divpt(p2, scale);
tp3=divpt(p3, scale);
if(psdist(tp1, tp0, tp3)<=1 && psdist(tp2, tp0, tp3)<=1){
appendpt(l, tp0);
appendpt(l, tp1);
appendpt(l, tp2);
}
else{
/*
* if scale factor is getting too big for comfort,
* rescale now & concede the rounding error
*/
if(scale>(1<<12)){
p0=tp0;
p1=tp1;
p2=tp2;
p3=tp3;
scale=1;
}
p01=addpt(p0, p1);
p12=addpt(p1, p2);
p23=addpt(p2, p3);
p012=addpt(p01, p12);
p123=addpt(p12, p23);
p0123=addpt(p012, p123);
bpts1(l, mulpt(p0, 8), mulpt(p01, 4), mulpt(p012, 2), p0123, scale*8);
bpts1(l, p0123, mulpt(p123, 2), mulpt(p23, 4), mulpt(p3, 8), scale*8);
}
}
static void
bpts(Plist *l, Point p0, Point p1, Point p2, Point p3)
{
bpts1(l, p0, p1, p2, p3, 1);
}
static void
bezierpts(Plist *l, Point p0, Point p1, Point p2, Point p3)
{
bpts(l, p0, p1, p2, p3);
appendpt(l, p3);
}
static void
_bezsplinepts(Plist *l, Point *pt, int npt)
{
Point *p, *ep;
Point a, b, c, d;
int periodic;
if(npt<3)
return;
ep = &pt[npt-3];
periodic = eqpt(pt[0], ep[2]);
if(periodic){
a = divpt(addpt(ep[1], pt[0]), 2);
b = divpt(addpt(ep[1], mulpt(pt[0], 5)), 6);
c = divpt(addpt(mulpt(pt[0], 5), pt[1]), 6);
d = divpt(addpt(pt[0], pt[1]), 2);
bpts(l, a, b, c, d);
}
for(p=pt; p<=ep; p++){
if(p==pt && !periodic){
a = p[0];
b = divpt(addpt(p[0], mulpt(p[1], 2)), 3);
}
else{
a = divpt(addpt(p[0], p[1]), 2);
b = divpt(addpt(p[0], mulpt(p[1], 5)), 6);
}
if(p==ep && !periodic){
c = divpt(addpt(mulpt(p[1], 2), p[2]), 3);
d = p[2];
}
else{
c = divpt(addpt(mulpt(p[1], 5), p[2]), 6);
d = divpt(addpt(p[1], p[2]), 2);
}
bpts(l, a, b, c, d);
}
appendpt(l, d);
}
int
bezsplinepts(Point *pt, int npt, Point **pp)
{
Plist l;
l.np = 0;
l.p = nil;
_bezsplinepts(&l, pt, npt);
*pp = l.p;
return l.np;
}
int
bezier(Image *dst, Point p0, Point p1, Point p2, Point p3, int end0, int end1, int radius, Image *src, Point sp)
{
return bezierop(dst, p0, p1, p2, p3, end0, end1, radius, src, sp, SoverD);
}
int
bezierop(Image *dst, Point p0, Point p1, Point p2, Point p3, int end0, int end1, int radius, Image *src, Point sp, Drawop op)
{
Plist l;
l.np = 0;
bezierpts(&l, p0, p1, p2, p3);
if(l.np == -1)
return 0;
if(l.np != 0){
polyop(dst, l.p, l.np, end0, end1, radius, src, addpt(subpt(sp, p0), l.p[0]), op);
free(l.p);
}
return 1;
}
int
bezspline(Image *dst, Point *pt, int npt, int end0, int end1, int radius, Image *src, Point sp)
{
return bezsplineop(dst, pt, npt, end0, end1, radius, src, sp, SoverD);
}
int
bezsplineop(Image *dst, Point *pt, int npt, int end0, int end1, int radius, Image *src, Point sp, Drawop op)
{
Plist l;
l.np = 0;
_bezsplinepts(&l, pt, npt);
if(l.np==-1)
return 0;
if(l.np != 0){
polyop(dst, l.p, l.np, end0, end1, radius, src, addpt(subpt(sp, pt[0]), l.p[0]), op);
free(l.p);
}
return 1;
}
int
fillbezier(Image *dst, Point p0, Point p1, Point p2, Point p3, int w, Image *src, Point sp)
{
return fillbezierop(dst, p0, p1, p2, p3, w, src, sp, SoverD);
}
int
fillbezierop(Image *dst, Point p0, Point p1, Point p2, Point p3, int w, Image *src, Point sp, Drawop op)
{
Plist l;
l.np = 0;
bezierpts(&l, p0, p1, p2, p3);
if(l.np == -1)
return 0;
if(l.np != 0){
fillpolyop(dst, l.p, l.np, w, src, addpt(subpt(sp, p0), l.p[0]), op);
free(l.p);
}
return 1;
}
int
fillbezspline(Image *dst, Point *pt, int npt, int w, Image *src, Point sp)
{
return fillbezsplineop(dst, pt, npt, w, src, sp, SoverD);
}
int
fillbezsplineop(Image *dst, Point *pt, int npt, int w, Image *src, Point sp, Drawop op)
{
Plist l;
l.np = 0;
_bezsplinepts(&l, pt, npt);
if(l.np == -1)
return 0;
if(l.np > 0){
fillpolyop(dst, l.p, l.np, w, src, addpt(subpt(sp, pt[0]), l.p[0]), op);
free(l.p);
}
return 1;
}

21
src/libdraw/border.c Normal file
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@@ -0,0 +1,21 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
void
border(Image *im, Rectangle r, int i, Image *color, Point sp)
{
if(i < 0){
r = insetrect(r, i);
sp = addpt(sp, Pt(i,i));
i = -i;
}
draw(im, Rect(r.min.x, r.min.y, r.max.x, r.min.y+i),
color, nil, sp);
draw(im, Rect(r.min.x, r.max.y-i, r.max.x, r.max.y),
color, nil, Pt(sp.x, sp.y+Dy(r)-i));
draw(im, Rect(r.min.x, r.min.y+i, r.min.x+i, r.max.y-i),
color, nil, Pt(sp.x, sp.y+i));
draw(im, Rect(r.max.x-i, r.min.y+i, r.max.x, r.max.y-i),
color, nil, Pt(sp.x+Dx(r)-i, sp.y+i));
}

49
src/libdraw/cloadimage.c Normal file
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@@ -0,0 +1,49 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
int
cloadimage(Image *i, Rectangle r, uchar *data, int ndata)
{
int m, nb, miny, maxy, ncblock;
uchar *a;
if(!rectinrect(r, i->r)){
werrstr("cloadimage: bad rectangle");
return -1;
}
miny = r.min.y;
m = 0;
ncblock = _compblocksize(r, i->depth);
while(miny != r.max.y){
maxy = atoi((char*)data+0*12);
nb = atoi((char*)data+1*12);
if(maxy<=miny || r.max.y<maxy){
werrstr("creadimage: bad maxy %d", maxy);
return -1;
}
data += 2*12;
ndata -= 2*12;
m += 2*12;
if(nb<=0 || ncblock<nb || nb>ndata){
werrstr("creadimage: bad count %d", nb);
return -1;
}
a = bufimage(i->display, 21+nb);
if(a == nil)
return -1;
a[0] = 'Y';
BPLONG(a+1, i->id);
BPLONG(a+5, r.min.x);
BPLONG(a+9, miny);
BPLONG(a+13, r.max.x);
BPLONG(a+17, maxy);
memmove(a+21, data, nb);
miny = maxy;
data += nb;
ndata += nb;
m += nb;
}
return m;
}

38
src/libdraw/computil.c Normal file
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@@ -0,0 +1,38 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
/*
* compressed data are seuences of byte codes.
* if the first byte b has the 0x80 bit set, the next (b^0x80)+1 bytes
* are data. otherwise, it's two bytes specifying a previous string to repeat.
*/
void
_twiddlecompressed(uchar *buf, int n)
{
uchar *ebuf;
int j, k, c;
ebuf = buf+n;
while(buf < ebuf){
c = *buf++;
if(c >= 128){
k = c-128+1;
for(j=0; j<k; j++, buf++)
*buf ^= 0xFF;
}else
buf++;
}
}
int
_compblocksize(Rectangle r, int depth)
{
int bpl;
bpl = bytesperline(r, depth);
bpl = 2*bpl; /* add plenty extra for blocking, etc. */
if(bpl < NCBLOCK)
return NCBLOCK;
return bpl;
}

16
src/libdraw/debug.c Normal file
View File

@@ -0,0 +1,16 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
void
drawsetdebug(int v)
{
uchar *a;
a = bufimage(display, 1+1);
if(a == 0){
fprint(2, "drawsetdebug: %r\n");
return;
}
a[0] = 'D';
a[1] = v;
}

402
src/libdraw/defont.c Normal file
View File

@@ -0,0 +1,402 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
/*
* lucm/latin1.9, in uncompressed form
*/
uchar
defontdata[] =
{
0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x30,0x20,0x20,0x20,0x20,0x20,
0x20,0x20,0x20,0x20,0x20,0x20,0x30,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,
0x20,0x20,0x30,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x32,0x33,0x30,0x34,0x20,
0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x31,0x35,0x20,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x30,0x06,0x06,0x03,0x42,0x40,0x00,0x00,0x00,0x18,0x03,0x03,
0x02,0x43,0x00,0x60,0x60,0x48,0x00,0x0d,0x0c,0x01,0x81,0x80,0xd0,0x90,0x00,0x00,
0x18,0x01,0x81,0x81,0x40,0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x7f,0x9c,0x1c,
0x0e,0x07,0x01,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xe0,0x70,
0x38,0x1c,0x0e,0x04,0x81,0xc1,0xc0,0x70,0x00,0x1c,0x1c,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xaa,0x80,0xc0,0x63,0xe3,
0xf1,0xf8,0xfe,0x7f,0xff,0xff,0xff,0xff,0xff,0xff,0xfc,0x7f,0xff,0xff,0x1f,0x8f,
0xc7,0xe3,0xf1,0xfb,0x7e,0x3e,0x3f,0x8f,0xff,0xe3,0xe3,0xff,0xff,0xff,0xff,0xff,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x0c,0x18,0x09,0x05,0x82,0x40,0xc0,0x00,0x00,0x06,0x0c,0x04,
0x82,0x40,0xc1,0x80,0x90,0x48,0x00,0x16,0x03,0x06,0x02,0x41,0x60,0x90,0x00,0x00,
0x06,0x06,0x02,0x41,0x41,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3e,0x7f,0xa0,0x10,
0x08,0x04,0x02,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x90,0x48,
0x24,0x12,0x09,0x06,0x82,0x01,0x00,0x90,0x00,0x20,0x10,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x04,0x80,0x00,0x40,0x00,0x00,0x38,0x06,0x18,0x00,0x00,0x00,0x00,0x00,
0x00,0x06,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x07,0xc6,0x01,0xf0,0x00,0x00,0x0c,0x00,0x18,0x00,0x00,0x30,0x00,0x3c,
0x00,0x60,0x06,0x01,0x8c,0x07,0xc0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x01,0xe0,0xc3,0xc0,0x01,0x54,0x9c,0xc0,0x5f,0xef,
0xf7,0xfb,0xfd,0xbf,0xff,0xff,0xff,0xff,0xff,0xff,0xfb,0x7f,0xff,0xff,0x6f,0xb7,
0xdb,0xed,0xf6,0xf9,0x7d,0xfe,0xff,0x6f,0xff,0xdf,0xef,0xff,0xff,0xff,0xff,0xff,
0xff,0x00,0x01,0x00,0x00,0x00,0x00,0x30,0x00,0x14,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x38,0x00,0x00,0x00,0x00,0x00,0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x20,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x78,0x30,0x06,0x06,0x06,0x82,0x80,0xc0,0x00,
0x00,0x18,0x03,0x03,0x02,0x41,0x80,0x30,0x30,0x24,0x76,0x0d,0x0c,0x00,0xc0,0xc0,
0xd0,0x50,0x00,0x00,0x18,0x01,0x81,0x81,0x40,0x30,0x00,0x28,0x0f,0x7f,0xbc,0x1c,
0x0e,0x07,0x03,0xc0,0x10,0x70,0x24,0x10,0x09,0x07,0x03,0x80,0xe0,0x70,0x90,0x48,
0x24,0x12,0x09,0x05,0x81,0x81,0xc0,0x80,0x70,0x18,0x1c,0x07,0x01,0xc1,0xc0,0x90,
0x00,0x0c,0x04,0x84,0x83,0xe1,0xc0,0xe0,0x38,0x0c,0x0c,0x02,0x00,0x00,0x00,0x00,
0x00,0x06,0x1c,0x06,0x0f,0x87,0xc0,0x63,0xf8,0x78,0xfe,0x3e,0x0e,0x00,0x00,0x00,
0x00,0x00,0x00,0x7c,0x1c,0x0c,0x1f,0x03,0xc7,0xc3,0xf1,0xf8,0x3c,0x63,0x3f,0x0f,
0x8c,0x66,0x06,0x19,0x84,0x78,0x7e,0x1e,0x1f,0x07,0xcf,0xf3,0x1b,0x0d,0x86,0x63,
0x61,0x9f,0xc6,0x06,0x00,0x30,0x00,0x00,0x10,0x00,0x18,0x00,0x00,0x30,0x00,0x60,
0x00,0x60,0x06,0x01,0x8c,0x00,0xc0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x80,
0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x00,0xc0,0x60,0x00,0xaa,0xb6,0xc0,0x43,0xe3,
0xf1,0xf8,0xfc,0x3f,0xef,0x8f,0xdb,0xef,0xf6,0xf8,0xfb,0xff,0x1f,0x8f,0x6f,0xb7,
0xdb,0xed,0xf6,0xfa,0x7e,0x7e,0x3f,0x7f,0x8f,0xe7,0xe3,0xf8,0xfe,0x3e,0x3f,0x6f,
0x00,0x00,0x01,0x01,0xc8,0x0b,0x0c,0x30,0x7c,0x14,0x0f,0x0f,0x00,0x00,0x00,0x00,
0x78,0x00,0x1c,0x00,0x0f,0x07,0x81,0x80,0x00,0x7c,0x00,0x00,0x1c,0x0f,0x80,0x04,
0x42,0x23,0x90,0x00,0x18,0x0c,0x06,0x03,0x01,0x80,0xc0,0x3c,0x3c,0x3f,0x1f,0x8f,
0xc7,0xe7,0xe3,0xf1,0xf8,0xfc,0x7c,0x30,0x8f,0x07,0x83,0xc1,0xe0,0xf0,0x00,0x3d,
0x31,0x98,0xcc,0x66,0x36,0x19,0x80,0xcc,0x0c,0x18,0x09,0x0b,0x02,0x81,0x20,0x00,
0x00,0x06,0x0c,0x04,0x82,0x40,0x60,0xc0,0x48,0x24,0x18,0x16,0x03,0x03,0x01,0x21,
0x60,0x50,0x00,0x00,0x06,0x06,0x02,0x41,0x40,0xc1,0x80,0x28,0x87,0x7f,0x84,0x10,
0x08,0x04,0x02,0x40,0x38,0x48,0x24,0x10,0x09,0x04,0x04,0x81,0x00,0x80,0x90,0x48,
0x24,0x12,0x09,0x04,0x80,0x41,0x00,0x80,0x40,0x04,0x10,0x04,0x02,0x01,0x20,0x90,
0x00,0x0c,0x04,0x84,0x86,0x53,0x65,0xb0,0x08,0x18,0x06,0x0a,0x80,0x00,0x00,0x00,
0x00,0x0c,0x36,0x0e,0x19,0xcc,0xe0,0xe3,0xf8,0xcc,0xfe,0x63,0x1b,0x00,0x00,0x00,
0x00,0x00,0x00,0xc6,0x62,0x0c,0x19,0x86,0x66,0x63,0x01,0x80,0x66,0x63,0x0c,0x01,
0x8c,0xc6,0x06,0x19,0xc4,0xcc,0x63,0x33,0x19,0x8c,0x61,0x83,0x1b,0x0d,0x86,0x63,
0x61,0x80,0xc6,0x03,0x00,0x30,0x30,0x00,0x1c,0x00,0x18,0x00,0x00,0x30,0x00,0x60,
0x00,0x60,0x00,0x00,0x0c,0x00,0xc0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x80,
0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x00,0xc0,0x60,0x01,0x54,0x86,0xc0,0x7b,0xef,
0xf7,0xfb,0xfd,0xbf,0xc7,0xb7,0xdb,0xef,0xf6,0xfb,0xfb,0x7e,0xff,0x7f,0x6f,0xb7,
0xdb,0xed,0xf6,0xfb,0x7f,0xbe,0xff,0x7f,0xbf,0xfb,0xef,0xfb,0xfd,0xfe,0xdf,0x6f,
0xff,0x00,0x07,0x83,0x24,0x13,0x0c,0x30,0xc6,0x00,0x10,0x81,0x80,0x00,0x00,0x00,
0x84,0x00,0x22,0x00,0x01,0x80,0xc0,0x00,0x00,0xf4,0x00,0x00,0x2c,0x18,0xc0,0x0c,
0x46,0x20,0x90,0x00,0x18,0x0c,0x06,0x03,0x01,0x80,0xc0,0x70,0x66,0x30,0x18,0x0c,
0x06,0x01,0x80,0xc0,0x60,0x30,0x66,0x38,0x99,0x8c,0xc6,0x63,0x31,0x98,0x00,0x66,
0x31,0x98,0xcc,0x66,0x36,0x19,0x80,0xcc,0x00,0x00,0x00,0x00,0x00,0x00,0xc0,0x00,
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0x00,0x09,0xe3,0x04,0x00,0x0f,0x00,0x09,0xec,0x04,0x00,0x0f,0x00,0x09,0xf5,0x04,
0x00,0x0f,0x00,0x09,0xfe,0x04,0x00,0x0f,0x00,0x09,0x07,0x05,0x00,0x0f,0x00,0x09,
0x10,0x05,0x00,0x0f,0x00,0x09,0x19,0x05,0x00,0x0f,0x00,0x09,0x22,0x05,0x00,0x0f,
0x00,0x09,0x2b,0x05,0x00,0x0f,0x00,0x09,0x34,0x05,0x00,0x0f,0x00,0x09,0x3d,0x05,
0x00,0x0f,0x00,0x09,0x46,0x05,0x00,0x0f,0x00,0x09,0x4f,0x05,0x00,0x0f,0x00,0x09,
0x58,0x05,0x00,0x0f,0x00,0x09,0x61,0x05,0x00,0x0f,0x00,0x09,0x6a,0x05,0x00,0x0f,
0x00,0x09,0x73,0x05,0x00,0x0f,0x00,0x09,0x7c,0x05,0x00,0x0f,0x00,0x09,0x85,0x05,
0x00,0x0f,0x00,0x09,0x8e,0x05,0x00,0x0f,0x00,0x09,0x97,0x05,0x00,0x0f,0x00,0x09,
0xa0,0x05,0x00,0x0d,0x00,0x09,0xa9,0x05,0x05,0x0f,0x00,0x09,0xb2,0x05,0x02,0x0e,
0x00,0x09,0xbb,0x05,0x03,0x0d,0x00,0x09,0xc4,0x05,0x03,0x0d,0x00,0x09,0xcd,0x05,
0x03,0x0d,0x00,0x09,0xd6,0x05,0x02,0x0e,0x00,0x09,0xdf,0x05,0x03,0x0e,0x00,0x09,
0xe8,0x05,0x02,0x04,0x00,0x09,0xf1,0x05,0x03,0x0d,0x00,0x09,0xfa,0x05,0x03,0x0a,
0x00,0x09,0x03,0x06,0x06,0x0b,0x00,0x09,0x0c,0x06,0x07,0x0a,0x00,0x09,0x15,0x06,
0x08,0x09,0x00,0x09,0x1e,0x06,0x03,0x0b,0x00,0x09,0x27,0x06,0x02,0x03,0x00,0x09,
0x30,0x06,0x03,0x07,0x00,0x09,0x39,0x06,0x05,0x0c,0x00,0x09,0x42,0x06,0x03,0x0a,
0x00,0x09,0x4b,0x06,0x03,0x0a,0x00,0x09,0x54,0x06,0x02,0x04,0x00,0x09,0x5d,0x06,
0x05,0x0f,0x00,0x09,0x66,0x06,0x03,0x0e,0x00,0x09,0x6f,0x06,0x08,0x0a,0x00,0x09,
0x78,0x06,0x0d,0x0f,0x00,0x09,0x81,0x06,0x03,0x0a,0x00,0x09,0x8a,0x06,0x03,0x0a,
0x00,0x09,0x93,0x06,0x06,0x0b,0x00,0x09,0x9c,0x06,0x03,0x0d,0x00,0x09,0xa5,0x06,
0x03,0x0d,0x00,0x09,0xae,0x06,0x03,0x0d,0x00,0x09,0xb7,0x06,0x05,0x0f,0x00,0x09,
0xc0,0x06,0x00,0x0d,0x00,0x09,0xc9,0x06,0x00,0x0d,0x00,0x09,0xd2,0x06,0x00,0x0d,
0x00,0x09,0xdb,0x06,0x00,0x0d,0x00,0x09,0xe4,0x06,0x00,0x0d,0x00,0x09,0xed,0x06,
0x01,0x0d,0x00,0x09,0xf6,0x06,0x03,0x0d,0x00,0x09,0xff,0x06,0x03,0x0f,0x00,0x09,
0x08,0x07,0x00,0x0d,0x00,0x09,0x11,0x07,0x00,0x0d,0x00,0x09,0x1a,0x07,0x00,0x0d,
0x00,0x09,0x23,0x07,0x00,0x0d,0x00,0x09,0x2c,0x07,0x00,0x0d,0x00,0x09,0x35,0x07,
0x00,0x0d,0x00,0x09,0x3e,0x07,0x00,0x0d,0x00,0x09,0x47,0x07,0x00,0x0d,0x00,0x09,
0x50,0x07,0x03,0x0d,0x00,0x09,0x59,0x07,0x00,0x0d,0x00,0x09,0x62,0x07,0x00,0x0d,
0x00,0x09,0x6b,0x07,0x00,0x0d,0x00,0x09,0x74,0x07,0x00,0x0d,0x00,0x09,0x7d,0x07,
0x00,0x0d,0x00,0x09,0x86,0x07,0x00,0x0d,0x00,0x09,0x8f,0x07,0x06,0x0b,0x00,0x09,
0x98,0x07,0x03,0x0d,0x00,0x09,0xa1,0x07,0x00,0x0d,0x00,0x09,0xaa,0x07,0x00,0x0d,
0x00,0x09,0xb3,0x07,0x00,0x0d,0x00,0x09,0xbc,0x07,0x00,0x0d,0x00,0x09,0xc5,0x07,
0x00,0x0d,0x00,0x09,0xce,0x07,0x03,0x0d,0x00,0x09,0xd7,0x07,0x02,0x0d,0x00,0x09,
0xe0,0x07,0x02,0x0d,0x00,0x09,0xe9,0x07,0x02,0x0d,0x00,0x09,0xf2,0x07,0x02,0x0d,
0x00,0x09,0xfb,0x07,0x02,0x0d,0x00,0x09,0x04,0x08,0x02,0x0d,0x00,0x09,0x0d,0x08,
0x02,0x0d,0x00,0x09,0x16,0x08,0x05,0x0d,0x00,0x09,0x1f,0x08,0x05,0x0f,0x00,0x09,
0x28,0x08,0x02,0x0d,0x00,0x09,0x31,0x08,0x02,0x0d,0x00,0x09,0x3a,0x08,0x02,0x0d,
0x00,0x09,0x43,0x08,0x02,0x0d,0x00,0x09,0x4c,0x08,0x02,0x0d,0x00,0x09,0x55,0x08,
0x02,0x0d,0x00,0x09,0x5e,0x08,0x02,0x0d,0x00,0x09,0x67,0x08,0x02,0x0d,0x00,0x09,
0x70,0x08,0x02,0x0d,0x00,0x09,0x79,0x08,0x02,0x0d,0x00,0x09,0x82,0x08,0x02,0x0d,
0x00,0x09,0x8b,0x08,0x02,0x0d,0x00,0x09,0x94,0x08,0x02,0x0d,0x00,0x09,0x9d,0x08,
0x02,0x0d,0x00,0x09,0xa6,0x08,0x02,0x0d,0x00,0x09,0xaf,0x08,0x05,0x0c,0x00,0x09,
0xb8,0x08,0x05,0x0d,0x00,0x09,0xc1,0x08,0x02,0x0d,0x00,0x09,0xca,0x08,0x02,0x0d,
0x00,0x09,0xd3,0x08,0x02,0x0d,0x00,0x09,0xdc,0x08,0x02,0x0d,0x00,0x09,0xe5,0x08,
0x02,0x0f,0x00,0x09,0xee,0x08,0x03,0x0f,0x00,0x09,0xf7,0x08,0x02,0x0f,0x00,0x09,
0x00,0x09,0x00,0x00,0x00,0x00,
};
int sizeofdefont = sizeof defontdata;
void
_unpackinfo(Fontchar *fc, uchar *p, int n)
{
int j;
for(j=0; j<=n; j++){
fc->x = p[0]|(p[1]<<8);
fc->top = p[2];
fc->bottom = p[3];
fc->left = p[4];
fc->width = p[5];
fc++;
p += 6;
}
}

69
src/libdraw/draw.c Normal file
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@@ -0,0 +1,69 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
void
_setdrawop(Display *d, Drawop op)
{
uchar *a;
if(op != SoverD){
a = bufimage(d, 1+1);
if(a == 0)
return;
a[0] = 'O';
a[1] = op;
}
}
static void
draw1(Image *dst, Rectangle *r, Image *src, Point *p0, Image *mask, Point *p1, Drawop op)
{
uchar *a;
_setdrawop(dst->display, op);
a = bufimage(dst->display, 1+4+4+4+4*4+2*4+2*4);
if(a == 0)
return;
if(src == nil)
src = dst->display->black;
if(mask == nil)
mask = dst->display->opaque;
a[0] = 'd';
BPLONG(a+1, dst->id);
BPLONG(a+5, src->id);
BPLONG(a+9, mask->id);
BPLONG(a+13, r->min.x);
BPLONG(a+17, r->min.y);
BPLONG(a+21, r->max.x);
BPLONG(a+25, r->max.y);
BPLONG(a+29, p0->x);
BPLONG(a+33, p0->y);
BPLONG(a+37, p1->x);
BPLONG(a+41, p1->y);
}
void
draw(Image *dst, Rectangle r, Image *src, Image *mask, Point p1)
{
draw1(dst, &r, src, &p1, mask, &p1, SoverD);
}
void
drawop(Image *dst, Rectangle r, Image *src, Image *mask, Point p1, Drawop op)
{
draw1(dst, &r, src, &p1, mask, &p1, op);
}
void
gendraw(Image *dst, Rectangle r, Image *src, Point p0, Image *mask, Point p1)
{
draw1(dst, &r, src, &p0, mask, &p1, SoverD);
}
void
gendrawop(Image *dst, Rectangle r, Image *src, Point p0, Image *mask, Point p1, Drawop op)
{
draw1(dst, &r, src, &p0, mask, &p1, op);
}

23
src/libdraw/drawrepl.c Normal file
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@@ -0,0 +1,23 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
int
drawreplxy(int min, int max, int x)
{
int sx;
sx = (x-min)%(max-min);
if(sx < 0)
sx += max-min;
return sx+min;
}
Point
drawrepl(Rectangle r, Point p)
{
p.x = drawreplxy(r.min.x, r.max.x, p.x);
p.y = drawreplxy(r.min.y, r.max.y, p.y);
return p;
}

116
src/libdraw/egetrect.c Normal file
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@@ -0,0 +1,116 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
#include <cursor.h>
#include <event.h>
#define W Borderwidth
static Image *tmp[4];
static Image *red;
static Cursor sweep={
{-7, -7},
{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xE0, 0x07,
0xE0, 0x07, 0xE0, 0x07, 0xE3, 0xF7, 0xE3, 0xF7,
0xE3, 0xE7, 0xE3, 0xF7, 0xE3, 0xFF, 0xE3, 0x7F,
0xE0, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,},
{0x00, 0x00, 0x7F, 0xFE, 0x40, 0x02, 0x40, 0x02,
0x40, 0x02, 0x40, 0x02, 0x40, 0x02, 0x41, 0xE2,
0x41, 0xC2, 0x41, 0xE2, 0x41, 0x72, 0x40, 0x38,
0x40, 0x1C, 0x40, 0x0E, 0x7F, 0xE6, 0x00, 0x00,}
};
static
void
brects(Rectangle r, Rectangle rp[4])
{
if(Dx(r) < 2*W)
r.max.x = r.min.x+2*W;
if(Dy(r) < 2*W)
r.max.y = r.min.y+2*W;
rp[0] = Rect(r.min.x, r.min.y, r.max.x, r.min.y+W);
rp[1] = Rect(r.min.x, r.max.y-W, r.max.x, r.max.y);
rp[2] = Rect(r.min.x, r.min.y+W, r.min.x+W, r.max.y-W);
rp[3] = Rect(r.max.x-W, r.min.y+W, r.max.x, r.max.y-W);
}
Rectangle
egetrect(int but, Mouse *m)
{
Rectangle r, rc;
but = 1<<(but-1);
esetcursor(&sweep);
while(m->buttons)
*m = emouse();
while(!(m->buttons & but)){
*m = emouse();
if(m->buttons & (7^but))
goto Return;
}
r.min = m->xy;
r.max = m->xy;
do{
rc = canonrect(r);
edrawgetrect(rc, 1);
*m = emouse();
edrawgetrect(rc, 0);
r.max = m->xy;
}while(m->buttons == but);
Return:
esetcursor(0);
if(m->buttons & (7^but)){
rc.min.x = rc.max.x = 0;
rc.min.y = rc.max.y = 0;
while(m->buttons)
*m = emouse();
}
return rc;
}
static
void
freetmp(void)
{
freeimage(tmp[0]);
freeimage(tmp[1]);
freeimage(tmp[2]);
freeimage(tmp[3]);
freeimage(red);
tmp[0] = tmp[1] = tmp[2] = tmp[3] = red = nil;
}
void
edrawgetrect(Rectangle rc, int up)
{
int i;
Rectangle r, rects[4];
if(up && tmp[0]!=nil)
if(Dx(tmp[0]->r)<Dx(rc) || Dy(tmp[2]->r)<Dy(rc))
freetmp();
if(tmp[0] == 0){
r = Rect(0, 0, Dx(screen->r), W);
tmp[0] = allocimage(display, r, screen->chan, 0, -1);
tmp[1] = allocimage(display, r, screen->chan, 0, -1);
r = Rect(0, 0, W, Dy(screen->r));
tmp[2] = allocimage(display, r, screen->chan, 0, -1);
tmp[3] = allocimage(display, r, screen->chan, 0, -1);
red = allocimage(display, Rect(0,0,1,1), screen->chan, 1, DRed);
if(tmp[0]==0 || tmp[1]==0 || tmp[2]==0 || tmp[3]==0 || red==0)
drawerror(display, "getrect: allocimage failed");
}
brects(rc, rects);
if(!up){
for(i=0; i<4; i++)
draw(screen, rects[i], tmp[i], nil, ZP);
return;
}
for(i=0; i<4; i++){
draw(tmp[i], Rect(0, 0, Dx(rects[i]), Dy(rects[i])), screen, nil, rects[i].min);
draw(screen, rects[i], red, nil, ZP);
}
}

17
src/libdraw/freesubfont.c Normal file
View File

@@ -0,0 +1,17 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
void
freesubfont(Subfont *f)
{
if(f == 0)
return;
f->ref--;
if(f->ref > 0)
return;
uninstallsubfont(f);
free(f->info); /* note: f->info must have been malloc'ed! */
freeimage(f->bits);
free(f);
}

60
src/libdraw/getdefont.c Normal file
View File

@@ -0,0 +1,60 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
Subfont*
getdefont(Display *d)
{
char *hdr, *p;
int n;
Fontchar *fc;
Subfont *f;
int ld;
Rectangle r;
Image *i;
/*
* make sure data is word-aligned. this is true with Plan 9 compilers
* but not in general. the byte order is right because the data is
* declared as char*, not ulong*.
*/
p = (char*)defontdata;
n = (ulong)p & 3;
if(n != 0){
memmove(p+(4-n), p, sizeofdefont-n);
p += 4-n;
}
ld = atoi(p+0*12);
r.min.x = atoi(p+1*12);
r.min.y = atoi(p+2*12);
r.max.x = atoi(p+3*12);
r.max.y = atoi(p+4*12);
i = allocimage(d, r, drawld2chan[ld], 0, 0);
if(i == 0)
return 0;
p += 5*12;
n = loadimage(i, r, (uchar*)p, (defontdata+sizeofdefont)-(uchar*)p);
if(n < 0){
freeimage(i);
return 0;
}
hdr = p+n;
n = atoi(hdr);
p = hdr+3*12;
fc = malloc(sizeof(Fontchar)*(n+1));
if(fc == 0){
freeimage(i);
return 0;
}
_unpackinfo(fc, (uchar*)p, n);
f = allocsubfont("*default*", n, atoi(hdr+12), atoi(hdr+24), fc, i);
if(f == 0){
freeimage(i);
free(fc);
return 0;
}
return f;
}

133
src/libdraw/getrect.c Normal file
View File

@@ -0,0 +1,133 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
#include <thread.h>
#include <cursor.h>
#include <mouse.h>
#define W Borderwidth
static Image *tmp[4];
static Image *red;
static Cursor sweep={
{-7, -7},
{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xE0, 0x07,
0xE0, 0x07, 0xE0, 0x07, 0xE3, 0xF7, 0xE3, 0xF7,
0xE3, 0xE7, 0xE3, 0xF7, 0xE3, 0xFF, 0xE3, 0x7F,
0xE0, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,},
{0x00, 0x00, 0x7F, 0xFE, 0x40, 0x02, 0x40, 0x02,
0x40, 0x02, 0x40, 0x02, 0x40, 0x02, 0x41, 0xE2,
0x41, 0xC2, 0x41, 0xE2, 0x41, 0x72, 0x40, 0x38,
0x40, 0x1C, 0x40, 0x0E, 0x7F, 0xE6, 0x00, 0x00,}
};
static
void
brects(Rectangle r, Rectangle rp[4])
{
if(Dx(r) < 2*W)
r.max.x = r.min.x+2*W;
if(Dy(r) < 2*W)
r.max.y = r.min.y+2*W;
rp[0] = Rect(r.min.x, r.min.y, r.max.x, r.min.y+W);
rp[1] = Rect(r.min.x, r.max.y-W, r.max.x, r.max.y);
rp[2] = Rect(r.min.x, r.min.y+W, r.min.x+W, r.max.y-W);
rp[3] = Rect(r.max.x-W, r.min.y+W, r.max.x, r.max.y-W);
}
Rectangle
getrect(int but, Mousectl *mc)
{
Rectangle r, rc;
but = 1<<(but-1);
setcursor(mc, &sweep);
while(mc->m.buttons)
readmouse(mc);
while(!(mc->m.buttons & but)){
readmouse(mc);
if(mc->m.buttons & (7^but))
goto Return;
}
r.min = mc->m.xy;
r.max = mc->m.xy;
do{
rc = canonrect(r);
drawgetrect(rc, 1);
readmouse(mc);
drawgetrect(rc, 0);
r.max = mc->m.xy;
}while(mc->m.buttons == but);
Return:
setcursor(mc, nil);
if(mc->m.buttons & (7^but)){
rc.min.x = rc.max.x = 0;
rc.min.y = rc.max.y = 0;
while(mc->m.buttons)
readmouse(mc);
}
return rc;
}
static
void
freetmp(void)
{
freeimage(tmp[0]);
freeimage(tmp[1]);
freeimage(tmp[2]);
freeimage(tmp[3]);
freeimage(red);
tmp[0] = tmp[1] = tmp[2] = tmp[3] = red = nil;
}
static
int
max(int a, int b)
{
if(a > b)
return a;
return b;
}
void
drawgetrect(Rectangle rc, int up)
{
int i;
Rectangle r, rects[4];
/*
* BUG: if for some reason we have two of these going on at once
* when we must grow the tmp buffers, we lose data. Also if tmp
* is unallocated and we ask to restore the screen, it would be nice
* to complain, but we silently make a mess.
*/
if(up && tmp[0]!=nil)
if(Dx(tmp[0]->r)<Dx(rc) || Dy(tmp[2]->r)<Dy(rc))
freetmp();
if(tmp[0] == 0){
r = Rect(0, 0, max(Dx(display->screenimage->r), Dx(rc)), W);
tmp[0] = allocimage(display, r, screen->chan, 0, -1);
tmp[1] = allocimage(display, r, screen->chan, 0, -1);
r = Rect(0, 0, W, max(Dy(display->screenimage->r), Dy(rc)));
tmp[2] = allocimage(display, r, screen->chan, 0, -1);
tmp[3] = allocimage(display, r, screen->chan, 0, -1);
red = allocimage(display, Rect(0,0,1,1), screen->chan, 1, DRed);
if(tmp[0]==0 || tmp[1]==0 || tmp[2]==0 || tmp[3]==0 || red==0){
freetmp();
drawerror(display, "getrect: allocimage failed");
}
}
brects(rc, rects);
if(!up){
for(i=0; i<4; i++)
draw(screen, rects[i], tmp[i], nil, ZP);
return;
}
for(i=0; i<4; i++){
draw(tmp[i], Rect(0, 0, Dx(rects[i]), Dy(rects[i])), screen, nil, rects[i].min);
draw(screen, rects[i], red, nil, ZP);
}
}

140
src/libdraw/icossin.c Normal file
View File

@@ -0,0 +1,140 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
/*
* Integer sine and cosine for integral degree argument.
* Tables computed by (sin,cos)(PI*d/180).
*/
static short sinus[91] = {
0, /* 0 */
18, /* 1 */
36, /* 2 */
54, /* 3 */
71, /* 4 */
89, /* 5 */
107, /* 6 */
125, /* 7 */
143, /* 8 */
160, /* 9 */
178, /* 10 */
195, /* 11 */
213, /* 12 */
230, /* 13 */
248, /* 14 */
265, /* 15 */
282, /* 16 */
299, /* 17 */
316, /* 18 */
333, /* 19 */
350, /* 20 */
367, /* 21 */
384, /* 22 */
400, /* 23 */
416, /* 24 */
433, /* 25 */
449, /* 26 */
465, /* 27 */
481, /* 28 */
496, /* 29 */
512, /* 30 */
527, /* 31 */
543, /* 32 */
558, /* 33 */
573, /* 34 */
587, /* 35 */
602, /* 36 */
616, /* 37 */
630, /* 38 */
644, /* 39 */
658, /* 40 */
672, /* 41 */
685, /* 42 */
698, /* 43 */
711, /* 44 */
724, /* 45 */
737, /* 46 */
749, /* 47 */
761, /* 48 */
773, /* 49 */
784, /* 50 */
796, /* 51 */
807, /* 52 */
818, /* 53 */
828, /* 54 */
839, /* 55 */
849, /* 56 */
859, /* 57 */
868, /* 58 */
878, /* 59 */
887, /* 60 */
896, /* 61 */
904, /* 62 */
912, /* 63 */
920, /* 64 */
928, /* 65 */
935, /* 66 */
943, /* 67 */
949, /* 68 */
956, /* 69 */
962, /* 70 */
968, /* 71 */
974, /* 72 */
979, /* 73 */
984, /* 74 */
989, /* 75 */
994, /* 76 */
998, /* 77 */
1002, /* 78 */
1005, /* 79 */
1008, /* 80 */
1011, /* 81 */
1014, /* 82 */
1016, /* 83 */
1018, /* 84 */
1020, /* 85 */
1022, /* 86 */
1023, /* 87 */
1023, /* 88 */
1024, /* 89 */
1024, /* 90 */
};
void
icossin(int deg, int *cosp, int *sinp)
{
int sinsign, cossign;
short *stp, *ctp;
deg %= 360;
if(deg < 0)
deg += 360;
sinsign = 1;
cossign = 1;
stp = 0;
ctp = 0;
switch(deg/90){
case 2:
sinsign = -1;
cossign = -1;
deg -= 180;
/* fall through */
case 0:
stp = &sinus[deg];
ctp = &sinus[90-deg];
break;
case 3:
sinsign = -1;
cossign = -1;
deg -= 180;
/* fall through */
case 1:
deg = 180-deg;
cossign = -cossign;
stp = &sinus[deg];
ctp = &sinus[90-deg];
break;
}
*sinp = sinsign*stp[0];
*cosp = cossign*ctp[0];
}

261
src/libdraw/icossin2.c Normal file
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#include <u.h>
#include <libc.h>
#include <draw.h>
/*
* Sine and Cosine of arctangents, calculated by
* (sin(atan(index/100.0))*1024.+0.5)
* (cos(atan(index/100.0))*1024.+0.5)
* To use, get rational tangent between 0<=tan<=1, scale by 100,
* and look up sin and cos, and use linear interpolation. divide by 1024.
* Maximum error is 0.0020. Without linear interpolation, it's 0.010.
*/
static
short sinus[] = {
0, /* 0.00 */
10, /* 0.01 */
20, /* 0.02 */
31, /* 0.03 */
41, /* 0.04 */
51, /* 0.05 */
61, /* 0.06 */
72, /* 0.07 */
82, /* 0.08 */
92, /* 0.09 */
102, /* 0.10 */
112, /* 0.11 */
122, /* 0.12 */
132, /* 0.13 */
142, /* 0.14 */
152, /* 0.15 */
162, /* 0.16 */
172, /* 0.17 */
181, /* 0.18 */
191, /* 0.19 */
201, /* 0.20 */
210, /* 0.21 */
220, /* 0.22 */
230, /* 0.23 */
239, /* 0.24 */
248, /* 0.25 */
258, /* 0.26 */
267, /* 0.27 */
276, /* 0.28 */
285, /* 0.29 */
294, /* 0.30 */
303, /* 0.31 */
312, /* 0.32 */
321, /* 0.33 */
330, /* 0.34 */
338, /* 0.35 */
347, /* 0.36 */
355, /* 0.37 */
364, /* 0.38 */
372, /* 0.39 */
380, /* 0.40 */
388, /* 0.41 */
397, /* 0.42 */
405, /* 0.43 */
412, /* 0.44 */
420, /* 0.45 */
428, /* 0.46 */
436, /* 0.47 */
443, /* 0.48 */
451, /* 0.49 */
458, /* 0.50 */
465, /* 0.51 */
472, /* 0.52 */
480, /* 0.53 */
487, /* 0.54 */
493, /* 0.55 */
500, /* 0.56 */
507, /* 0.57 */
514, /* 0.58 */
520, /* 0.59 */
527, /* 0.60 */
533, /* 0.61 */
540, /* 0.62 */
546, /* 0.63 */
552, /* 0.64 */
558, /* 0.65 */
564, /* 0.66 */
570, /* 0.67 */
576, /* 0.68 */
582, /* 0.69 */
587, /* 0.70 */
593, /* 0.71 */
598, /* 0.72 */
604, /* 0.73 */
609, /* 0.74 */
614, /* 0.75 */
620, /* 0.76 */
625, /* 0.77 */
630, /* 0.78 */
635, /* 0.79 */
640, /* 0.80 */
645, /* 0.81 */
649, /* 0.82 */
654, /* 0.83 */
659, /* 0.84 */
663, /* 0.85 */
668, /* 0.86 */
672, /* 0.87 */
676, /* 0.88 */
681, /* 0.89 */
685, /* 0.90 */
689, /* 0.91 */
693, /* 0.92 */
697, /* 0.93 */
701, /* 0.94 */
705, /* 0.95 */
709, /* 0.96 */
713, /* 0.97 */
717, /* 0.98 */
720, /* 0.99 */
724, /* 1.00 */
728, /* 1.01 */
};
static
short cosinus[] = {
1024, /* 0.00 */
1024, /* 0.01 */
1024, /* 0.02 */
1024, /* 0.03 */
1023, /* 0.04 */
1023, /* 0.05 */
1022, /* 0.06 */
1022, /* 0.07 */
1021, /* 0.08 */
1020, /* 0.09 */
1019, /* 0.10 */
1018, /* 0.11 */
1017, /* 0.12 */
1015, /* 0.13 */
1014, /* 0.14 */
1013, /* 0.15 */
1011, /* 0.16 */
1010, /* 0.17 */
1008, /* 0.18 */
1006, /* 0.19 */
1004, /* 0.20 */
1002, /* 0.21 */
1000, /* 0.22 */
998, /* 0.23 */
996, /* 0.24 */
993, /* 0.25 */
991, /* 0.26 */
989, /* 0.27 */
986, /* 0.28 */
983, /* 0.29 */
981, /* 0.30 */
978, /* 0.31 */
975, /* 0.32 */
972, /* 0.33 */
969, /* 0.34 */
967, /* 0.35 */
963, /* 0.36 */
960, /* 0.37 */
957, /* 0.38 */
954, /* 0.39 */
951, /* 0.40 */
947, /* 0.41 */
944, /* 0.42 */
941, /* 0.43 */
937, /* 0.44 */
934, /* 0.45 */
930, /* 0.46 */
927, /* 0.47 */
923, /* 0.48 */
920, /* 0.49 */
916, /* 0.50 */
912, /* 0.51 */
909, /* 0.52 */
905, /* 0.53 */
901, /* 0.54 */
897, /* 0.55 */
893, /* 0.56 */
890, /* 0.57 */
886, /* 0.58 */
882, /* 0.59 */
878, /* 0.60 */
874, /* 0.61 */
870, /* 0.62 */
866, /* 0.63 */
862, /* 0.64 */
859, /* 0.65 */
855, /* 0.66 */
851, /* 0.67 */
847, /* 0.68 */
843, /* 0.69 */
839, /* 0.70 */
835, /* 0.71 */
831, /* 0.72 */
827, /* 0.73 */
823, /* 0.74 */
819, /* 0.75 */
815, /* 0.76 */
811, /* 0.77 */
807, /* 0.78 */
804, /* 0.79 */
800, /* 0.80 */
796, /* 0.81 */
792, /* 0.82 */
788, /* 0.83 */
784, /* 0.84 */
780, /* 0.85 */
776, /* 0.86 */
773, /* 0.87 */
769, /* 0.88 */
765, /* 0.89 */
761, /* 0.90 */
757, /* 0.91 */
754, /* 0.92 */
750, /* 0.93 */
746, /* 0.94 */
742, /* 0.95 */
739, /* 0.96 */
735, /* 0.97 */
731, /* 0.98 */
728, /* 0.99 */
724, /* 1.00 */
720, /* 1.01 */
};
void
icossin2(int x, int y, int *cosp, int *sinp)
{
int sinsign, cossign, tan, tan10, rem;
short *stp, *ctp;
if(x == 0){
if(y >= 0)
*sinp = ICOSSCALE, *cosp = 0;
else
*sinp = -ICOSSCALE, *cosp = 0;
return;
}
sinsign = cossign = 1;
if(x < 0){
cossign = -1;
x = -x;
}
if(y < 0){
sinsign = -1;
y = -y;
}
if(y > x){
tan = 1000*x/y;
tan10 = tan/10;
stp = &cosinus[tan10];
ctp = &sinus[tan10];
}else{
tan = 1000*y/x;
tan10 = tan/10;
stp = &sinus[tan10];
ctp = &cosinus[tan10];
}
rem = tan-(tan10*10);
*sinp = sinsign*(stp[0]+(stp[1]-stp[0])*rem/10);
*cosp = cossign*(ctp[0]+(ctp[1]-ctp[0])*rem/10);
}

35
src/libdraw/line.c Normal file
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@@ -0,0 +1,35 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
void
line(Image *dst, Point p0, Point p1, int end0, int end1, int radius, Image *src, Point sp)
{
lineop(dst, p0, p1, end0, end1, radius, src, sp, SoverD);
}
void
lineop(Image *dst, Point p0, Point p1, int end0, int end1, int radius, Image *src, Point sp, Drawop op)
{
uchar *a;
_setdrawop(dst->display, op);
a = bufimage(dst->display, 1+4+2*4+2*4+4+4+4+4+2*4);
if(a == 0){
fprint(2, "image line: %r\n");
return;
}
a[0] = 'L';
BPLONG(a+1, dst->id);
BPLONG(a+5, p0.x);
BPLONG(a+9, p0.y);
BPLONG(a+13, p1.x);
BPLONG(a+17, p1.y);
BPLONG(a+21, end0);
BPLONG(a+25, end1);
BPLONG(a+29, radius);
BPLONG(a+33, src->id);
BPLONG(a+37, sp.x);
BPLONG(a+41, sp.y);
}

54
src/libdraw/loadimage.c Normal file
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@@ -0,0 +1,54 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
int
loadimage(Image *i, Rectangle r, uchar *data, int ndata)
{
long dy;
int n, bpl;
uchar *a;
int chunk;
chunk = i->display->bufsize - 64;
if(!rectinrect(r, i->r)){
werrstr("loadimage: bad rectangle");
return -1;
}
bpl = bytesperline(r, i->depth);
n = bpl*Dy(r);
if(n > ndata){
werrstr("loadimage: insufficient data");
return -1;
}
ndata = 0;
while(r.max.y > r.min.y){
dy = r.max.y - r.min.y;
if(dy*bpl > chunk)
dy = chunk/bpl;
if(dy <= 0){
werrstr("loadimage: image too wide for buffer");
return -1;
}
n = dy*bpl;
a = bufimage(i->display, 21+n);
if(a == nil){
werrstr("bufimage failed");
return -1;
}
a[0] = 'y';
BPLONG(a+1, i->id);
BPLONG(a+5, r.min.x);
BPLONG(a+9, r.min.y);
BPLONG(a+13, r.max.x);
BPLONG(a+17, r.min.y+dy);
memmove(a+21, data, n);
ndata += n;
data += n;
r.min.y += dy;
}
if(flushimage(i->display, 0) < 0)
return -1;
return ndata;
}

55
src/libdraw/mkfont.c Normal file
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@@ -0,0 +1,55 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
/*
* Cobble fake font using existing subfont
*/
Font*
mkfont(Subfont *subfont, Rune min)
{
Font *font;
Cachefont *c;
font = malloc(sizeof(Font));
if(font == 0)
return 0;
memset(font, 0, sizeof(Font));
font->display = subfont->bits->display;
font->name = strdup("<synthetic>");
font->ncache = NFCACHE+NFLOOK;
font->nsubf = NFSUBF;
font->cache = malloc(font->ncache * sizeof(font->cache[0]));
font->subf = malloc(font->nsubf * sizeof(font->subf[0]));
if(font->name==0 || font->cache==0 || font->subf==0){
Err:
free(font->name);
free(font->cache);
free(font->subf);
free(font->sub);
free(font);
return 0;
}
memset(font->cache, 0, font->ncache*sizeof(font->cache[0]));
memset(font->subf, 0, font->nsubf*sizeof(font->subf[0]));
font->height = subfont->height;
font->ascent = subfont->ascent;
font->age = 1;
font->sub = malloc(sizeof(Cachefont*));
if(font->sub == 0)
goto Err;
c = malloc(sizeof(Cachefont));
if(c == 0)
goto Err;
font->nsub = 1;
font->sub[0] = c;
c->min = min;
c->max = min+subfont->n-1;
c->offset = 0;
c->name = 0; /* noticed by freeup() and agefont() */
c->subfontname = 0;
font->subf[0].age = 0;
font->subf[0].cf = c;
font->subf[0].f = subfont;
return font;
}

27
src/libdraw/newwindow.c Normal file
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@@ -0,0 +1,27 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
/* Connect us to new window, if possible */
int
newwindow(char *str)
{
int fd;
char *wsys;
char buf[256];
wsys = getenv("wsys");
if(wsys == nil)
return -1;
fd = open(wsys, ORDWR);
free(wsys);
if(fd < 0)
return -1;
rfork(RFNAMEG);
if(str)
snprint(buf, sizeof buf, "new %s", str);
else
strcpy(buf, "new");
return mount(fd, -1, "/dev", MBEFORE, buf);
}

87
src/libdraw/poly.c Normal file
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@@ -0,0 +1,87 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
static
uchar*
addcoord(uchar *p, int oldx, int newx)
{
int dx;
dx = newx-oldx;
/* does dx fit in 7 signed bits? */
if((unsigned)(dx - -0x40) <= 0x7F)
*p++ = dx&0x7F;
else{
*p++ = 0x80 | (newx&0x7F);
*p++ = newx>>7;
*p++ = newx>>15;
}
return p;
}
static
void
dopoly(int cmd, Image *dst, Point *pp, int np, int end0, int end1, int radius, Image *src, Point *sp, Drawop op)
{
uchar *a, *t, *u;
int i, ox, oy;
if(np == 0)
return;
t = malloc(np*2*3);
if(t == nil)
return;
u = t;
ox = oy = 0;
for(i=0; i<np; i++){
u = addcoord(u, ox, pp[i].x);
ox = pp[i].x;
u = addcoord(u, oy, pp[i].y);
oy = pp[i].y;
}
_setdrawop(dst->display, op);
a = bufimage(dst->display, 1+4+2+4+4+4+4+2*4+(u-t));
if(a == 0){
free(t);
fprint(2, "image poly: %r\n");
return;
}
a[0] = cmd;
BPLONG(a+1, dst->id);
BPSHORT(a+5, np-1);
BPLONG(a+7, end0);
BPLONG(a+11, end1);
BPLONG(a+15, radius);
BPLONG(a+19, src->id);
BPLONG(a+23, sp->x);
BPLONG(a+27, sp->y);
memmove(a+31, t, u-t);
free(t);
}
void
poly(Image *dst, Point *p, int np, int end0, int end1, int radius, Image *src, Point sp)
{
dopoly('p', dst, p, np, end0, end1, radius, src, &sp, SoverD);
}
void
polyop(Image *dst, Point *p, int np, int end0, int end1, int radius, Image *src, Point sp, Drawop op)
{
dopoly('p', dst, p, np, end0, end1, radius, src, &sp, op);
}
void
fillpoly(Image *dst, Point *p, int np, int wind, Image *src, Point sp)
{
dopoly('P', dst, p, np, wind, 0, 0, src, &sp, SoverD);
}
void
fillpolyop(Image *dst, Point *p, int np, int wind, Image *src, Point sp, Drawop op)
{
dopoly('P', dst, p, np, wind, 0, 0, src, &sp, op);
}

25
src/libdraw/rectclip.c Normal file
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@@ -0,0 +1,25 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
int
rectclip(Rectangle *rp, Rectangle b) /* first by reference, second by value */
{
Rectangle *bp = &b;
/*
* Expand rectXrect() in line for speed
*/
if((rp->min.x<bp->max.x && bp->min.x<rp->max.x &&
rp->min.y<bp->max.y && bp->min.y<rp->max.y)==0)
return 0;
/* They must overlap */
if(rp->min.x < bp->min.x)
rp->min.x = bp->min.x;
if(rp->min.y < bp->min.y)
rp->min.y = bp->min.y;
if(rp->max.x > bp->max.x)
rp->max.x = bp->max.x;
if(rp->max.y > bp->max.y)
rp->max.y = bp->max.y;
return 1;
}

21
src/libdraw/replclipr.c Normal file
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@@ -0,0 +1,21 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
void
replclipr(Image *i, int repl, Rectangle clipr)
{
uchar *b;
b = bufimage(i->display, 22);
b[0] = 'c';
BPLONG(b+1, i->id);
repl = repl!=0;
b[5] = repl;
BPLONG(b+6, clipr.min.x);
BPLONG(b+10, clipr.min.y);
BPLONG(b+14, clipr.max.x);
BPLONG(b+18, clipr.max.y);
i->repl = repl;
i->clipr = clipr;
}

99
src/libdraw/rgb.c Normal file
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@@ -0,0 +1,99 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
/*
* This original version, although fast and a true inverse of
* cmap2rgb, in the sense that rgb2cmap(cmap2rgb(c))
* returned the original color, does a terrible job for RGB
* triples that do not appear in the color map, so it has been
* replaced by the much slower version below, that loops
* over the color map looking for the nearest point in RGB
* space. There is no visual psychology reason for that
* criterion, but it's easy to implement and the results are
* far more pleasing.
*
int
rgb2cmap(int cr, int cg, int cb)
{
int r, g, b, v, cv;
if(cr < 0)
cr = 0;
else if(cr > 255)
cr = 255;
if(cg < 0)
cg = 0;
else if(cg > 255)
cg = 255;
if(cb < 0)
cb = 0;
else if(cb > 255)
cb = 255;
r = cr>>6;
g = cg>>6;
b = cb>>6;
cv = cr;
if(cg > cv)
cv = cg;
if(cb > cv)
cv = cb;
v = (cv>>4)&3;
return ((((r<<2)+v)<<4)+(((g<<2)+b+v-r)&15));
}
*/
int
rgb2cmap(int cr, int cg, int cb)
{
int i, r, g, b, sq;
u32int rgb;
int best, bestsq;
best = 0;
bestsq = 0x7FFFFFFF;
for(i=0; i<256; i++){
rgb = cmap2rgb(i);
r = (rgb>>16) & 0xFF;
g = (rgb>>8) & 0xFF;
b = (rgb>>0) & 0xFF;
sq = (r-cr)*(r-cr)+(g-cg)*(g-cg)+(b-cb)*(b-cb);
if(sq < bestsq){
bestsq = sq;
best = i;
}
}
return best;
}
int
cmap2rgb(int c)
{
int j, num, den, r, g, b, v, rgb;
r = c>>6;
v = (c>>4)&3;
j = (c-v+r)&15;
g = j>>2;
b = j&3;
den=r;
if(g>den)
den=g;
if(b>den)
den=b;
if(den==0) {
v *= 17;
rgb = (v<<16)|(v<<8)|v;
}
else{
num=17*(4*den+v);
rgb = ((r*num/den)<<16)|((g*num/den)<<8)|(b*num/den);
}
return rgb;
}
int
cmap2rgba(int c)
{
return (cmap2rgb(c)<<8)|0xFF;
}

51
src/libdraw/stringbg.c Normal file
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@@ -0,0 +1,51 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
Point
stringbg(Image *dst, Point pt, Image *src, Point sp, Font *f, char *s, Image *bg, Point bgp)
{
return _string(dst, pt, src, sp, f, s, nil, 1<<24, dst->clipr, bg, bgp, SoverD);
}
Point
stringbgop(Image *dst, Point pt, Image *src, Point sp, Font *f, char *s, Image *bg, Point bgp, Drawop op)
{
return _string(dst, pt, src, sp, f, s, nil, 1<<24, dst->clipr, bg, bgp, op);
}
Point
stringnbg(Image *dst, Point pt, Image *src, Point sp, Font *f, char *s, int len, Image *bg, Point bgp)
{
return _string(dst, pt, src, sp, f, s, nil, len, dst->clipr, bg, bgp, SoverD);
}
Point
stringnbgop(Image *dst, Point pt, Image *src, Point sp, Font *f, char *s, int len, Image *bg, Point bgp, Drawop op)
{
return _string(dst, pt, src, sp, f, s, nil, len, dst->clipr, bg, bgp, op);
}
Point
runestringbg(Image *dst, Point pt, Image *src, Point sp, Font *f, Rune *r, Image *bg, Point bgp)
{
return _string(dst, pt, src, sp, f, nil, r, 1<<24, dst->clipr, bg, bgp, SoverD);
}
Point
runestringbgop(Image *dst, Point pt, Image *src, Point sp, Font *f, Rune *r, Image *bg, Point bgp, Drawop op)
{
return _string(dst, pt, src, sp, f, nil, r, 1<<24, dst->clipr, bg, bgp, op);
}
Point
runestringnbg(Image *dst, Point pt, Image *src, Point sp, Font *f, Rune *r, int len, Image *bg, Point bgp)
{
return _string(dst, pt, src, sp, f, nil, r, len, dst->clipr, bg, bgp, SoverD);
}
Point
runestringnbgop(Image *dst, Point pt, Image *src, Point sp, Font *f, Rune *r, int len, Image *bg, Point bgp, Drawop op)
{
return _string(dst, pt, src, sp, f, nil, r, len, dst->clipr, bg, bgp, op);
}

65
src/libdraw/stringsubfont.c Normal file
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@@ -0,0 +1,65 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
Point
stringsubfont(Image *b, Point p, Image *color, Subfont *f, char *cs)
{
int w, width;
uchar *s;
Rune c;
Fontchar *i;
s = (uchar*)cs;
for(; c=*s; p.x+=width){
width = 0;
if(c < Runeself)
s++;
else{
w = chartorune(&c, (char*)s);
if(w == 0){
s++;
continue;
}
s += w;
}
if(c >= f->n)
continue;
i = f->info+c;
width = i->width;
draw(b, Rect(p.x+i->left, p.y+i->top, p.x+i->left+(i[1].x-i[0].x), p.y+i->bottom),
color, f->bits, Pt(i->x, i->top));
}
return p;
}
Point
strsubfontwidth(Subfont *f, char *cs)
{
Rune c;
Point p;
uchar *s;
Fontchar *i;
int w, width;
p = Pt(0, f->height);
s = (uchar*)cs;
for(; c=*s; p.x+=width){
width = 0;
if(c < Runeself)
s++;
else{
w = chartorune(&c, (char*)s);
if(w == 0){
s++;
continue;
}
s += w;
}
if(c >= f->n)
continue;
i = f->info+c;
width = i->width;
}
return p;
}

44
src/libdraw/test.c Normal file
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#include <u.h>
#include <libc.h>
#include <draw.h>
#include <event.h>
void
eresized(int new)
{
if(new && getwindow(display, Refnone) < 0){
fprint(2, "colors: can't reattach to window: %r\n");
exits("resized");
}
draw(screen, screen->r, display->white, nil, ZP);
flushimage(display, 1);
}
char *buttons[] =
{
"exit",
0
};
Menu menu =
{
buttons
};
void
main(int argc, char *argv[])
{
Mouse m;
initdraw(0,0,0);
eresized(0);
einit(Emouse);
for(;;){
m = emouse();
if(m.buttons == 4)
switch(emenuhit(3, &m, &menu)){
case 0:
exits(0);
}
}
}

214
src/libdraw/window.c Normal file
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@@ -0,0 +1,214 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
typedef struct Memimage Memimage;
static int screenid;
Screen*
allocscreen(Image *image, Image *fill, int public)
{
uchar *a;
Screen *s;
int id, try;
Display *d;
d = image->display;
if(d != fill->display){
werrstr("allocscreen: image and fill on different displays");
return 0;
}
s = malloc(sizeof(Screen));
if(s == 0)
return 0;
SET(id);
for(try=0; try<25; try++){
/* loop until find a free id */
a = bufimage(d, 1+4+4+4+1);
if(a == 0){
free(s);
return 0;
}
id = ++screenid;
a[0] = 'A';
BPLONG(a+1, id);
BPLONG(a+5, image->id);
BPLONG(a+9, fill->id);
a[13] = public;
if(flushimage(d, 0) != -1)
break;
}
s->display = d;
s->id = id;
s->image = image;
assert(s->image && s->image->chan != 0);
s->fill = fill;
return s;
}
Screen*
publicscreen(Display *d, int id, u32int chan)
{
uchar *a;
Screen *s;
s = malloc(sizeof(Screen));
if(s == 0)
return 0;
a = bufimage(d, 1+4+4);
if(a == 0){
Error:
free(s);
return 0;
}
a[0] = 'S';
BPLONG(a+1, id);
BPLONG(a+5, chan);
if(flushimage(d, 0) < 0)
goto Error;
s->display = d;
s->id = id;
s->image = 0;
s->fill = 0;
return s;
}
int
freescreen(Screen *s)
{
uchar *a;
Display *d;
if(s == 0)
return 0;
d = s->display;
a = bufimage(d, 1+4);
if(a == 0)
return -1;
a[0] = 'F';
BPLONG(a+1, s->id);
/*
* flush(1) because screen is likely holding last reference to
* window, and want it to disappear visually.
*/
if(flushimage(d, 1) < 0)
return -1;
free(s);
return 1;
}
Image*
allocwindow(Screen *s, Rectangle r, int ref, u32int val)
{
return _allocwindow(nil, s, r, ref, val);
}
Image*
_allocwindow(Image *i, Screen *s, Rectangle r, int ref, u32int val)
{
Display *d;
d = s->display;
i = _allocimage(i, d, r, d->screenimage->chan, 0, val, s->id, ref);
if(i == 0)
return 0;
i->screen = s;
i->next = s->display->windows;
s->display->windows = i;
return i;
}
static
void
topbottom(Image **w, int n, int top)
{
int i;
uchar *b;
Display *d;
if(n < 0){
Ridiculous:
fprint(2, "top/bottom: ridiculous number of windows\n");
return;
}
if(n == 0)
return;
if(n > (w[0]->display->bufsize-100)/4)
goto Ridiculous;
/*
* this used to check that all images were on the same screen.
* we don't know the screen associated with images we acquired
* by name. instead, check that all images are on the same display.
* the display will check that they are all on the same screen.
*/
d = w[0]->display;
for(i=1; i<n; i++)
if(w[i]->display != d){
fprint(2, "top/bottom: windows not on same screen\n");
return;
}
if(n==0)
return;
b = bufimage(d, 1+1+2+4*n);
b[0] = 't';
b[1] = top;
BPSHORT(b+2, n);
for(i=0; i<n; i++)
BPLONG(b+4+4*i, w[i]->id);
}
void
bottomwindow(Image *w)
{
if(w->screen == 0)
return;
topbottom(&w, 1, 0);
}
void
topwindow(Image *w)
{
if(w->screen == 0)
return;
topbottom(&w, 1, 1);
}
void
bottomnwindows(Image **w, int n)
{
topbottom(w, n, 0);
}
void
topnwindows(Image **w, int n)
{
topbottom(w, n, 1);
}
int
originwindow(Image *w, Point log, Point scr)
{
uchar *b;
Point delta;
flushimage(w->display, 0);
b = bufimage(w->display, 1+4+2*4+2*4);
if(b == nil)
return 0;
b[0] = 'o';
BPLONG(b+1, w->id);
BPLONG(b+5, log.x);
BPLONG(b+9, log.y);
BPLONG(b+13, scr.x);
BPLONG(b+17, scr.y);
if(flushimage(w->display, 1) < 0)
return -1;
delta = subpt(log, w->r.min);
w->r = rectaddpt(w->r, delta);
w->clipr = rectaddpt(w->clipr, delta);
return 1;
}

185
src/libdraw/writeimage.c Normal file
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@@ -0,0 +1,185 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
#define HSHIFT 3 /* HSHIFT==5 runs slightly faster, but hash table is 64x bigger */
#define NHASH (1<<(HSHIFT*NMATCH))
#define HMASK (NHASH-1)
#define hupdate(h, c) ((((h)<<HSHIFT)^(c))&HMASK)
typedef struct Hlist Hlist;
struct Hlist{
uchar *s;
Hlist *next, *prev;
};
int
writeimage(int fd, Image *i, int dolock)
{
uchar *outbuf, *outp, *eout; /* encoded data, pointer, end */
uchar *loutp; /* start of encoded line */
Hlist *hash; /* heads of hash chains of past strings */
Hlist *chain, *hp; /* hash chain members, pointer */
Hlist *cp; /* next Hlist to fall out of window */
int h; /* hash value */
uchar *line, *eline; /* input line, end pointer */
uchar *data, *edata; /* input buffer, end pointer */
ulong n; /* length of input buffer */
ulong nb; /* # of bytes returned by unloadimage */
int bpl; /* input line length */
int offs, runlen; /* offset, length of consumed data */
uchar dumpbuf[NDUMP]; /* dump accumulator */
int ndump; /* length of dump accumulator */
int miny, dy; /* y values while unloading input */
int chunk, ncblock;
Rectangle r;
uchar *p, *q, *s, *es, *t;
char hdr[11+5*12+1];
char cbuf[20];
chunk = i->display->bufsize - 32; /* a little room for header */
r = i->r;
bpl = bytesperline(r, i->depth);
n = Dy(r)*bpl;
data = malloc(n);
ncblock = _compblocksize(r, i->depth);
outbuf = malloc(ncblock);
hash = malloc(NHASH*sizeof(Hlist));
chain = malloc(NMEM*sizeof(Hlist));
if(data == 0 || outbuf == 0 || hash == 0 || chain == 0){
ErrOut:
free(data);
free(outbuf);
free(hash);
free(chain);
return -1;
}
for(miny = r.min.y; miny != r.max.y; miny += dy){
dy = r.max.y-miny;
if(dy*bpl > chunk)
dy = chunk/bpl;
if(dolock)
lockdisplay(i->display);
nb = unloadimage(i, Rect(r.min.x, miny, r.max.x, miny+dy),
data+(miny-r.min.y)*bpl, dy*bpl);
if(dolock)
unlockdisplay(i->display);
if(nb != dy*bpl)
goto ErrOut;
}
sprint(hdr, "compressed\n%11s %11d %11d %11d %11d ",
chantostr(cbuf, i->chan), r.min.x, r.min.y, r.max.x, r.max.y);
if(write(fd, hdr, 11+5*12) != 11+5*12)
goto ErrOut;
edata = data+n;
eout = outbuf+ncblock;
line = data;
r.max.y = r.min.y;
while(line != edata){
memset(hash, 0, NHASH*sizeof(Hlist));
memset(chain, 0, NMEM*sizeof(Hlist));
cp = chain;
h = 0;
outp = outbuf;
for(n = 0; n != NMATCH; n++)
h = hupdate(h, line[n]);
loutp = outbuf;
while(line != edata){
ndump = 0;
eline = line+bpl;
for(p = line; p != eline; ){
if(eline-p < NRUN)
es = eline;
else
es = p+NRUN;
q = 0;
runlen = 0;
for(hp = hash[h].next; hp; hp = hp->next){
s = p + runlen;
if(s >= es)
continue;
t = hp->s + runlen;
for(; s >= p; s--)
if(*s != *t--)
goto matchloop;
t += runlen+2;
s += runlen+2;
for(; s < es; s++)
if(*s != *t++)
break;
n = s-p;
if(n > runlen){
runlen = n;
q = hp->s;
if(n == NRUN)
break;
}
matchloop: ;
}
if(runlen < NMATCH){
if(ndump == NDUMP){
if(eout-outp < ndump+1)
goto Bfull;
*outp++ = ndump-1+128;
memmove(outp, dumpbuf, ndump);
outp += ndump;
ndump = 0;
}
dumpbuf[ndump++] = *p;
runlen = 1;
}
else{
if(ndump != 0){
if(eout-outp < ndump+1)
goto Bfull;
*outp++ = ndump-1+128;
memmove(outp, dumpbuf, ndump);
outp += ndump;
ndump = 0;
}
offs = p-q-1;
if(eout-outp < 2)
goto Bfull;
*outp++ = ((runlen-NMATCH)<<2) + (offs>>8);
*outp++ = offs&255;
}
for(q = p+runlen; p != q; p++){
if(cp->prev)
cp->prev->next = 0;
cp->next = hash[h].next;
cp->prev = &hash[h];
if(cp->next)
cp->next->prev = cp;
cp->prev->next = cp;
cp->s = p;
if(++cp == &chain[NMEM])
cp = chain;
if(edata-p > NMATCH)
h = hupdate(h, p[NMATCH]);
}
}
if(ndump != 0){
if(eout-outp < ndump+1)
goto Bfull;
*outp++ = ndump-1+128;
memmove(outp, dumpbuf, ndump);
outp += ndump;
}
line = eline;
loutp = outp;
r.max.y++;
}
Bfull:
if(loutp == outbuf)
goto ErrOut;
n = loutp-outbuf;
sprint(hdr, "%11d %11ld ", r.max.y, n);
write(fd, hdr, 2*12);
write(fd, outbuf, n);
r.min.y = r.max.y;
}
free(data);
free(outbuf);
free(hash);
free(chain);
return 0;
}

45
src/libdraw/writesubfont.c Normal file
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@@ -0,0 +1,45 @@
#include <u.h>
#include <libc.h>
#include <draw.h>
static
void
packinfo(Fontchar *fc, uchar *p, int n)
{
int j;
for(j=0; j<=n; j++){
p[0] = fc->x;
p[1] = fc->x>>8;
p[2] = fc->top;
p[3] = fc->bottom;
p[4] = fc->left;
p[5] = fc->width;
fc++;
p += 6;
}
}
int
writesubfont(int fd, Subfont *f)
{
char hdr[3*12+1];
uchar *data;
int nb;
sprint(hdr, "%11d %11d %11d ", f->n, f->height, f->ascent);
if(write(fd, hdr, 3*12) != 3*12){
Err:
werrstr("writesubfont: bad write: %r");
return -1;
}
nb = 6*(f->n+1);
data = malloc(nb);
if(data == nil)
return -1;
packinfo(f->info, data, f->n);
if(write(fd, data, nb) != nb)
goto Err;
free(data);
return 0;
}