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-rw-r--r--src/libdraw/devdraw.c1608
1 files changed, 0 insertions, 1608 deletions
diff --git a/src/libdraw/devdraw.c b/src/libdraw/devdraw.c
deleted file mode 100644
index f4a3fd96..00000000
--- a/src/libdraw/devdraw.c
+++ /dev/null
@@ -1,1608 +0,0 @@
-/*
- * /dev/draw simulator -- handles the messages prepared by the draw library.
- * Includes all the memlayer code even though most programs don't use it.
- * This whole approach is overkill, but cpu is cheap and it keeps things simple.
- */
-
-#include <u.h>
-#include <libc.h>
-#include <draw.h>
-#include <memdraw.h>
-#include <memlayer.h>
-
-extern void _flushmemscreen(Rectangle);
-
-#define NHASH (1<<5)
-#define HASHMASK (NHASH-1)
-
-typedef struct Client Client;
-typedef struct Draw Draw;
-typedef struct DImage DImage;
-typedef struct DScreen DScreen;
-typedef struct CScreen CScreen;
-typedef struct FChar FChar;
-typedef struct Refresh Refresh;
-typedef struct Refx Refx;
-typedef struct DName DName;
-
-struct Draw
-{
- QLock lk;
- int clientid;
- int nclient;
- Client* client[1];
- int nname;
- DName* name;
- int vers;
- int softscreen;
-};
-
-struct Client
-{
- /*Ref r;*/
- DImage* dimage[NHASH];
- CScreen* cscreen;
- Refresh* refresh;
- Rendez refrend;
- uchar* readdata;
- int nreaddata;
- int busy;
- int clientid;
- int slot;
- int refreshme;
- int infoid;
- int op;
-};
-
-struct Refresh
-{
- DImage* dimage;
- Rectangle r;
- Refresh* next;
-};
-
-struct Refx
-{
- Client* client;
- DImage* dimage;
-};
-
-struct DName
-{
- char *name;
- Client *client;
- DImage* dimage;
- int vers;
-};
-
-struct FChar
-{
- int minx; /* left edge of bits */
- int maxx; /* right edge of bits */
- uchar miny; /* first non-zero scan-line */
- uchar maxy; /* last non-zero scan-line + 1 */
- schar left; /* offset of baseline */
- uchar width; /* width of baseline */
-};
-
-/*
- * Reference counts in DImages:
- * one per open by original client
- * one per screen image or fill
- * one per image derived from this one by name
- */
-struct DImage
-{
- int id;
- int ref;
- char *name;
- int vers;
- Memimage* image;
- int ascent;
- int nfchar;
- FChar* fchar;
- DScreen* dscreen; /* 0 if not a window */
- DImage* fromname; /* image this one is derived from, by name */
- DImage* next;
-};
-
-struct CScreen
-{
- DScreen* dscreen;
- CScreen* next;
-};
-
-struct DScreen
-{
- int id;
- int public;
- int ref;
- DImage *dimage;
- DImage *dfill;
- Memscreen* screen;
- Client* owner;
- DScreen* next;
-};
-
-static Draw sdraw;
-static Client *client0;
-static Memimage *screenimage;
-static Rectangle flushrect;
-static int waste;
-static DScreen* dscreen;
-static int drawuninstall(Client*, int);
-static Memimage* drawinstall(Client*, int, Memimage*, DScreen*);
-static void drawfreedimage(DImage*);
-
-void
-_initdisplaymemimage(Display *d, Memimage *m)
-{
- screenimage = m;
- m->screenref = 1;
- client0 = mallocz(sizeof(Client), 1);
- if(client0 == nil){
- fprint(2, "initdraw: allocating client0: out of memory");
- abort();
- }
- client0->slot = 0;
- client0->clientid = ++sdraw.clientid;
- client0->op = SoverD;
- sdraw.client[0] = client0;
- sdraw.nclient = 1;
- sdraw.softscreen = 1;
-}
-
-void
-_drawreplacescreenimage(Memimage *m)
-{
- /*
- * Replace the screen image because the screen
- * was resized.
- *
- * In theory there should only be one reference
- * to the current screen image, and that's through
- * client0's image 0, installed a few lines above.
- * Once the client drops the image, the underlying backing
- * store freed properly. The client is being notified
- * about the resize through external means, so all we
- * need to do is this assignment.
- */
- Memimage *om;
-
- qlock(&sdraw.lk);
- om = screenimage;
- screenimage = m;
- m->screenref = 1;
- if(om && --om->screenref == 0){
- _freememimage(om);
- }
- qunlock(&sdraw.lk);
-}
-
-static
-void
-drawrefreshscreen(DImage *l, Client *client)
-{
- while(l != nil && l->dscreen == nil)
- l = l->fromname;
- if(l != nil && l->dscreen->owner != client)
- l->dscreen->owner->refreshme = 1;
-}
-
-static
-void
-drawrefresh(Memimage *m, Rectangle r, void *v)
-{
- Refx *x;
- DImage *d;
- Client *c;
- Refresh *ref;
-
- USED(m);
-
- if(v == 0)
- return;
- x = v;
- c = x->client;
- d = x->dimage;
- for(ref=c->refresh; ref; ref=ref->next)
- if(ref->dimage == d){
- combinerect(&ref->r, r);
- return;
- }
- ref = mallocz(sizeof(Refresh), 1);
- if(ref){
- ref->dimage = d;
- ref->r = r;
- ref->next = c->refresh;
- c->refresh = ref;
- }
-}
-
-static void
-addflush(Rectangle r)
-{
- int abb, ar, anbb;
- Rectangle nbb;
-
- if(sdraw.softscreen==0 || !rectclip(&r, screenimage->r))
- return;
-
- if(flushrect.min.x >= flushrect.max.x){
- flushrect = r;
- waste = 0;
- return;
- }
- nbb = flushrect;
- combinerect(&nbb, r);
- ar = Dx(r)*Dy(r);
- abb = Dx(flushrect)*Dy(flushrect);
- anbb = Dx(nbb)*Dy(nbb);
- /*
- * Area of new waste is area of new bb minus area of old bb,
- * less the area of the new segment, which we assume is not waste.
- * This could be negative, but that's OK.
- */
- waste += anbb-abb - ar;
- if(waste < 0)
- waste = 0;
- /*
- * absorb if:
- * total area is small
- * waste is less than half total area
- * rectangles touch
- */
- if(anbb<=1024 || waste*2<anbb || rectXrect(flushrect, r)){
- flushrect = nbb;
- return;
- }
- /* emit current state */
- if(flushrect.min.x < flushrect.max.x)
- _flushmemscreen(flushrect);
- flushrect = r;
- waste = 0;
-}
-
-static
-void
-dstflush(int dstid, Memimage *dst, Rectangle r)
-{
- Memlayer *l;
-
- if(dstid == 0){
- combinerect(&flushrect, r);
- return;
- }
- /* how can this happen? -rsc, dec 12 2002 */
- if(dst == 0){
- print("nil dstflush\n");
- return;
- }
- l = dst->layer;
- if(l == nil)
- return;
- do{
- if(l->screen->image->data != screenimage->data)
- return;
- r = rectaddpt(r, l->delta);
- l = l->screen->image->layer;
- }while(l);
- addflush(r);
-}
-
-static
-void
-drawflush(void)
-{
- if(flushrect.min.x < flushrect.max.x)
- _flushmemscreen(flushrect);
- flushrect = Rect(10000, 10000, -10000, -10000);
-}
-
-static
-int
-drawcmp(char *a, char *b, int n)
-{
- if(strlen(a) != n)
- return 1;
- return memcmp(a, b, n);
-}
-
-static
-DName*
-drawlookupname(int n, char *str)
-{
- DName *name, *ename;
-
- name = sdraw.name;
- ename = &name[sdraw.nname];
- for(; name<ename; name++)
- if(drawcmp(name->name, str, n) == 0)
- return name;
- return 0;
-}
-
-static
-int
-drawgoodname(DImage *d)
-{
- DName *n;
-
- /* if window, validate the screen's own images */
- if(d->dscreen)
- if(drawgoodname(d->dscreen->dimage) == 0
- || drawgoodname(d->dscreen->dfill) == 0)
- return 0;
- if(d->name == nil)
- return 1;
- n = drawlookupname(strlen(d->name), d->name);
- if(n==nil || n->vers!=d->vers)
- return 0;
- return 1;
-}
-
-static
-DImage*
-drawlookup(Client *client, int id, int checkname)
-{
- DImage *d;
-
- d = client->dimage[id&HASHMASK];
- while(d){
- if(d->id == id){
- /*
- * BUG: should error out but too hard.
- * Return 0 instead.
- */
- if(checkname && !drawgoodname(d))
- return 0;
- return d;
- }
- d = d->next;
- }
- return 0;
-}
-
-static
-DScreen*
-drawlookupdscreen(int id)
-{
- DScreen *s;
-
- s = dscreen;
- while(s){
- if(s->id == id)
- return s;
- s = s->next;
- }
- return 0;
-}
-
-static
-DScreen*
-drawlookupscreen(Client *client, int id, CScreen **cs)
-{
- CScreen *s;
-
- s = client->cscreen;
- while(s){
- if(s->dscreen->id == id){
- *cs = s;
- return s->dscreen;
- }
- s = s->next;
- }
- /* caller must check! */
- return 0;
-}
-
-static
-Memimage*
-drawinstall(Client *client, int id, Memimage *i, DScreen *dscreen)
-{
- DImage *d;
-
- d = mallocz(sizeof(DImage), 1);
- if(d == 0)
- return 0;
- d->id = id;
- d->ref = 1;
- d->name = 0;
- d->vers = 0;
- d->image = i;
- if(i->screenref)
- ++i->screenref;
- d->nfchar = 0;
- d->fchar = 0;
- d->fromname = 0;
- d->dscreen = dscreen;
- d->next = client->dimage[id&HASHMASK];
- client->dimage[id&HASHMASK] = d;
- return i;
-}
-
-static
-Memscreen*
-drawinstallscreen(Client *client, DScreen *d, int id, DImage *dimage, DImage *dfill, int public)
-{
- Memscreen *s;
- CScreen *c;
-
- c = mallocz(sizeof(CScreen), 1);
- if(dimage && dimage->image && dimage->image->chan == 0){
- print("bad image %p in drawinstallscreen", dimage->image);
- abort();
- }
-
- if(c == 0)
- return 0;
- if(d == 0){
- d = mallocz(sizeof(DScreen), 1);
- if(d == 0){
- free(c);
- return 0;
- }
- s = mallocz(sizeof(Memscreen), 1);
- if(s == 0){
- free(c);
- free(d);
- return 0;
- }
- s->frontmost = 0;
- s->rearmost = 0;
- d->dimage = dimage;
- if(dimage){
- s->image = dimage->image;
- dimage->ref++;
- }
- d->dfill = dfill;
- if(dfill){
- s->fill = dfill->image;
- dfill->ref++;
- }
- d->ref = 0;
- d->id = id;
- d->screen = s;
- d->public = public;
- d->next = dscreen;
- d->owner = client;
- dscreen = d;
- }
- c->dscreen = d;
- d->ref++;
- c->next = client->cscreen;
- client->cscreen = c;
- return d->screen;
-}
-
-static
-void
-drawdelname(DName *name)
-{
- int i;
-
- i = name-sdraw.name;
- memmove(name, name+1, (sdraw.nname-(i+1))*sizeof(DName));
- sdraw.nname--;
-}
-
-static
-void
-drawfreedscreen(DScreen *this)
-{
- DScreen *ds, *next;
-
- this->ref--;
- if(this->ref < 0)
- print("negative ref in drawfreedscreen\n");
- if(this->ref > 0)
- return;
- ds = dscreen;
- if(ds == this){
- dscreen = this->next;
- goto Found;
- }
- while(next = ds->next){ /* assign = */
- if(next == this){
- ds->next = this->next;
- goto Found;
- }
- ds = next;
- }
- /*
- * Should signal Enodrawimage, but too hard.
- */
- return;
-
- Found:
- if(this->dimage)
- drawfreedimage(this->dimage);
- if(this->dfill)
- drawfreedimage(this->dfill);
- free(this->screen);
- free(this);
-}
-
-static
-void
-drawfreedimage(DImage *dimage)
-{
- int i;
- Memimage *l;
- DScreen *ds;
-
- dimage->ref--;
- if(dimage->ref < 0)
- print("negative ref in drawfreedimage\n");
- if(dimage->ref > 0)
- return;
-
- /* any names? */
- for(i=0; i<sdraw.nname; )
- if(sdraw.name[i].dimage == dimage)
- drawdelname(sdraw.name+i);
- else
- i++;
- if(dimage->fromname){ /* acquired by name; owned by someone else*/
- drawfreedimage(dimage->fromname);
- goto Return;
- }
- ds = dimage->dscreen;
- l = dimage->image;
- dimage->dscreen = nil; /* paranoia */
- dimage->image = nil;
- if(ds){
- if(l->data == screenimage->data)
- addflush(l->layer->screenr);
- if(l->layer->refreshfn == drawrefresh) /* else true owner will clean up */
- free(l->layer->refreshptr);
- l->layer->refreshptr = nil;
- if(drawgoodname(dimage))
- memldelete(l);
- else
- memlfree(l);
- drawfreedscreen(ds);
- }else{
- if(l->screenref==0)
- freememimage(l);
- else if(--l->screenref==0)
- _freememimage(l);
- }
- Return:
- free(dimage->fchar);
- free(dimage);
-}
-
-static
-void
-drawuninstallscreen(Client *client, CScreen *this)
-{
- CScreen *cs, *next;
-
- cs = client->cscreen;
- if(cs == this){
- client->cscreen = this->next;
- drawfreedscreen(this->dscreen);
- free(this);
- return;
- }
- while(next = cs->next){ /* assign = */
- if(next == this){
- cs->next = this->next;
- drawfreedscreen(this->dscreen);
- free(this);
- return;
- }
- cs = next;
- }
-}
-
-static
-int
-drawuninstall(Client *client, int id)
-{
- DImage *d, **l;
-
- for(l=&client->dimage[id&HASHMASK]; (d=*l) != nil; l=&d->next){
- if(d->id == id){
- *l = d->next;
- drawfreedimage(d);
- return 0;
- }
- }
- return -1;
-}
-
-static
-int
-drawaddname(Client *client, DImage *di, int n, char *str, char **err)
-{
- DName *name, *ename, *new, *t;
- char *ns;
-
- name = sdraw.name;
- ename = &name[sdraw.nname];
- for(; name<ename; name++)
- if(drawcmp(name->name, str, n) == 0){
- *err = "image name in use";
- return -1;
- }
- t = mallocz((sdraw.nname+1)*sizeof(DName), 1);
- ns = malloc(n+1);
- if(t == nil || ns == nil){
- free(t);
- free(ns);
- *err = "out of memory";
- return -1;
- }
- memmove(t, sdraw.name, sdraw.nname*sizeof(DName));
- free(sdraw.name);
- sdraw.name = t;
- new = &sdraw.name[sdraw.nname++];
- new->name = ns;
- memmove(new->name, str, n);
- new->name[n] = 0;
- new->dimage = di;
- new->client = client;
- new->vers = ++sdraw.vers;
- return 0;
-}
-
-static int
-drawclientop(Client *cl)
-{
- int op;
-
- op = cl->op;
- cl->op = SoverD;
- return op;
-}
-
-static
-Memimage*
-drawimage(Client *client, uchar *a)
-{
- DImage *d;
-
- d = drawlookup(client, BGLONG(a), 1);
- if(d == nil)
- return nil; /* caller must check! */
- return d->image;
-}
-
-static
-void
-drawrectangle(Rectangle *r, uchar *a)
-{
- r->min.x = BGLONG(a+0*4);
- r->min.y = BGLONG(a+1*4);
- r->max.x = BGLONG(a+2*4);
- r->max.y = BGLONG(a+3*4);
-}
-
-static
-void
-drawpoint(Point *p, uchar *a)
-{
- p->x = BGLONG(a+0*4);
- p->y = BGLONG(a+1*4);
-}
-
-static
-Point
-drawchar(Memimage *dst, Point p, Memimage *src, Point *sp, DImage *font, int index, int op)
-{
- FChar *fc;
- Rectangle r;
- Point sp1;
-
- fc = &font->fchar[index];
- r.min.x = p.x+fc->left;
- r.min.y = p.y-(font->ascent-fc->miny);
- r.max.x = r.min.x+(fc->maxx-fc->minx);
- r.max.y = r.min.y+(fc->maxy-fc->miny);
- sp1.x = sp->x+fc->left;
- sp1.y = sp->y+fc->miny;
- memdraw(dst, r, src, sp1, font->image, Pt(fc->minx, fc->miny), op);
- p.x += fc->width;
- sp->x += fc->width;
- return p;
-}
-
-static
-uchar*
-drawcoord(uchar *p, uchar *maxp, int oldx, int *newx)
-{
- int b, x;
-
- if(p >= maxp)
- return nil;
- b = *p++;
- x = b & 0x7F;
- if(b & 0x80){
- if(p+1 >= maxp)
- return nil;
- x |= *p++ << 7;
- x |= *p++ << 15;
- if(x & (1<<22))
- x |= ~0<<23;
- }else{
- if(b & 0x40)
- x |= ~0<<7;
- x += oldx;
- }
- *newx = x;
- return p;
-}
-
-int
-_drawmsgread(Display *d, void *a, int n)
-{
- Client *cl;
-
- qlock(&sdraw.lk);
- cl = client0;
- if(cl->readdata == nil){
- werrstr("no draw data");
- goto err;
- }
- if(n < cl->nreaddata){
- werrstr("short read");
- goto err;
- }
- n = cl->nreaddata;
- memmove(a, cl->readdata, cl->nreaddata);
- free(cl->readdata);
- cl->readdata = nil;
- qunlock(&sdraw.lk);
- return n;
-
-err:
- qunlock(&sdraw.lk);
- return -1;
-}
-
-int
-_drawmsgwrite(Display *d, void *v, int n)
-{
- char cbuf[40], *err, ibuf[12*12+1], *s;
- int c, ci, doflush, dstid, e0, e1, esize, j, m;
- int ni, nw, oesize, oldn, op, ox, oy, repl, scrnid, y;
- uchar *a, refresh, *u;
- u32int chan, value;
- Client *client;
- CScreen *cs;
- DImage *di, *ddst, *dsrc, *font, *ll;
- DName *dn;
- DScreen *dscrn;
- FChar *fc;
- Memimage *dst, *i, *l, **lp, *mask, *src;
- Memscreen *scrn;
- Point p, *pp, q, sp;
- Rectangle clipr, r;
- Refreshfn reffn;
- Refx *refx;
-
- qlock(&sdraw.lk);
- d->obufp = d->obuf;
- a = v;
- m = 0;
- oldn = n;
- client = client0;
-
- while((n-=m) > 0){
- a += m;
-/*fprint(2, "msgwrite %d(%d)...", n, *a); */
- switch(*a){
- default:
-/*fprint(2, "bad command %d\n", *a); */
- err = "bad draw command";
- goto error;
-
- /* allocate: 'b' id[4] screenid[4] refresh[1] chan[4] repl[1]
- R[4*4] clipR[4*4] rrggbbaa[4]
- */
- case 'b':
- m = 1+4+4+1+4+1+4*4+4*4+4;
- if(n < m)
- goto Eshortdraw;
- dstid = BGLONG(a+1);
- scrnid = BGSHORT(a+5);
- refresh = a[9];
- chan = BGLONG(a+10);
- repl = a[14];
- drawrectangle(&r, a+15);
- drawrectangle(&clipr, a+31);
- value = BGLONG(a+47);
- if(drawlookup(client, dstid, 0))
- goto Eimageexists;
- if(scrnid){
- dscrn = drawlookupscreen(client, scrnid, &cs);
- if(!dscrn)
- goto Enodrawscreen;
- scrn = dscrn->screen;
- if(repl || chan!=scrn->image->chan){
- err = "image parameters incompatibile with screen";
- goto error;
- }
- reffn = 0;
- switch(refresh){
- case Refbackup:
- break;
- case Refnone:
- reffn = memlnorefresh;
- break;
- case Refmesg:
- reffn = drawrefresh;
- break;
- default:
- err = "unknown refresh method";
- goto error;
- }
- l = memlalloc(scrn, r, reffn, 0, value);
- if(l == 0)
- goto Edrawmem;
- addflush(l->layer->screenr);
- l->clipr = clipr;
- rectclip(&l->clipr, r);
- if(drawinstall(client, dstid, l, dscrn) == 0){
- memldelete(l);
- goto Edrawmem;
- }
- dscrn->ref++;
- if(reffn){
- refx = nil;
- if(reffn == drawrefresh){
- refx = mallocz(sizeof(Refx), 1);
- if(refx == 0){
- if(drawuninstall(client, dstid) < 0)
- goto Enodrawimage;
- goto Edrawmem;
- }
- refx->client = client;
- refx->dimage = drawlookup(client, dstid, 1);
- }
- memlsetrefresh(l, reffn, refx);
- }
- continue;
- }
- i = allocmemimage(r, chan);
- if(i == 0)
- goto Edrawmem;
- if(repl)
- i->flags |= Frepl;
- i->clipr = clipr;
- if(!repl)
- rectclip(&i->clipr, r);
- if(drawinstall(client, dstid, i, 0) == 0){
- freememimage(i);
- goto Edrawmem;
- }
- memfillcolor(i, value);
- continue;
-
- /* allocate screen: 'A' id[4] imageid[4] fillid[4] public[1] */
- case 'A':
- m = 1+4+4+4+1;
- if(n < m)
- goto Eshortdraw;
- dstid = BGLONG(a+1);
- if(dstid == 0)
- goto Ebadarg;
- if(drawlookupdscreen(dstid))
- goto Escreenexists;
- ddst = drawlookup(client, BGLONG(a+5), 1);
- dsrc = drawlookup(client, BGLONG(a+9), 1);
- if(ddst==0 || dsrc==0)
- goto Enodrawimage;
- if(drawinstallscreen(client, 0, dstid, ddst, dsrc, a[13]) == 0)
- goto Edrawmem;
- continue;
-
- /* set repl and clip: 'c' dstid[4] repl[1] clipR[4*4] */
- case 'c':
- m = 1+4+1+4*4;
- if(n < m)
- goto Eshortdraw;
- ddst = drawlookup(client, BGLONG(a+1), 1);
- if(ddst == nil)
- goto Enodrawimage;
- if(ddst->name){
- err = "can't change repl/clipr of shared image";
- goto error;
- }
- dst = ddst->image;
- if(a[5])
- dst->flags |= Frepl;
- drawrectangle(&dst->clipr, a+6);
- continue;
-
- /* draw: 'd' dstid[4] srcid[4] maskid[4] R[4*4] P[2*4] P[2*4] */
- case 'd':
- m = 1+4+4+4+4*4+2*4+2*4;
- if(n < m)
- goto Eshortdraw;
- dst = drawimage(client, a+1);
- dstid = BGLONG(a+1);
- src = drawimage(client, a+5);
- mask = drawimage(client, a+9);
- if(!dst || !src || !mask)
- goto Enodrawimage;
- drawrectangle(&r, a+13);
- drawpoint(&p, a+29);
- drawpoint(&q, a+37);
- op = drawclientop(client);
- memdraw(dst, r, src, p, mask, q, op);
- dstflush(dstid, dst, r);
- continue;
-
- /* toggle debugging: 'D' val[1] */
- case 'D':
- m = 1+1;
- if(n < m)
- goto Eshortdraw;
- drawdebug = a[1];
- continue;
-
- /* ellipse: 'e' dstid[4] srcid[4] center[2*4] a[4] b[4] thick[4] sp[2*4] alpha[4] phi[4]*/
- case 'e':
- case 'E':
- m = 1+4+4+2*4+4+4+4+2*4+2*4;
- if(n < m)
- goto Eshortdraw;
- dst = drawimage(client, a+1);
- dstid = BGLONG(a+1);
- src = drawimage(client, a+5);
- if(!dst || !src)
- goto Enodrawimage;
- drawpoint(&p, a+9);
- e0 = BGLONG(a+17);
- e1 = BGLONG(a+21);
- if(e0<0 || e1<0){
- err = "invalid ellipse semidiameter";
- goto error;
- }
- j = BGLONG(a+25);
- if(j < 0){
- err = "negative ellipse thickness";
- goto error;
- }
-
- drawpoint(&sp, a+29);
- c = j;
- if(*a == 'E')
- c = -1;
- ox = BGLONG(a+37);
- oy = BGLONG(a+41);
- op = drawclientop(client);
- /* high bit indicates arc angles are present */
- if(ox & ((ulong)1<<31)){
- if((ox & ((ulong)1<<30)) == 0)
- ox &= ~((ulong)1<<31);
- memarc(dst, p, e0, e1, c, src, sp, ox, oy, op);
- }else
- memellipse(dst, p, e0, e1, c, src, sp, op);
- dstflush(dstid, dst, Rect(p.x-e0-j, p.y-e1-j, p.x+e0+j+1, p.y+e1+j+1));
- continue;
-
- /* free: 'f' id[4] */
- case 'f':
- m = 1+4;
- if(n < m)
- goto Eshortdraw;
- ll = drawlookup(client, BGLONG(a+1), 0);
- if(ll && ll->dscreen && ll->dscreen->owner != client)
- ll->dscreen->owner->refreshme = 1;
- if(drawuninstall(client, BGLONG(a+1)) < 0)
- goto Enodrawimage;
- continue;
-
- /* free screen: 'F' id[4] */
- case 'F':
- m = 1+4;
- if(n < m)
- goto Eshortdraw;
- if(!drawlookupscreen(client, BGLONG(a+1), &cs))
- goto Enodrawscreen;
- drawuninstallscreen(client, cs);
- continue;
-
- /* initialize font: 'i' fontid[4] nchars[4] ascent[1] */
- case 'i':
- m = 1+4+4+1;
- if(n < m)
- goto Eshortdraw;
- dstid = BGLONG(a+1);
- if(dstid == 0){
- err = "can't use display as font";
- goto error;
- }
- font = drawlookup(client, dstid, 1);
- if(font == 0)
- goto Enodrawimage;
- if(font->image->layer){
- err = "can't use window as font";
- goto error;
- }
- ni = BGLONG(a+5);
- if(ni<=0 || ni>4096){
- err = "bad font size (4096 chars max)";
- goto error;
- }
- free(font->fchar); /* should we complain if non-zero? */
- font->fchar = mallocz(ni*sizeof(FChar), 1);
- if(font->fchar == 0){
- err = "no memory for font";
- goto error;
- }
- memset(font->fchar, 0, ni*sizeof(FChar));
- font->nfchar = ni;
- font->ascent = a[9];
- continue;
-
- /* set image 0 to screen image */
- case 'J':
- m = 1;
- if(n < m)
- goto Eshortdraw;
- if(drawlookup(client, 0, 0))
- goto Eimageexists;
- drawinstall(client, 0, screenimage, 0);
- client->infoid = 0;
- continue;
-
- /* get image info: 'I' */
- case 'I':
- m = 1;
- if(n < m)
- goto Eshortdraw;
- if(client->infoid < 0)
- goto Enodrawimage;
- if(client->infoid == 0){
- i = screenimage;
- if(i == nil)
- goto Enodrawimage;
- }else{
- di = drawlookup(client, client->infoid, 1);
- if(di == nil)
- goto Enodrawimage;
- i = di->image;
- }
- ni = sprint(ibuf, "%11d %11d %11s %11d %11d %11d %11d %11d"
- " %11d %11d %11d %11d ",
- client->clientid,
- client->infoid,
- chantostr(cbuf, i->chan),
- (i->flags&Frepl)==Frepl,
- i->r.min.x, i->r.min.y, i->r.max.x, i->r.max.y,
- i->clipr.min.x, i->clipr.min.y,
- i->clipr.max.x, i->clipr.max.y);
- free(client->readdata);
- client->readdata = malloc(ni);
- if(client->readdata == nil)
- goto Enomem;
- memmove(client->readdata, ibuf, ni);
- client->nreaddata = ni;
- client->infoid = -1;
- continue;
-
- /* load character: 'l' fontid[4] srcid[4] index[2] R[4*4] P[2*4] left[1] width[1] */
- case 'l':
- m = 1+4+4+2+4*4+2*4+1+1;
- if(n < m)
- goto Eshortdraw;
- font = drawlookup(client, BGLONG(a+1), 1);
- if(font == 0)
- goto Enodrawimage;
- if(font->nfchar == 0)
- goto Enotfont;
- src = drawimage(client, a+5);
- if(!src)
- goto Enodrawimage;
- ci = BGSHORT(a+9);
- if(ci >= font->nfchar)
- goto Eindex;
- drawrectangle(&r, a+11);
- drawpoint(&p, a+27);
- memdraw(font->image, r, src, p, memopaque, p, S);
- fc = &font->fchar[ci];
- fc->minx = r.min.x;
- fc->maxx = r.max.x;
- fc->miny = r.min.y;
- fc->maxy = r.max.y;
- fc->left = a[35];
- fc->width = a[36];
- continue;
-
- /* draw line: 'L' dstid[4] p0[2*4] p1[2*4] end0[4] end1[4] radius[4] srcid[4] sp[2*4] */
- case 'L':
- m = 1+4+2*4+2*4+4+4+4+4+2*4;
- if(n < m)
- goto Eshortdraw;
- dst = drawimage(client, a+1);
- dstid = BGLONG(a+1);
- drawpoint(&p, a+5);
- drawpoint(&q, a+13);
- e0 = BGLONG(a+21);
- e1 = BGLONG(a+25);
- j = BGLONG(a+29);
- if(j < 0){
- err = "negative line width";
- goto error;
- }
- src = drawimage(client, a+33);
- if(!dst || !src)
- goto Enodrawimage;
- drawpoint(&sp, a+37);
- op = drawclientop(client);
- memline(dst, p, q, e0, e1, j, src, sp, op);
- /* avoid memlinebbox if possible */
- if(dstid==0 || dst->layer!=nil){
- /* BUG: this is terribly inefficient: update maximal containing rect*/
- r = memlinebbox(p, q, e0, e1, j);
- dstflush(dstid, dst, insetrect(r, -(1+1+j)));
- }
- continue;
-
- /* create image mask: 'm' newid[4] id[4] */
-/*
- *
- case 'm':
- m = 4+4;
- if(n < m)
- goto Eshortdraw;
- break;
- *
- */
-
- /* attach to a named image: 'n' dstid[4] j[1] name[j] */
- case 'n':
- m = 1+4+1;
- if(n < m)
- goto Eshortdraw;
- j = a[5];
- if(j == 0) /* give me a non-empty name please */
- goto Eshortdraw;
- m += j;
- if(n < m)
- goto Eshortdraw;
- dstid = BGLONG(a+1);
- if(drawlookup(client, dstid, 0))
- goto Eimageexists;
- dn = drawlookupname(j, (char*)a+6);
- if(dn == nil)
- goto Enoname;
- s = malloc(j+1);
- if(s == nil)
- goto Enomem;
- if(drawinstall(client, dstid, dn->dimage->image, 0) == 0)
- goto Edrawmem;
- di = drawlookup(client, dstid, 0);
- if(di == 0)
- goto Eoldname;
- di->vers = dn->vers;
- di->name = s;
- di->fromname = dn->dimage;
- di->fromname->ref++;
- memmove(di->name, a+6, j);
- di->name[j] = 0;
- client->infoid = dstid;
- continue;
-
- /* name an image: 'N' dstid[4] in[1] j[1] name[j] */
- case 'N':
- m = 1+4+1+1;
- if(n < m)
- goto Eshortdraw;
- c = a[5];
- j = a[6];
- if(j == 0) /* give me a non-empty name please */
- goto Eshortdraw;
- m += j;
- if(n < m)
- goto Eshortdraw;
- di = drawlookup(client, BGLONG(a+1), 0);
- if(di == 0)
- goto Enodrawimage;
- if(di->name)
- goto Enamed;
- if(c)
- if(drawaddname(client, di, j, (char*)a+7, &err) < 0)
- goto error;
- else{
- dn = drawlookupname(j, (char*)a+7);
- if(dn == nil)
- goto Enoname;
- if(dn->dimage != di)
- goto Ewrongname;
- drawdelname(dn);
- }
- continue;
-
- /* position window: 'o' id[4] r.min [2*4] screenr.min [2*4] */
- case 'o':
- m = 1+4+2*4+2*4;
- if(n < m)
- goto Eshortdraw;
- dst = drawimage(client, a+1);
- if(!dst)
- goto Enodrawimage;
- if(dst->layer){
- drawpoint(&p, a+5);
- drawpoint(&q, a+13);
- r = dst->layer->screenr;
- ni = memlorigin(dst, p, q);
- if(ni < 0){
- err = "image origin failed";
- goto error;
- }
- if(ni > 0){
- addflush(r);
- addflush(dst->layer->screenr);
- ll = drawlookup(client, BGLONG(a+1), 1);
- drawrefreshscreen(ll, client);
- }
- }
- continue;
-
- /* set compositing operator for next draw operation: 'O' op */
- case 'O':
- m = 1+1;
- if(n < m)
- goto Eshortdraw;
- client->op = a[1];
- continue;
-
- /* filled polygon: 'P' dstid[4] n[2] wind[4] ignore[2*4] srcid[4] sp[2*4] p0[2*4] dp[2*2*n] */
- /* polygon: 'p' dstid[4] n[2] end0[4] end1[4] radius[4] srcid[4] sp[2*4] p0[2*4] dp[2*2*n] */
- case 'p':
- case 'P':
- m = 1+4+2+4+4+4+4+2*4;
- if(n < m)
- goto Eshortdraw;
- dstid = BGLONG(a+1);
- dst = drawimage(client, a+1);
- ni = BGSHORT(a+5);
- if(ni < 0){
- err = "negative cout in polygon";
- goto error;
- }
- e0 = BGLONG(a+7);
- e1 = BGLONG(a+11);
- j = 0;
- if(*a == 'p'){
- j = BGLONG(a+15);
- if(j < 0){
- err = "negative polygon line width";
- goto error;
- }
- }
- src = drawimage(client, a+19);
- if(!dst || !src)
- goto Enodrawimage;
- drawpoint(&sp, a+23);
- drawpoint(&p, a+31);
- ni++;
- pp = mallocz(ni*sizeof(Point), 1);
- if(pp == nil)
- goto Enomem;
- doflush = 0;
- if(dstid==0 || (dst->layer && dst->layer->screen->image->data == screenimage->data))
- doflush = 1; /* simplify test in loop */
- ox = oy = 0;
- esize = 0;
- u = a+m;
- for(y=0; y<ni; y++){
- q = p;
- oesize = esize;
- u = drawcoord(u, a+n, ox, &p.x);
- if(!u)
- goto Eshortdraw;
- u = drawcoord(u, a+n, oy, &p.y);
- if(!u)
- goto Eshortdraw;
- ox = p.x;
- oy = p.y;
- if(doflush){
- esize = j;
- if(*a == 'p'){
- if(y == 0){
- c = memlineendsize(e0);
- if(c > esize)
- esize = c;
- }
- if(y == ni-1){
- c = memlineendsize(e1);
- if(c > esize)
- esize = c;
- }
- }
- if(*a=='P' && e0!=1 && e0 !=~0)
- r = dst->clipr;
- else if(y > 0){
- r = Rect(q.x-oesize, q.y-oesize, q.x+oesize+1, q.y+oesize+1);
- combinerect(&r, Rect(p.x-esize, p.y-esize, p.x+esize+1, p.y+esize+1));
- }
- if(rectclip(&r, dst->clipr)) /* should perhaps be an arg to dstflush */
- dstflush(dstid, dst, r);
- }
- pp[y] = p;
- }
- if(y == 1)
- dstflush(dstid, dst, Rect(p.x-esize, p.y-esize, p.x+esize+1, p.y+esize+1));
- op = drawclientop(client);
- if(*a == 'p')
- mempoly(dst, pp, ni, e0, e1, j, src, sp, op);
- else
- memfillpoly(dst, pp, ni, e0, src, sp, op);
- free(pp);
- m = u-a;
- continue;
-
- /* read: 'r' id[4] R[4*4] */
- case 'r':
- m = 1+4+4*4;
- if(n < m)
- goto Eshortdraw;
- i = drawimage(client, a+1);
- if(!i)
- goto Enodrawimage;
- drawrectangle(&r, a+5);
- if(!rectinrect(r, i->r))
- goto Ereadoutside;
- c = bytesperline(r, i->depth);
- c *= Dy(r);
- free(client->readdata);
- client->readdata = mallocz(c, 0);
- if(client->readdata == nil){
- err = "readimage malloc failed";
- goto error;
- }
- client->nreaddata = memunload(i, r, client->readdata, c);
- if(client->nreaddata < 0){
- free(client->readdata);
- client->readdata = nil;
- err = "bad readimage call";
- goto error;
- }
- continue;
-
- /* string: 's' dstid[4] srcid[4] fontid[4] P[2*4] clipr[4*4] sp[2*4] ni[2] ni*(index[2]) */
- /* stringbg: 'x' dstid[4] srcid[4] fontid[4] P[2*4] clipr[4*4] sp[2*4] ni[2] bgid[4] bgpt[2*4] ni*(index[2]) */
- case 's':
- case 'x':
- m = 1+4+4+4+2*4+4*4+2*4+2;
- if(*a == 'x')
- m += 4+2*4;
- if(n < m)
- goto Eshortdraw;
-
- dst = drawimage(client, a+1);
- dstid = BGLONG(a+1);
- src = drawimage(client, a+5);
- if(!dst || !src)
- goto Enodrawimage;
- font = drawlookup(client, BGLONG(a+9), 1);
- if(font == 0)
- goto Enodrawimage;
- if(font->nfchar == 0)
- goto Enotfont;
- drawpoint(&p, a+13);
- drawrectangle(&r, a+21);
- drawpoint(&sp, a+37);
- ni = BGSHORT(a+45);
- u = a+m;
- m += ni*2;
- if(n < m)
- goto Eshortdraw;
- clipr = dst->clipr;
- dst->clipr = r;
- op = drawclientop(client);
- if(*a == 'x'){
- /* paint background */
- l = drawimage(client, a+47);
- if(!l)
- goto Enodrawimage;
- drawpoint(&q, a+51);
- r.min.x = p.x;
- r.min.y = p.y-font->ascent;
- r.max.x = p.x;
- r.max.y = r.min.y+Dy(font->image->r);
- j = ni;
- while(--j >= 0){
- ci = BGSHORT(u);
- if(ci<0 || ci>=font->nfchar){
- dst->clipr = clipr;
- goto Eindex;
- }
- r.max.x += font->fchar[ci].width;
- u += 2;
- }
- memdraw(dst, r, l, q, memopaque, ZP, op);
- u -= 2*ni;
- }
- q = p;
- while(--ni >= 0){
- ci = BGSHORT(u);
- if(ci<0 || ci>=font->nfchar){
- dst->clipr = clipr;
- goto Eindex;
- }
- q = drawchar(dst, q, src, &sp, font, ci, op);
- u += 2;
- }
- dst->clipr = clipr;
- p.y -= font->ascent;
- dstflush(dstid, dst, Rect(p.x, p.y, q.x, p.y+Dy(font->image->r)));
- continue;
-
- /* use public screen: 'S' id[4] chan[4] */
- case 'S':
- m = 1+4+4;
- if(n < m)
- goto Eshortdraw;
- dstid = BGLONG(a+1);
- if(dstid == 0)
- goto Ebadarg;
- dscrn = drawlookupdscreen(dstid);
- if(dscrn==0 || (dscrn->public==0 && dscrn->owner!=client))
- goto Enodrawscreen;
- if(dscrn->screen->image->chan != BGLONG(a+5)){
- err = "inconsistent chan";
- goto error;
- }
- if(drawinstallscreen(client, dscrn, 0, 0, 0, 0) == 0)
- goto Edrawmem;
- continue;
-
- /* top or bottom windows: 't' top[1] nw[2] n*id[4] */
- case 't':
- m = 1+1+2;
- if(n < m)
- goto Eshortdraw;
- nw = BGSHORT(a+2);
- if(nw < 0)
- goto Ebadarg;
- if(nw == 0)
- continue;
- m += nw*4;
- if(n < m)
- goto Eshortdraw;
- lp = mallocz(nw*sizeof(Memimage*), 1);
- if(lp == 0)
- goto Enomem;
- for(j=0; j<nw; j++){
- lp[j] = drawimage(client, a+1+1+2+j*4);
- if(lp[j] == nil){
- free(lp);
- goto Enodrawimage;
- }
- }
- if(lp[0]->layer == 0){
- err = "images are not windows";
- free(lp);
- goto error;
- }
- for(j=1; j<nw; j++)
- if(lp[j]->layer->screen != lp[0]->layer->screen){
- err = "images not on same screen";
- free(lp);
- goto error;
- }
- if(a[1])
- memltofrontn(lp, nw);
- else
- memltorearn(lp, nw);
- if(lp[0]->layer->screen->image->data == screenimage->data)
- for(j=0; j<nw; j++)
- addflush(lp[j]->layer->screenr);
- free(lp);
- ll = drawlookup(client, BGLONG(a+1+1+2), 1);
- drawrefreshscreen(ll, client);
- continue;
-
- /* visible: 'v' */
- case 'v':
- m = 1;
- drawflush();
- continue;
-
- /* write: 'y' id[4] R[4*4] data[x*1] */
- /* write from compressed data: 'Y' id[4] R[4*4] data[x*1] */
- case 'y':
- case 'Y':
- m = 1+4+4*4;
- if(n < m)
- goto Eshortdraw;
- dstid = BGLONG(a+1);
- dst = drawimage(client, a+1);
- if(!dst)
- goto Enodrawimage;
- drawrectangle(&r, a+5);
- if(!rectinrect(r, dst->r))
- goto Ewriteoutside;
- y = memload(dst, r, a+m, n-m, *a=='Y');
- if(y < 0){
- err = "bad writeimage call";
- goto error;
- }
- dstflush(dstid, dst, r);
- m += y;
- continue;
- }
- }
- qunlock(&sdraw.lk);
- return oldn - n;
-
-Enodrawimage:
- err = "unknown id for draw image";
- goto error;
-Enodrawscreen:
- err = "unknown id for draw screen";
- goto error;
-Eshortdraw:
- err = "short draw message";
- goto error;
-/*
-Eshortread:
- err = "draw read too short";
- goto error;
-*/
-Eimageexists:
- err = "image id in use";
- goto error;
-Escreenexists:
- err = "screen id in use";
- goto error;
-Edrawmem:
- err = "image memory allocation failed";
- goto error;
-Ereadoutside:
- err = "readimage outside image";
- goto error;
-Ewriteoutside:
- err = "writeimage outside image";
- goto error;
-Enotfont:
- err = "image not a font";
- goto error;
-Eindex:
- err = "character index out of range";
- goto error;
-/*
-Enoclient:
- err = "no such draw client";
- goto error;
-Edepth:
- err = "image has bad depth";
- goto error;
-Enameused:
- err = "image name in use";
- goto error;
-*/
-Enoname:
- err = "no image with that name";
- goto error;
-Eoldname:
- err = "named image no longer valid";
- goto error;
-Enamed:
- err = "image already has name";
- goto error;
-Ewrongname:
- err = "wrong name for image";
- goto error;
-Enomem:
- err = "out of memory";
- goto error;
-Ebadarg:
- err = "bad argument in draw message";
- goto error;
-
-error:
- werrstr("%s", err);
- qunlock(&sdraw.lk);
- return -1;
-}
-
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-02 19:59:38 +0000