ref: a411870ee4640241e3c494367d922847da84f972
dir: /libinterp/tk.c/
#include "lib9.h"
#include "interp.h"
#include "isa.h"
#include "runt.h"
#include "draw.h"
#include "tk.h"
#include "tkmod.h"
#include "pool.h"
#include "drawif.h"
#include "keyboard.h"
#include "raise.h"
#include "kernel.h"
extern void tkfreetop(Heap*, int);
Type* fakeTkTop;
static uchar TktypeMap[] = Tk_Toplevel_map;
int tkstylus;
void (*tkwiretap)(void*, char*, char*, void*, Rectangle*);
static void tktopimagedptr(TkTop*, Draw_Image*);
static char*tkputwinimage(Tk*, Draw_Image*, int);
static void
lockctxt(TkCtxt *ctxt)
{
libqlock(ctxt->lock);
}
static void
unlockctxt(TkCtxt *ctxt)
{
libqunlock(ctxt->lock);
}
static void
tkmarktop(Type *t, void *vw)
{
Heap *h;
TkVar *v;
TkPanelimage *di;
TkTop *top;
Tk *w, *next;
TkWin *tkw;
markheap(t, vw);
top = vw;
// XXX do we need to lock context here??
for(v = top->vars; v; v = v->link) {
if(v->type == TkVchan) {
h = D2H(v->value);
Setmark(h);
}
}
for (di = top->panelimages; di != nil; di = di->link) {
h = D2H(di->image);
Setmark(h);
}
for(w = top->windows; w != nil; w = next){
tkw = TKobj(TkWin, w);
if(tkw->image != nil){
h = D2H(tkw->di);
Setmark(h);
}
next = tkw->next;
}
}
void
tkmodinit(void)
{
builtinmod("$Tk", Tkmodtab, Tkmodlen);
fmtinstall('v', tkeventfmt); /* XXX */
fakeTkTop = dtype(tkfreetop, sizeof(TkTop), TktypeMap, sizeof(TktypeMap));
fakeTkTop->mark = tkmarktop;
tksorttable();
}
void
Tk_toplevel(void *a)
{
Tk *tk;
Heap *h;
TkTop *t;
TkWin *tkw;
TkCtxt *ctxt;
Display *disp;
F_Tk_toplevel *f = a;
void *r;
r = *f->ret;
*f->ret = H;
destroy(r);
disp = checkdisplay(f->d);
h = heapz(fakeTkTop);
t = H2D(TkTop*, h);
poolimmutable(h);
t->dd = f->d;
D2H(t->dd)->ref++;
t->execdepth = -1;
t->display = disp;
tk = tknewobj(t, TKframe, sizeof(Tk)+sizeof(TkWin));
if(tk == nil) {
destroy(t);
return;
}
tk->act.x = 0;
tk->act.y = 0;
tk->act.width = 1; /* XXX why not zero? */
tk->act.height = 1;
tk->flag |= Tkwindow;
tkw = TKobj(TkWin, tk);
tkw->di = H;
tktopopt(tk, string2c(f->arg));
tk->geom = tkmoveresize;
tk->name = tkmkname(".");
if(tk->name == nil) {
tkfreeobj(tk);
destroy(t);
return;
}
ctxt = tknewctxt(disp);
if(ctxt == nil) {
tkfreeobj(tk);
destroy(t);
return;
}
t->ctxt = ctxt;
t->screenr = disp->image->r;
tkw->next = t->windows;
t->windows = tk;
t->root = tk;
Setmark(h);
poolmutable(h);
t->wreq = cnewc(&Tptr, movp, 8);
*f->ret = (Tk_Toplevel*)t;
}
void
Tk_cmd(void *a)
{
TkTop *t;
char *val, *e;
F_Tk_cmd *f = a;
t = (TkTop*)f->t;
if(t == H || D2H(t)->t != fakeTkTop) {
retstr(TkNotop, f->ret);
return;
}
lockctxt(t->ctxt);
val = nil;
e = tkexec(t, string2c(f->arg), &val);
unlockctxt(t->ctxt);
if(e == TkNomem){
free(val);
error(exNomem); /* what about f->ret? */
}
if(e != nil && t->errx[0] != '\0'){
char *s = tkerrstr(t, e);
retstr(s, f->ret);
free(s);
}
else
retstr(e == nil ? val : e, f->ret);
if(tkwiretap != nil)
tkwiretap(t, string2c(f->arg), val, nil, nil);
free(val);
}
void
Tk_color(void *fp)
{
ulong rgba;
F_Tk_color *f = fp;
if(tkparsecolor(string2c(f->col), &rgba) != nil)
*f->ret = DNotacolor;
else
*f->ret = rgba;
}
void
Tk_rect(void *fp)
{
F_Tk_rect *f = fp;
Tk *tk;
TkTop *t;
Rectangle r;
Point o;
int bd, flags, w, h;
t = (TkTop*)f->t;
if(t == H || D2H(t)->t != fakeTkTop){
*(Rectangle*)f->ret = ZR;
return;
}
lockctxt(t->ctxt);
tk = tklook(t, string2c(f->name), 0);
if(tk == nil){
*(Rectangle*)f->ret = ZR;
unlockctxt(t->ctxt);
return;
}
o = tkposn(tk);
flags = f->flags;
if(flags & Tk_Local)
o = subpt(o, tkposn(tk->env->top->root));
if(flags & Tk_Required){
h = tk->req.height;
w = tk->req.width;
}else{
h = tk->act.height;
w = tk->act.width;
}
unlockctxt(t->ctxt);
if(w < 0)
w = 0;
if(h < 0)
h = 0;
bd = tk->borderwidth;
if(bd < 0)
bd = 0;
if(flags & Tk_Border){
r.min = o;
r.max.x = r.min.x + w + bd + bd;
r.max.y = r.min.y + h + bd + bd;
}else{
r.min.x = o.x + bd;
r.min.y = o.y + bd;
r.max.x = r.min.x + w;
r.max.y = r.min.y + h;
}
*(Rectangle*)f->ret = r;
}
int
tkdescendant(Tk *p, Tk *c)
{
int n;
if(c == nil || p->env->top != c->env->top)
return 0;
if (p->name != nil && c->name != nil) {
n = strlen(p->name->name);
if(strncmp(p->name->name, c->name->name, n) == 0)
return 1;
}
return 0;
}
void
tkenterleave(TkTop *t)
{
Tk *fw, *ent;
TkMouse m;
TkTop *t1, *t2;
TkCtxt *c;
c = t->ctxt;
m = c->mstate;
if (c->mgrab != nil && (c->mgrab->flag & Tknograb)) {
fw = tkfindfocus(t, m.x, m.y, 1);
if (fw != c->mgrab && fw != nil && (fw->flag & Tknograb) == 0)
fw = nil;
} else if (c->focused) {
fw = tkfindfocus(t, m.x, m.y, 1);
if (fw != c->mfocus)
fw = nil;
} else if (c->mgrab != nil) {
fw = tkfindfocus(t, m.x, m.y, 1);
if (fw != nil) {
if (!tkdescendant(c->mgrab, fw) && !(fw->flag & c->mgrab->flag & Tknograb))
fw = nil;
}
} else if (m.b == 0)
fw = tkfindfocus(t, m.x, m.y, 0);
else if (tkfindfocus(t, m.x, m.y, 1) == c->entered)
return;
else
fw = nil;
if (c->entered == fw)
return;
t1 = t2 = nil;
if (c->entered != nil) {
ent = c->entered;
t1 = ent->env->top;
c->entered = nil;
tkdeliver(ent, TkLeave, nil);
}
if (fw != nil) {
t2 = fw->env->top;
c->entered = fw;
tkdeliver(fw, TkEnter, &m);
}
if (t1 != nil)
tkupdate(t1);
if (t2 != nil && t1 != t2)
tkupdate(t2);
}
void
Tk_pointer(void *a)
{
static int buttonr[] = {TkButton1R, TkButton2R, TkButton3R, TkButton4R, TkButton5R, TkButton6R};
static int buttonp[] = {TkButton1P, TkButton2P, TkButton3P, TkButton4P, TkButton5P, TkButton6P};
Tk *fw, *target, *dest, *ent;
TkMouse m;
TkCtxt *c;
TkTop *t, *ot;
int d, dtype, etype;
F_Tk_pointer *f = a;
int b, lastb, inside;
t = (TkTop*)f->t;
if(t == H || D2H(t)->t != fakeTkTop)
return;
c = t->ctxt;
/* ignore no-button-motion for emulated stylus input */
if(tkstylus && c->mstate.b == 0 && (f->p.buttons&0x1f)==0)
return;
lockctxt(c);
//if (f->p.buttons != 0 || c->mstate.b != 0)
//print("tkmouse %d [%d %d], focused %d[%s], grab %s, entered %s\n",
// f->p.buttons, f->p.xy.x, f->p.xy.y, c->focused, tkname(c->mfocus), tkname(c->mgrab), tkname(c->entered));
/*
* target is the widget that we're deliver the mouse event to.
* inside is true if the mouse point is located inside target.
*/
inside = 1;
if (c->mgrab != nil && (c->mgrab->flag & Tknograb)) {
fw = tkfindfocus(t, f->p.xy.x, f->p.xy.y, 1);
if (fw != nil && (fw->flag & Tknograb))
target = fw;
else {
target = c->mgrab;
inside = 0;
}
} else if (c->focused) {
if (c->mfocus != nil) {
fw = tkfindfocus(t, f->p.xy.x, f->p.xy.y, 1);
if (fw != c->mfocus)
inside = 0;
}
target = c->mfocus;
} else if (c->mgrab != nil && (c->mgrab->flag & Tkdisabled) == 0) {
/*
* XXX this isn't quite right, as perhaps we should do a tkinwindow()
* (below the grab).
* so that events to containers underneath the grab arrive
* via the containers (as is usual)
*/
fw = tkfindfocus(t, f->p.xy.x, f->p.xy.y, 1);
if (fw != nil && tkdescendant(c->mgrab, fw))
target = fw;
else {
target = c->mgrab;
inside = 0;
}
} else
target = tkfindfocus(t, f->p.xy.x, f->p.xy.y, 0);
lastb = c->mstate.b;
c->mstate.x = f->p.xy.x;
c->mstate.y = f->p.xy.y;
c->mstate.b = f->p.buttons & 0x1f; /* Just the buttons */
m = c->mstate;
/* XXX if the mouse is being moved with the buttons held down
* and we've no mfocus and no mgrab then ignore
* the event as our original target has gone away (or never existed)
*/
if (lastb && m.b && !c->focused && c->mgrab == nil)
target = nil;
if (target != c->entered || (c->entered != nil && !inside)) {
if (c->entered != nil) {
fw = c->entered;
c->entered = nil;
tkdeliver(fw, TkLeave, nil);
if (target == nil || fw->env->top != target->env->top)
tkupdate(fw->env->top);
}
if (inside) {
c->entered = target;
tkdeliver(target, TkEnter, &m);
}
}
dest = nil;
if (target != nil) {
etype = 0;
dtype = 0;
if(f->p.buttons & (1<<8)) /* Double */
dtype = TkDouble;
d = lastb ^ m.b;
if (d) {
/* cancel any autorepeat, notifying existing client */
tkrepeat(nil, nil, nil, 0, 0);
if (d & ~lastb & 1) /* button 1 potentially takes the focus */
tkdeliver(target, TkTakefocus|TkButton1P, &m);
}
for(b=0; b<nelem(buttonp); b++){
if(d & (1<<b)){
etype = buttonr[b];
if(m.b & (1<<b))
etype = buttonp[b]|dtype;
dest = tkdeliver(target, etype, &m);
}
}
if(tkstylus && m.b==0) {
if ((ent = c->entered) != nil) {
c->entered = nil;
ot = ent->env->top;
tkdeliver(ent, TkLeave, nil);
if (ot != target->env->top)
tkupdate(ot);
}
} else if(etype == 0) {
etype = TkMotion;
for(b = 0; b<nelem(buttonp); b++)
if (m.b & (1<<b))
etype |= buttonp[b];
tkdeliver(target, etype, &m);
}
if (m.b != 0) {
if (lastb == 0 && !c->focused) { /* (some deliver might have grabbed it...) */
if (dest == nil)
dest = target;
if ((dest->flag & Tknograb) == 0) {
c->focused = 1;
c->mfocus = dest;
}
}
} else {
c->focused = 0;
c->mfocus = nil;
if (lastb != 0)
tkenterleave(t);
}
tkupdate(target->env->top);
} else if (c->focused && m.b == 0) {
c->focused = 0;
tkenterleave(t);
}
unlockctxt(c);
}
void
Tk_keyboard(void *a)
{
Tk *grab;
TkTop *t;
TkCtxt *c;
F_Tk_keyboard *f = a;
t = (TkTop*)f->t;
if(t == H || D2H(t)->t != fakeTkTop)
return;
c = t->ctxt;
if (c == nil)
return;
lockctxt(c);
if (c->tkmenu != nil)
grab = c->tkmenu;
else
grab = c->tkkeygrab;
if(grab == nil){
unlockctxt(c);
return;
}
t = grab->env->top;
tkdeliver(grab, TkKey|TKKEY(f->key), nil);
tkupdate(t);
unlockctxt(c);
}
TkVar*
tkmkvar(TkTop *t, char *name, int type)
{
TkVar *v;
for(v = t->vars; v; v = v->link)
if(strcmp(v->name, name) == 0)
return v;
if(type == 0)
return nil;
v = malloc(sizeof(TkVar)+strlen(name)+1);
if(v == nil)
return nil;
strcpy(v->name, name);
v->link = t->vars;
t->vars = v;
v->type = type;
v->value = nil;
if(type == TkVchan)
v->value = H;
return v;
}
void
tkfreevar(TkTop *t, char *name, int swept)
{
TkVar **l, *p;
if(name == nil)
return;
l = &t->vars;
for(p = *l; p != nil; p = p->link) {
if(strcmp(p->name, name) == 0) {
*l = p->link;
switch(p->type) {
default:
free(p->value);
break;
case TkVchan:
if(!swept)
destroy(p->value);
break;
}
free(p);
return;
}
l = &p->link;
}
}
void
Tk_namechan(void *a)
{
Heap *h;
TkVar *v;
TkTop *t;
char *name;
F_Tk_namechan *f = a;
t = (TkTop*)f->t;
if(t == H || D2H(t)->t != fakeTkTop) {
retstr(TkNotop, f->ret);
return;
}
if(f->c == H) {
retstr("nil channel", f->ret);
return;
}
name = string2c(f->n);
if(name[0] == '\0') {
retstr(TkBadvl, f->ret);
return;
}
lockctxt(t->ctxt);
v = tkmkvar(t, name, TkVchan);
if(v == nil) {
unlockctxt(t->ctxt);
retstr(TkNomem, f->ret);
return;
}
if(v->type != TkVchan) {
unlockctxt(t->ctxt);
retstr(TkNotvt, f->ret);
return;
}
destroy(v->value);
v->value = f->c;
unlockctxt(t->ctxt);
h = D2H(v->value);
h->ref++;
Setmark(h);
retstr("", f->ret);
}
void
Tk_quote(void *a)
{
String *s, *ns;
F_Tk_quote *f;
void *r;
int c, i, need, len, userune, last, n;
Rune *sr;
char *sc;
f = a;
r = *f->ret;
*f->ret = H;
destroy(r);
s = f->s;
if(s == H){
retstr("{}", f->ret);
return;
}
len = s->len;
userune = 0;
if(len < 0) {
len = -len;
userune = 1;
}
need = len+2;
for(i = 0; i < len; i++) {
c = userune? s->Srune[i]: s->Sascii[i];
if(c == '{' || c == '}' || c == '\\')
need++;
}
if(userune) {
ns = newrunes(need);
sr = ns->Srune;
*sr++ = '{';
last = 0;
for(i = 0;; i++) {
if(i >= len || (c = s->Srune[i]) == '{' || c == '}' || c == '\\'){
n = i-last;
if(n) {
memmove(sr, &s->Srune[last], n*sizeof(Rune));
sr += n;
}
if(i >= len)
break;
*sr++ = '\\';
last = i;
}
}
*sr = '}';
} else {
ns = newstring(need);
sc = ns->Sascii;
*sc++ = '{';
last = 0;
for(i = 0;; i++) {
if(i >= len || (c = s->Sascii[i]) == '{' || c == '}' || c == '\\'){
n = i-last;
if(n) {
memmove(sc, &s->Sascii[last], n);
sc += n;
}
if(i >= len)
break;
*sc++ = '\\';
last = i;
}
}
*sc= '}';
}
*f->ret = ns;
}
static void
tkreplimg(TkTop *t, Draw_Image *f, Draw_Image *m, Image **ximg)
{
Display *d;
Image *cimg, *cmask, *new;
cimg = lookupimage(f);
d = t->display;
if(cimg == nil || cimg->screen != nil || cimg->display != d)
return;
cmask = lookupimage(m);
if(cmask != nil && (cmask->screen != nil || cmask->display != d))
return;
if (cmask == nil)
new = allocimage(d, Rect(0, 0, Dx(cimg->r), Dy(cimg->r)), cimg->chan, 0, DNofill);
else {
if(cmask->screen != nil || cmask->display != d)
return;
new = allocimage(d, Rect(0, 0, Dx(cimg->r), Dy(cimg->r)), RGBA32, 0, DTransparent);
}
if(new == nil)
return;
draw(new, new->r, cimg, cmask, cimg->r.min);
if(tkwiretap != nil)
tkwiretap(t, "replimg", nil, cimg, &cimg->r);
if(*ximg != nil)
freeimage(*ximg);
*ximg = new;
}
static char*
tkaddpanelimage(TkTop *t, Draw_Image *di, Image **i)
{
TkPanelimage *pi;
if (di == H) {
*i = 0;
return nil;
}
*i = lookupimage(di);
if (*i == nil || (*i)->display != t->display)
return TkNotwm;
for (pi = t->panelimages; pi != nil; pi = pi->link) {
if (pi->image == di) {
pi->ref++;
return nil;
}
}
pi = malloc(sizeof(TkPanelimage));
if (pi == nil)
return TkNomem;
pi->image = di;
D2H(di)->ref++;
pi->ref = 1;
pi->link = t->panelimages;
t->panelimages = pi;
return nil;
}
void
tkdelpanelimage(TkTop *t, Image *i)
{
TkPanelimage *pi, *prev;
int locked;
if (i == nil)
return;
prev = nil;
for (pi = t->panelimages; pi != nil; pi = pi->link) {
if (lookupimage(pi->image) == i)
break;
prev = pi;
}
if (pi == nil || --pi->ref > 0)
return;
if (prev)
prev->link = pi->link;
else
t->panelimages = pi->link;
if (D2H(pi->image)->ref == 1) { /* don't bother locking if it's not going away */
locked = lockdisplay(t->display);
destroy(pi->image);
if (locked)
unlockdisplay(t->display);
}
free(pi);
}
void
Tk_putimage(void *a)
{
TkTop *t;
TkImg *tki;
Image *i, *m, *oldi, *oldm;
int locked, found, reqid, n;
char *words[2];
Display *d;
F_Tk_putimage *f;
void *r;
char *name, *e;
Tk *tk;
f = a;
r = *f->ret;
*f->ret = H;
destroy(r);
t = (TkTop*)f->t;
if(t == H || D2H(t)->t != fakeTkTop) {
retstr(TkNotop, f->ret);
return;
}
if(f->i == H) {
retstr(TkBadvl, f->ret);
return;
}
name = string2c(f->name);
lockctxt(t->ctxt);
e = nil;
found = 0;
if(name[0] == '.'){
n = getfields(name, words, nelem(words), 1, " ");
reqid = -1;
if(n > 1){
reqid = atoi(words[1]);
name = words[0];
}
if((tk = tklook(t, name, 0)) != nil){
if(tk->type == TKchoicebutton){
tk = tkfindchoicemenu(tk);
if(tk == nil)
goto Error;
}
if(tk->type == TKframe || tk->type == TKmenu){
if((tk->flag & Tkwindow) == 0){
e = TkNotwm;
goto Error;
}
e = tkputwinimage(tk, f->i, reqid);
found = 1;
} else
if(tk->type == TKpanel){
if(n > 1){
e = TkBadvl;
goto Error;
}
e = tkaddpanelimage(t, f->i, &i);
if(e != nil)
goto Error;
e = tkaddpanelimage(t, f->m, &m);
if(e != nil){
tkdelpanelimage(t, i);
goto Error;
}
tkgetpanelimage(tk, &oldi, &oldm);
tkdelpanelimage(t, oldi);
tkdelpanelimage(t, oldm);
tksetpanelimage(tk, i, m);
tkdirty(tk);
found = 1;
}
}
}
if(!found){
/* XXX perhaps we shouldn't ever do this if name begins with '.'? */
tki = tkname2img(t, name);
if(tki == nil) {
e = TkBadvl;
goto Error;
}
d = t->display;
locked = lockdisplay(d);
tkreplimg(t, f->i, f->m, &tki->img);
if(locked)
unlockdisplay(d);
tksizeimage(t->root, tki);
}
Error:
unlockctxt(t->ctxt);
if(e != nil)
retstr(e, f->ret);
return;
}
Draw_Image*
tkimgcopy(TkTop *t, Image *cimg)
{
Image *new;
Display *dp;
Draw_Image *i;
if(cimg == nil)
return H;
dp = t->display;
new = allocimage(dp, cimg->r, cimg->chan, cimg->repl, DNofill);
if(new == nil)
return H;
new->clipr = cimg->clipr;
drawop(new, new->r, cimg, nil, cimg->r.min, S);
if(tkwiretap != nil)
tkwiretap(t, "imgcopy", nil, cimg, &cimg->r);
i = mkdrawimage(new, H, t->dd, nil);
if(i == H)
freeimage(new);
return i;
}
void
Tk_getimage(void *a)
{
Tk *tk;
char *n;
TkImg *i;
TkTop *t;
int locked;
Display *d;
F_Tk_getimage *f;
void *r;
void (*getimgs)(Tk*, Image**, Image**);
Image *image, *mask;
f = a;
r = f->ret->t0;
f->ret->t0 = H;
destroy(r);
r = f->ret->t1;
f->ret->t1 = H;
destroy(r);
r = f->ret->t2;
f->ret->t2 = H;
destroy(r);
t = (TkTop*)f->t;
if(t == H || D2H(t)->t != fakeTkTop) {
retstr(TkNotop, &f->ret->t2);
return;
}
d = t->ctxt->display;
n = string2c(f->name);
lockctxt(t->ctxt);
i = tkname2img(t, n);
if (i != nil) {
image = i->img;
mask = nil;
} else {
tk = tklook(t, n, 0);
if (tk == nil || (getimgs = tkmethod[tk->type]->getimgs) == nil) {
unlockctxt(t->ctxt);
retstr(TkBadvl, &f->ret->t2);
return;
}
getimgs(tk, &image, &mask);
}
locked = lockdisplay(d);
f->ret->t0 = tkimgcopy(t, image);
if (mask != nil)
f->ret->t1 = tkimgcopy(t, mask);
if (locked)
unlockdisplay(d);
unlockctxt(t->ctxt);
}
void
tkfreetop(Heap *h, int swept)
{
TkTop *t;
Tk *f;
TkImg *i, *nexti;
TkVar *v, *nextv;
int wgtype;
void *r;
TkPanelimage *pi, *nextpi;
t = H2D(TkTop*, h);
lockctxt(t->ctxt);
if(swept) {
t->di = H;
t->dd = H;
t->wreq = H;
t->wmctxt = H;
}
t->windows = nil;
for(f = t->root; f; f = f->siblings) {
f->flag |= Tkdestroy;
tkdeliver(f, TkDestroy, nil);
if(f->destroyed != nil)
f->destroyed(f);
}
for(f = t->root; f; f = t->root) {
t->root = f->siblings;
if(swept)
f->flag |= Tkswept;
tkfreeobj(f);
}
for(v = t->vars; v; v = nextv) {
nextv = v->link;
switch(v->type) {
default:
free(v->value);
break;
case TkVchan:
if(!swept)
destroy(v->value);
break;
}
free(v);
}
for (pi = t->panelimages; pi; pi = nextpi) {
if (!swept)
destroy(pi->image);
nextpi = pi->link;
free(pi);
}
for(i = t->imgs; i; i = nexti) {
if(i->ref != 1)
abort();
nexti = i->link;
tkimgput(i);
}
/* XXX free images inside widgets */
for(wgtype = 0; wgtype < TKwidgets; wgtype++)
if(t->binds[wgtype])
tkfreebind(t->binds[wgtype]);
unlockctxt(t->ctxt);
/* XXX should we leave it locked for this bit? */
tkfreectxt(t->ctxt);
if(!swept) {
r = t->di;
t->di = H;
destroy(r);
r = t->dd;
t->dd = H;
destroy(r);
r = t->wreq;
t->wreq = H;
destroy(r);
r = t->wmctxt;
t->wmctxt = H;
destroy(r);
}
}
static void
tktopimagedptr(TkTop *top, Draw_Image *di)
{
if(top->di != H){
destroy(top->di);
top->di = H;
}
if(di == H)
return;
D2H(di)->ref++;
top->di = di;
}
static void
tkfreewinimage(TkWin *w)
{
destroy(w->di);
w->image = nil;
w->di = H;
}
static int
tksetwindrawimage(Tk *tk, Draw_Image *di)
{
TkWin *tkw;
char *name;
Image *i;
int locked;
int same;
tkw = TKobj(TkWin, tk);
same = tkw->di == di;
if(!same)
if(tkw->image != nil)
destroy(tkw->di);
if(di == H){
tkw->di = H;
tkw->image = nil;
return same;
}
tkw->di = di;
i = lookupimage(di);
tkw->image = i;
locked = lockdisplay(i->display);
if(originwindow(i, ZP, i->r.min) == -1)
print("tk originwindow failed: %r\n");
di->r = DRECT(i->r);
di->clipr = DRECT(i->clipr);
if(locked)
unlockdisplay(i->display);
if(!same){
D2H(di)->ref++;
if(tk->name){
name = tk->name->name;
if(name[0] == '.' && name[1] == '\0')
tktopimagedptr(tk->env->top, tkw->di);
}
}
return same;
}
void
tkdestroywinimage(Tk *tk)
{
TkWin *tkw;
TkTop *top;
char *name;
assert(tk->flag & Tkwindow);
tkw = TKobj(TkWin, tk);
top = tk->env->top;
if(tkw->image != nil && !(tk->flag & Tkswept))
destroy(tkw->di);
tkw->di = H;
tkw->image = nil;
if(tk->name == nil)
name = tkw->cbname;
else
name = tk->name->name;
if(name[0] == '.' && name[1] == '\0' && !(tk->flag & Tkswept))
tktopimagedptr(top, H);
tkw->reqid++;
tkwreq(top, "delete %s", name);
}
static char*
tkputwinimage(Tk *tk, Draw_Image *di, int reqid)
{
TkWin *tkw;
TkTop *top;
Image *i;
int bw2, prop, resize;
Rectangle req;
top = tk->env->top;
tkw = TKobj(TkWin, tk);
i = lookupimage(di);
if (i == nil || i->display != top->display)
return TkNotwm;
if(reqid != -1 && reqid < tkw->reqid)
return "!request out of date";
bw2 = 2*tk->borderwidth;
req.min.x = tkw->req.x;
req.min.y = tkw->req.y;
req.max.x = req.min.x + tk->act.width + bw2;
req.max.y = req.min.y + tk->act.height + bw2;
resize = 0;
if(eqrect(req, i->r) == 0){
/*
* if we'd sent a request and our requested rect has now changed,
* then resend the request (via tkupdatewinsize),
* otherwise accept the new size and repack if necessary
*/
if(reqid != -1 && tkw->changed){
if(tkupdatewinsize(tk))
return "!requested size has changed";
} else if(Dx(req) != Dx(i->r) || Dy(req) != Dy(i->r)){
tk->flag |= Tksuspended;
tk->act.width = Dx(i->r) - bw2;
tk->act.height = Dy(i->r) - bw2;
tk->req = tk->act;
prop = tk->flag & Tknoprop;
tk->flag |= Tknoprop;
tkpackqit(tk);
tkrunpack(top);
tk->flag = (tk->flag & ~Tknoprop) | prop;
resize = 1;
}
}
if(reqid == -1)
tkw->reqid++; /* invalidate all buffered requests. */
tkw->act = i->r.min;
tkw->req = tkw->act;
tkw->changed = 0;
tk->req.width = Dx(i->r) - bw2;
tk->req.height = Dy(i->r) - bw2;
tk->act = tk->req;
if((tk->flag & Tkmapped) == 0){
tk->flag |= Tkmapped;
tkdeliver(tk, TkMap, nil);
}
if(tksetwindrawimage(tk, di) == 0 || resize){
tk->dirty = tkrect(tk, 1);
tk->flag |= Tkrefresh;
}
tk->flag &= ~Tksuspended;
lookupimage(di); /* make sure limbo image coords correspond correctly */
tkupdate(top);
return nil;
}
void
tkwreq(TkTop *top, char *fmt, ...)
{
char *buf;
va_list arg;
va_start(arg, fmt);
buf = vsmprint(fmt, arg);
va_end(arg);
tktolimbo(top->wreq, buf);
free(buf);
}
int
tktolimbo(void *var, char *msg)
{
void *ptrs[1];
int r;
if(var==H)
return 0;
ptrs[0] = H;
retstr(msg, (String**) &ptrs[0]);
r = csendalt((Channel *)var, ptrs, &Tptr, TkMaxmsgs);
return r;
}
static void
hexify(char *buf, int n)
{
static char hex[] = "0123456789abcdef";
uchar b;
char *dp, *fp;
fp = buf+n;
dp = buf+n*2;
*dp-- = '\0';
while(fp-- > buf){
b = (uchar)*fp;
*dp-- = hex[b & 0xf];
*dp-- = hex[b >> 4];
}
}
char*
tkcursorswitch(TkTop *top, Image *i, TkImg *img)
{
Image *ci, *scratch;
char *buf;
Rectangle r;
int n, maxb, nb;
if(i == nil && img == nil){
tktolimbo(top->wreq, "cursor");
return nil;
}
if(img != nil){
if(img->cursor){
tktolimbo(top->wreq, img->cursor);
return nil;
}
i = img->img;
}
if(i->depth != 1 || Dx(i->r)*Dy(i->r) > 16000 || Dy(i->r)%8 != 0 || Dy(i->r)%2 != 0)
return TkBadcursor;
/*
* readjust image, inferring hotspot from origin.
*/
if(i->r.min.x != 0 || i->r.min.y != 0){
r.min.x = 0;
r.min.y = 0;
r.max.x = Dx(i->r);
r.max.y = Dy(i->r);
scratch = allocimage(i->display, r, GREY1, 0, DNofill);
if(scratch == nil)
return TkNomem;
draw(scratch, r, i, nil, i->r.min);
ci = scratch;
}else{
scratch = nil;
ci = i;
}
nb = ci->r.max.x/8 * ci->r.max.y;
maxb = 7 + 12*4 + 2*nb + 1;
buf = mallocz(maxb, 0);
if(buf == nil)
return TkNomem;
n = sprint(buf, "cursor %d %d %d %d ", i->r.min.x, i->r.min.y, ci->r.max.x, ci->r.max.y);
unloadimage(ci, ci->r, (uchar*)buf+n, maxb-n);
hexify(buf+n, nb);
tktolimbo(top->wreq, buf);
if(img != nil){
free(img->cursor);
img->cursor = buf;
}
freeimage(scratch);
return nil;
}
void
tkcursorset(TkTop *t, Point p)
{
tkwreq(t, "ptr %d %d", p.x, p.y);
}