ref: a600cca5ff367ca7e7c64a14a8e87ba376780f6d
dir: /libtk/twind.c/
#include "lib9.h"
#include "draw.h"
#include "tk.h"
#include "textw.h"
#define istring u.string
#define iwin u.win
#define imark u.mark
#define iline u.line
#define O(t, e) ((long)(&((t*)0)->e))
static char* tktwincget(Tk*, char*, char**);
static char* tktwinconfigure(Tk*, char*, char**);
static char* tktwincreate(Tk*, char*, char**);
static char* tktwinnames(Tk*, char*, char**);
static int winowned(Tk *tk, Tk *sub);
static
TkStab tkalign[] =
{
"top", Tktop,
"bottom", Tkbottom,
"center", Tkcenter,
"baseline", Tkbaseline,
nil
};
static
TkOption twinopts[] =
{
"align", OPTstab, O(TkTwind, align), tkalign,
"create", OPTtext, O(TkTwind, create), nil,
"padx", OPTnndist, O(TkTwind, padx), nil,
"pady", OPTnndist, O(TkTwind, pady), nil,
"stretch", OPTstab, O(TkTwind, stretch), tkbool,
"window", OPTwinp, O(TkTwind, sub), nil,
"ascent", OPTdist, O(TkTwind, ascent), nil,
nil
};
TkCmdtab
tktwincmd[] =
{
"cget", tktwincget,
"configure", tktwinconfigure,
"create", tktwincreate,
"names", tktwinnames,
nil
};
int
tktfindsubitem(Tk *sub, TkTindex *ix)
{
Tk *tk, *isub;
TkText *tkt;
tk = sub->parent;
if(tk != nil) {
tkt = TKobj(TkText, tk);
tktstartind(tkt, ix);
do {
if(ix->item->kind == TkTwin) {
isub = ix->item->iwin->sub;
if(isub != nil &&
isub->name != nil &&
strcmp(isub->name->name, sub->name->name) == 0)
return 1;
}
} while(tktadjustind(tkt, TkTbyitem, ix));
}
return 0;
}
static void
tktwindsize(Tk *tk, TkTindex *ix)
{
Tk *s;
TkTitem *i;
TkTwind *w;
i = ix->item;
/* assert(i->kind == TkTwin); */
w = i->iwin;
s = w->sub;
if(s == nil)
return;
if(w->width != s->act.width || w->height != s->act.height) {
s->act.width = w->width;
s->act.height = w->height;
if(s->slave) {
tkpackqit(s);
tkrunpack(tk->env->top);
}
}
tktfixgeom(tk, tktprevwrapline(tk, ix->line), ix->line, 0);
tktextsize(tk, 1);
}
void
tktxtforgetsub(Tk *sub, Tk *tk)
{
TkTwind *w;
TkTindex ix;
if(!tktfindsubitem(sub, &ix))
return;
w = ix.item->iwin;
if(w->focus == tk) {
if(0)print("tktxtforget sub %p %q focus %p %q\n", sub, tkname(sub), tk, tkname(tk));
w->focus = nil;
}
}
static void
tktwingeom(Tk *sub, int x, int y, int w, int h)
{
TkTindex ix;
Tk *tk;
TkTwind *win;
USED(x);
USED(y);
tk = sub->parent;
if(!tktfindsubitem(sub, &ix)) {
print("tktwingeom: %s not found\n", sub->name->name);
return;
}
win = ix.item->iwin;
win->width = w;
win->height = h;
sub->req.width = w;
sub->req.height = h;
tktwindsize(tk, &ix);
}
static void
tktdestroyed(Tk *sub)
{
TkTindex ix;
Tk *tk;
if(tktfindsubitem(sub, &ix)) {
ix.item->iwin->sub = nil;
ix.item->iwin->focus = nil;
if((tk = sub->parent) != nil) {
tktfixgeom(tk, tktprevwrapline(tk, ix.line), ix.line, 0);
tktextsize(tk, 1);
sub->parent = nil;
}
}
}
void
tktdirty(Tk *sub)
{
Tk *tk, *parent, *isub;
TkText *tkt;
TkTindex ix;
parent = nil;
for(tk = sub; tk && parent == nil; tk = tk->master)
parent = tk->parent;
if(tk == nil)
return;
tkt = TKobj(TkText, parent);
tktstartind(tkt, &ix);
do {
if(ix.item->kind == TkTwin) {
isub = ix.item->iwin->sub;
if(isub != nil) {
tktfixgeom(parent, tktprevwrapline(parent, ix.line), ix.line, 0);
if (sub->flag & Tktransparent)
parent->flag |= Tkrefresh; /* XXX could be more efficient, by drawing the background locally? */
return;
}
}
} while(tktadjustind(tkt, TkTbyitem, &ix));
tktextsize(parent, 1);
}
static char*
tktwinchk(Tk *tk, TkTwind *w, Tk *oldsub)
{
Tk *sub;
sub = w->sub;
if (sub != oldsub) {
w->sub = oldsub;
if(sub == nil)
return nil;
if(sub->flag & Tkwindow)
return TkIstop;
if(sub->master != nil || sub->parent != nil)
return TkWpack;
if (oldsub != nil) {
oldsub->parent = nil;
oldsub->geom = nil;
oldsub->destroyed = nil;
}
w->sub = sub;
w->focus = nil;
sub->parent = tk;
tksetbits(sub, Tksubsub);
sub->geom = tktwingeom;
sub->destroyed = tktdestroyed;
w->width = sub->req.width;
w->height = sub->req.height;
w->owned = winowned(tk, sub);
}
return nil;
}
/* Text Window Command (+ means implemented)
+cget
+configure
+create
+names
*/
static char*
tktwincget(Tk *tk, char *arg, char **val)
{
char *e;
TkTindex ix;
TkOptab tko[2];
e = tktindparse(tk, &arg, &ix);
if(e != nil)
return e;
if(ix.item->kind != TkTwin)
return TkBadwp;
tko[0].ptr = ix.item->iwin;
tko[0].optab = twinopts;
tko[1].ptr = nil;
return tkgencget(tko, arg, val, tk->env->top);
}
static char*
tktwinconfigure(Tk *tk, char *arg, char **val)
{
char *e;
TkTindex ix;
TkOptab tko[2];
Tk *oldsub;
USED(val);
e = tktindparse(tk, &arg, &ix);
if(e != nil)
return e;
if(ix.item->kind != TkTwin)
return TkBadwp;
oldsub = ix.item->iwin->sub;
tko[0].ptr = ix.item->iwin;
tko[0].optab = twinopts;
tko[1].ptr = nil;
e = tkparse(tk->env->top, arg, tko, nil);
if(e != nil)
return e;
e = tktwinchk(tk, ix.item->iwin, oldsub);
if(e != nil)
return e;
tktwindsize(tk, &ix);
return nil;
}
/*
* return true if tk is an ancestor of sub
*/
static int
winowned(Tk *tk, Tk *sub)
{
int len;
if (tk->name == nil || sub->name == nil)
return 0;
len = strlen(tk->name->name);
if (strncmp(tk->name->name, sub->name->name, len) == 0 &&
sub->name->name[len] == '.')
return 1;
return 0;
}
static char*
tktwincreate(Tk *tk, char *arg, char **val)
{
char *e;
TkTindex ix;
TkTitem *i;
TkText *tkt;
TkOptab tko[2];
USED(val);
tkt = TKobj(TkText, tk);
e = tktindparse(tk, &arg, &ix);
if(e != nil)
return e;
e = tktnewitem(TkTwin, 0, &i);
if(e != nil)
return e;
i->iwin = malloc(sizeof(TkTwind));
if(i->iwin == nil) {
tktfreeitems(tkt, i, 1);
return TkNomem;
}
memset(i->iwin, 0, sizeof(TkTwind));
i->iwin->align = Tkcenter;
i->iwin->ascent = -1;
tko[0].ptr = i->iwin;
tko[0].optab = twinopts;
tko[1].ptr = nil;
e = tkparse(tk->env->top, arg, tko, nil);
if(e != nil) {
err1:
tktfreeitems(tkt, i, 1);
return e;
}
e = tktwinchk(tk, i->iwin, nil);
if(e != nil)
goto err1;
e = tktsplititem(&ix);
if(e != nil)
goto err1;
tktiteminsert(tkt, &ix, i);
if(e != nil)
goto err1;
tktadjustind(tkt, TkTbyitemback, &ix);
tktwindsize(tk, &ix);
return nil;
}
static char*
tktwinnames(Tk *tk, char *arg, char **val)
{
char *e, *fmt;
TkTindex ix;
TkText *tkt = TKobj(TkText, tk);
USED(arg);
tktstartind(tkt, &ix);
fmt = "%s";
do {
if(ix.item->kind == TkTwin &&
ix.item->iwin->sub != nil &&
ix.item->iwin->sub->name != nil) {
e = tkvalue(val, fmt, ix.item->iwin->sub->name->name);
if(e != nil)
return e;
fmt = " %s";
}
} while(tktadjustind(tkt, TkTbyitem, &ix));
return nil;
}