ref: 83246e296ea433b65b9d295b5e08fedd39ff1ab7
dir: /libtk/windw.c/
#include "lib9.h"
#include "draw.h"
#include "tk.h"
#include "canvs.h"
#include "textw.h"
#include "kernel.h"
TkCtxt*
tknewctxt(Display *d)
{
TkCtxt *c;
c = malloc(sizeof(TkCtxt));
if(c == nil)
return nil;
c->lock = libqlalloc();
if(c->lock == nil){
free(c);
return nil;
}
if (tkextnnewctxt(c) != 0) {
free(c->lock);
free(c);
return nil;
}
c->display = d;
return c;
}
void
tkfreectxt(TkCtxt *c)
{
int locked;
Display *d;
if(c == nil)
return;
tkextnfreectxt(c);
d = c->display;
locked = lockdisplay(d);
tkfreecolcache(c);
freeimage(c->i);
freeimage(c->ia);
if(locked)
unlockdisplay(d);
libqlfree(c->lock);
free(c);
}
Image*
tkitmp(TkEnv *e, Point p, int fillcol)
{
Image *i, **ip;
TkTop *t;
TkCtxt *ti;
Display *d;
Rectangle r;
ulong pix;
int alpha;
t = e->top;
ti = t->ctxt;
d = t->display;
pix = e->colors[fillcol];
alpha = (pix & 0xff) != 0xff;
ip = alpha ? &ti->ia : &ti->i;
if(*ip != nil) {
i = *ip;
if(p.x <= i->r.max.x && p.y <= i->r.max.y) {
r.min = ZP;
r.max = p;
if (alpha)
drawop(i, r, nil, nil, ZP, Clear);
draw(i, r, tkgc(e, fillcol), nil, ZP);
return i;
}
r = i->r;
freeimage(i);
if(p.x < r.max.x)
p.x = r.max.x;
if(p.y < r.max.y)
p.y = r.max.y;
}
r.min = ZP;
r.max = p;
*ip = allocimage(d, r, alpha?RGBA32:d->image->chan, 0, pix);
return *ip;
}
void
tkgeomchg(Tk *tk, TkGeom *g, int bd)
{
int w, h;
void (*geomfn)(Tk*);
if(memcmp(&tk->req, g, sizeof(TkGeom)) == 0 && bd == tk->borderwidth)
return;
geomfn = tkmethod[tk->type]->geom;
if(geomfn != nil)
geomfn(tk);
if(tk->master != nil) {
tkpackqit(tk->master);
tkrunpack(tk->env->top);
}
else
if(tk->geom != nil) {
w = tk->req.width;
h = tk->req.height;
tk->req.width = 0;
tk->req.height = 0;
tk->geom(tk, tk->act.x, tk->act.y, w, h);
if (tk->slave) {
tkpackqit(tk);
tkrunpack(tk->env->top);
}
}
tkdeliver(tk, TkConfigure, g);
}
/*
* return the widget within tk with by point p (in widget coords)
*/
Tk*
tkinwindow(Tk *tk, Point p, int descend)
{
Tk *f;
Point q;
if (ptinrect(p, tkrect(tk, 1)) == 0)
return nil;
for (;;) {
if (descend && tkmethod[tk->type]->inwindow != nil)
f = tkmethod[tk->type]->inwindow(tk, &p);
else {
q = p;
for (f = tk->slave; f; f = f->next) {
q.x = p.x - (f->act.x + f->borderwidth);
q.y = p.y - (f->act.y + f->borderwidth);
if (ptinrect(q, tkrect(f, 1)))
break;
}
p = q;
}
if (f == nil || f == tk)
return tk;
tk = f;
}
}
Tk*
tkfindfocus(TkTop *t, int x, int y, int descend)
{
Point p, q;
Tk *tk, *f;
TkWin *tkw;
p.x = x;
p.y = y;
for(f = t->windows; f != nil; f = TKobj(TkWin, f)->next) {
assert(f->flag&Tkwindow);
if(f->flag & Tkmapped) {
tkw = TKobj(TkWin, f);
q.x = p.x - (tkw->act.x+f->borderwidth);
q.y = p.y - (tkw->act.y+f->borderwidth);
tk = tkinwindow(f, q, descend);
if(tk != nil)
return tk;
}
}
return nil;
}
void
tkmovewin(Tk *tk, Point p)
{
TkWin *tkw;
if((tk->flag & Tkwindow) == 0)
return;
tkw = TKobj(TkWin, tk);
if(! eqpt(p, tkw->req)){
tkw->req = p;
tkw->changed = 1;
}
}
void
tkmoveresize(Tk *tk, int x, int y, int w, int h)
{
TkWin *tkw;
USED(x);
USED(y);
assert(tk->flag&Tkwindow);
tkw = TKobj(TkWin, tk);
if(w < 0)
w = 0;
if(h < 0)
h = 0;
//print("moveresize %s %d %d +[%d %d], callerpc %lux\n", tk->name->name, x, y, w, h, getcallerpc(&tk));
tk->req.width = w;
tk->req.height = h;
tk->act = tk->req;
/* XXX perhaps should actually suspend the window here? */
tkw->changed = 1;
}
static void
tkexterncreatewin(Tk *tk, Rectangle r)
{
TkWin *tkw;
TkTop *top;
char *name;
top = tk->env->top;
tkw = TKobj(TkWin, tk);
/*
* for a choicebutton menu, use the name of the choicebutton which created it
*/
if(tk->name == nil){
name = tkw->cbname;
assert(name != nil);
} else
name = tk->name->name;
tkw->reqid++;
tkwreq(top, "!reshape %s %d %d %d %d %d", name, tkw->reqid, r.min.x, r.min.y, r.max.x, r.max.y);
tkw->changed = 0;
tk->flag |= Tksuspended;
}
/*
* return non-zero if the window size has changed (XXX choose better return value/function name!)
*/
int
tkupdatewinsize(Tk *tk)
{
TkWin *tkw;
Image *previ;
Rectangle r, or;
int bw2;
tkw = TKobj(TkWin, tk);
bw2 = 2*tk->borderwidth;
r.min.x = tkw->req.x;
r.min.y = tkw->req.y;
r.max.x = r.min.x + tk->act.width + bw2;
r.max.y = r.min.y + tk->act.height + bw2;
previ = tkw->image;
if(previ != nil){
or.min.x = tkw->act.x;
or.min.y = tkw->act.y;
or.max.x = tkw->act.x + Dx(previ->r);
or.max.y = tkw->act.y + Dy(previ->r);
if(eqrect(or, r))
return 0;
}
tkexterncreatewin(tk, r);
return 1;
}
static char*
tkdrawslaves1(Tk *tk, Point orig, Image *dst, int *dirty)
{
Tk *f;
char *e = nil;
Point worig;
Rectangle r, oclip;
worig.x = orig.x + tk->act.x + tk->borderwidth;
worig.y = orig.y + tk->act.y + tk->borderwidth;
r = rectaddpt(tk->dirty, worig);
if (Dx(r) > 0 && rectXrect(r, dst->clipr)) {
e = tkmethod[tk->type]->draw(tk, orig);
tk->dirty = bbnil;
*dirty = 1;
}
if(e != nil)
return e;
/*
* grids need clipping
* XXX BUG: they can't, 'cos text widgets don't clip appropriately.
*/
if (tk->grid != nil) {
r = rectaddpt(tkrect(tk, 0), worig);
if (rectclip(&r, dst->clipr) == 0)
return nil;
oclip = dst->clipr;
replclipr(dst, 0, r);
}
for(f = tk->slave; e == nil && f; f = f->next)
e = tkdrawslaves1(f, worig, dst, dirty);
if (tk->grid != nil)
replclipr(dst, 0, oclip);
return e;
}
char*
tkdrawslaves(Tk *tk, Point orig, int *dirty)
{
Image *i;
char *e;
i = tkimageof(tk);
if (i == nil)
return nil;
e = tkdrawslaves1(tk, orig, i, dirty);
return e;
}
char*
tkupdate(TkTop *t)
{
Tk* tk;
int locked;
TkWin *tkw;
Display *d;
char *e;
int dirty = 0;
if(t->noupdate)
return nil;
d = t->display;
locked = lockdisplay(d);
tk = t->windows;
while(tk) {
tkw = TKobj(TkWin, tk);
if((tk->flag & (Tkmapped|Tksuspended)) == Tkmapped) {
if (tkupdatewinsize(tk) == 0){
e = tkdrawslaves(tk, ZP, &dirty);
if(e != nil)
return e;
}
}
tk = tkw->next;
}
if (dirty || t->dirty) {
flushimage(d, 1);
t->dirty = 0;
}
if(locked)
unlockdisplay(d);
return nil;
}
int
tkischild(Tk *tk, Tk *child)
{
while(child != nil && child != tk){
if(child->master)
child = child->master;
else
child = child->parent;
}
return child == tk;
}
void
tksetbits(Tk *tk, int mask)
{
tk->flag |= mask;
for(tk = tk->slave; tk; tk = tk->next)
tksetbits(tk, mask);
}
char*
tkmap(Tk *tk)
{
/*
is this necessary?
tkw = TKobj(TkWin, tk);
if(tkw->image != nil)
tkwreq(tk->env->top, "raise %s", tk->name->name);
*/
if(tk->flag & Tkmapped)
return nil;
tk->flag |= Tkmapped;
tkmoveresize(tk, 0, 0, tk->act.width, tk->act.height);
tkdeliver(tk, TkMap, nil);
return nil;
//tkupdate(tk->env->top);
}
void
tkunmap(Tk *tk)
{
TkTop *t;
TkCtxt *c;
while(tk->master)
tk = tk->master;
if((tk->flag & Tkmapped) == 0)
return;
t = tk->env->top;
c = t->ctxt;
if(tkischild(tk, c->mgrab))
tksetmgrab(t, nil);
if(tkischild(tk, c->entered)){
tkdeliver(c->entered, TkLeave, nil);
c->entered = nil;
}
if(tk == t->root)
tksetglobalfocus(t, 0);
tk->flag &= ~(Tkmapped|Tksuspended);
tkdestroywinimage(tk);
tkdeliver(tk, TkUnmap, nil);
tkenterleave(t);
/* XXX should unmap menus too */
}
Image*
tkimageof(Tk *tk)
{
while(tk) {
if(tk->flag & Tkwindow)
return TKobj(TkWin, tk)->image;
if(tk->parent != nil) {
tk = tk->parent;
switch(tk->type) {
case TKmenu:
return TKobj(TkWin, tk)->image;
case TKcanvas:
return TKobj(TkCanvas, tk)->image;
case TKtext:
return TKobj(TkText, tk)->image;
}
abort();
}
tk = tk->master;
}
return nil;
}
void
tktopopt(Tk *tk, char *opt)
{
TkTop *t;
TkWin *tkw;
TkOptab tko[4];
tkw = TKobj(TkWin, tk);
t = tk->env->top;
tko[0].ptr = tkw;
tko[0].optab = tktop;
tko[1].ptr = tk;
tko[1].optab = tkgeneric;
tko[2].ptr = t;
tko[2].optab = tktopdbg;
tko[3].ptr = nil;
tkparse(t, opt, tko, nil);
}
/* general compare - compare top-left corners, y takes priority */
static int
tkfcmpgen(void *ap, void *bp)
{
TkWinfo *a = ap, *b = bp;
if (a->r.min.y > b->r.min.y)
return 1;
if (a->r.min.y < b->r.min.y)
return -1;
if (a->r.min.x > b->r.min.x)
return 1;
if (a->r.min.x < b->r.min.x)
return -1;
return 0;
}
/* compare x-coords only */
static int
tkfcmpx(void *ap, void *bp)
{
TkWinfo *a = ap, *b = bp;
return a->r.min.x - b->r.min.x;
}
/* compare y-coords only */
static int
tkfcmpy(void *ap, void *bp)
{
TkWinfo *a = ap, *b = bp;
return a->r.min.y - b->r.min.y;
}
static void
tkfintervalintersect(s32 min1, s32 max1, s32 min2, s32 max2, s32 *min, s32 *max)
{
if (min1 < min2)
min1 = min2;
if (max1 > max2)
max1 = max2;
if (max1 > min1) {
*min = min1;
*max = max1;
} else
*max = *min; /* no intersection */
}
void
tksortfocusorder(TkWinfo *inf, int n)
{
int i;
Rectangle overlap, r;
int (*cmpfn)(void*, void*);
overlap = inf[0].r;
for (i = 0; i < n; i++) {
r = inf[i].r;
tkfintervalintersect(overlap.min.x, overlap.max.x,
r.min.x, r.max.x, &overlap.min.x, &overlap.max.x);
tkfintervalintersect(overlap.min.y, overlap.max.y,
r.min.y, r.max.y, &overlap.min.y, &overlap.max.y);
}
if (Dx(overlap) > 0)
cmpfn = tkfcmpy;
else if (Dy(overlap) > 0)
cmpfn = tkfcmpx;
else
cmpfn = tkfcmpgen;
qsort(inf, n, sizeof(*inf), cmpfn);
}
void
tkappendfocusorder(Tk *tk)
{
TkTop *tkt;
tkt = tk->env->top;
if (tk->flag & Tktakefocus)
tkt->focusorder[tkt->nfocus++] = tk;
if (tkmethod[tk->type]->focusorder != nil)
tkmethod[tk->type]->focusorder(tk);
}
void
tkbuildfocusorder(TkTop *tkt)
{
Tk *tk;
int n;
if (tkt->focusorder != nil)
free(tkt->focusorder);
n = 0;
for (tk = tkt->root; tk != nil; tk = tk->siblings)
if (tk->flag & Tktakefocus)
n++;
if (n == 0) {
tkt->focusorder = nil;
return;
}
tkt->focusorder = malloc(sizeof(*tkt->focusorder) * n);
tkt->nfocus = 0;
if (tkt->focusorder == nil)
return;
tkappendfocusorder(tkt->root);
}
void
tkdirtyfocusorder(TkTop *tkt)
{
free(tkt->focusorder);
tkt->focusorder = nil;
tkt->nfocus = 0;
}
#define O(t, e) ((long)(&((t*)0)->e))
#define OA(t, e) ((long)(((t*)0)->e))
typedef struct TkSee TkSee;
struct TkSee {
int r[4];
int p[2];
int query;
};
static
TkOption seeopts[] = {
"rectangle", OPTfrac, OA(TkSee, r), IAUX(4),
"point", OPTfrac, OA(TkSee, p), IAUX(2),
"where", OPTbool, O(TkSee, query), nil,
nil
};
char*
tkseecmd(TkTop *t, char *arg, char **ret)
{
TkOptab tko[2];
TkSee opts;
TkName *names;
Tk *tk;
char *e;
Rectangle vr;
Point vp;
opts.r[0] = bbnil.min.x;
opts.r[1] = bbnil.min.y;
opts.r[2] = bbnil.max.x;
opts.r[3] = bbnil.max.y;
opts.p[0] = bbnil.max.x;
opts.p[1] = bbnil.max.y;
opts.query = 0;
tko[0].ptr = &opts;
tko[0].optab = seeopts;
tko[1].ptr = nil;
names = nil;
e = tkparse(t, arg, tko, &names);
if (e != nil)
return e;
if (names == nil)
return TkBadwp;
tk = tklook(t, names->name, 0);
tkfreename(names);
if (tk == nil)
return TkBadwp;
if (opts.query) {
if (!tkvisiblerect(tk, &vr))
return nil;
/* XXX should this be converted into screen coords? */
return tkvalue(ret, "%d %d %d %d", vr.min.x, vr.min.y, vr.max.x, vr.max.y);
}
vr.min.x = opts.r[0];
vr.min.y = opts.r[1];
vr.max.x = opts.r[2];
vr.max.y = opts.r[3];
vp.x = opts.p[0];
vp.y = opts.p[1];
if (eqrect(vr, bbnil))
vr = tkrect(tk, 1);
if (eqpt(vp, bbnil.max))
vp = vr.min;
tksee(tk, vr, vp);
return nil;
}
/*
* make rectangle r in widget tk visible if possible;
* if not possible, at least make point p visible.
*/
void
tksee(Tk *tk, Rectangle r, Point p)
{
Point g;
//print("tksee %R, %P in %s\n", r, p, tk->name->name);
g = Pt(tk->borderwidth, tk->borderwidth);
if(tk->parent != nil) {
g = addpt(g, tkmethod[tk->parent->type]->relpos(tk));
tk = tk->parent;
} else {
g.x += tk->act.x;
g.y += tk->act.y;
tk = tk->master;
}
r = rectaddpt(r, g);
p = addpt(p, g);
while (tk != nil) {
if (tkmethod[tk->type]->see != nil){
//print("see r %R, p %P in %s\n", r, p, tk->name->name);
tkmethod[tk->type]->see(tk, &r, &p);
//print("now r %R, p %P\n", r, p);
}
g = Pt(tk->borderwidth, tk->borderwidth);
if (tk->parent != nil) {
g = addpt(g, tkmethod[tk->parent->type]->relpos(tk));
tk = tk->parent;
} else {
g.x += tk->act.x;
g.y += tk->act.y;
tk = tk->master;
}
r = rectaddpt(r, g);
p = addpt(p, g);
}
}