ref: 84989770721391018dd6a247831cb79a43c1d86b
dir: /appl/spree/clients/cards.b/
implement Cards;
include "sys.m";
sys: Sys;
include "draw.m";
draw: Draw;
Point, Rect, Display, Image, Font: import draw;
include "tk.m";
tk: Tk;
include "tkclient.m";
tkclient: Tkclient;
include "math.m";
math: Math;
Cards: module {
init: fn(ctxt: ref Draw->Context, argv: list of string);
};
# fairly general card clique client.
# inherent restrictions:
# no dragging of cards visible over the net; it's unclear how
# to handle the coordinate spaces involved
Object: adt {
id: int;
pick {
Card =>
parentid: int;
face: int; # 1 is face up
number: int;
rear: int;
Member =>
cid: int;
name: string;
Stack =>
o: ref Layobject.Stack;
Widget =>
o: ref Layobject.Widget;
Menuentry =>
parentid: int;
text: string;
Layoutframe =>
lay: ref Layout.Frame;
Layoutobj =>
lay: ref Layout.Obj;
Scoretable =>
scores: array of ref Object.Score;
Score =>
row: array of (int, string);
height: int;
Button =>
Other =>
}
};
# specify how an object is laid out.
Layout: adt {
id: int;
parentid: int;
opts: string; # pack options
orientation: int;
pick {
Frame =>
lays: cyclic array of ref Layout;
Obj =>
layid: int; # reference to layid of laid-out object
}
};
# an object which can be laid out on the canvas
Layobject: adt {
id: int;
parentid: int;
w: string;
size: Point;
needrepack: int;
orientation: int;
layid: int;
pick {
Stack =>
style: int;
cards: array of ref Object.Card; # fake objects when invisible
pos: Point; # top-left origin of first card in stack
delta: Point; # card offset delta.
animq: ref Queue; # queue of pending animations.
actions: int;
maxcards: int;
title: string;
visible: int;
n: int; # for concealed stacks, n cards in stack.
ownerid: int; # owner of selection
sel: ref Selection;
showsize,
hassize: int;
Widget =>
wtype: string;
entries: array of ref Object.Menuentry;
cmd: string; # only used for entry widgets
width: int;
}
};
Animation: adt {
tag: string; # canvas tag common to cards being moved.
srcpt: Point; # where cards are coming from.
cards: array of ref Object.Card; # objects being transferred.
dstid: int;
index: int;
waitch: chan of ref Animation; # notification comes on this chan when finished.
};
Selection: adt {
pick {
XRange =>
r: Range;
Indexes =>
idxl: list of int;
Empty =>
}
};
MAXPLAYERS: con 4;
# layout actions
lFRAME, lOBJECT: con iota;
# possible actions on a card on a stack.
aCLICK: con 1<<iota;
# styles of stack display
styDISPLAY, styPILE: con iota;
# orientations
oLEFT, oRIGHT, oUP, oDOWN: con iota;
Range: adt {
start, end: int;
};
T: type ref Animation;
Queue: adt {
h, t: list of T;
put: fn(q: self ref Queue, s: T);
get: fn(q: self ref Queue): T;
isempty: fn(q: self ref Queue): int;
peek: fn(q: self ref Queue): T;
};
configcmds := array[] of {
"frame .buts",
"frame .cf",
"canvas .c -width 400 -height 450 -bg green",
"label .status -text 0",
"checkbutton .buts.scores -text {Show scores} -command {send cmd scores}",
"button .buts.sizetofit -text {Fit} -command {send cmd sizetofit}",
"checkbutton .buts.debug -text {Debug} -variable debug -command {send cmd debug}",
"pack .buts.sizetofit .buts.debug .status -in .buts -side left",
"pack .buts -side top -fill x",
"pack .c -in .cf -side top -fill both -expand 1",
"pack .cf -side top -fill both -expand 1",
"bind .c <Button-1> {send cmd b1 %X %Y}",
"bind .c <ButtonRelease-1} {send cmd b1r %X %Y}",
"bind .c <Button-2> {send cmd b2 %X %Y}",
"bind .c <ButtonRelease-2> {send cmd b2r %X %Y}",
"bind .c <ButtonPress-3> {send cmd b3 %X %Y}",
"bind .c <ButtonRelease-3> {send cmd b3r %X %Y}",
"bind . <Configure> {send cmd config}",
"pack propagate .buts 0",
".status configure -text {}",
"pack propagate . 0",
};
objects: array of ref Object;
layobjects := array[20] of list of ref Layobject;
members := array[8] of list of ref Object.Member;
win: ref Tk->Toplevel;
drawctxt: ref Draw->Context;
me: ref Object.Member;
layout: ref Layout;
scoretable: ref Object.Scoretable;
showingscores := 0;
debugging := 0;
stderr: ref Sys->FD;
animfinishedch: chan of (ref Animation, chan of chan of ref Animation);
yieldch: chan of int;
cardlockch: chan of int;
notifych: chan of string;
tickregisterch, tickunregisterch: chan of chan of int;
starttime := 0;
cvsfont: ref Font;
packwin: ref Tk->Toplevel; # invisible; used to steal tk's packing algorithms...
packobjs: list of ref Layobject;
repackobjs: list of ref Layobject;
needresize := 0;
needrepack := 0;
animid := 0;
fakeid := -2; # ids allocated to "fake" cards in private hands; descending
nimages := 0;
Hiddenpos := Point(5000, 5000);
cliquefd: ref Sys->FD;
init(ctxt: ref Draw->Context, nil: list of string)
{
sys = load Sys Sys->PATH;
stderr = sys->fildes(2);
draw = load Draw Draw->PATH;
tk = load Tk Tk->PATH;
math = load Math Math->PATH;
tkclient = load Tkclient Tkclient->PATH;
if (tkclient == nil) {
sys->fprint(stderr, "cards: cannot load %s: %r\n", Tkclient->PATH);
raise "fail:bad module";
}
tkclient->init();
drawctxt = ctxt;
client1();
}
# maximum number of rears (overridden by actual rear images)
rearcolours := array[] of {
int 16r0000ccff,
int 16rff0000ff,
int 16rffff00ff,
int 16r008000ff,
int 16rffffffff,
int 16rffaa00ff,
int 16r00ffffff,
int 16r808080ff,
int 16r00ff00ff,
int 16r800000ff,
int 16r800080ff,
};
Rearborder := 3;
Border := 6;
Selectborder := 3;
cardsize: Point;
carddelta := Point(12, 15); # offset in order to see card number/suit
Selectcolour := "red";
Textfont := "/fonts/pelm/unicode.8.font";
client1()
{
cliquefd = sys->fildes(0);
if (readconfig() == -1)
raise "fail:error";
winctl: chan of string;
(win, winctl) = tkclient->toplevel(drawctxt, "-font " + Textfont,
"Cards", Tkclient->Appl);
cmd(win, ". unmap");
bcmd := chan of string;
tk->namechan(win, bcmd, "cmd");
srvcmd := chan of string;
tk->namechan(win, srvcmd, "srv");
if (readcardimages() == -1)
raise "fail:error";
for (i := 0; i < len configcmds; i++)
cmd(win, configcmds[i]);
tkclient->onscreen(win, nil);
tkclient->startinput(win, "kbd"::"ptr"::nil);
fontname := cmd(win, ".c cget -font");
cvsfont = Font.open(drawctxt.display, fontname);
if (cvsfont == nil) {
sys->fprint(stderr, "cards: cannot open font %s: %r\n", fontname);
raise "fail:error";
}
fontname = nil;
cardlockch = chan of int;
spawn lockproc();
yieldch = chan of int;
spawn yieldproc();
notifych = chan of string;
spawn notifierproc();
updatech := chan of array of byte;
spawn readproc(cliquefd, updatech);
spawn updateproc(updatech);
b1down := 0;
tickregisterch = chan of chan of int;
tickunregisterch = chan of chan of int;
spawn timeproc();
spawn eventproc(win);
for (;;) alt {
c := <-bcmd =>
(n, toks) := sys->tokenize(c, " ");
case hd toks {
"b3" =>
curp := Point(int cmd(win, ".c canvasx " + hd tl toks),
int cmd(win, ".c canvasy " + hd tl tl toks));
b3raise(bcmd, curp);
"b2" =>
curp := Point(int cmd(win, ".c canvasx " + hd tl toks),
int cmd(win, ".c canvasy " + hd tl tl toks));
dopan(bcmd, "b2", curp);
"b1" =>
if (!b1down) {
# b1 x y
# x and y in screen coords
curp := Point(int cmd(win, ".c canvasx " + hd tl toks),
int cmd(win, ".c canvasy " + hd tl tl toks));
b1down = b1action(bcmd, curp);
}
"b1r" =>
b1down = 0;
"entry" =>
id := int hd tl toks;
lock();
cc := "";
pick o := objects[id] {
Widget =>
cc = o.o.cmd;
* =>
sys->print("entry message from unknown obj: id %d\n", id);
}
unlock();
if (cc != nil) {
w := ".buts." + string id + ".b";
s := cmd(win, w + " get");
cardscmd(cc + " " + s);
cmd(win, w + " selection range 0 end");
cmd(win, "update");
}
"config" =>
lock();
needresize = 1;
updatearena();
unlock();
cmd(win, "update");
"scores" =>
if (scoretable == nil)
break;
if (!showingscores) {
cmd(win, ".c move score " + string -Hiddenpos.x + " " + string -Hiddenpos.y);
cmd(win, ".c raise score");
} else
cmd(win, ".c move score " + p2s(Hiddenpos));
cmd(win, "update");
showingscores = !showingscores;
"sizetofit" =>
lock();
sizetofit();
unlock();
cmd(win, "update");
"debug" =>
debugging = int cmd(win, "variable debug");
}
c := <-srvcmd => # from button or menu entry
cardscmd(c);
s := <-win.ctxt.ctl or
s = <-win.wreq or
s = <-winctl =>
if (s == "exit")
sys->write(cliquefd, array[0] of byte, 0);
tkclient->wmctl(win, s);
}
}
eventproc(win: ref Tk->Toplevel)
{
for(;;)alt{
s := <-win.ctxt.kbd =>
tk->keyboard(win, s);
s := <-win.ctxt.ptr =>
tk->pointer(win, *s);
}
}
readproc(fd: ref Sys->FD, updatech: chan of array of byte)
{
buf := rest := array[Sys->ATOMICIO * 2] of byte;
while ((n := sys->read(fd, rest, Sys->ATOMICIO)) > 0) {
updatech <-= rest[0:n];
rest = rest[n:];
if (len rest < Sys->ATOMICIO)
buf = rest = array[Sys->ATOMICIO * 2] of byte;
}
updatech <-= nil;
}
b1action(bcmd: chan of string, p: Point): int
{
(hitsomething, id) := hitcard(p);
if (!hitsomething) {
dopan(bcmd, "b1", p);
return 0;
}
if (id < 0) { # either error, or someone else's private card
sys->print("no card hit (%d)\n", id);
return 1;
}
lock();
if (objects[id] == nil) {
notify("it's gone");
unlock();
return 1;
}
stack: ref Layobject.Stack;
index := -1;
pick o := objects[id] {
Card =>
card := o;
parentid := card.parentid;
stack = stackobj(parentid);
for (index = 0; index < len stack.cards; index++)
if (stack.cards[index] == card)
break;
if (index == len stack.cards)
index = -1;
Stack =>
stack = o.o;
* =>
unlock();
return 1;
}
actions := stack.actions;
stackid := stack.id;
unlock();
# XXX potential problems when object ids get reused.
# the object id that we saw before the unlock()
# might now refer to a different object, so the user
# might be performing a different action to the one intended.
# this should be changed throughout... hmm.
if (actions == 0) {
notify("no way josé");
sys->print("no way: stack %d, actions %d\n", stackid, actions);
return 1;
}
cardscmd("click " + string stackid + " " + string index);
return 1;
}
dopan(bcmd: chan of string, b: string, p: Point)
{
r := b + "r";
for (;;) {
(n, toks) := sys->tokenize(<-bcmd, " ");
if (hd toks == b) {
pan(p, (int hd tl toks, int hd tl tl toks));
p = Point(int cmd(win, ".c canvasx " + hd tl toks),
int cmd(win, ".c canvasy " + hd tl tl toks));
cmd(win, "update");
} else if (hd toks == r)
return;
}
}
b3raise(bcmd: chan of string, p: Point)
{
currcard := -1;
above := "";
loop: for (;;) {
(nil, id) := hitcard(p);
if (id != currcard) {
if (currcard != -1 && above != nil)
cmd(win, ".c lower i" + string currcard + " " + above);
if (id == -1 || tagof(objects[id]) != tagof(Object.Card)) {
above = nil;
currcard = -1;
} else {
above = cmd(win, ".c find above i" + string id);
cmd(win, ".c raise i" + string id);
cmd(win, "update");
currcard = id;
}
}
(nil, toks) := sys->tokenize(<-bcmd, " ");
case hd toks {
"b3" =>
p = Point(int cmd(win, ".c canvasx " + hd tl toks),
int cmd(win, ".c canvasy " + hd tl tl toks));
"b3r" =>
break loop;
}
}
if (currcard != -1 && above != nil) {
cmd(win, ".c lower i" + string currcard + " " + above);
cmd(win, "update");
}
}
hitcard(p: Point): (int, int)
{
(nil, hitids) := sys->tokenize(cmd(win, ".c find overlapping " + r2s((p, p))), " ");
if (hitids == nil)
return (0, -1);
ids: list of string;
for (; hitids != nil; hitids = tl hitids)
ids = hd hitids :: ids;
for (; ids != nil; ids = tl ids) {
(nil, tags) := sys->tokenize(cmd(win, ".c gettags " + hd ids), " ");
for (; tags != nil; tags = tl tags) {
tag := hd tags;
if (tag[0] == 'i' || tag[0] == 'r' || tag[0] == 'n' || tag[0] == 'N')
return (1, int (hd tags)[1:]);
if (tag[0] == 's') # ignore selection
break;
}
if (tags == nil)
break;
}
return (1, -1);
}
cardscmd(s: string): int
{
if (debugging)
sys->print("cmd: %s\n", s);
if (sys->fprint(cliquefd, "%s", s) == -1) {
err := sys->sprint("%r");
notify(err);
sys->print("cmd error on '%s': %s\n", s, err);
return 0;
}
return 1;
}
updateproc(updatech: chan of array of byte)
{
wfd := sys->open("/prog/" + string sys->pctl(0, nil) + "/wait", Sys->OREAD);
spawn updateproc1(updatech);
buf := array[Sys->ATOMICIO] of byte;
n := sys->read(wfd, buf, len buf);
sys->print("updateproc process exited: %s\n", string buf[0:n]);
}
updateproc1(updatech: chan of array of byte)
{
animfinishedch = chan of (ref Animation, chan of chan of ref Animation);
first := 1;
for (;;) {
alt {
v := <-animfinishedch =>
lock();
animterminated(v);
updatearena();
cmd(win, "update");
unlock();
u := <-updatech =>
if (u == nil) {
# XXX notify user that clique has been hung up somehow
exit;
}
moretocome := 0;
if (len u > 2 && u[len u-1] == byte '*' && u[len u-2] == byte '\n') {
u = u[0:len u - 2];
moretocome = 1;
}
(nil, lines) := sys->tokenize(string u, "\n");
lock();
starttime = sys->millisec();
for (; lines != nil; lines = tl lines)
applyupdate(hd lines);
updatearena();
if (!moretocome) {
if (first) {
sizetofit();
first = 0;
}
cmd(win, "update");
}
unlock();
}
}
}
updatearena()
{
if (needrepack)
repackall();
if (needresize)
resizeall();
for (pstk := repackobjs; pstk != nil; pstk = tl pstk)
repackobj(hd pstk);
repackobjs = nil;
}
applyupdate(s: string)
{
if (debugging) {
sys->print("update: %s\n", s);
# showtk = 1;
}
(nt, toks) := sys->tokenize(s, " ");
case hd toks {
"create" =>
# create id parentid vis type
id := int hd tl toks;
if (id >= len objects)
objects = (array[len objects + 10] of ref Object)[0:] = objects;
if (objects[id] != nil)
panic(sys->sprint("object %d already exists!", id));
parentid := int hd tl tl toks;
vis := int hd tl tl tl toks;
objtype := tl tl tl tl toks;
case hd objtype {
"stack" =>
objects[id] = makestack(id, parentid, vis);
needrepack = 1;
"card" =>
stk := stackobj(parentid);
completeanim(stk);
if (!stk.visible) {
# if creating in a private stack, we assume
# that the cards were there already, and
# just make them real again.
# first find a fake card.
for (i := 0; i < len stk.cards; i++)
if (stk.cards[i].id < 0)
break;
c: ref Object.Card;
if (i == len stk.cards) {
# no fake cards - we'll create one instead.
# this can happen if we've entered halfway through
# a clique, so don't know how many cards people
# are holding.
c = makecard(id, stk);
insertcards(stk, array[] of {c}, len stk.cards);
} else {
c = stk.cards[i];
changecardid(c, id);
}
objects[id] = c;
} else {
objects[id] = c := makecard(id, stk);
insertcards(stk, array[] of {c}, len stk.cards);
}
"widget" =>
objects[id] = makewidget(id, parentid, hd tl objtype);
"menuentry" =>
objects[id] = makemenuentry(id, parentid, tl objtype);
"member" =>
objects[id] = ref Object.Member(id, -1, "");
"layframe" =>
lay := ref Layout.Frame(id, parentid, "", -1, nil);
objects[id] = ref Object.Layoutframe(id, lay);
addlayout(lay);
"layobj" =>
lay := ref Layout.Obj(id, parentid, "", -1, -1);
objects[id] = ref Object.Layoutobj(id, lay);
addlayout(lay);
"scoretable" =>
if (scoretable != nil)
panic("cannot make two scoretables");
scoretable = objects[id] = ref Object.Scoretable(id, nil);
"score" =>
pick l := objects[parentid] {
Scoretable =>
nl := array[len l.scores + 1] of ref Object.Score;
nl[0:] = l.scores;
nl[len nl - 1] = objects[id] = ref Object.Score(id, nil, 0);
l.scores = nl;
cmd(win, "pack .buts.scores -side left");
* =>
panic("score created outside scoretable object");
}
"button" =>
objects[id] = ref Object.Button(id);
cmd(win, "button .buts." + string id);
cmd(win, "pack .buts." + string id + " -side left");
* =>
if (parentid != -1)
sys->print("cards: unknown objtype: '%s'\n", hd objtype);
objects[id] = ref Object.Other(id);
}
"tx" =>
# tx src dst start end dstindex
src, dst: ref Layobject.Stack;
index: int;
r: Range;
(src, toks) = (stackobj(int hd tl toks), tl tl toks);
(dst, toks) = (stackobj(int hd toks), tl toks);
(r.start, toks) = (int hd toks, tl toks);
(r.end, toks) = (int hd toks, tl toks);
(index, toks) = (int hd toks, tl toks);
transfer(src, r, dst, index);
"del" =>
# del parent start end objs...
oo := objects[int hd tl toks]; # parent
r := Range(int hd tl tl toks, int hd tl tl tl toks);
pick o := oo {
Stack => # deleting cards from a stack.
stk := o.o;
completeanim(stk);
if (!stk.visible) {
# if deleting from a private area, we assume the cards aren't
# actually being deleted at all, but merely becoming
# invisible, so turn them into fakes.
for (i := r.start; i < r.end; i++) {
card := stk.cards[i];
objects[card.id] = nil;
changecardid(card, --fakeid);
cardsetattr(card, "face", "0" :: nil);
}
} else {
cards := extractcards(stk, r);
for (i := 0; i < len cards; i++)
destroy(cards[i]);
}
Layoutframe => # deleting the layout specification.
lay := o.lay;
if (r.start != 0 || r.end != len lay.lays)
panic("cannot partially delete layouts");
for (i := r.start; i < r.end; i++)
destroy(objects[lay.lays[i].id]);
lay.lays = nil;
needrepack = 1;
Widget =>
# must be a menu widget
cmd(win, ".buts." + string o.id + ".m delete " +
string r.start + " " + string r.end);
* =>
for (objs := tl tl tl tl toks; objs != nil; objs = tl objs)
destroy(objects[int hd objs]);
}
"set" =>
# set obj attr val
id := int hd tl toks;
(attr, val) := (hd tl tl toks, tl tl tl toks);
pick o := objects[id] {
Card =>
cardsetattr(o, attr, val);
Widget =>
widgetsetattr(o.o, attr, val);
Stack =>
stacksetattr(o.o, attr, val);
Member =>
membersetattr(o, attr, val);
Layoutframe =>
laysetattr(o.lay, attr, val);
Layoutobj =>
laysetattr(o.lay, attr, val);
Score =>
scoresetattr(o, attr, val);
Button =>
buttonsetattr(o, attr, val);
Menuentry =>
menuentrysetattr(o, attr, val);
* =>
sys->fprint(stderr, "unknown attr set on object(tag %d), %s\n", tagof(objects[id]), s);
}
"say" or
"remark" =>
notify(join(tl toks));
* =>
sys->fprint(stderr, "cards: unknown update message '%s'\n", s);
}
}
addlayout(lay: ref Layout)
{
pick lo := objects[lay.parentid] {
Layoutframe =>
l := lo.lay;
nl := array[len l.lays + 1] of ref Layout;
nl[0:] = l.lays;
nl[len nl - 1] = lay;
l.lays = nl;
* =>
if (layout == nil)
layout = lay;
else
panic("cannot make two layout objects");
}
}
makestack(id, parentid: int, vis: int): ref Object.Stack
{
o := ref Object.Stack(
id,
ref Layobject.Stack(
id,
parentid,
"", # pack widget name
(0, 0), # size
0, # needrepack
-1, # orientation
-1, # layid
-1, # style
nil, # cards
Hiddenpos, # pos
(0, 0), # delta
ref Queue,
0, # actions
0, # maxcards
"", # title
vis, # visible
0, # n
-1, # ownerid
ref Selection.Empty, # sel
1, # showsize
0 # hassize
)
);
cmd(win, ".c create rectangle -10 -10 -10 -10 -width 3 -tags r" + string id);
return o;
}
makewidget(id, parentid: int, wtype: string): ref Object.Widget
{
wctype := wtype;
if (wtype == "menu")
wctype = "menubutton";
# XXX the widget is put in a frame 'cos of bugs in the canvas
# to do with size propagation.
w := cmd(win, "frame .buts." + string id + " -bg transparent");
cmd(win, wctype + " " + w + ".b");
cmd(win, "pack " + w + ".b -fill both -expand 1");
case wtype {
"menu" =>
cmd(win, "menu " + w + ".m");
cmd(win, w + ".b configure -menu " + w + ".m" +
" -relief raised");
"entry" =>
cmd(win, "bind " + w + ".b <Key-\n> {send cmd entry " + string id + "}");
}
cmd(win, ".c create window -1000 -1000 -tags r" + string id +
" -window " + w + " -anchor nw");
o := ref Object.Widget(
id,
ref Layobject.Widget(
id,
parentid,
nil, # w
(0, 0), # size
0, # needrepack
-1, # orientation
-1, # style
wtype,
nil, # entries
"", # cmd
0 # width
)
);
return o;
}
menutitleid := 0; # hack to identify menu entries
makemenuentry(id, parentid: int, nil: list of string): ref Object.Menuentry
{
m := ".buts." + string parentid + ".m";
t := "@" + string menutitleid++;
cmd(win, m + " add command -text " + t);
return ref Object.Menuentry(id, parentid, t);
}
makecard(id: int, stack: ref Layobject.Stack): ref Object.Card
{
cmd(win, ".c create image 5000 5000 -anchor nw -tags i" + string id);
return ref Object.Card(id, stack.id, -1, -1, 0);
}
buttonsetattr(b: ref Object.Button, attr: string, val: list of string)
{
w := ".buts." + string b.id;
case attr {
"text" =>
cmd(win, w + " configure -text '" + join(val));
"command" =>
cmd(win, w + " configure -command 'send srv " + join(val));
* =>
sys->print("unknown attribute on button: %s\n", attr);
}
}
widgetsetattr(b: ref Layobject.Widget, attr: string, val: list of string)
{
w := ".buts." + string b.id + ".b";
case attr {
"text" =>
t := join(val);
if (b.wtype == "entry") {
cmd(win, w + " delete 0 end");
cmd(win, w + " insert 0 '" + t);
cmd(win, w + " select 0 end"); # XXX ??
} else {
cmd(win, w + " configure -text '" + t);
needresize = 1;
}
"command" =>
case b.wtype {
"button" =>
cmd(win, w + " configure -command 'send srv " + join(val));
"entry" =>
b.cmd = join(val);
}
"width" => # width in characters
b.width = int hd val;
sys->print("configuring %s for width %s\n", w, hd val);
cmd(win, w + " configure -width " + hd val + "w");
needresize = 1;
"layid" =>
setlayid(b, int hd val);
* =>
sys->print("unknown attribute on button: %s\n", attr);
}
}
findmenuentry(m: string, title: string): int
{
end := int cmd(win, m + " index end");
for (i := 0; i <= end; i++) {
t := cmd(win, m + " entrycget " + string i + " -text");
if (t == title)
return i;
}
return -1;
}
menuentrysetattr(e: ref Object.Menuentry, attr: string, val: list of string)
{
m := ".buts." + string e.parentid + ".m";
idx := findmenuentry(m, e.text);
if (idx == -1) {
sys->print("couldn't find menu entry '%s'\n", e.text);
return;
}
case attr {
"text" =>
t := join(val);
cmd(win, m + " entryconfigure " + string idx +" -text '" + t);
e.text = t;
"command" =>
cmd(win, m + " entryconfigure " + string idx +
" -command 'send srv " + join(val));
* =>
sys->print("unknown attribute on menu entry: %s\n", attr);
}
}
stacksetattr(stack: ref Layobject.Stack, attr: string, val: list of string)
{
id := string stack.id;
case attr {
"maxcards" =>
stack.maxcards = int hd val;
needresize = 1;
"layid" =>
setlayid(stack, int hd val);
"showsize" =>
stack.showsize = int hd val;
showsize(stack);
"title" =>
title := join(val);
if (title != stack.title) {
if (stack.title == nil) {
cmd(win, ".c create text 5000 6000 -anchor n -tags t" + string id +
" -fill #ffffaa");
needresize = 1;
} else if (title == nil) {
cmd(win, ".c delete t" + string id);
needresize = 1;
}
if (title != nil)
cmd(win, ".c itemconfigure t" + string id + " -text '" + title);
stack.title = title;
}
"n" =>
# there are "n" cards in this stack, honest guv.
n := int hd val;
if (!stack.visible) {
if (n > len stack.cards) {
a := array[n - len stack.cards] of ref Object.Card;
for (i := 0; i < len a; i++) {
a[i] = makecard(--fakeid, stack);
cardsetattr(a[i], "face", "0" :: nil);
}
insertcards(stack, a, len stack.cards);
} else if (n < len stack.cards) {
for (i := len stack.cards - 1; i >= n; i--)
if (stack.cards[i].id >= 0)
break;
cards := extractcards(stack, (i + 1, len stack.cards));
for (i = 0; i < len cards; i++)
destroy(cards[i]);
}
}
stack.n = n;
"style" =>
case hd val {
"pile" =>
stack.style = styPILE;
"display" =>
stack.style = styDISPLAY;
* =>
sys->print("unknown stack style '%s'\n", hd val);
}
needresize = 1;
"owner" =>
if (val != nil)
stack.ownerid = int hd val;
else
stack.ownerid = -1;
changesel(stack, stack.sel);
"sel" =>
sel: ref Selection;
if (val == nil)
sel = ref Selection.Empty;
else if (tl val != nil && hd tl val == "-")
sel = ref Selection.XRange((int hd val, int hd tl tl val));
else {
idxl: list of int;
for (; val != nil; val = tl val)
idxl = int hd val :: idxl;
sel = ref Selection.Indexes(idxl);
}
changesel(stack, sel);
* =>
if (len attr >= len "actions" && attr[0:len "actions"] == "actions") {
oldactions := stack.actions;
act := 0;
for (; val != nil; val = tl val) {
case hd val {
"click" =>
act |= aCLICK;
* =>
sys->print("unknown action '%s'\n", hd val);
}
}
stack.actions = act;
} else
sys->fprint(stderr, "bad stack attr '%s'\n", attr);
}
}
showsize(stack: ref Layobject.Stack)
{
id := string stack.id;
needsize := stack.showsize && len stack.cards > 0 && stack.style == styPILE;
if (needsize != stack.hassize) {
if (stack.hassize)
cmd(win, ".c delete n" + id + " N" + id);
else {
cmd(win, ".c create rectangle -5000 0 0 0 -fill #ffffaa -tags n" + id);
cmd(win, ".c create text -5000 0 -anchor sw -fill red -tags N" + id);
}
stack.hassize = needsize;
}
if (needsize) {
cmd(win, ".c itemconfigure N" + id + " -text " + string len stack.cards);
sr := cardrect(stack, (len stack.cards - 1, len stack.cards));
cmd(win, ".c coords N" + id + " " + p2s((sr.min.x, sr.max.y)));
bbox := cmd(win, ".c bbox N" + id);
cmd(win, ".c coords n" + id + " " + bbox);
cmd(win, ".c raise n" + id + "; .c raise N" + id);
}
}
changesel(stack: ref Layobject.Stack, newsel: ref Selection)
{
sid := "s" + string stack.id;
cmd(win, ".c delete " + sid);
if (me != nil && stack.ownerid == me.cid) {
pick sel := newsel {
Indexes =>
for (l := sel.idxl; l != nil; l = tl l) {
s := cmd(win, ".c create rectangle " +
r2s(cardrect(stack, (hd l, hd l + 1)).inset(-1)) +
" -width " + string Selectborder +
" -outline " + Selectcolour +
" -tags {" + sid + " " + sid + "." + string hd l + "}");
cmd(win, ".c lower " + s + " i" + string stack.cards[hd l].id);
}
XRange =>
cmd(win, ".c create rectangle " +
r2s(cardrect(stack, sel.r).inset(-1)) +
" -outline " + Selectcolour +
" -width " + string Selectborder +
" -tags " + sid);
}
}
stack.sel = newsel;
}
cardsetattr(card: ref Object.Card, attr: string, val: list of string)
{
id := string card.id;
case attr {
"face" =>
card.face = int hd val;
if (card.face) {
if (card.number != -1)
cmd(win, ".c itemconfigure i" + id + " -image c" + string card.number );
} else
cmd(win, ".c itemconfigure i" + id + " -image rear" + string card.rear);
"number" =>
card.number = int hd val;
if (card.face)
cmd(win, ".c itemconfigure i" + id + " -image c" + string card.number );
"rear" =>
card.rear = int hd val;
if (card.face == 0)
cmd(win, ".c itemconfigure i" + id + " -image rear" + string card.rear);
* =>
sys->print("unknown attribute on card: %s\n", attr);
}
}
setlayid(layobj: ref Layobject, layid: int)
{
if (layobj.layid != -1)
panic("obj already has a layout id (" + string layobj.layid + ")");
layobj.layid = layid;
x := layobj.layid % len layobjects;
layobjects[x] = layobj :: layobjects[x];
needrepack = 1;
}
membersetattr(p: ref Object.Member, attr: string, val: list of string)
{
case attr {
"you" =>
me = p;
p.cid = int hd val;
for (i := 0; i < len objects; i++) {
if (objects[i] != nil) {
pick o := objects[i] {
Stack =>
if (o.o.ownerid == p.cid)
objneedsrepack(o.o);
}
}
}
"name" =>
p.name = hd val;
"id" =>
p.cid = int hd val;
"status" =>
if (p == me)
cmd(win, ".status configure -text '" + join(val));
"cliquetitle" =>
if (p == me)
tkclient->settitle(win, join(val));
* =>
sys->print("unknown attribute on member: %s\n", attr);
}
}
laysetattr(lay: ref Layout, attr: string, val: list of string)
{
case attr {
"opts" =>
# orientation opts
case hd val {
"up" =>
lay.orientation = oUP;
"down" =>
lay.orientation = oDOWN;
"left" =>
lay.orientation = oLEFT;
"right" =>
lay.orientation = oRIGHT;
* =>
sys->print("unknown orientation '%s'\n", hd val);
}
lay.opts = join(tl val);
"layid" =>
# sys->print("layout obj %d => layid %s\n", lay.id, hd val);
pick l := lay {
Obj =>
l.layid = int hd val;
needrepack = 1;
* =>
sys->print("cannot set layid on Layout.Frame!\n");
}
* =>
sys->print("unknown attribute on lay: %s\n", attr);
}
needrepack = 1;
}
scoresetattr(score: ref Object.Score, attr: string, val: list of string)
{
if (attr != "score")
return;
cmd(win, ".c delete score");
Padx: con 10; # padding to the right of each item
Pady: con 6; # padding below each item.
n := len val;
row := score.row = array[n] of (int, string);
height := 0;
# calculate values for this row
for ((col, vl) := (0, val); vl != nil; (col, vl) = (col + 1, tl vl)) {
v := hd vl;
size := textsize(v);
size.y += Pady;
if (size.y > height)
height = size.y;
row[col] = (size.x + Padx, v);
}
score.height = height;
totheight := 0;
scores := scoretable.scores;
# calculate number of columns
ncols := 0;
for (i := 0; i < len scores; i++)
if (len scores[i].row > ncols)
ncols = len scores[i].row;
# calculate column widths
colwidths := array[ncols] of {* => 0};
for (i = 0; i < len scores; i++) {
r := scores[i].row;
for (j := 0; j < len r; j++) {
(w, nil) := r[j];
if (w > colwidths[j])
colwidths[j] = w;
}
totheight += scores[i].height;
}
# create all table items
p := Hiddenpos;
for (i = 0; i < len scores; i++) {
p.x = Hiddenpos.x;
r := scores[i].row;
for (j := 0; j < len r; j++) {
(w, text) := r[j];
cmd(win, ".c create text " + p2s(p) + " -anchor nw -tags {score scoreent}-text '" + text);
p.x += colwidths[j];
}
p.y += scores[i].height;
}
r := Rect(Hiddenpos, p);
r.min.x -= Padx;
r.max.y -= Pady / 2;
cmd(win, ".c create rectangle " + r2s(r) + " -fill #ffffaa -tags score");
# horizontal lines
y := 0;
for (i = 0; i < len scores - 1; i++) {
ly := y + scores[i].height - Pady / 2;
cmd(win, ".c create line " + r2s(((r.min.x, ly), (r.max.x, ly))) + " -fill gray -tags score");
y += scores[i].height;
}
cmd(win, ".c raise scoreent");
cmd(win, ".c move score " + p2s(Hiddenpos.sub(r.min)));
}
textsize(s: string): Point
{
return (cvsfont.width(s), cvsfont.height);
}
changecardid(c: ref Object.Card, newid: int)
{
(nil, tags) := sys->tokenize(cmd(win, ".c gettags i" + string c.id), " ");
for (; tags != nil; tags = tl tags) {
tag := hd tags;
if (tag[0] >= '0' && tag[0] <= '9')
break;
}
cvsid := hd tags;
cmd(win, ".c dtag " + cvsid + " i" + string c.id);
c.id = newid;
cmd(win, ".c addtag i" + string c.id + " withtag " + cvsid);
}
stackobj(id: int): ref Layobject.Stack
{
obj := objects[id];
if (obj == nil)
panic("nil stack object");
pick o := obj {
Stack =>
return o.o;
* =>
panic("expected obj " + string id + " to be a stack");
}
return nil;
}
# if there are updates pending on the stack,
# then wait for them all to finish before we can do
# any operations on the stack (e.g. insert, delete, create, etc)
completeanim(stk: ref Layobject.Stack)
{
while (!stk.animq.isempty())
animterminated(<-animfinishedch);
}
transfer(src: ref Layobject.Stack, r: Range, dst: ref Layobject.Stack, index: int)
{
# we don't bother animating movement within a stack; maybe later?
if (src == dst) {
transfercards(src, r, dst, index);
return;
}
completeanim(src);
if (!src.visible) {
# cards being transferred out of private area should
# have already been created, but check anyway.
if (r.start != 0)
panic("bad transfer out of private");
for (i := 0; i < r.end; i++)
if (src.cards[i].id < 0)
panic("cannot transfer fake card");
}
startanimating(newanimation(src, r), dst, index);
}
objneedsrepack(obj: ref Layobject)
{
if (!obj.needrepack) {
obj.needrepack = 1;
repackobjs = obj :: repackobjs;
}
}
repackobj(obj: ref Layobject)
{
pick o := obj {
Stack =>
cards := o.cards;
pos := o.pos;
delta := o.delta;
for (i := 0; i < len cards; i++) {
p := pos.add(delta.mul(i));
id := string cards[i].id;
cmd(win, ".c coords i" + id + " " + p2s(p));
cmd(win, ".c raise i" + id); # XXX could be more efficient.
cmd(win, ".c lower s" + string o.id + "." + string i + " i" + id);
}
changesel(o, o.sel);
showsize(o);
}
obj.needrepack = 0;
}
cardrect(stack: ref Layobject.Stack, r: Range): Rect
{
if (r.start == r.end)
return ((-10, -10), (-10, -10));
cr := Rect((0, 0), cardsize).addpt(stack.pos);
delta := stack.delta;
return union(cr.addpt(delta.mul(r.start)), cr.addpt(delta.mul(r.end - 1)));
}
repackall()
{
sys->print("repackall()\n");
needrepack = 0;
if (layout == nil) {
sys->print("no layout\n");
return;
}
if (packwin == nil) {
# use an unmapped tk window to do our packing arrangements
packwin = tk->toplevel(drawctxt.display, "-bd 0");
packwin.wreq = nil; # stop window requests piling up.
}
cmd(packwin, "destroy " + cmd(packwin, "pack slaves ."));
packobjs = nil;
packit(layout, ".0");
sys->print("%d packobjs\n", len packobjs);
needresize = 1;
}
# make the frames for the objects to be laid out, in the
# offscreen window.
packit(lay: ref Layout, f: string)
{
cmd(packwin, "frame " + f);
cmd(packwin, "pack " + f + " " + lay.opts);
pick l := lay {
Frame =>
for (i := 0; i < len l.lays; i++)
packit(l.lays[i], f + "." + string i);
Obj =>
if ((obj := findlayobject(l.layid)) != nil) {
obj.w = f;
obj.orientation = l.orientation;
packobjs = obj :: packobjs;
} else
sys->print("cannot find layobject %d\n", l.layid);
}
}
sizetofit()
{
if (packobjs == nil)
return;
cmd(packwin, "pack propagate . 1");
cmd(packwin, ". configure -width 0 -height 0"); # make sure propagation works.
csz := actsize(packwin, ".");
cmd(win, "bind . <Configure> {}");
cmd(win, "pack propagate . 1");
cmd(win, ". configure -width 0 -height 0");
cmd(win, ".c configure -width " + string csz.x + " -height " + string csz.y
+ " -scrollregion {0 0 " + p2s(csz) + "}");
winr := actrect(win, ".");
screenr := win.image.screen.image.r;
if (!winr.inrect(screenr)) {
if (winr.dx() > screenr.dx())
(winr.min.x, winr.max.x) = (screenr.min.x, screenr.max.x);
if (winr.dy() > screenr.dy())
(winr.min.y, winr.max.y) = (screenr.min.y, screenr.max.y);
if (winr.max.x > screenr.max.x)
(winr.min.x, winr.max.x) = (screenr.max.x - winr.dx(), screenr.max.x);
if (winr.max.y > screenr.max.y)
(winr.min.y, winr.max.y) = (screenr.max.y - winr.dy(), screenr.max.y);
}
cmd(win, "pack propagate . 0");
cmd(win, ". configure " +
" -x " + string winr.min.x +
" -y " + string winr.min.y +
" -width " + string winr.dx() +
" -height " + string winr.dy());
needresize = 1;
updatearena();
cmd(win, "bind . <Configure> {send cmd config}");
}
setorigin(r: Rect, p: Point): Rect
{
sz := Point(r.max.x - r.min.x, r.max.y - r.min.y);
return (p, p.add(sz));
}
resizeall()
{
needresize = 0;
if (packobjs == nil)
return;
cmd(packwin, "pack propagate . 1");
cmd(packwin, ". configure -width 0 -height 0"); # make sure propagation works.
for (sl := packobjs; sl != nil; sl = tl sl) {
obj := hd sl;
sizeobj(obj);
cmd(packwin, obj.w + " configure -width " + string obj.size.x +
" -height " + string obj.size.y);
}
csz := actsize(packwin, ".");
sz := actsize(win, ".cf");
if (sz.x > csz.x || sz.y > csz.y) {
cmd(packwin, "pack propagate . 0");
if (sz.x > csz.x) {
cmd(packwin, ". configure -width " + string sz.x);
cmd(win, ".c xview moveto 0");
csz.x = sz.x;
}
if (sz.y > csz.y) {
cmd(packwin, ". configure -height " + string sz.y);
cmd(win, ".c yview moveto 0");
csz.y = sz.y;
}
}
cmd(win, ".c configure -width " + string csz.x + " -height " + string csz.y
+ " -scrollregion {0 0 " + p2s(csz) + "}");
onscreen();
for (sl = packobjs; sl != nil; sl = tl sl) {
obj := hd sl;
r := actrect(packwin, obj.w);
positionobj(obj, r);
}
}
# make sure that there aren't any unnecessary blank
# bits in the scroll area.
onscreen()
{
(n, toks) := sys->tokenize(cmd(win, ".c xview"), " ");
cmd(win, ".c xview moveto " + hd toks);
(n, toks) = sys->tokenize(cmd(win, ".c yview"), " ");
cmd(win, ".c yview moveto " + hd toks);
}
# work out the size of an object to be laid out.
sizeobj(obj: ref Layobject)
{
pick o := obj {
Stack =>
delta := Point(0, 0);
case o.style {
styDISPLAY =>
case o.orientation {
oRIGHT => delta.x = carddelta.x;
oLEFT => delta.x = -carddelta.x;
oDOWN => delta.y = carddelta.y;
oUP => delta.y = -carddelta.y;
}
styPILE =>
; # no offset
}
o.delta = delta;
r := Rect((0, 0), size(cardrect(o, (0, max(len o.cards, o.maxcards)))));
if (o.title != nil) {
p := Point(r.min.x + r.dx() / 2, r.min.y);
tr := s2r(cmd(win, ".c bbox t" + string o.id));
tbox := Rect((p.x - tr.dx() / 2, p.y - tr.dy()), (p.x + tr.dx() / 2, p.y));
r = union(r, tbox);
}
o.size = r.max.sub(r.min).add((Border * 2, Border * 2));
# sys->print("sized stack %d => %s\n", o.id, p2s(o.size));
Widget =>
w := ".buts." + string o.id;
o.size.x = int cmd(win, w + " cget -width");
o.size.y = int cmd(win, w + " cget -height");
# sys->print("sized widget %d (%s) => %s\n", o.id,
# cmd(win, "winfo class " + w + ".b"), p2s(o.size));
}
}
# set a laid-out object's position on the canvas, given
# its allocated rectangle, r.
positionobj(obj: ref Layobject, r: Rect)
{
pick o := obj {
Stack =>
# sys->print("positioning stack %d, r %s\n", o.id, r2s(r));
delta := o.delta;
sz := o.size.sub((Border * 2, Border * 2));
r.min.x += (r.dx() - sz.x) / 2;
r.min.y += (r.dy() - sz.y) / 2;
r.max = r.min.add(sz);
if (o.title != nil) {
cmd(win, ".c coords t" +string o.id + " " +
string (r.min.x + r.dx() / 2) + " " + string r.min.y);
tr := s2r(cmd(win, ".c bbox t" + string o.id));
r.min.y = tr.max.y;
sz = size(cardrect(o, (0, max(len o.cards, o.maxcards))));
r.min.x += (r.dx() - sz.x) / 2;
r.min.y += (r.dy() - sz.y) / 2;
r.max = r.min.add(sz);
}
o.pos = r.min;
if (delta.x < 0)
o.pos.x = r.max.x - cardsize.x;
if (delta.y < 0)
o.pos.y = r.max.y - cardsize.y;
cmd(win, ".c coords r" + string o.id + " " + r2s(r.inset(-(Border / 2))));
objneedsrepack(o);
Widget =>
# sys->print("positioning widget %d, r %s\n", o.id, r2s(r));
cmd(win, ".c coords r" + string o.id + " " + p2s(r.min));
bd := int cmd(win, ".buts." + string o.id + " cget -bd");
cmd(win, ".c itemconfigure r" + string o.id +
" -width " + string (r.dx() - bd * 2) +
" -height " + string (r.dy() - bd * 2));
}
}
size(r: Rect): Point
{
return r.max.sub(r.min);
}
transfercards(src: ref Layobject.Stack, r: Range, dst: ref Layobject.Stack, index: int)
{
cards := extractcards(src, r);
n := r.end - r.start;
# if we've just removed some cards from the destination,
# then adjust the destination index accordingly.
if (src == dst && index > r.start) {
if (index < r.end)
index = r.start;
else
index -= n;
}
insertcards(dst, cards, index);
}
extractcards(src: ref Layobject.Stack, r: Range): array of ref Object.Card
{
if (len src.cards > src.maxcards)
needresize = 1;
deltag(src.cards[r.start:r.end], "c" + string src.id);
n := r.end - r.start;
cards := src.cards[r.start:r.end];
newcards := array[len src.cards - n] of ref Object.Card;
newcards[0:] = src.cards[0:r.start];
newcards[r.start:] = src.cards[r.end:];
src.cards = newcards;
objneedsrepack(src); # XXX not necessary if moving from top?
return cards;
}
insertcards(dst: ref Layobject.Stack, cards: array of ref Object.Card, index: int)
{
n := len cards;
newcards := array[len dst.cards + n] of ref Object.Card;
newcards[0:] = dst.cards[0:index];
newcards[index + n:] = dst.cards[index:];
newcards[index:] = cards;
dst.cards = newcards;
for (i := 0; i < len cards; i++)
cards[i].parentid = dst.id;
addtag(dst.cards[index:index + n], "c" + string dst.id);
objneedsrepack(dst); # XXX not necessary if adding to top?
if (len dst.cards > dst.maxcards)
needresize = 1;
}
destroy(obj: ref Object)
{
if (obj.id >= 0)
objects[obj.id] = nil;
id := string obj.id;
pick o := obj {
Card =>
cmd(win, ".c delete i" + id); # XXX crashed here once...
Widget =>
cmd(win, ".c delete r" + id);
w := ".buts." + id;
cmd(win, "destroy " + w);
dellayobject(o.o);
Stack =>
completeanim(o.o);
cmd(win, ".c delete r" + id + " s" + id + " n" + id + " N" + id);
if (o.o.title != nil)
cmd(win, ".c delete t" + id);
cmd(win, ".c delete c" + id); # any remaining "fake" cards
needrepack = 1;
dellayobject(o.o);
Button =>
cmd(win, "destroy .buts." + string o.id);
Member =>
if (o.cid != -1) {
# XXX remove member from members hash.
}
Layoutobj =>
if ((l := findlayobject(o.lay.layid)) != nil) {
# XXX are we sure they're not off-screen anyway?
cmd(win, ".c move r" + string l.id + " 5000 5000");
cmd(win, ".c move c" + string l.id + " 5000 5000");
cmd(win, ".c move N" + string l.id + " 5000 5000");
cmd(win, ".c move n" + string l.id + " 5000 5000");
cmd(win, ".c move s" + string l.id + " 5000 5000");
}
if (layout == o.lay)
layout = nil;
Layoutframe =>
if (layout == o.lay)
layout = nil;
}
}
dellayobject(lay: ref Layobject)
{
if (lay.layid == -1)
return;
x := lay.layid % len layobjects;
nl: list of ref Layobject;
for (ll := layobjects[x]; ll != nil; ll = tl ll)
if ((hd ll).layid != lay.layid)
nl = hd ll :: nl;
layobjects[x] = nl;
}
findlayobject(layid: int): ref Layobject
{
if (layid == -1)
return nil;
for (ll := layobjects[layid % len layobjects]; ll != nil; ll = tl ll)
if ((hd ll).layid == layid)
return hd ll;
return nil;
}
deltag(cards: array of ref Object.Card, tag: string)
{
for (i := 0; i < len cards; i++)
cmd(win, ".c dtag i" + string cards[i].id + " " + tag);
}
addtag(cards: array of ref Object.Card, tag: string)
{
for (i := 0; i < len cards; i++)
cmd(win, ".c addtag " + tag + " withtag i" + string cards[i].id);
}
join(v: list of string): string
{
if (v == nil)
return nil;
s := hd v;
for (v = tl v; v != nil; v = tl v)
s += " " + hd v;
return s;
}
notify(s: string)
{
notifych <-= s;
}
notifierproc()
{
notifypid := -1;
sync := chan of int;
for (;;) {
s := <-notifych;
kill(notifypid);
spawn notifyproc(s, sync);
notifypid = <-sync;
}
}
notifyproc(s: string, sync: chan of int)
{
sync <-= sys->pctl(0, nil);
cmd(win, ".c delete notify");
id := cmd(win, ".c create text " + p2s(visibleorigin()) + " -anchor nw -fill red -tags notify -text '" + s);
bbox := cmd(win, ".c bbox " + id);
cmd(win, ".c create rectangle " + bbox + " -fill #ffffaa -tags notify");
cmd(win, ".c raise " + id);
cmd(win, "update");
sys->sleep(1500);
cmd(win, ".c delete notify");
cmd(win, "update");
}
# move canvas so that canvas point canvp lies under
# screen point scrp.
pan(canvp, scrp: Point)
{
o := Point(int cmd(win, ".c cget -actx"), int cmd(win, ".c cget -acty"));
co := canvp.sub(scrp.sub(o));
sz := Point(int cmd(win, ".c cget -width"), int cmd(win, ".c cget -height"));
cmd(win, ".c xview moveto " + string (real co.x / real sz.x));
cmd(win, ".c yview moveto " + string (real co.y / real sz.y));
}
# return the top left point that's currently visible
# in the canvas, taking into account scrolling.
visibleorigin(): Point
{
(scrx, scry) := (cmd(win, ".c cget -actx"), cmd(win, ".c cget -acty"));
return Point (int cmd(win, ".c canvasx " + scrx),
int cmd(win, ".c canvasy " + scry));
}
s2r(s: string): Rect
{
r: Rect;
(n, toks) := sys->tokenize(s, " ");
if (n < 4)
panic("malformed rectangle " + s);
(r.min.x, toks) = (int hd toks, tl toks);
(r.min.y, toks) = (int hd toks, tl toks);
(r.max.x, toks) = (int hd toks, tl toks);
(r.max.y, toks) = (int hd toks, tl toks);
return r;
}
r2s(r: Rect): string
{
return sys->sprint("%d %d %d %d", r.min.x, r.min.y, r.max.x, r.max.y);
}
p2s(p: Point): string
{
return string p.x + " " + string p.y;
}
union(r1, r2: Rect): Rect
{
if (r1.min.x > r2.min.x)
r1.min.x = r2.min.x;
if (r1.min.y > r2.min.y)
r1.min.y = r2.min.y;
if (r1.max.x < r2.max.x)
r1.max.x = r2.max.x;
if (r1.max.y < r2.max.y)
r1.max.y = r2.max.y;
return r1;
}
kill(pid: int)
{
if ((fd := sys->open("/prog/"+string pid+"/ctl", Sys->OWRITE)) != nil)
sys->write(fd, array of byte "kill", 4);
}
lockproc()
{
for (;;) {
<-cardlockch;
cardlockch <-=1;
}
}
lock()
{
cardlockch <-= 1;
}
unlock()
{
<-cardlockch;
}
openimage(file: string, id: string): Point
{
if (tk->cmd(win, "image create bitmap " + id + " -file " + file)[0] == '!')
return (0, 0);
return (int tk->cmd(win, "image width " + id),
int tk->cmd(win, "image height " + id));
}
# read images into tk.
readimages(dir: string, prefix: string): (int, Point)
{
displ := drawctxt.display;
if (cardsize.x > 0 && cardsize.y > 0 &&
(img := displ.open(dir + "/" + prefix + ".all.bit")) != nil) {
if (img.r.dx() % cardsize.x != 0 || img.r.dy() != cardsize.y)
sys->fprint(stderr, "cards: inconsistent complete image, ignoring\n");
else {
n := img.r.dx() / cardsize.x;
x := img.r.min.x;
sys->print("found %d cards in complete image\n", n);
for (i := 0; i < n; i++) {
c := displ.newimage(((0, 0), cardsize), img.chans, 0, 0);
c.draw(c.r, img, nil, (x, 0));
id := prefix + string i;
cmd(win, "image create bitmap " + id);
tk->putimage(win, id, c, nil);
x += cardsize.x;
}
return (n, cardsize);
}
}
size := openimage("@" + dir + "/" + prefix + "0.bit", prefix + "0");
if (size.x == 0) {
sys->print("no first image (filename: '%s')\n", dir + "/" + prefix + "0.bit");
return (0, (0, 0));
}
i := 1;
for (;;) {
nsize := openimage("@" + dir + "/" + prefix + string i + ".bit", prefix + string i);
if (nsize.x == 0)
break;
if (!nsize.eq(size))
sys->fprint(stderr, "warning: inconsistent image size in %s/%s%d.bit, " +
"[%d %d] vs [%d %d]\n", dir, prefix, i, size.x, size.y, nsize.x, nsize.y);
i++;
}
return (i, size);
}
newanimation(src: ref Layobject.Stack, r: Range): ref Animation
{
a := ref Animation;
a.srcpt = src.pos.add(src.delta.mul(r.start));
cards := extractcards(src, r);
a.cards = cards;
a.waitch = chan of ref Animation;
return a;
}
startanimating(a: ref Animation, dst: ref Layobject.Stack, index: int)
{
q := dst.animq;
if (q.isempty())
spawn animqueueproc(a.waitch);
a.tag = "a" + string animid++;
addtag(a.cards, a.tag);
q.put(a);
a.dstid = dst.id;
a.index = index;
spawn animproc(a);
}
SPEED: con 1.5; # animation speed in pixels/millisec
animproc(a: ref Animation)
{
tick := chan of int;
dst := stackobj(a.dstid);
if (dst == nil)
panic("animation destination has gone!");
dstpt := dst.pos.add(dst.delta.mul(a.index));
srcpt := a.srcpt;
d := dstpt.sub(srcpt);
# don't bother animating if moving to or from a hidden stack.
if (!srcpt.eq(Hiddenpos) && !dst.pos.eq(Hiddenpos) && !d.eq((0, 0))) {
mag := math->sqrt(real(d.x * d.x + d.y * d.y));
(vx, vy) := (real d.x / mag, real d.y / mag);
currpt := a.srcpt; # current position of cards
t0 := starttime;
dt := int (mag / SPEED);
t := 0;
tickregister(tick);
cmd(win, ".c raise " + a.tag);
while (t < dt) {
s := real t * SPEED;
p := Point(srcpt.x + int (s * vx), srcpt.y + int (s * vy));
dp := p.sub(currpt);
cmd(win, ".c move " + a.tag + " " + string dp.x + " " + string dp.y);
currpt = p;
t = <-tick - t0;
}
tickunregister(tick);
cmd(win, "update");
}
a.waitch <-= a;
}
tickregister(tick: chan of int)
{
tickregisterch <-= tick;
}
tickunregister(tick: chan of int)
{
tickunregisterch <-= tick;
}
tickproc(tick: chan of int)
{
for (;;)
tick <-= 1;
}
timeproc()
{
reg: list of chan of int;
dummytick := chan of int;
realtick := chan of int;
tick := dummytick;
spawn tickproc(realtick);
for (;;) {
alt {
c := <-tickregisterch =>
if (reg == nil)
tick = realtick;
reg = c :: reg;
c := <-tickunregisterch =>
r: list of chan of int;
for (; reg != nil; reg = tl reg)
if (hd reg != c)
r = hd reg :: r;
reg = r;
if (reg == nil)
tick = dummytick;
<-tick =>
t := sys->millisec();
for (r := reg; r != nil; r = tl r) {
alt {
hd r <-= t =>
;
* =>
;
}
}
cmd(win, "update");
}
}
}
yield()
{
yieldch <-= 1;
}
yieldproc()
{
for (;;)
<-yieldch;
}
# send completed animations down animfinishedch;
# wait for a reply, which is either a new animation to wait
# for (the next in the queue) or nil, telling us to exit
animqueueproc(waitch: chan of ref Animation)
{
rc := chan of chan of ref Animation;
while (waitch != nil) {
animfinishedch <-= (<-waitch, rc);
waitch = <-rc;
}
}
# an animation has finished.
# move the cards into their final place in the stack,
# remove the animation from the queue it's on,
# and inform the mediating process of the next animation process in the queue.
animterminated(v: (ref Animation, chan of chan of ref Animation))
{
(a, rc) := v;
deltag(a.cards, a.tag);
dst := stackobj(a.dstid);
insertcards(dst, a.cards, a.index);
repackobj(dst);
cmd(win, "update");
q := dst.animq;
q.get();
if (q.isempty())
rc <-= nil;
else {
a = q.peek();
rc <-= a.waitch;
}
}
actrect(win: ref Tk->Toplevel, w: string): Rect
{
r: Rect;
r.min.x = int cmd(win, w + " cget -actx") + int cmd(win, w + " cget -bd");
r.min.y = int cmd(win, w + " cget -acty") + int cmd(win, w + " cget -bd");
r.max.x = r.min.x + int cmd(win, w + " cget -actwidth");
r.max.y = r.min.y + int cmd(win, w + " cget -actheight");
return r;
}
actsize(win: ref Tk->Toplevel, w: string): Point
{
return (int cmd(win, w + " cget -actwidth"), int cmd(win, w + " cget -actheight"));
}
Queue.put(q: self ref Queue, s: T)
{
q.t = s :: q.t;
}
Queue.get(q: self ref Queue): T
{
s: T;
if(q.h == nil){
q.h = revlist(q.t);
q.t = nil;
}
if(q.h != nil){
s = hd q.h;
q.h = tl q.h;
}
return s;
}
Queue.peek(q: self ref Queue): T
{
s: T;
if (q.isempty())
return s;
s = q.get();
q.h = s :: q.h;
return s;
}
Queue.isempty(q: self ref Queue): int
{
return q.h == nil && q.t == nil;
}
revlist(ls: list of T) : list of T
{
rs: list of T;
for (; ls != nil; ls = tl ls)
rs = hd ls :: rs;
return rs;
}
readconfig(): int
{
for (lines := readconfigfile("/icons/cards/config"); lines != nil; lines = tl lines) {
t := hd lines;
case hd t {
"rearborder" =>
Rearborder = int hd tl t;
"border" =>
Border = int hd tl t;
"selectborder" =>
Selectborder = int hd tl t;
"xdelta" =>
carddelta.x = int hd tl t;
"ydelta" =>
carddelta.y = int hd tl t;
"font" =>
Textfont = hd tl t;
"selectcolour" =>
Selectcolour = hd tl t;
"cardsize" =>
if (len t != 3)
sys->fprint(stderr, "cards: invalid value for cardsize attribute\n");
else
cardsize = (int hd tl t, int hd tl tl t);
* =>
sys->fprint(stderr, "cards: unknown config attribute: %s\n", hd t);
}
}
return 0;
}
readcardimages(): int
{
(nimages, cardsize) = readimages("/icons/cards", "c");
if (nimages == 0) {
sys->fprint(stderr, "cards: no card images found\n");
return -1;
}
sys->print("%d card images found\n", nimages);
(nrears, rearsize) := readimages("/icons/cardrears", "rear");
if (nrears > 0 && !rearsize.eq(cardsize)) {
sys->fprint(stderr, "cards: card rear sizes don't match card sizes (%s vs %s)\n", p2s(rearsize), p2s(cardsize));
return -1;
}
sys->print("%d card rear images found\n", nrears);
cr := Rect((0, 0), cardsize);
for (i := nrears; i < len rearcolours; i++) {
cmd(win, "image create bitmap rear" + string i);
img := drawctxt.display.newimage(cr, Draw->XRGB32, 0, Draw->Black);
img.draw(cr.inset(Rearborder),
drawctxt.display.color(rearcolours[i] - nrears), nil, (0, 0));
tk->putimage(win, "rear" + string i, img, nil);
}
return 0;
}
readconfigfile(f: string): list of list of string
{
sys->print("opening config file '%s'\n", f);
fd := sys->open(f, Sys->OREAD);
if (fd == nil)
return nil;
buf := array[Sys->ATOMICIO] of byte;
nb := sys->read(fd, buf, len buf);
if (nb <= 0)
return nil;
(nil, lines) := sys->tokenize(string buf[0:nb], "\r\n");
r: list of list of string;
for (; lines != nil; lines = tl lines) {
(n, toks) := sys->tokenize(hd lines, " \t");
if (n == 0)
continue;
if (n < 2)
sys->fprint(stderr, "cards: invalid config line: %s\n", hd lines);
else
r = toks :: r;
}
return r;
}
fittoscreen(win: ref Tk->Toplevel)
{
Point: import draw;
if (win.image == nil || win.image.screen == nil)
return;
r := win.image.screen.image.r;
scrsize := Point((r.max.x - r.min.x), (r.max.y - r.min.y));
bd := int cmd(win, ". cget -bd");
winsize := Point(int cmd(win, ". cget -actwidth") + bd * 2, int cmd(win, ". cget -actheight") + bd * 2);
if (winsize.x > scrsize.x)
cmd(win, ". configure -width " + string (scrsize.x - bd * 2));
if (winsize.y > scrsize.y)
cmd(win, ". configure -height " + string (scrsize.y - bd * 2));
actr: Rect;
actr.min = Point(int cmd(win, ". cget -actx"), int cmd(win, ". cget -acty"));
actr.max = actr.min.add((int cmd(win, ". cget -actwidth") + bd*2,
int cmd(win, ". cget -actheight") + bd*2));
(dx, dy) := (actr.dx(), actr.dy());
if (actr.max.x > r.max.x)
(actr.min.x, actr.max.x) = (r.min.x - dx, r.max.x - dx);
if (actr.max.y > r.max.y)
(actr.min.y, actr.max.y) = (r.min.y - dy, r.max.y - dy);
if (actr.min.x < r.min.x)
(actr.min.x, actr.max.x) = (r.min.x, r.min.x + dx);
if (actr.min.y < r.min.y)
(actr.min.y, actr.max.y) = (r.min.y, r.min.y + dy);
cmd(win, ". configure -x " + string actr.min.x + " -y " + string actr.min.y);
}
panic(s: string)
{
sys->fprint(stderr, "cards: panic: %s\n", s);
raise "panic";
}
showtk := 0;
cmd(top: ref Tk->Toplevel, s: string): string
{
if (showtk)
sys->print("tk: %s\n", s);
e := tk->cmd(top, s);
if (e != nil && e[0] == '!') {
sys->fprint(stderr, "tk error %s on '%s'\n", e, s);
raise "panic";
}
return e;
}
max(a, b: int): int
{
if (a > b)
return a;
return b;
}