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implement WmMpeg;
include "sys.m";
sys: Sys;
include "draw.m";
draw: Draw;
Rect, Display, Image: import draw;
ctxt: ref Draw->Context;
include "tk.m";
tk: Tk;
Toplevel: import tk;
include "tkclient.m";
tkclient: Tkclient;
include "mpeg.m";
mpeg: Mpeg;
WmMpeg: module
{
init: fn(ctxt: ref Draw->Context, argv: list of string);
};
Stopped, Playing: con iota;
dx, dy: int;
dw, dh: int;
adjust: int;
task_cfg := array[] of {
"canvas .c -background =5",
"frame .b",
"button .b.File -text File -command {send cmd file}",
"button .b.Stop -text Stop -command {send cmd stop}",
"button .b.Pause -text Pause -command {send cmd pause}",
"button .b.Play -text Play -command {send cmd play}",
"button .b.Picture -text Picture -command {send cmd pict}",
"frame .f",
"label .f.file -text {File:}",
"label .f.name",
"pack .f.file .f.name -side left",
"pack .b.File .b.Stop .b.Pause .b.Play .b.Picture -side left",
"pack .f -fill x",
"pack .b -anchor w",
"pack .c -side bottom -fill both -expand 1",
"pack propagate . 0",
};
init(xctxt: ref Draw->Context, nil: list of string)
{
sys = load Sys Sys->PATH;
draw = load Draw Draw->PATH;
tk = load Tk Tk->PATH;
tkclient = load Tkclient Tkclient->PATH;
mpeg = load Mpeg Mpeg->PATH;
ctxt = xctxt;
tkclient->init();
(t, menubut) := tkclient->toplevel(ctxt.screen, "", "Mpeg Player", Tkclient->Appl);
cmd := chan of string;
tk->namechan(t, cmd, "cmd");
tkclient->tkcmds(t, task_cfg);
tk->cmd(t, "bind . <Configure> {send cmd resize}");
tk->cmd(t, "update");
fname := "";
ctl := chan of string;
state := Stopped;
for(;;) alt {
menu := <-menubut =>
if(menu == "exit") {
if(state == Playing) {
mpeg->ctl("stop");
<-ctl;
}
return;
}
tkclient->wmctl(t, menu);
press := <-cmd =>
case press {
"file" =>
pat := list of {
"*.mpg (MPEG movie file)"
};
fname = tkclient->filename(ctxt.screen, t, "Locate MPEG clip", pat, "");
if(fname != nil) {
tk->cmd(t, ".f.name configure -text {"+fname+"}");
tk->cmd(t, "update");
}
"play" =>
s := mpeg->play(ctxt.display, nil, 0, canvsize(t), fname, ctl);
if(s != nil) {
tkclient->dialog(t, "error -fg red", "Play MPEG",
"Media player error:\n"+s,
0, "Stop Play"::nil);
break;
}
state = Playing;
"resize" =>
if(state != Playing)
break;
r := canvsize(t);
s := sys->sprint("window %d %d %d %d",
r.min.x, r.min.y, r.max.x, r.max.y);
mpeg->ctl(s);
"pict" =>
if(adjust)
break;
adjust = 1;
spawn pict(t);
* =>
# Stop & Pause
mpeg->ctl(press);
}
done := <-ctl =>
state = Stopped;
}
}
canvsize(t: ref Toplevel): Rect
{
r: Rect;
r.min.x = int tk->cmd(t, ".c cget -actx") + dx;
r.min.y = int tk->cmd(t, ".c cget -acty") + dy;
r.max.x = r.min.x + int tk->cmd(t, ".c cget -width") + dw;
r.max.y = r.min.y + int tk->cmd(t, ".c cget -height") + dh;
return r;
}
pict_cfg := array[] of {
"scale .dx -orient horizontal -from -5 -to 5 -label {Origin X}"+
" -command { send c dx}",
"scale .dy -orient horizontal -from -5 -to 5 -label {Origin Y}"+
" -command { send c dy}",
"scale .dw -orient horizontal -from -5 -to 5 -label {Width}"+
" -command {send c dw}",
"scale .dh -orient horizontal -from -5 -to 5 -label {Height}"+
" -command {send c dh}",
"pack .Wm_t -fill x",
"pack .dx .dy .dw .dh -fill x",
"pack propagate . 0",
"update",
};
pict(parent: ref Toplevel)
{
targ := +" -borderwidth 2 -relief raised";
(t, menubut) := tkclient->toplevel(ctxt.screen, tkclient->geom(parent), "Mpeg Picture", 0);
pchan := chan of string;
tk->namechan(t, pchan, "c");
tkclient->tkcmds(t, pict_cfg);
for(;;) alt {
menu := <-menubut =>
if(menu == "exit") {
adjust = 0;
return;
}
tkclient->wmctl(t, menu);
tcip := <-pchan =>
case tcip {
"dx" => dx = int tk->cmd(t, ".dx get");
"dy" => dy = int tk->cmd(t, ".dy get");
"dw" => dw = int tk->cmd(t, ".dw get");
"dh" => dh = int tk->cmd(t, ".dh get");
}
r := canvsize(parent);
s := sys->sprint("window %d %d %d %d",
r.min.x, r.min.y, r.max.x, r.max.y);
mpeg->ctl(s);
}
}
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