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############################################################################
#
# File: vpane.icn
#
# Subject: Procedures for vidget panes
#
# Author: Jon Lipp
#
# Date: March 23, 1995
#
############################################################################
#
# This file is in the public domain.
#
############################################################################
#
# Vidgets defined in this file:
# Vpane
#
############################################################################
#
# Links: vidgets
#
############################################################################
link vidgets
############################################################################
# pane - a simple region on the window
############################################################################
record Vpane_rec(win, callback, id, style, aw, ah, ax, ay,
uw, uh, ux, uy, uid, P, V)
procedure Vpane(params[])
local self, frame, x, y, ins
static procs
initial procs := Vstd(event_Vpane, draw_Vpane, outline_Vpane,
resize_Vpane, inrange_Vpane, init_Vpane,
couplerset_Vpane)
if ins := Vinsert_check(params) then {
frame := pop(params); x := pop(params); y:= pop(params)
}
self := Vpane_rec ! params[1:7|0]
Vwin_check(self.win, "Vpane()")
if (\self.aw, not numeric(self.aw) ) then
_Vbomb("invalid aw parameter to Vpane()")
if (\self.ah, not numeric(self.ah) ) then
_Vbomb("invalid ah parameter to Vpane()")
/self.style := "invisible"
if integer(self.style) then
if self.style > 0 then
self.style := "grooved"
else
self.style := "invisible"
self.uid := Vget_uid()
self.V := procs
self.P := Vstd_pos()
if \ins then VInsert(frame, self, x, y)
return self
end
#
# check if (x, y) lie within the bounds of a vidget.
#
procedure inrange_Vpane(self, x, y)
if (/self.ax | /self.ay | /self.aw | /self.ah) then
_Vbomb("VResize() not invoked on this vidget")
return self.ax <= \x < self.ax + self.aw & self.ay <= \y < self.ay + self.ah
end
#
# Set the absolute position and size fields of a vidget.
#
procedure resize_Vidget(self, x, y, w, h)
self.ax := \x
self.ay := \y
self.aw := \w
self.ah := \h
end
#
# Set the absolute position and size fields of a Pane vidget.
#
procedure resize_Vpane(self, x, y, w, h)
local border
resize_Vidget(self, x, y, w, h)
if self.style == "invisible" then
border := 0
else
border := 2
self.ux := self.ax + border
self.uy := self.ay + border
self.uw := self.aw - 2 * border
self.uh := self.ah - 2 * border
end
#
# Draw the outline of an arbitrary vidget
#
procedure outline_Vidget(self)
GrooveRectangle(self.win, self.ax, self.ay, self.aw, self.ah)
end
#
# Draw the outline of a Vpane vidget
#
procedure outline_Vpane(self)
case self.style of {
"sunken": BevelRectangle(self.win, self.ax, self.ay, self.aw, self.ah,-2)
"grooved": GrooveRectangle(self.win, self.ax, self.ay, self.aw, self.ah)
"raised": BevelRectangle(self.win, self.ax, self.ay, self.aw, self.ah)
}
end
# At the very least, tell a Vpane to outline itself.
#
procedure draw_Vpane(self)
self.V.outline(self)
end
#
# If the Vpane has a callback, call (or set) it; otherwise, reject the event.
#
procedure event_Vpane(self, e, x, y)
local cb
static type
initial type := proc("type", 0) # protect attractive name
cb := self.callback
/x := &x
/y := &y
if type(\cb) == "procedure" then # procedure
return cb(self, e, x, y) | &null
if find("coupler",type(\cb)) then { # coupler
if \self.callback.locked then fail
return cb.V.set(cb, self) | &null
}
fail # reject
end
#
# If the vidget with this procedure as its couplerset is notified by
# a coupler, nothing will happen.
#
procedure couplerset_Vpane(self)
end
#
# Release the resources associated with the binding on a window.
#
procedure destruct_Vpane(self)
Uncouple(self.win)
end
#
# No init for Vpane.
#
procedure init_Vpane(self)
end
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