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############################################################################
#
# vibbttn.icn -- procedures for defining a button object
#
############################################################################
#
# This file is in the public domain.
#
############################################################################
$include "vibdefn.icn"
##########################################################################
# button_obj:
# v : vidget used for drawing text input object
# proc : name of user callback procedure
# id : unique means of identifying instance
# x,y,w,h : bounding box
# label : button label
# style : button style
# toggle : is this a toggle button?
# dflt : is this button the default in a dialog box?
# focus : should focus lines be drawn around this object?
##########################################################################
record button_obj(v, proc, id, x, y, w, h,
label, style, toggle, dflt, focus)
##########################################################################
# create_button() creates a button instance and draws the button if
# it is a first class object.
##########################################################################
procedure create_button(x, y, w, h, label, style, toggle, dflt)
local r, id
id := next_id("button")
/style := DEFAULT_BUTTON_STYLE
r := button_obj(, "button_cb" || id, "button" || id,
x, y, w, h, label, style, toggle, dflt, 0)
r.v := Vbutton(ROOT, x, y, APPWIN, label, , id, style, w, h)
VRemove(ROOT, r.v, 1)
return r
end
##########################################################################
# draw_button() draws the given button in that button's style.
##########################################################################
procedure draw_button(r)
VResize(r.v, r.x, r.y, r.w, r.h)
VDraw(r.v)
if \r.dflt then
BevelRectangle(APPWIN, r.x - 4, r.y - 4, r.w + 8, r.h + 8, -2)
return r
end
##########################################################################
# update_button_bb() updates various attributes of the button that
# change when the button is resized, etc.
##########################################################################
procedure update_button_bb(r)
local tempy, temph, vpad, hpad, sp, sz
vpad := 4 # vertical padding
hpad := 7 # horizontal padding
sp := 11 # space between circle/box and text
r.w <:= MIN_W
r.h <:= MIN_H
case r.style of {
"check" | "circle" | "checkno" | "circleno": {
sz := integer(WAttrib(APPWIN, "fheight") * 0.75)
r.w <:= sz + sp + TextWidth(APPWIN, r.label) + hpad
r.h <:= WAttrib(APPWIN, "fheight") + vpad
}
"regular" | "regularno": {
r.w <:= TextWidth(APPWIN, r.label) + hpad
r.h <:= WAttrib(APPWIN, "fheight") + vpad
}
"xbox" | "xboxno": {
r.w <:= r.h
r.h <:= r.w
r.label := &null
}
}
end
##########################################################################
# load_button() restores a button object from session code.
##########################################################################
procedure load_button(r, o)
r.label := o.lbl
r.style := o.sty
case o.num of {
"1": r.toggle := 1
"-1": r.dflt := 1
}
r.v := Vbutton(ROOT, r.x, r.y, APPWIN, r.label, , r.id, r.style, r.w, r.h)
VRemove(ROOT, r.v, 1)
end
##########################################################################
# load_xbox() makes an xbox button object from an old checkbox entry.
##########################################################################
procedure load_xbox(r, o)
r.label := ""
r.style := "xbox"
r.toggle := 1
end
##########################################################################
# save_button() augments the record for saving a button object.
##########################################################################
procedure save_button(r, o)
r.typ := "Button"
r.lbl := o.label
r.sty := o.style
if \o.dflt then
r.num := -1
else
r.num := o.toggle
return
end
##########################################################################
# display_button_atts() displays the attribute sheet with the current
# attributes for the given button instance.
##########################################################################
procedure display_button_atts(object)
local s, o, t, d
d := object.dflt
s := object.style
o := 1
if s[-2:0] == "no" then {
s := s[1:-2]
o := &null
}
t := table()
t["_style"] := s
t["_outline"] := o
t["_toggle"] := object.toggle
t["_dflt"] := object.dflt
t["a_label"] := object.label
t["b_id"] := object.id
t["c_callback"] := object.proc
t["d_x"] := object.x
t["e_y"] := object.y - CANVASY
t["f_width"] := object.w
t["g_height"] := object.h
repeat {
if button_dialog(t) == "Cancel" then
fail
if illegal(t["a_label"], "Label", "l") |
illegal(t["b_id"], "ID", "s") |
illegal(t["c_callback"], "Callback", "p") |
illegal(t["d_x"], "X", "i") |
illegal(t["e_y"], "Y", "i") |
illegal(t["f_width"], "Width", MIN_W) |
illegal(t["g_height"], "Height", MIN_H)
then
next
if t["_style"] ? ="xbox" & *t["a_label"] > 0 then {
Notice("No text is allowed with xbox style")
next
}
if \t["_toggle"] & \t["_dflt"] then {
Notice("A toggle button cannot be a dialog default")
next
}
object.style := t["_style"]
if /t["_outline"] then
object.style ||:= "no"
object.dflt := t["_dflt"]
object.toggle := t["_toggle"]
object.label := t["a_label"]
object.id := t["b_id"]
object.proc := t["c_callback"]
object.v.style := object.style
object.v.s := object.label
unfocus_object(object)
if /object.dflt & \d then # remove default frame
EraseArea(object.x - 4, object.y - 4, object.w + 8, object.h + 8)
move_object(object,
t["d_x"], t["e_y"] + CANVASY, t["f_width"], t["g_height"])
focus_object(object)
break
}
end
#===<<vib:begin>>=== modify using vib; do not remove this marker line
procedure button_dialog(win, deftbl)
static dstate
initial dstate := dsetup(win,
["button_dialog:Sizer::1:0,0,392,240:",],
["_cancel:Button:regular::211,189,50,30:Cancel",],
["_dflt:Button:check:1:245,148,125,20:dialog default",],
["_okay:Button:regular:-1:141,189,50,30:Okay",],
["_outline:Button:check:1:245,85,76,20:outline",],
["_style:Choice::4:142,85,78,84:",,
["regular","check","circle","xbox"]],
["_toggle:Button:check:1:245,116,76,20:toggle",],
["a_label:Text::40:13,14,360,19:label: \\=",],
["b_id:Text::40:13,35,360,19:ID: \\=",],
["c_callback:Text::40:13,56,360,19:callback: \\=",],
["d_x:Text::3:13,85,101,19: x: \\=",],
["e_y:Text::3:13,106,101,19: y: \\=",],
["f_width:Text::3:13,131,101,19: width: \\=",],
["g_height:Text::3:13,152,101,19: height: \\=",],
)
return dpopup(win, deftbl, dstate)
end
#===<<vib:end>>=== end of section maintained by vib
|
