import gtk
+# GTK calculator UI
class CalculatorGui
super GtkCallable
- var win : GtkWindow is noinit
- var container : GtkGrid is noinit
+ private var win: GtkWindow is noinit
+ private var container: GtkGrid is noinit
- var lbl_disp : GtkLabel is noinit
- var but_eq : GtkButton is noinit
- var but_dot : GtkButton is noinit
+ private var lbl_disp: GtkLabel is noinit
+ private var but_eq: GtkButton is noinit
+ private var but_dot: GtkButton is noinit
- var context = new CalculatorContext
+ private var context = new CalculatorContext
- redef fun signal( sender, user_data )
+ redef fun signal(sender, op)
do
- var after_point = context.after_point
- if after_point == null then
- after_point = 0
- else
- after_point = (after_point.abs)
- end
-
- if user_data isa Char then # is an operation
- var c = user_data
- if c == '.' then
- but_dot.sensitive= false
+ if op isa Char then # is an operation
+ if op == '.' then
+ but_dot.sensitive = false
context.switch_to_decimals
- lbl_disp.text = "{context.current.to_i}."
else
- but_dot.sensitive= true
- context.push_op( c )
-
- var s = context.result.to_precision_native(6)
- var index : nullable Int = null
- for i in s.length.times do
- var chiffre = s.chars[i]
- if chiffre == '0' and index == null then
- index = i
- else if chiffre != '0' then
- index = null
- end
- end
- if index != null then
- s = s.substring(0, index)
- if s.chars[s.length-1] == ',' then s = s.substring(0, s.length-1)
- end
- lbl_disp.text = s
+ but_dot.sensitive = true
+ context.push_op op
end
- else if user_data isa Int then # is a number
- var n = user_data
- context.push_digit( n )
- lbl_disp.text = context.current.to_precision_native(after_point)
+ else if op isa Int then # is a number
+ context.push_digit op
end
+
+ lbl_disp.text = context.display_text
end
init
do
init_gtk
- win = new GtkWindow( 0 )
+ win = new GtkWindow(0)
- container = new GtkGrid(5,5,true)
- win.add( container )
+ container = new GtkGrid(5, 5, true)
+ win.add(container)
- lbl_disp = new GtkLabel( "_" )
- container.attach( lbl_disp, 0, 0, 5, 1 )
+ lbl_disp = new GtkLabel("_")
+ container.attach(lbl_disp, 0, 0, 5, 1)
- # digits
+ # Digits
for n in [0..9] do
- var but = new GtkButton.with_label( n.to_s )
- but.request_size( 64, 64 )
- but.signal_connect( "clicked", self, n )
+ var but = new GtkButton.with_label(n.to_s)
+ but.request_size(64, 64)
+ but.signal_connect("clicked", self, n)
if n == 0 then
- container.attach( but, 0, 4, 1, 1 )
- else container.attach( but, (n-1)%3, 3-(n-1)/3, 1, 1 )
+ container.attach(but, 0, 4, 1, 1)
+ else container.attach(but, (n-1)%3, 3-(n-1)/3, 1, 1)
end
- # operators
+ # Operators
var r = 1
- for op in ['+', '-', '*', '/' ] do
- var but = new GtkButton.with_label( op.to_s )
- but.request_size( 64, 64 )
- but.signal_connect( "clicked", self, op )
- container.attach( but, 3, r, 1, 1 )
+ for op in ['+', '-', '*', '/'] do
+ var but = new GtkButton.with_label(op.to_s)
+ but.request_size(64, 64)
+ but.signal_connect("clicked", self, op)
+ container.attach(but, 3, r, 1, 1)
r+=1
end
# =
- but_eq = new GtkButton.with_label( "=" )
- but_eq.request_size( 64, 64 )
- but_eq.signal_connect( "clicked", self, '=' )
- container.attach( but_eq, 4, 3, 1, 2 )
+ but_eq = new GtkButton.with_label("=")
+ but_eq.request_size(64, 64)
+ but_eq.signal_connect("clicked", self, '=')
+ container.attach(but_eq, 4, 3, 1, 2)
# .
- but_dot = new GtkButton.with_label( "." )
- but_dot.request_size( 64, 64 )
- but_dot.signal_connect( "clicked", self, '.' )
- container.attach( but_dot, 1, 4, 1, 1 )
-
- #C
- var but_c = new GtkButton.with_label( "C" )
- but_c.request_size( 64, 64 )
+ but_dot = new GtkButton.with_label(".")
+ but_dot.request_size(64, 64)
+ but_dot.signal_connect("clicked", self, '.')
+ container.attach(but_dot, 1, 4, 1, 1)
+
+ # C
+ var but_c = new GtkButton.with_label("C")
+ but_c.request_size(64, 64)
but_c.signal_connect("clicked", self, 'C')
- container.attach( but_c, 2, 4, 1, 1 )
+ container.attach(but_c, 2, 4, 1, 1)
win.show_all
end
end
-# graphical application
+# Do not show GUI in when testing
if "NIT_TESTING".environ == "true" then exit 0
var app = new CalculatorGui
nitlanguage / nit.git / blobdiff