| # A silly little calculator implemented in Jacl using |
| # Java components for the UI. |
| |
| package require java |
| |
| set f [java::new java.awt.Frame "BSH Calculator (jacl/tcl)"] |
| bsf addEventListener $f "window" "windowClosing" "exit" |
| set p [java::new java.awt.Panel] |
| |
| set f1 [java::new java.awt.TextField] |
| $f1 setColumns 20 |
| bsf addEventListener $f1 "action" "" "doMath" |
| set f2 [java::new java.awt.TextField] |
| bsf addEventListener $f2 "text" "" "doMath" |
| |
| set p [java::new java.awt.Panel] |
| $p setLayout [java::new java.awt.GridLayout 2 2] |
| $p add [java::new java.awt.Label "Enter Operand"] |
| $p add $f1 |
| $p add [java::new java.awt.Label "Enter Operand"] |
| $p add $f2 |
| |
| $f add "North" $p |
| |
| $f add "Center" [java::new java.awt.Label "Results:"] |
| |
| set p [java::new java.awt.Panel] |
| $p setLayout [java::new java.awt.GridLayout 4 2] |
| $p add [java::new java.awt.Label "Sum"] |
| $p add [set sum [java::new java.awt.TextField]] |
| $sum setColumns 20 |
| $p add [java::new java.awt.Label "Difference"] |
| $p add [set diff [java::new java.awt.TextField]] |
| $p add [java::new java.awt.Label "Product"] |
| $p add [set prod [java::new java.awt.TextField]] |
| $p add [java::new java.awt.Label "Quotient"] |
| $p add [set quo [java::new java.awt.TextField]] |
| $f add "South" $p |
| |
| $f pack |
| $f show |
| $f toFront |
| |
| proc getField {f} { |
| set t [$f getText] |
| if {$t == ""} { |
| return 0 |
| } else { |
| return [java::call java.lang.Integer parseInt $t] |
| } |
| } |
| |
| proc doMath {} { |
| global f1 f2 sum diff prod quo |
| set n1 [getField $f1] |
| set n2 [getField $f2] |
| $sum setText [expr $n1 + $n2] |
| $diff setText [expr $n1 - $n2] |
| $prod setText [expr $n1 * $n2] |
| $quo setText [expr $n1 / $n2] |
| } |