| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you under the Apache License, Version 2.0 (the |
| # "License"); you may not use this file except in compliance |
| # with the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, |
| # software distributed under the License is distributed on an |
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| # KIND, either express or implied. See the License for the |
| # specific language governing permissions and limitations |
| # under the License. |
| |
| # 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] |
| } |