1 /****************************************************************************
3 ** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
4 ** Contact: http://www.qt-project.org/legal
6 ** This file is part of the examples of the Qt Toolkit.
8 ** $QT_BEGIN_LICENSE:BSD$
9 ** You may use this file under the terms of the BSD license as follows:
11 ** "Redistribution and use in source and binary forms, with or without
12 ** modification, are permitted provided that the following conditions are
14 ** * Redistributions of source code must retain the above copyright
15 ** notice, this list of conditions and the following disclaimer.
16 ** * Redistributions in binary form must reproduce the above copyright
17 ** notice, this list of conditions and the following disclaimer in
18 ** the documentation and/or other materials provided with the
20 ** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
21 ** of its contributors may be used to endorse or promote products derived
22 ** from this software without specific prior written permission.
25 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
26 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
27 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
28 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
29 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
30 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
31 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
32 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
33 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
34 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
39 ****************************************************************************/
45 var previousOperator = ""
48 function disabled(op) {
49 if (op == "." && digits.toString().search(/\./) != -1) {
51 } else if (op == window.squareRoot && digits.toString().search(/-/) != -1) {
58 function digitPressed(op)
62 if (digits.toString().length >= 14)
64 if (lastOp.toString().length == 1 && ((lastOp >= "0" && lastOp <= "9") || lastOp == ".") ) {
65 digits = digits + op.toString()
66 display.appendDigit(op.toString())
69 display.appendDigit(op.toString())
74 function operatorPressed(op)
80 if (previousOperator == "+") {
81 digits = Number(digits.valueOf()) + Number(curVal.valueOf())
82 } else if (previousOperator == "−") {
83 digits = Number(curVal) - Number(digits.valueOf())
84 } else if (previousOperator == "×") {
85 digits = Number(curVal) * Number(digits.valueOf())
86 } else if (previousOperator == "÷") {
87 digits = Number(Number(curVal) / Number(digits.valueOf())).toString()
88 } else if (previousOperator == "=") {
91 if (op == "+" || op == "−" || op == "×" || op == "÷") {
93 curVal = digits.valueOf()
94 display.displayOperator(previousOperator)
99 display.newLine("=", digits.toString())
103 previousOperator = ""
106 digits = (1 / digits.valueOf()).toString()
107 } else if (op == "x^2") {
108 digits = (digits.valueOf() * digits.valueOf()).toString()
109 } else if (op == "Abs") {
110 digits = (Math.abs(digits.valueOf())).toString()
111 } else if (op == "Int") {
112 digits = (Math.floor(digits.valueOf())).toString()
113 } else if (op == window.plusminus) {
114 digits = (digits.valueOf() * -1).toString()
115 } else if (op == window.squareRoot) {
116 digits = (Math.sqrt(digits.valueOf())).toString()
117 } else if (op == "mc") {
119 } else if (op == "m+") {
120 memory += digits.valueOf()
121 } else if (op == "mr") {
122 digits = memory.toString()
123 } else if (op == "m-") {
124 memory = digits.valueOf()
125 } else if (op == window.leftArrow) {
126 digits = digits.toString().slice(0, -1)
127 if (digits.length == 0) {
130 } else if (op == "Off") {
132 } else if (op == "C") {
134 } else if (op == "AC") {