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Diffstat (limited to 'examples/demos/calqlatr/content/calculator.js')
-rw-r--r-- | examples/demos/calqlatr/content/calculator.js | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/examples/demos/calqlatr/content/calculator.js b/examples/demos/calqlatr/content/calculator.js new file mode 100644 index 0000000000..a08d419c42 --- /dev/null +++ b/examples/demos/calqlatr/content/calculator.js @@ -0,0 +1,143 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + + +var curVal = 0 +var memory = 0 +var lastOp = "" +var previousOperator = "" +var digits = "" + +function disabled(op) { + if (op == "." && digits.toString().search(/\./) != -1) { + return true + } else if (op == window.squareRoot && digits.toString().search(/-/) != -1) { + return true + } else { + return false + } +} + +function digitPressed(op) +{ + if (disabled(op)) + return + if (digits.toString().length >= 14) + return + if (lastOp.toString().length == 1 && ((lastOp >= "0" && lastOp <= "9") || lastOp == ".") ) { + digits = digits + op.toString() + display.appendDigit(op.toString()) + } else { + digits = op + display.appendDigit(op.toString()) + } + lastOp = op +} + +function operatorPressed(op) +{ + if (disabled(op)) + return + lastOp = op + + if (previousOperator == "+") { + digits = Number(digits.valueOf()) + Number(curVal.valueOf()) + } else if (previousOperator == "−") { + digits = Number(curVal) - Number(digits.valueOf()) + } else if (previousOperator == "×") { + digits = Number(curVal) * Number(digits.valueOf()) + } else if (previousOperator == "÷") { + digits = Number(Number(curVal) / Number(digits.valueOf())).toString() + } else if (previousOperator == "=") { + } + + if (op == "+" || op == "−" || op == "×" || op == "÷") { + previousOperator = op + curVal = digits.valueOf() + display.displayOperator(previousOperator) + return + } + + if (op == "=") { + display.newLine("=", digits.toString()) + } + + curVal = 0 + previousOperator = "" + + if (op == "1/x") { + digits = (1 / digits.valueOf()).toString() + } else if (op == "x^2") { + digits = (digits.valueOf() * digits.valueOf()).toString() + } else if (op == "Abs") { + digits = (Math.abs(digits.valueOf())).toString() + } else if (op == "Int") { + digits = (Math.floor(digits.valueOf())).toString() + } else if (op == window.plusminus) { + digits = (digits.valueOf() * -1).toString() + } else if (op == window.squareRoot) { + digits = (Math.sqrt(digits.valueOf())).toString() + } else if (op == "mc") { + memory = 0; + } else if (op == "m+") { + memory += digits.valueOf() + } else if (op == "mr") { + digits = memory.toString() + } else if (op == "m-") { + memory = digits.valueOf() + } else if (op == window.leftArrow) { + digits = digits.toString().slice(0, -1) + if (digits.length == 0) { + digits = "0" + } + } else if (op == "Off") { + Qt.quit(); + } else if (op == "C") { + digits = "0" + } else if (op == "AC") { + curVal = 0 + memory = 0 + lastOp = "" + digits ="0" + } + + +} + |