364 lines
8.4 KiB
PHP
364 lines
8.4 KiB
PHP
<?php
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/**
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* Name: Calculator App
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* Description: Simple Calculator Application
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* Version: 1.0
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* Author: Mike Macgirvin <http://macgirvin.com/profile/mike>
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*/
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use Friendica\Core\Hook;
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use Friendica\DI;
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function calc_install() {
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Hook::register('app_menu', 'addon/calc/calc.php', 'calc_app_menu');
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}
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function calc_uninstall() {
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Hook::unregister('app_menu', 'addon/calc/calc.php', 'calc_app_menu');
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}
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function calc_app_menu($a,&$b) {
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$b['app_menu'][] = '<div class="app-title"><a href="calc">Calculator</a></div>';
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}
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function calc_module() {}
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function calc_init($a) {
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$x = <<< EOT
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<script language="JavaScript">
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/**************************************
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* www.FemaleNerd.com *
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**************************************/
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// Declare global variables
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var displayText = ""
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var num1
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var num2
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var operatorType
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// Write to display
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function addDisplay(n){
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id = document.getElementById("display");
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id.value = ""
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displayText += n
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id.value = displayText
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}
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// Addition
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function addNumbers() {
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if (displayText == "") {
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displayText = result
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}
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num1 = parseFloat(displayText)
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operatorType = "add"
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displayText = ""
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}
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// Subtraction
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function subtractNumbers() {
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if (displayText == "") {
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displayText = result
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}
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num1 = parseFloat(displayText)
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operatorType = "subtract"
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displayText = ""
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}
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// Multiplication
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function multiplyNumbers() {
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if (displayText == "") {
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displayText = result
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}
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num1 = parseFloat(displayText)
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operatorType = "multiply"
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displayText = ""
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}
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// Division
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function divideNumbers() {
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if (displayText == "") {
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displayText = result
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}
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num1 = parseFloat(displayText)
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operatorType = "divide"
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displayText = ""
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}
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// Sine
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function sin() {
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id = document.getElementById("display");
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if (displayText == "") {
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num1 = result
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}
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else {
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num1 = parseFloat(displayText)
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}
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if (num1 != "") {
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result = Math.sin(num1)
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id.value = result
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displayText = ""
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}
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else {
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alert("Please write the number first")
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}
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}
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// Cosine
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function cos() {
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id = document.getElementById("display");
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if (displayText == "") {
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num1 = result
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}
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else {
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num1 = parseFloat(displayText)
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}
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if (num1 != "") {
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result = Math.cos(num1)
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id.value = result
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displayText = ""
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}
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else {
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alert("Please write the number first")
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}
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}
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// ArcSine
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function arcSin() {
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id = document.getElementById("display");
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if (displayText == "") {
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num1 = result
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}
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else {
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num1 = parseFloat(displayText)
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}
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if (num1 != "") {
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result = Math.asin(num1)
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id.value = result
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displayText = ""
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}
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else {
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alert("Please write the number first")
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}
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}
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// ArcCosine
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function arcCos() {
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id = document.getElementById("display");
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if (displayText == "") {
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num1 = result
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}
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else {
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num1 = parseFloat(displayText)
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}
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if (num1 != "") {
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result = Math.acos(num1)
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id.value = result
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displayText = ""
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}
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else {
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alert("Please write the number first")
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}
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}
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// Square root
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function sqrt() {
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id = document.getElementById("display");
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if (displayText == "") {
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num1 = result
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}
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else {
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num1 = parseFloat(displayText)
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}
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if (num1 != "") {
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result = Math.sqrt(num1)
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id.value = result
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displayText = ""
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}
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else {
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alert("Please write the number first")
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}
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}
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// Square number (number to the power of two)
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function square() {
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id = document.getElementById("display");
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if (displayText == "") {
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num1 = result
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}
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else {
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num1 = parseFloat(displayText)
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}
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if (num1 != "") {
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result = num1 * num1
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id.value = result
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displayText = ""
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}
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else {
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alert("Please write the number first")
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}
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}
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// Convert degrees to radians
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function degToRad() {
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id = document.getElementById("display");
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if (displayText == "") {
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num1 = result
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}
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else {
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num1 = parseFloat(displayText)
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}
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if (num1 != "") {
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result = num1 * Math.PI / 180
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id.value = result
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displayText = ""
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}
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else {
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alert("Please write the number first")
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}
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}
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// Convert radians to degrees
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function radToDeg() {
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id = document.getElementById("display");
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if (displayText == "") {
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num1 = result
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}
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else {
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num1 = parseFloat(displayText)
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}
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if (num1 != "") {
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result = num1 * 180 / Math.PI
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id.value = result
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displayText = ""
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}
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else {
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alert("Please write the number first")
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}
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}
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// Calculations
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function calculate() {
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id = document.getElementById("display");
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if (displayText != "") {
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num2 = parseFloat(displayText)
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// Calc: Addition
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if (operatorType == "add") {
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result = num1 + num2
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id.value = result
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}
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// Calc: Subtraction
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if (operatorType == "subtract") {
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result = num1 - num2
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id.value = result
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}
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// Calc: Multiplication
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if (operatorType == "multiply") {
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result = num1 * num2
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id.value = result
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}
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// Calc: Division
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if (operatorType == "divide") {
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result = num1 / num2
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id.value = result
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}
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displayText = ""
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}
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else {
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id.value = "Oops! Error!"
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}
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}
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// Clear the display
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function clearDisplay() {
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id = document.getElementById("display");
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displayText = ""
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id.value = ""
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}
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</script>
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EOT;
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DI::page()['htmlhead'] .= $x;
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}
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function calc_content($app) {
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$o = '';
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$o .= <<< EOT
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<h3>Calculator</h3>
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<br /><br />
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<table>
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<tbody><tr><td>
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<table bgcolor="#af9999" border="1">
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<tbody><tr><td>
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<table border="1" cellpadding="2" cellspacing="2">
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<form name="calc">
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<!--
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<TR><TD VALIGN=top colspan=6 ALIGN="center"> <H2>Calculator</H2> </TD>
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-->
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<tbody><tr>
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<td colspan="5"><input size="22" id="display" name="display" type="text"></td>
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</tr><tr align="left" valign="middle">
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<td><input name="one" value=" 1 " onclick="addDisplay(1)" type="button"></td>
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<td><input name="two" value=" 2 " onclick="addDisplay(2)" type="button"></td>
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<td><input name="three" value=" 3 " onclick="addDisplay(3)" type="button"></td>
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<td><input name="plus" value=" + " onclick="addNumbers()" type="button"></td>
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</tr><tr align="left" valign="middle">
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<td><input name="four" value=" 4 " onclick="addDisplay(4)" type="button"></td>
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<td><input name="five" value=" 5 " onclick="addDisplay(5)" type="button"></td>
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<td><input name="six" value=" 6 " onclick="addDisplay(6)" type="button"></td>
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<td><input name="minus" value=" - " onclick="subtractNumbers()" type="button"></td>
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</tr><tr align="left" valign="middle">
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<td><input name="seven" value=" 7 " onclick="addDisplay(7)" type="button"></td>
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<td><input name="eight" value=" 8 " onclick="addDisplay(8)" type="button"></td>
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<td><input name="nine" value=" 9 " onclick="addDisplay(9)" type="button"></td>
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<td><input name="multiplication" value=" * " onclick="multiplyNumbers()" type="button"></td>
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</tr><tr align="left" valign="middle">
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<td><input name="zero" value=" 0 " onclick="addDisplay(0)" type="button"></td>
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<td><input name="pi" value=" Pi " onclick="addDisplay(Math.PI)" type="button"> </td>
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<td><input name="dot" value=" . " onclick='addDisplay(".")' type="button"></td>
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<td><input name="division" value=" / " onclick="divideNumbers()" type="button"></td>
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</tr><tr align="left" valign="middle">
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<td><input name="sqareroot" value="sqrt" onclick="sqrt()" type="button"></td>
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<td><input name="squarex" value=" x^2" onclick="square()" type="button"></td>
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<td><input name="deg-rad" value="d2r " onclick="degToRad()" type="button"></td>
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<td><input name="rad-deg" value="r2d " onclick="radToDeg()" type="button"></td>
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</tr><tr align="left" valign="middle">
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<td><input name="sine" value=" sin " onclick="sin()" type="button"></td>
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<td><input name="arcsine" value="asin" onclick="arcSin()" type="button"></td>
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<td><input name="cosine" value="cos" onclick="cos()" type="button"></td>
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<td><input name="arccosine" value="acs" onclick="arcCos()" type="button"></td>
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</tr><tr align="left" valign="middle">
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<td colspan="2"><input name="clear" value=" Clear " onclick="clearDisplay()" type="button"></td>
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<td colspan="3"><input name="enter" value=" = " onclick="calculate()" type="button"></td>
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</tr></tbody></table>
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</form>
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<!--
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<TD VALIGN=top>
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<B>NOTE:</B> All sine and cosine calculations are
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<br>done in radians. Remember to convert first
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<br>if using degrees.
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</TD>
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-->
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</td></tr></tbody></table>
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</td></tr></tbody></table>
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EOT;
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return $o;
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}
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