4 * Description: Simple Calculator Application
6 * Author: Mike Macgirvin <http://macgirvin.com/profile/mike>
8 use Friendica\Core\Hook;
11 function calc_install() {
12 Hook::register('app_menu', 'addon/calc/calc.php', 'calc_app_menu');
15 function calc_app_menu($a,&$b) {
16 $b['app_menu'][] = '<div class="app-title"><a href="calc">Calculator</a></div>';
20 function calc_module() {}
25 function calc_init($a) {
29 <script language="JavaScript">
30 /**************************************
31 * www.FemaleNerd.com *
32 **************************************/
34 // Declare global variables
41 function addDisplay(n){
42 id = document.getElementById("display");
45 id.value = displayText
49 function addNumbers() {
50 if (displayText == "") {
53 num1 = parseFloat(displayText)
59 function subtractNumbers() {
60 if (displayText == "") {
63 num1 = parseFloat(displayText)
64 operatorType = "subtract"
69 function multiplyNumbers() {
70 if (displayText == "") {
73 num1 = parseFloat(displayText)
74 operatorType = "multiply"
79 function divideNumbers() {
80 if (displayText == "") {
83 num1 = parseFloat(displayText)
84 operatorType = "divide"
90 id = document.getElementById("display");
91 if (displayText == "") {
95 num1 = parseFloat(displayText)
98 result = Math.sin(num1)
103 alert("Please write the number first")
109 id = document.getElementById("display");
110 if (displayText == "") {
114 num1 = parseFloat(displayText)
117 result = Math.cos(num1)
122 alert("Please write the number first")
128 id = document.getElementById("display");
129 if (displayText == "") {
133 num1 = parseFloat(displayText)
136 result = Math.asin(num1)
141 alert("Please write the number first")
147 id = document.getElementById("display");
148 if (displayText == "") {
152 num1 = parseFloat(displayText)
155 result = Math.acos(num1)
160 alert("Please write the number first")
166 id = document.getElementById("display");
167 if (displayText == "") {
171 num1 = parseFloat(displayText)
174 result = Math.sqrt(num1)
179 alert("Please write the number first")
183 // Square number (number to the power of two)
185 id = document.getElementById("display");
186 if (displayText == "") {
190 num1 = parseFloat(displayText)
198 alert("Please write the number first")
202 // Convert degrees to radians
203 function degToRad() {
204 id = document.getElementById("display");
205 if (displayText == "") {
209 num1 = parseFloat(displayText)
212 result = num1 * Math.PI / 180
217 alert("Please write the number first")
221 // Convert radians to degrees
222 function radToDeg() {
223 id = document.getElementById("display");
224 if (displayText == "") {
228 num1 = parseFloat(displayText)
231 result = num1 * 180 / Math.PI
236 alert("Please write the number first")
241 function calculate() {
242 id = document.getElementById("display");
244 if (displayText != "") {
245 num2 = parseFloat(displayText)
247 if (operatorType == "add") {
252 if (operatorType == "subtract") {
256 // Calc: Multiplication
257 if (operatorType == "multiply") {
262 if (operatorType == "divide") {
269 id.value = "Oops! Error!"
274 function clearDisplay() {
275 id = document.getElementById("display");
283 DI::page()['htmlhead'] .= $x;
286 function calc_content($app) {
296 <table bgcolor="#af9999" border="1">
298 <table border="1" cellpadding="2" cellspacing="2">
301 <TR><TD VALIGN=top colspan=6 ALIGN="center"> <H2>Calculator</H2> </TD>
304 <td colspan="5"><input size="22" id="display" name="display" type="text"></td>
305 </tr><tr align="left" valign="middle">
306 <td><input name="one" value=" 1 " onclick="addDisplay(1)" type="button"></td>
307 <td><input name="two" value=" 2 " onclick="addDisplay(2)" type="button"></td>
308 <td><input name="three" value=" 3 " onclick="addDisplay(3)" type="button"></td>
309 <td><input name="plus" value=" + " onclick="addNumbers()" type="button"></td>
310 </tr><tr align="left" valign="middle">
311 <td><input name="four" value=" 4 " onclick="addDisplay(4)" type="button"></td>
312 <td><input name="five" value=" 5 " onclick="addDisplay(5)" type="button"></td>
313 <td><input name="six" value=" 6 " onclick="addDisplay(6)" type="button"></td>
314 <td><input name="minus" value=" - " onclick="subtractNumbers()" type="button"></td>
315 </tr><tr align="left" valign="middle">
316 <td><input name="seven" value=" 7 " onclick="addDisplay(7)" type="button"></td>
317 <td><input name="eight" value=" 8 " onclick="addDisplay(8)" type="button"></td>
318 <td><input name="nine" value=" 9 " onclick="addDisplay(9)" type="button"></td>
319 <td><input name="multiplication" value=" * " onclick="multiplyNumbers()" type="button"></td>
320 </tr><tr align="left" valign="middle">
321 <td><input name="zero" value=" 0 " onclick="addDisplay(0)" type="button"></td>
322 <td><input name="pi" value=" Pi " onclick="addDisplay(Math.PI)" type="button"> </td>
323 <td><input name="dot" value=" . " onclick='addDisplay(".")' type="button"></td>
324 <td><input name="division" value=" / " onclick="divideNumbers()" type="button"></td>
325 </tr><tr align="left" valign="middle">
326 <td><input name="sqareroot" value="sqrt" onclick="sqrt()" type="button"></td>
327 <td><input name="squarex" value=" x^2" onclick="square()" type="button"></td>
328 <td><input name="deg-rad" value="d2r " onclick="degToRad()" type="button"></td>
329 <td><input name="rad-deg" value="r2d " onclick="radToDeg()" type="button"></td>
330 </tr><tr align="left" valign="middle">
331 <td><input name="sine" value=" sin " onclick="sin()" type="button"></td>
332 <td><input name="arcsine" value="asin" onclick="arcSin()" type="button"></td>
333 <td><input name="cosine" value="cos" onclick="cos()" type="button"></td>
334 <td><input name="arccosine" value="acs" onclick="arcCos()" type="button"></td>
336 </tr><tr align="left" valign="middle">
337 <td colspan="2"><input name="clear" value=" Clear " onclick="clearDisplay()" type="button"></td>
338 <td colspan="3"><input name="enter" value=" = " onclick="calculate()" type="button"></td>
340 </tr></tbody></table>
345 <B>NOTE:</B> All sine and cosine calculations are
346 <br>done in radians. Remember to convert first
347 <br>if using degrees.
351 </td></tr></tbody></table>
354 </td></tr></tbody></table>