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On Screen Keyboard: Need extra functionalities

Posted on 2008-11-01
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Last Modified: 2012-05-05
Hey Guys,

I made my On screen keyboard finally. The JS file and the HTML files are given below. the attached files are the images for the keyboard.

Now i wan't to add three functionalities in the keyboard and i'm confused in how to do it :

1. I need to show the Number keys only and hide rest of the keyboard at certain places. So, how can i do it?

2. I need to give a PRESSED effect to the keys. As in if i a key is entered then it should show that it has been pressed .

3. Continuing on the Pressed effect : When the CAPSLOCK is turned on, the key should remain pressed until it is turned off.

Hope i'm clear guys.

KEYBOARD.JS

 

var specialChar = new Array(new Array("CAPS",""),new Array("ET",""),new Array("#",""));

var standardKeys = new Array(

new Array("1","2","3","4","5","6","7","8","9","0","<img src='bkp.jpg' height='15' width='30'>"),

new Array("Q","W","E","R","T","Y","U","I","O","P"),

new Array("CAPS","A","S","D","F","G","H","J","K","L","Enter"),

new Array("Z","X","C","V","B","N","M"," "));

var currentKey = 0;

var currentRow = 0;

var capsStatus = "OFF";

var inputField;

var keyboardStatus = false;

function generateKeyButton(keyText){

	if(keyText == " "){

	return "<table  cellspacing =\"0\" cellpadding=\"0\" id=\"keyTable_"+keyText+"\"> <tr> <td><img src=\"a/th1_tl.gif\"> </td> <td background=\"a/th1_top.gif\"> </td> <td> <img src=\"a/th1_tr.gif\"> </td> </tr> <tr> <td background=\"a/th1_ls.gif\"> </td><td>	<table width=\"165\" height=\"15\" cellspacing =\"0\" cellpadding=\"0\">	<tr>	<td id=\"key_"+keyText+"\" ><center>"+keyText+"</center>	</td>	</tr>	</table> </td><td background=\"a/th1_rs.gif\"> </td> </tr> <tr> <td>  <img src=\"a/th1_bl.gif\">  </td> <td background=\"a/th1_btm.gif\"> </td><td>  <img src=\"a/th1_br.gif\"> </td> </tr> </table>";

	}else{

	return "<table  cellspacing =\"0\" cellpadding=\"0\" id=\"keyTable_"+keyText+"\"> <tr> <td><img src=\"a/th1_tl.gif\"> </td> <td background=\"a/th1_top.gif\"> </td> <td> <img src=\"a/th1_tr.gif\"> </td> </tr> <tr> <td background=\"a/th1_ls.gif\"> </td><td>	<table width=\"15\" height=\"15\" cellspacing =\"0\" cellpadding=\"0\">	<tr>	<td id=\"key_"+keyText+"\" ><center>"+keyText+"</center>	</td>	</tr>	</table> </td><td background=\"a/th1_rs.gif\"> </td> </tr> <tr> <td>  <img src=\"a/th1_bl.gif\">  </td> <td background=\"a/th1_btm.gif\"> </td><td>  <img src=\"a/th1_br.gif\"> </td> </tr> </table>";

	}

}

 

function generateFullKeyboard(){

	var keyBoardStr = "<table  cellpadding=\"0\" cellspacing=\"1\" border=\"0\"><tr><td ><table cellpadding=\"0\" cellspacing=\"0\" >";

	for(var keyIndex=0;keyIndex<standardKeys.length;keyIndex++){

		keyBoardStr = keyBoardStr + "<tr><td><table   cellpadding=\"0\" cellspacing=\"1\" ><tr>";

		for(index2=0;index2<standardKeys[keyIndex].length;index2++){

			if((index2==0 && keyIndex==0) || (index2==0 && keyIndex==1))

			keyBoardStr = keyBoardStr +	"<td><table  cellspacing =\"0\" cellpadding=\"0\" > <tr> <td><img src=\"a/th1_tl.gif\"> </td> <td background=\"a/th1_top.gif\"> </td> <td> <img src=\"a/th1_tr.gif\"> </td> </tr> <tr> <td background=\"a/th1_ls.gif\"> </td><td>	<table width=\"15\" height=\"15\" cellspacing =\"0\" cellpadding=\"0\">	<tr>	<td ><center>&nbsp;</center>	</td>	</tr>	</table> </td><td background=\"a/th1_rs.gif\"> </td> </tr> <tr> <td>  <img src=\"a/th1_bl.gif\">  </td> <td background=\"a/th1_btm.gif\"> </td><td>  <img src=\"a/th1_br.gif\"> </td> </tr> </table></td><td>" +generateKeyButton(standardKeys[keyIndex][index2]) + "</td>";

			else if((index2==9 && keyIndex==1))

			keyBoardStr = keyBoardStr +	"<td>" +generateKeyButton(standardKeys[keyIndex][index2]) + "</td><td><table  cellspacing =\"0\" cellpadding=\"0\" > <tr> <td><img src=\"a/th1_tl.gif\"> </td> <td background=\"a/th1_top.gif\"> </td> <td> <img src=\"a/th1_tr.gif\"> </td> </tr> <tr> <td background=\"a/th1_ls.gif\"> </td><td>	<table width=\"15\" height=\"15\" cellspacing =\"0\" cellpadding=\"0\">	<tr>	<td ><center>&nbsp;</center>	</td>	</tr>	</table> </td><td background=\"a/th1_rs.gif\"> </td> </tr> <tr> <td>  <img src=\"a/th1_bl.gif\">  </td> <td background=\"a/th1_btm.gif\"> </td><td>  <img src=\"a/th1_br.gif\"> </td> </tr> </table></td>";

			else

			keyBoardStr = keyBoardStr + "<td>" +generateKeyButton(standardKeys[keyIndex][index2]) + "</td>";

		}

		keyBoardStr = keyBoardStr + "</tr></table></td></tr>";

	}

	keyBoardStr = keyBoardStr + "</table></td></tr></table>";

	document.getElementById("keyboard").innerHTML = keyBoardStr;

	document.getElementById("keyTable_1").style.backgroundColor="#cccccc";

 

}

 

 

document.onkeydown = checkKeycode

 

function dontChangeFocus()

{

	inputField.focus();

}

 

function checkKeycode(e) {

	var keycode;

	if (window.event) keycode = window.event.keyCode;

	else if (e) keycode = e.which;

	if(keycode==38||keycode==1280)//up Arrow

	{

		goUp();

	}

	else if(keycode==40||keycode==1281)//down arrow

	{

		 goDown();

	}

	else if(keycode==39||keycode==1283)

	{

		goRight();

	}

	else if(keycode==37||keycode==1282)

	{

		goLeft();

	}

	else if(keycode==13)

	{

		if(keyboardStatus == false && inputField!=null){

			showKeyboard(inputField);

		}

		else{

			pressSelect();

		}

	}

	else if(keycode==8 || keycode==1288)

	{

		goBack();

	}

}

 

function goLeft(){

	var tempKey = "key_"+standardKeys[currentRow][currentKey];

	var tempTableKey = "keyTable_"+standardKeys[currentRow][currentKey];

	document.getElementById(tempKey).bgColor="#ffffff";

 

	currentKey--;

	if(currentKey==-1){

		currentKey=standardKeys[currentRow].length-1;

	}

	tempKey = "key_"+standardKeys[currentRow][currentKey];

	tempTableKey = "keyTable_"+standardKeys[currentRow][currentKey];

	document.getElementById(tempKey).bgColor="#cccccc";

 

}

 

function goRight(){

	var tempKey = "key_"+standardKeys[currentRow][currentKey];

	var tempTableKey = "keyTable_"+standardKeys[currentRow][currentKey];

	document.getElementById(tempKey).bgColor="#ffffff";

 

	currentKey++;

	if(currentKey>=standardKeys[currentRow].length){

		currentKey=0;

	}

	tempKey = "key_"+standardKeys[currentRow][currentKey];

	tempTableKey = "keyTable_"+standardKeys[currentRow][currentKey];

	document.getElementById(tempKey).bgColor="#cccccc";

 

}

 

 

function goUp(){

	var tempKey = "key_"+standardKeys[currentRow][currentKey];

	var tempTableKey = "keyTable_"+standardKeys[currentRow][currentKey];

	document.getElementById(tempKey).bgColor="#ffffff";

 

	currentRow--;

	if(currentRow==-1){

		currentRow=standardKeys.length-1;

	}

	while(currentKey >= standardKeys[currentRow].length){

		currentKey--

	}

	tempKey = "key_"+standardKeys[currentRow][currentKey];

	tempTableKey = "keyTable_"+standardKeys[currentRow][currentKey];

	document.getElementById(tempKey).bgColor="#cccccc";

	

}

 

function goDown(){

	var tempKey = "key_"+standardKeys[currentRow][currentKey];

	var tempTableKey = "keyTable_"+standardKeys[currentRow][currentKey];

	document.getElementById(tempKey).bgColor="#ffffff";

	currentRow++;

	if(currentRow>=standardKeys.length){

		currentRow=0;

	}

 

	while(currentKey >= standardKeys[currentRow].length){

		currentKey--

	}

 

	tempKey = "key_"+standardKeys[currentRow][currentKey];

	tempTableKey = "keyTable_"+standardKeys[currentRow][currentKey];

	document.getElementById(tempKey).bgColor="#cccccc";

	

 

 

}

 

 

function pressSelect(){

	var keyStr = (""+standardKeys[currentRow][currentKey]);

	if(capsStatus=="OFF"){

		keyStr = keyStr.toLowerCase();

	}else{

		keyStr = keyStr.toUpperCase();

	}

	if(checkForSpecialChars(standardKeys[currentRow][currentKey]))

		inputField.value = inputField.value + keyStr;

}

 

function checkForSpecialChars(keyText){

	for(var specialIndex=0;specialIndex<specialChar.length;specialIndex++){

		for(var index2=0;index2<specialChar[specialIndex].length;index2++){

			if(keyText==specialChar[specialIndex][index2]){

				if(keyText=="CAPS" && capsStatus == "ON"){

					capsStatus = "OFF";

				}else if(keyText=="CAPS" && capsStatus == "OFF")

				{

					capsStatus = "ON";

				}

				return false;

			}

		}

	}

	return true;

}

 

function goBack(){

	if(inputField.value.length>0){

		inputField.value = inputField.value.substring(0,inputField.value.length-1);

	}

}

 

KEYBOARD.HTML :

 

<html>

<script language="JavaScript" type="text/javascript" src="keyboard.js"></script>

<body bgcolor="#ffffff" id="bodyid">

<div style="position:absolute;left:100;top:30;" ><input type="text" onfocus="javascript:textBoxInFocus(this);"  name="textField" onblur="javascript:textBoxOutFocus();" id="textField" style="width:260px;" >

</div>

<div style="position:absolute;left:600;top:30;"><input type="text" onfocus="javascript:textBoxInFocus(this);"  name="textField2" onblur="javascript:textBoxOutFocus();" id="textField2" style="width:260px;" >

</div>

 

<div id="keyboard"  style="display:none;border:1px solid #000000 ;position:absolute;left:150;top:300;width:410"></div>

 

 

<script language="javascript">

generateFullKeyboard();

 

function hideKeyboard(){

keyboardStatus = false;

inputField.onblur="javascript:textBoxOutFocus();";

document.getElementById("keyboard").style.display="none";

//inputField = null;

}

function showKeyboard(obj){

keyboardStatus = true;

document.getElementById("keyboard").style.display="block";

inputField = obj;

inputField.onblur="javascript:textBoxOutFocus();dontChangeFocus();";

 

}

 

function textBoxOutFocus()

{

	//inputField = null;

}

 

function textBoxInFocus(obj){

	inputField = obj;

}

 

function findPosX(obj)

  {

    var curleft = 0;

    if(obj.offsetParent)

        while(1) 

        {

          curleft += obj.offsetLeft;

          if(!obj.offsetParent)

            break;

          obj = obj.offsetParent;

        }

    else if(obj.x)

        curleft += obj.x;

    return curleft;

  }

 

  function findPosY(obj)

  {

    var curtop = 0;

    if(obj.offsetParent)

        while(1)

        {

          curtop += obj.offsetTop;

          if(!obj.offsetParent)

            break;

          obj = obj.offsetParent;

        }

    else if(obj.y)

        curtop += obj.y;

    return curtop;

  }

 

	function test()

	{

		printstring("Hi\n");

	}

</script>

</body>

</html>

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th1-bl.gif
th1-br.gif
th1-btm.gif
th1-ls.gif
th1-rs.gif
th1-tl.gif
th1-top.gif
th1-tr.gif
0
Comment
Question by:manas_sharma86
2 Comments
 
LVL 17

Accepted Solution

by:
cem_turk earned 500 total points
ID: 23067669
following will change the bgcolor of the cells when buttons are pressed


function pressSelect(){

	var keyStr = (""+standardKeys[currentRow][currentKey]);

	if(capsStatus=="OFF"){

		keyStr = keyStr.toLowerCase();

	}else{

		keyStr = keyStr.toUpperCase();

	}

	if(checkForSpecialChars(standardKeys[currentRow][currentKey])) {

		inputField.value = inputField.value + keyStr;

document.getElementById("key_" + keyStr).style.color="red"; //change key color to red

setTimeout("document.getElementById('key_' " + keyStr + "').style.color=''",500); //reset color after half a second
 

}

}

 

function checkForSpecialChars(keyText){

	for(var specialIndex=0;specialIndex<specialChar.length;specialIndex++){

		for(var index2=0;index2<specialChar[specialIndex].length;index2++){

			if(keyText==specialChar[specialIndex][index2]){

				if(keyText=="CAPS" && capsStatus == "ON"){

					capsStatus = "OFF";

document.getElementById("key_CAPS").style.color="";

				}else if(keyText=="CAPS" && capsStatus == "OFF")

				{

					capsStatus = "ON";

document.getElementById("key_CAPS").style.color="red";

				}

				return false;

			}

		}

	}

	return true;

}

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