Keyboard Based Cursor Content Copy Tutorial
The “onkeydown” keyboard event can involve in its logic three mouse event (event object) property usages that caught our interest recently …
… and we wanted to have “keyboard” meets “mouse” events, along with the brilliance of Lorem Picsum regarding background image randomosity and quality, working with HTML …
<div id=mydiv onfocus='setTimeout(alte, 1000);' onclick='stamp(this);' title='Click and type and see the cursor change as you use Alt or Shift or Control that can be reset via Caps Lock with a click copying cursor into content ... RJM Programming ... May, 2022 ... thanks to https://picsum.photos/ Lorem Picsum' spellcheck='false' contenteditable=true style='width:100vw;height:100%;color:transparent;text-color:transparent;' data-onkeypress=xycursorlook(event); onkeydown=cursorlook(event); onmousemove=xycursorlook(event); ontouchmove=xycursorlook(event);></div>
… in a way we hadn’t tried before that called on some inhouse cursor SVG creations (and so is, alas, just a non-mobile fully featured experience), in the sense that …
- keyboard helps creating the “what” regarding content …
<script type='text/javascript'>
var lastkeymodifier=''
var lastcursor="Url(\"data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='126' height='48' viewport='0 0 100 100' style='border-radius:15px;background-color:rgba(0,255,0,0.3);fill:black;font-family:Verdana;font-size:16px;'><text y='80%'>Shift/Alt/Ctrl\\002753</text></svg>\") 16 0, crosshair";
var pos3=-1, pos4=-1;
var subdiv=1;
var lastpos3=-2, lastpos4=-1;
var allowable=false;
function cursorlook(evt) {
if (evt.altKey) {
if (lastkeymodifier != 'alt') {
lastcursor="Url(\"data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='66' height='48' viewport='0 0 100 100' style='border-radius:15px;background-color:rgba(0,0,255,0.3);fill:black;font-family:Verdana;font-size:17px;'><text y='80%'>Alt\\01f3d5</text></svg>\") 16 0, progress";
document.head.innerHTML+='<style> html { cursor: ' + lastcursor + '; } </style>';
lastkeymodifier='alt';
}
} else if (evt.ctrlKey) {
if (lastkeymodifier != 'ctrl') {
lastcursor="Url(\"data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='66' height='48' viewport='0 0 100 100' style='border-radius:15px;background-color:rgba(0,255,0,0.3);fill:black;font-family:Verdana;font-size:17px;'><text y='80%'>Ctrl\\01f333</text></svg>\") 16 0, pointer";
document.head.innerHTML+='<style> html { cursor: ' + lastcursor + '; } </style>';
lastkeymodifier='ctrl';
}
} else if (evt.shiftKey) {
if (lastkeymodifier != 'shift') {
lastcursor="Url(\"data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='66' height='48' viewport='0 0 100 100' style='border-radius:15px;background-color:rgba(255,0,0,0.3);fill:black;font-family:Verdana;font-size:17px;'><text y='80%'>Shift\\01f389</text></svg>\") 16 0, grab";
document.head.innerHTML+='<style> html { cursor: ' + lastcursor + '; } </style>';
lastkeymodifier='shift';
}
} else {
if (lastkeymodifier != '') {
lastcursor="Url(\"data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='126' height='48' viewport='0 0 100 100' style='border-radius:15px;background-color:rgba(0,255,0,0.3);fill:black;font-family:Verdana;font-size:16px;'><text y='80%'>Shift/Alt/Ctrl\\002753</text></svg>\") 16 0, crosshair";
document.head.innerHTML+='<style> html { cursor: ' + lastcursor + '; } </style>';
lastkeymodifier='';
}
}
}
</script>
- mouse “onmousemove” or “ontouchmove” helps with the “where” regarding content above …
<script type='text/javascript'>
var pos3=-1, pos4=-1;
var subdiv=1;
var lastpos3=-2, lastpos4=-1;
var allowable=false;
function xycursorlook(e) {
e = e || window.event;
e.preventDefault();
if (e.touches) {
if (e.touches[0].pageX) {
pos3 = e.touches[0].pageX;
pos4 = e.touches[0].pageY;
} else {
pos3 = e.touches[0].clientX;
pos4 = e.touches[0].clientY;
}
//console.log('pos3=' + pos3 + ',pos4=' + pos4);
} else if (e.clientX || e.clientY) {
pos3 = e.clientX;
pos4 = e.clientY;
} else {
pos3 = e.pageX;
pos4 = e.pageY;
}
}
</script>
- preparations for “onclick” way a cursor can be plonked into (real lasting) content …
<script type='text/javascript'>
var lastcursor="Url(\"data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='126' height='48' viewport='0 0 100 100' style='border-radius:15px;background-color:rgba(0,255,0,0.3);fill:black;font-family:Verdana;font-size:16px;'><text y='80%'>Shift/Alt/Ctrl\\002753</text></svg>\") 16 0, crosshair";
var pos3=-1, pos4=-1;
var subdiv=1;
var lastpos3=-2, lastpos4=-1;
var allowable=false;
function stamp(divo) {
if (('' + pos3).indexOf('-') == -1) {
if (allowable) {
//if (allowed) {
//allowed=false;
//setTimeout(reseta, 2000);
divo.innerHTML+='<div id=div' + subdiv + ' style="position:absolute;top:' + pos4 + 'px;left:' + pos3 + 'px;width:126px;height:48px;background-color:transparent;"></div><style> #div' + subdiv + ' { background:' + lastcursor.split(') ')[0] + ') no-repeat; } </style>';
subdiv++;
//console.log('lastpos4=' + lastpos4 + ' and pos4=' + pos4);
//console.log('lastpos3=' + lastpos3 + ' and pos3=' + pos3);
lastpos3=pos3;
lastpos4=pos4;
//}
}
}
}
</script>
… with the “proof of concept” body_mouse_deepdive.html live run.
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