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| <!DOCTYPE html>
<html lang="fr">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>drag&drop</title>
<style>
body{
margin: 0;
padding: 0;
overflow: hidden;
}
#container{
display: grid;
place-items: center;
height: 100vh;
}
</style>
</head>
<body>
<div id="container">
<img src="picture.jpg" id="image">
</div>
<script>
let im= document.getElementById('image');
let clientX0,
clientY0,
ClientX,
clientY,
x0=0,
y0=0,
x,
y;
function handlePointerMove(e){
e.preventDefault();
clientX = e.clientX;
clientY = e.clientY;
x=clientX-clientX0+x0;
y=clientY-clientY0+y0;
e.currentTarget.style.transform = `translate(${x}px, ${y}px)`;
}
function handlePointerUp(e){
e.preventDefault();
im.style.cursor='grab';
im.removeEventListener('pointermove',handlePointerMove);
window.removeEventListener('pointerup',handlePointerUp);
x0=x;
y0=y;
}
function handlePointerDown(e){
let target=e.currentTarget;
e.preventDefault();
target.style.cursor='grabbing';
clientX0 = e.clientX;
clientY0 = e.clientY;
target.addEventListener('pointermove',handlePointerMove);
window.addEventListener('pointerup',handlePointerUp);
}
im.addEventListener('pointerdown',handlePointerDown);
</script>
</body>
</html> |
Quels FrameWorks pour une application Drag&Drop ?
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