I am trying to build an interface that allows both resize/drag and rotate on some element and to acheive this I am using interact.js javascript library.
I have my interact functions working:
interact('.resize-drag-ratio')
.draggable({
onmove: window.dragMoveListener
})
.resizable({
preserveAspectRatio: true,
edges: { left: true, right: true, bottom: true, top: true }
})
.on('resizemove', function (event) {
var target = event.target,
x = (parseFloat(target.getAttribute('data-x')) || 0),
y = (parseFloat(target.getAttribute('data-y')) || 0);
var min_size = 35;
if(event.rect.width>min_size){
// update the element's style
target.style.width = event.rect.width + 'px';
target.style.height = event.rect.height + 'px';
// translate when resizing from top or left edges
x += event.deltaRect.left;
y += event.deltaRect.top;
target.style.webkitTransform = target.style.transform =
'translate(' + x + 'px,' + y + 'px)';
target.setAttribute('data-x', x);
target.setAttribute('data-y', y);
}
});
and drag-rotate that allows for rotation
interact('.drag-rotate')
.draggable({
onstart: function (event) {
const element = event.target;
const rect = element.getBoundingClientRect();
// store the center as the element has css `transform-origin: center center`
element.dataset.centerX = rect.left + rect.width / 2;
element.dataset.centerY = rect.top + rect.height / 2;
console.log("element.dataset.centerX: "+element.dataset.centerX);
console.log("element.dataset.centerY: "+element.dataset.centerY);
// get the angle of the element when the drag starts
element.dataset.angle = getDragAngle(event);
},
onmove: function (event) {
var element = event.target;
var center = {
x: 300,
y: 300,
};
console.log("element.dataset.centerX: "+element.dataset.centerX);
console.log("element.dataset.centerY: "+element.dataset.centerY);
var angle = getDragAngle(event);
// update transform style on dragmove
element.style.transform = 'rotate(' + angle + 'rad' + ')';
},
onend: function (event) {
const element = event.target;
// save the angle on dragend
element.dataset.angle = getDragAngle(event);
},
})
The two classes get switched using jquery thus turning drag into rotaion and vice versa . My problem is that object location and rotation angle do not stay as placed and I am not sure how to fix that.
After i drag an element to some position and press the rotate button, one i start rotating the element it moves to top:0px left:0px and does not stay at its dragged position.
you can see the full working code right here: https://codepen.io/yaary-vidanpeled/pen/ZZwGmE
from drag and drop with interact.js
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