86 lines
1.9 KiB
JavaScript
86 lines
1.9 KiB
JavaScript
var dragables = document.getElementsByClassName("mydragable")
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for (var i = 0, ele; ele = dragables[i++]; ) {
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dragElement(ele);
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}
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for (var i = 0, ele; ele = dragables[i++]; ) {
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LoadElementPos(ele);
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}
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function dragElement(elmnt) {
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var pos1 = 0, pos2 = 0, pos3 = 0, pos4 = 0;
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elmnt.onmousedown = dragMouseDown;
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function dragMouseDown(e) {
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e = e || window.event;
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e.preventDefault();
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// get the mouse cursor position at startup:
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pos3 = e.clientX;
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pos4 = e.clientY;
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document.onmouseup = closeDragElement;
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// call a function whenever the cursor moves:
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document.onmousemove = elementDrag;
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}
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function elementDrag(e) {
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e = e || window.event;
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e.preventDefault();
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// calculate the new cursor position:
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pos1 = pos3 - e.clientX;
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pos2 = pos4 - e.clientY;
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pos3 = e.clientX;
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pos4 = e.clientY;
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// set the element's new position:
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var nx = elmnt.offsetLeft - pos1;
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if (nx > 1000) { nx = 1000; }
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if (nx < 0) { nx = 0; }
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var ny = elmnt.offsetTop - pos2;
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if (ny < 0) {
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ny = 0;
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}
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elmnt.style.left = nx + "px";
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elmnt.style.top = ny + "px";
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}
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function closeDragElement() {
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/* stop moving when mouse button is released:*/
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document.onmouseup = null;
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document.onmousemove = null;
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SaveElementPos(elmnt);
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}
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}
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function LoadElementPos(elment) {
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var cords = window.localStorage.getItem(elment.id);
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if (cords != null) {
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var cc = JSON.parse(cords);
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elment.style.left = cc.x;
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elment.style.top = cc.y;
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}
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}
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function SaveElementPos(elment) {
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var cc = { x: elment.style.left, y: elment.style.top }
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window.localStorage.setItem(elment.id,JSON.stringify(cc));
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}
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function clearMarkers() {
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var r = confirm("Clear all markers? (Warning, this cannot be undone.)");
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if (r == true) {
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var r2 = confirm("You sure? (Warning, this cannot be undone.)");
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if (r2 == true) {
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localStorage.clear();
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location.reload();
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}
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}
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}
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