Created
November 27, 2013 10:38
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Using Snap.svg to create a draggable box that snaps to grid.
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script src="//cdn.jsdelivr.net/snap.svg/0.1.0/snap.svg-min.js"></script> | |
| <script> | |
| var s = Snap("#svg"); | |
| var gridSize = 50; | |
| var orig = { | |
| x: 0, | |
| y: 0 | |
| }; | |
| var block = s.rect(100, 100, 100, 100, 20, 20); | |
| block.attr({ | |
| fill: "rgb(236, 240, 241)", | |
| stroke: "#1f2c39", | |
| strokeWidth: 3 | |
| }); | |
| block.drag( | |
| function (dx, dy, x, y, e) { | |
| var xSnap = Snap.snapTo(gridSize, orig.x + dx, 100000000); | |
| var ySnap = Snap.snapTo(gridSize, orig.y + dy, 100000000); | |
| this.attr({ | |
| x: xSnap, | |
| y: ySnap | |
| }); | |
| }, | |
| function (x, y, e) { | |
| orig.x = e.toElement.x.baseVal.value; | |
| orig.y = e.toElement.y.baseVal.value; | |
| }); | |
| </script> | |
| </head> | |
| <body> | |
| <svg id="svg" version="1.1" xmlns="http://www.w3.org/2000/svg"></svg> | |
| </body> | |
| </html> |
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@richban change lines 32 and 33 to:
orig.x = e.target.x.baseVal.value; orig.y = e.target.y.baseVal.value;