Created
September 6, 2024 19:26
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Draggable action for Svelte
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| /* | |
| * Usage: | |
| * | |
| * <element use:draggable/> | |
| */ | |
| export function draggable(node) { | |
| const bounds = node.getBoundingClientRect() | |
| node.draggable = true | |
| node.style.position = 'absolute' | |
| node.style.left = `${bounds.left}px` | |
| node.style.top = `${bounds.top}px` | |
| let offset = null | |
| function dragstart(event) { | |
| const bounds = node.getBoundingClientRect() | |
| offset = { | |
| x: event.x - bounds.left, | |
| y: event.y - bounds.top | |
| } | |
| } | |
| function dragend(event) { | |
| event.preventDefault() | |
| node.style.left = `${event.x - offset.x}px` | |
| node.style.top = `${event.y - offset.y}px` | |
| offset = null | |
| } | |
| function dragover(event) { | |
| event.preventDefault() | |
| } | |
| node.addEventListener('dragstart', dragstart) | |
| node.addEventListener('dragend', dragend) | |
| node.addEventListener('dragover', dragover) | |
| return { | |
| destroy() { | |
| node.removeEventListener('dragstart', dragstart) | |
| node.removeEventListener('dragend', dragend) | |
| node.removeEventListener('dragover', dragover) | |
| } | |
| } | |
| } |
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