@tldraw/editor/dist-esm/lib/hooks/useSelectionEvents.mjs.map

tldraw infinite canvas SDK (editor).

{
  "version": 3,
  "sources": ["../../../src/lib/hooks/useSelectionEvents.ts"],
  "sourcesContent": ["import { useMemo } from 'react'\nimport { RIGHT_MOUSE_BUTTON } from '../constants'\nimport { TLSelectionHandle } from '../editor/types/selection-types'\nimport {\n\tloopToHtmlElement,\n\treleasePointerCapture,\n\tsetPointerCapture,\n\tstopEventPropagation,\n} from '../utils/dom'\nimport { getPointerInfo } from '../utils/getPointerInfo'\nimport { useEditor } from './useEditor'\n\n/** @public */\nexport function useSelectionEvents(handle: TLSelectionHandle) {\n\tconst editor = useEditor()\n\n\tconst events = useMemo(\n\t\tfunction selectionEvents() {\n\t\t\tconst onPointerDown: React.PointerEventHandler = (e) => {\n\t\t\t\tif ((e as any).isKilled) return\n\n\t\t\t\tif (e.button === RIGHT_MOUSE_BUTTON) {\n\t\t\t\t\teditor.dispatch({\n\t\t\t\t\t\ttype: 'pointer',\n\t\t\t\t\t\ttarget: 'selection',\n\t\t\t\t\t\thandle,\n\t\t\t\t\t\tname: 'right_click',\n\t\t\t\t\t\t...getPointerInfo(e),\n\t\t\t\t\t})\n\t\t\t\t\treturn\n\t\t\t\t}\n\n\t\t\t\tif (e.button !== 0) return\n\n\t\t\t\t// Because the events are probably set on SVG elements,\n\t\t\t\t// we need to instead place pointer capture on the first HTML\n\t\t\t\t// element above the event's target; and set a listener to\n\t\t\t\t// remove pointer capture when the pointer is released.\n\n\t\t\t\tconst elm = loopToHtmlElement(e.currentTarget)\n\n\t\t\t\tfunction releaseCapture() {\n\t\t\t\t\telm.removeEventListener('pointerup', releaseCapture)\n\t\t\t\t\treleasePointerCapture(elm, e)\n\t\t\t\t}\n\n\t\t\t\tsetPointerCapture(elm, e)\n\t\t\t\telm.addEventListener('pointerup', releaseCapture)\n\n\t\t\t\teditor.dispatch({\n\t\t\t\t\tname: 'pointer_down',\n\t\t\t\t\ttype: 'pointer',\n\t\t\t\t\ttarget: 'selection',\n\t\t\t\t\thandle,\n\t\t\t\t\t...getPointerInfo(e),\n\t\t\t\t})\n\t\t\t\tstopEventPropagation(e)\n\t\t\t}\n\n\t\t\t// Track the last screen point\n\t\t\tlet lastX: number, lastY: number\n\n\t\t\tfunction onPointerMove(e: React.PointerEvent) {\n\t\t\t\tif ((e as any).isKilled) return\n\t\t\t\tif (e.button !== 0) return\n\t\t\t\tif (e.clientX === lastX && e.clientY === lastY) return\n\t\t\t\tlastX = e.clientX\n\t\t\t\tlastY = e.clientY\n\n\t\t\t\teditor.dispatch({\n\t\t\t\t\tname: 'pointer_move',\n\t\t\t\t\ttype: 'pointer',\n\t\t\t\t\ttarget: 'selection',\n\t\t\t\t\thandle,\n\t\t\t\t\t...getPointerInfo(e),\n\t\t\t\t})\n\t\t\t}\n\n\t\t\tconst onPointerUp: React.PointerEventHandler = (e) => {\n\t\t\t\tif ((e as any).isKilled) return\n\t\t\t\tif (e.button !== 0) return\n\n\t\t\t\teditor.dispatch({\n\t\t\t\t\tname: 'pointer_up',\n\t\t\t\t\ttype: 'pointer',\n\t\t\t\t\ttarget: 'selection',\n\t\t\t\t\thandle,\n\t\t\t\t\t...getPointerInfo(e),\n\t\t\t\t})\n\t\t\t}\n\n\t\t\treturn {\n\t\t\t\tonPointerDown,\n\t\t\t\tonPointerMove,\n\t\t\t\tonPointerUp,\n\t\t\t}\n\t\t},\n\t\t[editor, handle]\n\t)\n\n\treturn events\n}\n"],
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