{
  "version": 3,
  "sources": ["../../../src/lib/hooks/useCanvasEvents.ts"],
  "sourcesContent": ["import { useValue } from '@tldraw/state-react'\nimport React, { useEffect, useMemo } from 'react'\nimport { RIGHT_MOUSE_BUTTON } from '../constants'\nimport { tlenv } from '../globals/environment'\nimport {\n\telementShouldCaptureKeys,\n\tpreventDefault,\n\treleasePointerCapture,\n\tsetPointerCapture,\n} from '../utils/dom'\nimport { getPointerInfo } from '../utils/getPointerInfo'\nimport { useEditor } from './useEditor'\n\nexport function useCanvasEvents() {\n\tconst editor = useEditor()\n\tconst ownerDocument = editor.getContainer().ownerDocument\n\tconst currentTool = useValue('current tool', () => editor.getCurrentTool(), [editor])\n\n\tconst events = useMemo(\n\t\tfunction canvasEvents() {\n\t\t\tfunction onPointerDown(e: React.PointerEvent) {\n\t\t\t\tif (editor.wasEventAlreadyHandled(e)) 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: 'canvas',\n\t\t\t\t\t\tname: 'right_click',\n\t\t\t\t\t\t...getPointerInfo(editor, 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 && e.button !== 1 && e.button !== 5) return\n\n\t\t\t\tsetPointerCapture(e.currentTarget, e)\n\n\t\t\t\teditor.dispatch({\n\t\t\t\t\ttype: 'pointer',\n\t\t\t\t\ttarget: 'canvas',\n\t\t\t\t\tname: 'pointer_down',\n\t\t\t\t\t...getPointerInfo(editor, e),\n\t\t\t\t})\n\t\t\t}\n\n\t\t\tfunction onPointerUp(e: React.PointerEvent) {\n\t\t\t\tif (editor.wasEventAlreadyHandled(e)) return\n\t\t\t\tif (e.button !== 0 && e.button !== 1 && e.button !== 2 && e.button !== 5) return\n\n\t\t\t\treleasePointerCapture(e.currentTarget, e)\n\n\t\t\t\teditor.dispatch({\n\t\t\t\t\ttype: 'pointer',\n\t\t\t\t\ttarget: 'canvas',\n\t\t\t\t\tname: 'pointer_up',\n\t\t\t\t\t...getPointerInfo(editor, e),\n\t\t\t\t})\n\t\t\t}\n\n\t\t\tfunction onPointerEnter(e: React.PointerEvent) {\n\t\t\t\tif (editor.wasEventAlreadyHandled(e)) return\n\t\t\t\tif (editor.getInstanceState().isPenMode && e.pointerType !== 'pen') return\n\t\t\t\tconst canHover = e.pointerType === 'mouse' || e.pointerType === 'pen'\n\t\t\t\teditor.updateInstanceState({ isHoveringCanvas: canHover ? true : null })\n\t\t\t}\n\n\t\t\tfunction onPointerLeave(e: React.PointerEvent) {\n\t\t\t\tif (editor.wasEventAlreadyHandled(e)) return\n\t\t\t\tif (editor.getInstanceState().isPenMode && e.pointerType !== 'pen') return\n\t\t\t\tconst canHover = e.pointerType === 'mouse' || e.pointerType === 'pen'\n\t\t\t\teditor.updateInstanceState({ isHoveringCanvas: canHover ? false : null })\n\t\t\t}\n\n\t\t\tfunction onTouchStart(e: React.TouchEvent) {\n\t\t\t\tif (editor.wasEventAlreadyHandled(e)) return\n\t\t\t\teditor.markEventAsHandled(e)\n\t\t\t\tpreventDefault(e)\n\t\t\t}\n\n\t\t\tfunction onTouchEnd(e: React.TouchEvent) {\n\t\t\t\tif (editor.wasEventAlreadyHandled(e)) return\n\t\t\t\teditor.markEventAsHandled(e)\n\t\t\t\t// check that e.target is an HTMLElement\n\t\t\t\tif (!(e.target instanceof HTMLElement)) return\n\n\t\t\t\tconst editingShapeId = editor.getEditingShapeId()\n\t\t\t\tif (\n\t\t\t\t\t// if the target is not inside the editing shape\n\t\t\t\t\t!(editingShapeId && e.target.closest(`[data-shape-id=\"${editingShapeId}\"]`)) &&\n\t\t\t\t\t// and the target is not an clickable element\n\t\t\t\t\te.target.tagName !== 'A' &&\n\t\t\t\t\t// and the target is not an editable element\n\t\t\t\t\t!elementShouldCaptureKeys(e.target, false)\n\t\t\t\t) {\n\t\t\t\t\tpreventDefault(e)\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tfunction onDragOver(e: React.DragEvent<Element>) {\n\t\t\t\tif (editor.wasEventAlreadyHandled(e)) return\n\t\t\t\tpreventDefault(e)\n\t\t\t}\n\n\t\t\tasync function onDrop(e: React.DragEvent<Element>) {\n\t\t\t\tif (editor.wasEventAlreadyHandled(e)) return\n\t\t\t\tpreventDefault(e)\n\t\t\t\te.stopPropagation()\n\n\t\t\t\tconst pagePoint = editor.screenToPage({ x: e.clientX, y: e.clientY })\n\n\t\t\t\t// Call the custom onDropOnCanvas callback if provided\n\t\t\t\tif (editor.options.experimental__onDropOnCanvas) {\n\t\t\t\t\tconst handled = editor.options.experimental__onDropOnCanvas({\n\t\t\t\t\t\tpoint: pagePoint,\n\t\t\t\t\t\tevent: e,\n\t\t\t\t\t})\n\t\t\t\t\tif (handled) return\n\t\t\t\t}\n\n\t\t\t\tif (e.dataTransfer?.files?.length) {\n\t\t\t\t\tconst files = Array.from(e.dataTransfer.files)\n\n\t\t\t\t\tawait editor.putExternalContent({\n\t\t\t\t\t\ttype: 'files',\n\t\t\t\t\t\tfiles,\n\t\t\t\t\t\tpoint: pagePoint,\n\t\t\t\t\t})\n\t\t\t\t\treturn\n\t\t\t\t}\n\n\t\t\t\tconst url = e.dataTransfer.getData('url')\n\t\t\t\tif (url) {\n\t\t\t\t\tawait editor.putExternalContent({\n\t\t\t\t\t\ttype: 'url',\n\t\t\t\t\t\turl,\n\t\t\t\t\t\tpoint: pagePoint,\n\t\t\t\t\t})\n\t\t\t\t\treturn\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tfunction onClick(e: React.MouseEvent) {\n\t\t\t\tif (editor.wasEventAlreadyHandled(e)) return\n\t\t\t\te.stopPropagation()\n\t\t\t}\n\n\t\t\treturn {\n\t\t\t\tonPointerDown,\n\t\t\t\tonPointerUp,\n\t\t\t\tonPointerEnter,\n\t\t\t\tonPointerLeave,\n\t\t\t\tonDragOver,\n\t\t\t\tonDrop,\n\t\t\t\tonTouchStart,\n\t\t\t\tonTouchEnd,\n\t\t\t\tonClick,\n\t\t\t}\n\t\t},\n\t\t[editor]\n\t)\n\n\t// onPointerMove is special: where we're only interested in the other events when they're\n\t// happening _on_ the canvas (as opposed to outside of it, or on UI floating over it), we want\n\t// the pointer position to be up to date regardless of whether it's over the tldraw canvas or\n\t// not. So instead of returning a listener to be attached to the canvas, we directly attach a\n\t// listener to the whole document instead.\n\tuseEffect(() => {\n\t\tlet lastX: number, lastY: number\n\n\t\tfunction onPointerMove(e: PointerEvent) {\n\t\t\tif (editor.wasEventAlreadyHandled(e)) return\n\t\t\teditor.markEventAsHandled(e)\n\n\t\t\tif (e.clientX === lastX && e.clientY === lastY) return\n\t\t\tlastX = e.clientX\n\t\t\tlastY = e.clientY\n\n\t\t\t// For tools that benefit from a higher fidelity of events,\n\t\t\t// we dispatch the coalesced events.\n\t\t\t// N.B. Sometimes getCoalescedEvents isn't present on iOS, ugh.\n\t\t\t// Specifically, in local mode (non-https) mode, iOS does not `useCoalescedEvents`\n\t\t\t// so it appears like the ink is working locally, when really it's just that `useCoalescedEvents`\n\t\t\t// is disabled. The intent here is to have `useCoalescedEvents` disabled for iOS.\n\t\t\tconst events =\n\t\t\t\t!tlenv.isIos && currentTool.useCoalescedEvents && e.getCoalescedEvents\n\t\t\t\t\t? e.getCoalescedEvents()\n\t\t\t\t\t: [e]\n\n\t\t\tfor (const singleEvent of events) {\n\t\t\t\teditor.dispatch({\n\t\t\t\t\ttype: 'pointer',\n\t\t\t\t\ttarget: 'canvas',\n\t\t\t\t\tname: 'pointer_move',\n\t\t\t\t\t...getPointerInfo(editor, singleEvent),\n\t\t\t\t})\n\t\t\t}\n\t\t}\n\n\t\townerDocument.body.addEventListener('pointermove', onPointerMove)\n\t\treturn () => {\n\t\t\townerDocument.body.removeEventListener('pointermove', onPointerMove)\n\t\t}\n\t}, [editor, currentTool, ownerDocument])\n\n\treturn events\n}\n"],
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  "names": ["events"]
}