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

tldraw infinite canvas SDK (editor).

{
  "version": 3,
  "sources": ["../../../src/lib/hooks/useCanvasEvents.ts"],
  "sourcesContent": ["import { useValue } from '@tldraw/state-react'\nimport React, { useMemo } from 'react'\nimport { RIGHT_MOUSE_BUTTON } from '../constants'\nimport {\n\tpreventDefault,\n\treleasePointerCapture,\n\tsetPointerCapture,\n\tstopEventPropagation,\n} from '../utils/dom'\nimport { getPointerInfo } from '../utils/getPointerInfo'\nimport { useEditor } from './useEditor'\n\nexport function useCanvasEvents() {\n\tconst editor = useEditor()\n\tconst currentTool = useValue('current tool', () => editor.getCurrentTool(), [editor])\n\n\tconst events = useMemo(\n\t\tfunction canvasEvents() {\n\t\t\t// Track the last screen point\n\t\t\tlet lastX: number, lastY: number\n\n\t\t\tfunction onPointerDown(e: React.PointerEvent) {\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: 'canvas',\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 && 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(e),\n\t\t\t\t})\n\t\t\t}\n\n\t\t\tfunction onPointerMove(e: React.PointerEvent) {\n\t\t\t\tif ((e as any).isKilled) return\n\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\t// For tools that benefit from a higher fidelity of events,\n\t\t\t\t// we dispatch the coalesced events.\n\t\t\t\t// N.B. Sometimes getCoalescedEvents isn't present on iOS, ugh.\n\t\t\t\tconst events =\n\t\t\t\t\tcurrentTool.useCoalescedEvents && e.nativeEvent.getCoalescedEvents\n\t\t\t\t\t\t? e.nativeEvent.getCoalescedEvents()\n\t\t\t\t\t\t: [e]\n\t\t\t\tfor (const singleEvent of events) {\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: 'pointer_move',\n\t\t\t\t\t\t...getPointerInfo(singleEvent),\n\t\t\t\t\t})\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tfunction onPointerUp(e: React.PointerEvent) {\n\t\t\t\tif ((e as any).isKilled) return\n\t\t\t\tif (e.button !== 0 && e.button !== 1 && e.button !== 2 && e.button !== 5) return\n\t\t\t\tlastX = e.clientX\n\t\t\t\tlastY = e.clientY\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(e),\n\t\t\t\t})\n\t\t\t}\n\n\t\t\tfunction onPointerEnter(e: React.PointerEvent) {\n\t\t\t\tif ((e as any).isKilled) 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 ((e as any).isKilled) 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\t;(e as any).isKilled = true\n\t\t\t\tpreventDefault(e)\n\t\t\t}\n\n\t\t\tfunction onTouchEnd(e: React.TouchEvent) {\n\t\t\t\t;(e as any).isKilled = true\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\tif (\n\t\t\t\t\te.target.tagName !== 'A' &&\n\t\t\t\t\te.target.tagName !== 'TEXTAREA' &&\n\t\t\t\t\t!e.target.isContentEditable &&\n\t\t\t\t\t// When in EditingShape state, we are actually clicking on a 'DIV'\n\t\t\t\t\t// not A/TEXTAREA/contenteditable element yet. So, to preserve cursor position\n\t\t\t\t\t// for edit mode on mobile we need to not preventDefault.\n\t\t\t\t\t// TODO: Find out if we still need this preventDefault in general though.\n\t\t\t\t\t!(editor.getEditingShape() && e.target.className.includes('tl-text-content'))\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\tpreventDefault(e)\n\t\t\t}\n\n\t\t\tasync function onDrop(e: React.DragEvent<Element>) {\n\t\t\t\tpreventDefault(e)\n\t\t\t\tstopEventPropagation(e)\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: editor.screenToPage({ x: e.clientX, y: e.clientY }),\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: editor.screenToPage({ x: e.clientX, y: e.clientY }),\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\tstopEventPropagation(e)\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\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, currentTool]\n\t)\n\n\treturn events\n}\n"],
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  "names": ["events"]
}