@tldraw/editor/dist-esm/lib/utils/normalizeWheel.mjs.map

tldraw infinite canvas SDK (editor).

{
  "version": 3,
  "sources": ["../../../src/lib/utils/normalizeWheel.ts"],
  "sourcesContent": ["// Reasonable defaults\nconst MAX_ZOOM_STEP = 10\nconst IS_DARWIN = /Mac|iPod|iPhone|iPad/.test(\n\t// eslint-disable-next-line @typescript-eslint/no-deprecated\n\ttypeof window === 'undefined' ? 'node' : window.navigator.platform\n)\n\n// Adapted from https://stackoverflow.com/a/13650579\n/** @internal */\nexport function normalizeWheel(event: WheelEvent | React.WheelEvent<HTMLElement>) {\n\tlet { deltaY, deltaX } = event\n\tlet deltaZ = 0\n\n\t// wheeling\n\tif (event.ctrlKey || event.altKey || event.metaKey) {\n\t\tdeltaZ = (Math.abs(deltaY) > MAX_ZOOM_STEP ? MAX_ZOOM_STEP * Math.sign(deltaY) : deltaY) / 100\n\t} else {\n\t\tif (event.shiftKey && !IS_DARWIN) {\n\t\t\tdeltaX = deltaY\n\t\t\tdeltaY = 0\n\t\t}\n\t}\n\n\treturn { x: -deltaX, y: -deltaY, z: -deltaZ }\n}\n"],
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