@tldraw/editor
Version:
tldraw infinite canvas SDK (editor).
248 lines (247 loc) • 9.08 kB
JavaScript
"use strict";
var __create = Object.create;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __getProtoOf = Object.getPrototypeOf;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
for (var name in all)
__defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
if (from && typeof from === "object" || typeof from === "function") {
for (let key of __getOwnPropNames(from))
if (!__hasOwnProp.call(to, key) && key !== except)
__defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
}
return to;
};
var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
// If the importer is in node compatibility mode or this is not an ESM
// file that has been converted to a CommonJS file using a Babel-
// compatible transform (i.e. "__esModule" has not been set), then set
// "default" to the CommonJS "module.exports" for node compatibility.
isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: true }) : target,
mod
));
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
var useGestureEvents_exports = {};
__export(useGestureEvents_exports, {
useGestureEvents: () => useGestureEvents
});
module.exports = __toCommonJS(useGestureEvents_exports);
var import_react = require("@use-gesture/react");
var React = __toESM(require("react"));
var import_Vec = require("../primitives/Vec");
var import_dom = require("../utils/dom");
var import_keyboard = require("../utils/keyboard");
var import_normalizeWheel = require("../utils/normalizeWheel");
var import_useEditor = require("./useEditor");
const useGesture = (0, import_react.createUseGesture)([import_react.wheelAction, import_react.pinchAction]);
let lastWheelTime = void 0;
const isWheelEndEvent = (time) => {
if (lastWheelTime === void 0) {
lastWheelTime = time;
return false;
}
if (time - lastWheelTime > 120 && time - lastWheelTime < 160) {
lastWheelTime = time;
return true;
}
lastWheelTime = time;
return false;
};
function useGestureEvents(ref) {
const editor = (0, import_useEditor.useEditor)();
const events = React.useMemo(() => {
let pinchState = "not sure";
const onWheel = ({ event }) => {
if (!editor.getInstanceState().isFocused) {
return;
}
pinchState = "not sure";
if (isWheelEndEvent(Date.now())) {
return;
}
const editingShapeId = editor.getEditingShapeId();
if (editingShapeId) {
const shape = editor.getShape(editingShapeId);
if (shape) {
const util = editor.getShapeUtil(shape);
if (util.canScroll(shape)) {
const bounds = editor.getShapePageBounds(editingShapeId);
if (bounds?.containsPoint(editor.inputs.currentPagePoint)) {
return;
}
}
}
}
(0, import_dom.preventDefault)(event);
(0, import_dom.stopEventPropagation)(event);
const delta = (0, import_normalizeWheel.normalizeWheel)(event);
if (delta.x === 0 && delta.y === 0) return;
const info = {
type: "wheel",
name: "wheel",
delta,
point: new import_Vec.Vec(event.clientX, event.clientY),
shiftKey: event.shiftKey,
altKey: event.altKey,
ctrlKey: event.metaKey || event.ctrlKey,
metaKey: event.metaKey,
accelKey: (0, import_keyboard.isAccelKey)(event)
};
editor.dispatch(info);
};
let initDistanceBetweenFingers = 1;
let initZoom = 1;
let currDistanceBetweenFingers = 0;
const initPointBetweenFingers = new import_Vec.Vec();
const prevPointBetweenFingers = new import_Vec.Vec();
const onPinchStart = (gesture) => {
const elm = ref.current;
pinchState = "not sure";
const { event, origin, da } = gesture;
if (event instanceof WheelEvent) return;
if (!(event.target === elm || elm?.contains(event.target))) return;
prevPointBetweenFingers.x = origin[0];
prevPointBetweenFingers.y = origin[1];
initPointBetweenFingers.x = origin[0];
initPointBetweenFingers.y = origin[1];
initDistanceBetweenFingers = da[0];
initZoom = editor.getZoomLevel();
editor.dispatch({
type: "pinch",
name: "pinch_start",
point: { x: origin[0], y: origin[1], z: editor.getZoomLevel() },
delta: { x: 0, y: 0 },
shiftKey: event.shiftKey,
altKey: event.altKey,
ctrlKey: event.metaKey || event.ctrlKey,
metaKey: event.metaKey,
accelKey: (0, import_keyboard.isAccelKey)(event)
});
};
const updatePinchState = (isSafariTrackpadPinch) => {
if (isSafariTrackpadPinch) {
pinchState = "zooming";
}
if (pinchState === "zooming") {
return;
}
const touchDistance = Math.abs(currDistanceBetweenFingers - initDistanceBetweenFingers);
const originDistance = import_Vec.Vec.Dist(initPointBetweenFingers, prevPointBetweenFingers);
switch (pinchState) {
case "not sure": {
if (touchDistance > 24) {
pinchState = "zooming";
} else if (originDistance > 16) {
pinchState = "panning";
}
break;
}
case "panning": {
if (touchDistance > 64) {
pinchState = "zooming";
}
break;
}
}
};
const onPinch = (gesture) => {
const elm = ref.current;
const { event, origin, offset, da } = gesture;
if (event instanceof WheelEvent) return;
if (!(event.target === elm || elm?.contains(event.target))) return;
const isSafariTrackpadPinch = gesture.type === "gesturechange" || gesture.type === "gestureend";
currDistanceBetweenFingers = da[0];
const dx = origin[0] - prevPointBetweenFingers.x;
const dy = origin[1] - prevPointBetweenFingers.y;
prevPointBetweenFingers.x = origin[0];
prevPointBetweenFingers.y = origin[1];
updatePinchState(isSafariTrackpadPinch);
switch (pinchState) {
case "zooming": {
const currZoom = offset[0] ** editor.getCameraOptions().zoomSpeed;
editor.dispatch({
type: "pinch",
name: "pinch",
point: { x: origin[0], y: origin[1], z: currZoom },
delta: { x: dx, y: dy },
shiftKey: event.shiftKey,
altKey: event.altKey,
ctrlKey: event.metaKey || event.ctrlKey,
metaKey: event.metaKey,
accelKey: (0, import_keyboard.isAccelKey)(event)
});
break;
}
case "panning": {
editor.dispatch({
type: "pinch",
name: "pinch",
point: { x: origin[0], y: origin[1], z: initZoom },
delta: { x: dx, y: dy },
shiftKey: event.shiftKey,
altKey: event.altKey,
ctrlKey: event.metaKey || event.ctrlKey,
metaKey: event.metaKey,
accelKey: (0, import_keyboard.isAccelKey)(event)
});
break;
}
}
};
const onPinchEnd = (gesture) => {
const elm = ref.current;
const { event, origin, offset } = gesture;
if (event instanceof WheelEvent) return;
if (!(event.target === elm || elm?.contains(event.target))) return;
const scale = offset[0] ** editor.getCameraOptions().zoomSpeed;
pinchState = "not sure";
editor.timers.requestAnimationFrame(() => {
editor.dispatch({
type: "pinch",
name: "pinch_end",
point: { x: origin[0], y: origin[1], z: scale },
delta: { x: origin[0], y: origin[1] },
shiftKey: event.shiftKey,
altKey: event.altKey,
ctrlKey: event.metaKey || event.ctrlKey,
metaKey: event.metaKey,
accelKey: (0, import_keyboard.isAccelKey)(event)
});
});
};
return {
onWheel,
onPinchStart,
onPinchEnd,
onPinch
};
}, [editor, ref]);
useGesture(events, {
target: ref,
eventOptions: { passive: false },
pinch: {
from: () => {
const { zoomSpeed } = editor.getCameraOptions();
const level = editor.getZoomLevel() ** (1 / zoomSpeed);
return [level, 0];
},
// Return the camera z to use when pinch starts
scaleBounds: () => {
const baseZoom = editor.getBaseZoom();
const { zoomSteps, zoomSpeed } = editor.getCameraOptions();
const zoomMin = zoomSteps[0] * baseZoom;
const zoomMax = zoomSteps[zoomSteps.length - 1] * baseZoom;
return {
max: zoomMax ** (1 / zoomSpeed),
min: zoomMin ** (1 / zoomSpeed)
};
}
}
});
}
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