42963b16ab
Summary: This is purely a cosmetic change but more accurately reflects the nature of how we send data from device to desktop. Ie its always an entire frame rather than subtrees. This helps with correctness great Both ios and android are like this and have been for a while. Reviewed By: lblasa Differential Revision: D45080088 fbshipit-source-id: 8f68047056c4825b0b1dd89f26c7fa462e2ecb1b
536 lines
15 KiB
TypeScript
536 lines
15 KiB
TypeScript
/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @format
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*/
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import React, {useCallback, useEffect, useMemo, useRef, useState} from 'react';
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import {Bounds, Coordinate, Id, NestedNode, Tag, UINode} from '../types';
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import {produce, styled, theme, usePlugin, useValue} from 'flipper-plugin';
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import {plugin} from '../index';
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import {head, isEqual, throttle} from 'lodash';
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import {Dropdown, Menu, Tooltip} from 'antd';
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import {UIDebuggerMenuItem} from './util/UIDebuggerMenuItem';
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import {useFilteredValue} from '../hooks/usefilteredValue';
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export const Visualization2D: React.FC<
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{
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width: number;
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nodes: Map<Id, UINode>;
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onSelectNode: (id?: Id) => void;
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modifierPressed: boolean;
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} & React.HTMLAttributes<HTMLDivElement>
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> = ({width, nodes, onSelectNode, modifierPressed}) => {
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const rootNodeRef = useRef<HTMLDivElement>();
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const instance = usePlugin(plugin);
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const snapshot = useValue(instance.snapshot);
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const snapshotNode = snapshot && nodes.get(snapshot.nodeId);
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const focusedNodeId = useValue(instance.uiState.focusedNode);
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const focusState = useMemo(() => {
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//use the snapshot node as root since we cant realistically visualise any node above this
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const rootNode = snapshot && toNestedNode(snapshot.nodeId, nodes);
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return rootNode && caclulateFocusState(rootNode, focusedNodeId);
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}, [snapshot, nodes, focusedNodeId]);
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useEffect(() => {
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const mouseListener = throttle((ev: MouseEvent) => {
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const domRect = rootNodeRef.current?.getBoundingClientRect();
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if (
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!focusState ||
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!domRect ||
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instance.uiState.isContextMenuOpen.get() ||
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!snapshotNode
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) {
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return;
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}
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const rawMouse = {x: ev.clientX, y: ev.clientY};
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if (!boundsContainsCoordinate(domRect, rawMouse)) {
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return;
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}
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//make the mouse coord relative to the dom rect of the visualizer
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const pxScaleFactor = calcPxScaleFactor(snapshotNode.bounds, width);
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const offsetMouse = offsetCoordinate(rawMouse, domRect);
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const scaledMouse = {
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x: offsetMouse.x * pxScaleFactor,
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y: offsetMouse.y * pxScaleFactor,
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};
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const hitNodes = hitTest(focusState.focusedRoot, scaledMouse).map(
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(node) => node.id,
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);
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if (
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hitNodes.length > 0 &&
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!isEqual(hitNodes, instance.uiState.hoveredNodes.get())
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) {
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instance.uiState.hoveredNodes.set(hitNodes);
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}
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}, MouseThrottle);
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window.addEventListener('mousemove', mouseListener);
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return () => {
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window.removeEventListener('mousemove', mouseListener);
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};
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}, [
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instance.uiState.hoveredNodes,
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focusState,
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nodes,
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instance.uiState.isContextMenuOpen,
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width,
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snapshotNode,
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]);
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if (!focusState || !snapshotNode) {
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return null;
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}
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const pxScaleFactor = calcPxScaleFactor(snapshotNode.bounds, width);
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return (
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<ContextMenu nodes={nodes}>
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<div
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//this div is to ensure that the size of the visualiser doesnt change when focusings on a subtree
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style={
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{
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[pxScaleFactorCssVar]: pxScaleFactor,
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width: toPx(focusState.actualRoot.bounds.width),
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height: toPx(focusState.actualRoot.bounds.height),
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} as React.CSSProperties
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}>
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<div
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ref={rootNodeRef as any}
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onMouseLeave={(e) => {
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e.stopPropagation();
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//the context menu triggers this callback but we dont want to remove hover effect
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if (!instance.uiState.isContextMenuOpen.get()) {
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instance.uiState.hoveredNodes.set([]);
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}
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}}
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style={{
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/**
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* This relative position is so the rootNode visualization 2DNode and outer border has a non static element to
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* position itself relative to.
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*
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* Subsequent Visualization2DNode are positioned relative to their parent as each one is position absolute
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* which despite the name acts are a reference point for absolute positioning...
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*
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* When focused the global offset of the focussed node is used to offset and size this 'root' node
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*/
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position: 'relative',
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marginLeft: toPx(focusState.focusedRootGlobalOffset.x),
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marginTop: toPx(focusState.focusedRootGlobalOffset.y),
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width: toPx(focusState.focusedRoot.bounds.width),
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height: toPx(focusState.focusedRoot.bounds.height),
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overflow: 'hidden',
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}}>
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{snapshotNode && (
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<img
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src={'data:image/png;base64,' + snapshot.data}
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style={{
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marginLeft: toPx(-focusState.focusedRootGlobalOffset.x),
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marginTop: toPx(-focusState.focusedRootGlobalOffset.y),
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width: toPx(snapshotNode.bounds.width),
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height: toPx(snapshotNode.bounds.height),
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}}
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/>
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)}
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<MemoedVisualizationNode2D
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node={focusState.focusedRoot}
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onSelectNode={onSelectNode}
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modifierPressed={modifierPressed}
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/>
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</div>
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</div>
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</ContextMenu>
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);
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};
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const MemoedVisualizationNode2D = React.memo(
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Visualization2DNode,
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(prev, next) => {
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return (
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prev.node === next.node && prev.modifierPressed === next.modifierPressed
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);
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},
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);
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function Visualization2DNode({
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node,
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onSelectNode,
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modifierPressed,
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}: {
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node: NestedNode;
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modifierPressed: boolean;
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onSelectNode: (id?: Id) => void;
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}) {
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const instance = usePlugin(plugin);
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const wasOrIsSelected = useCallback(
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(curValue?: Id, prevValue?: Id) =>
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curValue === node.id || prevValue === node.id,
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[node.id],
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);
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const selectedNode = useFilteredValue(
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instance.uiState.selectedNode,
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wasOrIsSelected,
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);
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const isSelected = selectedNode === node.id;
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const {isHovered, isLongHovered} = useHoverStates(node.id);
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const ref = useRef<HTMLDivElement>(null);
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let nestedChildren: NestedNode[];
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//if there is an active child don't draw the other children
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//this means we don't draw overlapping activities / tabs etc
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if (node.activeChildIdx && node.activeChildIdx < node.children.length) {
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nestedChildren = [node.children[node.activeChildIdx]];
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} else {
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nestedChildren = node.children;
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}
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// stop drawing children if hovered with the modifier so you
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// can see parent views without their children getting in the way
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if (isHovered && modifierPressed) {
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nestedChildren = [];
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}
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const children = nestedChildren.map((child) => (
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<MemoedVisualizationNode2D
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key={child.id}
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node={child}
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onSelectNode={onSelectNode}
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modifierPressed={modifierPressed}
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/>
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));
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const isHighlighted = useValue(instance.uiState.highlightedNodes).has(
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node.id,
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);
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return (
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<Tooltip
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visible={isLongHovered}
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placement="top"
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zIndex={100}
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trigger={[]}
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title={node.name}
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align={{
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offset: [0, 7],
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}}>
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<div
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role="button"
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tabIndex={0}
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ref={ref}
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style={{
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position: 'absolute',
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cursor: 'pointer',
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left: toPx(node.bounds.x),
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top: toPx(node.bounds.y),
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width: toPx(node.bounds.width),
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height: toPx(node.bounds.height),
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opacity: isSelected || isHighlighted ? 0.3 : 1,
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backgroundColor: isHighlighted
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? 'red'
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: isSelected
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? theme.selectionBackgroundColor
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: 'transparent',
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}}
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onClick={(e) => {
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e.stopPropagation();
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const hoveredNodes = instance.uiState.hoveredNodes.get();
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if (hoveredNodes[0] === selectedNode) {
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onSelectNode(undefined);
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} else {
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onSelectNode(hoveredNodes[0]);
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}
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}}>
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<NodeBorder hovered={isHovered} tags={node.tags}></NodeBorder>
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{children}
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</div>
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</Tooltip>
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);
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}
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function useHoverStates(nodeId: Id) {
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const instance = usePlugin(plugin);
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const [isHovered, setIsHovered] = useState(false);
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const [isLongHovered, setIsLongHovered] = useState(false);
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useEffect(() => {
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const listener = (newValue?: Id[], prevValue?: Id[]) => {
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//only change state if the prev or next hover state affect us, this avoids rerendering the whole tree for a hover
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//change
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if (head(prevValue) === nodeId || head(newValue) === nodeId) {
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const hovered = head(newValue) === nodeId;
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setIsHovered(hovered);
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if (hovered === true) {
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setTimeout(() => {
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const isStillHovered =
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head(instance.uiState.hoveredNodes.get()) === nodeId;
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if (isStillHovered) {
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setIsLongHovered(true);
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}
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}, longHoverDelay);
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} else {
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setIsLongHovered(false);
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}
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}
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};
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instance.uiState.hoveredNodes.subscribe(listener);
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return () => {
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instance.uiState.hoveredNodes.unsubscribe(listener);
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};
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}, [instance.uiState.hoveredNodes, nodeId]);
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return {
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isHovered,
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isLongHovered,
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};
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}
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const ContextMenu: React.FC<{nodes: Map<Id, UINode>}> = ({children}) => {
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const instance = usePlugin(plugin);
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const focusedNodeId = useValue(instance.uiState.focusedNode);
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const hoveredNodeId = head(useValue(instance.uiState.hoveredNodes));
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const nodes = useValue(instance.nodes);
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const hoveredNode = hoveredNodeId ? nodes.get(hoveredNodeId) : null;
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return (
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<Dropdown
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onVisibleChange={(open) => {
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instance.uiState.isContextMenuOpen.set(open);
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}}
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trigger={['contextMenu']}
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overlay={() => {
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return (
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<Menu>
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{hoveredNode != null && hoveredNode?.id !== focusedNodeId && (
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<UIDebuggerMenuItem
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key="focus"
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text={`Focus ${hoveredNode?.name}`}
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onClick={() => {
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instance.uiState.focusedNode.set(hoveredNode?.id);
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}}
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/>
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)}
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{focusedNodeId != null && (
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<UIDebuggerMenuItem
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key="remove-focus"
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text="Remove focus"
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onClick={() => {
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instance.uiState.focusedNode.set(undefined);
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}}
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/>
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)}
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</Menu>
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);
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}}>
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{children}
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</Dropdown>
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);
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};
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/**
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* this is the border that shows the green or blue line, it is implemented as a sibling to the
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* node itself so that it has the same size but the border doesnt affect the sizing of its children
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* as border is part of the box model
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*/
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const NodeBorder = styled.div<{tags: Tag[]; hovered: boolean}>((props) => ({
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position: 'absolute',
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top: 0,
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left: 0,
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bottom: 0,
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right: 0,
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boxSizing: 'border-box',
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borderWidth: props.hovered ? '2px' : '1px',
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borderStyle: 'solid',
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color: 'transparent',
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borderColor: props.tags.includes('Declarative')
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? 'green'
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: props.tags.includes('Native')
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? 'blue'
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: 'black',
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}));
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const longHoverDelay = 200;
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const pxScaleFactorCssVar = '--pxScaleFactor';
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const MouseThrottle = 32;
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function toPx(n: number) {
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return `calc(${n}px / var(${pxScaleFactorCssVar})`;
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}
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function toNestedNode(
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rootId: Id,
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nodes: Map<Id, UINode>,
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): NestedNode | undefined {
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function uiNodeToNestedNode(node: UINode): NestedNode {
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const nonNullChildren = node.children.filter(
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(childId) => nodes.get(childId) != null,
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);
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if (nonNullChildren.length !== node.children.length) {
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console.error(
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'Visualization2D.toNestedNode -> child is nullish!',
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node.children,
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nonNullChildren.map((childId) => {
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const child = nodes.get(childId);
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return child && uiNodeToNestedNode(child);
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}),
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);
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}
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const activeChildIdx = node.activeChild
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? nonNullChildren.indexOf(node.activeChild)
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: undefined;
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return {
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id: node.id,
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name: node.name,
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attributes: node.attributes,
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children: nonNullChildren.map((childId) =>
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uiNodeToNestedNode(nodes.get(childId)!),
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),
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bounds: node.bounds,
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tags: node.tags,
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activeChildIdx: activeChildIdx,
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};
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}
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const root = nodes.get(rootId);
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return root ? uiNodeToNestedNode(root) : undefined;
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}
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type FocusState = {
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actualRoot: NestedNode;
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focusedRoot: NestedNode;
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focusedRootGlobalOffset: Coordinate;
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};
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function caclulateFocusState(root: NestedNode, target?: Id): FocusState {
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const rootFocusState = {
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actualRoot: root,
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focusedRoot: root,
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focusedRootGlobalOffset: {x: 0, y: 0},
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};
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if (target == null) {
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return rootFocusState;
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}
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return (
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findNodeAndGlobalOffsetRec(root, {x: 0, y: 0}, root, target) ||
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rootFocusState
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);
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}
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function findNodeAndGlobalOffsetRec(
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node: NestedNode,
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globalOffset: Coordinate,
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root: NestedNode,
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target: Id,
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): FocusState | undefined {
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const nextOffset = {
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x: globalOffset.x + node.bounds.x,
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y: globalOffset.y + node.bounds.y,
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};
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if (node.id === target) {
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//since we have already applied the this nodes offset to the root node in the visualiser we zero it out here so it isn't counted twice
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const focusedRoot = produce(node, (draft) => {
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draft.bounds.x = 0;
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draft.bounds.y = 0;
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});
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return {
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actualRoot: root,
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focusedRoot,
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focusedRootGlobalOffset: nextOffset,
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};
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}
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for (const child of node.children) {
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const offset = findNodeAndGlobalOffsetRec(child, nextOffset, root, target);
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if (offset != null) {
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return offset;
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}
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}
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return undefined;
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}
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function hitTest(node: NestedNode, mouseCoordinate: Coordinate): NestedNode[] {
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const res: NestedNode[] = [];
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function hitTestRec(node: NestedNode, mouseCoordinate: Coordinate): boolean {
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const nodeBounds = node.bounds;
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const thisNodeHit = boundsContainsCoordinate(nodeBounds, mouseCoordinate);
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let children = node.children;
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if (node.activeChildIdx != null) {
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children = [node.children[node.activeChildIdx]];
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}
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const offsetMouseCoord = offsetCoordinate(mouseCoordinate, nodeBounds);
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let childHit = false;
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for (const child of children) {
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childHit = hitTestRec(child, offsetMouseCoord) || childHit;
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}
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const hit = thisNodeHit && !childHit;
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if (hit) {
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res.push(node);
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}
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return hit;
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}
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hitTestRec(node, mouseCoordinate);
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return res.sort((a, b) => {
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const areaA = a.bounds.height * a.bounds.width;
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const areaB = b.bounds.height * b.bounds.width;
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if (areaA > areaB) {
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return 1;
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} else if (areaA < areaB) {
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return -1;
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} else {
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return 0;
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}
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});
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}
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function boundsContainsCoordinate(bounds: Bounds, coordinate: Coordinate) {
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return (
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coordinate.x >= bounds.x &&
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coordinate.x <= bounds.x + bounds.width &&
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coordinate.y >= bounds.y &&
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coordinate.y <= bounds.y + bounds.height
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);
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}
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function offsetCoordinate(
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coordinate: Coordinate,
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offset: Coordinate,
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): Coordinate {
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return {
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x: coordinate.x - offset.x,
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y: coordinate.y - offset.y,
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};
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}
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function calcPxScaleFactor(snapshotBounds: Bounds, availableWidth: number) {
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return snapshotBounds.width / availableWidth;
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}
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