-
Notifications
You must be signed in to change notification settings - Fork 46.4k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Add screenshots to Scheduling Profiler
- Loading branch information
Brian Vaughn
committed
Aug 13, 2021
1 parent
e4e8226
commit 241ab5c
Showing
9 changed files
with
375 additions
and
41 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
208 changes: 208 additions & 0 deletions
208
packages/react-devtools-scheduling-profiler/src/content-views/SnapshotsView.js
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,208 @@ | ||
| /** | ||
| * Copyright (c) Facebook, Inc. and its affiliates. | ||
| * | ||
| * This source code is licensed under the MIT license found in the | ||
| * LICENSE file in the root directory of this source tree. | ||
| * | ||
| * @flow | ||
| */ | ||
|
|
||
| import type {Snapshot, ReactProfilerData} from '../types'; | ||
| import type { | ||
| Interaction, | ||
| MouseMoveInteraction, | ||
| Rect, | ||
| Size, | ||
| Surface, | ||
| ViewRefs, | ||
| } from '../view-base'; | ||
|
|
||
| import {positioningScaleFactor, timestampToPosition} from './utils/positioning'; | ||
| import { | ||
| intersectionOfRects, | ||
| rectContainsPoint, | ||
| rectEqualToRect, | ||
| View, | ||
| } from '../view-base'; | ||
| import {BORDER_SIZE, COLORS, SNAPSHOT_HEIGHT} from './constants'; | ||
|
|
||
| type OnHover = (node: Snapshot | null) => void; | ||
|
|
||
| export class SnapshotsView extends View { | ||
| _intrinsicSize: Size; | ||
| _profilerData: ReactProfilerData; | ||
|
|
||
| onHover: OnHover | null = null; | ||
|
|
||
| constructor(surface: Surface, frame: Rect, profilerData: ReactProfilerData) { | ||
| super(surface, frame); | ||
|
|
||
| this._intrinsicSize = { | ||
| width: profilerData.duration, | ||
| height: SNAPSHOT_HEIGHT, | ||
| }; | ||
| this._profilerData = profilerData; | ||
| } | ||
|
|
||
| desiredSize() { | ||
| return this._intrinsicSize; | ||
| } | ||
|
|
||
| draw(context: CanvasRenderingContext2D) { | ||
| const {visibleArea} = this; | ||
|
|
||
| context.fillStyle = COLORS.BACKGROUND; | ||
| context.fillRect( | ||
| visibleArea.origin.x, | ||
| visibleArea.origin.y, | ||
| visibleArea.size.width, | ||
| visibleArea.size.height, | ||
| ); | ||
|
|
||
| const y = visibleArea.origin.y; | ||
|
|
||
| let x = visibleArea.origin.x; | ||
|
|
||
| // Rather than drawing each snapshot where it occured, | ||
| // draw them at fixed intervals and just show the nearest one. | ||
| while (x < visibleArea.origin.x + visibleArea.size.width) { | ||
| const snapshot = this._findClosestSnapshot(x); | ||
|
|
||
| const scaledHeight = SNAPSHOT_HEIGHT; | ||
| const scaledWidth = (snapshot.width * SNAPSHOT_HEIGHT) / snapshot.height; | ||
|
|
||
| const imageRect: Rect = { | ||
| origin: { | ||
| x, | ||
| y, | ||
| }, | ||
| size: {width: scaledWidth, height: scaledHeight}, | ||
| }; | ||
|
|
||
| // Lazily create and cache Image objects as we render a snapsho for the first time. | ||
| if (snapshot.image === null) { | ||
| const img = (snapshot.image = new Image()); | ||
| img.onload = () => { | ||
| this._drawSnapshotImage(context, snapshot, imageRect); | ||
| }; | ||
| img.src = snapshot.imageSource; | ||
| } else { | ||
| this._drawSnapshotImage(context, snapshot, imageRect); | ||
| } | ||
|
|
||
| x += scaledWidth + BORDER_SIZE; | ||
| } | ||
| } | ||
|
|
||
| handleInteraction(interaction: Interaction, viewRefs: ViewRefs) { | ||
| switch (interaction.type) { | ||
| case 'mousemove': | ||
| this._handleMouseMove(interaction, viewRefs); | ||
| break; | ||
| } | ||
| } | ||
|
|
||
| _drawSnapshotImage( | ||
| context: CanvasRenderingContext2D, | ||
| snapshot: Snapshot, | ||
| imageRect: Rect, | ||
| ) { | ||
| const visibleArea = this.visibleArea; | ||
|
|
||
| // Prevent snapshot from visibly overflowing its container when clipped. | ||
| const shouldClip = !rectEqualToRect(imageRect, visibleArea); | ||
| if (shouldClip) { | ||
| const clippedRect = intersectionOfRects(imageRect, visibleArea); | ||
| context.save(); | ||
| context.beginPath(); | ||
| context.rect( | ||
| clippedRect.origin.x, | ||
| clippedRect.origin.y, | ||
| clippedRect.size.width, | ||
| clippedRect.size.height, | ||
| ); | ||
| context.closePath(); | ||
| context.clip(); | ||
| } | ||
|
|
||
| // $FlowFixMe Flow doesn't know about the 9 argument variant of drawImage() | ||
| context.drawImage( | ||
| snapshot.image, | ||
|
|
||
| // Image coordinates | ||
| 0, | ||
| 0, | ||
|
|
||
| // Native image size | ||
| snapshot.width, | ||
| snapshot.height, | ||
|
|
||
| // Canvas coordinates | ||
| imageRect.origin.x, | ||
| imageRect.origin.y, | ||
|
|
||
| // Scaled image size | ||
| imageRect.size.width, | ||
| imageRect.size.height, | ||
| ); | ||
|
|
||
| if (shouldClip) { | ||
| context.restore(); | ||
| } | ||
| } | ||
|
|
||
| _findClosestSnapshot(x: number): Snapshot { | ||
| const frame = this.frame; | ||
| const scaleFactor = positioningScaleFactor( | ||
| this._intrinsicSize.width, | ||
| frame, | ||
| ); | ||
|
|
||
| const snapshots = this._profilerData.snapshots; | ||
|
|
||
| let startIndex = 0; | ||
| let stopIndex = snapshots.length - 1; | ||
| while (startIndex <= stopIndex) { | ||
| const currentIndex = Math.floor((startIndex + stopIndex) / 2); | ||
| const snapshot = snapshots[currentIndex]; | ||
| const {timestamp} = snapshot; | ||
|
|
||
| const snapshotX = Math.floor( | ||
| timestampToPosition(timestamp, scaleFactor, frame), | ||
| ); | ||
|
|
||
| if (x < snapshotX) { | ||
| stopIndex = currentIndex - 1; | ||
| } else { | ||
| startIndex = currentIndex + 1; | ||
| } | ||
| } | ||
|
|
||
| return snapshots[stopIndex]; | ||
| } | ||
|
|
||
| /** | ||
| * @private | ||
| */ | ||
| _handleMouseMove(interaction: MouseMoveInteraction, viewRefs: ViewRefs) { | ||
| const {onHover, visibleArea} = this; | ||
| if (!onHover) { | ||
| return; | ||
| } | ||
|
|
||
| const {location} = interaction.payload; | ||
| if (!rectContainsPoint(location, visibleArea)) { | ||
| onHover(null); | ||
| return; | ||
| } | ||
|
|
||
| const snapshot = this._findClosestSnapshot(location.x); | ||
| if (snapshot) { | ||
| this.currentCursor = 'context-menu'; | ||
| viewRefs.hoveredView = this; | ||
| onHover(snapshot); | ||
| } else { | ||
| onHover(null); | ||
| } | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.