Auto will-change (#2700)

* Removing translateZ(0) * Fixing tests * Debug * Defining expected behaviour * Adding tests * Fixing tests * Latest * Latest * Latest * Allowing willChange to be manullly set by string * Fixing tests * Latest * Updating changes * Removing logs: * Latest * Latest * Latest * Fixing tests * Update * Increasing test timeout * Fixing failing tesst * Removing * Fixing tests * Improving comments * Updating types * Fixing types * Adding will-change events * Removing event listener approach * Adding comment * Updating * Upping bundlesize * Speeding up code * Adding tests for static mode
framer · Jul 10, 2024 · 4341943 · 4341943
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diff --git a/dev/react/src/examples/Animation-animate.tsx b/dev/react/src/examples/Animation-animate.tsx
@@ -1,6 +1,5 @@
+import { motion } from "framer-motion"
 import { useEffect, useState } from "react"
-import { motion, motionValue, useAnimate } from "framer-motion"
-import { frame } from "framer-motion"
 
 /**
  * An example of the tween transition type
@@ -11,56 +10,18 @@ const style = {
     height: 100,
     background: "white",
 }
-
-const Child = ({ setState }: any) => {
-    const [width] = useState(100)
-    const [target, setTarget] = useState(0)
-    const transition = {
-        duration: 10,
-    }
-
-    const [scope, animate] = useAnimate()
-
+export const App = () => {
+    const [state, setState] = useState(false)
     useEffect(() => {
-        const controls = animate([
-            [
-                "div",
-                { x: 500, opacity: 0 },
-                { type: "spring", duration: 1, bounce: 0 },
-            ],
-        ])
-
-        controls.then(() => {
-            controls.play()
-        })
-
-        return () => controls.stop()
-    }, [target])
-
+        setTimeout(() => {
+            setState(true)
+        }, 300)
+    })
     return (
-        <div ref={scope}>
-            <motion.div
-                id="box"
-                style={{
-                    x: target,
-                    ...style,
-                    width: motionValue(width),
-                    y: width / 10,
-                }}
-                onClick={() => {
-                    setTarget(target + 100)
-                    // setWidth(width + 100)
-                }}
-                initial={{ borderRadius: 10 }}
-            />
-            {/* <div style={style} onClick={() => setState(false)} /> */}
-        </div>
+        <motion.div
+            animate={{ x: state ? 0 : 100 }}
+            transition={{ duration: 1 }}
+            style={style}
+        />
     )
-    return
-}
-
-export const App = () => {
-    const [state, setState] = useState(true)
-
-    return state && <Child setState={setState} />
 }
diff --git a/dev/react/src/examples/Animation-stagger-custom.tsx b/dev/react/src/examples/Animation-stagger-custom.tsx
@@ -1,4 +1,4 @@
-import { useState, useEffect } from "react";
+import { useState, useEffect } from "react"
 import { useAnimation, distance2D, wrap } from "framer-motion"
 import { motion } from "framer-motion"
 

diff --git a/packages/framer-motion/package.json b/packages/framer-motion/package.json
@@ -85,23 +85,23 @@
     "bundlesize": [
         {
             "path": "./dist/size-rollup-motion.js",
-            "maxSize": "33.45 kB"
+            "maxSize": "33.72 kB"
         },
         {
             "path": "./dist/size-rollup-m.js",
-            "maxSize": "5.85 kB"
+            "maxSize": "6 kB"
         },
         {
             "path": "./dist/size-rollup-dom-animation.js",
-            "maxSize": "16.88 kB"
+            "maxSize": "17 kB"
         },
         {
             "path": "./dist/size-rollup-dom-max.js",
-            "maxSize": "28.6 kB"
+            "maxSize": "28.8 kB"
         },
         {
             "path": "./dist/size-rollup-animate.js",
-            "maxSize": "17.86 kB"
+            "maxSize": "18 kB"
         }
     ],
     "gitHead": "3a6a6e20deb697df3a20201607a48150e2d77255"

diff --git a/packages/framer-motion/src/animation/__tests__/animate.test.tsx b/packages/framer-motion/src/animation/__tests__/animate.test.tsx
@@ -31,9 +31,7 @@ describe("animate", () => {
 
         const [value, element] = await promise
         expect(value.get()).toBe(200)
-        expect(element).toHaveStyle(
-            "transform: translateX(200px) translateZ(0)"
-        )
+        expect(element).toHaveStyle("transform: translateX(200px)")
     })
 
     test("correctly animates normal values", async () => {

diff --git a/packages/framer-motion/src/animation/__tests__/css-variables.test.tsx b/packages/framer-motion/src/animation/__tests__/css-variables.test.tsx
@@ -102,8 +102,16 @@ describe("css variables", () => {
 
         const results = await promise
         expect(results).toEqual([
-            { "--a": "20px", "--color": "rgba(0, 0, 0, 1)" },
-            { "--a": "20px", "--color": "rgba(0, 0, 0, 1)" },
+            {
+                "--a": "20px",
+                "--color": "rgba(0, 0, 0, 1)",
+                willChange: "auto",
+            },
+            {
+                "--a": "20px",
+                "--color": "rgba(0, 0, 0, 1)",
+                willChange: "auto",
+            },
         ])
     })
 

diff --git a/packages/framer-motion/src/animation/__tests__/index.test.tsx b/packages/framer-motion/src/animation/__tests__/index.test.tsx
@@ -233,7 +233,7 @@ describe("useAnimation", () => {
         }
         const { container } = render(<Component />)
         expect(container.firstChild as HTMLElement).toHaveStyle(
-            "transform: translateX(10px) translateZ(0); background: rgb(255, 255, 255)"
+            "transform: translateX(10px); background: rgb(255, 255, 255)"
         )
     })
 

diff --git a/packages/framer-motion/src/animation/animators/AcceleratedAnimation.ts b/packages/framer-motion/src/animation/animators/AcceleratedAnimation.ts
@@ -15,6 +15,7 @@ import {
     ValueAnimationOptionsWithDefaults,
 } from "./BaseAnimation"
 import { MainThreadAnimation } from "./MainThreadAnimation"
+import { acceleratedValues } from "./utils/accelerated-values"
 import { animateStyle } from "./waapi"
 import { isWaapiSupportedEasing } from "./waapi/easing"
 import { getFinalKeyframe } from "./waapi/utils/get-final-keyframe"
@@ -23,19 +24,6 @@ const supportsWaapi = memo(() =>
     Object.hasOwnProperty.call(Element.prototype, "animate")
 )
 
-/**
- * A list of values that can be hardware-accelerated.
- */
-const acceleratedValues = new Set<string>([
-    "opacity",
-    "clipPath",
-    "filter",
-    "transform",
-    // TODO: Can be accelerated but currently disabled until https://issues.chromium.org/issues/41491098 is resolved
-    // or until we implement support for linear() easing.
-    // "background-color"
-])
-
 /**
  * 10ms is chosen here as it strikes a balance between smooth
  * results (more than one keyframe per frame at 60fps) and
@@ -372,6 +360,9 @@ export class AcceleratedAnimation<
             )
         }
 
+        const { onStop } = this.options
+        onStop && onStop()
+
         this.cancel()
     }
 

diff --git a/packages/framer-motion/src/animation/animators/MainThreadAnimation.ts b/packages/framer-motion/src/animation/animators/MainThreadAnimation.ts
@@ -489,7 +489,6 @@ export class MainThreadAnimation<
         this.resolver.cancel()
         this.isStopped = true
         if (this.state === "idle") return
-
         this.teardown()
         const { onStop } = this.options
         onStop && onStop()

diff --git a/packages/framer-motion/src/animation/animators/utils/accelerated-values.ts b/packages/framer-motion/src/animation/animators/utils/accelerated-values.ts
@@ -0,0 +1,12 @@
+/**
+ * A list of values that can be hardware-accelerated.
+ */
+export const acceleratedValues = new Set<string>([
+    "opacity",
+    "clipPath",
+    "filter",
+    "transform",
+    // TODO: Can be accelerated but currently disabled until https://issues.chromium.org/issues/41491098 is resolved
+    // or until we implement support for linear() easing.
+    // "background-color"
+])
diff --git a/packages/framer-motion/src/animation/interfaces/motion-value.ts b/packages/framer-motion/src/animation/interfaces/motion-value.ts
@@ -21,7 +21,14 @@ export const animateMotionValue =
         target: V | UnresolvedKeyframes<V>,
         transition: Transition & { elapsed?: number } = {},
         element?: VisualElement<any>,
-        isHandoff?: boolean
+        isHandoff?: boolean,
+        /**
+         * Currently used to remove values from will-change when an animation ends.
+         * Preferably this would be handled by event listeners on the MotionValue
+         * but these aren't consistent enough yet when considering the different ways
+         * an animation can be cancelled.
+         */
+        onEnd?: VoidFunction
     ): StartAnimation =>
     (onComplete): AnimationPlaybackControls => {
         const valueTransition = getValueTransition(transition, name) || {}
@@ -53,7 +60,9 @@ export const animateMotionValue =
             onComplete: () => {
                 onComplete()
                 valueTransition.onComplete && valueTransition.onComplete()
+                onEnd && onEnd()
             },
+            onStop: onEnd,
             name,
             motionValue: value,
             element: isHandoff ? undefined : element,

diff --git a/packages/framer-motion/src/animation/interfaces/visual-element-target.ts b/packages/framer-motion/src/animation/interfaces/visual-element-target.ts
@@ -4,12 +4,12 @@ import type { VisualElement } from "../../render/VisualElement"
 import type { TargetAndTransition } from "../../types"
 import type { VisualElementAnimationOptions } from "./types"
 import { animateMotionValue } from "./motion-value"
-import { isWillChangeMotionValue } from "../../value/use-will-change/is"
 import { setTarget } from "../../render/utils/setters"
 import { AnimationPlaybackControls } from "../types"
 import { getValueTransition } from "../utils/transitions"
 import { frame } from "../../frameloop"
 import { getOptimisedAppearId } from "../optimized-appear/get-appear-id"
+import { addValueToWillChange } from "../../value/use-will-change/add-will-change"
 
 /**
  * Decide whether we should block this animation. Previously, we achieved this
@@ -39,8 +39,6 @@ export function animateTarget(
         ...target
     } = targetAndTransition
 
-    const willChange = visualElement.getValue("willChange")
-
     if (transitionOverride) transition = transitionOverride
 
     const animations: AnimationPlaybackControls[] = []
@@ -103,18 +101,14 @@ export function animateTarget(
                     ? { type: false }
                     : valueTransition,
                 visualElement,
-                isHandoff
+                isHandoff,
+                addValueToWillChange(visualElement, key)
             )
         )
 
         const animation = value.animation
 
         if (animation) {
-            if (isWillChangeMotionValue(willChange)) {
-                willChange.add(key)
-                animation.then(() => willChange.remove(key))
-            }
-
             animations.push(animation)
         }
     }

diff --git a/packages/framer-motion/src/animation/utils/create-visual-element.ts b/packages/framer-motion/src/animation/utils/create-visual-element.ts
@@ -19,12 +19,8 @@ export function createVisualElement(element: HTMLElement | SVGElement) {
         },
     }
     const node = isSVGElement(element)
-        ? new SVGVisualElement(options, {
-              enableHardwareAcceleration: false,
-          })
-        : new HTMLVisualElement(options, {
-              enableHardwareAcceleration: true,
-          })
+        ? new SVGVisualElement(options)
+        : new HTMLVisualElement(options)
 
     node.mount(element as any)
 

diff --git a/packages/framer-motion/src/components/AnimatePresence/__tests__/AnimatePresence.test.tsx b/packages/framer-motion/src/components/AnimatePresence/__tests__/AnimatePresence.test.tsx
@@ -1,5 +1,5 @@
 import { render } from "../../../../jest.setup"
-import { createRef } from "react";
+import { createRef } from "react"
 import { act } from "react-dom/test-utils"
 import {
     AnimatePresence,
@@ -68,9 +68,7 @@ describe("AnimatePresence", () => {
         })
 
         const element = await promise
-        expect(element).toHaveStyle(
-            "transform: translateX(100px) translateZ(0)"
-        )
+        expect(element).toHaveStyle("transform: translateX(100px)")
     })
 
     test("Animates out a component when its removed", async () => {
@@ -646,9 +644,7 @@ describe("AnimatePresence with custom components", () => {
         })
 
         const element = await promise
-        expect(element).toHaveStyle(
-            "transform: translateX(100px) translateZ(0)"
-        )
+        expect(element).toHaveStyle("transform: translateX(100px)")
     })
 
     test("Animation controls children of initial={false} don't throw`", async () => {

diff --git a/packages/framer-motion/src/components/Reorder/__tests__/server.ssr.test.tsx b/packages/framer-motion/src/components/Reorder/__tests__/server.ssr.test.tsx
@@ -13,7 +13,7 @@ describe("Reorder", () => {
         const staticMarkup = renderToStaticMarkup(<Component />)
         const string = renderToString(<Component />)
 
-        const expectedMarkup = `<article><main style="z-index:unset;transform:none;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none;touch-action:pan-x" draggable="false"></main></article>`
+        const expectedMarkup = `<article><main style="z-index:unset;will-change:transform;transform:none;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none;touch-action:pan-x" draggable="false"></main></article>`
 
         expect(staticMarkup).toBe(expectedMarkup)
         expect(string).toBe(expectedMarkup)
@@ -32,7 +32,7 @@ describe("Reorder", () => {
         const staticMarkup = renderToStaticMarkup(<Component />)
         const string = renderToString(<Component />)
 
-        const expectedMarkup = `<article><main style="z-index:unset;transform:none;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none;touch-action:pan-x" draggable="false"></main></article>`
+        const expectedMarkup = `<article><main style="z-index:unset;will-change:transform;transform:none;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none;touch-action:pan-x" draggable="false"></main></article>`
 
         expect(staticMarkup).toBe(expectedMarkup)
         expect(string).toBe(expectedMarkup)

diff --git a/packages/framer-motion/src/gestures/drag/VisualElementDragControls.ts b/packages/framer-motion/src/gestures/drag/VisualElementDragControls.ts
@@ -33,6 +33,7 @@ import { percent } from "../../value/types/numbers/units"
 import { animateMotionValue } from "../../animation/interfaces/motion-value"
 import { getContextWindow } from "../../utils/get-context-window"
 import { frame } from "../../frameloop"
+import { addValueToWillChange } from "../../value/use-will-change/add-will-change"
 
 export const elementDragControls = new WeakMap<
     VisualElement,
@@ -78,6 +79,8 @@ export class VisualElementDragControls {
      */
     private elastic = createBox()
 
+    private removeWillChange: VoidFunction | undefined
+
     constructor(visualElement: VisualElement<HTMLElement>) {
         this.visualElement = visualElement
     }
@@ -157,6 +160,12 @@ export class VisualElementDragControls {
                 frame.postRender(() => onDragStart(event, info))
             }
 
+            this.removeWillChange?.()
+            this.removeWillChange = addValueToWillChange(
+                this.visualElement,
+                "transform"
+            )
+
             const { animationState } = this.visualElement
             animationState && animationState.setActive("whileDrag", true)
         }
@@ -235,6 +244,8 @@ export class VisualElementDragControls {
     }
 
     private stop(event: PointerEvent, info: PanInfo) {
+        this.removeWillChange?.()
+
         const isDragging = this.isDragging
         this.cancel()
         if (!isDragging) return
@@ -443,13 +454,16 @@ export class VisualElementDragControls {
         transition: Transition
     ) {
         const axisValue = this.getAxisMotionValue(axis)
+
         return axisValue.start(
             animateMotionValue(
                 axis,
                 axisValue,
                 0,
                 transition,
-                this.visualElement
+                this.visualElement,
+                false,
+                addValueToWillChange(this.visualElement, axis)
             )
         )
     }