Fix blurred image position when using objectPosition (#26590)

## Bug

fixes #26309

## Documentation / Examples

see #26309

- [ ] Make sure the linting passes

Author: schoenwaldnils

packages/next/client/image.tsx

@@ -445,8 +445,9 @@ export default function Image({
     ...(placeholder === 'blur'
       ? {
           filter: 'blur(20px)',
-          backgroundSize: 'cover',
+          backgroundSize: objectFit || 'cover',
           backgroundImage: `url("${blurDataURL}")`,
+          backgroundPosition: objectPosition || '0% 0%',
         }
       : undefined),
   }

test/integration/image-component/default/pages/blurry-placeholder.js

@@ -15,6 +15,17 @@ export default function Page() {
         blurDataURL="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='400' viewBox='0 0 400 400'%3E%3Cfilter id='blur' filterUnits='userSpaceOnUse' color-interpolation-filters='sRGB'%3E%3CfeGaussianBlur stdDeviation='20' edgeMode='duplicate' /%3E%3CfeComponentTransfer%3E%3CfeFuncA type='discrete' tableValues='1 1' /%3E%3C/feComponentTransfer%3E%3C/filter%3E%3Cimage filter='url(%23blur)' href='data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAMDAwMDAwQEBAQFBQUFBQcHBgYHBwsICQgJCAsRCwwLCwwLEQ8SDw4PEg8bFRMTFRsfGhkaHyYiIiYwLTA+PlT/wAALCAAKAAoBAREA/8QAMwABAQEAAAAAAAAAAAAAAAAAAAcJEAABAwUAAwAAAAAAAAAAAAAFAAYRAQMEEyEVMlH/2gAIAQEAAD8Az1bLPaxhiuk0QdeCOLDtHixN2dmd2bsc5FPX7VTREX//2Q==' x='0' y='0' height='100%25' width='100%25'/%3E%3C/svg%3E"
       />
 
+      <Image
+        priority
+        id="blurry-placeholder-tall-centered"
+        src="/test.ico"
+        width="400"
+        height="400"
+        placeholder="blur"
+        blurDataURL="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='800' viewBox='0 0 400 800'%3E%3Cfilter id='blur' filterUnits='userSpaceOnUse' color-interpolation-filters='sRGB'%3E%3CfeGaussianBlur stdDeviation='20' edgeMode='duplicate' /%3E%3CfeComponentTransfer%3E%3CfeFuncA type='discrete' tableValues='1 1' /%3E%3C/feComponentTransfer%3E%3C/filter%3E%3Cimage filter='url(%23blur)' href='data:image/jpg;base64,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' x='0' y='0' height='100%25' width='100%25'/%3E%3C/svg%3E"
+        objectPosition="center"
+      />
+
       <div id="spacer" style={{ height: '100vh' }} />
 
       <Image

test/integration/image-component/default/pages/static.js

@@ -11,6 +11,7 @@ import testBMP from '../public/test.bmp'
 import testICO from '../public/test.ico'
 
 import TallImage from '../components/TallImage'
+
 const Page = () => {
   return (
     <div>

test/integration/image-component/default/test/index.test.js

@@ -640,6 +640,14 @@ describe('Image Component Tests', () => {
         `background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='400' viewBox='0 0 400 400'%3E%3Cfilter id='blur' filterUnits='userSpaceOnUse' color-interpolation-filters='sRGB'%3E%3CfeGaussianBlur stdDeviation='20' edgeMode='duplicate' /%3E%3CfeComponentTransfer%3E%3CfeFuncA type='discrete' tableValues='1 1' /%3E%3C/feComponentTransfer%3E%3C/filter%3E%3Cimage filter='url(%23blur)' href='data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAMDAwMDAwQEBAQFBQUFBQcHBgYHBwsICQgJCAsRCwwLCwwLEQ8SDw4PEg8bFRMTFRsfGhkaHyYiIiYwLTA+PlT/wAALCAAKAAoBAREA/8QAMwABAQEAAAAAAAAAAAAAAAAAAAcJEAABAwUAAwAAAAAAAAAAAAAFAAYRAQMEEyEVMlH/2gAIAQEAAD8Az1bLPaxhiuk0QdeCOLDtHixN2dmd2bsc5FPX7VTREX//2Q==' x='0' y='0' height='100%25' width='100%25'/%3E%3C/svg%3E")`
       )
 
+      expect($html('#blurry-placeholder')[0].attribs.style).toContain(
+        `background-position:0% 0%`
+      )
+
+      expect(
+        $html('#blurry-placeholder-tall-centered')[0].attribs.style
+      ).toContain(`background-position:center`)
+
       expect($html('#blurry-placeholder-with-lazy')[0].attribs.style).toContain(
         `background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='400' viewBox='0 0 400 400'%3E%3Cfilter id='blur' filterUnits='userSpaceOnUse' color-interpolation-filters='sRGB'%3E%3CfeGaussianBlur stdDeviation='20' edgeMode='duplicate' /%3E%3CfeComponentTransfer%3E%3CfeFuncA type='discrete' tableValues='1 1' /%3E%3C/feComponentTransfer%3E%3C/filter%3E%3Cimage filter='url(%23blur)' href='data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAMDAwMDAwQEBAQFBQUFBQcHBgYHBwsICQgJCAsRCwwLCwwLEQ8SDw4PEg8bFRMTFRsfGhkaHyYiIiYwLTA+PlT/wAALCAAKAAoBAREA/8QAMwABAQEAAAAAAAAAAAAAAAAAAAcJEAABAwUAAwAAAAAAAAAAAAAFAAYRAQMEEyEVMlH/2gAIAQEAAD8Az1bLPaxhiuk0QdeCOLDtHixN2dmd2bsc5FPX7VTREX//2Q==' x='0' y='0' height='100%25' width='100%25'/%3E%3C/svg%3E")`
       )

test/integration/image-component/default/test/static.test.js

@@ -38,12 +38,12 @@ const runTests = () => {
   })
   it('Should add a blurry placeholder to statically imported jpg', async () => {
     expect(html).toContain(
-      `style="position:absolute;top:0;left:0;bottom:0;right:0;box-sizing:border-box;padding:0;border:none;margin:auto;display:block;width:0;height:0;min-width:100%;max-width:100%;min-height:100%;max-height:100%;filter:blur(20px);background-size:cover;background-image:url("data:image/jpeg;base64,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")"`
+      `style="position:absolute;top:0;left:0;bottom:0;right:0;box-sizing:border-box;padding:0;border:none;margin:auto;display:block;width:0;height:0;min-width:100%;max-width:100%;min-height:100%;max-height:100%;filter:blur(20px);background-size:cover;background-image:url("data:image/jpeg;base64,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");background-position:0% 0%"`
     )
   })
   it('Should add a blurry placeholder to statically imported png', async () => {
     expect(html).toContain(
-      `style="position:absolute;top:0;left:0;bottom:0;right:0;box-sizing:border-box;padding:0;border:none;margin:auto;display:block;width:0;height:0;min-width:100%;max-width:100%;min-height:100%;max-height:100%;filter:blur(20px);background-size:cover;background-image:url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAICAQAAABuBnYAAAAATklEQVR42i2I0QmAMBQD869Q9K+IsxU6RkfoiA6T55VXDpJLJC9uUJIzcx+XFd2dXMbx8n+QpoeYDpgY66RaDA83jCUfVpK2pER1dcEUP+KfSBtXK+BpAAAAAElFTkSuQmCC")"`
+      `style="position:absolute;top:0;left:0;bottom:0;right:0;box-sizing:border-box;padding:0;border:none;margin:auto;display:block;width:0;height:0;min-width:100%;max-width:100%;min-height:100%;max-height:100%;filter:blur(20px);background-size:cover;background-image:url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAICAQAAABuBnYAAAAATklEQVR42i2I0QmAMBQD869Q9K+IsxU6RkfoiA6T55VXDpJLJC9uUJIzcx+XFd2dXMbx8n+QpoeYDpgY66RaDA83jCUfVpK2pER1dcEUP+KfSBtXK+BpAAAAAElFTkSuQmCC");background-position:0% 0%"`
     )
   })
 }