8316159: Update BoxLayout sample image for crisper edges

[aivanov-jdk]

Problem

On a standard display with the scale of 100%, the BoxLayout sample has blurred edges.

It is the result of how SVG is rendered: the strokes fall between the pixel grid, therefore a 1-pixel wide stroke is blurred between the previous and the following pixels with 50% of colour on each pixel. It doesn't look as good.

Fix

Move all rectangles half a pixel to make edges crisp. The edges of the rectangles look crisp in 100% and 200%.

For more information see answers to the following questions on Stack Overflow:

• Why is my SVG line blurry or 2px in height when I specified 1px?
• Avoiding lines between adjacent SVG rectangles

---

Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

• JDK-8316159: Update BoxLayout sample image for crisper edges (Bug - P4)

Reviewers

• Phil Race (@prrace - Reviewer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk.git pull/15703/head:pull/15703
$ git checkout pull/15703

Update a local copy of the PR:
$ git checkout pull/15703
$ git pull https://git.openjdk.org/jdk.git pull/15703/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 15703

View PR using the GUI difftool:
$ git pr show -t 15703

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk/pull/15703.diff

Webrev

Link to Webrev Comment

[aivanov-jdk]

/summary Move all rectangles half a pixel to make edges crisp

[bridgekeeper]

👋 Welcome back aivanov! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

@aivanov-jdk Setting summary to Move all rectangles half a pixel to make edges crisp

[openjdk]

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[mlbridge]

Webrevs

• 00: Full (4e988cfa)

[openjdk]

@aivanov-jdk This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8316159: Update BoxLayout sample image for crisper edges

Move all rectangles half a pixel to make edges crisp

Reviewed-by: prr

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 161 new commits pushed to the master branch:

• c90d631: 8315750: Update subtype check profile collection on PPC following 8308869
• 00f585b: 8316206: Test StretchedFontTest.java fails for Baekmuk font
• c24c66d: 8316681: Rewrite URLEncoder.encode to use small reusable buffers
• bd2439f: 8316702: Only evaluate buffer when IGVPrintLevelOption >= 5
• 4b65483: 8316130: Incorrect control in LibraryCallKit::inline_native_notify_jvmti_funcs
• 7352bb9: 8316418: containers/docker/TestMemoryWithCgroupV1.java get OOM killed with Parallel GC
• 343cc0c: 8315576: compiler/codecache/CodeCacheFullCountTest.java fails after JDK-8314837
• fe86263: 8316319: Generational ZGC: The SoftMaxHeapSize might be wrong when CDS decreases the MaxHeapSize
• 775e22a: 8316699: TestDynamicConstant.java fails with release VMs
• a1e0346: 8316698: build failure caused by JDK-8316456
• ... and 151 more: https://git.openjdk.org/jdk/compare/fecd2fd8f26d0e8905a519e30e9aa171683c9df1...master

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

➡️ To integrate this PR with the above commit message to the master branch, type /integrate in a new comment.

[aivanov-jdk]

/integrate

[openjdk]

Going to push as commit 3481ecb.
Since your change was applied there have been 228 commits pushed to the master branch:

• 7981251: 8316970: Add internal annotation to mark restricted methods
• 77fac0f: 8316906: Clarify TLABWasteTargetPercent flag
• 2d154fc: 8316566: RISC-V: Zero extended narrow oop passed to Atomic::cmpxchg
• 42924ed: 8316946: jtreg failure handler pages are mislabelling the jcmd/thread/dump_to_file results.
• 384d2ea: 8316125: Windows call_stub unnecessarily saves xmm16-31 when UseAVX>=3
• 84390dd: 8316658: serviceability/jvmti/RedefineClasses/RedefineLeakThrowable.java fails intermittently
• 52073b2: 8316994: Avoid modifying ClassLoader and Module objects during -Xshare:dump
• 83c0e45: 8306630: Bump minimum boot jdk to JDK 21
• d3a79b5: 8316371: Open some swing tests 6
• 750da00: 8316743: RISC-V: Change UseVectorizedMismatchIntrinsic option result to warning
• ... and 218 more: https://git.openjdk.org/jdk/compare/fecd2fd8f26d0e8905a519e30e9aa171683c9df1...master

Your commit was automatically rebased without conflicts.

[openjdk]

@aivanov-jdk Pushed as commit 3481ecb.

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