Revert workaround for unexpected text wrapping in ExpandableComposite

[HeikoKlare]

A workaround for unexpected text wrapping in ExpandableComposite had been introduced to deal with imprecise size calculation of controls for zooms like 125% and 175%. With recent changes to SWT, the size calculation for controls has been improved such that they always allocate sufficient space to fit their contents in. That makes the workaround in ExpandableComposite obsolete.

This change thus removes the obsolete, temporary workaround introduced with:

• Workaround for unexpected text wrapping in ExpandableComposite #2986

[github-actions]

Test Results

 3 018 files  ±0   3 018 suites  ±0   2h 8m 44s ⏱️ - 6m 41s
 8 236 tests ±0   7 987 ✅ +1  249 💤 ±0  0 ❌  - 1 
23 628 runs  ±0  22 834 ✅ +1  794 💤 ±0  0 ❌  - 1 

Results for commit b12e88c. ± Comparison against base commit 2d4334f.

♻️ This comment has been updated with latest results.

[arunjose696]

Tested with zoom levels 125, 150, 175, and 250. The issue that previously required a workaround is no longer present. It can be observed that using pixelToPointAsSufficientlyLargeSize to calculate sizes which performs rounding up resolves the issue.
If RoundingMode.Round is used in pixelToPointAsSufficientlyLargeSize, the issue can reappear without the workaround. This confirms that the current approach fixes the problem. So approving this revert.

[eclipse-platform-bot]

This pull request changes some projects for the first time in this development cycle.
Therefore the following files need a version increment:

bundles/org.eclipse.ui.forms/META-INF/MANIFEST.MF

Warning

🚧 This PR cannot be modified by maintainers because edits are disabled or it is created from an organization repository. To obtain the required changes apply the git patch manually as an additional commit.

Git patch

From 84fbebc8ef17345ceb2401a9a40bdd1548b07c15 Mon Sep 17 00:00:00 2001
From: Eclipse Platform Bot <[email protected]>
Date: Mon, 1 Dec 2025 13:56:12 +0000
Subject: [PATCH] Version bump(s) for 4.39 stream


diff --git a/bundles/org.eclipse.ui.forms/META-INF/MANIFEST.MF b/bundles/org.eclipse.ui.forms/META-INF/MANIFEST.MF
index 0e03748813..97a3ce97c0 100644
--- a/bundles/org.eclipse.ui.forms/META-INF/MANIFEST.MF
+++ b/bundles/org.eclipse.ui.forms/META-INF/MANIFEST.MF
@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %name
 Bundle-SymbolicName: org.eclipse.ui.forms;singleton:=true
-Bundle-Version: 3.13.700.qualifier
+Bundle-Version: 3.13.800.qualifier
 Bundle-Vendor: %provider-name
 Bundle-Localization: plugin
 Export-Package: org.eclipse.ui.forms,
-- 
2.51.2

Further information are available in Common Build Issues - Missing version increments.