fix(title): don't show tooltip for imperceptible sub-pixel clip (#DS-4292)

[lskramarov]

No description provided.

[github-actions]

Visit the preview URL for this PR (updated for commit c8f3c15):

https://koobiq-next--prs-1684-irped160.web.app

_{(expires Mon, 06 Jul 2026 14:08:17 GMT)}

_{🔥 via Firebase Hosting GitHub Action 🌎}

_{Sign: c9e37e518febda70d0317d07e8ceb35ac43c534c}

[Copilot]

Pull request overview

This PR adjusts KbqTitleDirective overflow detection to avoid showing a tooltip when the text is only clipped by an imperceptible sub-pixel amount (for the default text-overflow: clip case), while still treating sub-pixel overflow as truncation when an ellipsis is actually rendered.

Changes:

• Added an SSR-friendly KBQ_WINDOW injection to read computed styles for text-overflow.
• Refactored the “fractional pixel” overflow path to use a dedicated isWidthOverflown helper that rounds widths when no ellipsis is present.
• Added Jest coverage for sub-pixel clip vs ellipsis behavior across both “text-only” and “container + child element” measurement scenarios.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
packages/components/title/title.directive.ts	Uses text-overflow (via KBQ_WINDOW.getComputedStyle) to decide whether sub-pixel width differences should count as visible truncation.
packages/components/title/title.directive.spec.ts	Adds unit tests validating the new sub-pixel overflow behavior for clip vs ellipsis, including container-vs-child ellipsis placement.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.