Fix MapControl placeholder text truncation at 200% text scaling #1990
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…of fixed Width Co-authored-by: niels9001 <9866362+niels9001@users.noreply.github.com>
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[WIP] [WinUI 3 Gallery: Media-> MapControl]: On applying text scaling to 200%, 'Map Service Token' placeholder text is getting truncated.
Fix MapControl placeholder text truncation at 200% text scaling
Jul 30, 2025
niels9001
approved these changes
Jul 30, 2025
marcelwgn
approved these changes
Jul 30, 2025
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The "Map service token" placeholder text in the MapControl sample page was getting truncated when text scaling was set to 200%. This accessibility issue affected users with low vision who rely on text scaling features.
Root Cause
The PasswordBox control used a fixed
Width="200"which prevented the control from expanding to accommodate larger text when scaling was applied.Solution
Changed the PasswordBox from using a fixed width to
MinWidth="200", allowing the control to expand beyond 200 pixels when needed while maintaining the minimum width for normal text scaling scenarios.Technical Changes
WinUIGallery/Samples/ControlPages/MapControlPage.xamlline 39Width="200"toMinWidth="200"on the Map Service Token PasswordBoxThis approach is consistent with responsive design patterns used throughout the codebase and ensures the placeholder text remains fully visible at all text scaling levels without compromising the existing layout.
Testing
At 200% text scaling, the PasswordBox will now expand to provide sufficient space for the placeholder text to render completely, while maintaining the original 200px width at normal scaling levels.
Fixes #1951.
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