Buttons and menus are not visible when a theme other than the one used in Windows is selected

[RikeWen]

Similar to closed issue #288 but not exactly the same.

You can check it in the live demo: https://angular-pdf-viewer-demo.vercel.app/

If you use a different theme in Windows than in the component, the buttons and menus won't be clearly visible.

How to reproduce:

• use dark theme in windows
• open live demo
• select light theme
• buttons an menus are not really visible for the user

Same behaviour for the other direction: light theme in windows and dark theme in the component.

[codehippie1]

Fixed in v26.0.0. The theme system now sets toolbar button/menu colors per the selected [theme] (light / dark / auto) via CSS variables, decoupled from the OS color scheme — so controls stay visible when the app theme differs from the Windows theme. Please update and reopen if you still see invisible buttons.

[RikeWen]

Still not work, even in the live demo:

[codehippie1]

Sure, will take a look

[codehippie1]

Thanks for the nudge and the screenshot — you were right, the 26.0.0 change didn't actually fix this.

Root cause: PDF.js v6 colours the toolbar/menu icons with the CSS light-dark() function, which follows the inherited color-scheme. PDF.js sets color-scheme: light dark on :root (i.e. follow the OS), and our theme classes set colours but never pinned color-scheme — so the icons kept tracking the OS. When the app theme differed from the Windows theme, they resolved to the wrong variant and went invisible.

Fix (#334): the .ng2-theme-light/-dark classes now pin color-scheme to the selected theme, so the toolbar/menu icons resolve to the correct (visible) variant regardless of the OS theme. Verified by reproducing the mismatch (app theme dark, OS light): the toolbar now computes color-scheme: dark and the icons render white/visible.

It's merged to master but not yet on npm or the live demo — it'll go out in the next release. I'll leave this open so you can confirm once it's published; please reopen if anything still looks off then.