SubPixel Font Rendering

[rodneyrehm]

Here's a test to determine if a browser has support for SubPixel Font Rendering. (DirectWrite vs. GDI on Windows, for example).

This could be used to switch fonts in case SubPixel Font Rendering is not supported and another font would look better.

[staabm]

seems like you don't need this constant/magic-value at all. just checkin with window.getComputedStyle should do the trick?

[rodneyrehm]

you are right, obviously. I removed the variable width and the unnecessary assignment. thx!

[ryanseddon]

Thanks @rodneyrehm

[renancouto]

Is this feature working right? I'm getting no-subpixelfont (false) every time.
I've tested on Firefox 14 with DirectWrite enabled (true (6.1.7601.17789)), it supposed to return true, right?

[rodneyrehm]

There is an issue with initial page zoom. If the page is zoomed, this test currently fails (and we don't have a clue how to circumvent that, yet).
Other than that it should work, yes.

[renancouto]

Thanks for the reply, but I'm still getting false. Here's the example: http://jsfiddle.net/fHUvY/
I got false on Firefox, Chrome and Opera (at least on FF should it should get true, since I checked on the about:support and the DirectWrite was enabled) and only got true on IE9. I tested on Windows 7 with a GeForce 9400 GT graphics card.

[rodneyrehm]

Might detect-zoom help identify the initial zoom level? Looks like an awful lot of code to load for "a simple test", though