Chrome fillText() Clipping Large Text

rezoner / playground

Playground.js is a framework for your javascript based games. It gives you out-of-box access to essentials like mouse, keyboard, sound and well designed architecture that you can expand to your needs.

MIT License

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Chrome fillText() Clipping Large Text #33

Closed jackrugile closed 8 years ago

jackrugile commented 8 years ago

My specs:

Mac OS X El Capitan - 10.11.3
Chrome 48

When approaching larger text sizes, usually around 100px+, the text is getting clipped. I know there is some behind the scenes action going on to get more accurate bounding boxes for text alignment, and I think it might be happening due to that. This is not happening in Firefox 44.0.2.

Here is a demo link and screenshot below: http://codepen.io/jackrugile/pen/e72ce88783098194ea7a5c3de39a29e4

screen shot 2016-02-15 at 12 35 44 am

rezoner commented 8 years ago

Oh my, I thought noone will use such big fonts :D Your prediction is good - I am measuring real font size using pixel data - but I've set the test canvas height to 100 - so it doesn't detects font larger than that.

Now to get rid of antialiasing on Chrome (windows) - I render the font in an intermediate canvas then scale it down. I think I will disable that for fonts larger than 32px - nevertheless fixed height in measuring process needs a fix too.

Thanks for notice.

rezoner commented 8 years ago

Okay - theoretically fixed.

jackrugile commented 8 years ago

Confirmed fixed. Thanks!

Heh, been working on something full screen, so I'm needing the bigger sizes for a title screen :)