[webkit-dev] Feature announcement: Font Boosting

Kenneth Rohde Christiansen kenneth.christiansen at gmail.com
Wed Apr 18 18:02:38 PDT 2012

I think it would be great to talk about this at the WebKit summit tomorrow,
if you are there.


On Tue, Apr 17, 2012 at 10:17 PM, John Mellor <johnme at chromium.org> wrote:

> Hi webkit-dev,
> You may have heard <http://youtu.be/aCdZIHBbRV0?t=1m26s> that Chrome for
> Android includes a "Font Boosting" feature. This is similar in intent to
> the text size adjust<http://developer.apple.com/library/ios/DOCUMENTATION/AppleApplications/Reference/SafariWebContent/AdjustingtheTextSize/AdjustingtheTextSize.html#//apple_ref/doc/uid/TP40006510-SW16>feature in Mobile Safari, that the QT port also seems
> interested in <http://webkit.org/b/73546>. Other mobile browsers have
> corresponding features: Mobile Firefox uses font inflation<http://dbaron.org/log/20111126-font-inflation>and IE Mobile applies text
> size adjustment<http://msdn.microsoft.com/en-us/library/ff462082(v=vs.92).aspx#sectionToggle2>
> .
> Font Boosting increases the font size in wide blocks, so that you can
> easily read the text after double-tapping to fit the block to the screen,
> instead of having to zoom in further then scroll from side to side for each
> line you read.
> The details are subtle (since web text layout is complicated), and there's
> still a lot of tweaking to do. We chose to boost font sizes more than
> Mobile Safari (which has various limits), producing easily legible text,
> more in line with IE Mobile and Firefox Mobile.
> This is core functionality for mobile browsers, so we would like to
> upstream our implementation of Font Boosting to WebCore. We are keen to
> share code with other ports (e.g. QT and Mobile Safari) that are interested
> in this feature, and will be happy to incorporate suggestions on how to
> make this easier.
> I've opened webkit.org/b/84186 to track this effort.
> Best wishes,
> John

Kenneth Rohde Christiansen
Senior Engineer
Nokia Mobile Phones, Browser / WebKit team
Phone  +45 4093 0598 / E-mail kenneth at webkit. <http://gmail.com>org

http://codeposts.blogspot.com ﹆﹆﹆
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