On 5/12/12 10:54, Neil wrote:
John Daggett wrote:
Last time I looked, Webkit caches activated fonts, so the second time
the UA loads the same font (e.g. in a different document) it will be
shown immediately without fallback content first.
Ah, so that explains the fallback flash I experience on a site I
frequent that makes heavy use of a downloaded symbol font. It is irksome
because the fallback content is ASCII text ;-) It's not so bad for other
downloaded fonts as usually the only problem is that the aspect ratio is
wrong so the line wrapping changes once the font loads.
You shouldn't normally see a flash of fallback text unless the font is
particularly slow to load; the text should be invisible until the font
is available. We aim to hide the text until the font is ready, unless it
takes more than a few seconds to load. (The timeout is configurable -
see gfx.downloadable_fonts.fallback_delay - so if you've set it lower
than the default of 3000ms, you'll see visible fallback more frequently.)
Could you point us to the irksome site? If you're often seeing ASCII
fallback, I wonder if there's something unusual about how it's
specifying/loading the symbol font.
BTW, in bug 816483 I'm proposing to cache/share the activated fonts
across pages, so that when you visit successive pages that use the same
fonts, they'll be available immediately.
JK
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