When Luke tests the setComposition method of the InputContext API, he found no underline style was applied to the composition text. The screenshort: https://bugzilla.mozilla.org/attachment.cgi?id=802794

`nsLookAndFeel::GetIntImpl` doesn't set the style of composition text in the file mozilla-central/widget/gonk/nsLookAndFeel.cpp. That seems to be the cause.

(In reply to Yuan Xulei [:yxl] from comment #1) > `nsLookAndFeel::GetIntImpl` doesn't set the style of composition text in the > file mozilla-central/widget/gonk/nsLookAndFeel.cpp. That seems to be the > cause. Yes, it must be so.

I made some changes to widget/gonk/nsLookAndFeel.cpp. I can change the composition text color, but still cannot add the underline style...

Comment on attachment 803734 [details] [diff] [review] WIP.patch Well, looks like there is no nsXPLookAndFeel::GetFloatImpl() on Gonk. You need to return 1.0f for eFloatID_IMEUnderlineRelativeSize. If the value is 2.0f, the underline width becomes twice as normal underline. Perhaps, eFloatID_SpellCheckerUnderlineRelativeSize should be implemented too. BTW, > + case eIntID_IMERawInputUnderlineStyle: > + case eIntID_IMEConvertedTextUnderlineStyle: > + aResult = NS_STYLE_TEXT_DECORATION_STYLE_SOLID; I like non-solid style better for it, though. But I'm not sure which style is major on other mobile platforms. Anyway, I'll file a bug for adding API which allows IME to customize each clause style.

With nsXPLookAndFeel::GetFloatImpl() implemented, it works.

Masayuki, thank you.