774128 - Combobox button is blurry and its text is outside when the <option> height is large

Status: NEW

(Core :: Widget: Cocoa, defect)

Description

[Mats Palmgren (inactive)]

STEPS TO REPRODUCE
1. load Testcase 3 in bug 314939:
https://bug314939.bugzilla.mozilla.org/attachment.cgi?id=238744

Comment 1

[Mats Palmgren (inactive)]

Attachment: screenshot

Comment 2

[Mounir Lamouri (:mounir)]

This is a Cocoa widget issue. On MacOS, we draw the native widget but there are usually 2 to 4 sizes. Apple, doesn't want developers to use custom size. There is a hack for drawing custom sizes (we take the size bigger than the one we want, we draw it in a canvas and resize it to the size we want). Unfortunately, it is working quite bad for very big widgets.

The solution for this should be to revert to the default rendering (like -moz-appearance: none) when we see that the element to be draw is way too big for us.