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Before and after the transition of transform, the baseline of the glyphs are uneven.

UNCONFIRMED
Unassigned

Status

()

Core
Graphics
--
trivial
UNCONFIRMED
6 years ago
6 years ago

People

(Reporter: Alan Gresley, Unassigned)

Tracking

Firefox Tracking Flags

(Not tracked)

Details

Attachments

(1 attachment)

(Reporter)

Description

6 years ago
User-Agent:       Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0) Gecko/20100101 Firefox/4.0
Build Identifier: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0) Gecko/20100101 Firefox/4.0

Watch the bottom of the line boxes 'Xx' and 'kK'. The baseline of the glyphs are only level when transitioning is happening. Before and after the transition, there is a 2px or 3px difference.

The baseline of the glyphs are only level when transitioning of transform is happening.

Reproducible: Always

Steps to Reproduce:
1. Hover the examples to cause a transition which causes a transformation.

Actual Results:  
Observed that the baseline of the glyphs is uneven when no transitioning is happening. 

Expected Results:  
The baseline of the glyphs are level when no transitioning is happening
(Reporter)

Comment 1

6 years ago
Created attachment 525636 [details]
Three examples, one using Ahem font
(Reporter)

Comment 2

6 years ago
Similar to this bug.

https://bugzilla.mozilla.org/show_bug.cgi?id=492214
Component: General → Graphics
Product: Firefox → Core
QA Contact: general → thebes
When the transitioning of transform is happening, things are layerized; when it's not, you're probably seeing a similar text layout problem as the bug you point out -- except on Windows.  (Cairo's idea of text layout with interesting transforms generally seems problematic...)
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