857924 - Text-shadow blur and text decoration messes up when selecting text

Status: NEW

(Core :: Layout: Text and Fonts, defect)

Description

[[HYBRID BEING]]

Attachment: Clipboard 2.png

User Agent: Mozilla/5.0 (Windows NT 6.1; rv:20.0) Gecko/20100101 Firefox/20.0
Build ID: 20130326150557

Steps to reproduce:

1. Have a text with "text-shadow" set to "rgb(0, 0, 0) 0px 16px 12px" and "text-decoration" set to "line-through"/"underline".
2. Select part of the text.


Actual results:

Additional shadow appeared at the start and the end of selection.


Expected results:

It shouldn't have.

Comment 1

[Loic]

Provide a small testcase (.html file), please.

Comment 2

[[HYBRID BEING]]

Attachment: Try selecting text in the middle.

Comment 3

[[HYBRID BEING]]

Attachment: Try selecting text in the middle.

Comment 4

[[HYBRID BEING]]

Attachment: Try selecting text in the middle.

Comment 5

[Loic]

I'm not sure if it's a valid regression. Anyway, the result:

m-c
good=2011-10-09
bad=2011-10-10
http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=b4da2d439cbc&tochange=e9c620a5c85f

Suspected bug:
Jonathan Kew — Bug 692752 - paint text-shadow after selection highlight background. r=roc

Comment 6

[[HYBRID BEING]]

Well, if selection having additional shadow is intended, it, at least, shouldn't have such clear borders nor it should have a gap.

Comment 7

[Jonathan Kew [:jfkthame]]

I'd say the result is clearly wrong - as you drag-select back and forth, it's as though there's an additional area of shadow "attached" to each end of the selected range. These don't appear if the selected range extends all the way to either end of the text, though.

Seems to be a problem with how the shadow is rendered for the separate selected/non-selected segments of the text.

Comment 8

[Mats Palmgren (inactive)]

The attached testcase seems to work fine for me in Nightly on Linux.

Comment 9

[Alice0775 White]

Attachment: select.html

Comment 10

[Alice0775 White]

Attachment: slightly complicated text-shadow

I can still reproduce on Nightly68.0a1 windows10.

Drag selection text as well as Select All(Ctrl+A).
OR Find in page, Ctrl+F and type foo.