1298002 - CSS cursors with hotspots not at (0,0) do not display

Status: NEW

(Core :: CSS Parsing and Computation, defect, P3)

Description

[Richie Hindle]

Attachment: cursors.zip

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2743.116 Safari/537.36

Steps to reproduce:

A CSS rule "cursor: url(x.cur)" doesn't work if the cursor defines a hotspot other than (0,0).


Actual results:

The cursor does not display.


Expected results:

The cursor should be displayed, and its hotspot should be respected.

Test page here: http://entrian.com/cursors.html

In Firefox, the cursor with a non-(0,0) hotspot fails to display.  In Chrome, IE11, and Edge, it displays fine.

I've attached the test page and the cursors.

Comment 1

[Ron Bentley [:rtb]]

I can reproduce this in both the current stable version and the nightly build.  Tested:

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:48.0) Gecko/20100101 Firefox/48.0
Build ID: 20160728203720

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:51.0) Gecko/20100101 Firefox/51.0
Build ID: 20160829030202

The behavior is subtle and difficult to screenshot.  The sample link presents two blocks side-by-side.  Hover over the block on the left and you see a custom cursor, with an image appended to it.  Hover over the block on the right and you do not.  You see only the regular pointer.

I saw a custom cursor in both blocks when I tried this in Chromium.

Presumably this would go to Core, CSS Parsing and Computation, but I'm not absolutely certain of that.

[bugday-20160829]

Comment 2

[Cosmin Muntean [:cmuntean], Ecosystem QA]

Firefox: 51.0a1, Build ID: 20160829030202
User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:51.0) Gecko/20100101 Firefox/51.0

I have tested this issue on the latest Firefox (48.0.2) release and latest Nightly (51.0a1) build and I have manged to reproduce it. The custom cursor is not displayed in the left box where cursor hotspot is (5,11). Instead of custom cursor is displayed the regular cursor.