1439895 - Speed up changes in font inspector preview

Status: RESOLVED WORKSFORME

(DevTools :: Inspector, defect)

Description

[Mike Ratcliffe [:miker] [:mratcliffe] [:mikeratcliffe]]

STR:

1. Load `devtools/client/inspector/fonts/test/browser_fontinspector.html`
2. Open the font inspector.
3. Click the font preview section where it displays ABC.
4. Change the text by typing ABCDEFGHIJKLMNOPQRSTUVWXYZ (you can type quickly).

Expected:
The text is updated almost instantly.

Actual:
It takes 4 minutes 20 seconds for the changes to appear.

Comment 1

[Mike Ratcliffe [:miker] [:mratcliffe] [:mikeratcliffe]]

I don't understand how this test is passing on try so maybe it is something to do with my setup.

An easy fix is using a setTimeout loop to wait for the last character typed before updating.

Comment 2

[Julian Descottes [:jdescottes]]

Your system might be particularly slow, here I can see the UI hang for some seconds when typing extremely fast, but nothing close to 4mn. Regarding the test, it only tries to write "The quick brown", which is not a very long string.

Comment 3

[Mike Ratcliffe [:miker] [:mratcliffe] [:mikeratcliffe]]

This is taking too long and this is not a priority.

I suspect that the best way to fix this is to import the fonts into the font inspector panel.

From there we could just use the fonts directly.

Comment 4

[Mike Ratcliffe [:miker] [:mratcliffe] [:mikeratcliffe]]

Turned out to be a hardware issue with my MBP... after rebooting 3 times and running diagnostics it runs at a perfectly acceptable speed.

What a waste of time.