Open Bug 1326948 Opened 7 years ago Updated 2 years ago

Changing zoom level using Ctrl+"+" works differently from Ctrl+Mouse wheel scroll, so it's possible to get 97% and 103%

Categories

(Core :: Layout, defect, P3)

defect

Tracking

()

Tracking Status
firefox50 --- affected
firefox51 --- affected
firefox52 --- wontfix
firefox53 --- affected

People

(Reporter: arni2033, Unassigned)

Details

(Keywords: dupeme)

>>>   My Info:   Win7_64, Nightly 49, 32bit, ID 20160526082509
STR_1:
1. Set zoom level on this page to 100%
2. Press Ctrl+"+" 3 times
3. Hold Ctrl key, rotate mouse wheel down 3 times

AR:  Zoom level is set to 103%
ER:  Either X or Y
 X) Changing zoom level via keyboard should work the same way as via Ctrl+mouse wheel scroll
 Y) Strange values like 103% and 97% should be prohibited. Reference:
    Ctrl+"+" only switches between predefined values, it rounds off the numbers (when I set zoom level
    to 130% or 140% using mouse wheel, pressing Ctrl+"+" changes zoom level to 150% in both cases).

Note:
 Fractional zoom levels 103%, 97% are NOT equal to 100% visually, as they cause numerous layout bugs.
No longer blocks: 1277113
User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:50.0) Gecko/20100101 Firefox/50.0
Firefox: 50.1.0, Build ID: 20161208153507

I have managed to reproduce this issue on the latest Firefox (50.1.0) release and latest Nightly (53.0a1) build. Is also reproducible if you zoom out the page.
Component: Untriaged → Panning and Zooming
Product: Firefox → Core
Text zoom is owned by layout.
Component: Panning and Zooming → Layout
Too late for firefox 52, mass-wontfix.
Priority: -- → P3
Severity: normal → S3
Keywords: dupeme
Whiteboard: [dupeme]
You need to log in before you can comment on or make changes to this bug.