1327780 - Text labels in profiler overlap each other when I zoom JS Flame Chart

Status: RESOLVED WONTFIX

(DevTools :: Performance Tools (Profiler/Timeline), defect)

Description

[arni2033]

>>>   My Info:   Win7_64, Nightly 49, 32bit, ID 20160526082509
STR_1:
1. Open devtools -> performance
2. Open attached "testcase 1" (profile)
3. Zoom in between 2649ms and 2650ms (for example)

AR:  Text labels in profiler overlap each other
ER:  Text labels shouldn't overlap each other

Comment 1

[arni2033]

Attachment: testcase 1 - text labels overlap each other profile.json

Comment 2

[Greg Tatum [:gregtatum]]

Ah yes, I'm seeing this. I believe it's because our heuristic for sizing text for the screen is off. It estimates the size of the text when rendering it based off of an average character size, and those long names with lots of wide characters like "W" are probably making our heuristic fail. I think this is probably an OK trade off for the speed of rendering the graph.