Preliminary Perfetto findings

[sudara]

Note: All these timings are Debug (important context for the inspector) and just performed on my main app, which does have a lot of components but not outrageous.

Outline Component

8735 calls to close subitems, adding up to 137ms.

Select Component

Again, recursively closing is an offender, and it's called twice.

Toggle

Looks likeComponentModel::selectComponent is called twice

,

[sudara]

Looks like the preview snapshot is also being called twice per ComponentModel::updateModel

[sudara]

Color picker is doing a good job being efficient

[sudara]

restoreBoundsIfNeeded sorta takes up a gross 15ms when the inspector closes.

[sudara]

The preview snapshot and doubling up on selection/tree closing is fixed in #80.

restoreBoundsIfNeeded is a tricky one. As expected, resized being called multiple times is hurtful.

[sudara]

Post optimization Debug times:

initial tree construction of > 8k items and inspector construction in 37ms:

select component in 1.6ms:

Outline component in 3ms

toggle back on in 25ms:

toggle off in 21ms:

lowest hanging fruit left is probably restoring bounds

[sudara]

Almost all time is spent in setResizable — it seems to call recreateDesktopWindow.

[sudara]

Without calling setResizable, toggle off is down to 1.5ms

And toggle on is down to 1.2ms

There's not much change in behavior since setResizeLimits is still being called, so that prevents unintentional UI states (like resizing the inspector when disabled).