table select slow

[ddkwork]

Describe the bug

The line rendering speed of the table can't keep up with the speed of the mouse machine, and there is a delay, which is more serious than this in the real scene, because the demo is delayed for 1 second to simulate user operations, we can change the time size of the delay to test it, and generally the delay feels obvious after adding 10 lines

How to reproduce

Example code

// Command async demonstrates async updating in Cogent Core.
package main

import (
    "time"

    "cogentcore.org/core/events"
    "cogentcore.org/core/gi"
    "cogentcore.org/core/giv"
    "cogentcore.org/core/icons"
)

type tableStruct struct {
    Icon       icons.Icon
    IntField   int
    FloatField float32
    StrField   string
    File       gi.Filename
}

const rows = 100000

func main() {
    table := make([]*tableStruct, 0, rows)
    b := gi.NewBody("Async Updating")
    tv := giv.NewTableView(b)
    tv.SetReadOnly(true)
    tv.SetSlice(&table)

    b.OnShow(func(e events.Event) {
        go func() {
            for i := 0; i < rows; i++ {
                updt := b.UpdateStartAsync()
                table = append(table, &tableStruct{IntField: i, FloatField: float32(i) / 10.0})
                tv.UpdateWidgets()
                if len(table) > 0 {
                    tv.ScrollToIdx(len(table) - 1)
                }
                b.UpdateEndAsyncLayout(updt)
                //time.Sleep(1 * time.Millisecond)
                time.Sleep(1 * time.Second)
            }
        }()
    })

    b.RunMainWindow()
}

Relevant output

see title

Platform

Windows

[ddkwork]

I don't feel like it's a mutex repelling it

[kkoreilly]

I can reproduce this issue: the cause of the issue is not that the table selection is "slow", but that there is a bug that causes table selection via widgets to not work for scrolled table views. I will work on fixing this bug today.

[ddkwork]

I can reproduce this issue: the cause of the issue is not that the table selection is "slow", but that there is a bug that causes table selection via widgets to not work for scrolled table views. I will work on fixing this bug today.

It's a perfect fix!