window.Resize is not respected at startup with 2.6.0-pre when SetContent is called after Show

[hkparker]

Checklist

• I have searched the issue tracker for open issues that relate to the same problem, before opening a new one.
• This issue only relates to a single bug. I will open new issues for any other problems.

Describe the bug

window.Resize does not apply if window.SetContent is called after window.Show

It used to in 2.5.3. Is this behavior we should keep in 2.6.0?

How to reproduce

call window.SetContent after window.Show

Screenshots

2.5.3:

bb1657e:

Example code

package main

import (
	"fyne.io/fyne/v2"
	"fyne.io/fyne/v2/app"
	"fyne.io/fyne/v2/container"
	"fyne.io/fyne/v2/widget"
)

func main() {
	demo := app.New()
	window := demo.NewWindow("Demo")
	window.SetMaster()
	window.Resize(fyne.Size{Height: 400, Width: 400})

	window.Show()
	window.SetContent(container.NewCenter(widget.NewLabel("this is a label")))

	demo.Run()
}

Fyne version

bb1657e

Go compiler version

go1.23.4 linux/amd64

Operating system and version

Arch Linux

Additional Information

No response

[hkparker]

@Jacalz this occurs when set content is called after show, but does not occur when set content is set before show. Updated ticket with screenshots and example code. Since this is a behavior change 2.5.3->2.6.0 this is probably a bug, but maybe not.

[andydotxyz]

Does the window show large and then get smaller? Or is it calling SetContent so fast after show that it just appears at the wrong size?

[hkparker]

I didn't notice it start large, from my perspective it just appears the wrong size. I moved things around in my code have it working by calling Show later, but is SetContent supposed to resize the window like this?

[andydotxyz]

but is SetContent supposed to resize the window like this?

SetContent ensures that the window is at least minimum size. It should not cause the window to shrink if the min is less than current size.

[hkparker]

Right ok that makes sense. I use SetContent later after the app is up without this problem too, and it doesn't resize anything as far as I recall