Fyne Rich Text - Resize Behavior

main.go

package main

import (
	"log"

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

func main() {

	var size = fyne.NewSize(100, 100)

	application := app.New()

	richText := widget.NewRichTextFromMarkdown("Hello **world**!")
	canvas := container.NewBorder(nil, nil, richText, nil)

	window := application.NewWindow("")
	window.SetContent(canvas)
	window.Resize(size)

  // richtext: w: 12779520p-17 h: 9437184p-18
	log.Printf("richtext: w: %b h: %b",
		richText.Size().Width,
		richText.Size().Height,
	)

	richText.ParseMarkdown(
		"# - - - - - - - - - - - - - - - - - - - - - - - -",
	)

	window.ShowAndRun()

  // richtext: w: 11305472p-15 h: 12058624p-17
	log.Printf("richtext: w: %b h: %b",
		richText.Size().Width,
		richText.Size().Height,
	)

}

// output:
// richtext: w: 12779520p-17 h: 9437184p-18
// richtext: w: 11305472p-15 h: 12058624p-17

The RichText and its parent window are resized to fit the content, even if we specify window.SetFixedSize(true) here

https://gist.github.com/kmesiab/df01624a79a665fc4b8bf9fa609f77bc#file-main-go-L23