golang github.com/tdewolff/canvas example of text overflowing TextBox

main.go

package main

import (
	"log"

	"github.com/tdewolff/canvas"
	"github.com/tdewolff/canvas/renderers"
)

func main() {

	w := 20.0
	h := 10.0
	s := "Uncopyrightable"

	canvW := w + 20
	canvH := h + 10

	c := canvas.New(canvW, canvH)
	ctx := canvas.NewContext(c)

	// background
	ctx.SetFillColor(canvas.White)
	ctx.DrawPath(0, 0, canvas.Rectangle(canvW, canvH))

	// rectangle
	ctx.SetFillColor(canvas.Salmon)
	ctx.SetStrokeColor(canvas.Pink)
	ctx.SetStrokeWidth(0.3)
	r := canvas.Rectangle(w, h)
	ctx.DrawPath(5, 5, r)

	// text
	t := text(w, h, s)
	ctx.DrawText(5, 5+h, t)

	renderers.Write("output.svg", c)
}

func text(w, h float64, s string) *canvas.Text {
	return canvas.NewTextBox(LoadArial(), s, w, h, canvas.Center, canvas.Center, 0.0, 0.0)
}

// LoadArial will load Arial font. If not present, alternative match will be loaded.
// So this should work on all OSes.
func LoadArial() *canvas.FontFace {
	arial := canvas.NewFontFamily("arial")
	if err := arial.LoadLocalFont("arial", canvas.FontRegular); err != nil {
		log.Panic("error loading Arial (or alternative) font,", err)
	}
	return arial.Face(12)
}