objects/textview.go

package objects

import "image"
import "git.tebibyte.media/tomo/tomo"

// TextView is an area for displaying a large amount of multi-line text.
type TextView struct {
	tomo.TextBox
}

// NewTextView creates a new text view.
func NewTextView (text string) *TextView {
	this := &TextView { TextBox: tomo.NewTextBox() }
	this.SetRole(tomo.R("objects", "TextView"))
	this.SetFocusable(true)
	this.SetSelectable(true)
	this.SetText(text)
	this.SetAttr(tomo.AOverflow(false, true))
	this.SetAttr(tomo.AWrap(true))
	this.OnScroll(this.handleScroll)
	return this
}

func (this *TextView) handleScroll (x, y float64) bool {
	this.ScrollTo(this.ContentBounds().Min.Sub(image.Pt(int(x), int(y))))
	return true
}