objects/icon.go

package objects

import "git.tebibyte.media/tomo/tomo"
import "git.tebibyte.media/tomo/tomo/data"
import "git.tebibyte.media/tomo/tomo/canvas"

// Icon displays a single icon.
type Icon struct {
	tomo.Box
}

func iconSizeString (size tomo.IconSize) string {
	switch size {
	case tomo.IconSizeLarge:  return "large"
	case tomo.IconSizeMedium: return "medium"
	default:                  return "small"
	}
}

// NewIcon creates a new icon from an icon ID.
func NewIcon (id tomo.Icon, size tomo.IconSize) *Icon {
	this := &Icon {
		Box: tomo.NewBox(),
	}
	this.SetRole(tomo.R("objects", "Icon"))
	this.SetTag(iconSizeString(size), true)
	this.setTexture(id.Texture(size))
	return this
}

// NewMimeIcon creates a new icon from a MIME type.
func NewMimeIcon (mime data.Mime, size tomo.IconSize) *Icon {
	this := &Icon {
		Box: tomo.NewBox(),
	}
	this.SetRole(tomo.R("objects", "Icon"))
	this.SetTag(iconSizeString(size), true)
	this.setTexture(tomo.MimeIcon(mime, size))
	return this
}

func (this *Icon) setTexture (texture canvas.Texture) {
	
	this.SetAttr(tomo.ATexture(texture))
	this.SetAttr(tomo.ATextureMode(tomo.TextureModeCenter))
	if texture == nil {
		this.SetAttr(tomo.AMinimumSize(0, 0))
	} else {
		bounds := texture.Bounds()
		this.SetAttr(tomo.AttrMinimumSize(bounds.Max.Sub(bounds.Min)))
	}
}