gg/text.go

package gg

import (
	//"strings"
	"golang.org/x/image/font"
	"golang.org/x/image/font/opentype"
	"github.com/hajimehoshi/ebiten/v2/text"
	"github.com/hajimehoshi/ebiten/v2"
	"io"
	//"fmt"
)

//type FontOptions = font.Options
var (
	FontHintingNone = font.HintingNone
)

type Face = font.Face

type TtfFont = opentype.Font
type TtfFaceOptions = opentype.FaceOptions
type TtfFace = opentype.Face

func MakeFaceFromTtf(src io.ReaderAt, opts *TtfFaceOptions) (Face, error) {
	fnt, err := ParseTtfFont(src)
	if err != nil {
		return nil, err
	}

	face, err := NewTtfFace(fnt, opts)
	if err != nil {
		return nil, err
	}

	return face, nil
}

func ParseTtfFont(src io.ReaderAt) (*TtfFont, error) {
	return opentype.ParseReaderAt(src)
}

func NewTtfFace(fnt *TtfFont, opts *TtfFaceOptions) (Face, error) {
	return opentype.NewFace(fnt, opts)
}

// The type implements basic drawable text.
// (Now needs to implement rotation, scaling etc, cause now only position)
type Text struct {
	Object
	Transform
	Data string
	Face Face
	Colority
	Visibility
}

func (txt *Text) Draw(c *Context) []EVertex {
	m := txt.Matrix()
	m.Concat(c.Camera.RealMatrix())
	//x, y := txt.Position.XY()
	//text.Draw(c.Image)
	text.DrawWithOptions(c.Image, txt.Data, txt.Face,
		&ebiten.DrawImageOptions{
			GeoM: m,
		},
	)
	return nil
}