ebiten/examples/mixedfont/main.go

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// Copyright 2023 The Ebitengine Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"bytes"
"log"
"golang.org/x/image/font/gofont/goregular"
"github.com/hajimehoshi/ebiten/v2"
"github.com/hajimehoshi/ebiten/v2/examples/resources/fonts"
"github.com/hajimehoshi/ebiten/v2/text/v2"
)
const (
screenWidth = 640
screenHeight = 480
)
var (
goRegularFaceSource *text.GoTextFaceSource
mplusFaceSource *text.GoTextFaceSource
)
func init() {
s, err := text.NewGoTextFaceSource(bytes.NewReader(fonts.MPlus1pRegular_ttf))
if err != nil {
log.Fatal(err)
}
mplusFaceSource = s
}
func init() {
s, err := text.NewGoTextFaceSource(bytes.NewReader(goregular.TTF))
if err != nil {
log.Fatal(err)
}
goRegularFaceSource = s
}
type Game struct {
face text.Face
}
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func (g *Game) Update() error {
if g.face == nil {
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// goregular.TTF is used primarily. If a glyph is not found in this font, the second font is used.
// Use text.LimitedFace to limit the glyphs.
en := text.NewLimitedFace(&text.GoTextFace{
Source: goRegularFaceSource,
Size: 24,
})
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// Limit the glyphs for ASCII and Latin-1 characters for this face.
// This means that, for example, '…' (U+2026) is not rendered by this face.
en.AddUnicodeRange('\u0020', '\u00ff')
// M+ Font is the second font.
// Use a relatively big size to see different-sized faces are well mixed.
ja := &text.GoTextFace{
Source: mplusFaceSource,
Size: 32,
}
f, err := text.NewMultiFace(en, ja)
if err != nil {
return err
}
g.face = f
}
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return nil
}
func (g *Game) Draw(screen *ebiten.Image) {
op := &text.DrawOptions{}
op.GeoM.Translate(20, 20)
op.LineSpacing = 48
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text.Draw(screen, "HelloこんにちはWorld世界\n日本語とEnglish…", g.face, op)
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}
func (g *Game) Layout(outsideWidth, outsideHeight int) (int, int) {
return screenWidth, screenHeight
}
func main() {
ebiten.SetWindowSize(screenWidth, screenHeight)
ebiten.SetWindowTitle("Mixed Font Faces (Ebitengine Demo)")
if err := ebiten.RunGame(&Game{}); err != nil {
log.Fatal(err)
}
}