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examples/font: use text/v2

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Updates #2454
This commit is contained in:
Hajime Hoshi 2023-11-17 13:02:00 +09:00
parent 147175d400
commit 2a1eac3b73
1 changed files with 38 additions and 34 deletions
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72
examples/font/main.go
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@ -15,18 +15,16 @@
package main package main
import ( import (
"bytes"
"fmt" "fmt"
"image/color" "image/color"
"log" "log"
"math/rand" "math/rand"
"time" "time"
"golang.org/x/image/font"
"golang.org/x/image/font/opentype"
"github.com/hajimehoshi/ebiten/v2" "github.com/hajimehoshi/ebiten/v2"
"github.com/hajimehoshi/ebiten/v2/examples/resources/fonts" "github.com/hajimehoshi/ebiten/v2/examples/resources/fonts"
"github.com/hajimehoshi/ebiten/v2/text" "github.com/hajimehoshi/ebiten/v2/text/v2"
) )
const ( const (
@ -37,9 +35,7 @@ const (
const sampleText = `The quick brown fox jumps over the lazy dog.` const sampleText = `The quick brown fox jumps over the lazy dog.`
var ( var (
mplusNormalFont font.Face jaKanjis = []rune{}
mplusBigFont font.Face
jaKanjis = []rune{}
) )
func init() { func init() {
@ -86,32 +82,16 @@ func init() {
} }
} }
var (
mplusFaceSource *text.GoTextFaceSource
)
func init() { func init() {
tt, err := opentype.Parse(fonts.MPlus1pRegular_ttf) s, err := text.NewGoTextFaceSource(bytes.NewReader(fonts.MPlus1pRegular_ttf))
if err != nil { if err != nil {
log.Fatal(err) log.Fatal(err)
} }
mplusFaceSource = s
const dpi = 72
mplusNormalFont, err = opentype.NewFace(tt, &opentype.FaceOptions{
Size: 24,
DPI: dpi,
Hinting: font.HintingVertical,
})
if err != nil {
log.Fatal(err)
}
mplusBigFont, err = opentype.NewFace(tt, &opentype.FaceOptions{
Size: 48,
DPI: dpi,
Hinting: font.HintingFull, // Use quantization to save glyph cache images.
})
if err != nil {
log.Fatal(err)
}
// Adjust the line height.
mplusBigFont = text.FaceWithLineHeight(mplusBigFont, 54)
} }
func init() { func init() {
@ -128,8 +108,8 @@ func (g *Game) Update() error {
// Change the text color for each second. // Change the text color for each second.
if g.counter%ebiten.TPS() == 0 { if g.counter%ebiten.TPS() == 0 {
g.kanjiText = "" g.kanjiText = ""
for j := 0; j < 4; j++ { for j := 0; j < 6; j++ {
for i := 0; i < 8; i++ { for i := 0; i < 12; i++ {
g.kanjiText += string(jaKanjis[rand.Intn(len(jaKanjis))]) g.kanjiText += string(jaKanjis[rand.Intn(len(jaKanjis))])
} }
g.kanjiText += "\n" g.kanjiText += "\n"
@ -145,17 +125,41 @@ func (g *Game) Update() error {
} }
func (g *Game) Draw(screen *ebiten.Image) { func (g *Game) Draw(screen *ebiten.Image) {
const (
normalFontSize = 24
bigFontSize = 48
)
const x = 20 const x = 20
// Draw info // Draw info
msg := fmt.Sprintf("TPS: %0.2f", ebiten.ActualTPS()) msg := fmt.Sprintf("TPS: %0.2f", ebiten.ActualTPS())
text.Draw(screen, msg, mplusNormalFont, x, 40, color.White) op := &text.DrawOptions{}
op.GeoM.Translate(x, 20)
op.ColorScale.ScaleWithColor(color.White)
text.Draw(screen, msg, &text.GoTextFace{
Source: mplusFaceSource,
Size: normalFontSize,
}, op)
// Draw the sample text // Draw the sample text
text.Draw(screen, sampleText, mplusNormalFont, x, 80, color.White) op = &text.DrawOptions{}
op.GeoM.Translate(x, 60)
op.ColorScale.ScaleWithColor(color.White)
text.Draw(screen, sampleText, &text.GoTextFace{
Source: mplusFaceSource,
Size: normalFontSize,
}, op)
// Draw Kanji text lines // Draw Kanji text lines
text.Draw(screen, g.kanjiText, mplusBigFont, x, 160, g.kanjiTextColor) op = &text.DrawOptions{}
op.GeoM.Translate(x, 110)
op.ColorScale.ScaleWithColor(g.kanjiTextColor)
op.LineSpacingInPixels = bigFontSize * 1.2
text.Draw(screen, g.kanjiText, &text.GoTextFace{
Source: mplusFaceSource,
Size: bigFontSize,
}, op)
} }
func (g *Game) Layout(outsideWidth, outsideHeight int) (int, int) { func (g *Game) Layout(outsideWidth, outsideHeight int) (int, int) {