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examples/ui: use text/v2

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Updates #2454
This commit is contained in:
Hajime Hoshi 2023-11-15 22:52:56 +09:00
parent 9c95b4accc
commit 2641f65863
1 changed files with 47 additions and 38 deletions
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83
examples/ui/main.go
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@ -22,23 +22,22 @@ import (
"log"
"strings"
"golang.org/x/image/font"
"golang.org/x/image/font/gofont/goregular"
"golang.org/x/image/font/opentype"
"github.com/hajimehoshi/ebiten/v2"
"github.com/hajimehoshi/ebiten/v2/examples/resources/images"
"github.com/hajimehoshi/ebiten/v2/inpututil"
"github.com/hajimehoshi/ebiten/v2/text"
"github.com/hajimehoshi/ebiten/v2/text/v2"
)
const (
uiFontSize = 12
lineHeight = 16
)
var (
uiImage *ebiten.Image
uiFont font.Face
uiFaceSource *text.GoTextFaceSource
)
func init() {
@ -48,19 +47,14 @@ func init() {
log.Fatal(err)
}
uiImage = ebiten.NewImageFromImage(img)
}
tt, err := opentype.Parse(goregular.TTF)
if err != nil {
log.Fatal(err)
}
uiFont, err = opentype.NewFace(tt, &opentype.FaceOptions{
Size: 12,
DPI: 72,
Hinting: font.HintingVertical,
})
func init() {
s, err := text.NewGoTextFaceSource(bytes.NewReader(goregular.TTF))
if err != nil {
log.Fatal(err)
}
uiFaceSource = s
}
type imageType int
@ -183,12 +177,16 @@ func (b *Button) Draw(dst *ebiten.Image) {
}
drawNinePatches(dst, b.Rect, imageSrcRects[t])
m := uiFont.Metrics()
w := font.MeasureString(uiFont, b.Text).Floor()
h := (m.Ascent + m.Descent).Floor()
x := b.Rect.Min.X + (b.Rect.Dx()-w)/2
y := b.Rect.Min.Y + (b.Rect.Dy()-h)/2 + m.Ascent.Floor()
text.Draw(dst, b.Text, uiFont, x, y, color.Black)
op := &text.DrawOptions{}
op.GeoM.Translate(float64(b.Rect.Min.X+b.Rect.Max.X)/2, float64(b.Rect.Min.Y+b.Rect.Max.Y)/2)
op.ColorScale.ScaleWithColor(color.Black)
op.LineHeight = lineHeight
op.PrimaryAlign = text.AlignCenter
op.SecondaryAlign = text.AlignCenter
text.Draw(dst, b.Text, &text.GoTextFace{
Source: uiFaceSource,
Size: uiFontSize,
}, op)
}
func (b *Button) SetOnPressed(f func(b *Button)) {
@ -285,6 +283,7 @@ func (v *VScrollBar) Draw(dst *ebiten.Image) {
const (
textBoxPaddingLeft = 8
textBoxPaddingTop = 4
)
type TextBox struct {
@ -321,7 +320,7 @@ func (t *TextBox) Update() {
}
func (t *TextBox) contentSize() (int, int) {
h := len(strings.Split(t.Text, "\n")) * lineHeight
h := len(strings.Split(t.Text, "\n"))*lineHeight + textBoxPaddingTop
return t.Rect.Dx(), h
}
@ -352,18 +351,17 @@ func (t *TextBox) Draw(dst *ebiten.Image) {
}
t.contentBuf.Clear()
m := uiFont.Metrics()
for i, line := range strings.Split(t.Text, "\n") {
x := -t.offsetX + textBoxPaddingLeft
y := -t.offsetY + i*lineHeight + (lineHeight-(m.Ascent+m.Descent).Floor())/2 + m.Ascent.Floor()
if y < -lineHeight {
continue
}
if _, h := t.viewSize(); y >= h+lineHeight {
continue
}
text.Draw(t.contentBuf, line, uiFont, x, y, color.Black)
}
textOp := &text.DrawOptions{}
x := -float64(t.offsetX) + textBoxPaddingLeft
y := -float64(t.offsetY) + textBoxPaddingTop
textOp.GeoM.Translate(x, y)
textOp.ColorScale.ScaleWithColor(color.Black)
textOp.LineHeight = lineHeight
text.Draw(t.contentBuf, t.Text, &text.GoTextFace{
Source: uiFaceSource,
Size: uiFontSize,
}, textOp)
op := &ebiten.DrawImageOptions{}
op.GeoM.Translate(float64(t.Rect.Min.X), float64(t.Rect.Min.Y))
dst.DrawImage(t.contentBuf, op)
@ -389,8 +387,11 @@ type CheckBox struct {
}
func (c *CheckBox) width() int {
w := font.MeasureString(uiFont, c.Text).Floor()
return checkboxWidth + checkboxPaddingLeft + w
w := text.Advance(c.Text, &text.GoTextFace{
Source: uiFaceSource,
Size: uiFontSize,
})
return checkboxWidth + checkboxPaddingLeft + int(w)
}
func (c *CheckBox) Update() {
@ -423,10 +424,18 @@ func (c *CheckBox) Draw(dst *ebiten.Image) {
drawNinePatches(dst, r, imageSrcRects[imageTypeCheckBoxMark])
}
m := uiFont.Metrics()
x := c.X + checkboxWidth + checkboxPaddingLeft
y := c.Y + (checkboxHeight-(m.Ascent+m.Descent).Floor())/2 + m.Ascent.Floor()
text.Draw(dst, c.Text, uiFont, x, y, color.Black)
y := c.Y + checkboxHeight/2
op := &text.DrawOptions{}
op.GeoM.Translate(float64(x), float64(y))
op.ColorScale.ScaleWithColor(color.Black)
op.LineHeight = lineHeight
op.PrimaryAlign = text.AlignStart
op.SecondaryAlign = text.AlignCenter
text.Draw(dst, c.Text, &text.GoTextFace{
Source: uiFaceSource,
Size: uiFontSize,
}, op)
}
func (c *CheckBox) Checked() bool {