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ebitenutil: DebugText always returns nil (#331)

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This commit is contained in:
Hajime Hoshi 2017-03-04 12:02:41 +09:00
parent a7d844ce5e
commit 283c8d41ca
2 changed files with 17 additions and 34 deletions
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39
ebitenutil/debugprint.go
View File

@ -60,11 +60,14 @@ type debugPrintState struct {
var defaultDebugPrintState = &debugPrintState{} var defaultDebugPrintState = &debugPrintState{}
// DebugPrint draws the string str on the image. // DebugPrint draws the string str on the image.
//
// DebugPrint always returns nil as of 1.5.0-alpha.
func DebugPrint(image *ebiten.Image, str string) error { func DebugPrint(image *ebiten.Image, str string) error {
return defaultDebugPrintState.DebugPrint(image, str) defaultDebugPrintState.DebugPrint(image, str)
return nil
} }
func (d *debugPrintState) drawText(rt *ebiten.Image, str string, x, y int, c color.Color) error { func (d *debugPrintState) drawText(rt *ebiten.Image, str string, x, y int, c color.Color) {
ur, ug, ub, ua := c.RGBA() ur, ug, ub, ua := c.RGBA()
const max = math.MaxUint16 const max = math.MaxUint16
r := float64(ur) / max r := float64(ur) / max
@ -81,37 +84,19 @@ func (d *debugPrintState) drawText(rt *ebiten.Image, str string, x, y int, c col
} }
op.GeoM.Translate(float64(x+1), float64(y)) op.GeoM.Translate(float64(x+1), float64(y))
op.ColorM.Scale(r, g, b, a) op.ColorM.Scale(r, g, b, a)
if err := rt.DrawImage(d.textImage, op); err != nil { _ = rt.DrawImage(d.textImage, op)
return err
}
return nil
} }
// DebugPrint prints the given text str on the given image r. // DebugPrint prints the given text str on the given image r.
func (d *debugPrintState) DebugPrint(r *ebiten.Image, str string) error { func (d *debugPrintState) DebugPrint(r *ebiten.Image, str string) {
if d.textImage == nil { if d.textImage == nil {
img, err := assets.TextImage() img := assets.TextImage()
if err != nil { d.textImage, _ = ebiten.NewImageFromImage(img, ebiten.FilterNearest)
return err
}
d.textImage, err = ebiten.NewImageFromImage(img, ebiten.FilterNearest)
if err != nil {
return err
}
} }
if d.debugPrintRenderTarget == nil { if d.debugPrintRenderTarget == nil {
width, height := 256, 256 width, height := 256, 256
var err error d.debugPrintRenderTarget, _ = ebiten.NewImage(width, height, ebiten.FilterNearest)
d.debugPrintRenderTarget, err = ebiten.NewImage(width, height, ebiten.FilterNearest)
if err != nil {
return err
}
} }
if err := d.drawText(r, str, 1, 1, color.NRGBA{0x00, 0x00, 0x00, 0x80}); err != nil { d.drawText(r, str, 1, 1, color.NRGBA{0x00, 0x00, 0x00, 0x80})
return err d.drawText(r, str, 0, 0, color.NRGBA{0xff, 0xff, 0xff, 0xff})
}
if err := d.drawText(r, str, 0, 0, color.NRGBA{0xff, 0xff, 0xff, 0xff}); err != nil {
return err
}
return nil
} }

12
ebitenutil/internal/assets/assets.go
View File

@ -19,6 +19,7 @@ package assets
import ( import (
"bytes" "bytes"
"fmt"
"image" "image"
_ "image/png" _ "image/png"
) )
@ -30,14 +31,11 @@ const (
TextImageCharHeight = TextImageHeight / 8 TextImageCharHeight = TextImageHeight / 8
) )
func TextImage() (image.Image, error) { func TextImage() image.Image {
b, err := Asset("text.png") b := MustAsset("text.png")
if err != nil {
return nil, err
}
img, _, err := image.Decode(bytes.NewBuffer(b)) img, _, err := image.Decode(bytes.NewBuffer(b))
if err != nil { if err != nil {
return nil, err panic(fmt.Sprintf("assets: image.Decode failed, %v", err))
} }
return img, nil return img
} }