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examples/keyboard: Use TTF font directly instead of examples/common
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@ -17,18 +17,58 @@
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package main
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import (
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"errors"
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"image"
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"image/color"
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"image/draw"
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"image/png"
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"io/ioutil"
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"log"
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"os"
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"path/filepath"
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"text/template"
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"github.com/hajimehoshi/ebiten/examples/common"
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"github.com/golang/freetype/truetype"
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"golang.org/x/image/font"
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"github.com/hajimehoshi/ebiten"
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"github.com/hajimehoshi/ebiten/ebitenutil"
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"github.com/hajimehoshi/ebiten/internal"
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"github.com/hajimehoshi/ebiten/text"
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)
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const (
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arcadeFontSize = 8
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)
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var (
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arcadeFont font.Face
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)
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func init() {
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f, err := ebitenutil.OpenFile(filepath.Join("..", "..", "_resources", "fonts", "arcade_n.ttf"))
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if err != nil {
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log.Fatal(err)
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}
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defer f.Close()
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b, err := ioutil.ReadAll(f)
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if err != nil {
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log.Fatal(err)
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}
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tt, err := truetype.Parse(b)
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if err != nil {
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log.Fatal(err)
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}
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const dpi = 72
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arcadeFont = truetype.NewFace(tt, &truetype.Options{
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Size: arcadeFontSize,
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DPI: dpi,
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Hinting: font.HintingFull,
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})
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}
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var keyboardKeys = [][]string{
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{"Esc", "1", "2", "3", "4", "5", "6", "7", "8", "9", "0", "-", "=", "\\", "`", " "},
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{"Tab", "Q", "W", "E", "R", "T", "Y", "U", "I", "O", "P", "[", "]", "BS"},
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@ -40,11 +80,11 @@ var keyboardKeys = [][]string{
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{"Left", "Down", "Right"},
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}
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func drawKey(t *image.NRGBA, name string, x, y, width int) {
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func drawKey(t *ebiten.Image, name string, x, y, width int) {
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const height = 16
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width--
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shape := image.NewNRGBA(image.Rect(0, 0, width, height))
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p := shape.Pix
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img, _ := ebiten.NewImage(width, height, ebiten.FilterNearest)
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p := make([]byte, width*height*4)
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for j := 0; j < height; j++ {
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for i := 0; i < width; i++ {
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x := (i + j*width) * 4
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@ -80,13 +120,18 @@ func drawKey(t *image.NRGBA, name string, x, y, width int) {
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}
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}
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}
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draw.Draw(t, image.Rect(x, y, x+width, y+height), shape, image.ZP, draw.Over)
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common.ArcadeFont.DrawTextOnImage(t, name, x+4, y+5)
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img.ReplacePixels(p)
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const offset = 4
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text.Draw(img, name, arcadeFont, offset, arcadeFontSize+offset, color.White)
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op := &ebiten.DrawImageOptions{}
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op.GeoM.Translate(float64(x), float64(y))
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t.DrawImage(img, op)
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}
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func outputKeyboardImage() (map[string]image.Rectangle, error) {
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keyMap := map[string]image.Rectangle{}
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img := image.NewNRGBA(image.Rect(0, 0, 320, 240))
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img, _ := ebiten.NewImage(320, 240, ebiten.FilterNearest)
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x, y := 0, 0
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for j, line := range keyboardKeys {
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x = 0
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@ -130,18 +175,13 @@ func outputKeyboardImage() (map[string]image.Rectangle, error) {
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y += height
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}
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palette := color.Palette([]color.Color{
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color.Transparent, color.Opaque,
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})
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palettedImg := image.NewPaletted(img.Bounds(), palette)
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draw.Draw(palettedImg, palettedImg.Bounds(), img, image.ZP, draw.Src)
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f, err := os.Create("../../_resources/images/keyboard/keyboard.png")
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f, err := os.Create(filepath.Join("..", "..", "_resources", "images", "keyboard", "keyboard.png"))
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if err != nil {
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return nil, err
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}
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defer f.Close()
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if err := png.Encode(f, palettedImg); err != nil {
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if err := png.Encode(f, img); err != nil {
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return nil, err
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}
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return keyMap, nil
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@ -194,12 +234,21 @@ func outputKeyRectsGo(k map[string]image.Rectangle) error {
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})
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}
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var regularTermination = errors.New("regular termination")
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func main() {
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m, err := outputKeyboardImage()
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if err != nil {
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var rects map[string]image.Rectangle
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if err := ebiten.Run(func(_ *ebiten.Image) error {
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var err error
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rects, err = outputKeyboardImage()
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if err != nil {
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return err
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}
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return regularTermination
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}, 256, 256, 1, ""); err != regularTermination {
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log.Fatal(err)
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}
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if err := outputKeyRectsGo(m); err != nil {
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if err := outputKeyRectsGo(rects); err != nil {
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log.Fatal(err)
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}
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}
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