<!DOCTYPE html> <meta charset="utf-8"> <meta property="og:image" itemprop="image primaryImageOfPage" content="https://hajimehoshi.github.io/ebiten/images/examples/keyboard.png"> <meta name="description" content="Ebiten example - keyboard"> <link rel="shortcut icon" href="../favicon.png" type="image/png" > <link rel="icon" href="../favicon.png" type="image/png" > <title>Ebiten example - keyboard</title> <link rel="stylesheet" href="../stylesheets/bootstrap.min.css"> <link rel="stylesheet" href="../stylesheets/highlight-github.css"> <link rel="stylesheet" href="../stylesheets/ebiten.css"> <script src="../scripts/googleanalytics.js"></script> <nav class="navbar"><div class="container"> <nav class="d-flex flex-row" style="width: 100%;"> <div class="nav mr-auto"><a class="navbar-brand" href="../"><img src="../images/logo_white.svg" alt="EBITEN"></a></div> <ul class="nav"> <li class="nav-item"><a class="nav-link" href="https://github.com/hajimehoshi/ebiten">GitHub</a></li> <li class="nav-item"><a class="nav-link" href="https://godoc.org/github.com/hajimehoshi/ebiten">GoDoc</a></li> <li class="nav-item"><a class="nav-link" href="https://github.com/hajimehoshi/ebiten/wiki">Wiki</a> <li class="nav-item"><a class="nav-link" href="https://ebiten-playground.github.io/">Playground</a> </ul> </nav> </div></nav> <main><div class="container"> <h2>Ebiten example - keyboard</h2> <iframe src="keyboard.content.html" width="640" height="480"></iframe> <div class="card"><pre class="card-body"><code class="language-go">// +build example package main import ( "log" "strconv" "github.com/hajimehoshi/ebiten" "github.com/hajimehoshi/ebiten/ebitenutil" "github.com/hajimehoshi/ebiten/examples/keyboard/keyboard" ) const ( screenWidth = 320 screenHeight = 240 ) var keyboardImage *ebiten.Image func init() { var err error keyboardImage, _, err = ebitenutil.NewImageFromFile("_resources/images/keyboard/keyboard.png", ebiten.FilterNearest) if err != nil { log.Fatal(err) } } var keyNames = map[ebiten.Key]string{ ebiten.KeyBackspace: "BS", ebiten.KeyComma: ",", ebiten.KeyEnter: "Enter", ebiten.KeyEscape: "Esc", ebiten.KeyPeriod: ".", ebiten.KeySpace: "Space", ebiten.KeyTab: "Tab", ebiten.KeyMinus: "-", ebiten.KeyEqual: "=", ebiten.KeyBackslash: "\\", ebiten.KeyGraveAccent: "`", ebiten.KeyLeftBracket: "[", ebiten.KeyRightBracket: "]", ebiten.KeySemicolon: ";", ebiten.KeyApostrophe: "'", ebiten.KeySlash: "/", // Arrows ebiten.KeyDown: "Down", ebiten.KeyLeft: "Left", ebiten.KeyRight: "Right", ebiten.KeyUp: "Up", // Mods ebiten.KeyShift: "Shift", ebiten.KeyControl: "Ctrl", ebiten.KeyAlt: "Alt", } func update(screen *ebiten.Image) error { // Collect pressed keys' names. pressed := []string{} for i := 0; i <= 9; i++ { if ebiten.IsKeyPressed(ebiten.Key(i) + ebiten.Key0) { pressed = append(pressed, string(i+'0')) } } for c := 'A'; c <= 'Z'; c++ { if ebiten.IsKeyPressed(ebiten.KeyA + ebiten.Key(c-'A')) { pressed = append(pressed, string(c)) } } for i := 1; i <= 12; i++ { if ebiten.IsKeyPressed(ebiten.KeyF1 + ebiten.Key(i-1)) { pressed = append(pressed, "F"+strconv.Itoa(i)) } } for key, name := range keyNames { if ebiten.IsKeyPressed(key) { pressed = append(pressed, name) } } if ebiten.IsRunningSlowly() { return nil } const ( offsetX = 24 offsetY = 40 ) // Draw the base (grayed) keyboard image. op := &ebiten.DrawImageOptions{} op.GeoM.Translate(offsetX, offsetY) op.ColorM.Scale(0.5, 0.5, 0.5, 1) screen.DrawImage(keyboardImage, op) // Draw the highlighted keys. op = &ebiten.DrawImageOptions{} for _, p := range pressed { op.GeoM.Reset() r, ok := keyboard.KeyRect(p) if !ok { continue } op.GeoM.Translate(float64(r.Min.X), float64(r.Min.Y)) op.GeoM.Translate(offsetX, offsetY) op.SourceRect = &r screen.DrawImage(keyboardImage, op) } return nil } func main() { if err := ebiten.Run(update, screenWidth, screenHeight, 2, "Keyboard (Ebiten Demo)"); err != nil { log.Fatal(err) } } </code></pre></div> </div></main> <footer><div class="container"> <p>© 2013 Hajime Hoshi</p> <p>Code is licensed under <a href="https://github.com/hajimehoshi/ebiten/blob/master/LICENSE">the Apache License 2.0</a>.</p> <p>The content of this page is licensed under <a href="https://creativecommons.org/licenses/by/4.0/">the Creative Commons Attribution 4.0 License</a>.</p> </div></footer> <script src="../scripts/highlight.pack.js"></script> <script>hljs.initHighlightingOnLoad();</script>