ebiten: add KeyName (WIP)

Updates #1904

examples/keyboard/main.go

@@ -78,11 +78,13 @@ func (g *Game) Draw(screen *ebiten.Image) {
 		screen.DrawImage(keyboardImage.SubImage(r).(*ebiten.Image), op)
 	}
 
-	keyStrs := []string{}
+	var keyStrs []string
+	var keyNames []string
 	for _, k := range g.keys {
 		keyStrs = append(keyStrs, k.String())
+		keyNames = append(keyNames, ebiten.KeyName(k))
 	}
-	ebitenutil.DebugPrint(screen, strings.Join(keyStrs, ", "))
+	ebitenutil.DebugPrint(screen, strings.Join(keyStrs, ", ")+"\n"+strings.Join(keyNames, ", "))
 }
 
 func (g *Game) Layout(outsideWidth, outsideHeight int) (int, int) {

input.go

@@ -69,6 +69,10 @@ func IsKeyPressed(key Key) bool {
 	return theInputState.isKeyPressed(key)
 }
 
+func KeyName(key Key) string {
+	return ui.KeyName(ui.Key(key))
+}
+
 // CursorPosition returns a position of a mouse cursor relative to the game screen (window). The cursor position is
 // 'logical' position and this considers the scale of the screen.
 //

internal/glfw/glfw_notwindows.go

@@ -273,6 +273,10 @@ func CreateWindow(width, height int, title string, monitor *Monitor, share *Wind
 	return theWindows.add(w), nil
 }
 
+func GetKeyName(key Key, scancode int) string {
+	return glfw.GetKeyName(glfw.Key(key), scancode)
+}
+
 func GetMonitors() []*Monitor {
 	ms := []*Monitor{}
 	for _, m := range glfw.GetMonitors() {

internal/ui/input_glfw.go

@@ -76,3 +76,11 @@ func (u *userInterfaceImpl) updateInputState() error {
 	}
 	return nil
 }
+
+func KeyName(key Key) string {
+	gk, ok := uiKeyToGLFWKey[key]
+	if !ok {
+		return ""
+	}
+	return glfw.GetKeyName(gk, 0)
+}