KeyCode display sample

キーコード表示サンプル

by twface 04 Feb 2009

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// キーコード表示サンプル
package {
  import flash.display.*;
  import flash.text.*;
  import flash.events.*;
  import flash.ui.Keyboard;

  [SWF(width="465", height="465", backgroundColor="0x000000", frameRate="30")]
  public class KeySample extends Sprite {

    // テキスト表示部分
    private var textarea:TextField;

    public function KeySample() {
      var txtFmt:TextFormat = new TextFormat();
      txtFmt.font  = 'Courier New'; // 等幅フォント
      txtFmt.color = '0xFFFFFF';
      txtFmt.size  = 10;

      textarea = new TextField();
      textarea.defaultTextFormat = txtFmt;
      textarea.height = 465;
      textarea.width = 465;
      textarea.multiline = true;
      textarea.antiAliasType = AntiAliasType.ADVANCED;

      addChild(textarea);

      // キーボードイベントの登録
      stage.addEventListener(KeyboardEvent.KEY_DOWN, keyDownListener);
      stage.addEventListener(KeyboardEvent.KEY_UP, keyUpListener);

    }

    public function appendText(text:String):void {
      textarea.replaceText(0, 0, text + "\n");
    }

    public function keyDownListener(e:KeyboardEvent):void {
      e.preventDefault(); // しないと[PAGEDOWN]キーなどで表示が変化する
      var text:String = "KeyDown: " + keyToString(e);
      appendText(text);
    }

    public function keyUpListener(e:KeyboardEvent):void {
      e.preventDefault();
      var text:String = "KeyUp  : " + keyToString(e);
      appendText(text);
    }

    private function keyToString(e:KeyboardEvent):String {
        var char:String;
        switch (e.keyCode) {
        case Keyboard.BACKSPACE:
          char = '[BS]'; break;
        case Keyboard.CAPS_LOCK:
          char = '[CAPS]'; break;
        case Keyboard.CONTROL:
          char = '[CTRL]'; break;
        case Keyboard.DELETE:
          char = '[DELETE]'; break;
        case Keyboard.DOWN:
          char = '[↓]'; break;
        case Keyboard.END:
          char = '[END]'; break;
        case Keyboard.ENTER:
          char = '[ENTER]'; break;
        case Keyboard.ESCAPE:
          char = '[ESC]'; break;
        case Keyboard.F1:
          char = '[F1]'; break;
        case Keyboard.F2:
          char = '[F2]'; break;
        case Keyboard.F3:
          char = '[F3]'; break;
        case Keyboard.F4:
          char = '[F4]'; break;
        case Keyboard.F5:
          char = '[F5]'; break;
        case Keyboard.F6:
          char = '[F6]'; break;
        case Keyboard.F7:
          char = '[F7]'; break;
        case Keyboard.F8:
          char = '[F8]'; break;
        case Keyboard.F9:
          char = '[F9]'; break;
        case Keyboard.F10:
          char = '[F10]'; break;
        case Keyboard.F11:
          char = '[F11]'; break;
        case Keyboard.F12:
          char = '[F12]'; break;
        case Keyboard.F13:
          char = '[F13]'; break;
        case Keyboard.F14:
          char = '[F14]'; break;
        case Keyboard.F15:
          char = '[F15]'; break;
        case Keyboard.HOME:
          char = '[HOME]'; break;
        case Keyboard.INSERT:
          char = '[INS]'; break;
        case Keyboard.LEFT:
          char = '[←]'; break;
        case Keyboard.PAGE_DOWN:
          char = '[PAGEDOWN]'; break;
        case Keyboard.PAGE_UP:
          char = '[PAGEUP]'; break;
        case Keyboard.RIGHT:
          char = '[→]'; break;
        case Keyboard.SHIFT:
          char = '[SHIFT]'; break;
        case Keyboard.SPACE:
          char = '[SPACE]'; break;
        case Keyboard.TAB:
          char = '[TAB]'; break;
        case Keyboard.UP:
          char = '[↑]'; break;
        case 18:
          char = '[ALT]'; break;
        case 19:
          char = '[Pause]'; break;
        case 44:
          char = '[PrintScreen]'; break;
        case 91:
        case 92:
          char = '[Win]'; break;
        case 93:
          char = '[App]'; break;
        case 229:
          char = '[全角/半角]'; break;
          /*
        case Keyboard.XXX:
          char = '[XXX]'; break;
          */
        default: 
          {
            var code:uint = e.charCode;
            char = (code != 0) ? String.fromCharCode(e.charCode) : "-";
          }
        }
        return char + " (" + e.keyCode + ")";
    }
  }
}