chrome/browser/speech/speech_recognition_tray_icon_controller.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_SPEECH_SPEECH_RECOGNITION_TRAY_ICON_CONTROLLER_H_
   6 #define CHROME_BROWSER_SPEECH_SPEECH_RECOGNITION_TRAY_ICON_CONTROLLER_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/string16.h"
  11
  12 class Extension;
  13 class SkBitmap;
  14 class SkCanvas;
  15 class StatusIcon;
  16
  17 namespace gfx {
  18 class ImageSkia;
  19 }
  20
  21 // Manages the tray icon for speech recognition.
  22 class SpeechRecognitionTrayIconController
  23      : public base::RefCountedThreadSafe<SpeechRecognitionTrayIconController> {
  24  public:
  25   SpeechRecognitionTrayIconController();
  26
  27   void Show(const string16& tooltip, bool show_balloon);
  28   void Hide();
  29   void SetVUMeterVolume(float volume);
  30
  31  private:
  32   friend class base::RefCountedThreadSafe<SpeechRecognitionTrayIconController>;
  33   virtual ~SpeechRecognitionTrayIconController();
  34
  35   void Initialize();
  36   void DrawVolume(SkCanvas* canvas, const gfx::ImageSkia& image, float volume);
  37   void ShowNotificationBalloon(const string16& text);
  38
  39   scoped_ptr<SkBitmap> mic_image_;
  40   scoped_ptr<SkBitmap> buffer_image_;
  41   StatusIcon* tray_icon_;
  42 };
  43
  44 #endif  // CHROME_BROWSER_SPEECH_SPEECH_RECOGNITION_TRAY_ICON_CONTROLLER_H_