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 PDF_FADING_CONTROL_H_ 6 #define PDF_FADING_CONTROL_H_ 7 8 #include "pdf/control.h" 9 10 namespace chrome_pdf { 11 12 class FadingControl : public Control { 13 public: 14 FadingControl(); 15 virtual ~FadingControl(); 16 17 virtual void OnTimerFired(uint32 timer_id); 18 19 // Fade In/Out control depending on visible flag over the time of time_ms. 20 virtual void Fade(bool visible, uint32 time_ms); 21 22 virtual void OnFadeInComplete() {} 23 virtual void OnFadeOutComplete() {} 24 25 private: 26 int alpha_shift_; 27 uint32 timer_id_; 28 }; 29 30 } // namespace chrome_pdf 31 32 #endif // PDF_FADING_CONTROL_H_ 33
