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      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_PAGE_INDICATOR_H_
      6 #define PDF_PAGE_INDICATOR_H_
      7 
      8 #include <string>
      9 #include <vector>
     10 
     11 #include "pdf/control.h"
     12 #include "pdf/fading_control.h"
     13 #include "ppapi/cpp/image_data.h"
     14 #include "ppapi/cpp/point.h"
     15 #include "ppapi/cpp/rect.h"
     16 
     17 namespace chrome_pdf {
     18 
     19 class NumberImageGenerator;
     20 
     21 const uint32 kPageIndicatorScrollFadeTimeoutMs = 240;
     22 const uint32 kPageIndicatorInitialFadeTimeoutMs = 960;
     23 const uint32 kPageIndicatorSplashTimeoutMs = 2000;
     24 
     25 class PageIndicator : public FadingControl {
     26  public:
     27   PageIndicator();
     28   virtual ~PageIndicator();
     29   virtual bool CreatePageIndicator(
     30       uint32 id,
     31       bool visible,
     32       Control::Owner* delegate,
     33       NumberImageGenerator* number_image_generator,
     34       bool always_visible);
     35 
     36   void Configure(const pp::Point& origin, const pp::ImageData& background);
     37 
     38   int current_page() const { return current_page_; }
     39   void set_current_page(int current_page);
     40 
     41   virtual void Splash();
     42   void Splash(uint32 splash_timeout, uint32 page_timeout);
     43 
     44   // Returns the y position where the page indicator should be drawn given the
     45   // position of the scrollbar and the total document height and the plugin
     46   // height.
     47   int GetYPosition(
     48       int vertical_scrollbar_y, int document_height, int plugin_height);
     49 
     50   // Control interface.
     51   virtual void Paint(pp::ImageData* image_data, const pp::Rect& rc);
     52   virtual void OnTimerFired(uint32 timer_id);
     53 
     54   // FadingControl interface.
     55   virtual void OnFadeInComplete();
     56 
     57  private:
     58   void ResetFadeOutTimer();
     59 
     60   int current_page_;
     61   pp::ImageData background_;
     62   NumberImageGenerator* number_image_generator_;
     63   uint32 fade_out_timer_id_;
     64   uint32 splash_timeout_;
     65   uint32 fade_timeout_;
     66 
     67   bool always_visible_;
     68 };
     69 
     70 }  // namespace chrome_pdf
     71 
     72 #endif  // PDF_PAGE_INDICATOR_H_
     73