pdf/page_indicator.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 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_