pdf/progress_control.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_PROGRESS_CONTROL_H_
   6 #define PDF_PROGRESS_CONTROL_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
  15 namespace chrome_pdf {
  16
  17 class ProgressControl : public FadingControl {
  18  public:
  19   static const double kCompleted;
  20
  21   enum ProgressEventIds {
  22     EVENT_ID_PROGRESS_COMPLETED,
  23   };
  24
  25   ProgressControl();
  26   virtual ~ProgressControl();
  27   virtual bool CreateProgressControl(uint32 id,
  28                                      bool visible,
  29                                      Control::Owner* delegate,
  30                                      double progress,
  31                                      float device_scale,
  32                                      const std::vector<pp::ImageData>& images,
  33                                      const pp::ImageData& background,
  34                                      const std::string& text);
  35   void Reconfigure(const pp::ImageData& background,
  36                    const std::vector<pp::ImageData>& images,
  37                    float device_scale);
  38
  39   static void CalculateLayout(pp::Instance* instance,
  40                               const std::vector<pp::ImageData>& images,
  41                               const pp::ImageData& background,
  42                               const std::string& text,
  43                               float device_scale,
  44                               pp::Size* ctrl_size,
  45                               pp::Rect* image_rc,
  46                               pp::Rect* text_rc);
  47
  48   // Control interface.
  49   virtual void Paint(pp::ImageData* image_data, const pp::Rect& rc);
  50
  51   // ProgressControl interface
  52   // Set progress indicator in percents from 0% to 100%.
  53   virtual void SetProgress(double progress);
  54
  55  private:
  56   void PrepareBackground();
  57   void AdjustBackground();
  58   size_t GetImageIngex() const;
  59
  60   double progress_;
  61   float device_scale_;
  62   std::vector<pp::ImageData> images_;
  63   pp::ImageData background_;
  64   pp::ImageData ctrl_background_;
  65   std::string text_;
  66   pp::Rect image_rc_;
  67   pp::Rect text_rc_;
  68 };
  69
  70 }  // namespace chrome_pdf
  71
  72 #endif  // PDF_PROGRESS_CONTROL_H_