pdf/pdfium/pdfium_range.h

   1 // Copyright (c) 2010 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_PDFIUM_PDFIUM_RANGE_H_
   6 #define PDF_PDFIUM_PDFIUM_RANGE_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/strings/string16.h"
  12 #include "pdf/pdfium/pdfium_page.h"
  13 #include "ppapi/cpp/rect.h"
  14
  15 namespace chrome_pdf {
  16
  17 // Describes location of a string of characters.
  18 class PDFiumRange {
  19  public:
  20   PDFiumRange(PDFiumPage* page, int char_index, int char_count);
  21   ~PDFiumRange();
  22
  23   // Update how many characters are in the selection.  Could be negative if
  24   // backwards.
  25   void SetCharCount(int char_count);
  26
  27   int page_index() const { return page_->index(); }
  28   int char_index() const { return char_index_; }
  29   int char_count() const { return char_count_; }
  30
  31   // Gets bounding rectangles of range in screen coordinates.
  32   std::vector<pp::Rect> GetScreenRects(const pp::Point& offset,
  33                                        double zoom,
  34                                        int rotation);
  35
  36   // Gets the string of characters in this range.
  37   base::string16 GetText();
  38
  39  private:
  40   PDFiumPage* page_;
  41   // Index of first character.
  42   int char_index_;
  43   // How many characters are part of this range (negative if  backwards).
  44   int char_count_;
  45
  46   // Cache of ScreenRect, and the associated variables used when caching it.
  47   std::vector<pp::Rect> cached_screen_rects_;
  48   pp::Point cached_screen_rects_offset_;
  49   double cached_screen_rects_zoom_;
  50 };
  51
  52 }  // namespace chrome_pdf
  53
  54 #endif  // PDF_PDFIUM_PDFIUM_RANGE_H_