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      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_
     55