Add the pdf plugin's source in src\pdf.

pdf/pdfium/pdfium_range.cc

+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "pdf/pdfium/pdfium_range.h"
+
+#include "base/logging.h"
+#include "base/strings/string_util.h"
+
+namespace chrome_pdf {
+
+PDFiumRange::PDFiumRange(PDFiumPage* page, int char_index, int char_count)
+    : page_(page),
+      char_index_(char_index),
+      char_count_(char_count),
+      cached_screen_rects_zoom_(0) {
+}
+
+PDFiumRange::~PDFiumRange() {
+}
+
+void PDFiumRange::SetCharCount(int char_count) {
+  char_count_ = char_count;
+
+  cached_screen_rects_offset_ = pp::Point();
+  cached_screen_rects_zoom_ = 0;
+}
+
+std::vector<pp::Rect> PDFiumRange::GetScreenRects(const pp::Point& offset,
+                                                  double zoom,
+                                                  int rotation) {
+  if (offset == cached_screen_rects_offset_ &&
+      zoom == cached_screen_rects_zoom_) {
+    return cached_screen_rects_;
+  }
+
+  cached_screen_rects_.clear();
+  cached_screen_rects_offset_ = offset;
+  cached_screen_rects_zoom_ = zoom;
+
+  int char_index = char_index_;
+  int char_count = char_count_;
+  if (char_count < 0) {
+    char_count *= -1;
+    char_index -= char_count - 1;
+  }
+
+  int count = FPDFText_CountRects(page_->GetTextPage(), char_index, char_count);
+  for (int i = 0; i < count; ++i) {
+    double left, top, right, bottom;
+    FPDFText_GetRect(page_->GetTextPage(), i, &left, &top, &right, &bottom);
+    cached_screen_rects_.push_back(
+        page_->PageToScreen(offset, zoom, left, top, right, bottom, rotation));
+  }
+
+  return cached_screen_rects_;
+}
+
+base::string16 PDFiumRange::GetText() {
+  int index = char_index_;
+  int count = char_count_;
+  if (!count)
+    return base::string16();
+  if (count < 0) {
+    count *= -1;
+    index -= count - 1;
+  }
+
+  base::string16 rv;
+  unsigned short* data =
+      reinterpret_cast<unsigned short*>(WriteInto(&rv, count + 1));
+  if (data) {
+    int written = FPDFText_GetText(page_->GetTextPage(), index, count, data);
+    rv.reserve(written);
+  }
+  return rv;
+}
+
+}  // namespace chrome_pdf