Add private PPAPI interfaces for PDFium accessibility.

pdf/pdfium/pdfium_engine.cc

 // Copyright (c) 2012 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_engine.h"
 
 #include <math.h>
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 2252 matching lines @@
   return most_visible_page_;
 }
 
 pp::Rect PDFiumEngine::GetPageRect(int index) {
   pp::Rect rc(pages_[index]->rect());
   rc.Inset(-kPageShadowLeft, -kPageShadowTop,
            -kPageShadowRight, -kPageShadowBottom);
   return rc;
 }
 
+pp::Rect PDFiumEngine::GetPageBoundsRect(int index) {
+  return pages_[index]->rect();
+}
+
 pp::Rect PDFiumEngine::GetPageContentsRect(int index) {
   return GetScreenRect(pages_[index]->rect());
 }
 
 void PDFiumEngine::SetGrayscale(bool grayscale) {
   render_grayscale_ = grayscale;
 }
 
 void PDFiumEngine::OnCallback(int id) {
   if (!timers_.count(id))
@@ skipping 13 matching lines @@
   if (index < 0 || static_cast<size_t>(index) > pages_.size() - 1)
     return "{}";
 
   std::unique_ptr<base::Value> node(
       pages_[index]->GetAccessibleContentAsValue(current_rotation_));
   std::string page_json;
   base::JSONWriter::Write(*node, &page_json);
   return page_json;
 }
 
+int PDFiumEngine::GetCharCount(int page_index) {
+  DCHECK(page_index >= 0 && page_index < static_cast<int>(pages_.size()));
+  return pages_[page_index]->GetCharCount();
+}
+
+double PDFiumEngine::GetCharWidth(int page_index, int char_index) {
+  DCHECK(page_index >= 0 && page_index < static_cast<int>(pages_.size()));
+  return pages_[page_index]->GetCharWidth(char_index);
+}
+
+uint32_t PDFiumEngine::GetCharUnicode(int page_index, int char_index) {
+  DCHECK(page_index >= 0 && page_index < static_cast<int>(pages_.size()));
+  return pages_[page_index]->GetCharUnicode(char_index);
+}
+
+void PDFiumEngine::GetTextRunInfo(int page_index,
+                                  int start_char_index,
+                                  uint32_t* out_len,
+                                  double* out_font_size,
+                                  pp::FloatRect* out_bounds) {
+  DCHECK(page_index >= 0 && page_index < static_cast<int>(pages_.size()));
+  return pages_[page_index]->GetTextRunInfo(start_char_index, out_len,
+                                            out_font_size, out_bounds);
+}
+
 bool PDFiumEngine::GetPrintScaling() {
   return !!FPDF_VIEWERREF_GetPrintScaling(doc_);
 }
 
 int PDFiumEngine::GetCopiesToPrint() {
   return FPDF_VIEWERREF_GetNumCopies(doc_);
 }
 
 int PDFiumEngine::GetDuplexType() {
   return static_cast<int>(FPDF_VIEWERREF_GetDuplex(doc_));
@@ skipping 1554 matching lines @@
   FPDF_DOCUMENT doc =
       FPDF_LoadMemDocument(pdf_buffer, pdf_buffer_size, nullptr);
   if (!doc)
     return false;
   bool success = FPDF_GetPageSizeByIndex(doc, page_number, width, height) != 0;
   FPDF_CloseDocument(doc);
   return success;
 }
 
 }  // namespace chrome_pdf