Add private PPAPI interfaces for PDFium accessibility.

pdf/out_of_process_instance.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/out_of_process_instance.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>  // for min/max()
@@ skipping 188 matching lines @@
     PP_PdfPrintPresetOptions_Dev* options) {
   void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
   if (object) {
     OutOfProcessInstance* obj_instance =
         static_cast<OutOfProcessInstance*>(object);
     obj_instance->GetPrintPresetOptionsFromDocument(options);
   }
   return PP_TRUE;
 }
 
+void EnableAccessibility(PP_Instance instance) {
+  void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
+  if (object) {
+    OutOfProcessInstance* obj_instance =
+        static_cast<OutOfProcessInstance*>(object);
+    return obj_instance->EnableAccessibility();
+  }
+}
+
 const PPP_Pdf ppp_private = {
   &GetLinkAtPosition,
   &Transform,
-  &GetPrintPresetOptionsFromDocument
+  &GetPrintPresetOptionsFromDocument,
+  &EnableAccessibility,
 };
 
 int ExtractPrintPreviewPageIndex(const std::string& src_url) {
   // Sample |src_url| format: chrome://print/id/page_index/print.pdf
   std::vector<std::string> url_substr = base::SplitString(
       src_url.substr(strlen(kChromePrint)), "/",
       base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
   if (url_substr.size() != 3)
     return -1;
 
@@ skipping 384 matching lines @@
   options->is_scaling_disabled = PP_FromBool(IsPrintScalingDisabled());
   options->duplex =
       static_cast<PP_PrivateDuplexMode_Dev>(engine_->GetDuplexType());
   options->copies = engine_->GetCopiesToPrint();
   pp::Size uniform_page_size;
   options->is_page_size_uniform =
       PP_FromBool(engine_->GetPageSizeAndUniformity(&uniform_page_size));
   options->uniform_page_size = uniform_page_size;
 }
 
+void OutOfProcessInstance::EnableAccessibility() {
+  engine_->EnableAccessibility();
+}
+
 pp::Var OutOfProcessInstance::GetLinkAtPosition(
     const pp::Point& point) {
   pp::Point offset_point(point);
   ScalePoint(device_scale_, &offset_point);
   offset_point.set_x(offset_point.x() - available_area_.x());
   return engine_->GetLinkAtPosition(offset_point);
 }
 
 uint32_t OutOfProcessInstance::QuerySupportedPrintOutputFormats() {
   return engine_->QuerySupportedPrintOutputFormats();
@@ skipping 760 matching lines @@
   return background_color_;
 }
 
 void OutOfProcessInstance::IsSelectingChanged(bool is_selecting) {
   pp::VarDictionary message;
   message.Set(kType, kJSSetIsSelectingType);
   message.Set(kJSIsSelecting, pp::Var(is_selecting));
   PostMessage(message);
 }
 
+int OutOfProcessInstance::GetToolbarHeight() {
+  return top_toolbar_height_ * device_scale_;
+}
+
 void OutOfProcessInstance::ProcessPreviewPageInfo(const std::string& url,
                                                   int dst_page_index) {
   if (!IsPrintPreview())
     return;
 
   int src_page_index = ExtractPrintPreviewPageIndex(url);
   if (src_page_index < 1)
     return;
 
   preview_pages_info_.push(std::make_pair(url, dst_page_index));
@@ skipping 29 matching lines @@
     const pp::FloatPoint& scroll_offset) {
   float max_x = document_size_.width() * zoom_ - plugin_dip_size_.width();
   float x = std::max(std::min(scroll_offset.x(), max_x), 0.0f);
   float min_y = -top_toolbar_height_;
   float max_y = document_size_.height() * zoom_ - plugin_dip_size_.height();
   float y = std::max(std::min(scroll_offset.y(), max_y), min_y);
   return pp::FloatPoint(x, y);
 }
 
 }  // namespace chrome_pdf