pdf/out_of_process_instance.cc

   1 // Copyright (c) 2012 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 #include "pdf/out_of_process_instance.h"
   6
   7 #include <algorithm>  // for min/max()
   8 #define _USE_MATH_DEFINES  // for M_PI
   9 #include <cmath>      // for log() and pow()
  10 #include <math.h>
  11 #include <list>
  12
  13 #include "base/json/json_reader.h"
  14 #include "base/json/json_writer.h"
  15 #include "base/logging.h"
  16 #include "base/strings/string_number_conversions.h"
  17 #include "base/strings/string_split.h"
  18 #include "base/strings/string_util.h"
  19 #include "base/values.h"
  20 #include "chrome/common/content_restriction.h"
  21 #include "net/base/escape.h"
  22 #include "pdf/pdf.h"
  23 #include "ppapi/c/dev/ppb_cursor_control_dev.h"
  24 #include "ppapi/c/pp_errors.h"
  25 #include "ppapi/c/pp_rect.h"
  26 #include "ppapi/c/private/ppb_instance_private.h"
  27 #include "ppapi/c/private/ppp_pdf.h"
  28 #include "ppapi/c/trusted/ppb_url_loader_trusted.h"
  29 #include "ppapi/cpp/core.h"
  30 #include "ppapi/cpp/dev/memory_dev.h"
  31 #include "ppapi/cpp/dev/text_input_dev.h"
  32 #include "ppapi/cpp/dev/url_util_dev.h"
  33 #include "ppapi/cpp/module.h"
  34 #include "ppapi/cpp/point.h"
  35 #include "ppapi/cpp/private/pdf.h"
  36 #include "ppapi/cpp/private/var_private.h"
  37 #include "ppapi/cpp/rect.h"
  38 #include "ppapi/cpp/resource.h"
  39 #include "ppapi/cpp/url_request_info.h"
  40 #include "ppapi/cpp/var_array.h"
  41 #include "ppapi/cpp/var_dictionary.h"
  42 #include "ui/events/keycodes/keyboard_codes.h"
  43
  44 namespace chrome_pdf {
  45
  46 const char kChromePrint[] = "chrome://print/";
  47 const char kChromeExtension[] =
  48     "chrome-extension://mhjfbmdgcfjbbpaeojofohoefgiehjai";
  49
  50 // Dictionary Value key names for the document accessibility info
  51 const char kAccessibleNumberOfPages[] = "numberOfPages";
  52 const char kAccessibleLoaded[] = "loaded";
  53 const char kAccessibleCopyable[] = "copyable";
  54
  55 // PDF background colors.
  56 const uint32 kBackgroundColor = 0xFFCCCCCC;
  57 const uint32 kBackgroundColorMaterial = 0xFF525659;
  58
  59 // Constants used in handling postMessage() messages.
  60 const char kType[] = "type";
  61 // Viewport message arguments. (Page -> Plugin).
  62 const char kJSViewportType[] = "viewport";
  63 const char kJSXOffset[] = "xOffset";
  64 const char kJSYOffset[] = "yOffset";
  65 const char kJSZoom[] = "zoom";
  66 // Stop scrolling message (Page -> Plugin)
  67 const char kJSStopScrollingType[] = "stopScrolling";
  68 // Document dimension arguments (Plugin -> Page).
  69 const char kJSDocumentDimensionsType[] = "documentDimensions";
  70 const char kJSDocumentWidth[] = "width";
  71 const char kJSDocumentHeight[] = "height";
  72 const char kJSPageDimensions[] = "pageDimensions";
  73 const char kJSPageX[] = "x";
  74 const char kJSPageY[] = "y";
  75 const char kJSPageWidth[] = "width";
  76 const char kJSPageHeight[] = "height";
  77 // Document load progress arguments (Plugin -> Page)
  78 const char kJSLoadProgressType[] = "loadProgress";
  79 const char kJSProgressPercentage[] = "progress";
  80 // Bookmarks
  81 const char kJSBookmarksType[] = "bookmarks";
  82 const char kJSBookmarks[] = "bookmarks";
  83 // Get password arguments (Plugin -> Page)
  84 const char kJSGetPasswordType[] = "getPassword";
  85 // Get password complete arguments (Page -> Plugin)
  86 const char kJSGetPasswordCompleteType[] = "getPasswordComplete";
  87 const char kJSPassword[] = "password";
  88 // Print (Page -> Plugin)
  89 const char kJSPrintType[] = "print";
  90 // Save (Page -> Plugin)
  91 const char kJSSaveType[] = "save";
  92 // Go to page (Plugin -> Page)
  93 const char kJSGoToPageType[] = "goToPage";
  94 const char kJSPageNumber[] = "page";
  95 // Reset print preview mode (Page -> Plugin)
  96 const char kJSResetPrintPreviewModeType[] = "resetPrintPreviewMode";
  97 const char kJSPrintPreviewUrl[] = "url";
  98 const char kJSPrintPreviewGrayscale[] = "grayscale";
  99 const char kJSPrintPreviewPageCount[] = "pageCount";
 100 // Load preview page (Page -> Plugin)
 101 const char kJSLoadPreviewPageType[] = "loadPreviewPage";
 102 const char kJSPreviewPageUrl[] = "url";
 103 const char kJSPreviewPageIndex[] = "index";
 104 // Set scroll position (Plugin -> Page)
 105 const char kJSSetScrollPositionType[] = "setScrollPosition";
 106 const char kJSPositionX[] = "x";
 107 const char kJSPositionY[] = "y";
 108 // Set translated strings (Plugin -> Page)
 109 const char kJSSetTranslatedStringsType[] = "setTranslatedStrings";
 110 const char kJSGetPasswordString[] = "getPasswordString";
 111 const char kJSLoadingString[] = "loadingString";
 112 const char kJSLoadFailedString[] = "loadFailedString";
 113 // Request accessibility JSON data (Page -> Plugin)
 114 const char kJSGetAccessibilityJSONType[] = "getAccessibilityJSON";
 115 const char kJSAccessibilityPageNumber[] = "page";
 116 // Reply with accessibility JSON data (Plugin -> Page)
 117 const char kJSGetAccessibilityJSONReplyType[] = "getAccessibilityJSONReply";
 118 const char kJSAccessibilityJSON[] = "json";
 119 // Cancel the stream URL request (Plugin -> Page)
 120 const char kJSCancelStreamUrlType[] = "cancelStreamUrl";
 121 // Navigate to the given URL (Plugin -> Page)
 122 const char kJSNavigateType[] = "navigate";
 123 const char kJSNavigateUrl[] = "url";
 124 const char kJSNavigateNewTab[] = "newTab";
 125 // Open the email editor with the given parameters (Plugin -> Page)
 126 const char kJSEmailType[] = "email";
 127 const char kJSEmailTo[] = "to";
 128 const char kJSEmailCc[] = "cc";
 129 const char kJSEmailBcc[] = "bcc";
 130 const char kJSEmailSubject[] = "subject";
 131 const char kJSEmailBody[] = "body";
 132 // Rotation (Page -> Plugin)
 133 const char kJSRotateClockwiseType[] = "rotateClockwise";
 134 const char kJSRotateCounterclockwiseType[] = "rotateCounterclockwise";
 135 // Select all text in the document (Page -> Plugin)
 136 const char kJSSelectAllType[] = "selectAll";
 137 // Get the selected text in the document (Page -> Plugin)
 138 const char kJSGetSelectedTextType[] = "getSelectedText";
 139 // Reply with selected text (Plugin -> Page)
 140 const char kJSGetSelectedTextReplyType[] = "getSelectedTextReply";
 141 const char kJSSelectedText[] = "selectedText";
 142
 143 // Get the named destination with the given name (Page -> Plugin)
 144 const char KJSGetNamedDestinationType[] = "getNamedDestination";
 145 const char KJSGetNamedDestination[] = "namedDestination";
 146 // Reply with the page number of the named destination (Plugin -> Page)
 147 const char kJSGetNamedDestinationReplyType[] = "getNamedDestinationReply";
 148 const char kJSNamedDestinationPageNumber[] = "pageNumber";
 149
 150 // Selecting text in document (Plugin -> Page)
 151 const char kJSSetIsSelectingType[] = "setIsSelecting";
 152 const char kJSIsSelecting[] = "isSelecting";
 153
 154 const int kFindResultCooldownMs = 100;
 155
 156 const double kMinZoom = 0.01;
 157
 158 namespace {
 159
 160 static const char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1;
 161
 162 PP_Var GetLinkAtPosition(PP_Instance instance, PP_Point point) {
 163   pp::Var var;
 164   void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
 165   if (object) {
 166     var = static_cast<OutOfProcessInstance*>(object)->GetLinkAtPosition(
 167         pp::Point(point));
 168   }
 169   return var.Detach();
 170 }
 171
 172 void Transform(PP_Instance instance, PP_PrivatePageTransformType type) {
 173   void* object =
 174       pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
 175   if (object) {
 176     OutOfProcessInstance* obj_instance =
 177         static_cast<OutOfProcessInstance*>(object);
 178     switch (type) {
 179       case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CW:
 180         obj_instance->RotateClockwise();
 181         break;
 182       case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CCW:
 183         obj_instance->RotateCounterclockwise();
 184         break;
 185     }
 186   }
 187 }
 188
 189 PP_Bool GetPrintPresetOptionsFromDocument(
 190     PP_Instance instance,
 191     PP_PdfPrintPresetOptions_Dev* options) {
 192   void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
 193   if (object) {
 194     OutOfProcessInstance* obj_instance =
 195         static_cast<OutOfProcessInstance*>(object);
 196     obj_instance->GetPrintPresetOptionsFromDocument(options);
 197   }
 198   return PP_TRUE;
 199 }
 200
 201 const PPP_Pdf ppp_private = {
 202   &GetLinkAtPosition,
 203   &Transform,
 204   &GetPrintPresetOptionsFromDocument
 205 };
 206
 207 int ExtractPrintPreviewPageIndex(const std::string& src_url) {
 208   // Sample |src_url| format: chrome://print/id/page_index/print.pdf
 209   std::vector<std::string> url_substr;
 210   base::SplitString(src_url.substr(strlen(kChromePrint)), '/', &url_substr);
 211   if (url_substr.size() != 3)
 212     return -1;
 213
 214   if (url_substr[2] != "print.pdf")
 215     return -1;
 216
 217   int page_index = 0;
 218   if (!base::StringToInt(url_substr[1], &page_index))
 219     return -1;
 220   return page_index;
 221 }
 222
 223 bool IsPrintPreviewUrl(const std::string& url) {
 224   return url.substr(0, strlen(kChromePrint)) == kChromePrint;
 225 }
 226
 227 void ScalePoint(float scale, pp::Point* point) {
 228   point->set_x(static_cast<int>(point->x() * scale));
 229   point->set_y(static_cast<int>(point->y() * scale));
 230 }
 231
 232 void ScaleRect(float scale, pp::Rect* rect) {
 233   int left = static_cast<int>(floorf(rect->x() * scale));
 234   int top = static_cast<int>(floorf(rect->y() * scale));
 235   int right = static_cast<int>(ceilf((rect->x() + rect->width()) * scale));
 236   int bottom = static_cast<int>(ceilf((rect->y() + rect->height()) * scale));
 237   rect->SetRect(left, top, right - left, bottom - top);
 238 }
 239
 240 // TODO(raymes): Remove this dependency on VarPrivate/InstancePrivate. It's
 241 // needed right now to do a synchronous call to JavaScript, but we could easily
 242 // replace this with a custom PPB_PDF function.
 243 pp::Var ModalDialog(const pp::Instance* instance,
 244                     const std::string& type,
 245                     const std::string& message,
 246                     const std::string& default_answer) {
 247   const PPB_Instance_Private* interface =
 248       reinterpret_cast<const PPB_Instance_Private*>(
 249           pp::Module::Get()->GetBrowserInterface(
 250               PPB_INSTANCE_PRIVATE_INTERFACE));
 251   pp::VarPrivate window(pp::PASS_REF,
 252       interface->GetWindowObject(instance->pp_instance()));
 253   if (default_answer.empty())
 254     return window.Call(type, message);
 255   else
 256     return window.Call(type, message, default_answer);
 257 }
 258
 259 }  // namespace
 260
 261 OutOfProcessInstance::OutOfProcessInstance(PP_Instance instance)
 262     : pp::Instance(instance),
 263       pp::Find_Private(this),
 264       pp::Printing_Dev(this),
 265       cursor_(PP_CURSORTYPE_POINTER),
 266       zoom_(1.0),
 267       device_scale_(1.0),
 268       full_(false),
 269       paint_manager_(this, this, true),
 270       first_paint_(true),
 271       document_load_state_(LOAD_STATE_LOADING),
 272       preview_document_load_state_(LOAD_STATE_COMPLETE),
 273       uma_(this),
 274       told_browser_about_unsupported_feature_(false),
 275       print_preview_page_count_(0),
 276       last_progress_sent_(0),
 277       recently_sent_find_update_(false),
 278       received_viewport_message_(false),
 279       did_call_start_loading_(false),
 280       stop_scrolling_(false),
 281       background_color_(kBackgroundColor),
 282       top_toolbar_height_(0) {
 283   loader_factory_.Initialize(this);
 284   timer_factory_.Initialize(this);
 285   form_factory_.Initialize(this);
 286   print_callback_factory_.Initialize(this);
 287   engine_.reset(PDFEngine::Create(this));
 288   pp::Module::Get()->AddPluginInterface(kPPPPdfInterface, &ppp_private);
 289   AddPerInstanceObject(kPPPPdfInterface, this);
 290
 291   RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_MOUSE);
 292   RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_KEYBOARD);
 293   RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_TOUCH);
 294 }
 295
 296 OutOfProcessInstance::~OutOfProcessInstance() {
 297   RemovePerInstanceObject(kPPPPdfInterface, this);
 298   // Explicitly reset the PDFEngine during destruction as it may call back into
 299   // this object.
 300   engine_.reset();
 301 }
 302
 303 bool OutOfProcessInstance::Init(uint32_t argc,
 304                                 const char* argn[],
 305                                 const char* argv[]) {
 306   // Check if the PDF is being loaded in the PDF chrome extension. We only allow
 307   // the plugin to be put into "full frame" mode when it is being loaded in the
 308   // extension because this enables some features that we don't want pages
 309   // abusing outside of the extension.
 310   pp::Var document_url_var = pp::URLUtil_Dev::Get()->GetDocumentURL(this);
 311   std::string document_url = document_url_var.is_string() ?
 312       document_url_var.AsString() : std::string();
 313   std::string extension_url = std::string(kChromeExtension);
 314   bool in_extension =
 315       !document_url.compare(0, extension_url.size(), extension_url);
 316
 317   if (in_extension) {
 318     // Check if the plugin is full frame. This is passed in from JS.
 319     for (uint32_t i = 0; i < argc; ++i) {
 320       if (strcmp(argn[i], "full-frame") == 0) {
 321         full_ = true;
 322         break;
 323       }
 324     }
 325   }
 326
 327   // Only allow the plugin to handle find requests if it is full frame.
 328   if (full_)
 329     SetPluginToHandleFindRequests();
 330
 331   // Send translated strings to the extension where they will be displayed.
 332   // TODO(raymes): It would be better to get these in the extension directly
 333   // through an API but no such API currently exists.
 334   pp::VarDictionary translated_strings;
 335   translated_strings.Set(kType, kJSSetTranslatedStringsType);
 336   translated_strings.Set(kJSGetPasswordString,
 337       GetLocalizedString(PP_RESOURCESTRING_PDFGETPASSWORD));
 338   translated_strings.Set(kJSLoadingString,
 339       GetLocalizedString(PP_RESOURCESTRING_PDFLOADING));
 340   translated_strings.Set(kJSLoadFailedString,
 341       GetLocalizedString(PP_RESOURCESTRING_PDFLOAD_FAILED));
 342   PostMessage(translated_strings);
 343
 344   text_input_.reset(new pp::TextInput_Dev(this));
 345
 346   const char* stream_url = nullptr;
 347   const char* original_url = nullptr;
 348   const char* headers = nullptr;
 349   bool is_material = false;
 350   for (uint32_t i = 0; i < argc; ++i) {
 351     if (strcmp(argn[i], "src") == 0)
 352       original_url = argv[i];
 353     else if (strcmp(argn[i], "stream-url") == 0)
 354       stream_url = argv[i];
 355     else if (strcmp(argn[i], "headers") == 0)
 356       headers = argv[i];
 357     else if (strcmp(argn[i], "is-material") == 0)
 358       is_material = true;
 359     else if (strcmp(argn[i], "top-toolbar-height") == 0)
 360       base::StringToInt(argv[i], &top_toolbar_height_);
 361   }
 362
 363   if (is_material)
 364     background_color_ = kBackgroundColorMaterial;
 365   else
 366     background_color_ = kBackgroundColor;
 367
 368   if (!original_url)
 369     return false;
 370
 371   if (!stream_url)
 372     stream_url = original_url;
 373
 374   // If we're in print preview mode we don't need to load the document yet.
 375   // A |kJSResetPrintPreviewModeType| message will be sent to the plugin letting
 376   // it know the url to load. By not loading here we avoid loading the same
 377   // document twice.
 378   if (IsPrintPreviewUrl(original_url))
 379     return true;
 380
 381   LoadUrl(stream_url);
 382   url_ = original_url;
 383   return engine_->New(original_url, headers);
 384 }
 385
 386 void OutOfProcessInstance::HandleMessage(const pp::Var& message) {
 387   pp::VarDictionary dict(message);
 388   if (!dict.Get(kType).is_string()) {
 389     NOTREACHED();
 390     return;
 391   }
 392
 393   std::string type = dict.Get(kType).AsString();
 394
 395   if (type == kJSViewportType &&
 396       dict.Get(pp::Var(kJSXOffset)).is_number() &&
 397       dict.Get(pp::Var(kJSYOffset)).is_number() &&
 398       dict.Get(pp::Var(kJSZoom)).is_number()) {
 399     received_viewport_message_ = true;
 400     stop_scrolling_ = false;
 401     double zoom = dict.Get(pp::Var(kJSZoom)).AsDouble();
 402     pp::FloatPoint scroll_offset(dict.Get(pp::Var(kJSXOffset)).AsDouble(),
 403                                  dict.Get(pp::Var(kJSYOffset)).AsDouble());
 404
 405     // Bound the input parameters.
 406     zoom = std::max(kMinZoom, zoom);
 407     SetZoom(zoom);
 408     scroll_offset = BoundScrollOffsetToDocument(scroll_offset);
 409     engine_->ScrolledToXPosition(scroll_offset.x() * device_scale_);
 410     engine_->ScrolledToYPosition(scroll_offset.y() * device_scale_);
 411   } else if (type == kJSGetPasswordCompleteType &&
 412              dict.Get(pp::Var(kJSPassword)).is_string()) {
 413     if (password_callback_) {
 414       pp::CompletionCallbackWithOutput<pp::Var> callback = *password_callback_;
 415       password_callback_.reset();
 416       *callback.output() = dict.Get(pp::Var(kJSPassword)).pp_var();
 417       callback.Run(PP_OK);
 418     } else {
 419       NOTREACHED();
 420     }
 421   } else if (type == kJSPrintType) {
 422     Print();
 423   } else if (type == kJSSaveType) {
 424     pp::PDF::SaveAs(this);
 425   } else if (type == kJSRotateClockwiseType) {
 426     RotateClockwise();
 427   } else if (type == kJSRotateCounterclockwiseType) {
 428     RotateCounterclockwise();
 429   } else if (type == kJSSelectAllType) {
 430     engine_->SelectAll();
 431   } else if (type == kJSResetPrintPreviewModeType &&
 432              dict.Get(pp::Var(kJSPrintPreviewUrl)).is_string() &&
 433              dict.Get(pp::Var(kJSPrintPreviewGrayscale)).is_bool() &&
 434              dict.Get(pp::Var(kJSPrintPreviewPageCount)).is_int()) {
 435     url_ = dict.Get(pp::Var(kJSPrintPreviewUrl)).AsString();
 436     preview_pages_info_ = std::queue<PreviewPageInfo>();
 437     preview_document_load_state_ = LOAD_STATE_COMPLETE;
 438     document_load_state_ = LOAD_STATE_LOADING;
 439     LoadUrl(url_);
 440     preview_engine_.reset();
 441     engine_.reset(PDFEngine::Create(this));
 442     engine_->SetGrayscale(dict.Get(pp::Var(kJSPrintPreviewGrayscale)).AsBool());
 443     engine_->New(url_.c_str(), nullptr /* empty header */);
 444
 445     print_preview_page_count_ =
 446         std::max(dict.Get(pp::Var(kJSPrintPreviewPageCount)).AsInt(), 0);
 447
 448     paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
 449   } else if (type == kJSLoadPreviewPageType &&
 450              dict.Get(pp::Var(kJSPreviewPageUrl)).is_string() &&
 451              dict.Get(pp::Var(kJSPreviewPageIndex)).is_int()) {
 452     ProcessPreviewPageInfo(dict.Get(pp::Var(kJSPreviewPageUrl)).AsString(),
 453                            dict.Get(pp::Var(kJSPreviewPageIndex)).AsInt());
 454   } else if (type == kJSGetAccessibilityJSONType) {
 455     pp::VarDictionary reply;
 456     reply.Set(pp::Var(kType), pp::Var(kJSGetAccessibilityJSONReplyType));
 457     if (dict.Get(pp::Var(kJSAccessibilityPageNumber)).is_int()) {
 458       int page = dict.Get(pp::Var(kJSAccessibilityPageNumber)).AsInt();
 459       reply.Set(pp::Var(kJSAccessibilityJSON),
 460                         pp::Var(engine_->GetPageAsJSON(page)));
 461     } else {
 462       base::DictionaryValue node;
 463       node.SetInteger(kAccessibleNumberOfPages, engine_->GetNumberOfPages());
 464       node.SetBoolean(kAccessibleLoaded,
 465                       document_load_state_ != LOAD_STATE_LOADING);
 466       bool has_permissions =
 467           engine_->HasPermission(PDFEngine::PERMISSION_COPY) ||
 468           engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE);
 469       node.SetBoolean(kAccessibleCopyable, has_permissions);
 470       std::string json;
 471       base::JSONWriter::Write(node, &json);
 472       reply.Set(pp::Var(kJSAccessibilityJSON), pp::Var(json));
 473     }
 474     PostMessage(reply);
 475   } else if (type == kJSStopScrollingType) {
 476     stop_scrolling_ = true;
 477   } else if (type == kJSGetSelectedTextType) {
 478     std::string selected_text = engine_->GetSelectedText();
 479     // Always return unix newlines to JS.
 480     base::ReplaceChars(selected_text, "\r", std::string(), &selected_text);
 481     pp::VarDictionary reply;
 482     reply.Set(pp::Var(kType), pp::Var(kJSGetSelectedTextReplyType));
 483     reply.Set(pp::Var(kJSSelectedText), selected_text);
 484     PostMessage(reply);
 485   } else if (type == KJSGetNamedDestinationType &&
 486              dict.Get(pp::Var(KJSGetNamedDestination)).is_string()) {
 487     int page_number = engine_->GetNamedDestinationPage(
 488         dict.Get(pp::Var(KJSGetNamedDestination)).AsString());
 489     pp::VarDictionary reply;
 490     reply.Set(pp::Var(kType), pp::Var(kJSGetNamedDestinationReplyType));
 491     if (page_number >= 0)
 492       reply.Set(pp::Var(kJSNamedDestinationPageNumber), page_number);
 493     PostMessage(reply);
 494   } else {
 495     NOTREACHED();
 496   }
 497 }
 498
 499 bool OutOfProcessInstance::HandleInputEvent(
 500     const pp::InputEvent& event) {
 501   // To simplify things, convert the event into device coordinates if it is
 502   // a mouse event.
 503   pp::InputEvent event_device_res(event);
 504   {
 505     pp::MouseInputEvent mouse_event(event);
 506     if (!mouse_event.is_null()) {
 507       pp::Point point = mouse_event.GetPosition();
 508       pp::Point movement = mouse_event.GetMovement();
 509       ScalePoint(device_scale_, &point);
 510       ScalePoint(device_scale_, &movement);
 511       mouse_event = pp::MouseInputEvent(
 512           this,
 513           event.GetType(),
 514           event.GetTimeStamp(),
 515           event.GetModifiers(),
 516           mouse_event.GetButton(),
 517           point,
 518           mouse_event.GetClickCount(),
 519           movement);
 520       event_device_res = mouse_event;
 521     }
 522   }
 523
 524   pp::InputEvent offset_event(event_device_res);
 525   switch (offset_event.GetType()) {
 526     case PP_INPUTEVENT_TYPE_MOUSEDOWN:
 527     case PP_INPUTEVENT_TYPE_MOUSEUP:
 528     case PP_INPUTEVENT_TYPE_MOUSEMOVE:
 529     case PP_INPUTEVENT_TYPE_MOUSEENTER:
 530     case PP_INPUTEVENT_TYPE_MOUSELEAVE: {
 531       pp::MouseInputEvent mouse_event(event_device_res);
 532       pp::MouseInputEvent mouse_event_dip(event);
 533       pp::Point point = mouse_event.GetPosition();
 534       point.set_x(point.x() - available_area_.x());
 535       offset_event = pp::MouseInputEvent(
 536           this,
 537           event.GetType(),
 538           event.GetTimeStamp(),
 539           event.GetModifiers(),
 540           mouse_event.GetButton(),
 541           point,
 542           mouse_event.GetClickCount(),
 543           mouse_event.GetMovement());
 544       break;
 545     }
 546     default:
 547       break;
 548   }
 549   if (engine_->HandleEvent(offset_event))
 550     return true;
 551
 552   // Middle click is used for scrolling and is handled by the container page.
 553   pp::MouseInputEvent mouse_event(event_device_res);
 554   if (!mouse_event.is_null() &&
 555       mouse_event.GetButton() == PP_INPUTEVENT_MOUSEBUTTON_MIDDLE) {
 556     return false;
 557   }
 558
 559   // Return true for unhandled clicks so the plugin takes focus.
 560   return (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN);
 561 }
 562
 563 void OutOfProcessInstance::DidChangeView(const pp::View& view) {
 564   pp::Rect view_rect(view.GetRect());
 565   float old_device_scale = device_scale_;
 566   float device_scale = view.GetDeviceScale();
 567   pp::Size view_device_size(view_rect.width() * device_scale,
 568                             view_rect.height() * device_scale);
 569
 570   if (view_device_size != plugin_size_ || device_scale != device_scale_) {
 571     device_scale_ = device_scale;
 572     plugin_dip_size_ = view_rect.size();
 573     plugin_size_ = view_device_size;
 574
 575     paint_manager_.SetSize(view_device_size, device_scale_);
 576
 577     pp::Size new_image_data_size = PaintManager::GetNewContextSize(
 578         image_data_.size(),
 579         plugin_size_);
 580     if (new_image_data_size != image_data_.size()) {
 581       image_data_ = pp::ImageData(this,
 582                                   PP_IMAGEDATAFORMAT_BGRA_PREMUL,
 583                                   new_image_data_size,
 584                                   false);
 585       first_paint_ = true;
 586     }
 587
 588     if (image_data_.is_null()) {
 589       DCHECK(plugin_size_.IsEmpty());
 590       return;
 591     }
 592
 593     OnGeometryChanged(zoom_, old_device_scale);
 594   }
 595
 596   if (!stop_scrolling_) {
 597     pp::Point scroll_offset(view.GetScrollOffset());
 598     // Because view messages come from the DOM, the coordinates of the viewport
 599     // are 0-based (i.e. they do not correspond to the viewport's coordinates in
 600     // JS), so we need to subtract the toolbar height to convert them into
 601     // viewport coordinates.
 602     pp::FloatPoint scroll_offset_float(scroll_offset.x(),
 603                                        scroll_offset.y() - top_toolbar_height_);
 604     scroll_offset_float = BoundScrollOffsetToDocument(scroll_offset_float);
 605     engine_->ScrolledToXPosition(scroll_offset_float.x() * device_scale_);
 606     engine_->ScrolledToYPosition(scroll_offset_float.y() * device_scale_);
 607   }
 608 }
 609
 610 void OutOfProcessInstance::GetPrintPresetOptionsFromDocument(
 611     PP_PdfPrintPresetOptions_Dev* options) {
 612   options->is_scaling_disabled = PP_FromBool(IsPrintScalingDisabled());
 613   options->duplex =
 614       static_cast<PP_PrivateDuplexMode_Dev>(engine_->GetDuplexType());
 615   options->copies = engine_->GetCopiesToPrint();
 616   pp::Size uniform_page_size;
 617   options->is_page_size_uniform =
 618       PP_FromBool(engine_->GetPageSizeAndUniformity(&uniform_page_size));
 619   options->uniform_page_size = uniform_page_size;
 620 }
 621
 622 pp::Var OutOfProcessInstance::GetLinkAtPosition(
 623     const pp::Point& point) {
 624   pp::Point offset_point(point);
 625   ScalePoint(device_scale_, &offset_point);
 626   offset_point.set_x(offset_point.x() - available_area_.x());
 627   return engine_->GetLinkAtPosition(offset_point);
 628 }
 629
 630 uint32_t OutOfProcessInstance::QuerySupportedPrintOutputFormats() {
 631   return engine_->QuerySupportedPrintOutputFormats();
 632 }
 633
 634 int32_t OutOfProcessInstance::PrintBegin(
 635     const PP_PrintSettings_Dev& print_settings) {
 636   // For us num_pages is always equal to the number of pages in the PDF
 637   // document irrespective of the printable area.
 638   int32_t ret = engine_->GetNumberOfPages();
 639   if (!ret)
 640     return 0;
 641
 642   uint32_t supported_formats = engine_->QuerySupportedPrintOutputFormats();
 643   if ((print_settings.format & supported_formats) == 0)
 644     return 0;
 645
 646   print_settings_.is_printing = true;
 647   print_settings_.pepper_print_settings = print_settings;
 648   engine_->PrintBegin();
 649   return ret;
 650 }
 651
 652 pp::Resource OutOfProcessInstance::PrintPages(
 653     const PP_PrintPageNumberRange_Dev* page_ranges,
 654     uint32_t page_range_count) {
 655   if (!print_settings_.is_printing)
 656     return pp::Resource();
 657
 658   print_settings_.print_pages_called_ = true;
 659   return engine_->PrintPages(page_ranges, page_range_count,
 660                              print_settings_.pepper_print_settings);
 661 }
 662
 663 void OutOfProcessInstance::PrintEnd() {
 664   if (print_settings_.print_pages_called_)
 665     UserMetricsRecordAction("PDF.PrintPage");
 666   print_settings_.Clear();
 667   engine_->PrintEnd();
 668 }
 669
 670 bool OutOfProcessInstance::IsPrintScalingDisabled() {
 671   return !engine_->GetPrintScaling();
 672 }
 673
 674 bool OutOfProcessInstance::StartFind(const std::string& text,
 675                                                  bool case_sensitive) {
 676   engine_->StartFind(text.c_str(), case_sensitive);
 677   return true;
 678 }
 679
 680 void OutOfProcessInstance::SelectFindResult(bool forward) {
 681   engine_->SelectFindResult(forward);
 682 }
 683
 684 void OutOfProcessInstance::StopFind() {
 685   engine_->StopFind();
 686   tickmarks_.clear();
 687   SetTickmarks(tickmarks_);
 688 }
 689
 690 void OutOfProcessInstance::OnPaint(
 691     const std::vector<pp::Rect>& paint_rects,
 692     std::vector<PaintManager::ReadyRect>* ready,
 693     std::vector<pp::Rect>* pending) {
 694   if (image_data_.is_null()) {
 695     DCHECK(plugin_size_.IsEmpty());
 696     return;
 697   }
 698   if (first_paint_) {
 699     first_paint_ = false;
 700     pp::Rect rect = pp::Rect(pp::Point(), image_data_.size());
 701     FillRect(rect, background_color_);
 702     ready->push_back(PaintManager::ReadyRect(rect, image_data_, true));
 703   }
 704
 705   if (!received_viewport_message_)
 706     return;
 707
 708   engine_->PrePaint();
 709
 710   for (size_t i = 0; i < paint_rects.size(); i++) {
 711     // Intersect with plugin area since there could be pending invalidates from
 712     // when the plugin area was larger.
 713     pp::Rect rect =
 714         paint_rects[i].Intersect(pp::Rect(pp::Point(), plugin_size_));
 715     if (rect.IsEmpty())
 716       continue;
 717
 718     pp::Rect pdf_rect = available_area_.Intersect(rect);
 719     if (!pdf_rect.IsEmpty()) {
 720       pdf_rect.Offset(available_area_.x() * -1, 0);
 721
 722       std::vector<pp::Rect> pdf_ready;
 723       std::vector<pp::Rect> pdf_pending;
 724       engine_->Paint(pdf_rect, &image_data_, &pdf_ready, &pdf_pending);
 725       for (size_t j = 0; j < pdf_ready.size(); ++j) {
 726         pdf_ready[j].Offset(available_area_.point());
 727         ready->push_back(
 728             PaintManager::ReadyRect(pdf_ready[j], image_data_, false));
 729       }
 730       for (size_t j = 0; j < pdf_pending.size(); ++j) {
 731         pdf_pending[j].Offset(available_area_.point());
 732         pending->push_back(pdf_pending[j]);
 733       }
 734     }
 735
 736     // Ensure the region above the first page (if any) is filled;
 737     int32_t first_page_ypos = engine_->GetNumberOfPages() == 0 ?
 738         0 : engine_->GetPageScreenRect(0).y();
 739     if (rect.y() < first_page_ypos) {
 740       pp::Rect region = rect.Intersect(pp::Rect(
 741           pp::Point(), pp::Size(plugin_size_.width(), first_page_ypos)));
 742       ready->push_back(PaintManager::ReadyRect(region, image_data_, false));
 743       FillRect(region, background_color_);
 744     }
 745
 746     for (size_t j = 0; j < background_parts_.size(); ++j) {
 747       pp::Rect intersection = background_parts_[j].location.Intersect(rect);
 748       if (!intersection.IsEmpty()) {
 749         FillRect(intersection, background_parts_[j].color);
 750         ready->push_back(
 751             PaintManager::ReadyRect(intersection, image_data_, false));
 752       }
 753     }
 754   }
 755
 756   engine_->PostPaint();
 757 }
 758
 759 void OutOfProcessInstance::DidOpen(int32_t result) {
 760   if (result == PP_OK) {
 761     if (!engine_->HandleDocumentLoad(embed_loader_)) {
 762       document_load_state_ = LOAD_STATE_LOADING;
 763       DocumentLoadFailed();
 764     }
 765   } else if (result != PP_ERROR_ABORTED) {  // Can happen in tests.
 766     NOTREACHED();
 767     DocumentLoadFailed();
 768   }
 769
 770   // If it's a progressive load, cancel the stream URL request so that requests
 771   // can be made on the original URL.
 772   // TODO(raymes): Make this clearer once the in-process plugin is deleted.
 773   if (engine_->IsProgressiveLoad()) {
 774     pp::VarDictionary message;
 775     message.Set(kType, kJSCancelStreamUrlType);
 776     PostMessage(message);
 777   }
 778 }
 779
 780 void OutOfProcessInstance::DidOpenPreview(int32_t result) {
 781   if (result == PP_OK) {
 782     preview_engine_.reset(PDFEngine::Create(new PreviewModeClient(this)));
 783     preview_engine_->HandleDocumentLoad(embed_preview_loader_);
 784   } else {
 785     NOTREACHED();
 786   }
 787 }
 788
 789 void OutOfProcessInstance::OnClientTimerFired(int32_t id) {
 790   engine_->OnCallback(id);
 791 }
 792
 793 void OutOfProcessInstance::CalculateBackgroundParts() {
 794   background_parts_.clear();
 795   int left_width = available_area_.x();
 796   int right_start = available_area_.right();
 797   int right_width = abs(plugin_size_.width() - available_area_.right());
 798   int bottom = std::min(available_area_.bottom(), plugin_size_.height());
 799
 800   // Add the left, right, and bottom rectangles.  Note: we assume only
 801   // horizontal centering.
 802   BackgroundPart part = {
 803     pp::Rect(0, 0, left_width, bottom),
 804     background_color_
 805   };
 806   if (!part.location.IsEmpty())
 807     background_parts_.push_back(part);
 808   part.location = pp::Rect(right_start, 0, right_width, bottom);
 809   if (!part.location.IsEmpty())
 810     background_parts_.push_back(part);
 811   part.location = pp::Rect(
 812       0, bottom, plugin_size_.width(), plugin_size_.height() - bottom);
 813   if (!part.location.IsEmpty())
 814     background_parts_.push_back(part);
 815 }
 816
 817 int OutOfProcessInstance::GetDocumentPixelWidth() const {
 818   return static_cast<int>(ceil(document_size_.width() * zoom_ * device_scale_));
 819 }
 820
 821 int OutOfProcessInstance::GetDocumentPixelHeight() const {
 822   return static_cast<int>(
 823       ceil(document_size_.height() * zoom_ * device_scale_));
 824 }
 825
 826 void OutOfProcessInstance::FillRect(const pp::Rect& rect, uint32 color) {
 827   DCHECK(!image_data_.is_null() || rect.IsEmpty());
 828   uint32* buffer_start = static_cast<uint32*>(image_data_.data());
 829   int stride = image_data_.stride();
 830   uint32* ptr = buffer_start + rect.y() * stride / 4 + rect.x();
 831   int height = rect.height();
 832   int width = rect.width();
 833   for (int y = 0; y < height; ++y) {
 834     for (int x = 0; x < width; ++x)
 835       *(ptr + x) = color;
 836     ptr += stride /4;
 837   }
 838 }
 839
 840 void OutOfProcessInstance::DocumentSizeUpdated(const pp::Size& size) {
 841   document_size_ = size;
 842
 843   pp::VarDictionary dimensions;
 844   dimensions.Set(kType, kJSDocumentDimensionsType);
 845   dimensions.Set(kJSDocumentWidth, pp::Var(document_size_.width()));
 846   dimensions.Set(kJSDocumentHeight, pp::Var(document_size_.height()));
 847   pp::VarArray page_dimensions_array;
 848   int num_pages = engine_->GetNumberOfPages();
 849   for (int i = 0; i < num_pages; ++i) {
 850     pp::Rect page_rect = engine_->GetPageRect(i);
 851     pp::VarDictionary page_dimensions;
 852     page_dimensions.Set(kJSPageX, pp::Var(page_rect.x()));
 853     page_dimensions.Set(kJSPageY, pp::Var(page_rect.y()));
 854     page_dimensions.Set(kJSPageWidth, pp::Var(page_rect.width()));
 855     page_dimensions.Set(kJSPageHeight, pp::Var(page_rect.height()));
 856     page_dimensions_array.Set(i, page_dimensions);
 857   }
 858   dimensions.Set(kJSPageDimensions, page_dimensions_array);
 859   PostMessage(dimensions);
 860
 861   OnGeometryChanged(zoom_, device_scale_);
 862 }
 863
 864 void OutOfProcessInstance::Invalidate(const pp::Rect& rect) {
 865   pp::Rect offset_rect(rect);
 866   offset_rect.Offset(available_area_.point());
 867   paint_manager_.InvalidateRect(offset_rect);
 868 }
 869
 870 void OutOfProcessInstance::Scroll(const pp::Point& point) {
 871   if (!image_data_.is_null())
 872     paint_manager_.ScrollRect(available_area_, point);
 873 }
 874
 875 void OutOfProcessInstance::ScrollToX(int x) {
 876   pp::VarDictionary position;
 877   position.Set(kType, kJSSetScrollPositionType);
 878   position.Set(kJSPositionX, pp::Var(x / device_scale_));
 879   PostMessage(position);
 880 }
 881
 882 void OutOfProcessInstance::ScrollToY(int y) {
 883   pp::VarDictionary position;
 884   position.Set(kType, kJSSetScrollPositionType);
 885   position.Set(kJSPositionY, pp::Var(y / device_scale_));
 886   PostMessage(position);
 887 }
 888
 889 void OutOfProcessInstance::ScrollToPage(int page) {
 890   if (engine_->GetNumberOfPages() == 0)
 891     return;
 892
 893   pp::VarDictionary message;
 894   message.Set(kType, kJSGoToPageType);
 895   message.Set(kJSPageNumber, pp::Var(page));
 896   PostMessage(message);
 897 }
 898
 899 void OutOfProcessInstance::NavigateTo(const std::string& url,
 900                                       bool open_in_new_tab) {
 901   pp::VarDictionary message;
 902   message.Set(kType, kJSNavigateType);
 903   message.Set(kJSNavigateUrl, url);
 904   message.Set(kJSNavigateNewTab, open_in_new_tab);
 905   PostMessage(message);
 906 }
 907
 908 void OutOfProcessInstance::UpdateCursor(PP_CursorType_Dev cursor) {
 909   if (cursor == cursor_)
 910     return;
 911   cursor_ = cursor;
 912
 913   const PPB_CursorControl_Dev* cursor_interface =
 914       reinterpret_cast<const PPB_CursorControl_Dev*>(
 915       pp::Module::Get()->GetBrowserInterface(PPB_CURSOR_CONTROL_DEV_INTERFACE));
 916   if (!cursor_interface) {
 917     NOTREACHED();
 918     return;
 919   }
 920
 921   cursor_interface->SetCursor(
 922       pp_instance(), cursor_, pp::ImageData().pp_resource(), nullptr);
 923 }
 924
 925 void OutOfProcessInstance::UpdateTickMarks(
 926     const std::vector<pp::Rect>& tickmarks) {
 927   float inverse_scale = 1.0f / device_scale_;
 928   std::vector<pp::Rect> scaled_tickmarks = tickmarks;
 929   for (size_t i = 0; i < scaled_tickmarks.size(); i++)
 930     ScaleRect(inverse_scale, &scaled_tickmarks[i]);
 931   tickmarks_ = scaled_tickmarks;
 932 }
 933
 934 void OutOfProcessInstance::NotifyNumberOfFindResultsChanged(int total,
 935                                                             bool final_result) {
 936   // We don't want to spam the renderer with too many updates to the number of
 937   // find results. Don't send an update if we sent one too recently. If it's the
 938   // final update, we always send it though.
 939   if (final_result) {
 940     NumberOfFindResultsChanged(total, final_result);
 941     SetTickmarks(tickmarks_);
 942     return;
 943   }
 944
 945   if (recently_sent_find_update_)
 946     return;
 947
 948   NumberOfFindResultsChanged(total, final_result);
 949   SetTickmarks(tickmarks_);
 950   recently_sent_find_update_ = true;
 951   pp::CompletionCallback callback =
 952       timer_factory_.NewCallback(
 953           &OutOfProcessInstance::ResetRecentlySentFindUpdate);
 954   pp::Module::Get()->core()->CallOnMainThread(kFindResultCooldownMs,
 955                                               callback, 0);
 956 }
 957
 958 void OutOfProcessInstance::NotifySelectedFindResultChanged(
 959     int current_find_index) {
 960   DCHECK_GE(current_find_index, 0);
 961   SelectedFindResultChanged(current_find_index);
 962 }
 963
 964 void OutOfProcessInstance::GetDocumentPassword(
 965     pp::CompletionCallbackWithOutput<pp::Var> callback) {
 966   if (password_callback_) {
 967     NOTREACHED();
 968     return;
 969   }
 970
 971   password_callback_.reset(
 972       new pp::CompletionCallbackWithOutput<pp::Var>(callback));
 973   pp::VarDictionary message;
 974   message.Set(pp::Var(kType), pp::Var(kJSGetPasswordType));
 975   PostMessage(message);
 976 }
 977
 978 void OutOfProcessInstance::Alert(const std::string& message) {
 979   ModalDialog(this, "alert", message, std::string());
 980 }
 981
 982 bool OutOfProcessInstance::Confirm(const std::string& message) {
 983   pp::Var result = ModalDialog(this, "confirm", message, std::string());
 984   return result.is_bool() ? result.AsBool() : false;
 985 }
 986
 987 std::string OutOfProcessInstance::Prompt(const std::string& question,
 988                                          const std::string& default_answer) {
 989   pp::Var result = ModalDialog(this, "prompt", question, default_answer);
 990   return result.is_string() ? result.AsString() : std::string();
 991 }
 992
 993 std::string OutOfProcessInstance::GetURL() {
 994   return url_;
 995 }
 996
 997 void OutOfProcessInstance::Email(const std::string& to,
 998                                  const std::string& cc,
 999                                  const std::string& bcc,
1000                                  const std::string& subject,
1001                                  const std::string& body) {
1002   pp::VarDictionary message;
1003   message.Set(pp::Var(kType), pp::Var(kJSEmailType));
1004   message.Set(pp::Var(kJSEmailTo),
1005               pp::Var(net::EscapeUrlEncodedData(to, false)));
1006   message.Set(pp::Var(kJSEmailCc),
1007               pp::Var(net::EscapeUrlEncodedData(cc, false)));
1008   message.Set(pp::Var(kJSEmailBcc),
1009               pp::Var(net::EscapeUrlEncodedData(bcc, false)));
1010   message.Set(pp::Var(kJSEmailSubject),
1011               pp::Var(net::EscapeUrlEncodedData(subject, false)));
1012   message.Set(pp::Var(kJSEmailBody),
1013               pp::Var(net::EscapeUrlEncodedData(body, false)));
1014   PostMessage(message);
1015 }
1016
1017 void OutOfProcessInstance::Print() {
1018   if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1019       !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) {
1020     return;
1021   }
1022
1023   pp::CompletionCallback callback =
1024       print_callback_factory_.NewCallback(&OutOfProcessInstance::OnPrint);
1025   pp::Module::Get()->core()->CallOnMainThread(0, callback);
1026 }
1027
1028 void OutOfProcessInstance::OnPrint(int32_t) {
1029   pp::PDF::Print(this);
1030 }
1031
1032 void OutOfProcessInstance::SubmitForm(const std::string& url,
1033                                       const void* data,
1034                                       int length) {
1035   pp::URLRequestInfo request(this);
1036   request.SetURL(url);
1037   request.SetMethod("POST");
1038   request.AppendDataToBody(reinterpret_cast<const char*>(data), length);
1039
1040   pp::CompletionCallback callback =
1041       form_factory_.NewCallback(&OutOfProcessInstance::FormDidOpen);
1042   form_loader_ = CreateURLLoaderInternal();
1043   int rv = form_loader_.Open(request, callback);
1044   if (rv != PP_OK_COMPLETIONPENDING)
1045     callback.Run(rv);
1046 }
1047
1048 void OutOfProcessInstance::FormDidOpen(int32_t result) {
1049   // TODO: inform the user of success/failure.
1050   if (result != PP_OK) {
1051     NOTREACHED();
1052   }
1053 }
1054
1055 std::string OutOfProcessInstance::ShowFileSelectionDialog() {
1056   // Seems like very low priority to implement, since the pdf has no way to get
1057   // the file data anyways.  Javascript doesn't let you do this synchronously.
1058   NOTREACHED();
1059   return std::string();
1060 }
1061
1062 pp::URLLoader OutOfProcessInstance::CreateURLLoader() {
1063   if (full_) {
1064     if (!did_call_start_loading_) {
1065       did_call_start_loading_ = true;
1066       pp::PDF::DidStartLoading(this);
1067     }
1068
1069     // Disable save and print until the document is fully loaded, since they
1070     // would generate an incomplete document.  Need to do this each time we
1071     // call DidStartLoading since that resets the content restrictions.
1072     pp::PDF::SetContentRestriction(this, CONTENT_RESTRICTION_SAVE |
1073                                    CONTENT_RESTRICTION_PRINT);
1074   }
1075
1076   return CreateURLLoaderInternal();
1077 }
1078
1079 void OutOfProcessInstance::ScheduleCallback(int id, int delay_in_ms) {
1080   pp::CompletionCallback callback =
1081       timer_factory_.NewCallback(&OutOfProcessInstance::OnClientTimerFired);
1082   pp::Module::Get()->core()->CallOnMainThread(delay_in_ms, callback, id);
1083 }
1084
1085 void OutOfProcessInstance::SearchString(const base::char16* string,
1086                             const base::char16* term,
1087                             bool case_sensitive,
1088                             std::vector<SearchStringResult>* results) {
1089   PP_PrivateFindResult* pp_results;
1090   int count = 0;
1091   pp::PDF::SearchString(
1092       this,
1093       reinterpret_cast<const unsigned short*>(string),
1094       reinterpret_cast<const unsigned short*>(term),
1095       case_sensitive,
1096       &pp_results,
1097       &count);
1098
1099   results->resize(count);
1100   for (int i = 0; i < count; ++i) {
1101     (*results)[i].start_index = pp_results[i].start_index;
1102     (*results)[i].length = pp_results[i].length;
1103   }
1104
1105   pp::Memory_Dev memory;
1106   memory.MemFree(pp_results);
1107 }
1108
1109 void OutOfProcessInstance::DocumentPaintOccurred() {
1110 }
1111
1112 void OutOfProcessInstance::DocumentLoadComplete(int page_count) {
1113   // Clear focus state for OSK.
1114   FormTextFieldFocusChange(false);
1115
1116   DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1117   document_load_state_ = LOAD_STATE_COMPLETE;
1118   UserMetricsRecordAction("PDF.LoadSuccess");
1119
1120   // Note: If we are in print preview mode the scroll location is retained
1121   // across document loads so we don't want to scroll again and override it.
1122   if (IsPrintPreview()) {
1123     AppendBlankPrintPreviewPages();
1124     OnGeometryChanged(0, 0);
1125   }
1126
1127   pp::VarDictionary bookmarks_message;
1128   bookmarks_message.Set(pp::Var(kType), pp::Var(kJSBookmarksType));
1129   bookmarks_message.Set(pp::Var(kJSBookmarks), engine_->GetBookmarks());
1130   PostMessage(bookmarks_message);
1131
1132   pp::VarDictionary progress_message;
1133   progress_message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
1134   progress_message.Set(pp::Var(kJSProgressPercentage), pp::Var(100));
1135   PostMessage(progress_message);
1136
1137   if (!full_)
1138     return;
1139
1140   if (did_call_start_loading_) {
1141     pp::PDF::DidStopLoading(this);
1142     did_call_start_loading_ = false;
1143   }
1144
1145   int content_restrictions =
1146       CONTENT_RESTRICTION_CUT | CONTENT_RESTRICTION_PASTE;
1147   if (!engine_->HasPermission(PDFEngine::PERMISSION_COPY))
1148     content_restrictions |= CONTENT_RESTRICTION_COPY;
1149
1150   if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1151       !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) {
1152     content_restrictions |= CONTENT_RESTRICTION_PRINT;
1153   }
1154
1155   pp::PDF::SetContentRestriction(this, content_restrictions);
1156
1157   uma_.HistogramCustomCounts("PDF.PageCount", page_count, 1, 1000000, 50);
1158 }
1159
1160 void OutOfProcessInstance::RotateClockwise() {
1161   engine_->RotateClockwise();
1162 }
1163
1164 void OutOfProcessInstance::RotateCounterclockwise() {
1165   engine_->RotateCounterclockwise();
1166 }
1167
1168 void OutOfProcessInstance::PreviewDocumentLoadComplete() {
1169   if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1170       preview_pages_info_.empty()) {
1171     return;
1172   }
1173
1174   preview_document_load_state_ = LOAD_STATE_COMPLETE;
1175
1176   int dest_page_index = preview_pages_info_.front().second;
1177   int src_page_index =
1178       ExtractPrintPreviewPageIndex(preview_pages_info_.front().first);
1179   if (src_page_index > 0 &&  dest_page_index > -1 && preview_engine_.get())
1180     engine_->AppendPage(preview_engine_.get(), dest_page_index);
1181
1182   preview_pages_info_.pop();
1183   // |print_preview_page_count_| is not updated yet. Do not load any
1184   // other preview pages till we get this information.
1185   if (print_preview_page_count_ == 0)
1186     return;
1187
1188   if (!preview_pages_info_.empty())
1189     LoadAvailablePreviewPage();
1190 }
1191
1192 void OutOfProcessInstance::DocumentLoadFailed() {
1193   DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1194   UserMetricsRecordAction("PDF.LoadFailure");
1195
1196   if (did_call_start_loading_) {
1197     pp::PDF::DidStopLoading(this);
1198     did_call_start_loading_ = false;
1199   }
1200
1201   document_load_state_ = LOAD_STATE_FAILED;
1202   paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1203
1204   // Send a progress value of -1 to indicate a failure.
1205   pp::VarDictionary message;
1206   message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
1207   message.Set(pp::Var(kJSProgressPercentage), pp::Var(-1));
1208   PostMessage(message);
1209 }
1210
1211 void OutOfProcessInstance::PreviewDocumentLoadFailed() {
1212   UserMetricsRecordAction("PDF.PreviewDocumentLoadFailure");
1213   if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1214       preview_pages_info_.empty()) {
1215     return;
1216   }
1217
1218   preview_document_load_state_ = LOAD_STATE_FAILED;
1219   preview_pages_info_.pop();
1220
1221   if (!preview_pages_info_.empty())
1222     LoadAvailablePreviewPage();
1223 }
1224
1225 pp::Instance* OutOfProcessInstance::GetPluginInstance() {
1226   return this;
1227 }
1228
1229 void OutOfProcessInstance::DocumentHasUnsupportedFeature(
1230     const std::string& feature) {
1231   std::string metric("PDF_Unsupported_");
1232   metric += feature;
1233   if (!unsupported_features_reported_.count(metric)) {
1234     unsupported_features_reported_.insert(metric);
1235     UserMetricsRecordAction(metric);
1236   }
1237
1238   // Since we use an info bar, only do this for full frame plugins..
1239   if (!full_)
1240     return;
1241
1242   if (told_browser_about_unsupported_feature_)
1243     return;
1244   told_browser_about_unsupported_feature_ = true;
1245
1246   pp::PDF::HasUnsupportedFeature(this);
1247 }
1248
1249 void OutOfProcessInstance::DocumentLoadProgress(uint32 available,
1250                                                 uint32 doc_size) {
1251   double progress = 0.0;
1252   if (doc_size == 0) {
1253     // Document size is unknown. Use heuristics.
1254     // We'll make progress logarithmic from 0 to 100M.
1255     static const double kFactor = log(100000000.0) / 100.0;
1256     if (available > 0) {
1257       progress = log(static_cast<double>(available)) / kFactor;
1258       if (progress > 100.0)
1259         progress = 100.0;
1260     }
1261   } else {
1262     progress = 100.0 * static_cast<double>(available) / doc_size;
1263   }
1264
1265   // We send 100% load progress in DocumentLoadComplete.
1266   if (progress >= 100)
1267     return;
1268
1269   // Avoid sending too many progress messages over PostMessage.
1270   if (progress > last_progress_sent_ + 1) {
1271     last_progress_sent_ = progress;
1272     pp::VarDictionary message;
1273     message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
1274     message.Set(pp::Var(kJSProgressPercentage), pp::Var(progress));
1275     PostMessage(message);
1276   }
1277 }
1278
1279 void OutOfProcessInstance::FormTextFieldFocusChange(bool in_focus) {
1280   if (!text_input_.get())
1281     return;
1282   if (in_focus)
1283     text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_TEXT);
1284   else
1285     text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_NONE);
1286 }
1287
1288 void OutOfProcessInstance::ResetRecentlySentFindUpdate(int32_t /* unused */) {
1289   recently_sent_find_update_ = false;
1290 }
1291
1292 void OutOfProcessInstance::OnGeometryChanged(double old_zoom,
1293                                              float old_device_scale) {
1294   if (zoom_ != old_zoom || device_scale_ != old_device_scale)
1295     engine_->ZoomUpdated(zoom_ * device_scale_);
1296
1297   available_area_ = pp::Rect(plugin_size_);
1298   int doc_width = GetDocumentPixelWidth();
1299   if (doc_width < available_area_.width()) {
1300     available_area_.Offset((available_area_.width() - doc_width) / 2, 0);
1301     available_area_.set_width(doc_width);
1302   }
1303   int bottom_of_document =
1304       GetDocumentPixelHeight() + (top_toolbar_height_ * device_scale_);
1305   if (bottom_of_document < available_area_.height())
1306     available_area_.set_height(bottom_of_document);
1307
1308   CalculateBackgroundParts();
1309   engine_->PageOffsetUpdated(available_area_.point());
1310   engine_->PluginSizeUpdated(available_area_.size());
1311
1312   if (!document_size_.GetArea())
1313     return;
1314   paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1315 }
1316
1317 void OutOfProcessInstance::LoadUrl(const std::string& url) {
1318   LoadUrlInternal(url, &embed_loader_, &OutOfProcessInstance::DidOpen);
1319 }
1320
1321 void OutOfProcessInstance::LoadPreviewUrl(const std::string& url) {
1322   LoadUrlInternal(url, &embed_preview_loader_,
1323                   &OutOfProcessInstance::DidOpenPreview);
1324 }
1325
1326 void OutOfProcessInstance::LoadUrlInternal(
1327     const std::string& url,
1328     pp::URLLoader* loader,
1329     void (OutOfProcessInstance::* method)(int32_t)) {
1330   pp::URLRequestInfo request(this);
1331   request.SetURL(url);
1332   request.SetMethod("GET");
1333
1334   *loader = CreateURLLoaderInternal();
1335   pp::CompletionCallback callback = loader_factory_.NewCallback(method);
1336   int rv = loader->Open(request, callback);
1337   if (rv != PP_OK_COMPLETIONPENDING)
1338     callback.Run(rv);
1339 }
1340
1341 pp::URLLoader OutOfProcessInstance::CreateURLLoaderInternal() {
1342   pp::URLLoader loader(this);
1343
1344   const PPB_URLLoaderTrusted* trusted_interface =
1345       reinterpret_cast<const PPB_URLLoaderTrusted*>(
1346           pp::Module::Get()->GetBrowserInterface(
1347               PPB_URLLOADERTRUSTED_INTERFACE));
1348   if (trusted_interface)
1349     trusted_interface->GrantUniversalAccess(loader.pp_resource());
1350   return loader;
1351 }
1352
1353 void OutOfProcessInstance::SetZoom(double scale) {
1354   double old_zoom = zoom_;
1355   zoom_ = scale;
1356   OnGeometryChanged(old_zoom, device_scale_);
1357 }
1358
1359 std::string OutOfProcessInstance::GetLocalizedString(PP_ResourceString id) {
1360   pp::Var rv(pp::PDF::GetLocalizedString(this, id));
1361   if (!rv.is_string())
1362     return std::string();
1363
1364   return rv.AsString();
1365 }
1366
1367 void OutOfProcessInstance::AppendBlankPrintPreviewPages() {
1368   if (print_preview_page_count_ == 0)
1369     return;
1370   engine_->AppendBlankPages(print_preview_page_count_);
1371   if (!preview_pages_info_.empty())
1372     LoadAvailablePreviewPage();
1373 }
1374
1375 bool OutOfProcessInstance::IsPrintPreview() {
1376   return IsPrintPreviewUrl(url_);
1377 }
1378
1379 uint32 OutOfProcessInstance::GetBackgroundColor() {
1380   return background_color_;
1381 }
1382
1383 void OutOfProcessInstance::IsSelectingChanged(bool is_selecting) {
1384   pp::VarDictionary message;
1385   message.Set(kType, kJSSetIsSelectingType);
1386   message.Set(kJSIsSelecting, pp::Var(is_selecting));
1387   PostMessage(message);
1388 }
1389
1390 void OutOfProcessInstance::ProcessPreviewPageInfo(const std::string& url,
1391                                                   int dst_page_index) {
1392   if (!IsPrintPreview())
1393     return;
1394
1395   int src_page_index = ExtractPrintPreviewPageIndex(url);
1396   if (src_page_index < 1)
1397     return;
1398
1399   preview_pages_info_.push(std::make_pair(url, dst_page_index));
1400   LoadAvailablePreviewPage();
1401 }
1402
1403 void OutOfProcessInstance::LoadAvailablePreviewPage() {
1404   if (preview_pages_info_.empty() ||
1405       document_load_state_ != LOAD_STATE_COMPLETE) {
1406     return;
1407   }
1408
1409   std::string url = preview_pages_info_.front().first;
1410   int dst_page_index = preview_pages_info_.front().second;
1411   int src_page_index = ExtractPrintPreviewPageIndex(url);
1412   if (src_page_index < 1 ||
1413       dst_page_index >= print_preview_page_count_ ||
1414       preview_document_load_state_ == LOAD_STATE_LOADING) {
1415     return;
1416   }
1417
1418   preview_document_load_state_ = LOAD_STATE_LOADING;
1419   LoadPreviewUrl(url);
1420 }
1421
1422 void OutOfProcessInstance::UserMetricsRecordAction(
1423     const std::string& action) {
1424   // TODO(raymes): Move this function to PPB_UMA_Private.
1425   pp::PDF::UserMetricsRecordAction(this, pp::Var(action));
1426 }
1427
1428 pp::FloatPoint OutOfProcessInstance::BoundScrollOffsetToDocument(
1429     const pp::FloatPoint& scroll_offset) {
1430   float max_x = document_size_.width() * zoom_ - plugin_dip_size_.width();
1431   float x = std::max(std::min(scroll_offset.x(), max_x), 0.0f);
1432   float min_y = -top_toolbar_height_;
1433   float max_y = document_size_.height() * zoom_ - plugin_dip_size_.height();
1434   float y = std::max(std::min(scroll_offset.y(), max_y), min_y);
1435   return pp::FloatPoint(x, y);
1436 }
1437
1438 }  // namespace chrome_pdf