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