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 = 0xFFEEEEEE;
  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       pp::Selection_Dev(this),
 266       cursor_(PP_CURSORTYPE_POINTER),
 267       zoom_(1.0),
 268       device_scale_(1.0),
 269       full_(false),
 270       paint_manager_(this, this, true),
 271       first_paint_(true),
 272       document_load_state_(LOAD_STATE_LOADING),
 273       preview_document_load_state_(LOAD_STATE_COMPLETE),
 274       uma_(this),
 275       told_browser_about_unsupported_feature_(false),
 276       print_preview_page_count_(0),
 277       last_progress_sent_(0),
 278       recently_sent_find_update_(false),
 279       received_viewport_message_(false),
 280       did_call_start_loading_(false),
 281       stop_scrolling_(false),
 282       background_color_(kBackgroundColor) {
 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 }
 299
 300 bool OutOfProcessInstance::Init(uint32_t argc,
 301                                 const char* argn[],
 302                                 const char* argv[]) {
 303   // Check if the PDF is being loaded in the PDF chrome extension. We only allow
 304   // the plugin to be put into "full frame" mode when it is being loaded in the
 305   // extension because this enables some features that we don't want pages
 306   // abusing outside of the extension.
 307   pp::Var document_url_var = pp::URLUtil_Dev::Get()->GetDocumentURL(this);
 308   std::string document_url = document_url_var.is_string() ?
 309       document_url_var.AsString() : std::string();
 310   std::string extension_url = std::string(kChromeExtension);
 311   bool in_extension =
 312       !document_url.compare(0, extension_url.size(), extension_url);
 313
 314   if (in_extension) {
 315     // Check if the plugin is full frame. This is passed in from JS.
 316     for (uint32_t i = 0; i < argc; ++i) {
 317       if (strcmp(argn[i], "full-frame") == 0) {
 318         full_ = true;
 319         break;
 320       }
 321     }
 322   }
 323
 324   // Only allow the plugin to handle find requests if it is full frame.
 325   if (full_)
 326     SetPluginToHandleFindRequests();
 327
 328   // Send translated strings to the extension where they will be displayed.
 329   // TODO(raymes): It would be better to get these in the extension directly
 330   // through an API but no such API currently exists.
 331   pp::VarDictionary translated_strings;
 332   translated_strings.Set(kType, kJSSetTranslatedStringsType);
 333   translated_strings.Set(kJSGetPasswordString,
 334       GetLocalizedString(PP_RESOURCESTRING_PDFGETPASSWORD));
 335   translated_strings.Set(kJSLoadingString,
 336       GetLocalizedString(PP_RESOURCESTRING_PDFLOADING));
 337   translated_strings.Set(kJSLoadFailedString,
 338       GetLocalizedString(PP_RESOURCESTRING_PDFLOAD_FAILED));
 339   PostMessage(translated_strings);
 340
 341   text_input_.reset(new pp::TextInput_Dev(this));
 342
 343   const char* stream_url = NULL;
 344   const char* original_url = NULL;
 345   const char* headers = NULL;
 346   bool is_material = false;
 347   for (uint32_t i = 0; i < argc; ++i) {
 348     if (strcmp(argn[i], "src") == 0)
 349       original_url = argv[i];
 350     else if (strcmp(argn[i], "stream-url") == 0)
 351       stream_url = argv[i];
 352     else if (strcmp(argn[i], "headers") == 0)
 353       headers = argv[i];
 354     else if (strcmp(argn[i], "is-material") == 0)
 355       is_material = true;
 356   }
 357
 358   if (is_material)
 359     background_color_ = kBackgroundColorMaterial;
 360   else
 361     background_color_ = kBackgroundColor;
 362
 363   // TODO(raymes): This is a hack to ensure that if no headers are passed in
 364   // then we get the right MIME type. When the in process plugin is removed we
 365   // can fix the document loader properly and remove this hack.
 366   if (!headers || strcmp(headers, "") == 0)
 367     headers = "content-type: application/pdf";
 368
 369   if (!original_url)
 370     return false;
 371
 372   if (!stream_url)
 373     stream_url = original_url;
 374
 375   // If we're in print preview mode we don't need to load the document yet.
 376   // A |kJSResetPrintPreviewModeType| message will be sent to the plugin letting
 377   // it know the url to load. By not loading here we avoid loading the same
 378   // document twice.
 379   if (IsPrintPreviewUrl(original_url))
 380     return true;
 381
 382   LoadUrl(stream_url);
 383   url_ = original_url;
 384   return engine_->New(original_url, headers);
 385 }
 386
 387 void OutOfProcessInstance::HandleMessage(const pp::Var& message) {
 388   pp::VarDictionary dict(message);
 389   if (!dict.Get(kType).is_string()) {
 390     NOTREACHED();
 391     return;
 392   }
 393
 394   std::string type = dict.Get(kType).AsString();
 395
 396   if (type == kJSViewportType &&
 397       dict.Get(pp::Var(kJSXOffset)).is_number() &&
 398       dict.Get(pp::Var(kJSYOffset)).is_number() &&
 399       dict.Get(pp::Var(kJSZoom)).is_number()) {
 400     received_viewport_message_ = true;
 401     stop_scrolling_ = false;
 402     double zoom = dict.Get(pp::Var(kJSZoom)).AsDouble();
 403     pp::FloatPoint scroll_offset(dict.Get(pp::Var(kJSXOffset)).AsDouble(),
 404                                  dict.Get(pp::Var(kJSYOffset)).AsDouble());
 405
 406     // Bound the input parameters.
 407     zoom = std::max(kMinZoom, zoom);
 408     SetZoom(zoom);
 409     scroll_offset = BoundScrollOffsetToDocument(scroll_offset);
 410     engine_->ScrolledToXPosition(scroll_offset.x() * device_scale_);
 411     engine_->ScrolledToYPosition(scroll_offset.y() * device_scale_);
 412   } else if (type == kJSGetPasswordCompleteType &&
 413              dict.Get(pp::Var(kJSPassword)).is_string()) {
 414     if (password_callback_) {
 415       pp::CompletionCallbackWithOutput<pp::Var> callback = *password_callback_;
 416       password_callback_.reset();
 417       *callback.output() = dict.Get(pp::Var(kJSPassword)).pp_var();
 418       callback.Run(PP_OK);
 419     } else {
 420       NOTREACHED();
 421     }
 422   } else if (type == kJSPrintType) {
 423     Print();
 424   } else if (type == kJSSaveType) {
 425     pp::PDF::SaveAs(this);
 426   } else if (type == kJSRotateClockwiseType) {
 427     RotateClockwise();
 428   } else if (type == kJSRotateCounterclockwiseType) {
 429     RotateCounterclockwise();
 430   } else if (type == kJSSelectAllType) {
 431     engine_->SelectAll();
 432   } else if (type == kJSResetPrintPreviewModeType &&
 433              dict.Get(pp::Var(kJSPrintPreviewUrl)).is_string() &&
 434              dict.Get(pp::Var(kJSPrintPreviewGrayscale)).is_bool() &&
 435              dict.Get(pp::Var(kJSPrintPreviewPageCount)).is_int()) {
 436     url_ = dict.Get(pp::Var(kJSPrintPreviewUrl)).AsString();
 437     preview_pages_info_ = std::queue<PreviewPageInfo>();
 438     preview_document_load_state_ = LOAD_STATE_COMPLETE;
 439     document_load_state_ = LOAD_STATE_LOADING;
 440     LoadUrl(url_);
 441     preview_engine_.reset();
 442     engine_.reset(PDFEngine::Create(this));
 443     engine_->SetGrayscale(dict.Get(pp::Var(kJSPrintPreviewGrayscale)).AsBool());
 444     engine_->New(url_.c_str());
 445
 446     print_preview_page_count_ =
 447         std::max(dict.Get(pp::Var(kJSPrintPreviewPageCount)).AsInt(), 0);
 448
 449     paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
 450   } else if (type == kJSLoadPreviewPageType &&
 451              dict.Get(pp::Var(kJSPreviewPageUrl)).is_string() &&
 452              dict.Get(pp::Var(kJSPreviewPageIndex)).is_int()) {
 453     ProcessPreviewPageInfo(dict.Get(pp::Var(kJSPreviewPageUrl)).AsString(),
 454                            dict.Get(pp::Var(kJSPreviewPageIndex)).AsInt());
 455   } else if (type == kJSGetAccessibilityJSONType) {
 456     pp::VarDictionary reply;
 457     reply.Set(pp::Var(kType), pp::Var(kJSGetAccessibilityJSONReplyType));
 458     if (dict.Get(pp::Var(kJSAccessibilityPageNumber)).is_int()) {
 459       int page = dict.Get(pp::Var(kJSAccessibilityPageNumber)).AsInt();
 460       reply.Set(pp::Var(kJSAccessibilityJSON),
 461                         pp::Var(engine_->GetPageAsJSON(page)));
 462     } else {
 463       base::DictionaryValue node;
 464       node.SetInteger(kAccessibleNumberOfPages, engine_->GetNumberOfPages());
 465       node.SetBoolean(kAccessibleLoaded,
 466                       document_load_state_ != LOAD_STATE_LOADING);
 467       bool has_permissions =
 468           engine_->HasPermission(PDFEngine::PERMISSION_COPY) ||
 469           engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE);
 470       node.SetBoolean(kAccessibleCopyable, has_permissions);
 471       std::string json;
 472       base::JSONWriter::Write(&node, &json);
 473       reply.Set(pp::Var(kJSAccessibilityJSON), pp::Var(json));
 474     }
 475     PostMessage(reply);
 476   } else if (type == kJSStopScrollingType) {
 477     stop_scrolling_ = true;
 478   } else if (type == kJSGetSelectedTextType) {
 479     std::string selected_text = engine_->GetSelectedText();
 480     // Always return unix newlines to JS.
 481     base::ReplaceChars(selected_text, "\r", std::string(), &selected_text);
 482     pp::VarDictionary reply;
 483     reply.Set(pp::Var(kType), pp::Var(kJSGetSelectedTextReplyType));
 484     reply.Set(pp::Var(kJSSelectedText), selected_text);
 485     PostMessage(reply);
 486   } else if (type == KJSGetNamedDestinationType &&
 487              dict.Get(pp::Var(KJSGetNamedDestination)).is_string()) {
 488     int page_number = engine_->GetNamedDestinationPage(
 489         dict.Get(pp::Var(KJSGetNamedDestination)).AsString());
 490     pp::VarDictionary reply;
 491     reply.Set(pp::Var(kType), pp::Var(kJSGetNamedDestinationReplyType));
 492     if (page_number >= 0)
 493       reply.Set(pp::Var(kJSNamedDestinationPageNumber), page_number);
 494     PostMessage(reply);
 495   } else {
 496     NOTREACHED();
 497   }
 498 }
 499
 500 bool OutOfProcessInstance::HandleInputEvent(
 501     const pp::InputEvent& event) {
 502   // To simplify things, convert the event into device coordinates if it is
 503   // a mouse event.
 504   pp::InputEvent event_device_res(event);
 505   {
 506     pp::MouseInputEvent mouse_event(event);
 507     if (!mouse_event.is_null()) {
 508       pp::Point point = mouse_event.GetPosition();
 509       pp::Point movement = mouse_event.GetMovement();
 510       ScalePoint(device_scale_, &point);
 511       ScalePoint(device_scale_, &movement);
 512       mouse_event = pp::MouseInputEvent(
 513           this,
 514           event.GetType(),
 515           event.GetTimeStamp(),
 516           event.GetModifiers(),
 517           mouse_event.GetButton(),
 518           point,
 519           mouse_event.GetClickCount(),
 520           movement);
 521       event_device_res = mouse_event;
 522     }
 523   }
 524
 525   pp::InputEvent offset_event(event_device_res);
 526   switch (offset_event.GetType()) {
 527     case PP_INPUTEVENT_TYPE_MOUSEDOWN:
 528     case PP_INPUTEVENT_TYPE_MOUSEUP:
 529     case PP_INPUTEVENT_TYPE_MOUSEMOVE:
 530     case PP_INPUTEVENT_TYPE_MOUSEENTER:
 531     case PP_INPUTEVENT_TYPE_MOUSELEAVE: {
 532       pp::MouseInputEvent mouse_event(event_device_res);
 533       pp::MouseInputEvent mouse_event_dip(event);
 534       pp::Point point = mouse_event.GetPosition();
 535       point.set_x(point.x() - available_area_.x());
 536       offset_event = pp::MouseInputEvent(
 537           this,
 538           event.GetType(),
 539           event.GetTimeStamp(),
 540           event.GetModifiers(),
 541           mouse_event.GetButton(),
 542           point,
 543           mouse_event.GetClickCount(),
 544           mouse_event.GetMovement());
 545       break;
 546     }
 547     default:
 548       break;
 549   }
 550   if (engine_->HandleEvent(offset_event))
 551     return true;
 552
 553   // Middle click is used for scrolling and is handled by the container page.
 554   pp::MouseInputEvent mouse_event(event_device_res);
 555   if (!mouse_event.is_null() &&
 556       mouse_event.GetButton() == PP_INPUTEVENT_MOUSEBUTTON_MIDDLE) {
 557     return false;
 558   }
 559
 560   // Return true for unhandled clicks so the plugin takes focus.
 561   return (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN);
 562 }
 563
 564 void OutOfProcessInstance::DidChangeView(const pp::View& view) {
 565   pp::Rect view_rect(view.GetRect());
 566   float old_device_scale = device_scale_;
 567   float device_scale = view.GetDeviceScale();
 568   pp::Size view_device_size(view_rect.width() * device_scale,
 569                             view_rect.height() * device_scale);
 570
 571   if (view_device_size != plugin_size_ || device_scale != device_scale_) {
 572     device_scale_ = device_scale;
 573     plugin_dip_size_ = view_rect.size();
 574     plugin_size_ = view_device_size;
 575
 576     paint_manager_.SetSize(view_device_size, device_scale_);
 577
 578     pp::Size new_image_data_size = PaintManager::GetNewContextSize(
 579         image_data_.size(),
 580         plugin_size_);
 581     if (new_image_data_size != image_data_.size()) {
 582       image_data_ = pp::ImageData(this,
 583                                   PP_IMAGEDATAFORMAT_BGRA_PREMUL,
 584                                   new_image_data_size,
 585                                   false);
 586       first_paint_ = true;
 587     }
 588
 589     if (image_data_.is_null()) {
 590       DCHECK(plugin_size_.IsEmpty());
 591       return;
 592     }
 593
 594     OnGeometryChanged(zoom_, old_device_scale);
 595   }
 596
 597   if (!stop_scrolling_) {
 598     pp::Point scroll_offset(view.GetScrollOffset());
 599     pp::FloatPoint scroll_offset_float(scroll_offset.x(),
 600                                        scroll_offset.y());
 601     scroll_offset_float = BoundScrollOffsetToDocument(scroll_offset_float);
 602     engine_->ScrolledToXPosition(scroll_offset_float.x() * device_scale_);
 603     engine_->ScrolledToYPosition(scroll_offset_float.y() * device_scale_);
 604   }
 605 }
 606
 607 void OutOfProcessInstance::GetPrintPresetOptionsFromDocument(
 608     PP_PdfPrintPresetOptions_Dev* options) {
 609   options->is_scaling_disabled = PP_FromBool(IsPrintScalingDisabled());
 610   options->duplex =
 611       static_cast<PP_PrivateDuplexMode_Dev>(engine_->GetDuplexType());
 612   options->copies = engine_->GetCopiesToPrint();
 613 }
 614
 615 pp::Var OutOfProcessInstance::GetLinkAtPosition(
 616     const pp::Point& point) {
 617   pp::Point offset_point(point);
 618   ScalePoint(device_scale_, &offset_point);
 619   offset_point.set_x(offset_point.x() - available_area_.x());
 620   return engine_->GetLinkAtPosition(offset_point);
 621 }
 622
 623 pp::Var OutOfProcessInstance::GetSelectedText(bool html) {
 624   if (html)
 625     return pp::Var();
 626   return engine_->GetSelectedText();
 627 }
 628
 629 uint32_t OutOfProcessInstance::QuerySupportedPrintOutputFormats() {
 630   return engine_->QuerySupportedPrintOutputFormats();
 631 }
 632
 633 int32_t OutOfProcessInstance::PrintBegin(
 634     const PP_PrintSettings_Dev& print_settings) {
 635   // For us num_pages is always equal to the number of pages in the PDF
 636   // document irrespective of the printable area.
 637   int32_t ret = engine_->GetNumberOfPages();
 638   if (!ret)
 639     return 0;
 640
 641   uint32_t supported_formats = engine_->QuerySupportedPrintOutputFormats();
 642   if ((print_settings.format & supported_formats) == 0)
 643     return 0;
 644
 645   print_settings_.is_printing = true;
 646   print_settings_.pepper_print_settings = print_settings;
 647   engine_->PrintBegin();
 648   return ret;
 649 }
 650
 651 pp::Resource OutOfProcessInstance::PrintPages(
 652     const PP_PrintPageNumberRange_Dev* page_ranges,
 653     uint32_t page_range_count) {
 654   if (!print_settings_.is_printing)
 655     return pp::Resource();
 656
 657   print_settings_.print_pages_called_ = true;
 658   return engine_->PrintPages(page_ranges, page_range_count,
 659                              print_settings_.pepper_print_settings);
 660 }
 661
 662 void OutOfProcessInstance::PrintEnd() {
 663   if (print_settings_.print_pages_called_)
 664     UserMetricsRecordAction("PDF.PrintPage");
 665   print_settings_.Clear();
 666   engine_->PrintEnd();
 667 }
 668
 669 bool OutOfProcessInstance::IsPrintScalingDisabled() {
 670   return !engine_->GetPrintScaling();
 671 }
 672
 673 bool OutOfProcessInstance::StartFind(const std::string& text,
 674                                                  bool case_sensitive) {
 675   engine_->StartFind(text.c_str(), case_sensitive);
 676   return true;
 677 }
 678
 679 void OutOfProcessInstance::SelectFindResult(bool forward) {
 680   engine_->SelectFindResult(forward);
 681 }
 682
 683 void OutOfProcessInstance::StopFind() {
 684   engine_->StopFind();
 685   tickmarks_.clear();
 686   SetTickmarks(tickmarks_);
 687 }
 688
 689 void OutOfProcessInstance::OnPaint(
 690     const std::vector<pp::Rect>& paint_rects,
 691     std::vector<PaintManager::ReadyRect>* ready,
 692     std::vector<pp::Rect>* pending) {
 693   if (image_data_.is_null()) {
 694     DCHECK(plugin_size_.IsEmpty());
 695     return;
 696   }
 697   if (first_paint_) {
 698     first_paint_ = false;
 699     pp::Rect rect = pp::Rect(pp::Point(), image_data_.size());
 700     FillRect(rect, background_color_);
 701     ready->push_back(PaintManager::ReadyRect(rect, image_data_, true));
 702   }
 703
 704   if (!received_viewport_message_)
 705     return;
 706
 707   engine_->PrePaint();
 708
 709   for (size_t i = 0; i < paint_rects.size(); i++) {
 710     // Intersect with plugin area since there could be pending invalidates from
 711     // when the plugin area was larger.
 712     pp::Rect rect =
 713         paint_rects[i].Intersect(pp::Rect(pp::Point(), plugin_size_));
 714     if (rect.IsEmpty())
 715       continue;
 716
 717     pp::Rect pdf_rect = available_area_.Intersect(rect);
 718     if (!pdf_rect.IsEmpty()) {
 719       pdf_rect.Offset(available_area_.x() * -1, 0);
 720
 721       std::vector<pp::Rect> pdf_ready;
 722       std::vector<pp::Rect> pdf_pending;
 723       engine_->Paint(pdf_rect, &image_data_, &pdf_ready, &pdf_pending);
 724       for (size_t j = 0; j < pdf_ready.size(); ++j) {
 725         pdf_ready[j].Offset(available_area_.point());
 726         ready->push_back(
 727             PaintManager::ReadyRect(pdf_ready[j], image_data_, false));
 728       }
 729       for (size_t j = 0; j < pdf_pending.size(); ++j) {
 730         pdf_pending[j].Offset(available_area_.point());
 731         pending->push_back(pdf_pending[j]);
 732       }
 733     }
 734
 735     for (size_t j = 0; j < background_parts_.size(); ++j) {
 736       pp::Rect intersection = background_parts_[j].location.Intersect(rect);
 737       if (!intersection.IsEmpty()) {
 738         FillRect(intersection, background_parts_[j].color);
 739         ready->push_back(
 740             PaintManager::ReadyRect(intersection, image_data_, false));
 741       }
 742     }
 743   }
 744
 745   engine_->PostPaint();
 746 }
 747
 748 void OutOfProcessInstance::DidOpen(int32_t result) {
 749   if (result == PP_OK) {
 750     if (!engine_->HandleDocumentLoad(embed_loader_)) {
 751       document_load_state_ = LOAD_STATE_LOADING;
 752       DocumentLoadFailed();
 753     }
 754   } else if (result != PP_ERROR_ABORTED) {  // Can happen in tests.
 755     NOTREACHED();
 756     DocumentLoadFailed();
 757   }
 758
 759   // If it's a progressive load, cancel the stream URL request so that requests
 760   // can be made on the original URL.
 761   // TODO(raymes): Make this clearer once the in-process plugin is deleted.
 762   if (engine_->IsProgressiveLoad()) {
 763     pp::VarDictionary message;
 764     message.Set(kType, kJSCancelStreamUrlType);
 765     PostMessage(message);
 766   }
 767 }
 768
 769 void OutOfProcessInstance::DidOpenPreview(int32_t result) {
 770   if (result == PP_OK) {
 771     preview_engine_.reset(PDFEngine::Create(new PreviewModeClient(this)));
 772     preview_engine_->HandleDocumentLoad(embed_preview_loader_);
 773   } else {
 774     NOTREACHED();
 775   }
 776 }
 777
 778 void OutOfProcessInstance::OnClientTimerFired(int32_t id) {
 779   engine_->OnCallback(id);
 780 }
 781
 782 void OutOfProcessInstance::CalculateBackgroundParts() {
 783   background_parts_.clear();
 784   int left_width = available_area_.x();
 785   int right_start = available_area_.right();
 786   int right_width = abs(plugin_size_.width() - available_area_.right());
 787   int bottom = std::min(available_area_.bottom(), plugin_size_.height());
 788
 789   // Add the left, right, and bottom rectangles.  Note: we assume only
 790   // horizontal centering.
 791   BackgroundPart part = {
 792     pp::Rect(0, 0, left_width, bottom),
 793     background_color_
 794   };
 795   if (!part.location.IsEmpty())
 796     background_parts_.push_back(part);
 797   part.location = pp::Rect(right_start, 0, right_width, bottom);
 798   if (!part.location.IsEmpty())
 799     background_parts_.push_back(part);
 800   part.location = pp::Rect(
 801       0, bottom, plugin_size_.width(), plugin_size_.height() - bottom);
 802   if (!part.location.IsEmpty())
 803     background_parts_.push_back(part);
 804 }
 805
 806 int OutOfProcessInstance::GetDocumentPixelWidth() const {
 807   return static_cast<int>(ceil(document_size_.width() * zoom_ * device_scale_));
 808 }
 809
 810 int OutOfProcessInstance::GetDocumentPixelHeight() const {
 811   return static_cast<int>(
 812       ceil(document_size_.height() * zoom_ * device_scale_));
 813 }
 814
 815 void OutOfProcessInstance::FillRect(const pp::Rect& rect, uint32 color) {
 816   DCHECK(!image_data_.is_null() || rect.IsEmpty());
 817   uint32* buffer_start = static_cast<uint32*>(image_data_.data());
 818   int stride = image_data_.stride();
 819   uint32* ptr = buffer_start + rect.y() * stride / 4 + rect.x();
 820   int height = rect.height();
 821   int width = rect.width();
 822   for (int y = 0; y < height; ++y) {
 823     for (int x = 0; x < width; ++x)
 824       *(ptr + x) = color;
 825     ptr += stride /4;
 826   }
 827 }
 828
 829 void OutOfProcessInstance::DocumentSizeUpdated(const pp::Size& size) {
 830   document_size_ = size;
 831
 832   pp::VarDictionary dimensions;
 833   dimensions.Set(kType, kJSDocumentDimensionsType);
 834   dimensions.Set(kJSDocumentWidth, pp::Var(document_size_.width()));
 835   dimensions.Set(kJSDocumentHeight, pp::Var(document_size_.height()));
 836   pp::VarArray page_dimensions_array;
 837   int num_pages = engine_->GetNumberOfPages();
 838   for (int i = 0; i < num_pages; ++i) {
 839     pp::Rect page_rect = engine_->GetPageRect(i);
 840     pp::VarDictionary page_dimensions;
 841     page_dimensions.Set(kJSPageX, pp::Var(page_rect.x()));
 842     page_dimensions.Set(kJSPageY, pp::Var(page_rect.y()));
 843     page_dimensions.Set(kJSPageWidth, pp::Var(page_rect.width()));
 844     page_dimensions.Set(kJSPageHeight, pp::Var(page_rect.height()));
 845     page_dimensions_array.Set(i, page_dimensions);
 846   }
 847   dimensions.Set(kJSPageDimensions, page_dimensions_array);
 848   PostMessage(dimensions);
 849
 850   OnGeometryChanged(zoom_, device_scale_);
 851 }
 852
 853 void OutOfProcessInstance::Invalidate(const pp::Rect& rect) {
 854   pp::Rect offset_rect(rect);
 855   offset_rect.Offset(available_area_.point());
 856   paint_manager_.InvalidateRect(offset_rect);
 857 }
 858
 859 void OutOfProcessInstance::Scroll(const pp::Point& point) {
 860   if (!image_data_.is_null())
 861     paint_manager_.ScrollRect(available_area_, point);
 862 }
 863
 864 void OutOfProcessInstance::ScrollToX(int x) {
 865   pp::VarDictionary position;
 866   position.Set(kType, kJSSetScrollPositionType);
 867   position.Set(kJSPositionX, pp::Var(x / device_scale_));
 868   PostMessage(position);
 869 }
 870
 871 void OutOfProcessInstance::ScrollToY(int y) {
 872   pp::VarDictionary position;
 873   position.Set(kType, kJSSetScrollPositionType);
 874   position.Set(kJSPositionY, pp::Var(y / device_scale_));
 875   PostMessage(position);
 876 }
 877
 878 void OutOfProcessInstance::ScrollToPage(int page) {
 879   if (engine_->GetNumberOfPages() == 0)
 880     return;
 881
 882   pp::VarDictionary message;
 883   message.Set(kType, kJSGoToPageType);
 884   message.Set(kJSPageNumber, pp::Var(page));
 885   PostMessage(message);
 886 }
 887
 888 void OutOfProcessInstance::NavigateTo(const std::string& url,
 889                                       bool open_in_new_tab) {
 890   pp::VarDictionary message;
 891   message.Set(kType, kJSNavigateType);
 892   message.Set(kJSNavigateUrl, url);
 893   message.Set(kJSNavigateNewTab, open_in_new_tab);
 894   PostMessage(message);
 895 }
 896
 897 void OutOfProcessInstance::UpdateCursor(PP_CursorType_Dev cursor) {
 898   if (cursor == cursor_)
 899     return;
 900   cursor_ = cursor;
 901
 902   const PPB_CursorControl_Dev* cursor_interface =
 903       reinterpret_cast<const PPB_CursorControl_Dev*>(
 904       pp::Module::Get()->GetBrowserInterface(PPB_CURSOR_CONTROL_DEV_INTERFACE));
 905   if (!cursor_interface) {
 906     NOTREACHED();
 907     return;
 908   }
 909
 910   cursor_interface->SetCursor(
 911       pp_instance(), cursor_, pp::ImageData().pp_resource(), NULL);
 912 }
 913
 914 void OutOfProcessInstance::UpdateTickMarks(
 915     const std::vector<pp::Rect>& tickmarks) {
 916   float inverse_scale = 1.0f / device_scale_;
 917   std::vector<pp::Rect> scaled_tickmarks = tickmarks;
 918   for (size_t i = 0; i < scaled_tickmarks.size(); i++)
 919     ScaleRect(inverse_scale, &scaled_tickmarks[i]);
 920   tickmarks_ = scaled_tickmarks;
 921 }
 922
 923 void OutOfProcessInstance::NotifyNumberOfFindResultsChanged(int total,
 924                                                             bool final_result) {
 925   // We don't want to spam the renderer with too many updates to the number of
 926   // find results. Don't send an update if we sent one too recently. If it's the
 927   // final update, we always send it though.
 928   if (final_result) {
 929     NumberOfFindResultsChanged(total, final_result);
 930     SetTickmarks(tickmarks_);
 931     return;
 932   }
 933
 934   if (recently_sent_find_update_)
 935     return;
 936
 937   NumberOfFindResultsChanged(total, final_result);
 938   SetTickmarks(tickmarks_);
 939   recently_sent_find_update_ = true;
 940   pp::CompletionCallback callback =
 941       timer_factory_.NewCallback(
 942           &OutOfProcessInstance::ResetRecentlySentFindUpdate);
 943   pp::Module::Get()->core()->CallOnMainThread(kFindResultCooldownMs,
 944                                               callback, 0);
 945 }
 946
 947 void OutOfProcessInstance::NotifySelectedFindResultChanged(
 948     int current_find_index) {
 949   DCHECK_GE(current_find_index, 0);
 950   SelectedFindResultChanged(current_find_index);
 951 }
 952
 953 void OutOfProcessInstance::GetDocumentPassword(
 954     pp::CompletionCallbackWithOutput<pp::Var> callback) {
 955   if (password_callback_) {
 956     NOTREACHED();
 957     return;
 958   }
 959
 960   password_callback_.reset(
 961       new pp::CompletionCallbackWithOutput<pp::Var>(callback));
 962   pp::VarDictionary message;
 963   message.Set(pp::Var(kType), pp::Var(kJSGetPasswordType));
 964   PostMessage(message);
 965 }
 966
 967 void OutOfProcessInstance::Alert(const std::string& message) {
 968   ModalDialog(this, "alert", message, std::string());
 969 }
 970
 971 bool OutOfProcessInstance::Confirm(const std::string& message) {
 972   pp::Var result = ModalDialog(this, "confirm", message, std::string());
 973   return result.is_bool() ? result.AsBool() : false;
 974 }
 975
 976 std::string OutOfProcessInstance::Prompt(const std::string& question,
 977                                          const std::string& default_answer) {
 978   pp::Var result = ModalDialog(this, "prompt", question, default_answer);
 979   return result.is_string() ? result.AsString() : std::string();
 980 }
 981
 982 std::string OutOfProcessInstance::GetURL() {
 983   return url_;
 984 }
 985
 986 void OutOfProcessInstance::Email(const std::string& to,
 987                                  const std::string& cc,
 988                                  const std::string& bcc,
 989                                  const std::string& subject,
 990                                  const std::string& body) {
 991   pp::VarDictionary message;
 992   message.Set(pp::Var(kType), pp::Var(kJSEmailType));
 993   message.Set(pp::Var(kJSEmailTo),
 994               pp::Var(net::EscapeUrlEncodedData(to, false)));
 995   message.Set(pp::Var(kJSEmailCc),
 996               pp::Var(net::EscapeUrlEncodedData(cc, false)));
 997   message.Set(pp::Var(kJSEmailBcc),
 998               pp::Var(net::EscapeUrlEncodedData(bcc, false)));
 999   message.Set(pp::Var(kJSEmailSubject),
1000               pp::Var(net::EscapeUrlEncodedData(subject, false)));
1001   message.Set(pp::Var(kJSEmailBody),
1002               pp::Var(net::EscapeUrlEncodedData(body, false)));
1003   PostMessage(message);
1004 }
1005
1006 void OutOfProcessInstance::Print() {
1007   if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1008       !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) {
1009     return;
1010   }
1011
1012   pp::CompletionCallback callback =
1013       print_callback_factory_.NewCallback(&OutOfProcessInstance::OnPrint);
1014   pp::Module::Get()->core()->CallOnMainThread(0, callback);
1015 }
1016
1017 void OutOfProcessInstance::OnPrint(int32_t) {
1018   pp::PDF::Print(this);
1019 }
1020
1021 void OutOfProcessInstance::SubmitForm(const std::string& url,
1022                                       const void* data,
1023                                       int length) {
1024   pp::URLRequestInfo request(this);
1025   request.SetURL(url);
1026   request.SetMethod("POST");
1027   request.AppendDataToBody(reinterpret_cast<const char*>(data), length);
1028
1029   pp::CompletionCallback callback =
1030       form_factory_.NewCallback(&OutOfProcessInstance::FormDidOpen);
1031   form_loader_ = CreateURLLoaderInternal();
1032   int rv = form_loader_.Open(request, callback);
1033   if (rv != PP_OK_COMPLETIONPENDING)
1034     callback.Run(rv);
1035 }
1036
1037 void OutOfProcessInstance::FormDidOpen(int32_t result) {
1038   // TODO: inform the user of success/failure.
1039   if (result != PP_OK) {
1040     NOTREACHED();
1041   }
1042 }
1043
1044 std::string OutOfProcessInstance::ShowFileSelectionDialog() {
1045   // Seems like very low priority to implement, since the pdf has no way to get
1046   // the file data anyways.  Javascript doesn't let you do this synchronously.
1047   NOTREACHED();
1048   return std::string();
1049 }
1050
1051 pp::URLLoader OutOfProcessInstance::CreateURLLoader() {
1052   if (full_) {
1053     if (!did_call_start_loading_) {
1054       did_call_start_loading_ = true;
1055       pp::PDF::DidStartLoading(this);
1056     }
1057
1058     // Disable save and print until the document is fully loaded, since they
1059     // would generate an incomplete document.  Need to do this each time we
1060     // call DidStartLoading since that resets the content restrictions.
1061     pp::PDF::SetContentRestriction(this, CONTENT_RESTRICTION_SAVE |
1062                                    CONTENT_RESTRICTION_PRINT);
1063   }
1064
1065   return CreateURLLoaderInternal();
1066 }
1067
1068 void OutOfProcessInstance::ScheduleCallback(int id, int delay_in_ms) {
1069   pp::CompletionCallback callback =
1070       timer_factory_.NewCallback(&OutOfProcessInstance::OnClientTimerFired);
1071   pp::Module::Get()->core()->CallOnMainThread(delay_in_ms, callback, id);
1072 }
1073
1074 void OutOfProcessInstance::SearchString(const base::char16* string,
1075                             const base::char16* term,
1076                             bool case_sensitive,
1077                             std::vector<SearchStringResult>* results) {
1078   PP_PrivateFindResult* pp_results;
1079   int count = 0;
1080   pp::PDF::SearchString(
1081       this,
1082       reinterpret_cast<const unsigned short*>(string),
1083       reinterpret_cast<const unsigned short*>(term),
1084       case_sensitive,
1085       &pp_results,
1086       &count);
1087
1088   results->resize(count);
1089   for (int i = 0; i < count; ++i) {
1090     (*results)[i].start_index = pp_results[i].start_index;
1091     (*results)[i].length = pp_results[i].length;
1092   }
1093
1094   pp::Memory_Dev memory;
1095   memory.MemFree(pp_results);
1096 }
1097
1098 void OutOfProcessInstance::DocumentPaintOccurred() {
1099 }
1100
1101 void OutOfProcessInstance::DocumentLoadComplete(int page_count) {
1102   // Clear focus state for OSK.
1103   FormTextFieldFocusChange(false);
1104
1105   DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1106   document_load_state_ = LOAD_STATE_COMPLETE;
1107   UserMetricsRecordAction("PDF.LoadSuccess");
1108
1109   // Note: If we are in print preview mode the scroll location is retained
1110   // across document loads so we don't want to scroll again and override it.
1111   if (IsPrintPreview()) {
1112     AppendBlankPrintPreviewPages();
1113     OnGeometryChanged(0, 0);
1114   }
1115
1116   pp::VarDictionary bookmarks_message;
1117   bookmarks_message.Set(pp::Var(kType), pp::Var(kJSBookmarksType));
1118   bookmarks_message.Set(pp::Var(kJSBookmarks), engine_->GetBookmarks());
1119   PostMessage(bookmarks_message);
1120
1121   pp::VarDictionary progress_message;
1122   progress_message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
1123   progress_message.Set(pp::Var(kJSProgressPercentage), pp::Var(100));
1124   PostMessage(progress_message);
1125
1126   if (!full_)
1127     return;
1128
1129   if (did_call_start_loading_) {
1130     pp::PDF::DidStopLoading(this);
1131     did_call_start_loading_ = false;
1132   }
1133
1134   int content_restrictions =
1135       CONTENT_RESTRICTION_CUT | CONTENT_RESTRICTION_PASTE;
1136   if (!engine_->HasPermission(PDFEngine::PERMISSION_COPY))
1137     content_restrictions |= CONTENT_RESTRICTION_COPY;
1138
1139   pp::PDF::SetContentRestriction(this, content_restrictions);
1140
1141   uma_.HistogramCustomCounts("PDF.PageCount", page_count,
1142                              1, 1000000, 50);
1143 }
1144
1145 void OutOfProcessInstance::RotateClockwise() {
1146   engine_->RotateClockwise();
1147 }
1148
1149 void OutOfProcessInstance::RotateCounterclockwise() {
1150   engine_->RotateCounterclockwise();
1151 }
1152
1153 void OutOfProcessInstance::PreviewDocumentLoadComplete() {
1154   if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1155       preview_pages_info_.empty()) {
1156     return;
1157   }
1158
1159   preview_document_load_state_ = LOAD_STATE_COMPLETE;
1160
1161   int dest_page_index = preview_pages_info_.front().second;
1162   int src_page_index =
1163       ExtractPrintPreviewPageIndex(preview_pages_info_.front().first);
1164   if (src_page_index > 0 &&  dest_page_index > -1 && preview_engine_.get())
1165     engine_->AppendPage(preview_engine_.get(), dest_page_index);
1166
1167   preview_pages_info_.pop();
1168   // |print_preview_page_count_| is not updated yet. Do not load any
1169   // other preview pages till we get this information.
1170   if (print_preview_page_count_ == 0)
1171     return;
1172
1173   if (preview_pages_info_.size())
1174     LoadAvailablePreviewPage();
1175 }
1176
1177 void OutOfProcessInstance::DocumentLoadFailed() {
1178   DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1179   UserMetricsRecordAction("PDF.LoadFailure");
1180
1181   if (did_call_start_loading_) {
1182     pp::PDF::DidStopLoading(this);
1183     did_call_start_loading_ = false;
1184   }
1185
1186   document_load_state_ = LOAD_STATE_FAILED;
1187   paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1188
1189   // Send a progress value of -1 to indicate a failure.
1190   pp::VarDictionary message;
1191   message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
1192   message.Set(pp::Var(kJSProgressPercentage), pp::Var(-1));
1193   PostMessage(message);
1194 }
1195
1196 void OutOfProcessInstance::PreviewDocumentLoadFailed() {
1197   UserMetricsRecordAction("PDF.PreviewDocumentLoadFailure");
1198   if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1199       preview_pages_info_.empty()) {
1200     return;
1201   }
1202
1203   preview_document_load_state_ = LOAD_STATE_FAILED;
1204   preview_pages_info_.pop();
1205
1206   if (preview_pages_info_.size())
1207     LoadAvailablePreviewPage();
1208 }
1209
1210 pp::Instance* OutOfProcessInstance::GetPluginInstance() {
1211   return this;
1212 }
1213
1214 void OutOfProcessInstance::DocumentHasUnsupportedFeature(
1215     const std::string& feature) {
1216   std::string metric("PDF_Unsupported_");
1217   metric += feature;
1218   if (!unsupported_features_reported_.count(metric)) {
1219     unsupported_features_reported_.insert(metric);
1220     UserMetricsRecordAction(metric);
1221   }
1222
1223   // Since we use an info bar, only do this for full frame plugins..
1224   if (!full_)
1225     return;
1226
1227   if (told_browser_about_unsupported_feature_)
1228     return;
1229   told_browser_about_unsupported_feature_ = true;
1230
1231   pp::PDF::HasUnsupportedFeature(this);
1232 }
1233
1234 void OutOfProcessInstance::DocumentLoadProgress(uint32 available,
1235                                                 uint32 doc_size) {
1236   double progress = 0.0;
1237   if (doc_size == 0) {
1238     // Document size is unknown. Use heuristics.
1239     // We'll make progress logarithmic from 0 to 100M.
1240     static const double kFactor = log(100000000.0) / 100.0;
1241     if (available > 0) {
1242       progress = log(static_cast<double>(available)) / kFactor;
1243       if (progress > 100.0)
1244         progress = 100.0;
1245     }
1246   } else {
1247     progress = 100.0 * static_cast<double>(available) / doc_size;
1248   }
1249
1250   // We send 100% load progress in DocumentLoadComplete.
1251   if (progress >= 100)
1252     return;
1253
1254   // Avoid sending too many progress messages over PostMessage.
1255   if (progress > last_progress_sent_ + 1) {
1256     last_progress_sent_ = progress;
1257     pp::VarDictionary message;
1258     message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
1259     message.Set(pp::Var(kJSProgressPercentage), pp::Var(progress));
1260     PostMessage(message);
1261   }
1262 }
1263
1264 void OutOfProcessInstance::FormTextFieldFocusChange(bool in_focus) {
1265   if (!text_input_.get())
1266     return;
1267   if (in_focus)
1268     text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_TEXT);
1269   else
1270     text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_NONE);
1271 }
1272
1273 void OutOfProcessInstance::ResetRecentlySentFindUpdate(int32_t /* unused */) {
1274   recently_sent_find_update_ = false;
1275 }
1276
1277 void OutOfProcessInstance::OnGeometryChanged(double old_zoom,
1278                                              float old_device_scale) {
1279   if (zoom_ != old_zoom || device_scale_ != old_device_scale)
1280     engine_->ZoomUpdated(zoom_ * device_scale_);
1281
1282   available_area_ = pp::Rect(plugin_size_);
1283   int doc_width = GetDocumentPixelWidth();
1284   if (doc_width < available_area_.width()) {
1285     available_area_.Offset((available_area_.width() - doc_width) / 2, 0);
1286     available_area_.set_width(doc_width);
1287   }
1288   int doc_height = GetDocumentPixelHeight();
1289   if (doc_height < available_area_.height()) {
1290     available_area_.set_height(doc_height);
1291   }
1292
1293   CalculateBackgroundParts();
1294   engine_->PageOffsetUpdated(available_area_.point());
1295   engine_->PluginSizeUpdated(available_area_.size());
1296
1297   if (!document_size_.GetArea())
1298     return;
1299   paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1300 }
1301
1302 void OutOfProcessInstance::LoadUrl(const std::string& url) {
1303   LoadUrlInternal(url, &embed_loader_, &OutOfProcessInstance::DidOpen);
1304 }
1305
1306 void OutOfProcessInstance::LoadPreviewUrl(const std::string& url) {
1307   LoadUrlInternal(url, &embed_preview_loader_,
1308                   &OutOfProcessInstance::DidOpenPreview);
1309 }
1310
1311 void OutOfProcessInstance::LoadUrlInternal(
1312     const std::string& url,
1313     pp::URLLoader* loader,
1314     void (OutOfProcessInstance::* method)(int32_t)) {
1315   pp::URLRequestInfo request(this);
1316   request.SetURL(url);
1317   request.SetMethod("GET");
1318
1319   *loader = CreateURLLoaderInternal();
1320   pp::CompletionCallback callback = loader_factory_.NewCallback(method);
1321   int rv = loader->Open(request, callback);
1322   if (rv != PP_OK_COMPLETIONPENDING)
1323     callback.Run(rv);
1324 }
1325
1326 pp::URLLoader OutOfProcessInstance::CreateURLLoaderInternal() {
1327   pp::URLLoader loader(this);
1328
1329   const PPB_URLLoaderTrusted* trusted_interface =
1330       reinterpret_cast<const PPB_URLLoaderTrusted*>(
1331           pp::Module::Get()->GetBrowserInterface(
1332               PPB_URLLOADERTRUSTED_INTERFACE));
1333   if (trusted_interface)
1334     trusted_interface->GrantUniversalAccess(loader.pp_resource());
1335   return loader;
1336 }
1337
1338 void OutOfProcessInstance::SetZoom(double scale) {
1339   double old_zoom = zoom_;
1340   zoom_ = scale;
1341   OnGeometryChanged(old_zoom, device_scale_);
1342 }
1343
1344 std::string OutOfProcessInstance::GetLocalizedString(PP_ResourceString id) {
1345   pp::Var rv(pp::PDF::GetLocalizedString(this, id));
1346   if (!rv.is_string())
1347     return std::string();
1348
1349   return rv.AsString();
1350 }
1351
1352 void OutOfProcessInstance::AppendBlankPrintPreviewPages() {
1353   if (print_preview_page_count_ == 0)
1354     return;
1355   engine_->AppendBlankPages(print_preview_page_count_);
1356   if (preview_pages_info_.size() > 0)
1357     LoadAvailablePreviewPage();
1358 }
1359
1360 bool OutOfProcessInstance::IsPrintPreview() {
1361   return IsPrintPreviewUrl(url_);
1362 }
1363
1364 uint32 OutOfProcessInstance::GetBackgroundColor() {
1365   return background_color_;
1366 }
1367
1368 void OutOfProcessInstance::IsSelectingChanged(bool is_selecting) {
1369   pp::VarDictionary message;
1370   message.Set(kType, kJSSetIsSelectingType);
1371   message.Set(kJSIsSelecting, pp::Var(is_selecting));
1372   PostMessage(message);
1373 }
1374
1375 void OutOfProcessInstance::ProcessPreviewPageInfo(const std::string& url,
1376                                                   int dst_page_index) {
1377   if (!IsPrintPreview())
1378     return;
1379
1380   int src_page_index = ExtractPrintPreviewPageIndex(url);
1381   if (src_page_index < 1)
1382     return;
1383
1384   preview_pages_info_.push(std::make_pair(url, dst_page_index));
1385   LoadAvailablePreviewPage();
1386 }
1387
1388 void OutOfProcessInstance::LoadAvailablePreviewPage() {
1389   if (preview_pages_info_.size() <= 0 ||
1390       document_load_state_ != LOAD_STATE_COMPLETE) {
1391     return;
1392   }
1393
1394   std::string url = preview_pages_info_.front().first;
1395   int dst_page_index = preview_pages_info_.front().second;
1396   int src_page_index = ExtractPrintPreviewPageIndex(url);
1397   if (src_page_index < 1 ||
1398       dst_page_index >= print_preview_page_count_ ||
1399       preview_document_load_state_ == LOAD_STATE_LOADING) {
1400     return;
1401   }
1402
1403   preview_document_load_state_ = LOAD_STATE_LOADING;
1404   LoadPreviewUrl(url);
1405 }
1406
1407 void OutOfProcessInstance::UserMetricsRecordAction(
1408     const std::string& action) {
1409   // TODO(raymes): Move this function to PPB_UMA_Private.
1410   pp::PDF::UserMetricsRecordAction(this, pp::Var(action));
1411 }
1412
1413 pp::FloatPoint OutOfProcessInstance::BoundScrollOffsetToDocument(
1414     const pp::FloatPoint& scroll_offset) {
1415   float max_x = document_size_.width() * zoom_ - plugin_dip_size_.width();
1416   float x = std::max(std::min(scroll_offset.x(), max_x), 0.0f);
1417   float max_y = document_size_.height() * zoom_ - plugin_dip_size_.height();
1418   float y = std::max(std::min(scroll_offset.y(), max_y), 0.0f);
1419   return pp::FloatPoint(x, y);
1420 }
1421
1422 }  // namespace chrome_pdf