pdf/out_of_process_instance.cc

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