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 = 0xFF424242;
  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   // Explicitly reset the PDFEngine during destruction as it may call back into
 299   // this object.
 300   engine_.reset();
 301 }
 302
 303 bool OutOfProcessInstance::Init(uint32_t argc,
 304                                 const char* argn[],
 305                                 const char* argv[]) {
 306   // Check if the PDF is being loaded in the PDF chrome extension. We only allow
 307   // the plugin to be put into "full frame" mode when it is being loaded in the
 308   // extension because this enables some features that we don't want pages
 309   // abusing outside of the extension.
 310   pp::Var document_url_var = pp::URLUtil_Dev::Get()->GetDocumentURL(this);
 311   std::string document_url = document_url_var.is_string() ?
 312       document_url_var.AsString() : std::string();
 313   std::string extension_url = std::string(kChromeExtension);
 314   bool in_extension =
 315       !document_url.compare(0, extension_url.size(), extension_url);
 316
 317   if (in_extension) {
 318     // Check if the plugin is full frame. This is passed in from JS.
 319     for (uint32_t i = 0; i < argc; ++i) {
 320       if (strcmp(argn[i], "full-frame") == 0) {
 321         full_ = true;
 322         break;
 323       }
 324     }
 325   }
 326
 327   // Only allow the plugin to handle find requests if it is full frame.
 328   if (full_)
 329     SetPluginToHandleFindRequests();
 330
 331   // Send translated strings to the extension where they will be displayed.
 332   // TODO(raymes): It would be better to get these in the extension directly
 333   // through an API but no such API currently exists.
 334   pp::VarDictionary translated_strings;
 335   translated_strings.Set(kType, kJSSetTranslatedStringsType);
 336   translated_strings.Set(kJSGetPasswordString,
 337       GetLocalizedString(PP_RESOURCESTRING_PDFGETPASSWORD));
 338   translated_strings.Set(kJSLoadingString,
 339       GetLocalizedString(PP_RESOURCESTRING_PDFLOADING));
 340   translated_strings.Set(kJSLoadFailedString,
 341       GetLocalizedString(PP_RESOURCESTRING_PDFLOAD_FAILED));
 342   PostMessage(translated_strings);
 343
 344   text_input_.reset(new pp::TextInput_Dev(this));
 345
 346   const char* stream_url = NULL;
 347   const char* original_url = NULL;
 348   const char* headers = NULL;
 349   bool is_material = false;
 350   for (uint32_t i = 0; i < argc; ++i) {
 351     if (strcmp(argn[i], "src") == 0)
 352       original_url = argv[i];
 353     else if (strcmp(argn[i], "stream-url") == 0)
 354       stream_url = argv[i];
 355     else if (strcmp(argn[i], "headers") == 0)
 356       headers = argv[i];
 357     else if (strcmp(argn[i], "is-material") == 0)
 358       is_material = true;
 359   }
 360
 361   if (is_material)
 362     background_color_ = kBackgroundColorMaterial;
 363   else
 364     background_color_ = kBackgroundColor;
 365
 366   // TODO(raymes): This is a hack to ensure that if no headers are passed in
 367   // then we get the right MIME type. When the in process plugin is removed we
 368   // can fix the document loader properly and remove this hack.
 369   if (!headers || strcmp(headers, "") == 0)
 370     headers = "content-type: application/pdf";
 371
 372   if (!original_url)
 373     return false;
 374
 375   if (!stream_url)
 376     stream_url = original_url;
 377
 378   // If we're in print preview mode we don't need to load the document yet.
 379   // A |kJSResetPrintPreviewModeType| message will be sent to the plugin letting
 380   // it know the url to load. By not loading here we avoid loading the same
 381   // document twice.
 382   if (IsPrintPreviewUrl(original_url))
 383     return true;
 384
 385   LoadUrl(stream_url);
 386   url_ = original_url;
 387   return engine_->New(original_url, headers);
 388 }
 389
 390 void OutOfProcessInstance::HandleMessage(const pp::Var& message) {
 391   pp::VarDictionary dict(message);
 392   if (!dict.Get(kType).is_string()) {
 393     NOTREACHED();
 394     return;
 395   }
 396
 397   std::string type = dict.Get(kType).AsString();
 398
 399   if (type == kJSViewportType &&
 400       dict.Get(pp::Var(kJSXOffset)).is_number() &&
 401       dict.Get(pp::Var(kJSYOffset)).is_number() &&
 402       dict.Get(pp::Var(kJSZoom)).is_number()) {
 403     received_viewport_message_ = true;
 404     stop_scrolling_ = false;
 405     double zoom = dict.Get(pp::Var(kJSZoom)).AsDouble();
 406     pp::FloatPoint scroll_offset(dict.Get(pp::Var(kJSXOffset)).AsDouble(),
 407                                  dict.Get(pp::Var(kJSYOffset)).AsDouble());
 408
 409     // Bound the input parameters.
 410     zoom = std::max(kMinZoom, zoom);
 411     SetZoom(zoom);
 412     scroll_offset = BoundScrollOffsetToDocument(scroll_offset);
 413     engine_->ScrolledToXPosition(scroll_offset.x() * device_scale_);
 414     engine_->ScrolledToYPosition(scroll_offset.y() * device_scale_);
 415   } else if (type == kJSGetPasswordCompleteType &&
 416              dict.Get(pp::Var(kJSPassword)).is_string()) {
 417     if (password_callback_) {
 418       pp::CompletionCallbackWithOutput<pp::Var> callback = *password_callback_;
 419       password_callback_.reset();
 420       *callback.output() = dict.Get(pp::Var(kJSPassword)).pp_var();
 421       callback.Run(PP_OK);
 422     } else {
 423       NOTREACHED();
 424     }
 425   } else if (type == kJSPrintType) {
 426     Print();
 427   } else if (type == kJSSaveType) {
 428     pp::PDF::SaveAs(this);
 429   } else if (type == kJSRotateClockwiseType) {
 430     RotateClockwise();
 431   } else if (type == kJSRotateCounterclockwiseType) {
 432     RotateCounterclockwise();
 433   } else if (type == kJSSelectAllType) {
 434     engine_->SelectAll();
 435   } else if (type == kJSResetPrintPreviewModeType &&
 436              dict.Get(pp::Var(kJSPrintPreviewUrl)).is_string() &&
 437              dict.Get(pp::Var(kJSPrintPreviewGrayscale)).is_bool() &&
 438              dict.Get(pp::Var(kJSPrintPreviewPageCount)).is_int()) {
 439     url_ = dict.Get(pp::Var(kJSPrintPreviewUrl)).AsString();
 440     preview_pages_info_ = std::queue<PreviewPageInfo>();
 441     preview_document_load_state_ = LOAD_STATE_COMPLETE;
 442     document_load_state_ = LOAD_STATE_LOADING;
 443     LoadUrl(url_);
 444     preview_engine_.reset();
 445     engine_.reset(PDFEngine::Create(this));
 446     engine_->SetGrayscale(dict.Get(pp::Var(kJSPrintPreviewGrayscale)).AsBool());
 447     engine_->New(url_.c_str());
 448
 449     print_preview_page_count_ =
 450         std::max(dict.Get(pp::Var(kJSPrintPreviewPageCount)).AsInt(), 0);
 451
 452     paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
 453   } else if (type == kJSLoadPreviewPageType &&
 454              dict.Get(pp::Var(kJSPreviewPageUrl)).is_string() &&
 455              dict.Get(pp::Var(kJSPreviewPageIndex)).is_int()) {
 456     ProcessPreviewPageInfo(dict.Get(pp::Var(kJSPreviewPageUrl)).AsString(),
 457                            dict.Get(pp::Var(kJSPreviewPageIndex)).AsInt());
 458   } else if (type == kJSGetAccessibilityJSONType) {
 459     pp::VarDictionary reply;
 460     reply.Set(pp::Var(kType), pp::Var(kJSGetAccessibilityJSONReplyType));
 461     if (dict.Get(pp::Var(kJSAccessibilityPageNumber)).is_int()) {
 462       int page = dict.Get(pp::Var(kJSAccessibilityPageNumber)).AsInt();
 463       reply.Set(pp::Var(kJSAccessibilityJSON),
 464                         pp::Var(engine_->GetPageAsJSON(page)));
 465     } else {
 466       base::DictionaryValue node;
 467       node.SetInteger(kAccessibleNumberOfPages, engine_->GetNumberOfPages());
 468       node.SetBoolean(kAccessibleLoaded,
 469                       document_load_state_ != LOAD_STATE_LOADING);
 470       bool has_permissions =
 471           engine_->HasPermission(PDFEngine::PERMISSION_COPY) ||
 472           engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE);
 473       node.SetBoolean(kAccessibleCopyable, has_permissions);
 474       std::string json;
 475       base::JSONWriter::Write(node, &json);
 476       reply.Set(pp::Var(kJSAccessibilityJSON), pp::Var(json));
 477     }
 478     PostMessage(reply);
 479   } else if (type == kJSStopScrollingType) {
 480     stop_scrolling_ = true;
 481   } else if (type == kJSGetSelectedTextType) {
 482     std::string selected_text = engine_->GetSelectedText();
 483     // Always return unix newlines to JS.
 484     base::ReplaceChars(selected_text, "\r", std::string(), &selected_text);
 485     pp::VarDictionary reply;
 486     reply.Set(pp::Var(kType), pp::Var(kJSGetSelectedTextReplyType));
 487     reply.Set(pp::Var(kJSSelectedText), selected_text);
 488     PostMessage(reply);
 489   } else if (type == KJSGetNamedDestinationType &&
 490              dict.Get(pp::Var(KJSGetNamedDestination)).is_string()) {
 491     int page_number = engine_->GetNamedDestinationPage(
 492         dict.Get(pp::Var(KJSGetNamedDestination)).AsString());
 493     pp::VarDictionary reply;
 494     reply.Set(pp::Var(kType), pp::Var(kJSGetNamedDestinationReplyType));
 495     if (page_number >= 0)
 496       reply.Set(pp::Var(kJSNamedDestinationPageNumber), page_number);
 497     PostMessage(reply);
 498   } else {
 499     NOTREACHED();
 500   }
 501 }
 502
 503 bool OutOfProcessInstance::HandleInputEvent(
 504     const pp::InputEvent& event) {
 505   // To simplify things, convert the event into device coordinates if it is
 506   // a mouse event.
 507   pp::InputEvent event_device_res(event);
 508   {
 509     pp::MouseInputEvent mouse_event(event);
 510     if (!mouse_event.is_null()) {
 511       pp::Point point = mouse_event.GetPosition();
 512       pp::Point movement = mouse_event.GetMovement();
 513       ScalePoint(device_scale_, &point);
 514       ScalePoint(device_scale_, &movement);
 515       mouse_event = pp::MouseInputEvent(
 516           this,
 517           event.GetType(),
 518           event.GetTimeStamp(),
 519           event.GetModifiers(),
 520           mouse_event.GetButton(),
 521           point,
 522           mouse_event.GetClickCount(),
 523           movement);
 524       event_device_res = mouse_event;
 525     }
 526   }
 527
 528   pp::InputEvent offset_event(event_device_res);
 529   switch (offset_event.GetType()) {
 530     case PP_INPUTEVENT_TYPE_MOUSEDOWN:
 531     case PP_INPUTEVENT_TYPE_MOUSEUP:
 532     case PP_INPUTEVENT_TYPE_MOUSEMOVE:
 533     case PP_INPUTEVENT_TYPE_MOUSEENTER:
 534     case PP_INPUTEVENT_TYPE_MOUSELEAVE: {
 535       pp::MouseInputEvent mouse_event(event_device_res);
 536       pp::MouseInputEvent mouse_event_dip(event);
 537       pp::Point point = mouse_event.GetPosition();
 538       point.set_x(point.x() - available_area_.x());
 539       offset_event = pp::MouseInputEvent(
 540           this,
 541           event.GetType(),
 542           event.GetTimeStamp(),
 543           event.GetModifiers(),
 544           mouse_event.GetButton(),
 545           point,
 546           mouse_event.GetClickCount(),
 547           mouse_event.GetMovement());
 548       break;
 549     }
 550     default:
 551       break;
 552   }
 553   if (engine_->HandleEvent(offset_event))
 554     return true;
 555
 556   // Middle click is used for scrolling and is handled by the container page.
 557   pp::MouseInputEvent mouse_event(event_device_res);
 558   if (!mouse_event.is_null() &&
 559       mouse_event.GetButton() == PP_INPUTEVENT_MOUSEBUTTON_MIDDLE) {
 560     return false;
 561   }
 562
 563   // Return true for unhandled clicks so the plugin takes focus.
 564   return (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN);
 565 }
 566
 567 void OutOfProcessInstance::DidChangeView(const pp::View& view) {
 568   pp::Rect view_rect(view.GetRect());
 569   float old_device_scale = device_scale_;
 570   float device_scale = view.GetDeviceScale();
 571   pp::Size view_device_size(view_rect.width() * device_scale,
 572                             view_rect.height() * device_scale);
 573
 574   if (view_device_size != plugin_size_ || device_scale != device_scale_) {
 575     device_scale_ = device_scale;
 576     plugin_dip_size_ = view_rect.size();
 577     plugin_size_ = view_device_size;
 578
 579     paint_manager_.SetSize(view_device_size, device_scale_);
 580
 581     pp::Size new_image_data_size = PaintManager::GetNewContextSize(
 582         image_data_.size(),
 583         plugin_size_);
 584     if (new_image_data_size != image_data_.size()) {
 585       image_data_ = pp::ImageData(this,
 586                                   PP_IMAGEDATAFORMAT_BGRA_PREMUL,
 587                                   new_image_data_size,
 588                                   false);
 589       first_paint_ = true;
 590     }
 591
 592     if (image_data_.is_null()) {
 593       DCHECK(plugin_size_.IsEmpty());
 594       return;
 595     }
 596
 597     OnGeometryChanged(zoom_, old_device_scale);
 598   }
 599
 600   if (!stop_scrolling_) {
 601     pp::Point scroll_offset(view.GetScrollOffset());
 602     pp::FloatPoint scroll_offset_float(scroll_offset.x(),
 603                                        scroll_offset.y());
 604     scroll_offset_float = BoundScrollOffsetToDocument(scroll_offset_float);
 605     engine_->ScrolledToXPosition(scroll_offset_float.x() * device_scale_);
 606     engine_->ScrolledToYPosition(scroll_offset_float.y() * device_scale_);
 607   }
 608 }
 609
 610 void OutOfProcessInstance::GetPrintPresetOptionsFromDocument(
 611     PP_PdfPrintPresetOptions_Dev* options) {
 612   options->is_scaling_disabled = PP_FromBool(IsPrintScalingDisabled());
 613   options->duplex =
 614       static_cast<PP_PrivateDuplexMode_Dev>(engine_->GetDuplexType());
 615   options->copies = engine_->GetCopiesToPrint();
 616   pp::Size uniform_page_size;
 617   options->is_page_size_uniform =
 618       PP_FromBool(engine_->GetPageSizeAndUniformity(&uniform_page_size));
 619   options->uniform_page_size = uniform_page_size;
 620 }
 621
 622 pp::Var OutOfProcessInstance::GetLinkAtPosition(
 623     const pp::Point& point) {
 624   pp::Point offset_point(point);
 625   ScalePoint(device_scale_, &offset_point);
 626   offset_point.set_x(offset_point.x() - available_area_.x());
 627   return engine_->GetLinkAtPosition(offset_point);
 628 }
 629
 630 pp::Var OutOfProcessInstance::GetSelectedText(bool html) {
 631   if (html)
 632     return pp::Var();
 633   return engine_->GetSelectedText();
 634 }
 635
 636 uint32_t OutOfProcessInstance::QuerySupportedPrintOutputFormats() {
 637   return engine_->QuerySupportedPrintOutputFormats();
 638 }
 639
 640 int32_t OutOfProcessInstance::PrintBegin(
 641     const PP_PrintSettings_Dev& print_settings) {
 642   // For us num_pages is always equal to the number of pages in the PDF
 643   // document irrespective of the printable area.
 644   int32_t ret = engine_->GetNumberOfPages();
 645   if (!ret)
 646     return 0;
 647
 648   uint32_t supported_formats = engine_->QuerySupportedPrintOutputFormats();
 649   if ((print_settings.format & supported_formats) == 0)
 650     return 0;
 651
 652   print_settings_.is_printing = true;
 653   print_settings_.pepper_print_settings = print_settings;
 654   engine_->PrintBegin();
 655   return ret;
 656 }
 657
 658 pp::Resource OutOfProcessInstance::PrintPages(
 659     const PP_PrintPageNumberRange_Dev* page_ranges,
 660     uint32_t page_range_count) {
 661   if (!print_settings_.is_printing)
 662     return pp::Resource();
 663
 664   print_settings_.print_pages_called_ = true;
 665   return engine_->PrintPages(page_ranges, page_range_count,
 666                              print_settings_.pepper_print_settings);
 667 }
 668
 669 void OutOfProcessInstance::PrintEnd() {
 670   if (print_settings_.print_pages_called_)
 671     UserMetricsRecordAction("PDF.PrintPage");
 672   print_settings_.Clear();
 673   engine_->PrintEnd();
 674 }
 675
 676 bool OutOfProcessInstance::IsPrintScalingDisabled() {
 677   return !engine_->GetPrintScaling();
 678 }
 679
 680 bool OutOfProcessInstance::StartFind(const std::string& text,
 681                                                  bool case_sensitive) {
 682   engine_->StartFind(text.c_str(), case_sensitive);
 683   return true;
 684 }
 685
 686 void OutOfProcessInstance::SelectFindResult(bool forward) {
 687   engine_->SelectFindResult(forward);
 688 }
 689
 690 void OutOfProcessInstance::StopFind() {
 691   engine_->StopFind();
 692   tickmarks_.clear();
 693   SetTickmarks(tickmarks_);
 694 }
 695
 696 void OutOfProcessInstance::OnPaint(
 697     const std::vector<pp::Rect>& paint_rects,
 698     std::vector<PaintManager::ReadyRect>* ready,
 699     std::vector<pp::Rect>* pending) {
 700   if (image_data_.is_null()) {
 701     DCHECK(plugin_size_.IsEmpty());
 702     return;
 703   }
 704   if (first_paint_) {
 705     first_paint_ = false;
 706     pp::Rect rect = pp::Rect(pp::Point(), image_data_.size());
 707     FillRect(rect, background_color_);
 708     ready->push_back(PaintManager::ReadyRect(rect, image_data_, true));
 709   }
 710
 711   if (!received_viewport_message_)
 712     return;
 713
 714   engine_->PrePaint();
 715
 716   for (size_t i = 0; i < paint_rects.size(); i++) {
 717     // Intersect with plugin area since there could be pending invalidates from
 718     // when the plugin area was larger.
 719     pp::Rect rect =
 720         paint_rects[i].Intersect(pp::Rect(pp::Point(), plugin_size_));
 721     if (rect.IsEmpty())
 722       continue;
 723
 724     pp::Rect pdf_rect = available_area_.Intersect(rect);
 725     if (!pdf_rect.IsEmpty()) {
 726       pdf_rect.Offset(available_area_.x() * -1, 0);
 727
 728       std::vector<pp::Rect> pdf_ready;
 729       std::vector<pp::Rect> pdf_pending;
 730       engine_->Paint(pdf_rect, &image_data_, &pdf_ready, &pdf_pending);
 731       for (size_t j = 0; j < pdf_ready.size(); ++j) {
 732         pdf_ready[j].Offset(available_area_.point());
 733         ready->push_back(
 734             PaintManager::ReadyRect(pdf_ready[j], image_data_, false));
 735       }
 736       for (size_t j = 0; j < pdf_pending.size(); ++j) {
 737         pdf_pending[j].Offset(available_area_.point());
 738         pending->push_back(pdf_pending[j]);
 739       }
 740     }
 741
 742     for (size_t j = 0; j < background_parts_.size(); ++j) {
 743       pp::Rect intersection = background_parts_[j].location.Intersect(rect);
 744       if (!intersection.IsEmpty()) {
 745         FillRect(intersection, background_parts_[j].color);
 746         ready->push_back(
 747             PaintManager::ReadyRect(intersection, image_data_, false));
 748       }
 749     }
 750   }
 751
 752   engine_->PostPaint();
 753 }
 754
 755 void OutOfProcessInstance::DidOpen(int32_t result) {
 756   if (result == PP_OK) {
 757     if (!engine_->HandleDocumentLoad(embed_loader_)) {
 758       document_load_state_ = LOAD_STATE_LOADING;
 759       DocumentLoadFailed();
 760     }
 761   } else if (result != PP_ERROR_ABORTED) {  // Can happen in tests.
 762     NOTREACHED();
 763     DocumentLoadFailed();
 764   }
 765
 766   // If it's a progressive load, cancel the stream URL request so that requests
 767   // can be made on the original URL.
 768   // TODO(raymes): Make this clearer once the in-process plugin is deleted.
 769   if (engine_->IsProgressiveLoad()) {
 770     pp::VarDictionary message;
 771     message.Set(kType, kJSCancelStreamUrlType);
 772     PostMessage(message);
 773   }
 774 }
 775
 776 void OutOfProcessInstance::DidOpenPreview(int32_t result) {
 777   if (result == PP_OK) {
 778     preview_engine_.reset(PDFEngine::Create(new PreviewModeClient(this)));
 779     preview_engine_->HandleDocumentLoad(embed_preview_loader_);
 780   } else {
 781     NOTREACHED();
 782   }
 783 }
 784
 785 void OutOfProcessInstance::OnClientTimerFired(int32_t id) {
 786   engine_->OnCallback(id);
 787 }
 788
 789 void OutOfProcessInstance::CalculateBackgroundParts() {
 790   background_parts_.clear();
 791   int left_width = available_area_.x();
 792   int right_start = available_area_.right();
 793   int right_width = abs(plugin_size_.width() - available_area_.right());
 794   int bottom = std::min(available_area_.bottom(), plugin_size_.height());
 795
 796   // Add the left, right, and bottom rectangles.  Note: we assume only
 797   // horizontal centering.
 798   BackgroundPart part = {
 799     pp::Rect(0, 0, left_width, bottom),
 800     background_color_
 801   };
 802   if (!part.location.IsEmpty())
 803     background_parts_.push_back(part);
 804   part.location = pp::Rect(right_start, 0, right_width, bottom);
 805   if (!part.location.IsEmpty())
 806     background_parts_.push_back(part);
 807   part.location = pp::Rect(
 808       0, bottom, plugin_size_.width(), plugin_size_.height() - bottom);
 809   if (!part.location.IsEmpty())
 810     background_parts_.push_back(part);
 811 }
 812
 813 int OutOfProcessInstance::GetDocumentPixelWidth() const {
 814   return static_cast<int>(ceil(document_size_.width() * zoom_ * device_scale_));
 815 }
 816
 817 int OutOfProcessInstance::GetDocumentPixelHeight() const {
 818   return static_cast<int>(
 819       ceil(document_size_.height() * zoom_ * device_scale_));
 820 }
 821
 822 void OutOfProcessInstance::FillRect(const pp::Rect& rect, uint32 color) {
 823   DCHECK(!image_data_.is_null() || rect.IsEmpty());
 824   uint32* buffer_start = static_cast<uint32*>(image_data_.data());
 825   int stride = image_data_.stride();
 826   uint32* ptr = buffer_start + rect.y() * stride / 4 + rect.x();
 827   int height = rect.height();
 828   int width = rect.width();
 829   for (int y = 0; y < height; ++y) {
 830     for (int x = 0; x < width; ++x)
 831       *(ptr + x) = color;
 832     ptr += stride /4;
 833   }
 834 }
 835
 836 void OutOfProcessInstance::DocumentSizeUpdated(const pp::Size& size) {
 837   document_size_ = size;
 838
 839   pp::VarDictionary dimensions;
 840   dimensions.Set(kType, kJSDocumentDimensionsType);
 841   dimensions.Set(kJSDocumentWidth, pp::Var(document_size_.width()));
 842   dimensions.Set(kJSDocumentHeight, pp::Var(document_size_.height()));
 843   pp::VarArray page_dimensions_array;
 844   int num_pages = engine_->GetNumberOfPages();
 845   for (int i = 0; i < num_pages; ++i) {
 846     pp::Rect page_rect = engine_->GetPageRect(i);
 847     pp::VarDictionary page_dimensions;
 848     page_dimensions.Set(kJSPageX, pp::Var(page_rect.x()));
 849     page_dimensions.Set(kJSPageY, pp::Var(page_rect.y()));
 850     page_dimensions.Set(kJSPageWidth, pp::Var(page_rect.width()));
 851     page_dimensions.Set(kJSPageHeight, pp::Var(page_rect.height()));
 852     page_dimensions_array.Set(i, page_dimensions);
 853   }
 854   dimensions.Set(kJSPageDimensions, page_dimensions_array);
 855   PostMessage(dimensions);
 856
 857   OnGeometryChanged(zoom_, device_scale_);
 858 }
 859
 860 void OutOfProcessInstance::Invalidate(const pp::Rect& rect) {
 861   pp::Rect offset_rect(rect);
 862   offset_rect.Offset(available_area_.point());
 863   paint_manager_.InvalidateRect(offset_rect);
 864 }
 865
 866 void OutOfProcessInstance::Scroll(const pp::Point& point) {
 867   if (!image_data_.is_null())
 868     paint_manager_.ScrollRect(available_area_, point);
 869 }
 870
 871 void OutOfProcessInstance::ScrollToX(int x) {
 872   pp::VarDictionary position;
 873   position.Set(kType, kJSSetScrollPositionType);
 874   position.Set(kJSPositionX, pp::Var(x / device_scale_));
 875   PostMessage(position);
 876 }
 877
 878 void OutOfProcessInstance::ScrollToY(int y) {
 879   pp::VarDictionary position;
 880   position.Set(kType, kJSSetScrollPositionType);
 881   position.Set(kJSPositionY, pp::Var(y / device_scale_));
 882   PostMessage(position);
 883 }
 884
 885 void OutOfProcessInstance::ScrollToPage(int page) {
 886   if (engine_->GetNumberOfPages() == 0)
 887     return;
 888
 889   pp::VarDictionary message;
 890   message.Set(kType, kJSGoToPageType);
 891   message.Set(kJSPageNumber, pp::Var(page));
 892   PostMessage(message);
 893 }
 894
 895 void OutOfProcessInstance::NavigateTo(const std::string& url,
 896                                       bool open_in_new_tab) {
 897   pp::VarDictionary message;
 898   message.Set(kType, kJSNavigateType);
 899   message.Set(kJSNavigateUrl, url);
 900   message.Set(kJSNavigateNewTab, open_in_new_tab);
 901   PostMessage(message);
 902 }
 903
 904 void OutOfProcessInstance::UpdateCursor(PP_CursorType_Dev cursor) {
 905   if (cursor == cursor_)
 906     return;
 907   cursor_ = cursor;
 908
 909   const PPB_CursorControl_Dev* cursor_interface =
 910       reinterpret_cast<const PPB_CursorControl_Dev*>(
 911       pp::Module::Get()->GetBrowserInterface(PPB_CURSOR_CONTROL_DEV_INTERFACE));
 912   if (!cursor_interface) {
 913     NOTREACHED();
 914     return;
 915   }
 916
 917   cursor_interface->SetCursor(
 918       pp_instance(), cursor_, pp::ImageData().pp_resource(), NULL);
 919 }
 920
 921 void OutOfProcessInstance::UpdateTickMarks(
 922     const std::vector<pp::Rect>& tickmarks) {
 923   float inverse_scale = 1.0f / device_scale_;
 924   std::vector<pp::Rect> scaled_tickmarks = tickmarks;
 925   for (size_t i = 0; i < scaled_tickmarks.size(); i++)
 926     ScaleRect(inverse_scale, &scaled_tickmarks[i]);
 927   tickmarks_ = scaled_tickmarks;
 928 }
 929
 930 void OutOfProcessInstance::NotifyNumberOfFindResultsChanged(int total,
 931                                                             bool final_result) {
 932   // We don't want to spam the renderer with too many updates to the number of
 933   // find results. Don't send an update if we sent one too recently. If it's the
 934   // final update, we always send it though.
 935   if (final_result) {
 936     NumberOfFindResultsChanged(total, final_result);
 937     SetTickmarks(tickmarks_);
 938     return;
 939   }
 940
 941   if (recently_sent_find_update_)
 942     return;
 943
 944   NumberOfFindResultsChanged(total, final_result);
 945   SetTickmarks(tickmarks_);
 946   recently_sent_find_update_ = true;
 947   pp::CompletionCallback callback =
 948       timer_factory_.NewCallback(
 949           &OutOfProcessInstance::ResetRecentlySentFindUpdate);
 950   pp::Module::Get()->core()->CallOnMainThread(kFindResultCooldownMs,
 951                                               callback, 0);
 952 }
 953
 954 void OutOfProcessInstance::NotifySelectedFindResultChanged(
 955     int current_find_index) {
 956   DCHECK_GE(current_find_index, 0);
 957   SelectedFindResultChanged(current_find_index);
 958 }
 959
 960 void OutOfProcessInstance::GetDocumentPassword(
 961     pp::CompletionCallbackWithOutput<pp::Var> callback) {
 962   if (password_callback_) {
 963     NOTREACHED();
 964     return;
 965   }
 966
 967   password_callback_.reset(
 968       new pp::CompletionCallbackWithOutput<pp::Var>(callback));
 969   pp::VarDictionary message;
 970   message.Set(pp::Var(kType), pp::Var(kJSGetPasswordType));
 971   PostMessage(message);
 972 }
 973
 974 void OutOfProcessInstance::Alert(const std::string& message) {
 975   ModalDialog(this, "alert", message, std::string());
 976 }
 977
 978 bool OutOfProcessInstance::Confirm(const std::string& message) {
 979   pp::Var result = ModalDialog(this, "confirm", message, std::string());
 980   return result.is_bool() ? result.AsBool() : false;
 981 }
 982
 983 std::string OutOfProcessInstance::Prompt(const std::string& question,
 984                                          const std::string& default_answer) {
 985   pp::Var result = ModalDialog(this, "prompt", question, default_answer);
 986   return result.is_string() ? result.AsString() : std::string();
 987 }
 988
 989 std::string OutOfProcessInstance::GetURL() {
 990   return url_;
 991 }
 992
 993 void OutOfProcessInstance::Email(const std::string& to,
 994                                  const std::string& cc,
 995                                  const std::string& bcc,
 996                                  const std::string& subject,
 997                                  const std::string& body) {
 998   pp::VarDictionary message;
 999   message.Set(pp::Var(kType), pp::Var(kJSEmailType));
1000   message.Set(pp::Var(kJSEmailTo),
1001               pp::Var(net::EscapeUrlEncodedData(to, false)));
1002   message.Set(pp::Var(kJSEmailCc),
1003               pp::Var(net::EscapeUrlEncodedData(cc, false)));
1004   message.Set(pp::Var(kJSEmailBcc),
1005               pp::Var(net::EscapeUrlEncodedData(bcc, false)));
1006   message.Set(pp::Var(kJSEmailSubject),
1007               pp::Var(net::EscapeUrlEncodedData(subject, false)));
1008   message.Set(pp::Var(kJSEmailBody),
1009               pp::Var(net::EscapeUrlEncodedData(body, false)));
1010   PostMessage(message);
1011 }
1012
1013 void OutOfProcessInstance::Print() {
1014   if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1015       !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) {
1016     return;
1017   }
1018
1019   pp::CompletionCallback callback =
1020       print_callback_factory_.NewCallback(&OutOfProcessInstance::OnPrint);
1021   pp::Module::Get()->core()->CallOnMainThread(0, callback);
1022 }
1023
1024 void OutOfProcessInstance::OnPrint(int32_t) {
1025   pp::PDF::Print(this);
1026 }
1027
1028 void OutOfProcessInstance::SubmitForm(const std::string& url,
1029                                       const void* data,
1030                                       int length) {
1031   pp::URLRequestInfo request(this);
1032   request.SetURL(url);
1033   request.SetMethod("POST");
1034   request.AppendDataToBody(reinterpret_cast<const char*>(data), length);
1035
1036   pp::CompletionCallback callback =
1037       form_factory_.NewCallback(&OutOfProcessInstance::FormDidOpen);
1038   form_loader_ = CreateURLLoaderInternal();
1039   int rv = form_loader_.Open(request, callback);
1040   if (rv != PP_OK_COMPLETIONPENDING)
1041     callback.Run(rv);
1042 }
1043
1044 void OutOfProcessInstance::FormDidOpen(int32_t result) {
1045   // TODO: inform the user of success/failure.
1046   if (result != PP_OK) {
1047     NOTREACHED();
1048   }
1049 }
1050
1051 std::string OutOfProcessInstance::ShowFileSelectionDialog() {
1052   // Seems like very low priority to implement, since the pdf has no way to get
1053   // the file data anyways.  Javascript doesn't let you do this synchronously.
1054   NOTREACHED();
1055   return std::string();
1056 }
1057
1058 pp::URLLoader OutOfProcessInstance::CreateURLLoader() {
1059   if (full_) {
1060     if (!did_call_start_loading_) {
1061       did_call_start_loading_ = true;
1062       pp::PDF::DidStartLoading(this);
1063     }
1064
1065     // Disable save and print until the document is fully loaded, since they
1066     // would generate an incomplete document.  Need to do this each time we
1067     // call DidStartLoading since that resets the content restrictions.
1068     pp::PDF::SetContentRestriction(this, CONTENT_RESTRICTION_SAVE |
1069                                    CONTENT_RESTRICTION_PRINT);
1070   }
1071
1072   return CreateURLLoaderInternal();
1073 }
1074
1075 void OutOfProcessInstance::ScheduleCallback(int id, int delay_in_ms) {
1076   pp::CompletionCallback callback =
1077       timer_factory_.NewCallback(&OutOfProcessInstance::OnClientTimerFired);
1078   pp::Module::Get()->core()->CallOnMainThread(delay_in_ms, callback, id);
1079 }
1080
1081 void OutOfProcessInstance::SearchString(const base::char16* string,
1082                             const base::char16* term,
1083                             bool case_sensitive,
1084                             std::vector<SearchStringResult>* results) {
1085   PP_PrivateFindResult* pp_results;
1086   int count = 0;
1087   pp::PDF::SearchString(
1088       this,
1089       reinterpret_cast<const unsigned short*>(string),
1090       reinterpret_cast<const unsigned short*>(term),
1091       case_sensitive,
1092       &pp_results,
1093       &count);
1094
1095   results->resize(count);
1096   for (int i = 0; i < count; ++i) {
1097     (*results)[i].start_index = pp_results[i].start_index;
1098     (*results)[i].length = pp_results[i].length;
1099   }
1100
1101   pp::Memory_Dev memory;
1102   memory.MemFree(pp_results);
1103 }
1104
1105 void OutOfProcessInstance::DocumentPaintOccurred() {
1106 }
1107
1108 void OutOfProcessInstance::DocumentLoadComplete(int page_count) {
1109   // Clear focus state for OSK.
1110   FormTextFieldFocusChange(false);
1111
1112   DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1113   document_load_state_ = LOAD_STATE_COMPLETE;
1114   UserMetricsRecordAction("PDF.LoadSuccess");
1115
1116   // Note: If we are in print preview mode the scroll location is retained
1117   // across document loads so we don't want to scroll again and override it.
1118   if (IsPrintPreview()) {
1119     AppendBlankPrintPreviewPages();
1120     OnGeometryChanged(0, 0);
1121   }
1122
1123   pp::VarDictionary bookmarks_message;
1124   bookmarks_message.Set(pp::Var(kType), pp::Var(kJSBookmarksType));
1125   bookmarks_message.Set(pp::Var(kJSBookmarks), engine_->GetBookmarks());
1126   PostMessage(bookmarks_message);
1127
1128   pp::VarDictionary progress_message;
1129   progress_message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
1130   progress_message.Set(pp::Var(kJSProgressPercentage), pp::Var(100));
1131   PostMessage(progress_message);
1132
1133   if (!full_)
1134     return;
1135
1136   if (did_call_start_loading_) {
1137     pp::PDF::DidStopLoading(this);
1138     did_call_start_loading_ = false;
1139   }
1140
1141   int content_restrictions =
1142       CONTENT_RESTRICTION_CUT | CONTENT_RESTRICTION_PASTE;
1143   if (!engine_->HasPermission(PDFEngine::PERMISSION_COPY))
1144     content_restrictions |= CONTENT_RESTRICTION_COPY;
1145
1146   pp::PDF::SetContentRestriction(this, content_restrictions);
1147
1148   uma_.HistogramCustomCounts("PDF.PageCount", page_count,
1149                              1, 1000000, 50);
1150 }
1151
1152 void OutOfProcessInstance::RotateClockwise() {
1153   engine_->RotateClockwise();
1154 }
1155
1156 void OutOfProcessInstance::RotateCounterclockwise() {
1157   engine_->RotateCounterclockwise();
1158 }
1159
1160 void OutOfProcessInstance::PreviewDocumentLoadComplete() {
1161   if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1162       preview_pages_info_.empty()) {
1163     return;
1164   }
1165
1166   preview_document_load_state_ = LOAD_STATE_COMPLETE;
1167
1168   int dest_page_index = preview_pages_info_.front().second;
1169   int src_page_index =
1170       ExtractPrintPreviewPageIndex(preview_pages_info_.front().first);
1171   if (src_page_index > 0 &&  dest_page_index > -1 && preview_engine_.get())
1172     engine_->AppendPage(preview_engine_.get(), dest_page_index);
1173
1174   preview_pages_info_.pop();
1175   // |print_preview_page_count_| is not updated yet. Do not load any
1176   // other preview pages till we get this information.
1177   if (print_preview_page_count_ == 0)
1178     return;
1179
1180   if (preview_pages_info_.size())
1181     LoadAvailablePreviewPage();
1182 }
1183
1184 void OutOfProcessInstance::DocumentLoadFailed() {
1185   DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1186   UserMetricsRecordAction("PDF.LoadFailure");
1187
1188   if (did_call_start_loading_) {
1189     pp::PDF::DidStopLoading(this);
1190     did_call_start_loading_ = false;
1191   }
1192
1193   document_load_state_ = LOAD_STATE_FAILED;
1194   paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1195
1196   // Send a progress value of -1 to indicate a failure.
1197   pp::VarDictionary message;
1198   message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
1199   message.Set(pp::Var(kJSProgressPercentage), pp::Var(-1));
1200   PostMessage(message);
1201 }
1202
1203 void OutOfProcessInstance::PreviewDocumentLoadFailed() {
1204   UserMetricsRecordAction("PDF.PreviewDocumentLoadFailure");
1205   if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1206       preview_pages_info_.empty()) {
1207     return;
1208   }
1209
1210   preview_document_load_state_ = LOAD_STATE_FAILED;
1211   preview_pages_info_.pop();
1212
1213   if (preview_pages_info_.size())
1214     LoadAvailablePreviewPage();
1215 }
1216
1217 pp::Instance* OutOfProcessInstance::GetPluginInstance() {
1218   return this;
1219 }
1220
1221 void OutOfProcessInstance::DocumentHasUnsupportedFeature(
1222     const std::string& feature) {
1223   std::string metric("PDF_Unsupported_");
1224   metric += feature;
1225   if (!unsupported_features_reported_.count(metric)) {
1226     unsupported_features_reported_.insert(metric);
1227     UserMetricsRecordAction(metric);
1228   }
1229
1230   // Since we use an info bar, only do this for full frame plugins..
1231   if (!full_)
1232     return;
1233
1234   if (told_browser_about_unsupported_feature_)
1235     return;
1236   told_browser_about_unsupported_feature_ = true;
1237
1238   pp::PDF::HasUnsupportedFeature(this);
1239 }
1240
1241 void OutOfProcessInstance::DocumentLoadProgress(uint32 available,
1242                                                 uint32 doc_size) {
1243   double progress = 0.0;
1244   if (doc_size == 0) {
1245     // Document size is unknown. Use heuristics.
1246     // We'll make progress logarithmic from 0 to 100M.
1247     static const double kFactor = log(100000000.0) / 100.0;
1248     if (available > 0) {
1249       progress = log(static_cast<double>(available)) / kFactor;
1250       if (progress > 100.0)
1251         progress = 100.0;
1252     }
1253   } else {
1254     progress = 100.0 * static_cast<double>(available) / doc_size;
1255   }
1256
1257   // We send 100% load progress in DocumentLoadComplete.
1258   if (progress >= 100)
1259     return;
1260
1261   // Avoid sending too many progress messages over PostMessage.
1262   if (progress > last_progress_sent_ + 1) {
1263     last_progress_sent_ = progress;
1264     pp::VarDictionary message;
1265     message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
1266     message.Set(pp::Var(kJSProgressPercentage), pp::Var(progress));
1267     PostMessage(message);
1268   }
1269 }
1270
1271 void OutOfProcessInstance::FormTextFieldFocusChange(bool in_focus) {
1272   if (!text_input_.get())
1273     return;
1274   if (in_focus)
1275     text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_TEXT);
1276   else
1277     text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_NONE);
1278 }
1279
1280 void OutOfProcessInstance::ResetRecentlySentFindUpdate(int32_t /* unused */) {
1281   recently_sent_find_update_ = false;
1282 }
1283
1284 void OutOfProcessInstance::OnGeometryChanged(double old_zoom,
1285                                              float old_device_scale) {
1286   if (zoom_ != old_zoom || device_scale_ != old_device_scale)
1287     engine_->ZoomUpdated(zoom_ * device_scale_);
1288
1289   available_area_ = pp::Rect(plugin_size_);
1290   int doc_width = GetDocumentPixelWidth();
1291   if (doc_width < available_area_.width()) {
1292     available_area_.Offset((available_area_.width() - doc_width) / 2, 0);
1293     available_area_.set_width(doc_width);
1294   }
1295   int doc_height = GetDocumentPixelHeight();
1296   if (doc_height < available_area_.height()) {
1297     available_area_.set_height(doc_height);
1298   }
1299
1300   CalculateBackgroundParts();
1301   engine_->PageOffsetUpdated(available_area_.point());
1302   engine_->PluginSizeUpdated(available_area_.size());
1303
1304   if (!document_size_.GetArea())
1305     return;
1306   paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1307 }
1308
1309 void OutOfProcessInstance::LoadUrl(const std::string& url) {
1310   LoadUrlInternal(url, &embed_loader_, &OutOfProcessInstance::DidOpen);
1311 }
1312
1313 void OutOfProcessInstance::LoadPreviewUrl(const std::string& url) {
1314   LoadUrlInternal(url, &embed_preview_loader_,
1315                   &OutOfProcessInstance::DidOpenPreview);
1316 }
1317
1318 void OutOfProcessInstance::LoadUrlInternal(
1319     const std::string& url,
1320     pp::URLLoader* loader,
1321     void (OutOfProcessInstance::* method)(int32_t)) {
1322   pp::URLRequestInfo request(this);
1323   request.SetURL(url);
1324   request.SetMethod("GET");
1325
1326   *loader = CreateURLLoaderInternal();
1327   pp::CompletionCallback callback = loader_factory_.NewCallback(method);
1328   int rv = loader->Open(request, callback);
1329   if (rv != PP_OK_COMPLETIONPENDING)
1330     callback.Run(rv);
1331 }
1332
1333 pp::URLLoader OutOfProcessInstance::CreateURLLoaderInternal() {
1334   pp::URLLoader loader(this);
1335
1336   const PPB_URLLoaderTrusted* trusted_interface =
1337       reinterpret_cast<const PPB_URLLoaderTrusted*>(
1338           pp::Module::Get()->GetBrowserInterface(
1339               PPB_URLLOADERTRUSTED_INTERFACE));
1340   if (trusted_interface)
1341     trusted_interface->GrantUniversalAccess(loader.pp_resource());
1342   return loader;
1343 }
1344
1345 void OutOfProcessInstance::SetZoom(double scale) {
1346   double old_zoom = zoom_;
1347   zoom_ = scale;
1348   OnGeometryChanged(old_zoom, device_scale_);
1349 }
1350
1351 std::string OutOfProcessInstance::GetLocalizedString(PP_ResourceString id) {
1352   pp::Var rv(pp::PDF::GetLocalizedString(this, id));
1353   if (!rv.is_string())
1354     return std::string();
1355
1356   return rv.AsString();
1357 }
1358
1359 void OutOfProcessInstance::AppendBlankPrintPreviewPages() {
1360   if (print_preview_page_count_ == 0)
1361     return;
1362   engine_->AppendBlankPages(print_preview_page_count_);
1363   if (preview_pages_info_.size() > 0)
1364     LoadAvailablePreviewPage();
1365 }
1366
1367 bool OutOfProcessInstance::IsPrintPreview() {
1368   return IsPrintPreviewUrl(url_);
1369 }
1370
1371 uint32 OutOfProcessInstance::GetBackgroundColor() {
1372   return background_color_;
1373 }
1374
1375 void OutOfProcessInstance::IsSelectingChanged(bool is_selecting) {
1376   pp::VarDictionary message;
1377   message.Set(kType, kJSSetIsSelectingType);
1378   message.Set(kJSIsSelecting, pp::Var(is_selecting));
1379   PostMessage(message);
1380 }
1381
1382 void OutOfProcessInstance::ProcessPreviewPageInfo(const std::string& url,
1383                                                   int dst_page_index) {
1384   if (!IsPrintPreview())
1385     return;
1386
1387   int src_page_index = ExtractPrintPreviewPageIndex(url);
1388   if (src_page_index < 1)
1389     return;
1390
1391   preview_pages_info_.push(std::make_pair(url, dst_page_index));
1392   LoadAvailablePreviewPage();
1393 }
1394
1395 void OutOfProcessInstance::LoadAvailablePreviewPage() {
1396   if (preview_pages_info_.size() <= 0 ||
1397       document_load_state_ != LOAD_STATE_COMPLETE) {
1398     return;
1399   }
1400
1401   std::string url = preview_pages_info_.front().first;
1402   int dst_page_index = preview_pages_info_.front().second;
1403   int src_page_index = ExtractPrintPreviewPageIndex(url);
1404   if (src_page_index < 1 ||
1405       dst_page_index >= print_preview_page_count_ ||
1406       preview_document_load_state_ == LOAD_STATE_LOADING) {
1407     return;
1408   }
1409
1410   preview_document_load_state_ = LOAD_STATE_LOADING;
1411   LoadPreviewUrl(url);
1412 }
1413
1414 void OutOfProcessInstance::UserMetricsRecordAction(
1415     const std::string& action) {
1416   // TODO(raymes): Move this function to PPB_UMA_Private.
1417   pp::PDF::UserMetricsRecordAction(this, pp::Var(action));
1418 }
1419
1420 pp::FloatPoint OutOfProcessInstance::BoundScrollOffsetToDocument(
1421     const pp::FloatPoint& scroll_offset) {
1422   float max_x = document_size_.width() * zoom_ - plugin_dip_size_.width();
1423   float x = std::max(std::min(scroll_offset.x(), max_x), 0.0f);
1424   float max_y = document_size_.height() * zoom_ - plugin_dip_size_.height();
1425   float y = std::max(std::min(scroll_offset.y(), max_y), 0.0f);
1426   return pp::FloatPoint(x, y);
1427 }
1428
1429 }  // namespace chrome_pdf