pdf/out_of_process_instance.cc

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