// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "pdf/out_of_process_instance.h"
#include <algorithm> // for min/max()
#define _USE_MATH_DEFINES // for M_PI
#include <cmath> // for log() and pow()
#include <math.h>
#include <list>
#include "base/json/json_reader.h"
#include "base/json/json_writer.h"
#include "base/logging.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/values.h"
#include "chrome/common/content_restriction.h"
#include "net/base/escape.h"
#include "pdf/pdf.h"
#include "ppapi/c/dev/ppb_cursor_control_dev.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/c/pp_rect.h"
#include "ppapi/c/private/ppb_instance_private.h"
#include "ppapi/c/private/ppp_pdf.h"
#include "ppapi/c/trusted/ppb_url_loader_trusted.h"
#include "ppapi/cpp/core.h"
#include "ppapi/cpp/dev/memory_dev.h"
#include "ppapi/cpp/dev/text_input_dev.h"
#include "ppapi/cpp/dev/url_util_dev.h"
#include "ppapi/cpp/module.h"
#include "ppapi/cpp/point.h"
#include "ppapi/cpp/private/pdf.h"
#include "ppapi/cpp/private/var_private.h"
#include "ppapi/cpp/rect.h"
#include "ppapi/cpp/resource.h"
#include "ppapi/cpp/url_request_info.h"
#include "ppapi/cpp/var_array.h"
#include "ppapi/cpp/var_dictionary.h"
#include "ui/events/keycodes/keyboard_codes.h"
#if defined(OS_MACOSX)
#include "base/mac/mac_util.h"
#endif
namespace chrome_pdf {
const char kChromePrint[] = "chrome://print/";
const char kChromeExtension[] =
"chrome-extension://mhjfbmdgcfjbbpaeojofohoefgiehjai";
// Dictionary Value key names for the document accessibility info
const char kAccessibleNumberOfPages[] = "numberOfPages";
const char kAccessibleLoaded[] = "loaded";
const char kAccessibleCopyable[] = "copyable";
// Constants used in handling postMessage() messages.
const char kType[] = "type";
// Viewport message arguments. (Page -> Plugin).
const char kJSViewportType[] = "viewport";
const char kJSXOffset[] = "xOffset";
const char kJSYOffset[] = "yOffset";
const char kJSZoom[] = "zoom";
// Stop scrolling message (Page -> Plugin)
const char kJSStopScrollingType[] = "stopScrolling";
// Document dimension arguments (Plugin -> Page).
const char kJSDocumentDimensionsType[] = "documentDimensions";
const char kJSDocumentWidth[] = "width";
const char kJSDocumentHeight[] = "height";
const char kJSPageDimensions[] = "pageDimensions";
const char kJSPageX[] = "x";
const char kJSPageY[] = "y";
const char kJSPageWidth[] = "width";
const char kJSPageHeight[] = "height";
// Document load progress arguments (Plugin -> Page)
const char kJSLoadProgressType[] = "loadProgress";
const char kJSProgressPercentage[] = "progress";
// Get password arguments (Plugin -> Page)
const char kJSGetPasswordType[] = "getPassword";
// Get password complete arguments (Page -> Plugin)
const char kJSGetPasswordCompleteType[] = "getPasswordComplete";
const char kJSPassword[] = "password";
// Print (Page -> Plugin)
const char kJSPrintType[] = "print";
// Go to page (Plugin -> Page)
const char kJSGoToPageType[] = "goToPage";
const char kJSPageNumber[] = "page";
// Reset print preview mode (Page -> Plugin)
const char kJSResetPrintPreviewModeType[] = "resetPrintPreviewMode";
const char kJSPrintPreviewUrl[] = "url";
const char kJSPrintPreviewGrayscale[] = "grayscale";
const char kJSPrintPreviewPageCount[] = "pageCount";
// Load preview page (Page -> Plugin)
const char kJSLoadPreviewPageType[] = "loadPreviewPage";
const char kJSPreviewPageUrl[] = "url";
const char kJSPreviewPageIndex[] = "index";
// Set scroll position (Plugin -> Page)
const char kJSSetScrollPositionType[] = "setScrollPosition";
const char kJSPositionX[] = "x";
const char kJSPositionY[] = "y";
// Set translated strings (Plugin -> Page)
const char kJSSetTranslatedStringsType[] = "setTranslatedStrings";
const char kJSGetPasswordString[] = "getPasswordString";
const char kJSLoadingString[] = "loadingString";
const char kJSLoadFailedString[] = "loadFailedString";
// Request accessibility JSON data (Page -> Plugin)
const char kJSGetAccessibilityJSONType[] = "getAccessibilityJSON";
const char kJSAccessibilityPageNumber[] = "page";
// Reply with accessibility JSON data (Plugin -> Page)
const char kJSGetAccessibilityJSONReplyType[] = "getAccessibilityJSONReply";
const char kJSAccessibilityJSON[] = "json";
// Cancel the stream URL request (Plugin -> Page)
const char kJSCancelStreamUrlType[] = "cancelStreamUrl";
// Navigate to the given URL (Plugin -> Page)
const char kJSNavigateType[] = "navigate";
const char kJSNavigateUrl[] = "url";
const char kJSNavigateNewTab[] = "newTab";
// Open the email editor with the given parameters (Plugin -> Page)
const char kJSEmailType[] = "email";
const char kJSEmailTo[] = "to";
const char kJSEmailCc[] = "cc";
const char kJSEmailBcc[] = "bcc";
const char kJSEmailSubject[] = "subject";
const char kJSEmailBody[] = "body";
// Rotation (Page -> Plugin)
const char kJSRotateClockwiseType[] = "rotateClockwise";
const char kJSRotateCounterclockwiseType[] = "rotateCounterclockwise";
const int kFindResultCooldownMs = 100;
const double kMinZoom = 0.01;
namespace {
static const char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1;
PP_Var GetLinkAtPosition(PP_Instance instance, PP_Point point) {
pp::Var var;
void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
if (object) {
var = static_cast<OutOfProcessInstance*>(object)->GetLinkAtPosition(
pp::Point(point));
}
return var.Detach();
}
void Transform(PP_Instance instance, PP_PrivatePageTransformType type) {
void* object =
pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
if (object) {
OutOfProcessInstance* obj_instance =
static_cast<OutOfProcessInstance*>(object);
switch (type) {
case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CW:
obj_instance->RotateClockwise();
break;
case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CCW:
obj_instance->RotateCounterclockwise();
break;
}
}
}
const PPP_Pdf ppp_private = {
&GetLinkAtPosition,
&Transform
};
int ExtractPrintPreviewPageIndex(const std::string& src_url) {
// Sample |src_url| format: chrome://print/id/page_index/print.pdf
std::vector<std::string> url_substr;
base::SplitString(src_url.substr(strlen(kChromePrint)), '/', &url_substr);
if (url_substr.size() != 3)
return -1;
if (url_substr[2] != "print.pdf")
return -1;
int page_index = 0;
if (!base::StringToInt(url_substr[1], &page_index))
return -1;
return page_index;
}
bool IsPrintPreviewUrl(const std::string& url) {
return url.substr(0, strlen(kChromePrint)) == kChromePrint;
}
void ScalePoint(float scale, pp::Point* point) {
point->set_x(static_cast<int>(point->x() * scale));
point->set_y(static_cast<int>(point->y() * scale));
}
void ScaleRect(float scale, pp::Rect* rect) {
int left = static_cast<int>(floorf(rect->x() * scale));
int top = static_cast<int>(floorf(rect->y() * scale));
int right = static_cast<int>(ceilf((rect->x() + rect->width()) * scale));
int bottom = static_cast<int>(ceilf((rect->y() + rect->height()) * scale));
rect->SetRect(left, top, right - left, bottom - top);
}
// TODO(raymes): Remove this dependency on VarPrivate/InstancePrivate. It's
// needed right now to do a synchronous call to JavaScript, but we could easily
// replace this with a custom PPB_PDF function.
pp::Var ModalDialog(const pp::Instance* instance,
const std::string& type,
const std::string& message,
const std::string& default_answer) {
const PPB_Instance_Private* interface =
reinterpret_cast<const PPB_Instance_Private*>(
pp::Module::Get()->GetBrowserInterface(
PPB_INSTANCE_PRIVATE_INTERFACE));
pp::VarPrivate window(pp::PASS_REF,
interface->GetWindowObject(instance->pp_instance()));
if (default_answer.empty())
return window.Call(type, message);
else
return window.Call(type, message, default_answer);
}
} // namespace
OutOfProcessInstance::OutOfProcessInstance(PP_Instance instance)
: pp::Instance(instance),
pp::Find_Private(this),
pp::Printing_Dev(this),
pp::Selection_Dev(this),
cursor_(PP_CURSORTYPE_POINTER),
zoom_(1.0),
device_scale_(1.0),
printing_enabled_(true),
full_(false),
paint_manager_(this, this, true),
first_paint_(true),
document_load_state_(LOAD_STATE_LOADING),
preview_document_load_state_(LOAD_STATE_COMPLETE),
uma_(this),
told_browser_about_unsupported_feature_(false),
print_preview_page_count_(0),
last_progress_sent_(0),
recently_sent_find_update_(false),
received_viewport_message_(false),
did_call_start_loading_(false),
stop_scrolling_(false) {
loader_factory_.Initialize(this);
timer_factory_.Initialize(this);
form_factory_.Initialize(this);
print_callback_factory_.Initialize(this);
engine_.reset(PDFEngine::Create(this));
pp::Module::Get()->AddPluginInterface(kPPPPdfInterface, &ppp_private);
AddPerInstanceObject(kPPPPdfInterface, this);
RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_MOUSE);
RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_KEYBOARD);
RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_TOUCH);
}
OutOfProcessInstance::~OutOfProcessInstance() {
RemovePerInstanceObject(kPPPPdfInterface, this);
}
bool OutOfProcessInstance::Init(uint32_t argc,
const char* argn[],
const char* argv[]) {
// Check if the PDF is being loaded in the PDF chrome extension. We only allow
// the plugin to be put into "full frame" mode when it is being loaded in the
// extension because this enables some features that we don't want pages
// abusing outside of the extension.
pp::Var document_url_var = pp::URLUtil_Dev::Get()->GetDocumentURL(this);
std::string document_url = document_url_var.is_string() ?
document_url_var.AsString() : std::string();
std::string extension_url = std::string(kChromeExtension);
bool in_extension =
!document_url.compare(0, extension_url.size(), extension_url);
if (in_extension) {
// Check if the plugin is full frame. This is passed in from JS.
for (uint32_t i = 0; i < argc; ++i) {
if (strcmp(argn[i], "full-frame") == 0) {
full_ = true;
break;
}
}
}
// Only allow the plugin to handle find requests if it is full frame.
if (full_)
SetPluginToHandleFindRequests();
// Send translated strings to the extension where they will be displayed.
// TODO(raymes): It would be better to get these in the extension directly
// through an API but no such API currently exists.
pp::VarDictionary translated_strings;
translated_strings.Set(kType, kJSSetTranslatedStringsType);
translated_strings.Set(kJSGetPasswordString,
GetLocalizedString(PP_RESOURCESTRING_PDFGETPASSWORD));
translated_strings.Set(kJSLoadingString,
GetLocalizedString(PP_RESOURCESTRING_PDFLOADING));
translated_strings.Set(kJSLoadFailedString,
GetLocalizedString(PP_RESOURCESTRING_PDFLOAD_FAILED));
PostMessage(translated_strings);
text_input_.reset(new pp::TextInput_Dev(this));
const char* stream_url = NULL;
const char* original_url = NULL;
const char* headers = NULL;
for (uint32_t i = 0; i < argc; ++i) {
if (strcmp(argn[i], "src") == 0)
original_url = argv[i];
else if (strcmp(argn[i], "stream-url") == 0)
stream_url = argv[i];
else if (strcmp(argn[i], "headers") == 0)
headers = argv[i];
}
// TODO(raymes): This is a hack to ensure that if no headers are passed in
// then we get the right MIME type. When the in process plugin is removed we
// can fix the document loader properly and remove this hack.
if (!headers || strcmp(headers, "") == 0)
headers = "content-type: application/pdf";
if (!original_url)
return false;
if (!stream_url)
stream_url = original_url;
// If we're in print preview mode we don't need to load the document yet.
// A |kJSResetPrintPreviewModeType| message will be sent to the plugin letting
// it know the url to load. By not loading here we avoid loading the same
// document twice.
if (IsPrintPreviewUrl(original_url))
return true;
LoadUrl(stream_url);
url_ = original_url;
return engine_->New(original_url, headers);
}
void OutOfProcessInstance::HandleMessage(const pp::Var& message) {
pp::VarDictionary dict(message);
if (!dict.Get(kType).is_string()) {
NOTREACHED();
return;
}
std::string type = dict.Get(kType).AsString();
if (type == kJSViewportType &&
dict.Get(pp::Var(kJSXOffset)).is_int() &&
dict.Get(pp::Var(kJSYOffset)).is_int() &&
dict.Get(pp::Var(kJSZoom)).is_number()) {
received_viewport_message_ = true;
stop_scrolling_ = false;
double zoom = dict.Get(pp::Var(kJSZoom)).AsDouble();
pp::Point scroll_offset(dict.Get(pp::Var(kJSXOffset)).AsInt(),
dict.Get(pp::Var(kJSYOffset)).AsInt());
// Bound the input parameters.
zoom = std::max(kMinZoom, zoom);
SetZoom(zoom);
scroll_offset = BoundScrollOffsetToDocument(scroll_offset);
engine_->ScrolledToXPosition(scroll_offset.x() * device_scale_);
engine_->ScrolledToYPosition(scroll_offset.y() * device_scale_);
} else if (type == kJSGetPasswordCompleteType &&
dict.Get(pp::Var(kJSPassword)).is_string()) {
if (password_callback_) {
pp::CompletionCallbackWithOutput<pp::Var> callback = *password_callback_;
password_callback_.reset();
*callback.output() = dict.Get(pp::Var(kJSPassword)).pp_var();
callback.Run(PP_OK);
} else {
NOTREACHED();
}
} else if (type == kJSPrintType) {
Print();
} else if (type == kJSRotateClockwiseType) {
RotateClockwise();
} else if (type == kJSRotateCounterclockwiseType) {
RotateCounterclockwise();
} else if (type == kJSResetPrintPreviewModeType &&
dict.Get(pp::Var(kJSPrintPreviewUrl)).is_string() &&
dict.Get(pp::Var(kJSPrintPreviewGrayscale)).is_bool() &&
dict.Get(pp::Var(kJSPrintPreviewPageCount)).is_int()) {
url_ = dict.Get(pp::Var(kJSPrintPreviewUrl)).AsString();
preview_pages_info_ = std::queue<PreviewPageInfo>();
preview_document_load_state_ = LOAD_STATE_COMPLETE;
document_load_state_ = LOAD_STATE_LOADING;
LoadUrl(url_);
preview_engine_.reset();
engine_.reset(PDFEngine::Create(this));
engine_->SetGrayscale(dict.Get(pp::Var(kJSPrintPreviewGrayscale)).AsBool());
engine_->New(url_.c_str());
print_preview_page_count_ =
std::max(dict.Get(pp::Var(kJSPrintPreviewPageCount)).AsInt(), 0);
paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
} else if (type == kJSLoadPreviewPageType &&
dict.Get(pp::Var(kJSPreviewPageUrl)).is_string() &&
dict.Get(pp::Var(kJSPreviewPageIndex)).is_int()) {
ProcessPreviewPageInfo(dict.Get(pp::Var(kJSPreviewPageUrl)).AsString(),
dict.Get(pp::Var(kJSPreviewPageIndex)).AsInt());
} else if (type == kJSGetAccessibilityJSONType) {
pp::VarDictionary reply;
reply.Set(pp::Var(kType), pp::Var(kJSGetAccessibilityJSONReplyType));
if (dict.Get(pp::Var(kJSAccessibilityPageNumber)).is_int()) {
int page = dict.Get(pp::Var(kJSAccessibilityPageNumber)).AsInt();
reply.Set(pp::Var(kJSAccessibilityJSON),
pp::Var(engine_->GetPageAsJSON(page)));
} else {
base::DictionaryValue node;
node.SetInteger(kAccessibleNumberOfPages, engine_->GetNumberOfPages());
node.SetBoolean(kAccessibleLoaded,
document_load_state_ != LOAD_STATE_LOADING);
bool has_permissions =
engine_->HasPermission(PDFEngine::PERMISSION_COPY) ||
engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE);
node.SetBoolean(kAccessibleCopyable, has_permissions);
std::string json;
base::JSONWriter::Write(&node, &json);
reply.Set(pp::Var(kJSAccessibilityJSON), pp::Var(json));
}
PostMessage(reply);
} else if (type == kJSStopScrollingType) {
stop_scrolling_ = true;
} else {
NOTREACHED();
}
}
bool OutOfProcessInstance::HandleInputEvent(
const pp::InputEvent& event) {
// To simplify things, convert the event into device coordinates if it is
// a mouse event.
pp::InputEvent event_device_res(event);
{
pp::MouseInputEvent mouse_event(event);
if (!mouse_event.is_null()) {
pp::Point point = mouse_event.GetPosition();
pp::Point movement = mouse_event.GetMovement();
ScalePoint(device_scale_, &point);
ScalePoint(device_scale_, &movement);
mouse_event = pp::MouseInputEvent(
this,
event.GetType(),
event.GetTimeStamp(),
event.GetModifiers(),
mouse_event.GetButton(),
point,
mouse_event.GetClickCount(),
movement);
event_device_res = mouse_event;
}
}
pp::InputEvent offset_event(event_device_res);
switch (offset_event.GetType()) {
case PP_INPUTEVENT_TYPE_MOUSEDOWN:
case PP_INPUTEVENT_TYPE_MOUSEUP:
case PP_INPUTEVENT_TYPE_MOUSEMOVE:
case PP_INPUTEVENT_TYPE_MOUSEENTER:
case PP_INPUTEVENT_TYPE_MOUSELEAVE: {
pp::MouseInputEvent mouse_event(event_device_res);
pp::MouseInputEvent mouse_event_dip(event);
pp::Point point = mouse_event.GetPosition();
point.set_x(point.x() - available_area_.x());
offset_event = pp::MouseInputEvent(
this,
event.GetType(),
event.GetTimeStamp(),
event.GetModifiers(),
mouse_event.GetButton(),
point,
mouse_event.GetClickCount(),
mouse_event.GetMovement());
break;
}
default:
break;
}
if (engine_->HandleEvent(offset_event))
return true;
// TODO(raymes): Implement this scroll behavior in JS:
// When click+dragging, scroll the document correctly.
if (event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN &&
event.GetModifiers() & kDefaultKeyModifier) {
pp::KeyboardInputEvent keyboard_event(event);
switch (keyboard_event.GetKeyCode()) {
case 'A':
engine_->SelectAll();
return true;
}
}
// Return true for unhandled clicks so the plugin takes focus.
return (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN);
}
void OutOfProcessInstance::DidChangeView(const pp::View& view) {
pp::Rect view_rect(view.GetRect());
float old_device_scale = device_scale_;
float device_scale = view.GetDeviceScale();
pp::Size view_device_size(view_rect.width() * device_scale,
view_rect.height() * device_scale);
if (view_device_size != plugin_size_ || device_scale != device_scale_) {
device_scale_ = device_scale;
plugin_dip_size_ = view_rect.size();
plugin_size_ = view_device_size;
paint_manager_.SetSize(view_device_size, device_scale_);
pp::Size new_image_data_size = PaintManager::GetNewContextSize(
image_data_.size(),
plugin_size_);
if (new_image_data_size != image_data_.size()) {
image_data_ = pp::ImageData(this,
PP_IMAGEDATAFORMAT_BGRA_PREMUL,
new_image_data_size,
false);
first_paint_ = true;
}
if (image_data_.is_null()) {
DCHECK(plugin_size_.IsEmpty());
return;
}
OnGeometryChanged(zoom_, old_device_scale);
}
if (!stop_scrolling_) {
pp::Point scroll_offset(
BoundScrollOffsetToDocument(view.GetScrollOffset()));
engine_->ScrolledToXPosition(scroll_offset.x() * device_scale_);
engine_->ScrolledToYPosition(scroll_offset.y() * device_scale_);
}
}
pp::Var OutOfProcessInstance::GetLinkAtPosition(
const pp::Point& point) {
pp::Point offset_point(point);
ScalePoint(device_scale_, &offset_point);
offset_point.set_x(offset_point.x() - available_area_.x());
return engine_->GetLinkAtPosition(offset_point);
}
pp::Var OutOfProcessInstance::GetSelectedText(bool html) {
if (html || !engine_->HasPermission(PDFEngine::PERMISSION_COPY))
return pp::Var();
return engine_->GetSelectedText();
}
uint32_t OutOfProcessInstance::QuerySupportedPrintOutputFormats() {
return engine_->QuerySupportedPrintOutputFormats();
}
int32_t OutOfProcessInstance::PrintBegin(
const PP_PrintSettings_Dev& print_settings) {
// For us num_pages is always equal to the number of pages in the PDF
// document irrespective of the printable area.
int32_t ret = engine_->GetNumberOfPages();
if (!ret)
return 0;
uint32_t supported_formats = engine_->QuerySupportedPrintOutputFormats();
if ((print_settings.format & supported_formats) == 0)
return 0;
print_settings_.is_printing = true;
print_settings_.pepper_print_settings = print_settings;
engine_->PrintBegin();
return ret;
}
pp::Resource OutOfProcessInstance::PrintPages(
const PP_PrintPageNumberRange_Dev* page_ranges,
uint32_t page_range_count) {
if (!print_settings_.is_printing)
return pp::Resource();
print_settings_.print_pages_called_ = true;
return engine_->PrintPages(page_ranges, page_range_count,
print_settings_.pepper_print_settings);
}
void OutOfProcessInstance::PrintEnd() {
if (print_settings_.print_pages_called_)
UserMetricsRecordAction("PDF.PrintPage");
print_settings_.Clear();
engine_->PrintEnd();
}
bool OutOfProcessInstance::IsPrintScalingDisabled() {
return !engine_->GetPrintScaling();
}
bool OutOfProcessInstance::StartFind(const std::string& text,
bool case_sensitive) {
engine_->StartFind(text.c_str(), case_sensitive);
return true;
}
void OutOfProcessInstance::SelectFindResult(bool forward) {
engine_->SelectFindResult(forward);
}
void OutOfProcessInstance::StopFind() {
engine_->StopFind();
tickmarks_.clear();
SetTickmarks(tickmarks_);
}
void OutOfProcessInstance::OnPaint(
const std::vector<pp::Rect>& paint_rects,
std::vector<PaintManager::ReadyRect>* ready,
std::vector<pp::Rect>* pending) {
if (image_data_.is_null()) {
DCHECK(plugin_size_.IsEmpty());
return;
}
if (first_paint_) {
first_paint_ = false;
pp::Rect rect = pp::Rect(pp::Point(), image_data_.size());
FillRect(rect, kBackgroundColor);
ready->push_back(PaintManager::ReadyRect(rect, image_data_, true));
}
if (!received_viewport_message_)
return;
engine_->PrePaint();
for (size_t i = 0; i < paint_rects.size(); i++) {
// Intersect with plugin area since there could be pending invalidates from
// when the plugin area was larger.
pp::Rect rect =
paint_rects[i].Intersect(pp::Rect(pp::Point(), plugin_size_));
if (rect.IsEmpty())
continue;
pp::Rect pdf_rect = available_area_.Intersect(rect);
if (!pdf_rect.IsEmpty()) {
pdf_rect.Offset(available_area_.x() * -1, 0);
std::vector<pp::Rect> pdf_ready;
std::vector<pp::Rect> pdf_pending;
engine_->Paint(pdf_rect, &image_data_, &pdf_ready, &pdf_pending);
for (size_t j = 0; j < pdf_ready.size(); ++j) {
pdf_ready[j].Offset(available_area_.point());
ready->push_back(
PaintManager::ReadyRect(pdf_ready[j], image_data_, false));
}
for (size_t j = 0; j < pdf_pending.size(); ++j) {
pdf_pending[j].Offset(available_area_.point());
pending->push_back(pdf_pending[j]);
}
}
for (size_t j = 0; j < background_parts_.size(); ++j) {
pp::Rect intersection = background_parts_[j].location.Intersect(rect);
if (!intersection.IsEmpty()) {
FillRect(intersection, background_parts_[j].color);
ready->push_back(
PaintManager::ReadyRect(intersection, image_data_, false));
}
}
}
engine_->PostPaint();
}
void OutOfProcessInstance::DidOpen(int32_t result) {
if (result == PP_OK) {
if (!engine_->HandleDocumentLoad(embed_loader_)) {
document_load_state_ = LOAD_STATE_LOADING;
DocumentLoadFailed();
}
} else if (result != PP_ERROR_ABORTED) { // Can happen in tests.
NOTREACHED();
DocumentLoadFailed();
}
// If it's a progressive load, cancel the stream URL request so that requests
// can be made on the original URL.
// TODO(raymes): Make this clearer once the in-process plugin is deleted.
if (engine_->IsProgressiveLoad()) {
pp::VarDictionary message;
message.Set(kType, kJSCancelStreamUrlType);
PostMessage(message);
}
}
void OutOfProcessInstance::DidOpenPreview(int32_t result) {
if (result == PP_OK) {
preview_engine_.reset(PDFEngine::Create(new PreviewModeClient(this)));
preview_engine_->HandleDocumentLoad(embed_preview_loader_);
} else {
NOTREACHED();
}
}
void OutOfProcessInstance::OnClientTimerFired(int32_t id) {
engine_->OnCallback(id);
}
void OutOfProcessInstance::CalculateBackgroundParts() {
background_parts_.clear();
int left_width = available_area_.x();
int right_start = available_area_.right();
int right_width = abs(plugin_size_.width() - available_area_.right());
int bottom = std::min(available_area_.bottom(), plugin_size_.height());
// Add the left, right, and bottom rectangles. Note: we assume only
// horizontal centering.
BackgroundPart part = {
pp::Rect(0, 0, left_width, bottom),
kBackgroundColor
};
if (!part.location.IsEmpty())
background_parts_.push_back(part);
part.location = pp::Rect(right_start, 0, right_width, bottom);
if (!part.location.IsEmpty())
background_parts_.push_back(part);
part.location = pp::Rect(
0, bottom, plugin_size_.width(), plugin_size_.height() - bottom);
if (!part.location.IsEmpty())
background_parts_.push_back(part);
}
int OutOfProcessInstance::GetDocumentPixelWidth() const {
return static_cast<int>(ceil(document_size_.width() * zoom_ * device_scale_));
}
int OutOfProcessInstance::GetDocumentPixelHeight() const {
return static_cast<int>(
ceil(document_size_.height() * zoom_ * device_scale_));
}
void OutOfProcessInstance::FillRect(const pp::Rect& rect, uint32 color) {
DCHECK(!image_data_.is_null() || rect.IsEmpty());
uint32* buffer_start = static_cast<uint32*>(image_data_.data());
int stride = image_data_.stride();
uint32* ptr = buffer_start + rect.y() * stride / 4 + rect.x();
int height = rect.height();
int width = rect.width();
for (int y = 0; y < height; ++y) {
for (int x = 0; x < width; ++x)
*(ptr + x) = color;
ptr += stride /4;
}
}
void OutOfProcessInstance::DocumentSizeUpdated(const pp::Size& size) {
document_size_ = size;
pp::VarDictionary dimensions;
dimensions.Set(kType, kJSDocumentDimensionsType);
dimensions.Set(kJSDocumentWidth, pp::Var(document_size_.width()));
dimensions.Set(kJSDocumentHeight, pp::Var(document_size_.height()));
pp::VarArray page_dimensions_array;
int num_pages = engine_->GetNumberOfPages();
for (int i = 0; i < num_pages; ++i) {
pp::Rect page_rect = engine_->GetPageRect(i);
pp::VarDictionary page_dimensions;
page_dimensions.Set(kJSPageX, pp::Var(page_rect.x()));
page_dimensions.Set(kJSPageY, pp::Var(page_rect.y()));
page_dimensions.Set(kJSPageWidth, pp::Var(page_rect.width()));
page_dimensions.Set(kJSPageHeight, pp::Var(page_rect.height()));
page_dimensions_array.Set(i, page_dimensions);
}
dimensions.Set(kJSPageDimensions, page_dimensions_array);
PostMessage(dimensions);
OnGeometryChanged(zoom_, device_scale_);
}
void OutOfProcessInstance::Invalidate(const pp::Rect& rect) {
pp::Rect offset_rect(rect);
offset_rect.Offset(available_area_.point());
paint_manager_.InvalidateRect(offset_rect);
}
void OutOfProcessInstance::Scroll(const pp::Point& point) {
if (!image_data_.is_null())
paint_manager_.ScrollRect(available_area_, point);
}
void OutOfProcessInstance::ScrollToX(int x) {
pp::VarDictionary position;
position.Set(kType, kJSSetScrollPositionType);
position.Set(kJSPositionX, pp::Var(x / device_scale_));
PostMessage(position);
}
void OutOfProcessInstance::ScrollToY(int y) {
pp::VarDictionary position;
position.Set(kType, kJSSetScrollPositionType);
position.Set(kJSPositionY, pp::Var(y / device_scale_));
PostMessage(position);
}
void OutOfProcessInstance::ScrollToPage(int page) {
if (engine_->GetNumberOfPages() == 0)
return;
pp::VarDictionary message;
message.Set(kType, kJSGoToPageType);
message.Set(kJSPageNumber, pp::Var(page));
PostMessage(message);
}
void OutOfProcessInstance::NavigateTo(const std::string& url,
bool open_in_new_tab) {
std::string url_copy(url);
// Empty |url_copy| is ok, and will effectively be a reload.
// Skip the code below so an empty URL does not turn into "http://", which
// will cause GURL to fail a DCHECK.
if (!url_copy.empty()) {
// If |url_copy| starts with '#', then it's for the same URL with a
// different URL fragment.
if (url_copy[0] == '#') {
url_copy = url_ + url_copy;
}
// If there's no scheme, add http.
if (url_copy.find("://") == std::string::npos &&
url_copy.find("mailto:") == std::string::npos) {
url_copy = std::string("http://") + url_copy;
}
// Make sure |url_copy| starts with a valid scheme.
if (url_copy.find("http://") != 0 &&
url_copy.find("https://") != 0 &&
url_copy.find("ftp://") != 0 &&
url_copy.find("file://") != 0 &&
url_copy.find("mailto:") != 0) {
return;
}
// Make sure |url_copy| is not only a scheme.
if (url_copy == "http://" ||
url_copy == "https://" ||
url_copy == "ftp://" ||
url_copy == "file://" ||
url_copy == "mailto:") {
return;
}
}
pp::VarDictionary message;
message.Set(kType, kJSNavigateType);
message.Set(kJSNavigateUrl, url_copy);
message.Set(kJSNavigateNewTab, open_in_new_tab);
PostMessage(message);
}
void OutOfProcessInstance::UpdateCursor(PP_CursorType_Dev cursor) {
if (cursor == cursor_)
return;
cursor_ = cursor;
const PPB_CursorControl_Dev* cursor_interface =
reinterpret_cast<const PPB_CursorControl_Dev*>(
pp::Module::Get()->GetBrowserInterface(PPB_CURSOR_CONTROL_DEV_INTERFACE));
if (!cursor_interface) {
NOTREACHED();
return;
}
cursor_interface->SetCursor(
pp_instance(), cursor_, pp::ImageData().pp_resource(), NULL);
}
void OutOfProcessInstance::UpdateTickMarks(
const std::vector<pp::Rect>& tickmarks) {
float inverse_scale = 1.0f / device_scale_;
std::vector<pp::Rect> scaled_tickmarks = tickmarks;
for (size_t i = 0; i < scaled_tickmarks.size(); i++)
ScaleRect(inverse_scale, &scaled_tickmarks[i]);
tickmarks_ = scaled_tickmarks;
}
void OutOfProcessInstance::NotifyNumberOfFindResultsChanged(int total,
bool final_result) {
// We don't want to spam the renderer with too many updates to the number of
// find results. Don't send an update if we sent one too recently. If it's the
// final update, we always send it though.
if (final_result) {
NumberOfFindResultsChanged(total, final_result);
SetTickmarks(tickmarks_);
return;
}
if (recently_sent_find_update_)
return;
NumberOfFindResultsChanged(total, final_result);
SetTickmarks(tickmarks_);
recently_sent_find_update_ = true;
pp::CompletionCallback callback =
timer_factory_.NewCallback(
&OutOfProcessInstance::ResetRecentlySentFindUpdate);
pp::Module::Get()->core()->CallOnMainThread(kFindResultCooldownMs,
callback, 0);
}
void OutOfProcessInstance::NotifySelectedFindResultChanged(
int current_find_index) {
SelectedFindResultChanged(current_find_index);
}
void OutOfProcessInstance::GetDocumentPassword(
pp::CompletionCallbackWithOutput<pp::Var> callback) {
if (password_callback_) {
NOTREACHED();
return;
}
password_callback_.reset(
new pp::CompletionCallbackWithOutput<pp::Var>(callback));
pp::VarDictionary message;
message.Set(pp::Var(kType), pp::Var(kJSGetPasswordType));
PostMessage(message);
}
void OutOfProcessInstance::Alert(const std::string& message) {
ModalDialog(this, "alert", message, std::string());
}
bool OutOfProcessInstance::Confirm(const std::string& message) {
pp::Var result = ModalDialog(this, "confirm", message, std::string());
return result.is_bool() ? result.AsBool() : false;
}
std::string OutOfProcessInstance::Prompt(const std::string& question,
const std::string& default_answer) {
pp::Var result = ModalDialog(this, "prompt", question, default_answer);
return result.is_string() ? result.AsString() : std::string();
}
std::string OutOfProcessInstance::GetURL() {
return url_;
}
void OutOfProcessInstance::Email(const std::string& to,
const std::string& cc,
const std::string& bcc,
const std::string& subject,
const std::string& body) {
pp::VarDictionary message;
message.Set(pp::Var(kType), pp::Var(kJSEmailType));
message.Set(pp::Var(kJSEmailTo),
pp::Var(net::EscapeUrlEncodedData(to, false)));
message.Set(pp::Var(kJSEmailCc),
pp::Var(net::EscapeUrlEncodedData(cc, false)));
message.Set(pp::Var(kJSEmailBcc),
pp::Var(net::EscapeUrlEncodedData(bcc, false)));
message.Set(pp::Var(kJSEmailSubject),
pp::Var(net::EscapeUrlEncodedData(subject, false)));
message.Set(pp::Var(kJSEmailBody),
pp::Var(net::EscapeUrlEncodedData(body, false)));
PostMessage(message);
}
void OutOfProcessInstance::Print() {
if (!printing_enabled_ ||
(!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY))) {
return;
}
pp::CompletionCallback callback =
print_callback_factory_.NewCallback(&OutOfProcessInstance::OnPrint);
pp::Module::Get()->core()->CallOnMainThread(0, callback);
}
void OutOfProcessInstance::OnPrint(int32_t) {
pp::PDF::Print(this);
}
void OutOfProcessInstance::SubmitForm(const std::string& url,
const void* data,
int length) {
pp::URLRequestInfo request(this);
request.SetURL(url);
request.SetMethod("POST");
request.AppendDataToBody(reinterpret_cast<const char*>(data), length);
pp::CompletionCallback callback =
form_factory_.NewCallback(&OutOfProcessInstance::FormDidOpen);
form_loader_ = CreateURLLoaderInternal();
int rv = form_loader_.Open(request, callback);
if (rv != PP_OK_COMPLETIONPENDING)
callback.Run(rv);
}
void OutOfProcessInstance::FormDidOpen(int32_t result) {
// TODO: inform the user of success/failure.
if (result != PP_OK) {
NOTREACHED();
}
}
std::string OutOfProcessInstance::ShowFileSelectionDialog() {
// Seems like very low priority to implement, since the pdf has no way to get
// the file data anyways. Javascript doesn't let you do this synchronously.
NOTREACHED();
return std::string();
}
pp::URLLoader OutOfProcessInstance::CreateURLLoader() {
if (full_) {
if (!did_call_start_loading_) {
did_call_start_loading_ = true;
pp::PDF::DidStartLoading(this);
}
// Disable save and print until the document is fully loaded, since they
// would generate an incomplete document. Need to do this each time we
// call DidStartLoading since that resets the content restrictions.
pp::PDF::SetContentRestriction(this, CONTENT_RESTRICTION_SAVE |
CONTENT_RESTRICTION_PRINT);
}
return CreateURLLoaderInternal();
}
void OutOfProcessInstance::ScheduleCallback(int id, int delay_in_ms) {
pp::CompletionCallback callback =
timer_factory_.NewCallback(&OutOfProcessInstance::OnClientTimerFired);
pp::Module::Get()->core()->CallOnMainThread(delay_in_ms, callback, id);
}
void OutOfProcessInstance::SearchString(const base::char16* string,
const base::char16* term,
bool case_sensitive,
std::vector<SearchStringResult>* results) {
PP_PrivateFindResult* pp_results;
int count = 0;
pp::PDF::SearchString(
this,
reinterpret_cast<const unsigned short*>(string),
reinterpret_cast<const unsigned short*>(term),
case_sensitive,
&pp_results,
&count);
results->resize(count);
for (int i = 0; i < count; ++i) {
(*results)[i].start_index = pp_results[i].start_index;
(*results)[i].length = pp_results[i].length;
}
pp::Memory_Dev memory;
memory.MemFree(pp_results);
}
void OutOfProcessInstance::DocumentPaintOccurred() {
}
void OutOfProcessInstance::DocumentLoadComplete(int page_count) {
// Clear focus state for OSK.
FormTextFieldFocusChange(false);
DCHECK(document_load_state_ == LOAD_STATE_LOADING);
document_load_state_ = LOAD_STATE_COMPLETE;
UserMetricsRecordAction("PDF.LoadSuccess");
// Note: If we are in print preview mode the scroll location is retained
// across document loads so we don't want to scroll again and override it.
if (IsPrintPreview()) {
AppendBlankPrintPreviewPages();
OnGeometryChanged(0, 0);
}
pp::VarDictionary message;
message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
message.Set(pp::Var(kJSProgressPercentage), pp::Var(100)) ;
PostMessage(message);
if (!full_)
return;
if (did_call_start_loading_) {
pp::PDF::DidStopLoading(this);
did_call_start_loading_ = false;
}
int content_restrictions =
CONTENT_RESTRICTION_CUT | CONTENT_RESTRICTION_PASTE;
if (!engine_->HasPermission(PDFEngine::PERMISSION_COPY))
content_restrictions |= CONTENT_RESTRICTION_COPY;
if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) {
printing_enabled_ = false;
}
pp::PDF::SetContentRestriction(this, content_restrictions);
uma_.HistogramCustomCounts("PDF.PageCount", page_count,
1, 1000000, 50);
}
void OutOfProcessInstance::RotateClockwise() {
engine_->RotateClockwise();
}
void OutOfProcessInstance::RotateCounterclockwise() {
engine_->RotateCounterclockwise();
}
void OutOfProcessInstance::PreviewDocumentLoadComplete() {
if (preview_document_load_state_ != LOAD_STATE_LOADING ||
preview_pages_info_.empty()) {
return;
}
preview_document_load_state_ = LOAD_STATE_COMPLETE;
int dest_page_index = preview_pages_info_.front().second;
int src_page_index =
ExtractPrintPreviewPageIndex(preview_pages_info_.front().first);
if (src_page_index > 0 && dest_page_index > -1 && preview_engine_.get())
engine_->AppendPage(preview_engine_.get(), dest_page_index);
preview_pages_info_.pop();
// |print_preview_page_count_| is not updated yet. Do not load any
// other preview pages till we get this information.
if (print_preview_page_count_ == 0)
return;
if (preview_pages_info_.size())
LoadAvailablePreviewPage();
}
void OutOfProcessInstance::DocumentLoadFailed() {
DCHECK(document_load_state_ == LOAD_STATE_LOADING);
UserMetricsRecordAction("PDF.LoadFailure");
if (did_call_start_loading_) {
pp::PDF::DidStopLoading(this);
did_call_start_loading_ = false;
}
document_load_state_ = LOAD_STATE_FAILED;
paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
// Send a progress value of -1 to indicate a failure.
pp::VarDictionary message;
message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
message.Set(pp::Var(kJSProgressPercentage), pp::Var(-1)) ;
PostMessage(message);
}
void OutOfProcessInstance::PreviewDocumentLoadFailed() {
UserMetricsRecordAction("PDF.PreviewDocumentLoadFailure");
if (preview_document_load_state_ != LOAD_STATE_LOADING ||
preview_pages_info_.empty()) {
return;
}
preview_document_load_state_ = LOAD_STATE_FAILED;
preview_pages_info_.pop();
if (preview_pages_info_.size())
LoadAvailablePreviewPage();
}
pp::Instance* OutOfProcessInstance::GetPluginInstance() {
return this;
}
void OutOfProcessInstance::DocumentHasUnsupportedFeature(
const std::string& feature) {
std::string metric("PDF_Unsupported_");
metric += feature;
if (!unsupported_features_reported_.count(metric)) {
unsupported_features_reported_.insert(metric);
UserMetricsRecordAction(metric);
}
// Since we use an info bar, only do this for full frame plugins..
if (!full_)
return;
if (told_browser_about_unsupported_feature_)
return;
told_browser_about_unsupported_feature_ = true;
pp::PDF::HasUnsupportedFeature(this);
}
void OutOfProcessInstance::DocumentLoadProgress(uint32 available,
uint32 doc_size) {
double progress = 0.0;
if (doc_size == 0) {
// Document size is unknown. Use heuristics.
// We'll make progress logarithmic from 0 to 100M.
static const double kFactor = log(100000000.0) / 100.0;
if (available > 0) {
progress = log(static_cast<double>(available)) / kFactor;
if (progress > 100.0)
progress = 100.0;
}
} else {
progress = 100.0 * static_cast<double>(available) / doc_size;
}
// We send 100% load progress in DocumentLoadComplete.
if (progress >= 100)
return;
// Avoid sending too many progress messages over PostMessage.
if (progress > last_progress_sent_ + 1) {
last_progress_sent_ = progress;
pp::VarDictionary message;
message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
message.Set(pp::Var(kJSProgressPercentage), pp::Var(progress)) ;
PostMessage(message);
}
}
void OutOfProcessInstance::FormTextFieldFocusChange(bool in_focus) {
if (!text_input_.get())
return;
if (in_focus)
text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_TEXT);
else
text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_NONE);
}
void OutOfProcessInstance::ResetRecentlySentFindUpdate(int32_t /* unused */) {
recently_sent_find_update_ = false;
}
void OutOfProcessInstance::OnGeometryChanged(double old_zoom,
float old_device_scale) {
if (zoom_ != old_zoom || device_scale_ != old_device_scale)
engine_->ZoomUpdated(zoom_ * device_scale_);
available_area_ = pp::Rect(plugin_size_);
int doc_width = GetDocumentPixelWidth();
if (doc_width < available_area_.width()) {
available_area_.Offset((available_area_.width() - doc_width) / 2, 0);
available_area_.set_width(doc_width);
}
int doc_height = GetDocumentPixelHeight();
if (doc_height < available_area_.height()) {
available_area_.set_height(doc_height);
}
CalculateBackgroundParts();
engine_->PageOffsetUpdated(available_area_.point());
engine_->PluginSizeUpdated(available_area_.size());
if (!document_size_.GetArea())
return;
paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
}
void OutOfProcessInstance::LoadUrl(const std::string& url) {
LoadUrlInternal(url, &embed_loader_, &OutOfProcessInstance::DidOpen);
}
void OutOfProcessInstance::LoadPreviewUrl(const std::string& url) {
LoadUrlInternal(url, &embed_preview_loader_,
&OutOfProcessInstance::DidOpenPreview);
}
void OutOfProcessInstance::LoadUrlInternal(
const std::string& url,
pp::URLLoader* loader,
void (OutOfProcessInstance::* method)(int32_t)) {
pp::URLRequestInfo request(this);
request.SetURL(url);
request.SetMethod("GET");
*loader = CreateURLLoaderInternal();
pp::CompletionCallback callback = loader_factory_.NewCallback(method);
int rv = loader->Open(request, callback);
if (rv != PP_OK_COMPLETIONPENDING)
callback.Run(rv);
}
pp::URLLoader OutOfProcessInstance::CreateURLLoaderInternal() {
pp::URLLoader loader(this);
const PPB_URLLoaderTrusted* trusted_interface =
reinterpret_cast<const PPB_URLLoaderTrusted*>(
pp::Module::Get()->GetBrowserInterface(
PPB_URLLOADERTRUSTED_INTERFACE));
if (trusted_interface)
trusted_interface->GrantUniversalAccess(loader.pp_resource());
return loader;
}
void OutOfProcessInstance::SetZoom(double scale) {
double old_zoom = zoom_;
zoom_ = scale;
OnGeometryChanged(old_zoom, device_scale_);
}
std::string OutOfProcessInstance::GetLocalizedString(PP_ResourceString id) {
pp::Var rv(pp::PDF::GetLocalizedString(this, id));
if (!rv.is_string())
return std::string();
return rv.AsString();
}
void OutOfProcessInstance::AppendBlankPrintPreviewPages() {
if (print_preview_page_count_ == 0)
return;
engine_->AppendBlankPages(print_preview_page_count_);
if (preview_pages_info_.size() > 0)
LoadAvailablePreviewPage();
}
bool OutOfProcessInstance::IsPrintPreview() {
return IsPrintPreviewUrl(url_);
}
void OutOfProcessInstance::ProcessPreviewPageInfo(const std::string& url,
int dst_page_index) {
if (!IsPrintPreview())
return;
int src_page_index = ExtractPrintPreviewPageIndex(url);
if (src_page_index < 1)
return;
preview_pages_info_.push(std::make_pair(url, dst_page_index));
LoadAvailablePreviewPage();
}
void OutOfProcessInstance::LoadAvailablePreviewPage() {
if (preview_pages_info_.size() <= 0 ||
document_load_state_ != LOAD_STATE_COMPLETE) {
return;
}
std::string url = preview_pages_info_.front().first;
int dst_page_index = preview_pages_info_.front().second;
int src_page_index = ExtractPrintPreviewPageIndex(url);
if (src_page_index < 1 ||
dst_page_index >= print_preview_page_count_ ||
preview_document_load_state_ == LOAD_STATE_LOADING) {
return;
}
preview_document_load_state_ = LOAD_STATE_LOADING;
LoadPreviewUrl(url);
}
void OutOfProcessInstance::UserMetricsRecordAction(
const std::string& action) {
// TODO(raymes): Move this function to PPB_UMA_Private.
pp::PDF::UserMetricsRecordAction(this, pp::Var(action));
}
pp::Point OutOfProcessInstance::BoundScrollOffsetToDocument(
const pp::Point& scroll_offset) {
int max_x = document_size_.width() * zoom_ - plugin_dip_size_.width();
int x = std::max(std::min(scroll_offset.x(), max_x), 0);
int max_y = document_size_.height() * zoom_ - plugin_dip_size_.height();
int y = std::max(std::min(scroll_offset.y(), max_y), 0);
return pp::Point(x, y);
}
} // namespace chrome_pdf