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chromium / chromium / src / 66.0.3343.2 / . / pdf / out_of_process_instance.cc
blob: 1bb3729a981708426ea1408f5bf97c18aaec5f90 [file] [log] [blame]
// 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 <stddef.h>
#include <stdint.h>
#include <algorithm> // for min/max()
#include <cmath> // for log() and pow()
#include <list>
#include <memory>
#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/strings/utf_string_conversions.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"
namespace chrome_pdf {
namespace {
const char kChromePrint[] = "chrome://print/";
const char kChromeExtension[] =
"chrome-extension://mhjfbmdgcfjbbpaeojofohoefgiehjai";
// Constants used in handling postMessage() messages.
const char kType[] = "type";
const char kJSId[] = "id";
// Viewport message arguments. (Page -> Plugin).
const char kJSViewportType[] = "viewport";
const char kJSUserInitiated[] = "userInitiated";
const char kJSXOffset[] = "xOffset";
const char kJSYOffset[] = "yOffset";
const char kJSZoom[] = "zoom";
const char kJSPinchPhase[] = "pinchPhase";
// kJSPinchX and kJSPinchY represent the center of the pinch gesture.
const char kJSPinchX[] = "pinchX";
const char kJSPinchY[] = "pinchY";
// kJSPinchVector represents the amount of panning caused by the pinch gesture.
const char kJSPinchVectorX[] = "pinchVectorX";
const char kJSPinchVectorY[] = "pinchVectorY";
// 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";
// Document print preview loaded (Plugin -> Page)
const char kJSPreviewLoadedType[] = "printPreviewLoaded";
// Metadata
const char kJSMetadataType[] = "metadata";
const char kJSBookmarks[] = "bookmarks";
const char kJSTitle[] = "title";
// Get password (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";
// Save (Page -> Plugin)
const char kJSSaveType[] = "save";
// 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";
// 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 kJSNavigateWindowOpenDisposition[] = "disposition";
// 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";
// Select all text in the document (Page -> Plugin)
const char kJSSelectAllType[] = "selectAll";
// Get the selected text in the document (Page -> Plugin)
const char kJSGetSelectedTextType[] = "getSelectedText";
// Reply with selected text (Plugin -> Page)
const char kJSGetSelectedTextReplyType[] = "getSelectedTextReply";
const char kJSSelectedText[] = "selectedText";
// Get the named destination with the given name (Page -> Plugin)
const char kJSGetNamedDestinationType[] = "getNamedDestination";
const char kJSGetNamedDestination[] = "namedDestination";
// Reply with the page number of the named destination (Plugin -> Page)
const char kJSGetNamedDestinationReplyType[] = "getNamedDestinationReply";
const char kJSNamedDestinationPageNumber[] = "pageNumber";
const char kJSTransformPagePointType[] = "transformPagePoint";
const char kJSTransformPagePointReplyType[] = "transformPagePointReply";
// Selecting text in document (Plugin -> Page)
const char kJSSetIsSelectingType[] = "setIsSelecting";
const char kJSIsSelecting[] = "isSelecting";
// Notify when the document was changed and edit mode is toggled.
const char kJSSetIsEditModeType[] = "setIsEditMode";
const char kJSIsEditMode[] = "isEditMode";
// Notify when a form field is focused (Plugin -> Page)
const char kJSFieldFocusType[] = "formFocusChange";
const char kJSFieldFocus[] = "focused";
const int kFindResultCooldownMs = 100;
// Same value as printing::COMPLETE_PREVIEW_DOCUMENT_INDEX.
constexpr int kCompletePDFIndex = -1;
// A different negative value to differentiate itself from |kCompletePDFIndex|.
constexpr int kInvalidPDFIndex = -2;
// A delay to wait between each accessibility page to keep the system
// responsive.
const int kAccessibilityPageDelayMs = 100;
const double kMinZoom = 0.01;
const char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1;
// Used for UMA. Do not delete entries, and keep in sync with histograms.xml.
enum PDFFeatures {
LOADED_DOCUMENT = 0,
HAS_TITLE = 1,
HAS_BOOKMARKS = 2,
FEATURES_COUNT
};
// Used for UMA. Do not delete entries, and keep in sync with histograms.xml
// and pdfium/public/fpdf_annot.h.
const int kAnnotationTypesCount = 28;
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) {
auto* 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;
}
}
}
PP_Bool GetPrintPresetOptionsFromDocument(
PP_Instance instance,
PP_PdfPrintPresetOptions_Dev* options) {
void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
if (object) {
auto* obj_instance = static_cast<OutOfProcessInstance*>(object);
obj_instance->GetPrintPresetOptionsFromDocument(options);
}
return PP_TRUE;
}
void EnableAccessibility(PP_Instance instance) {
void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
if (object) {
auto* obj_instance = static_cast<OutOfProcessInstance*>(object);
obj_instance->EnableAccessibility();
}
}
void SetCaretPosition(PP_Instance instance, const PP_FloatPoint* position) {
void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
if (object) {
auto* obj_instance = static_cast<OutOfProcessInstance*>(object);
obj_instance->SetCaretPosition(*position);
}
}
void MoveRangeSelectionExtent(PP_Instance instance,
const PP_FloatPoint* extent) {
void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
if (object) {
auto* obj_instance = static_cast<OutOfProcessInstance*>(object);
obj_instance->MoveRangeSelectionExtent(*extent);
}
}
void SetSelectionBounds(PP_Instance instance,
const PP_FloatPoint* base,
const PP_FloatPoint* extent) {
void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
if (object) {
auto* obj_instance = static_cast<OutOfProcessInstance*>(object);
obj_instance->SetSelectionBounds(*base, *extent);
}
}
PP_Bool CanEditText(PP_Instance instance) {
void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
if (!object)
return PP_FALSE;
auto* obj_instance = static_cast<OutOfProcessInstance*>(object);
return PP_FromBool(obj_instance->CanEditText());
}
void ReplaceSelection(PP_Instance instance, const char* text) {
void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
if (object) {
auto* obj_instance = static_cast<OutOfProcessInstance*>(object);
obj_instance->ReplaceSelection(text);
}
}
const PPP_Pdf ppp_private = {
&GetLinkAtPosition, &Transform, &GetPrintPresetOptionsFromDocument,
&EnableAccessibility, &SetCaretPosition, &MoveRangeSelectionExtent,
&SetSelectionBounds, &CanEditText, &ReplaceSelection,
};
int ExtractPrintPreviewPageIndex(base::StringPiece src_url) {
// Sample |src_url| format: chrome://print/id/page_index/print.pdf
// The page_index is zero-based, but can be negative with special meanings.
std::vector<base::StringPiece> url_substr =
base::SplitStringPiece(src_url.substr(strlen(kChromePrint)), "/",
base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
if (url_substr.size() != 3)
return kInvalidPDFIndex;
if (url_substr[2] != "print.pdf")
return kInvalidPDFIndex;
int page_index = 0;
if (!base::StringToInt(url_substr[1], &page_index))
return kInvalidPDFIndex;
return page_index;
}
bool IsPrintPreviewUrl(base::StringPiece url) {
return url.starts_with(kChromePrint);
}
bool IsPreviewingPDF(int print_preview_page_count) {
return print_preview_page_count == 0;
}
void ScaleFloatPoint(float scale, pp::FloatPoint* point) {
point->set_x(point->x() * scale);
point->set_y(point->y() * scale);
}
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);
return window.Call(type, message, default_answer);
}
} // namespace
OutOfProcessInstance::OutOfProcessInstance(PP_Instance instance)
: pp::Instance(instance),
pp::Find_Private(this),
pp::Printing_Dev(this),
cursor_(PP_CURSORTYPE_POINTER),
zoom_(1.0),
needs_reraster_(true),
last_bitmap_smaller_(false),
device_scale_(1.0),
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),
font_substitution_reported_(false),
print_preview_page_count_(-1),
print_preview_loaded_page_count_(-1),
last_progress_sent_(0),
recently_sent_find_update_(false),
received_viewport_message_(false),
did_call_start_loading_(false),
stop_scrolling_(false),
background_color_(0),
top_toolbar_height_in_viewport_coords_(0),
accessibility_state_(ACCESSIBILITY_STATE_OFF),
is_print_preview_(false) {
callback_factory_.Initialize(this);
engine_ = 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);
for (size_t i = 0; i < PDFACTION_BUCKET_BOUNDARY; i++)
preview_action_recorded_[i] = false;
}
OutOfProcessInstance::~OutOfProcessInstance() {
RemovePerInstanceObject(kPPPPdfInterface, this);
// Explicitly reset the PDFEngine during destruction as it may call back into
// this object.
engine_.reset();
}
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 loaded in the extension and print preview to avoid
// exposing sensitive APIs directly to external websites.
pp::Var document_url_var = pp::URLUtil_Dev::Get()->GetDocumentURL(this);
if (!document_url_var.is_string())
return false;
std::string document_url = document_url_var.AsString();
base::StringPiece document_url_piece(document_url);
is_print_preview_ = IsPrintPreviewUrl(document_url_piece);
if (!document_url_piece.starts_with(kChromeExtension) && !is_print_preview_)
return false;
// 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;
}
}
// Allow the plugin to handle find requests.
SetPluginToHandleFindRequests();
text_input_ = std::make_unique<pp::TextInput_Dev>(this);
const char* stream_url = nullptr;
const char* original_url = nullptr;
const char* top_level_url = nullptr;
const char* headers = nullptr;
for (uint32_t i = 0; i < argc; ++i) {
bool success = true;
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], "top-level-url") == 0) {
top_level_url = argv[i];
} else if (strcmp(argn[i], "headers") == 0) {
headers = argv[i];
} else if (strcmp(argn[i], "background-color") == 0) {
success = base::HexStringToUInt(argv[i], &background_color_);
} else if (strcmp(argn[i], "top-toolbar-height") == 0) {
success =
base::StringToInt(argv[i], &top_toolbar_height_in_viewport_coords_);
}
if (!success)
return false;
}
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 (IsPrintPreview())
return true;
LoadUrl(stream_url, /*is_print_preview=*/false);
url_ = original_url;
pp::PDF::SetCrashData(GetPluginInstance(), original_url, top_level_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_number() &&
dict.Get(pp::Var(kJSYOffset)).is_number() &&
dict.Get(pp::Var(kJSZoom)).is_number() &&
dict.Get(pp::Var(kJSPinchPhase)).is_number()) {
received_viewport_message_ = true;
stop_scrolling_ = false;
PinchPhase pinch_phase =
static_cast<PinchPhase>(dict.Get(pp::Var(kJSPinchPhase)).AsInt());
double zoom = dict.Get(pp::Var(kJSZoom)).AsDouble();
double zoom_ratio = zoom / zoom_;
pp::FloatPoint scroll_offset(dict.Get(pp::Var(kJSXOffset)).AsDouble(),
dict.Get(pp::Var(kJSYOffset)).AsDouble());
if (pinch_phase == PINCH_START) {
scroll_offset_at_last_raster_ = scroll_offset;
last_bitmap_smaller_ = false;
needs_reraster_ = false;
return;
}
// When zooming in, we set a layer transform to avoid unneeded rerasters.
// Also, if we're zooming out and the last time we rerastered was when
// we were even further zoomed out (i.e. we pinch zoomed in and are now
// pinch zooming back out in the same gesture), we update the layer
// transform instead of rerastering.
if (pinch_phase == PINCH_UPDATE_ZOOM_IN ||
(pinch_phase == PINCH_UPDATE_ZOOM_OUT && zoom_ratio > 1.0)) {
if (!(dict.Get(pp::Var(kJSPinchX)).is_number() &&
dict.Get(pp::Var(kJSPinchY)).is_number() &&
dict.Get(pp::Var(kJSPinchVectorX)).is_number() &&
dict.Get(pp::Var(kJSPinchVectorY)).is_number())) {
NOTREACHED();
return;
}
pp::Point pinch_center(dict.Get(pp::Var(kJSPinchX)).AsDouble(),
dict.Get(pp::Var(kJSPinchY)).AsDouble());
// Pinch vector is the panning caused due to change in pinch
// center between start and end of the gesture.
pp::Point pinch_vector =
pp::Point(dict.Get(kJSPinchVectorX).AsDouble() * zoom_ratio,
dict.Get(kJSPinchVectorY).AsDouble() * zoom_ratio);
pp::Point scroll_delta;
// If the rendered document doesn't fill the display area we will
// use |paint_offset| to anchor the paint vertically into the same place.
// We use the scroll bars instead of the pinch vector to get the actual
// position on screen of the paint.
pp::Point paint_offset;
if (plugin_size_.width() > GetDocumentPixelWidth() * zoom_ratio) {
// We want to keep the paint in the middle but it must stay in the same
// position relative to the scroll bars.
paint_offset = pp::Point(0, (1 - zoom_ratio) * pinch_center.y());
scroll_delta =
pp::Point(0, (scroll_offset.y() -
scroll_offset_at_last_raster_.y() * zoom_ratio));
pinch_vector = pp::Point();
last_bitmap_smaller_ = true;
} else if (last_bitmap_smaller_) {
pinch_center = pp::Point((plugin_size_.width() / device_scale_) / 2,
(plugin_size_.height() / device_scale_) / 2);
const double zoom_when_doc_covers_plugin_width =
zoom_ * plugin_size_.width() / GetDocumentPixelWidth();
paint_offset = pp::Point(
(1 - zoom / zoom_when_doc_covers_plugin_width) * pinch_center.x(),
(1 - zoom_ratio) * pinch_center.y());
pinch_vector = pp::Point();
scroll_delta =
pp::Point((scroll_offset.x() -
scroll_offset_at_last_raster_.x() * zoom_ratio),
(scroll_offset.y() -
scroll_offset_at_last_raster_.y() * zoom_ratio));
}
paint_manager_.SetTransform(zoom_ratio, pinch_center,
pinch_vector + paint_offset + scroll_delta,
true);
needs_reraster_ = false;
return;
}
if (pinch_phase == PINCH_UPDATE_ZOOM_OUT || pinch_phase == PINCH_END) {
// We reraster on pinch zoom out in order to solve the invalid regions
// that appear after zooming out.
// On pinch end the scale is again 1.f and we request a reraster
// in the new position.
paint_manager_.ClearTransform();
last_bitmap_smaller_ = false;
needs_reraster_ = true;
// If we're rerastering due to zooming out, we need to update
// |scroll_offset_at_last_raster_|, in case the user continues the
// gesture by zooming in.
scroll_offset_at_last_raster_ = scroll_offset;
}
// Bound the input parameters.
zoom = std::max(kMinZoom, zoom);
DCHECK(dict.Get(pp::Var(kJSUserInitiated)).is_bool());
if (dict.Get(pp::Var(kJSUserInitiated)).AsBool())
PrintPreviewHistogramEnumeration(UPDATE_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 == kJSSaveType) {
engine_->KillFormFocus();
pp::PDF::SaveAs(this);
} else if (type == kJSRotateClockwiseType) {
RotateClockwise();
} else if (type == kJSRotateCounterclockwiseType) {
RotateCounterclockwise();
} else if (type == kJSSelectAllType) {
engine_->SelectAll();
} 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()) {
// For security reasons, crash if the URL that is trying to be loaded here
// isn't a print preview one.
std::string url = dict.Get(pp::Var(kJSPrintPreviewUrl)).AsString();
CHECK(IsPrintPreview());
CHECK(IsPrintPreviewUrl(url));
int print_preview_page_count =
dict.Get(pp::Var(kJSPrintPreviewPageCount)).AsInt();
if (print_preview_page_count < 0) {
NOTREACHED();
return;
}
// The page count is zero if the print preview source is a PDF. In which
// case, the page index for |url| should be at |kCompletePDFIndex|.
// When the page count is not zero, then the source is not PDF. In which
// case, the page index for |url| should be non-negative.
bool is_previewing_pdf = IsPreviewingPDF(print_preview_page_count);
int page_index = ExtractPrintPreviewPageIndex(url);
if (is_previewing_pdf) {
if (page_index != kCompletePDFIndex) {
NOTREACHED();
return;
}
} else {
if (page_index < 0) {
NOTREACHED();
return;
}
}
print_preview_page_count_ = print_preview_page_count;
print_preview_loaded_page_count_ = 0;
url_ = url;
preview_pages_info_ = base::queue<PreviewPageInfo>();
preview_document_load_state_ = LOAD_STATE_COMPLETE;
document_load_state_ = LOAD_STATE_LOADING;
LoadUrl(url_, /*is_print_preview=*/false);
preview_engine_.reset();
engine_ = PDFEngine::Create(this);
engine_->SetGrayscale(dict.Get(pp::Var(kJSPrintPreviewGrayscale)).AsBool());
engine_->New(url_.c_str(), nullptr /* empty header */);
paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
PrintPreviewHistogramEnumeration(PRINT_PREVIEW_SHOWN);
} else if (type == kJSLoadPreviewPageType &&
dict.Get(pp::Var(kJSPreviewPageUrl)).is_string() &&
dict.Get(pp::Var(kJSPreviewPageIndex)).is_int()) {
std::string url = dict.Get(pp::Var(kJSPreviewPageUrl)).AsString();
// For security reasons we crash if the URL that is trying to be loaded here
// isn't a print preview one.
CHECK(IsPrintPreview());
CHECK(IsPrintPreviewUrl(url));
ProcessPreviewPageInfo(url, dict.Get(pp::Var(kJSPreviewPageIndex)).AsInt());
} else if (type == kJSStopScrollingType) {
stop_scrolling_ = true;
} else if (type == kJSGetSelectedTextType) {
std::string selected_text = engine_->GetSelectedText();
// Always return unix newlines to JS.
base::ReplaceChars(selected_text, "\r", std::string(), &selected_text);
pp::VarDictionary reply;
reply.Set(pp::Var(kType), pp::Var(kJSGetSelectedTextReplyType));
reply.Set(pp::Var(kJSSelectedText), selected_text);
PostMessage(reply);
} else if (type == kJSGetNamedDestinationType &&
dict.Get(pp::Var(kJSGetNamedDestination)).is_string()) {
int page_number = engine_->GetNamedDestinationPage(
dict.Get(pp::Var(kJSGetNamedDestination)).AsString());
pp::VarDictionary reply;
reply.Set(pp::Var(kType), pp::Var(kJSGetNamedDestinationReplyType));
if (page_number >= 0)
reply.Set(pp::Var(kJSNamedDestinationPageNumber), page_number);
PostMessage(reply);
} else if (type == kJSTransformPagePointType &&
dict.Get(pp::Var(kJSPageNumber)).is_int() &&
dict.Get(pp::Var(kJSPageX)).is_int() &&
dict.Get(pp::Var(kJSPageY)).is_int() &&
dict.Get(pp::Var(kJSId)).is_int()) {
std::pair<int, int> xy =
engine_->TransformPagePoint(dict.Get(pp::Var(kJSPageNumber)).AsInt(),
{dict.Get(pp::Var(kJSPageX)).AsInt(),
dict.Get(pp::Var(kJSPageY)).AsInt()});
pp::VarDictionary reply;
reply.Set(pp::Var(kType), pp::Var(kJSTransformPagePointReplyType));
reply.Set(pp::Var(kJSPositionX), xy.first);
reply.Set(pp::Var(kJSPositionY), xy.second);
reply.Set(pp::Var(kJSId), dict.Get(pp::Var(kJSId)).AsInt());
PostMessage(reply);
} else {
NOTREACHED();
}
}
bool OutOfProcessInstance::HandleInputEvent(const pp::InputEvent& event) {
// To simplify things, convert the event into device coordinates.
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);
point.set_x(point.x() - available_area_.x());
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::TouchInputEvent touch_event(event);
if (!touch_event.is_null()) {
pp::TouchInputEvent new_touch_event = pp::TouchInputEvent(
this, touch_event.GetType(), touch_event.GetTimeStamp(),
touch_event.GetModifiers());
for (uint32_t i = 0;
i < touch_event.GetTouchCount(PP_TOUCHLIST_TYPE_TARGETTOUCHES);
i++) {
pp::TouchPoint touch_point =
touch_event.GetTouchByIndex(PP_TOUCHLIST_TYPE_TARGETTOUCHES, i);
pp::FloatPoint point = touch_point.position();
ScaleFloatPoint(device_scale_, &point);
point.set_x(point.x() - available_area_.x());
new_touch_event.AddTouchPoint(
PP_TOUCHLIST_TYPE_TARGETTOUCHES,
{touch_point.id(), point, touch_point.radii(),
touch_point.rotation_angle(), touch_point.pressure()});
}
event_device_res = new_touch_event;
}
}
if (engine_->HandleEvent(event_device_res))
return true;
// Middle click is used for scrolling and is handled by the container page.
pp::MouseInputEvent mouse_event(event_device_res);
if (!mouse_event.is_null() &&
mouse_event.GetButton() == PP_INPUTEVENT_MOUSEBUTTON_MIDDLE) {
return false;
}
// 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_) {
scroll_offset_ = view.GetScrollOffset();
// Because view messages come from the DOM, the coordinates of the viewport
// are 0-based (i.e. they do not correspond to the viewport's coordinates in
// JS), so we need to subtract the toolbar height to convert them into
// viewport coordinates.
pp::FloatPoint scroll_offset_float(
scroll_offset_.x(),
scroll_offset_.y() - top_toolbar_height_in_viewport_coords_);
scroll_offset_float = BoundScrollOffsetToDocument(scroll_offset_float);
engine_->ScrolledToXPosition(scroll_offset_float.x() * device_scale_);
engine_->ScrolledToYPosition(scroll_offset_float.y() * device_scale_);
}
}
void OutOfProcessInstance::DidChangeFocus(bool has_focus) {
if (!has_focus)
engine_->KillFormFocus();
}
void OutOfProcessInstance::GetPrintPresetOptionsFromDocument(
PP_PdfPrintPresetOptions_Dev* options) {
options->is_scaling_disabled = PP_FromBool(IsPrintScalingDisabled());
options->duplex =
static_cast<PP_PrivateDuplexMode_Dev>(engine_->GetDuplexType());
options->copies = engine_->GetCopiesToPrint();
pp::Size uniform_page_size;
options->is_page_size_uniform =
PP_FromBool(engine_->GetPageSizeAndUniformity(&uniform_page_size));
options->uniform_page_size = uniform_page_size;
}
void OutOfProcessInstance::EnableAccessibility() {
if (accessibility_state_ == ACCESSIBILITY_STATE_LOADED)
return;
if (accessibility_state_ == ACCESSIBILITY_STATE_OFF)
accessibility_state_ = ACCESSIBILITY_STATE_PENDING;
if (document_load_state_ == LOAD_STATE_COMPLETE)
LoadAccessibility();
}
void OutOfProcessInstance::LoadAccessibility() {
accessibility_state_ = ACCESSIBILITY_STATE_LOADED;
PP_PrivateAccessibilityDocInfo doc_info;
doc_info.page_count = engine_->GetNumberOfPages();
doc_info.text_accessible = PP_FromBool(
engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE));
doc_info.text_copyable =
PP_FromBool(engine_->HasPermission(PDFEngine::PERMISSION_COPY));
pp::PDF::SetAccessibilityDocInfo(GetPluginInstance(), &doc_info);
// If the document contents isn't accessible, don't send anything more.
if (!(engine_->HasPermission(PDFEngine::PERMISSION_COPY) ||
engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE))) {
return;
}
SendAccessibilityViewportInfo();
// Schedule loading the first page.
pp::CompletionCallback callback = callback_factory_.NewCallback(
&OutOfProcessInstance::SendNextAccessibilityPage);
pp::Module::Get()->core()->CallOnMainThread(kAccessibilityPageDelayMs,
callback, 0);
}
void OutOfProcessInstance::SendNextAccessibilityPage(int32_t page_index) {
int page_count = engine_->GetNumberOfPages();
if (page_index < 0 || page_index >= page_count)
return;
int char_count = engine_->GetCharCount(page_index);
// Treat a char count of -1 (error) as 0 (an empty page), since
// other pages might have valid content.
if (char_count < 0)
char_count = 0;
PP_PrivateAccessibilityPageInfo page_info;
page_info.page_index = page_index;
page_info.bounds = engine_->GetPageBoundsRect(page_index);
page_info.char_count = char_count;
std::vector<PP_PrivateAccessibilityCharInfo> chars(page_info.char_count);
for (uint32_t i = 0; i < page_info.char_count; ++i) {
chars[i].unicode_character = engine_->GetCharUnicode(page_index, i);
}
std::vector<PP_PrivateAccessibilityTextRunInfo> text_runs;
int char_index = 0;
while (char_index < char_count) {
PP_PrivateAccessibilityTextRunInfo text_run_info;
pp::FloatRect bounds;
engine_->GetTextRunInfo(page_index, char_index, &text_run_info.len,
&text_run_info.font_size, &bounds);
DCHECK_LE(char_index + text_run_info.len,
static_cast<uint32_t>(char_count));
text_run_info.direction = PP_PRIVATEDIRECTION_LTR;
text_run_info.bounds = bounds;
text_runs.push_back(text_run_info);
// We need to provide enough information to draw a bounding box
// around any arbitrary text range, but the bounding boxes of characters
// we get from PDFium don't necessarily "line up". Walk through the
// characters in each text run and let the width of each character be
// the difference between the x coordinate of one character and the
// x coordinate of the next. The rest of the bounds of each character
// can be computed from the bounds of the text run.
pp::FloatRect char_bounds = engine_->GetCharBounds(page_index, char_index);
for (uint32_t i = 0; i < text_run_info.len - 1; i++) {
DCHECK_LT(char_index + i + 1, static_cast<uint32_t>(char_count));
pp::FloatRect next_char_bounds =
engine_->GetCharBounds(page_index, char_index + i + 1);
chars[char_index + i].char_width = next_char_bounds.x() - char_bounds.x();
char_bounds = next_char_bounds;
}
chars[char_index + text_run_info.len - 1].char_width = char_bounds.width();
char_index += text_run_info.len;
}
page_info.text_run_count = text_runs.size();
pp::PDF::SetAccessibilityPageInfo(GetPluginInstance(), &page_info,
text_runs.data(), chars.data());
// Schedule loading the next page.
pp::CompletionCallback callback = callback_factory_.NewCallback(
&OutOfProcessInstance::SendNextAccessibilityPage);
pp::Module::Get()->core()->CallOnMainThread(kAccessibilityPageDelayMs,
callback, page_index + 1);
}
void OutOfProcessInstance::SendAccessibilityViewportInfo() {
PP_PrivateAccessibilityViewportInfo viewport_info;
viewport_info.scroll.x = 0;
viewport_info.scroll.y =
-top_toolbar_height_in_viewport_coords_ * device_scale_;
viewport_info.offset = available_area_.point();
viewport_info.zoom = zoom_ * device_scale_;
pp::PDF::SetAccessibilityViewportInfo(GetPluginInstance(), &viewport_info);
}
void OutOfProcessInstance::SelectionChanged(const pp::Rect& left,
const pp::Rect& right) {
pp::Point l(left.point().x() + available_area_.x(), left.point().y());
pp::Point r(right.x() + available_area_.x(), right.point().y());
float inverse_scale = 1.0f / device_scale_;
ScalePoint(inverse_scale, &l);
ScalePoint(inverse_scale, &r);
pp::PDF::SelectionChanged(GetPluginInstance(),
PP_MakeFloatPoint(l.x(), l.y()), left.height(),
PP_MakeFloatPoint(r.x(), r.y()), right.height());
}
void OutOfProcessInstance::SetCaretPosition(const pp::FloatPoint& position) {
pp::Point new_position(position.x(), position.y());
ScalePoint(device_scale_, &new_position);
new_position.set_x(new_position.x() - available_area_.x());
engine_->SetCaretPosition(new_position);
}
void OutOfProcessInstance::MoveRangeSelectionExtent(
const pp::FloatPoint& extent) {
pp::Point new_extent(extent.x(), extent.y());
ScalePoint(device_scale_, &new_extent);
new_extent.set_x(new_extent.x() - available_area_.x());
engine_->MoveRangeSelectionExtent(new_extent);
}
void OutOfProcessInstance::SetSelectionBounds(const pp::FloatPoint& base,
const pp::FloatPoint& extent) {
pp::Point new_base_point(base.x(), base.y());
ScalePoint(device_scale_, &new_base_point);
new_base_point.set_x(new_base_point.x() - available_area_.x());
pp::Point new_extent_point(extent.x(), extent.y());
ScalePoint(device_scale_, &new_extent_point);
new_extent_point.set_x(new_extent_point.x() - available_area_.x());
engine_->SetSelectionBounds(new_base_point, new_extent_point);
}
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);
}
bool OutOfProcessInstance::CanEditText() {
return engine_->CanEditText();
}
void OutOfProcessInstance::ReplaceSelection(const std::string& text) {
engine_->ReplaceSelection(text);
}
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, 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, background_color_);
ready->push_back(PaintManager::ReadyRect(rect, image_data_, true));
}
if (!received_viewport_message_ || !needs_reraster_)
return;
engine_->PrePaint();
for (const auto& paint_rect : paint_rects) {
// Intersect with plugin area since there could be pending invalidates from
// when the plugin area was larger.
pp::Rect rect = paint_rect.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 (auto& ready_rect : pdf_ready) {
ready_rect.Offset(available_area_.point());
ready->push_back(
PaintManager::ReadyRect(ready_rect, image_data_, false));
}
for (auto& pending_rect : pdf_pending) {
pending_rect.Offset(available_area_.point());
pending->push_back(pending_rect);
}
}
// Ensure the region above the first page (if any) is filled;
int32_t first_page_ypos = engine_->GetNumberOfPages() == 0
? 0
: engine_->GetPageScreenRect(0).y();
if (rect.y() < first_page_ypos) {
pp::Rect region = rect.Intersect(pp::Rect(
pp::Point(), pp::Size(plugin_size_.width(), first_page_ypos)));
ready->push_back(PaintManager::ReadyRect(region, image_data_, false));
FillRect(region, background_color_);
}
for (const auto& background_part : background_parts_) {
pp::Rect intersection = background_part.location.Intersect(rect);
if (!intersection.IsEmpty()) {
FillRect(intersection, background_part.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.
DocumentLoadFailed();
}
}
void OutOfProcessInstance::DidOpenPreview(int32_t result) {
if (result == PP_OK) {
preview_client_ = std::make_unique<PreviewModeClient>(this);
preview_engine_ = PDFEngine::Create(preview_client_.get());
preview_engine_->HandleDocumentLoad(embed_preview_loader_);
} else {
NOTREACHED();
}
}
void OutOfProcessInstance::OnClientTouchTimerFired(int32_t id) {
engine_->OnTouchTimerCallback(id);
}
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), background_color_};
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_t color) {
DCHECK(!image_data_.is_null() || rect.IsEmpty());
uint32_t* buffer_start = static_cast<uint32_t*>(image_data_.data());
int stride = image_data_.stride();
uint32_t* 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;
size_t num_pages = engine_->GetNumberOfPages();
if (page_is_processed_.size() < num_pages)
page_is_processed_.resize(num_pages);
for (size_t 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);
pp::PDF::DidScroll(GetPluginInstance());
}
}
void OutOfProcessInstance::ScrollToX(int x_in_screen_coords) {
pp::VarDictionary position;
position.Set(kType, kJSSetScrollPositionType);
position.Set(kJSPositionX, pp::Var(x_in_screen_coords / device_scale_));
PostMessage(position);
}
void OutOfProcessInstance::ScrollToY(int y_in_screen_coords,
bool compensate_for_toolbar) {
pp::VarDictionary position;
position.Set(kType, kJSSetScrollPositionType);
float new_y_viewport_coords = y_in_screen_coords / device_scale_;
if (compensate_for_toolbar) {
new_y_viewport_coords -= top_toolbar_height_in_viewport_coords_;
}
position.Set(kJSPositionY, pp::Var(new_y_viewport_coords));
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,
WindowOpenDisposition disposition) {
pp::VarDictionary message;
message.Set(kType, kJSNavigateType);
message.Set(kJSNavigateUrl, url);
message.Set(kJSNavigateWindowOpenDisposition,
pp::Var(static_cast<int32_t>(disposition)));
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(), nullptr);
}
void OutOfProcessInstance::UpdateTickMarks(
const std::vector<pp::Rect>& tickmarks) {
float inverse_scale = 1.0f / device_scale_;
std::vector<pp::Rect> scaled_tickmarks = tickmarks;
for (auto& tickmark : scaled_tickmarks)
ScaleRect(inverse_scale, &tickmark);
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 = callback_factory_.NewCallback(
&OutOfProcessInstance::ResetRecentlySentFindUpdate);
pp::Module::Get()->core()->CallOnMainThread(kFindResultCooldownMs, callback,
0);
}
void OutOfProcessInstance::NotifySelectedFindResultChanged(
int current_find_index) {
DCHECK_GE(current_find_index, -1);
SelectedFindResultChanged(current_find_index);
}
void OutOfProcessInstance::NotifyPageBecameVisible(
const PDFEngine::PageFeatures* page_features) {
if (!page_features || !page_features->IsInitialized() ||
page_features->index >= static_cast<int>(page_is_processed_.size()) ||
page_is_processed_[page_features->index]) {
return;
}
for (const int annotation_type : page_features->annotation_types) {
DCHECK_GE(annotation_type, 0);
DCHECK_LT(annotation_type, kAnnotationTypesCount);
if (annotation_type < 0 || annotation_type >= kAnnotationTypesCount)
continue;
if (annotation_types_counted_.find(annotation_type) ==
annotation_types_counted_.end()) {
HistogramEnumeration("PDF.AnnotationType", annotation_type,
kAnnotationTypesCount);
annotation_types_counted_.insert(annotation_type);
}
}
page_is_processed_[page_features->index] = true;
}
void OutOfProcessInstance::GetDocumentPassword(
pp::CompletionCallbackWithOutput<pp::Var> callback) {
if (password_callback_) {
NOTREACHED();
return;
}
password_callback_ =
std::make_unique<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 (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) {
return;
}
pp::CompletionCallback callback =
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 =
callback_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();
}
}
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, base::TimeDelta delay) {
pp::CompletionCallback callback =
callback_factory_.NewCallback(&OutOfProcessInstance::OnClientTimerFired);
pp::Module::Get()->core()->CallOnMainThread(delay.InMilliseconds(), callback,
id);
}
void OutOfProcessInstance::ScheduleTouchTimerCallback(int id,
base::TimeDelta delay) {
pp::CompletionCallback callback = callback_factory_.NewCallback(
&OutOfProcessInstance::OnClientTouchTimerFired);
pp::Module::Get()->core()->CallOnMainThread(delay.InMilliseconds(), callback,
id);
}
std::vector<PDFEngine::Client::SearchStringResult>
OutOfProcessInstance::SearchString(const base::char16* string,
const base::char16* term,
bool case_sensitive) {
PP_PrivateFindResult* pp_results;
uint32_t count = 0;
pp::PDF::SearchString(this, reinterpret_cast<const unsigned short*>(string),
reinterpret_cast<const unsigned short*>(term),
case_sensitive, &pp_results, &count);
std::vector<SearchStringResult> results(count);
for (uint32_t 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);
return results;
}
void OutOfProcessInstance::DocumentPaintOccurred() {}
void OutOfProcessInstance::DocumentLoadComplete(
const PDFEngine::DocumentFeatures& document_features) {
// Clear focus state for OSK.
FormTextFieldFocusChange(false);
DCHECK_EQ(LOAD_STATE_LOADING, document_load_state_);
document_load_state_ = LOAD_STATE_COMPLETE;
UserMetricsRecordAction("PDF.LoadSuccess");
HistogramEnumeration("PDF.DocumentFeature", LOADED_DOCUMENT, FEATURES_COUNT);
if (!font_substitution_reported_)
HistogramEnumeration("PDF.IsFontSubstituted", 0, 2);
// 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()) {
if (IsPreviewingPDF(print_preview_page_count_)) {
SendPrintPreviewLoadedNotification();
} else {
DCHECK_EQ(0, print_preview_loaded_page_count_);
print_preview_loaded_page_count_ = 1;
AppendBlankPrintPreviewPages();
}
OnGeometryChanged(0, 0);
}
pp::VarDictionary metadata_message;
metadata_message.Set(pp::Var(kType), pp::Var(kJSMetadataType));
std::string title = engine_->GetMetadata("Title");
if (!base::TrimWhitespace(base::UTF8ToUTF16(title), base::TRIM_ALL).empty()) {
metadata_message.Set(pp::Var(kJSTitle), pp::Var(title));
HistogramEnumeration("PDF.DocumentFeature", HAS_TITLE, FEATURES_COUNT);
}
pp::VarArray bookmarks = engine_->GetBookmarks();
metadata_message.Set(pp::Var(kJSBookmarks), bookmarks);
if (bookmarks.GetLength() > 0)
HistogramEnumeration("PDF.DocumentFeature", HAS_BOOKMARKS, FEATURES_COUNT);
PostMessage(metadata_message);
pp::VarDictionary progress_message;
progress_message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType));
progress_message.Set(pp::Var(kJSProgressPercentage), pp::Var(100));
PostMessage(progress_message);
if (accessibility_state_ == ACCESSIBILITY_STATE_PENDING)
LoadAccessibility();
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)) {
content_restrictions |= CONTENT_RESTRICTION_PRINT;
}
pp::PDF::SetContentRestriction(this, content_restrictions);
HistogramCustomCounts("PDF.PageCount", document_features.page_count, 1,
1000000, 50);
HistogramEnumeration("PDF.HasAttachment",
document_features.has_attachments ? 1 : 0, 2);
HistogramEnumeration("PDF.IsLinearized",
document_features.is_linearized ? 1 : 0, 2);
HistogramEnumeration("PDF.IsTagged", document_features.is_tagged ? 1 : 0, 2);
HistogramEnumeration("PDF.FormType",
static_cast<int32_t>(document_features.form_type),
static_cast<int32_t>(PDFEngine::FormType::kCount));
}
void OutOfProcessInstance::RotateClockwise() {
PrintPreviewHistogramEnumeration(ROTATE);
engine_->RotateClockwise();
}
void OutOfProcessInstance::RotateCounterclockwise() {
PrintPreviewHistogramEnumeration(ROTATE);
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;
DCHECK_GT(dest_page_index, 0);
preview_pages_info_.pop();
DCHECK(preview_engine_);
engine_->AppendPage(preview_engine_.get(), dest_page_index);
++print_preview_loaded_page_count_;
LoadNextPreviewPage();
}
void OutOfProcessInstance::DocumentLoadFailed() {
DCHECK_EQ(LOAD_STATE_LOADING, document_load_state_);
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::FontSubstituted() {
if (font_substitution_reported_)
return;
font_substitution_reported_ = true;
uma_.HistogramEnumeration("PDF.IsFontSubstituted", 1, 2);
}
void OutOfProcessInstance::PreviewDocumentLoadFailed() {
UserMetricsRecordAction("PDF.PreviewDocumentLoadFailure");
if (preview_document_load_state_ != LOAD_STATE_LOADING ||
preview_pages_info_.empty()) {
return;
}
// Even if a print preview page failed to load, keep going.
preview_document_load_state_ = LOAD_STATE_FAILED;
preview_pages_info_.pop();
++print_preview_loaded_page_count_;
LoadNextPreviewPage();
}
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_t available,
uint32_t doc_size) {
double progress = 0.0;
if (doc_size) {
progress = 100.0 * static_cast<double>(available) / doc_size;
} else {
// 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 = std::min(log(static_cast<double>(available)) / kFactor, 100.0);
}
// 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_)
return;
pp::VarDictionary message;
message.Set(pp::Var(kType), pp::Var(kJSFieldFocusType));
message.Set(pp::Var(kJSFieldFocus), pp::Var(in_focus));
PostMessage(message);
text_input_->SetTextInputType(in_focus ? PP_TEXTINPUT_TYPE_DEV_TEXT
: 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 bottom_of_document =
GetDocumentPixelHeight() +
(top_toolbar_height_in_viewport_coords_ * device_scale_);
if (bottom_of_document < available_area_.height())
available_area_.set_height(bottom_of_document);
CalculateBackgroundParts();
engine_->PageOffsetUpdated(available_area_.point());
engine_->PluginSizeUpdated(available_area_.size());
if (document_size_.IsEmpty())
return;
paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
if (accessibility_state_ == ACCESSIBILITY_STATE_LOADED)
SendAccessibilityViewportInfo();
}
void OutOfProcessInstance::LoadUrl(const std::string& url,
bool is_print_preview) {
pp::URLRequestInfo request(this);
request.SetURL(url);
request.SetMethod("GET");
request.SetFollowRedirects(false);
pp::URLLoader* loader =
is_print_preview ? &embed_preview_loader_ : &embed_loader_;
*loader = CreateURLLoaderInternal();
pp::CompletionCallback callback = callback_factory_.NewCallback(
is_print_preview ? &OutOfProcessInstance::DidOpenPreview
: &OutOfProcessInstance::DidOpen);
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_);
}
void OutOfProcessInstance::AppendBlankPrintPreviewPages() {
engine_->AppendBlankPages(print_preview_page_count_);
LoadNextPreviewPage();
}
bool OutOfProcessInstance::IsPrintPreview() {
return is_print_preview_;
}
uint32_t OutOfProcessInstance::GetBackgroundColor() {
return background_color_;
}
void OutOfProcessInstance::CancelBrowserDownload() {
pp::VarDictionary message;
message.Set(kType, kJSCancelStreamUrlType);
PostMessage(message);
}
void OutOfProcessInstance::IsSelectingChanged(bool is_selecting) {
pp::VarDictionary message;
message.Set(kType, kJSSetIsSelectingType);
message.Set(kJSIsSelecting, pp::Var(is_selecting));
PostMessage(message);
if (is_selecting)
PrintPreviewHistogramEnumeration(SELECT_TEXT);
}
void OutOfProcessInstance::IsEditModeChanged(bool is_edit_mode) {
pp::VarDictionary message;
message.Set(kType, kJSSetIsEditModeType);
message.Set(kJSIsEditMode, pp::Var(is_edit_mode));
PostMessage(message);
}
void OutOfProcessInstance::ProcessPreviewPageInfo(const std::string& url,
int dest_page_index) {
DCHECK(IsPrintPreview());
if (dest_page_index < 0 || dest_page_index >= print_preview_page_count_) {
NOTREACHED();
return;
}
// Print Preview JS will send the loadPreviewPage message for every page,
// including the first page in the print preview, which has already been
// loaded when handing the resetPrintPreviewMode message. Just ignore it.
if (dest_page_index == 0)
return;
int src_page_index = ExtractPrintPreviewPageIndex(url);
if (src_page_index < 0) {
NOTREACHED();
return;
}
preview_pages_info_.push(std::make_pair(url, dest_page_index));
LoadAvailablePreviewPage();
}
void OutOfProcessInstance::LoadAvailablePreviewPage() {
if (preview_pages_info_.empty() ||
document_load_state_ != LOAD_STATE_COMPLETE ||
preview_document_load_state_ == LOAD_STATE_LOADING) {
return;
}
preview_document_load_state_ = LOAD_STATE_LOADING;
const std::string& url = preview_pages_info_.front().first;
LoadUrl(url, /*is_print_preview=*/true);
}
void OutOfProcessInstance::LoadNextPreviewPage() {
if (!preview_pages_info_.empty()) {
DCHECK_LT(print_preview_loaded_page_count_, print_preview_page_count_);
LoadAvailablePreviewPage();
return;
}
if (print_preview_loaded_page_count_ == print_preview_page_count_) {
SendPrintPreviewLoadedNotification();
}
}
void OutOfProcessInstance::SendPrintPreviewLoadedNotification() {
pp::VarDictionary loaded_message;
loaded_message.Set(pp::Var(kType), pp::Var(kJSPreviewLoadedType));
PostMessage(loaded_message);
}
void OutOfProcessInstance::UserMetricsRecordAction(const std::string& action) {
// TODO(raymes): Move this function to PPB_UMA_Private.
pp::PDF::UserMetricsRecordAction(this, pp::Var(action));
}
pp::FloatPoint OutOfProcessInstance::BoundScrollOffsetToDocument(
const pp::FloatPoint& scroll_offset) {
float max_x = document_size_.width() * zoom_ - plugin_dip_size_.width();
float x = std::max(std::min(scroll_offset.x(), max_x), 0.0f);
float min_y = -top_toolbar_height_in_viewport_coords_;
float max_y = document_size_.height() * zoom_ - plugin_dip_size_.height();
float y = std::max(std::min(scroll_offset.y(), max_y), min_y);
return pp::FloatPoint(x, y);
}
void OutOfProcessInstance::HistogramCustomCounts(const std::string& name,
int32_t sample,
int32_t min,
int32_t max,
uint32_t bucket_count) {
if (IsPrintPreview())
return;
uma_.HistogramCustomCounts(name, sample, min, max, bucket_count);
}
void OutOfProcessInstance::HistogramEnumeration(const std::string& name,
int32_t sample,
int32_t boundary_value) {
if (IsPrintPreview())
return;
uma_.HistogramEnumeration(name, sample, boundary_value);
}
void OutOfProcessInstance::PrintPreviewHistogramEnumeration(int32_t sample) {
if (!IsPrintPreview())
return;
if (preview_action_recorded_[sample])
return;
uma_.HistogramEnumeration("PrintPreview.PdfAction", sample,
PDFACTION_BUCKET_BOUNDARY);
preview_action_recorded_[sample] = true;
}
} // namespace chrome_pdf