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pdf_view_web_plugin.cc
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pdf_view_web_plugin.cc
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// Copyright 2020 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/pdf_view_web_plugin.h"
#include <stddef.h>
#include <stdint.h>
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "base/check_op.h"
#include "base/debug/crash_logging.h"
#include "base/i18n/char_iterator.h"
#include "base/i18n/string_search.h"
#include "base/memory/raw_ptr.h"
#include "base/no_destructor.h"
#include "base/notreached.h"
#include "base/strings/string_piece.h"
#include "base/thread_annotations.h"
#include "base/threading/sequenced_task_runner_handle.h"
#include "base/threading/thread_checker.h"
#include "base/threading/thread_task_runner_handle.h"
#include "base/time/time.h"
#include "base/values.h"
#include "cc/paint/paint_canvas.h"
#include "cc/paint/paint_flags.h"
#include "cc/paint/paint_image.h"
#include "cc/paint/paint_image_builder.h"
#include "net/cookies/site_for_cookies.h"
#include "pdf/accessibility_structs.h"
#include "pdf/mojom/pdf.mojom.h"
#include "pdf/parsed_params.h"
#include "pdf/pdf_accessibility_data_handler.h"
#include "pdf/pdf_engine.h"
#include "pdf/pdf_init.h"
#include "pdf/pdfium/pdfium_engine.h"
#include "pdf/post_message_receiver.h"
#include "pdf/ppapi_migration/bitmap.h"
#include "pdf/ppapi_migration/graphics.h"
#include "pdf/ppapi_migration/result_codes.h"
#include "pdf/ppapi_migration/url_loader.h"
#include "printing/metafile_skia.h"
#include "services/network/public/mojom/referrer_policy.mojom-shared.h"
#include "third_party/blink/public/common/associated_interfaces/associated_interface_provider.h"
#include "third_party/blink/public/common/input/web_coalesced_input_event.h"
#include "third_party/blink/public/common/input/web_input_event.h"
#include "third_party/blink/public/common/input/web_keyboard_event.h"
#include "third_party/blink/public/common/metrics/document_update_reason.h"
#include "third_party/blink/public/mojom/input/focus_type.mojom-shared.h"
#include "third_party/blink/public/platform/platform.h"
#include "third_party/blink/public/platform/web_input_event_result.h"
#include "third_party/blink/public/platform/web_security_origin.h"
#include "third_party/blink/public/platform/web_string.h"
#include "third_party/blink/public/platform/web_text_input_type.h"
#include "third_party/blink/public/platform/web_url.h"
#include "third_party/blink/public/platform/web_url_error.h"
#include "third_party/blink/public/platform/web_url_request.h"
#include "third_party/blink/public/platform/web_url_response.h"
#include "third_party/blink/public/platform/web_vector.h"
#include "third_party/blink/public/web/web_associated_url_loader.h"
#include "third_party/blink/public/web/web_associated_url_loader_options.h"
#include "third_party/blink/public/web/web_document.h"
#include "third_party/blink/public/web/web_element.h"
#include "third_party/blink/public/web/web_frame.h"
#include "third_party/blink/public/web/web_frame_widget.h"
#include "third_party/blink/public/web/web_local_frame.h"
#include "third_party/blink/public/web/web_local_frame_client.h"
#include "third_party/blink/public/web/web_plugin_container.h"
#include "third_party/blink/public/web/web_plugin_params.h"
#include "third_party/blink/public/web/web_print_preset_options.h"
#include "third_party/blink/public/web/web_view.h"
#include "third_party/blink/public/web/web_widget.h"
#include "third_party/skia/include/core/SkColor.h"
#include "third_party/skia/include/core/SkRect.h"
#include "third_party/skia/include/core/SkRefCnt.h"
#include "ui/base/cursor/cursor.h"
#include "ui/base/cursor/mojom/cursor_type.mojom-shared.h"
#include "ui/display/screen_info.h"
#include "ui/events/base_event_utils.h"
#include "ui/events/blink/blink_event_util.h"
#include "ui/events/keycodes/keyboard_codes.h"
#include "ui/gfx/geometry/point.h"
#include "ui/gfx/geometry/point_f.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/skia_conversions.h"
#include "ui/gfx/geometry/vector2d.h"
#include "ui/gfx/geometry/vector2d_f.h"
#include "ui/gfx/range/range.h"
#include "url/gurl.h"
#include "v8/include/v8.h"
namespace chrome_pdf {
namespace {
constexpr base::TimeDelta kFindResultCooldown = base::Milliseconds(100);
// Initialization performed per renderer process. Initialization may be
// triggered from multiple plugin instances, but should only execute once.
//
// TODO(crbug.com/1123621): We may be able to simplify this once we've figured
// out exactly which processes need to initialize and shutdown PDFium.
class PerProcessInitializer final {
public:
static PerProcessInitializer& GetInstance() {
static base::NoDestructor<PerProcessInitializer,
base::AllowForTriviallyDestructibleType>
instance;
return *instance;
}
void Acquire() {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
DCHECK_GE(init_count_, 0);
if (init_count_++ > 0)
return;
DCHECK(!IsSDKInitializedViaPlugin());
InitializeSDK(/*enable_v8=*/true, FontMappingMode::kBlink);
SetIsSDKInitializedViaPlugin(true);
}
void Release() {
DCHECK_CALLED_ON_VALID_THREAD(thread_checker_);
DCHECK_GT(init_count_, 0);
if (--init_count_ > 0)
return;
DCHECK(IsSDKInitializedViaPlugin());
ShutdownSDK();
SetIsSDKInitializedViaPlugin(false);
}
private:
int init_count_ GUARDED_BY_CONTEXT(thread_checker_) = 0;
// TODO(crbug.com/1123731): Assuming PDFium is thread-hostile for now, and
// must use one thread exclusively.
THREAD_CHECKER(thread_checker_);
};
class BlinkContainerWrapper final : public PdfViewWebPlugin::ContainerWrapper {
public:
explicit BlinkContainerWrapper(blink::WebPluginContainer* container)
: container_(container) {
DCHECK(container_);
}
BlinkContainerWrapper(const BlinkContainerWrapper&) = delete;
BlinkContainerWrapper& operator=(const BlinkContainerWrapper&) = delete;
~BlinkContainerWrapper() override = default;
void Invalidate() override { container_->Invalidate(); }
void RequestTouchEventType(
blink::WebPluginContainer::TouchEventRequestType request_type) override {
container_->RequestTouchEventType(request_type);
}
void ReportFindInPageMatchCount(int identifier,
int total,
bool final_update) override {
container_->ReportFindInPageMatchCount(identifier, total, final_update);
}
void ReportFindInPageSelection(int identifier, int index) override {
container_->ReportFindInPageSelection(identifier, index);
}
void ReportFindInPageTickmarks(
const std::vector<gfx::Rect>& tickmarks) override {
blink::WebLocalFrame* frame = GetFrame();
if (frame) {
frame->SetTickmarks(blink::WebElement(),
blink::WebVector<gfx::Rect>(tickmarks));
}
}
float DeviceScaleFactor() override {
// Do not reply on the device scale returned by
// `container_->DeviceScaleFactor()`, since it doesn't always reflect the
// real screen's device scale. Instead, get the real device scale from the
// top-level `blink::WebLocalFrame`'s screen info.
blink::WebWidget* widget = GetFrame()->LocalRoot()->FrameWidget();
return widget->GetOriginalScreenInfo().device_scale_factor;
}
gfx::PointF GetScrollPosition() override {
// Note that `blink::WebLocalFrame::GetScrollOffset()` actually returns a
// scroll position (a point relative to the top-left corner).
return GetFrame()->GetScrollOffset();
}
void SetReferrerForRequest(blink::WebURLRequest& request,
const blink::WebURL& referrer_url) override {
GetFrame()->SetReferrerForRequest(request, referrer_url);
}
void Alert(const blink::WebString& message) override {
blink::WebLocalFrame* frame = GetFrame();
if (frame)
frame->Alert(message);
}
bool Confirm(const blink::WebString& message) override {
blink::WebLocalFrame* frame = GetFrame();
return frame && frame->Confirm(message);
}
blink::WebString Prompt(const blink::WebString& message,
const blink::WebString& default_value) override {
blink::WebLocalFrame* frame = GetFrame();
return frame ? frame->Prompt(message, default_value) : blink::WebString();
}
void TextSelectionChanged(const blink::WebString& selection_text,
uint32_t offset,
const gfx::Range& range) override {
// Focus the plugin's containing frame before changing the text selection.
// TODO(crbug.com/1234559): Would it make more sense not to change the text
// selection at all in this case? Maybe we only have this problem because we
// support a "selectAll" message.
blink::WebLocalFrame* frame = GetFrame();
frame->View()->SetFocusedFrame(frame);
frame->TextSelectionChanged(selection_text, offset, range);
}
std::unique_ptr<blink::WebAssociatedURLLoader> CreateAssociatedURLLoader(
const blink::WebAssociatedURLLoaderOptions& options) override {
return GetFrame()->CreateAssociatedURLLoader(options);
}
void UpdateTextInputState() override {
// `widget` is null in Print Preview.
auto* widget = GetFrame()->FrameWidget();
if (widget)
widget->UpdateTextInputState();
}
void UpdateSelectionBounds() override {
// `widget` is null in Print Preview.
auto* widget = GetFrame()->FrameWidget();
if (widget)
widget->UpdateSelectionBounds();
}
std::string GetEmbedderOriginString() override {
auto* frame = GetFrame();
if (!frame)
return {};
auto* parent_frame = frame->Parent();
if (!parent_frame)
return {};
return GURL(parent_frame->GetSecurityOrigin().ToString().Utf8()).spec();
}
blink::WebLocalFrame* GetFrame() override {
return container_->GetDocument().GetFrame();
}
blink::WebLocalFrameClient* GetWebLocalFrameClient() override {
return GetFrame()->Client();
}
blink::WebPluginContainer* Container() override { return container_; }
private:
const raw_ptr<blink::WebPluginContainer> container_;
};
} // namespace
std::unique_ptr<PdfAccessibilityDataHandler>
PdfViewWebPlugin::Client::CreateAccessibilityDataHandler(
PdfAccessibilityActionHandler* action_handler) {
return nullptr;
}
bool PdfViewWebPlugin::Client::IsUseZoomForDSFEnabled() const {
return false;
}
PdfViewWebPlugin::PdfViewWebPlugin(
std::unique_ptr<Client> client,
mojo::AssociatedRemote<pdf::mojom::PdfService> pdf_service_remote,
const blink::WebPluginParams& params)
: client_(std::move(client)),
pdf_service_remote_(std::move(pdf_service_remote)),
initial_params_(params),
post_message_sender_(client_.get()),
pdf_accessibility_data_handler_(
client_->CreateAccessibilityDataHandler(this)) {
auto* service = GetPdfService();
if (service)
service->SetListener(listener_receiver_.BindNewPipeAndPassRemote());
}
PdfViewWebPlugin::~PdfViewWebPlugin() = default;
bool PdfViewWebPlugin::Initialize(blink::WebPluginContainer* container) {
DCHECK_EQ(container->Plugin(), this);
return InitializeCommon(std::make_unique<BlinkContainerWrapper>(container),
nullptr);
}
bool PdfViewWebPlugin::InitializeForTesting(
std::unique_ptr<ContainerWrapper> container_wrapper,
std::unique_ptr<PDFiumEngine> engine) {
return InitializeCommon(std::move(container_wrapper), std::move(engine));
}
bool PdfViewWebPlugin::InitializeCommon(
std::unique_ptr<ContainerWrapper> container_wrapper,
std::unique_ptr<PDFiumEngine> engine) {
container_wrapper_ = std::move(container_wrapper);
post_message_sender_.set_container(Container());
// Allow the plugin to handle touch events.
container_wrapper_->RequestTouchEventType(
blink::WebPluginContainer::kTouchEventRequestTypeRaw);
// Allow the plugin to handle find requests.
if (Container())
Container()->UsePluginAsFindHandler();
absl::optional<ParsedParams> params = ParseWebPluginParams(initial_params_);
// The contents of `initial_params_` are no longer needed.
initial_params_ = {};
if (!params.has_value())
return false;
// Sets crash keys like `ppapi::proxy::PDFResource::SetCrashData()`. Note that
// we don't set the active URL from the top-level URL, as unlike within a
// plugin process, the active URL changes frequently within a renderer process
// (see crbug.com/1266050 for details).
//
// TODO(crbug.com/1266087): If multiple PDF plugin instances share the same
// renderer process, the crash key will be overwritten by the newest value.
static base::debug::CrashKeyString* subresource_url =
base::debug::AllocateCrashKeyString("subresource_url",
base::debug::CrashKeySize::Size256);
base::debug::SetCrashKeyString(subresource_url, params->original_url);
PerProcessInitializer::GetInstance().Acquire();
InitializeBase(
engine ? std::move(engine)
: std::make_unique<PDFiumEngine>(this, params->script_option),
/*embedder_origin=*/container_wrapper_->GetEmbedderOriginString(),
/*src_url=*/params->src_url,
/*original_url=*/params->original_url,
/*full_frame=*/params->full_frame,
/*background_color=*/params->background_color,
/*has_edits=*/params->has_edits);
SendSetSmoothScrolling();
return true;
}
void PdfViewWebPlugin::SendSetSmoothScrolling() {
base::Value message(base::Value::Type::DICTIONARY);
message.SetStringKey("type", "setSmoothScrolling");
message.SetBoolKey("smoothScrolling",
blink::Platform::Current()->IsScrollAnimatorEnabled());
SendMessage(std::move(message));
}
void PdfViewWebPlugin::Destroy() {
if (container_wrapper_) {
// Explicitly destroy the PDFEngine during destruction as it may call back
// into this object.
DestroyPreviewEngine();
DestroyEngine();
PerProcessInitializer::GetInstance().Release();
post_message_sender_.set_container(nullptr);
container_wrapper_.reset();
}
delete this;
}
blink::WebPluginContainer* PdfViewWebPlugin::Container() const {
return container_wrapper_ ? container_wrapper_->Container() : nullptr;
}
v8::Local<v8::Object> PdfViewWebPlugin::V8ScriptableObject(
v8::Isolate* isolate) {
if (scriptable_receiver_.IsEmpty()) {
// TODO(crbug.com/1123731): Messages should not be handled on the renderer
// main thread.
scriptable_receiver_.Reset(
isolate, PostMessageReceiver::Create(
isolate, client_->GetWeakPtr(), weak_factory_.GetWeakPtr(),
base::SequencedTaskRunnerHandle::Get()));
}
return scriptable_receiver_.Get(isolate);
}
bool PdfViewWebPlugin::SupportsKeyboardFocus() const {
return !IsPrintPreview();
}
void PdfViewWebPlugin::UpdateAllLifecyclePhases(
blink::DocumentUpdateReason reason) {}
void PdfViewWebPlugin::Paint(cc::PaintCanvas* canvas, const gfx::Rect& rect) {
// Clip the intersection of the paint rect and the plugin rect, so that
// painting outside the plugin or the paint rect area can be avoided.
// Note: `rect` is in CSS pixels. We need to use `css_plugin_rect_`
// to calculate the intersection.
SkRect invalidate_rect =
gfx::RectToSkRect(gfx::IntersectRects(css_plugin_rect_, rect));
cc::PaintCanvasAutoRestore auto_restore(canvas, /*save=*/true);
canvas->clipRect(invalidate_rect);
// Paint with the plugin's background color if the snapshot is not ready.
if (snapshot_.GetSkImageInfo().isEmpty()) {
cc::PaintFlags flags;
flags.setBlendMode(SkBlendMode::kSrc);
flags.setColor(GetBackgroundColor());
canvas->drawRect(invalidate_rect, flags);
return;
}
// Layer translate is independent of scaling, so apply first.
if (!total_translate_.IsZero())
canvas->translate(total_translate_.x(), total_translate_.y());
if (device_to_css_scale_ != 1.0f)
canvas->scale(device_to_css_scale_, device_to_css_scale_);
// Position layer at plugin origin before layer scaling.
if (!plugin_rect().origin().IsOrigin())
canvas->translate(plugin_rect().x(), plugin_rect().y());
if (snapshot_scale_ != 1.0f)
canvas->scale(snapshot_scale_, snapshot_scale_);
canvas->drawImage(snapshot_, 0, 0);
}
void PdfViewWebPlugin::UpdateGeometry(const gfx::Rect& window_rect,
const gfx::Rect& clip_rect,
const gfx::Rect& unobscured_rect,
bool is_visible) {
// An empty `window_rect` can be received here in the following cases:
// - If the embedded plugin size is 0.
// - If the embedded plugin size is not 0, it can come from re-layouts during
// the plugin initialization.
// For either case, there is no need to create a graphic device to display
// a PDF in an empty window. Since an empty `window_rect` can cause failure
// to create the graphic device, avoid all updates on the geometries and the
// device scales used by the plugin, the PaintManager and the PDFiumEngine
// unless a non-empty `window_rect` is received.
if (window_rect.IsEmpty())
return;
OnViewportChanged(window_rect, container_wrapper_->DeviceScaleFactor());
gfx::PointF scroll_position = container_wrapper_->GetScrollPosition();
if (client_->IsUseZoomForDSFEnabled()) {
// Convert back to CSS pixels.
scroll_position.Scale(1.0f / device_scale());
}
UpdateScroll(scroll_position);
}
void PdfViewWebPlugin::UpdateFocus(bool focused,
blink::mojom::FocusType focus_type) {
if (has_focus_ != focused) {
engine()->UpdateFocus(focused);
container_wrapper_->UpdateTextInputState();
container_wrapper_->UpdateSelectionBounds();
}
has_focus_ = focused;
if (!has_focus_ || !SupportsKeyboardFocus())
return;
if (focus_type != blink::mojom::FocusType::kBackward &&
focus_type != blink::mojom::FocusType::kForward) {
return;
}
const int modifiers = focus_type == blink::mojom::FocusType::kForward
? blink::WebInputEvent::kNoModifiers
: blink::WebInputEvent::kShiftKey;
blink::WebKeyboardEvent simulated_event(blink::WebInputEvent::Type::kKeyDown,
modifiers, base::TimeTicks());
simulated_event.windows_key_code = ui::KeyboardCode::VKEY_TAB;
PdfViewPluginBase::HandleInputEvent(simulated_event);
}
void PdfViewWebPlugin::UpdateVisibility(bool visibility) {}
blink::WebInputEventResult PdfViewWebPlugin::HandleInputEvent(
const blink::WebCoalescedInputEvent& event,
ui::Cursor* cursor) {
// TODO(crbug.com/702993): The input events received by the Pepper plugin
// already have the viewport-to-DIP scale applied. The scaling done here
// should be moved into `PdfViewPluginBase::HandleInputEvent()` once the
// Pepper plugin is removed.
std::unique_ptr<blink::WebInputEvent> scaled_event =
ui::ScaleWebInputEvent(event.Event(), viewport_to_dip_scale_);
const blink::WebInputEvent& event_to_handle =
scaled_event ? *scaled_event : event.Event();
const blink::WebInputEventResult result =
PdfViewPluginBase::HandleInputEvent(event_to_handle)
? blink::WebInputEventResult::kHandledApplication
: blink::WebInputEventResult::kNotHandled;
*cursor = cursor_type();
return result;
}
void PdfViewWebPlugin::DidReceiveResponse(
const blink::WebURLResponse& response) {}
void PdfViewWebPlugin::DidReceiveData(const char* data, size_t data_length) {}
void PdfViewWebPlugin::DidFinishLoading() {}
void PdfViewWebPlugin::DidFailLoading(const blink::WebURLError& error) {}
bool PdfViewWebPlugin::SupportsPaginatedPrint() {
return true;
}
bool PdfViewWebPlugin::GetPrintPresetOptionsFromDocument(
blink::WebPrintPresetOptions* print_preset_options) {
*print_preset_options = GetPrintPresetOptions();
return true;
}
int PdfViewWebPlugin::PrintBegin(const blink::WebPrintParams& print_params) {
return PdfViewPluginBase::PrintBegin(print_params);
}
void PdfViewWebPlugin::PrintPage(int page_number, cc::PaintCanvas* canvas) {
// The entire document goes into one metafile. However, it is impossible to
// know if a call to `PrintPage()` is the last call. Thus, `PrintPage()` just
// stores the pages to print and the metafile. Eventually, the printed output
// is generated in `PrintEnd()` and copied over to the metafile.
// Every `canvas` passed to this method should have a valid `metafile`.
printing::MetafileSkia* metafile = canvas->GetPrintingMetafile();
DCHECK(metafile);
// `pages_to_print_` should be empty iff `printing_metafile_` is not set.
DCHECK_EQ(pages_to_print_.empty(), !printing_metafile_);
// The metafile should be the same across all calls for a given print job.
DCHECK(!printing_metafile_ || (printing_metafile_ == metafile));
if (!printing_metafile_)
printing_metafile_ = metafile;
pages_to_print_.push_back(page_number);
}
void PdfViewWebPlugin::PrintEnd() {
if (pages_to_print_.empty())
return;
printing_metafile_->InitFromData(PrintPages(pages_to_print_));
PdfViewPluginBase::PrintEnd();
printing_metafile_ = nullptr;
pages_to_print_.clear();
}
bool PdfViewWebPlugin::HasSelection() const {
return !selected_text_.IsEmpty();
}
blink::WebString PdfViewWebPlugin::SelectionAsText() const {
return selected_text_;
}
blink::WebString PdfViewWebPlugin::SelectionAsMarkup() const {
return selected_text_;
}
bool PdfViewWebPlugin::CanEditText() const {
return engine()->CanEditText();
}
bool PdfViewWebPlugin::HasEditableText() const {
return engine()->HasEditableText();
}
bool PdfViewWebPlugin::CanUndo() const {
return engine()->CanUndo();
}
bool PdfViewWebPlugin::CanRedo() const {
return engine()->CanRedo();
}
bool PdfViewWebPlugin::ExecuteEditCommand(const blink::WebString& name,
const blink::WebString& value) {
if (name == "SelectAll")
return SelectAll();
if (name == "Cut")
return Cut();
if (name == "Paste" || name == "PasteAndMatchStyle")
return Paste(value);
if (name == "Undo")
return Undo();
if (name == "Redo")
return Redo();
return false;
}
blink::WebURL PdfViewWebPlugin::LinkAtPosition(
const gfx::Point& /*position*/) const {
return GURL(link_under_cursor());
}
bool PdfViewWebPlugin::StartFind(const blink::WebString& search_text,
bool case_sensitive,
int identifier) {
find_identifier_ = identifier;
engine()->StartFind(search_text.Utf8(), case_sensitive);
return true;
}
void PdfViewWebPlugin::SelectFindResult(bool forward, int identifier) {
find_identifier_ = identifier;
engine()->SelectFindResult(forward);
}
void PdfViewWebPlugin::StopFind() {
find_identifier_ = -1;
engine()->StopFind();
tickmarks_.clear();
container_wrapper_->ReportFindInPageTickmarks(tickmarks_);
}
bool PdfViewWebPlugin::CanRotateView() {
return !IsPrintPreview();
}
void PdfViewWebPlugin::RotateView(blink::WebPlugin::RotationType type) {
DCHECK(CanRotateView());
switch (type) {
case blink::WebPlugin::RotationType::k90Clockwise:
engine()->RotateClockwise();
break;
case blink::WebPlugin::RotationType::k90Counterclockwise:
engine()->RotateCounterclockwise();
break;
}
}
bool PdfViewWebPlugin::ShouldDispatchImeEventsToPlugin() {
return true;
}
blink::WebTextInputType PdfViewWebPlugin::GetPluginTextInputType() {
return text_input_type_;
}
gfx::Rect PdfViewWebPlugin::GetPluginCaretBounds() {
return caret_rect_;
}
void PdfViewWebPlugin::ImeSetCompositionForPlugin(
const blink::WebString& text,
const std::vector<ui::ImeTextSpan>& /*ime_text_spans*/,
const gfx::Range& /*replacement_range*/,
int /*selection_start*/,
int /*selection_end*/) {
composition_text_ = text;
}
void PdfViewWebPlugin::ImeCommitTextForPlugin(
const blink::WebString& text,
const std::vector<ui::ImeTextSpan>& /*ime_text_spans*/,
const gfx::Range& /*replacement_range*/,
int /*relative_cursor_pos*/) {
HandleImeCommit(text);
}
void PdfViewWebPlugin::ImeFinishComposingTextForPlugin(
bool /*keep_selection*/) {
HandleImeCommit(composition_text_);
}
void PdfViewWebPlugin::UpdateCursor(ui::mojom::CursorType new_cursor_type) {
set_cursor_type(new_cursor_type);
}
void PdfViewWebPlugin::UpdateTickMarks(
const std::vector<gfx::Rect>& tickmarks) {
float inverse_scale = 1.0f / device_scale();
tickmarks_.clear();
tickmarks_.reserve(tickmarks.size());
std::transform(tickmarks.begin(), tickmarks.end(),
std::back_inserter(tickmarks_),
[inverse_scale](const gfx::Rect& t) -> gfx::Rect {
return gfx::ScaleToEnclosingRect(t, inverse_scale);
});
}
void PdfViewWebPlugin::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 (recently_sent_find_update_ && !final_result)
return;
// After stopping search and setting `find_identifier_` to -1 there still may
// be a NotifyNumberOfFindResultsChanged notification pending from engine.
// Just ignore them.
if (find_identifier_ != -1) {
container_wrapper_->ReportFindInPageMatchCount(find_identifier_, total,
final_result);
}
container_wrapper_->ReportFindInPageTickmarks(tickmarks_);
if (final_result)
return;
recently_sent_find_update_ = true;
base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
FROM_HERE,
base::BindOnce(&PdfViewWebPlugin::ResetRecentlySentFindUpdate,
weak_factory_.GetWeakPtr()),
kFindResultCooldown);
}
void PdfViewWebPlugin::NotifySelectedFindResultChanged(int current_find_index) {
if (find_identifier_ == -1 || !container_wrapper_)
return;
DCHECK_GE(current_find_index, -1);
container_wrapper_->ReportFindInPageSelection(find_identifier_,
current_find_index + 1);
}
void PdfViewWebPlugin::CaretChanged(const gfx::Rect& caret_rect) {
caret_rect_ = gfx::ScaleToEnclosingRect(
caret_rect + available_area().OffsetFromOrigin(), device_to_css_scale_);
}
void PdfViewWebPlugin::Alert(const std::string& message) {
container_wrapper_->Alert(blink::WebString::FromUTF8(message));
}
bool PdfViewWebPlugin::Confirm(const std::string& message) {
return container_wrapper_->Confirm(blink::WebString::FromUTF8(message));
}
std::string PdfViewWebPlugin::Prompt(const std::string& question,
const std::string& default_answer) {
return container_wrapper_
->Prompt(blink::WebString::FromUTF8(question),
blink::WebString::FromUTF8(default_answer))
.Utf8();
}
std::vector<PDFEngine::Client::SearchStringResult>
PdfViewWebPlugin::SearchString(const char16_t* string,
const char16_t* term,
bool case_sensitive) {
base::i18n::RepeatingStringSearch searcher(
/*find_this=*/term, /*in_this=*/string, case_sensitive);
std::vector<SearchStringResult> results;
int match_index;
int match_length;
while (searcher.NextMatchResult(match_index, match_length))
results.push_back({.start_index = match_index, .length = match_length});
return results;
}
void PdfViewWebPlugin::SetSelectedText(const std::string& selected_text) {
selected_text_ = blink::WebString::FromUTF8(selected_text);
container_wrapper_->TextSelectionChanged(
selected_text_, /*offset=*/0, gfx::Range(0, selected_text_.length()));
}
bool PdfViewWebPlugin::IsValidLink(const std::string& url) {
return base::Value(url).is_string();
}
std::unique_ptr<Graphics> PdfViewWebPlugin::CreatePaintGraphics(
const gfx::Size& size) {
// `this` must be valid when creating new graphics. `this` is guaranteed to
// outlive `graphics`; the implemented client interface owns the paint manager
// in which the graphics device exists.
auto graphics = SkiaGraphics::Create(this, size);
DCHECK(graphics);
return graphics;
}
bool PdfViewWebPlugin::BindPaintGraphics(Graphics& graphics) {
InvalidatePluginContainer();
return false;
}
void PdfViewWebPlugin::SetCaretPosition(const gfx::PointF& position) {
PdfViewPluginBase::SetCaretPosition(position);
}
void PdfViewWebPlugin::MoveRangeSelectionExtent(const gfx::PointF& extent) {
PdfViewPluginBase::MoveRangeSelectionExtent(extent);
}
void PdfViewWebPlugin::SetSelectionBounds(const gfx::PointF& base,
const gfx::PointF& extent) {
PdfViewPluginBase::SetSelectionBounds(base, extent);
}
bool PdfViewWebPlugin::IsValid() const {
return container_wrapper_ && container_wrapper_->GetFrame();
}
blink::WebURL PdfViewWebPlugin::CompleteURL(
const blink::WebString& partial_url) const {
DCHECK(IsValid());
return Container()->GetDocument().CompleteURL(partial_url);
}
net::SiteForCookies PdfViewWebPlugin::SiteForCookies() const {
DCHECK(IsValid());
return Container()->GetDocument().SiteForCookies();
}
void PdfViewWebPlugin::SetReferrerForRequest(
blink::WebURLRequest& request,
const blink::WebURL& referrer_url) {
container_wrapper_->SetReferrerForRequest(request, referrer_url);
}
std::unique_ptr<blink::WebAssociatedURLLoader>
PdfViewWebPlugin::CreateAssociatedURLLoader(
const blink::WebAssociatedURLLoaderOptions& options) {
return container_wrapper_->CreateAssociatedURLLoader(options);
}
void PdfViewWebPlugin::OnMessage(const base::Value& message) {
PdfViewPluginBase::HandleMessage(message);
}
void PdfViewWebPlugin::UpdateSnapshot(sk_sp<SkImage> snapshot) {
snapshot_ =
cc::PaintImageBuilder::WithDefault()
.set_image(std::move(snapshot), cc::PaintImage::GetNextContentId())
.set_id(cc::PaintImage::GetNextId())
.TakePaintImage();
if (!plugin_rect().IsEmpty())
InvalidatePluginContainer();
}
void PdfViewWebPlugin::UpdateScaledValues() {
total_translate_ = snapshot_translate_;
// Scale translate to compensate for use-zoom-for-DSF.
if (viewport_to_dip_scale_ != 1.0f)
total_translate_.Scale(1.0f / viewport_to_dip_scale_);
}
void PdfViewWebPlugin::UpdateScale(float scale) {
if (client_->IsUseZoomForDSFEnabled()) {
viewport_to_dip_scale_ = scale;
device_to_css_scale_ = 1.0f;
} else {
viewport_to_dip_scale_ = 1.0f;
device_to_css_scale_ = scale;
}
UpdateScaledValues();
}
void PdfViewWebPlugin::UpdateLayerTransform(float scale,
const gfx::Vector2dF& translate) {
snapshot_translate_ = translate;
snapshot_scale_ = scale;
UpdateScaledValues();
}
void PdfViewWebPlugin::EnableAccessibility() {
PdfViewPluginBase::EnableAccessibility();
}
void PdfViewWebPlugin::HandleAccessibilityAction(
const AccessibilityActionData& action_data) {
PdfViewPluginBase::HandleAccessibilityAction(action_data);
}
base::WeakPtr<PdfViewPluginBase> PdfViewWebPlugin::GetWeakPtr() {
return weak_factory_.GetWeakPtr();
}
std::unique_ptr<UrlLoader> PdfViewWebPlugin::CreateUrlLoaderInternal() {
auto loader = std::make_unique<BlinkUrlLoader>(weak_factory_.GetWeakPtr());
loader->GrantUniversalAccess();
return loader;
}
void PdfViewWebPlugin::SendMessage(base::Value message) {
post_message_sender_.Post(std::move(message));
}
void PdfViewWebPlugin::SaveAs() {
auto* service = GetPdfService();
if (!service)
return;
service->SaveUrlAs(GURL(GetURL().c_str()),
network::mojom::ReferrerPolicy::kDefault);
}
void PdfViewWebPlugin::InitImageData(const gfx::Size& size) {
mutable_image_data() = CreateN32PremulSkBitmap(gfx::SizeToSkISize(size));
}
void PdfViewWebPlugin::SetFormTextFieldInFocus(bool in_focus) {
text_input_type_ = in_focus ? blink::WebTextInputType::kWebTextInputTypeText
: blink::WebTextInputType::kWebTextInputTypeNone;
container_wrapper_->UpdateTextInputState();
}
void PdfViewWebPlugin::SetAccessibilityDocInfo(AccessibilityDocInfo doc_info) {
base::ThreadTaskRunnerHandle::Get()->PostTask(
FROM_HERE,
base::BindOnce(&PdfViewWebPlugin::OnSetAccessibilityDocInfo,
weak_factory_.GetWeakPtr(), std::move(doc_info)));
}
void PdfViewWebPlugin::SetAccessibilityPageInfo(
AccessibilityPageInfo page_info,
std::vector<AccessibilityTextRunInfo> text_runs,
std::vector<AccessibilityCharInfo> chars,
AccessibilityPageObjects page_objects) {
base::ThreadTaskRunnerHandle::Get()->PostTask(
FROM_HERE, base::BindOnce(&PdfViewWebPlugin::OnSetAccessibilityPageInfo,
weak_factory_.GetWeakPtr(),
std::move(page_info), std::move(text_runs),
std::move(chars), std::move(page_objects)));
}
void PdfViewWebPlugin::SetAccessibilityViewportInfo(
AccessibilityViewportInfo viewport_info) {
base::ThreadTaskRunnerHandle::Get()->PostTask(
FROM_HERE,
base::BindOnce(&PdfViewWebPlugin::OnSetAccessibilityViewportInfo,
weak_factory_.GetWeakPtr(), std::move(viewport_info)));
}
void PdfViewWebPlugin::SetContentRestrictions(int content_restrictions) {
auto* service = GetPdfService();
if (!service)
return;
service->UpdateContentRestrictions(content_restrictions);
}
void PdfViewWebPlugin::SetPluginCanSave(bool can_save) {
auto* service = GetPdfService();
if (!service)
return;
service->SetPluginCanSave(can_save);
}
void PdfViewWebPlugin::PluginDidStartLoading() {
auto* client = container_wrapper_->GetWebLocalFrameClient();
if (!client)
return;
client->DidStartLoading();
}
void PdfViewWebPlugin::PluginDidStopLoading() {
auto* client = container_wrapper_->GetWebLocalFrameClient();
if (!client)
return;