| // 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 <algorithm> |
| #include <memory> |
| #include <string> |
| #include <utility> |
| #include <vector> |
| |
| #include "base/bind.h" |
| #include "base/callback.h" |
| #include "base/check_op.h" |
| #include "base/containers/fixed_flat_map.h" |
| #include "base/containers/queue.h" |
| #include "base/debug/crash_logging.h" |
| #include "base/i18n/char_iterator.h" |
| #include "base/i18n/string_search.h" |
| #include "base/i18n/time_formatting.h" |
| #include "base/logging.h" |
| #include "base/memory/raw_ptr.h" |
| #include "base/no_destructor.h" |
| #include "base/notreached.h" |
| #include "base/numerics/safe_conversions.h" |
| #include "base/strings/strcat.h" |
| #include "base/strings/string_number_conversions.h" |
| #include "base/strings/string_piece.h" |
| #include "base/strings/string_split.h" |
| #include "base/strings/string_util.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/buildflags.h" |
| #include "pdf/content_restriction.h" |
| #include "pdf/document_layout.h" |
| #include "pdf/loader/result_codes.h" |
| #include "pdf/loader/url_loader.h" |
| #include "pdf/metrics_handler.h" |
| #include "pdf/mojom/pdf.mojom.h" |
| #include "pdf/paint_ready_rect.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/ui/document_properties.h" |
| #include "pdf/ui/file_name.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_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_response.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_frame.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/SkBitmap.h" |
| #include "third_party/skia/include/core/SkColor.h" |
| #include "third_party/skia/include/core/SkImage.h" |
| #include "third_party/skia/include/core/SkImageInfo.h" |
| #include "third_party/skia/include/core/SkRect.h" |
| #include "third_party/skia/include/core/SkRefCnt.h" |
| #include "third_party/skia/include/core/SkSize.h" |
| #include "ui/base/cursor/cursor.h" |
| #include "ui/base/cursor/mojom/cursor_type.mojom-shared.h" |
| #include "ui/base/text/bytes_formatting.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/size.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 { |
| |
| // The minimum zoom level allowed. |
| constexpr double kMinZoom = 0.01; |
| |
| constexpr base::TimeDelta kFindResultCooldown = base::Milliseconds(100); |
| |
| constexpr base::StringPiece kChromeExtensionHost = |
| "chrome-extension://mhjfbmdgcfjbbpaeojofohoefgiehjai/"; |
| |
| // Print Preview base URL. |
| constexpr base::StringPiece kChromePrintHost = "chrome://print/"; |
| |
| // Untrusted Print Preview base URL. |
| constexpr base::StringPiece kChromeUntrustedPrintHost = |
| "chrome-untrusted://print/"; |
| |
| // 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; |
| |
| // Enumeration of pinch states. |
| // This should match PinchPhase enum in |
| // chrome/browser/resources/pdf/viewport.ts. |
| enum class PinchPhase { |
| kNone = 0, |
| kStart = 1, |
| kUpdateZoomOut = 2, |
| kUpdateZoomIn = 3, |
| kEnd = 4, |
| }; |
| |
| // 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_); |
| }; |
| |
| base::Value::Dict DictFromRect(const gfx::Rect& rect) { |
| base::Value::Dict dict; |
| dict.Set("x", rect.x()); |
| dict.Set("y", rect.y()); |
| dict.Set("width", rect.width()); |
| dict.Set("height", rect.height()); |
| return dict; |
| } |
| |
| bool IsPrintPreviewUrl(base::StringPiece url) { |
| return base::StartsWith(url, kChromeUntrustedPrintHost); |
| } |
| |
| int ExtractPrintPreviewPageIndex(base::StringPiece src_url) { |
| // Sample `src_url` format: chrome-untrusted://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(kChromeUntrustedPrintHost.size()), |
| "/", 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 IsPreviewingPDF(int print_preview_page_count) { |
| return print_preview_page_count == 0; |
| } |
| |
| } // namespace |
| |
| std::unique_ptr<PDFiumEngine> PdfViewWebPlugin::Client::CreateEngine( |
| PDFEngine::Client* client, |
| PDFiumFormFiller::ScriptOption script_option) { |
| return std::make_unique<PDFiumEngine>(client, script_option); |
| } |
| |
| std::unique_ptr<PdfAccessibilityDataHandler> |
| PdfViewWebPlugin::Client::CreateAccessibilityDataHandler( |
| PdfAccessibilityActionHandler* action_handler) { |
| return nullptr; |
| } |
| |
| PdfViewWebPlugin::PdfViewWebPlugin( |
| std::unique_ptr<Client> client, |
| mojo::AssociatedRemote<pdf::mojom::PdfService> pdf_service, |
| const blink::WebPluginParams& params) |
| : client_(std::move(client)), |
| pdf_service_(std::move(pdf_service)), |
| initial_params_(params), |
| pdf_accessibility_data_handler_( |
| client_->CreateAccessibilityDataHandler(this)) { |
| DCHECK(pdf_service_); |
| pdf_service_->SetListener(listener_receiver_.BindNewPipeAndPassRemote()); |
| } |
| |
| PdfViewWebPlugin::~PdfViewWebPlugin() = default; |
| |
| std::unique_ptr<PDFiumEngine> PdfViewWebPlugin::CreateEngine( |
| PDFEngine::Client* client, |
| PDFiumFormFiller::ScriptOption script_option) { |
| return client_->CreateEngine(client, script_option); |
| } |
| |
| // TODO(crbug.com/1302059): Delete after merging with `PdfViewPluginBase`. |
| const PDFiumEngine* PdfViewWebPlugin::engine() const { |
| return engine_.get(); |
| } |
| |
| // TODO(crbug.com/1302059): Delete after merging with `PdfViewPluginBase`. |
| PDFiumEngine* PdfViewWebPlugin::engine() { |
| return engine_.get(); |
| } |
| |
| bool PdfViewWebPlugin::Initialize(blink::WebPluginContainer* container) { |
| DCHECK(container); |
| client_->SetPluginContainer(container); |
| |
| DCHECK_EQ(container->Plugin(), this); |
| return InitializeCommon(); |
| } |
| |
| bool PdfViewWebPlugin::InitializeForTesting() { |
| return InitializeCommon(); |
| } |
| |
| bool PdfViewWebPlugin::InitializeCommon() { |
| // Allow the plugin to handle touch events. |
| client_->RequestTouchEventType( |
| blink::WebPluginContainer::kTouchEventRequestTypeRaw); |
| |
| // Allow the plugin to handle find requests. |
| client_->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(); |
| |
| // 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. |
| // |
| // This is enforced before launching the plugin process (see |
| // `ChromeContentBrowserClient::ShouldAllowPluginCreation()`), so below we |
| // just do a CHECK as a defense-in-depth. |
| const std::string& embedder_origin = client_->GetEmbedderOriginString(); |
| is_print_preview_ = (embedder_origin == kChromePrintHost); |
| CHECK(IsPrintPreview() || embedder_origin == kChromeExtensionHost); |
| |
| full_frame_ = params->full_frame; |
| background_color_ = params->background_color; |
| |
| engine_ = CreateEngine(this, params->script_option); |
| DCHECK(engine_); |
| |
| SendSetSmoothScrolling(); |
| |
| // Skip the remaining initialization when in Print Preview mode. Loading will |
| // continue after the plugin receives a "resetPrintPreviewMode" message. |
| if (IsPrintPreview()) |
| return true; |
| |
| set_last_progress_sent(0); |
| LoadUrl(params->src_url, base::BindOnce(&PdfViewWebPlugin::DidOpen, |
| weak_factory_.GetWeakPtr())); |
| url_ = params->original_url; |
| |
| // Not all edits go through the PDF plugin's form filler. The plugin instance |
| // can be restarted by exiting annotation mode on ChromeOS, which can set the |
| // document to an edited state. |
| edit_mode_ = params->has_edits; |
| #if !BUILDFLAG(ENABLE_INK) |
| DCHECK(!edit_mode_); |
| #endif // !BUILDFLAG(ENABLE_INK) |
| |
| metrics_handler_ = std::make_unique<MetricsHandler>(); |
| return true; |
| } |
| |
| void PdfViewWebPlugin::SendSetSmoothScrolling() { |
| base::Value::Dict message; |
| message.Set("type", "setSmoothScrolling"); |
| message.Set("smoothScrolling", |
| blink::Platform::Current()->IsScrollAnimatorEnabled()); |
| SendMessage(std::move(message)); |
| } |
| |
| void PdfViewWebPlugin::DidOpen(std::unique_ptr<UrlLoader> loader, |
| int32_t result) { |
| if (result == kSuccess) { |
| if (!engine_->HandleDocumentLoad(std::move(loader), url_)) { |
| set_document_load_state(DocumentLoadState::kLoading); |
| DocumentLoadFailed(); |
| } |
| } else if (result != kErrorAborted) { |
| DocumentLoadFailed(); |
| } |
| } |
| |
| void PdfViewWebPlugin::Destroy() { |
| if (client_->PluginContainer()) { |
| // Explicitly destroy the PDFEngine during destruction as it may call back |
| // into this object. |
| preview_engine_.reset(); |
| engine_.reset(); |
| PerProcessInitializer::GetInstance().Release(); |
| client_->SetPluginContainer(nullptr); |
| } |
| |
| delete this; |
| } |
| |
| blink::WebPluginContainer* PdfViewWebPlugin::Container() const { |
| return client_->PluginContainer(); |
| } |
| |
| 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::PrepareForFirstPaint( |
| std::vector<PaintReadyRect>& ready) { |
| if (!first_paint_) |
| return; |
| |
| // Fill the image data buffer with the background color. |
| first_paint_ = false; |
| image_data().eraseColor(background_color_); |
| ready.emplace_back(gfx::SkIRectToRect(image_data().bounds()), |
| image_data().asImage(), /*flush_now=*/true); |
| } |
| |
| 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, client_->DeviceScaleFactor()); |
| |
| gfx::PointF scroll_position = client_->GetScrollPosition(); |
| // Convert back to CSS pixels. |
| scroll_position.Scale(1.0f / device_scale_); |
| UpdateScroll(scroll_position); |
| } |
| |
| void PdfViewWebPlugin::UpdateScroll(const gfx::PointF& scroll_position) { |
| if (stop_scrolling_) |
| return; |
| |
| float max_x = std::max(document_size().width() * static_cast<float>(zoom()) - |
| plugin_dip_size_.width(), |
| 0.0f); |
| float max_y = std::max(document_size().height() * static_cast<float>(zoom()) - |
| plugin_dip_size_.height(), |
| 0.0f); |
| |
| gfx::PointF scaled_scroll_position( |
| base::clamp(scroll_position.x(), 0.0f, max_x), |
| base::clamp(scroll_position.y(), 0.0f, max_y)); |
| scaled_scroll_position.Scale(device_scale_); |
| |
| engine_->ScrolledToXPosition(scaled_scroll_position.x()); |
| engine_->ScrolledToYPosition(scaled_scroll_position.y()); |
| } |
| |
| void PdfViewWebPlugin::UpdateFocus(bool focused, |
| blink::mojom::FocusType focus_type) { |
| if (has_focus_ != focused) { |
| engine_->UpdateFocus(focused); |
| client_->UpdateTextInputState(); |
| client_->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/1302059): 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(); |
| client_->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::ProposeDocumentLayout(const DocumentLayout& layout) { |
| base::Value::Dict message; |
| message.Set("type", "documentDimensions"); |
| message.Set("width", layout.size().width()); |
| message.Set("height", layout.size().height()); |
| message.Set("layoutOptions", layout.options().ToValue()); |
| base::Value::List page_dimensions; |
| for (size_t i = 0; i < layout.page_count(); ++i) |
| page_dimensions.Append(DictFromRect(layout.page_rect(i))); |
| message.Set("pageDimensions", std::move(page_dimensions)); |
| SendMessage(std::move(message)); |
| |
| // Reload the accessibility tree on layout changes because the relative page |
| // bounds are no longer valid. |
| if (layout.dirty() && accessibility_state() == AccessibilityState::kLoaded) |
| LoadAccessibility(); |
| } |
| |
| void PdfViewWebPlugin::UpdateCursor(ui::mojom::CursorType new_cursor_type) { |
| 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) { |
| client_->ReportFindInPageMatchCount(find_identifier_, total, final_result); |
| } |
| |
| client_->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 || !client_->PluginContainer()) |
| return; |
| |
| DCHECK_GE(current_find_index, -1); |
| client_->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) { |
| client_->Alert(blink::WebString::FromUTF8(message)); |
| } |
| |
| bool PdfViewWebPlugin::Confirm(const std::string& message) { |
| return client_->Confirm(blink::WebString::FromUTF8(message)); |
| } |
| |
| std::string PdfViewWebPlugin::Prompt(const std::string& question, |
| const std::string& default_answer) { |
| return client_ |
| ->Prompt(blink::WebString::FromUTF8(question), |
| blink::WebString::FromUTF8(default_answer)) |
| .Utf8(); |
| } |
| |
| std::string PdfViewWebPlugin::GetURL() { |
| return url_; |
| } |
| |
| void PdfViewWebPlugin::LoadUrl(base::StringPiece url, |
| LoadUrlCallback callback) { |
| UrlRequest request; |
| request.url = std::string(url); |
| request.method = "GET"; |
| request.ignore_redirects = true; |
| |
| auto loader = std::make_unique<UrlLoader>(weak_factory_.GetWeakPtr()); |
| UrlLoader* raw_loader = loader.get(); |
| raw_loader->Open(request, |
| base::BindOnce(std::move(callback), std::move(loader))); |
| } |
| |
| void PdfViewWebPlugin::SubmitForm(const std::string& url, |
| const void* data, |
| int length) { |
| // `url` might be a relative URL. Resolve it against the document's URL. |
| // TODO(crbug.com/1322928): Probably redundant with `Client::CompleteURL()`. |
| GURL resolved_url = GURL(url_).Resolve(url); |
| if (!resolved_url.is_valid()) |
| return; |
| |
| UrlRequest request; |
| request.url = resolved_url.spec(); |
| request.method = "POST"; |
| request.body.assign(static_cast<const char*>(data), length); |
| |
| form_loader_ = std::make_unique<UrlLoader>(weak_factory_.GetWeakPtr()); |
| form_loader_->Open(request, base::BindOnce(&PdfViewWebPlugin::DidFormOpen, |
| weak_factory_.GetWeakPtr())); |
| } |
| |
| void PdfViewWebPlugin::DidFormOpen(int32_t result) { |
| // TODO(crbug.com/719344): Process response. |
| LOG_IF(ERROR, result != kSuccess) << "DidFormOpen failed: " << result; |
| form_loader_.reset(); |
| } |
| |
| std::unique_ptr<UrlLoader> PdfViewWebPlugin::CreateUrlLoader() { |
| if (full_frame_) { |
| DidStartLoading(); |
| |
| // Disable save and print until the document is fully loaded, since they |
| // would generate an incomplete document. This needs to be done each time |
| // DidStartLoading() is called because that resets the content restrictions. |
| SetContentRestrictions(kContentRestrictionSave | kContentRestrictionPrint); |
| } |
| |
| return std::make_unique<UrlLoader>(weak_factory_.GetWeakPtr()); |
| } |
| |
| 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::DocumentHasUnsupportedFeature( |
| const std::string& feature) { |
| DCHECK(!feature.empty()); |
| std::string metric = base::StrCat({"PDF_Unsupported_", feature}); |
| if (unsupported_features_reported_.insert(metric).second) |
| client_->RecordComputedAction(metric); |
| |
| if (!full_frame() || notified_browser_about_unsupported_feature_) |
| return; |
| |
| notified_browser_about_unsupported_feature_ = true; |
| pdf_service_->HasUnsupportedFeature(); |
| } |
| |
| bool PdfViewWebPlugin::IsPrintPreview() const { |
| return is_print_preview_; |
| } |
| |
| SkColor PdfViewWebPlugin::GetBackgroundColor() const { |
| return background_color_; |
| } |
| |
| void PdfViewWebPlugin::EnteredEditMode() { |
| edit_mode_ = true; |
| pdf_service_->SetPluginCanSave(true); |
| |
| base::Value::Dict message; |
| message.Set("type", "setIsEditing"); |
| SendMessage(std::move(message)); |
| } |
| |
| void PdfViewWebPlugin::SetSelectedText(const std::string& selected_text) { |
| selected_text_ = blink::WebString::FromUTF8(selected_text); |
| client_->TextSelectionChanged(selected_text_, /*offset=*/0, |
| gfx::Range(0, selected_text_.length())); |
| } |
| |
| bool PdfViewWebPlugin::IsValidLink(const std::string& url) { |
| return base::Value(url).is_string(); |
| } |
| |
| 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 client_->HasFrame(); |
| } |
| |
| blink::WebURL PdfViewWebPlugin::CompleteURL( |
| const blink::WebString& partial_url) const { |
| DCHECK(IsValid()); |
| return client_->CompleteURL(partial_url); |
| } |
| |
| net::SiteForCookies PdfViewWebPlugin::SiteForCookies() const { |
| DCHECK(IsValid()); |
| return client_->SiteForCookies(); |
| } |
| |
| void PdfViewWebPlugin::SetReferrerForRequest( |
| blink::WebURLRequest& request, |
| const blink::WebURL& referrer_url) { |
| client_->SetReferrerForRequest(request, referrer_url); |
| } |
| |
| std::unique_ptr<blink::WebAssociatedURLLoader> |
| PdfViewWebPlugin::CreateAssociatedURLLoader( |
| const blink::WebAssociatedURLLoaderOptions& options) { |
| return client_->CreateAssociatedURLLoader(options); |
| } |
| |
| void PdfViewWebPlugin::OnMessage(const base::Value::Dict& message) { |
| using MessageHandler = void (PdfViewWebPlugin::*)(const base::Value::Dict&); |
| |
| // Settings this as const instead of constexpr to workaround a bug |
| // in GCC, that will try to reinterpret_cast the method pointers. |
| // https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105996 |
| // TODO(crbug.com/1302059): make it constexpr again when we get rid |
| // of PdfViewPluginBase |
| static const auto kMessageHandlers = |
| base::MakeFixedFlatMap<base::StringPiece, MessageHandler>({ |
| {"displayAnnotations", |
| &PdfViewWebPlugin::HandleDisplayAnnotationsMessage}, |
| {"getNamedDestination", |
| &PdfViewWebPlugin::HandleGetNamedDestinationMessage}, |
| {"getPasswordComplete", |
| &PdfViewWebPlugin::HandleGetPasswordCompleteMessage}, |
| {"getSelectedText", &PdfViewWebPlugin::HandleGetSelectedTextMessage}, |
| {"getThumbnail", &PdfViewWebPlugin::HandleGetThumbnailMessage}, |
| {"print", &PdfViewWebPlugin::HandlePrintMessage}, |
| {"loadPreviewPage", &PdfViewWebPlugin::HandleLoadPreviewPageMessage}, |
| {"resetPrintPreviewMode", |
| &PdfViewWebPlugin::HandleResetPrintPreviewModeMessage}, |
| {"rotateClockwise", &PdfViewWebPlugin::HandleRotateClockwiseMessage}, |
| {"rotateCounterclockwise", |
| &PdfViewWebPlugin::HandleRotateCounterclockwiseMessage}, |
| {"save", &PdfViewWebPlugin::HandleSaveMessage}, |
| {"saveAttachment", &PdfViewWebPlugin::HandleSaveAttachmentMessage}, |
| {"selectAll", &PdfViewWebPlugin::HandleSelectAllMessage}, |
| {"setBackgroundColor", |
| &PdfViewWebPlugin::HandleSetBackgroundColorMessage}, |
| {"setPresentationMode", |
| &PdfViewWebPlugin::HandleSetPresentationModeMessage}, |
| {"setTwoUpView", &PdfViewWebPlugin::HandleSetTwoUpViewMessage}, |
| {"stopScrolling", &PdfViewWebPlugin::HandleStopScrollingMessage}, |
| {"viewport", &PdfViewWebPlugin::HandleViewportMessage}, |
| }); |
| |
| MessageHandler handler = kMessageHandlers.at(*message.FindString("type")); |
| (this->*handler)(message); |
| } |
| |
| void PdfViewWebPlugin::HandleSaveMessage(const base::Value::Dict& message) { |
| const std::string& token = *message.FindString("token"); |
| int request_type = message.FindInt("saveRequestType").value(); |
| DCHECK_GE(request_type, static_cast<int>(SaveRequestType::kAnnotation)); |
| DCHECK_LE(request_type, static_cast<int>(SaveRequestType::kEdited)); |
| |
| switch (static_cast<SaveRequestType>(request_type)) { |
| case SaveRequestType::kAnnotation: |
| #if BUILDFLAG(ENABLE_INK) |
| // In annotation mode, assume the user will make edits and prefer saving |
| // using the plugin data. |
| pdf_service_->SetPluginCanSave(true); |
| SaveToBuffer(token); |
| #else |
| NOTREACHED(); |
| #endif // BUILDFLAG(ENABLE_INK) |
| break; |
| case SaveRequestType::kOriginal: |
| pdf_service_->SetPluginCanSave(false); |
| SaveToFile(token); |
| pdf_service_->SetPluginCanSave(edit_mode_); |
| break; |
| case SaveRequestType::kEdited: |
| SaveToBuffer(token); |
| break; |
| } |
| } |
| |
| void PdfViewWebPlugin::SaveToBuffer(const std::string& token) { |
| engine_->KillFormFocus(); |
| |
| base::Value::Dict message; |
| message.Set("type", "saveData"); |
| message.Set("token", token); |
| message.Set("fileName", GetFileNameForSaveFromUrl(url_)); |
| |
| // Expose `edit_mode_` state for integration testing. |
| message.Set("editModeForTesting", edit_mode_); |
| |
| base::Value data_to_save; |
| if (edit_mode_) { |
| base::Value::BlobStorage data = engine_->GetSaveData(); |
| if (IsSaveDataSizeValid(data.size())) |
| data_to_save = base::Value(std::move(data)); |
| } else { |
| #if BUILDFLAG(ENABLE_INK) |
| uint32_t length = engine_->GetLoadedByteSize(); |
| if (IsSaveDataSizeValid(length)) { |
| base::Value::BlobStorage data(length); |
| if (engine_->ReadLoadedBytes(length, data.data())) |
| data_to_save = base::Value(std::move(data)); |
| } |
| #else |
| NOTREACHED(); |
| #endif // BUILDFLAG(ENABLE_INK) |
| } |
| |
| message.Set("dataToSave", std::move(data_to_save)); |
| SendMessage(std::move(message)); |
| } |
| |
| void PdfViewWebPlugin::SaveToFile(const std::string& token) { |
| engine_->KillFormFocus(); |
| |
| base::Value::Dict message; |
| message.Set("type", "consumeSaveToken"); |
| message.Set("token", token); |
| SendMessage(std::move(message)); |
| |
| // TODO(crbug.com/1302059): Is there a good reason to null-terminate here? |
| pdf_service_->SaveUrlAs(GURL(url_.c_str()), |
| network::mojom::ReferrerPolicy::kDefault); |
| } |
| |
| void PdfViewWebPlugin::HandleSetBackgroundColorMessage( |
| const base::Value::Dict& message) { |
| background_color_ = |
| base::checked_cast<SkColor>(message.FindDouble("color").value()); |
| } |
| |
| void PdfViewWebPlugin::InvalidatePluginContainer() { |
| client_->Invalidate(); |
| } |
| |
| 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::HandleStopScrollingMessage( |
| const base::Value::Dict& /*message*/) { |
| stop_scrolling_ = true; |
| } |
| |
| void PdfViewWebPlugin::HandleViewportMessage(const base::Value::Dict& message) { |
| const base::Value::Dict* layout_options_value = |
| message.FindDict("layoutOptions"); |
| if (layout_options_value) { |
| DocumentLayout::Options layout_options; |
| layout_options.FromValue(*layout_options_value); |
| |
| ui_direction_ = layout_options.direction(); |
| |
| // TODO(crbug.com/1013800): Eliminate need to get document size from here. |
| set_document_size(engine_->ApplyDocumentLayout(layout_options)); |
| |
| OnGeometryChanged(zoom(), device_scale_); |
| if (!document_size().IsEmpty()) |
| paint_manager().InvalidateRect(gfx::Rect(plugin_rect_.size())); |
| |
| // Send 100% loading progress only after initial layout negotiated. |
| if (last_progress_sent() < 100 && |
| document_load_state() == DocumentLoadState::kComplete) { |
| SendLoadingProgress(/*percentage=*/100); |
| } |
| } |
| |
| gfx::Vector2dF scroll_offset(*message.FindDouble("xOffset"), |
| *message.FindDouble("yOffset")); |
| double new_zoom = *message.FindDouble("zoom"); |
| const PinchPhase pinch_phase = |
| static_cast<PinchPhase>(*message.FindInt("pinchPhase")); |
| |
| received_viewport_message_ = true; |
| stop_scrolling_ = false; |
| const double zoom_ratio = new_zoom / zoom(); |
| |
| if (pinch_phase == PinchPhase::kStart) { |
| 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 == PinchPhase::kUpdateZoomIn || |
| (pinch_phase == PinchPhase::kUpdateZoomOut && zoom_ratio > 1.0)) { |
| // Get the coordinates of the center of the pinch gesture. |
| const double pinch_x = *message.FindDouble("pinchX"); |
| const double pinch_y = *message.FindDouble("pinchY"); |
| gfx::Point pinch_center(pinch_x, pinch_y); |
| |
| // Get the pinch vector which represents the panning caused by the change in |
| // pinch center between the start and the end of the gesture. |
| const double pinch_vector_x = *message.FindDouble("pinchVectorX"); |
| const double pinch_vector_y = *message.FindDouble("pinchVectorY"); |
| gfx::Vector2d pinch_vector = |
| gfx::Vector2d(pinch_vector_x * zoom_ratio, pinch_vector_y * zoom_ratio); |
| |
| gfx::Vector2d 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. |
| gfx::Vector2d paint_offset; |
| |
| if (plugin_rect_.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 = gfx::Vector2d(0, (1 - zoom_ratio) * pinch_center.y()); |
| scroll_delta = gfx::Vector2d( |
| 0, |
| (scroll_offset.y() - scroll_offset_at_last_raster_.y() * zoom_ratio)); |
| |
| pinch_vector = gfx::Vector2d(); |
| last_bitmap_smaller_ = true; |
| } else if (last_bitmap_smaller_) { |
| // When the document width covers the display area's width, we will anchor |
| // the scroll bars disregarding where the actual pinch certer is. |
| pinch_center = gfx::Point((plugin_rect_.width() / device_scale_) / 2, |
| (plugin_rect_.height() / device_scale_) / 2); |
| const double zoom_when_doc_covers_plugin_width = |
| zoom() * plugin_rect_.width() / GetDocumentPixelWidth(); |
| paint_offset = gfx::Vector2d( |
| (1 - new_zoom / zoom_when_doc_covers_plugin_width) * pinch_center.x(), |
| (1 - zoom_ratio) * pinch_center.y()); |
| pinch_vector = gfx::Vector2d(); |
| scroll_delta = gfx::Vector2d( |
| (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 == PinchPhase::kUpdateZoomOut || |
| pinch_phase == PinchPhase::kEnd) { |
| // 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 the scroll |
| // offset for the last raster, in case the user continues the gesture by |
| // zooming in. |
| scroll_offset_at_last_raster_ = scroll_offset; |
| } |
| |
| // Bound the input parameters. |
| new_zoom = std::max(kMinZoom, new_zoom); |
| DCHECK(message.FindBool("userInitiated").has_value()); |
| |
| SetZoom(new_zoom); |
| UpdateScroll(GetScrollPositionFromOffset(scroll_offset)); |
| } |
| |
| void PdfViewWebPlugin::UpdateScaledValues() { |
| total_translate_ = snapshot_translate_; |
| |
| if (viewport_to_dip_scale_ != 1.0f) |
| total_translate_.Scale(1.0f / viewport_to_dip_scale_); |
| } |
| |
| void PdfViewWebPlugin::UpdateScale(float scale) { |
| if (scale <= 0.0f) { |
| NOTREACHED(); |
| return; |
| } |
| |
| viewport_to_dip_scale_ = scale; |
| device_to_css_scale_ = 1.0f; |
| 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(); |
| } |
| |
| void PdfViewWebPlugin::OnPrintPreviewLoaded() { |
| // Scroll location is retained across document loads in Print Preview, so |
| // there's no need to override the scroll position by scrolling again. |
| if (IsPreviewingPDF(print_preview_page_count_)) { |
| SendPrintPreviewLoadedNotification(); |
| } else { |
| DCHECK_EQ(0, print_preview_loaded_page_count_); |
| print_preview_loaded_page_count_ = 1; |
| engine_->AppendBlankPages(print_preview_page_count_); |
| LoadNextPreviewPage(); |
| } |
| |
| OnGeometryChanged(0, 0); |
| if (!document_size().IsEmpty()) |
| paint_manager().InvalidateRect(gfx::Rect(plugin_rect_.size())); |
| } |
| |
| void PdfViewWebPlugin::OnDocumentLoadComplete() { |
| RecordDocumentMetrics(); |
| |
| SendAttachments(); |
| SendBookmarks(); |
| SendMetadata(); |
| } |
| |
| void PdfViewWebPlugin::SendMessage(base::Value::Dict message) { |
| client_->PostMessage(std::move(message)); |
| } |
| |
| void PdfViewWebPlugin::SetFormTextFieldInFocus(bool in_focus) { |
| text_input_type_ = in_focus ? blink::WebTextInputType::kWebTextInputTypeText |
| : blink::WebTextInputType::kWebTextInputTypeNone; |
| client_->UpdateTextInputState(); |
| } |
| |
| void PdfViewWebPlugin::SetAccessibilityDocInfo(AccessibilityDocInfo doc_info) { |
| pdf_accessibility_data_handler_->SetAccessibilityDocInfo(std::move(doc_info)); |
| } |
| |
| void PdfViewWebPlugin::SetAccessibilityPageInfo( |
| AccessibilityPageInfo page_info, |
| std::vector<AccessibilityTextRunInfo> text_runs, |
| std::vector<AccessibilityCharInfo> chars, |
| AccessibilityPageObjects page_objects) { |
| pdf_accessibility_data_handler_->SetAccessibilityPageInfo( |
| std::move(page_info), std::move(text_runs), std::move(chars), |
| std::move(page_objects)); |
| } |
| |
| void PdfViewWebPlugin::SetAccessibilityViewportInfo( |
| AccessibilityViewportInfo viewport_info) { |
| pdf_accessibility_data_handler_->SetAccessibilityViewportInfo( |
| std::move(viewport_info)); |
| } |
| |
| void PdfViewWebPlugin::SetContentRestrictions(int content_restrictions) { |
| pdf_service_->UpdateContentRestrictions(content_restrictions); |
| } |
| |
| void PdfViewWebPlugin::DidStartLoading() { |
| if (did_call_start_loading_) |
| return; |
| |
| client_->DidStartLoading(); |
| did_call_start_loading_ = true; |
| } |
| |
| void PdfViewWebPlugin::DidStopLoading() { |
| if (!did_call_start_loading_) |
| return; |
| |
| client_->DidStopLoading(); |
| did_call_start_loading_ = false; |
| } |
| |
| void PdfViewWebPlugin::InvokePrintDialog() { |
| base::ThreadTaskRunnerHandle::Get()->PostTask( |
| FROM_HERE, base::BindOnce(&PdfViewWebPlugin::OnInvokePrintDialog, |
| weak_factory_.GetWeakPtr())); |
| } |
| |
| void PdfViewWebPlugin::NotifySelectionChanged(const gfx::PointF& left, |
| int left_height, |
| const gfx::PointF& right, |
| int right_height) { |
| pdf_service_->SelectionChanged(left, left_height, right, right_height); |
| } |
| |
| // TODO(crbug.com/1302059): Delete after merging with `PdfViewPluginBase`. |
| void PdfViewWebPlugin::UserMetricsRecordAction(const std::string& action) { |
| client_->RecordComputedAction(action); |
| } |
| |
| // TODO(crbug.com/1302059): Delete after merging with `PdfViewPluginBase`. |
| bool PdfViewWebPlugin::full_frame() const { |
| return full_frame_; |
| } |
| |
| // TODO(crbug.com/1302059): Delete after merging with `PdfViewPluginBase`. |
| const gfx::Size& PdfViewWebPlugin::plugin_dip_size() const { |
| return plugin_dip_size_; |
| } |
| |
| // TODO(crbug.com/1302059): Delete after merging with `PdfViewPluginBase`. |
| const gfx::Rect& PdfViewWebPlugin::plugin_rect() const { |
| return plugin_rect_; |
| } |
| |
| // TODO(crbug.com/1302059): Delete after merging with `PdfViewPluginBase`. |
| float PdfViewWebPlugin::device_scale() const { |
| return device_scale_; |
| } |
| |
| // TODO(crbug.com/1302059): Delete after merging with `PdfViewPluginBase`. |
| bool PdfViewWebPlugin::needs_reraster() const { |
| return needs_reraster_; |
| } |
| |
| // TODO(crbug.com/1302059): Delete after merging with `PdfViewPluginBase`. |
| base::i18n::TextDirection PdfViewWebPlugin::ui_direction() const { |
| return ui_direction_; |
| } |
| |
| // TODO(crbug.com/1302059): Delete after merging with `PdfViewPluginBase`. |
| bool PdfViewWebPlugin::received_viewport_message() const { |
| return received_viewport_message_; |
| } |
| |
| void PdfViewWebPlugin::OnViewportChanged( |
| const gfx::Rect& new_plugin_rect_in_css_pixel, |
| float new_device_scale) { |
| DCHECK_GT(new_device_scale, 0.0f); |
| |
| css_plugin_rect_ = new_plugin_rect_in_css_pixel; |
| |
| if (new_device_scale == device_scale_ && |
| new_plugin_rect_in_css_pixel == plugin_rect_) { |
| return; |
| } |
| |
| const float old_device_scale = device_scale_; |
| device_scale_ = new_device_scale; |
| plugin_rect_ = new_plugin_rect_in_css_pixel; |
| |
| // TODO(crbug.com/1250173): We should try to avoid the downscaling in this |
| // calculation, perhaps by migrating off `plugin_dip_size_`. |
| plugin_dip_size_ = gfx::ScaleToEnclosingRect(new_plugin_rect_in_css_pixel, |
| 1.0f / new_device_scale) |
| .size(); |
| |
| paint_manager().SetSize(plugin_rect_.size(), device_scale_); |
| |
| // Initialize the image data buffer if the context size changes. |
| const gfx::Size old_image_size = |
| gfx::SkISizeToSize(image_data().dimensions()); |
| const gfx::Size new_image_size = |
| PaintManager::GetNewContextSize(old_image_size, plugin_rect_.size()); |
| if (new_image_size != old_image_size) { |
| image_data().allocPixels( |
| SkImageInfo::MakeN32Premul(gfx::SizeToSkISize(new_image_size))); |
| first_paint_ = true; |
| } |
| |
| // Skip updating the geometry if the new image data buffer is empty. |
| if (image_data().drawsNothing()) |
| return; |
| |
| OnGeometryChanged(zoom(), old_device_scale); |
| } |
| |
| bool PdfViewWebPlugin::SelectAll() { |
| if (!CanEditText()) |
| return false; |
| |
| engine_->SelectAll(); |
| return true; |
| } |
| |
| bool PdfViewWebPlugin::Cut() { |
| if (!HasSelection() || !CanEditText()) |
| return false; |
| |
| engine_->ReplaceSelection(""); |
| return true; |
| } |
| |
| bool PdfViewWebPlugin::Paste(const blink::WebString& value) { |
| if (!CanEditText()) |
| return false; |
| |
| engine_->ReplaceSelection(value.Utf8()); |
| return true; |
| } |
| |
| bool PdfViewWebPlugin::Undo() { |
| if (!CanUndo()) |
| return false; |
| |
| engine_->Undo(); |
| return true; |
| } |
| |
| bool PdfViewWebPlugin::Redo() { |
| if (!CanRedo()) |
| return false; |
| |
| engine_->Redo(); |
| return true; |
| } |
| |
| void PdfViewWebPlugin::HandleImeCommit(const blink::WebString& text) { |
| if (text.IsEmpty()) |
| return; |
| |
| std::u16string text16 = text.Utf16(); |
| composition_text_.Reset(); |
| |
| size_t i = 0; |
| for (base::i18n::UTF16CharIterator iterator(text16); iterator.Advance();) { |
| blink::WebKeyboardEvent char_event(blink::WebInputEvent::Type::kChar, |
| blink::WebInputEvent::kNoModifiers, |
| ui::EventTimeForNow()); |
| char_event.windows_key_code = text16[i]; |
| char_event.native_key_code = text16[i]; |
| |
| for (const size_t char_start = i; i < iterator.array_pos(); ++i) { |
| char_event.text[i - char_start] = text16[i]; |
| char_event.unmodified_text[i - char_start] = text16[i]; |
| } |
| |
| blink::WebCoalescedInputEvent input_event(char_event, ui::LatencyInfo()); |
| ui::Cursor dummy_cursor_info; |
| HandleInputEvent(input_event, &dummy_cursor_info); |
| } |
| } |
| |
| void PdfViewWebPlugin::OnInvokePrintDialog() { |
| client_->Print(); |
| } |
| |
| void PdfViewWebPlugin::ResetRecentlySentFindUpdate() { |
| recently_sent_find_update_ = false; |
| } |
| |
| void PdfViewWebPlugin::RecordDocumentMetrics() { |
| if (!metrics_handler_) |
| return; |
| |
| metrics_handler_->RecordDocumentMetrics(engine_->GetDocumentMetadata()); |
| metrics_handler_->RecordAttachmentTypes( |
| engine_->GetDocumentAttachmentInfoList()); |
| } |
| |
| void PdfViewWebPlugin::SendAttachments() { |
| const std::vector<DocumentAttachmentInfo>& attachment_infos = |
| engine_->GetDocumentAttachmentInfoList(); |
| if (attachment_infos.empty()) |
| return; |
| |
| base::Value::List attachments; |
| for (const DocumentAttachmentInfo& attachment_info : attachment_infos) { |
| // Send `size` as -1 to indicate that the attachment is too large to be |
| // downloaded. |
| const int size = attachment_info.size_bytes <= kMaximumSavedFileSize |
| ? static_cast<int>(attachment_info.size_bytes) |
| : -1; |
| |
| base::Value::Dict attachment; |
| attachment.Set("name", attachment_info.name); |
| attachment.Set("size", size); |
| attachment.Set("readable", attachment_info.is_readable); |
| attachments.Append(std::move(attachment)); |
| } |
| |
| base::Value::Dict message; |
| message.Set("type", "attachments"); |
| message.Set("attachmentsData", std::move(attachments)); |
| SendMessage(std::move(message)); |
| } |
| |
| void PdfViewWebPlugin::SendBookmarks() { |
| base::Value::List bookmarks = engine_->GetBookmarks(); |
| if (bookmarks.empty()) |
| return; |
| |
| base::Value::Dict message; |
| message.Set("type", "bookmarks"); |
| message.Set("bookmarksData", std::move(bookmarks)); |
| SendMessage(std::move(message)); |
| } |
| |
| void PdfViewWebPlugin::SendMetadata() { |
| base::Value::Dict metadata; |
| const DocumentMetadata& document_metadata = engine_->GetDocumentMetadata(); |
| |
| const std::string version = FormatPdfVersion(document_metadata.version); |
| if (!version.empty()) |
| metadata.Set("version", version); |
| |
| metadata.Set("fileSize", ui::FormatBytes(document_metadata.size_bytes)); |
| |
| metadata.Set("linearized", document_metadata.linearized); |
| |
| if (!document_metadata.title.empty()) |
| metadata.Set("title", document_metadata.title); |
| |
| if (!document_metadata.author.empty()) |
| metadata.Set("author", document_metadata.author); |
| |
| if (!document_metadata.subject.empty()) |
| metadata.Set("subject", document_metadata.subject); |
| |
| if (!document_metadata.keywords.empty()) |
| metadata.Set("keywords", document_metadata.keywords); |
| |
| if (!document_metadata.creator.empty()) |
| metadata.Set("creator", document_metadata.creator); |
| |
| if (!document_metadata.producer.empty()) |
| metadata.Set("producer", document_metadata.producer); |
| |
| if (!document_metadata.creation_date.is_null()) { |
| metadata.Set("creationDate", base::TimeFormatShortDateAndTime( |
| document_metadata.creation_date)); |
| } |
| |
| if (!document_metadata.mod_date.is_null()) { |
| metadata.Set("modDate", |
| base::TimeFormatShortDateAndTime(document_metadata.mod_date)); |
| } |
| |
| metadata.Set("pageSize", FormatPageSize(engine_->GetUniformPageSizePoints())); |
| |
| metadata.Set("canSerializeDocument", |
| IsSaveDataSizeValid(engine_->GetLoadedByteSize())); |
| |
| base::Value::Dict message; |
| message.Set("type", "metadata"); |
| message.Set("metadataData", std::move(metadata)); |
| SendMessage(std::move(message)); |
| } |
| |
| void PdfViewWebPlugin::HandleResetPrintPreviewModeMessage( |
| const base::Value::Dict& message) { |
| const std::string& url = *message.FindString("url"); |
| bool is_grayscale = message.FindBool("grayscale").value(); |
| int print_preview_page_count = message.FindInt("pageCount").value(); |
| |
| // For security reasons, crash if `url` is not for Print Preview. |
| CHECK(IsPrintPreview()); |
| CHECK(IsPrintPreviewUrl(url)); |
| |
| DCHECK_GE(print_preview_page_count, 0); |
| |
| int page_index = ExtractPrintPreviewPageIndex(url); |
| if (IsPreviewingPDF(print_preview_page_count)) { |
| DCHECK_EQ(page_index, kCompletePDFIndex); |
| } else { |
| DCHECK_GE(page_index, 0); |
| } |
| |
| 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_ = DocumentLoadState::kComplete; |
| set_document_load_state(DocumentLoadState::kLoading); |
| set_last_progress_sent(0); |
| LoadUrl(url_, base::BindOnce(&PdfViewWebPlugin::DidOpen, |
| weak_factory_.GetWeakPtr())); |
| preview_engine_.reset(); |
| |
| // TODO(crbug.com/1237952): Figure out a more consistent way to preserve |
| // engine settings across a Print Preview reset. |
| engine_ = CreateEngine(this, PDFiumFormFiller::ScriptOption::kNoJavaScript); |
| engine_->ZoomUpdated(zoom() * device_scale_); |
| engine_->PageOffsetUpdated(available_area().OffsetFromOrigin()); |
| engine_->PluginSizeUpdated(available_area().size()); |
| engine_->SetGrayscale(is_grayscale); |
| |
| paint_manager().InvalidateRect(gfx::Rect(plugin_rect_.size())); |
| } |
| |
| void PdfViewWebPlugin::HandleLoadPreviewPageMessage( |
| const base::Value::Dict& message) { |
| const std::string& url = *message.FindString("url"); |
| int dest_page_index = message.FindInt("index").value(); |
| |
| // For security reasons, crash if `url` is not for Print Preview. |
| CHECK(IsPrintPreview()); |
| CHECK(IsPrintPreviewUrl(url)); |
| |
| DCHECK_GE(dest_page_index, 0); |
| DCHECK_LT(dest_page_index, print_preview_page_count_); |
| |
| // 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); |
| DCHECK_GE(src_page_index, 0); |
| |
| preview_pages_info_.push({.url = url, .dest_page_index = dest_page_index}); |
| LoadAvailablePreviewPage(); |
| } |
| |
| void PdfViewWebPlugin::LoadAvailablePreviewPage() { |
| if (preview_pages_info_.empty() || |
| document_load_state() != DocumentLoadState::kComplete || |
| preview_document_load_state_ == DocumentLoadState::kLoading) { |
| return; |
| } |
| |
| preview_document_load_state_ = DocumentLoadState::kLoading; |
| const std::string& url = preview_pages_info_.front().url; |
| |
| // Note that `last_progress_sent_` is not reset for preview page loads. |
| LoadUrl(url, base::BindOnce(&PdfViewWebPlugin::DidOpenPreview, |
| weak_factory_.GetWeakPtr())); |
| } |
| |
| void PdfViewWebPlugin::DidOpenPreview(std::unique_ptr<UrlLoader> loader, |
| int32_t result) { |
| DCHECK_EQ(result, kSuccess); |
| preview_client_ = std::make_unique<PreviewModeClient>(this); |
| preview_engine_ = CreateEngine(preview_client_.get(), |
| PDFiumFormFiller::ScriptOption::kNoJavaScript); |
| preview_engine_->PluginSizeUpdated({}); |
| preview_engine_->HandleDocumentLoad(std::move(loader), url_); |
| } |
| |
| void PdfViewWebPlugin::PreviewDocumentLoadComplete() { |
| if (preview_document_load_state_ != DocumentLoadState::kLoading || |
| preview_pages_info_.empty()) { |
| return; |
| } |
| |
| preview_document_load_state_ = DocumentLoadState::kComplete; |
| |
| int dest_page_index = preview_pages_info_.front().dest_page_index; |
| 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 PdfViewWebPlugin::PreviewDocumentLoadFailed() { |
| client_->RecordComputedAction("PDF.PreviewDocumentLoadFailure"); |
| if (preview_document_load_state_ != DocumentLoadState::kLoading || |
| preview_pages_info_.empty()) { |
| return; |
| } |
| |
| // Even if a print preview page failed to load, keep going. |
| preview_document_load_state_ = DocumentLoadState::kFailed; |
| preview_pages_info_.pop(); |
| ++print_preview_loaded_page_count_; |
| LoadNextPreviewPage(); |
| } |
| |
| void PdfViewWebPlugin::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(); |
| } |
| |
| } // namespace chrome_pdf |