Add the pdf plugin's source in src\pdf.

pdf/out_of_process_instance.h

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PDF_OUT_OF_PROCESS_INSTANCE_H_
+#define PDF_OUT_OF_PROCESS_INSTANCE_H_
+
+#include <queue>
+#include <set>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "base/memory/scoped_ptr.h"
+#include "pdf/paint_manager.h"
+#include "pdf/pdf_engine.h"
+#include "pdf/preview_mode_client.h"
+
+#include "ppapi/c/private/ppb_pdf.h"
+#include "ppapi/cpp/dev/printing_dev.h"
+#include "ppapi/cpp/dev/scriptable_object_deprecated.h"
+#include "ppapi/cpp/dev/selection_dev.h"
+#include "ppapi/cpp/graphics_2d.h"
+#include "ppapi/cpp/image_data.h"
+#include "ppapi/cpp/input_event.h"
+#include "ppapi/cpp/private/find_private.h"
+#include "ppapi/cpp/private/instance_private.h"
+#include "ppapi/cpp/private/uma_private.h"
+#include "ppapi/cpp/private/var_private.h"
+#include "ppapi/cpp/url_loader.h"
+#include "ppapi/utility/completion_callback_factory.h"
+
+namespace pp {
+class TextInput_Dev;
+}
+
+namespace chrome_pdf {
+
+class OutOfProcessInstance : public pp::InstancePrivate,
+                             public pp::Find_Private,
+                             public pp::Printing_Dev,
+                             public pp::Selection_Dev,
+                             public PaintManager::Client,
+                             public PDFEngine::Client,
+                             public PreviewModeClient::Client {
+ public:
+  explicit OutOfProcessInstance(PP_Instance instance);
+  virtual ~OutOfProcessInstance();
+
+  // pp::Instance implementation.
+  virtual bool Init(uint32_t argc,
+                    const char* argn[],
+                    const char* argv[]) OVERRIDE;
+  virtual void HandleMessage(const pp::Var& message) OVERRIDE;
+  virtual bool HandleInputEvent(const pp::InputEvent& event) OVERRIDE;
+  virtual void DidChangeView(const pp::View& view) OVERRIDE;
+  virtual pp::Var GetInstanceObject() OVERRIDE;
+
+  // pp::Find_Private implementation.
+  virtual bool StartFind(const std::string& text, bool case_sensitive) OVERRIDE;
+  virtual void SelectFindResult(bool forward) OVERRIDE;
+  virtual void StopFind() OVERRIDE;
+
+  // pp::PaintManager::Client implementation.
+  virtual void OnPaint(const std::vector<pp::Rect>& paint_rects,
+                       std::vector<PaintManager::ReadyRect>* ready,
+                       std::vector<pp::Rect>* pending) OVERRIDE;
+
+  // pp::Printing_Dev implementation.
+  virtual uint32_t QuerySupportedPrintOutputFormats() OVERRIDE;
+  virtual int32_t PrintBegin(
+      const PP_PrintSettings_Dev& print_settings) OVERRIDE;
+  virtual pp::Resource PrintPages(
+      const PP_PrintPageNumberRange_Dev* page_ranges,
+      uint32_t page_range_count) OVERRIDE;
+  virtual void PrintEnd() OVERRIDE;
+  virtual bool IsPrintScalingDisabled() OVERRIDE;
+
+  // pp::Private implementation.
+  virtual pp::Var GetLinkAtPosition(const pp::Point& point);
+
+  // PPP_Selection_Dev implementation.
+  virtual pp::Var GetSelectedText(bool html) OVERRIDE;
+
+  void FlushCallback(int32_t result);
+  void DidOpen(int32_t result);
+  void DidOpenPreview(int32_t result);
+
+  // Called when the timer is fired.
+  void OnClientTimerFired(int32_t id);
+
+  // Called to print without re-entrancy issues.
+  void OnPrint(int32_t);
+
+  // PDFEngine::Client implementation.
+  virtual void DocumentSizeUpdated(const pp::Size& size);
+  virtual void Invalidate(const pp::Rect& rect);
+  virtual void Scroll(const pp::Point& point);
+  virtual void ScrollToX(int position);
+  virtual void ScrollToY(int position);
+  virtual void ScrollToPage(int page);
+  virtual void NavigateTo(const std::string& url, bool open_in_new_tab);
+  virtual void UpdateCursor(PP_CursorType_Dev cursor);
+  virtual void UpdateTickMarks(const std::vector<pp::Rect>& tickmarks);
+  virtual void NotifyNumberOfFindResultsChanged(int total, bool final_result);
+  virtual void NotifySelectedFindResultChanged(int current_find_index);
+  virtual void GetDocumentPassword(
+      pp::CompletionCallbackWithOutput<pp::Var> callback);
+  virtual void Alert(const std::string& message);
+  virtual bool Confirm(const std::string& message);
+  virtual std::string Prompt(const std::string& question,
+                             const std::string& default_answer);
+  virtual std::string GetURL();
+  virtual void Email(const std::string& to,
+                     const std::string& cc,
+                     const std::string& bcc,
+                     const std::string& subject,
+                     const std::string& body);
+  virtual void Print();
+  virtual void SubmitForm(const std::string& url,
+                          const void* data,
+                          int length);
+  virtual std::string ShowFileSelectionDialog();
+  virtual pp::URLLoader CreateURLLoader();
+  virtual void ScheduleCallback(int id, int delay_in_ms);
+  virtual void SearchString(const base::char16* string,
+                            const base::char16* term,
+                            bool case_sensitive,
+                            std::vector<SearchStringResult>* results);
+  virtual void DocumentPaintOccurred();
+  virtual void DocumentLoadComplete(int page_count);
+  virtual void DocumentLoadFailed();
+  virtual pp::Instance* GetPluginInstance();
+  virtual void DocumentHasUnsupportedFeature(const std::string& feature);
+  virtual void DocumentLoadProgress(uint32 available, uint32 doc_size);
+  virtual void FormTextFieldFocusChange(bool in_focus);
+  virtual bool IsPrintPreview();
+
+  // PreviewModeClient::Client implementation.
+  virtual void PreviewDocumentLoadComplete() OVERRIDE;
+  virtual void PreviewDocumentLoadFailed() OVERRIDE;
+
+  // Helper functions for implementing PPP_PDF.
+  void RotateClockwise();
+  void RotateCounterclockwise();
+
+ private:
+  void ResetRecentlySentFindUpdate(int32_t);
+
+  // Called whenever the plugin geometry changes to update the location of the
+  // background parts, and notifies the pdf engine.
+  void OnGeometryChanged(double old_zoom, float old_device_scale);
+
+  // Figures out the location of any background rectangles (i.e. those that
+  // aren't painted by the PDF engine).
+  void CalculateBackgroundParts();
+
+  // Computes document width/height in device pixels, based on current zoom and
+  // device scale
+  int GetDocumentPixelWidth() const;
+  int GetDocumentPixelHeight() const;
+
+  // Draws a rectangle with the specified dimensions and color in our buffer.
+  void FillRect(const pp::Rect& rect, unsigned int color);
+
+  void LoadUrl(const std::string& url);
+  void LoadPreviewUrl(const std::string& url);
+  void LoadUrlInternal(const std::string& url, pp::URLLoader* loader,
+                       void (OutOfProcessInstance::* method)(int32_t));
+
+  // Creates a URL loader and allows it to access all urls, i.e. not just the
+  // frame's origin.
+  pp::URLLoader CreateURLLoaderInternal();
+
+  // Figure out the initial page to display based on #page=N and #nameddest=foo
+  // in the |url_|.
+  // Returns -1 if there is no valid fragment. The returned value is 0-based,
+  // whereas page=N is 1-based.
+  int GetInitialPage(const std::string& url);
+
+  void FormDidOpen(int32_t result);
+
+  std::string GetLocalizedString(PP_ResourceString id);
+
+  void UserMetricsRecordAction(const std::string& action);
+
+  enum DocumentLoadState {
+    LOAD_STATE_LOADING,
+    LOAD_STATE_COMPLETE,
+    LOAD_STATE_FAILED,
+  };
+
+  // Set new zoom scale.
+  void SetZoom(double scale);
+
+  // Reduces the document to 1 page and appends |print_preview_page_count_|
+  // blank pages to the document for print preview.
+  void AppendBlankPrintPreviewPages();
+
+  // Process the preview page data information. |src_url| specifies the preview
+  // page data location. The |src_url| is in the format:
+  // chrome://print/id/page_number/print.pdf
+  // |dst_page_index| specifies the blank page index that needs to be replaced
+  // with the new page data.
+  void ProcessPreviewPageInfo(const std::string& src_url, int dst_page_index);
+  // Load the next available preview page into the blank page.
+  void LoadAvailablePreviewPage();
+
+  pp::ImageData image_data_;
+  // Used when the plugin is embedded in a page and we have to create the loader
+  // ourself.
+  pp::CompletionCallbackFactory<OutOfProcessInstance> loader_factory_;
+  pp::URLLoader embed_loader_;
+  pp::URLLoader embed_preview_loader_;
+
+  PP_CursorType_Dev cursor_;  // The current cursor.
+
+  pp::CompletionCallbackFactory<OutOfProcessInstance> timer_factory_;
+
+  // Size, in pixels, of plugin rectangle.
+  pp::Size plugin_size_;
+  // Size, in DIPs, of plugin rectangle.
+  pp::Size plugin_dip_size_;
+  // Remaining area, in pixels, to render the pdf in after accounting for
+  // horizontal centering.
+  pp::Rect available_area_;
+  // Size of entire document in pixels (i.e. if each page is 800 pixels high and
+  // there are 10 pages, the height will be 8000).
+  pp::Size document_size_;
+
+  double zoom_;  // Current zoom factor.
+
+  float device_scale_;  // Current device scale factor.
+  bool printing_enabled_;
+  // True if the plugin is full-page.
+  bool full_;
+
+  PaintManager paint_manager_;
+
+  struct BackgroundPart {
+    pp::Rect location;
+    unsigned int color;
+  };
+  std::vector<BackgroundPart> background_parts_;
+
+  struct PrintSettings {
+    PrintSettings() {
+      Clear();
+    }
+    void Clear() {
+      is_printing = false;
+      print_pages_called_ = false;
+      memset(&pepper_print_settings, 0, sizeof(pepper_print_settings));
+    }
+    // This is set to true when PrintBegin is called and false when PrintEnd is
+    // called.
+    bool is_printing;
+    // To know whether this was an actual print operation, so we don't double
+    // count UMA logging.
+    bool print_pages_called_;
+    PP_PrintSettings_Dev pepper_print_settings;
+  };
+
+  PrintSettings print_settings_;
+
+  scoped_ptr<PDFEngine> engine_;
+
+  // This engine is used to render the individual preview page data. This is
+  // used only in print preview mode. This will use |PreviewModeClient|
+  // interface which has very limited access to the pp::Instance.
+  scoped_ptr<PDFEngine> preview_engine_;
+
+  std::string url_;
+
+  // Used for submitting forms.
+  pp::CompletionCallbackFactory<OutOfProcessInstance> form_factory_;
+  pp::URLLoader form_loader_;
+
+  // Used for printing without re-entrancy issues.
+  pp::CompletionCallbackFactory<OutOfProcessInstance> print_callback_factory_;
+
+  // True if we haven't painted the plugin viewport yet.
+  bool first_paint_;
+
+  DocumentLoadState document_load_state_;
+  DocumentLoadState preview_document_load_state_;
+
+  // JavaScript interface to control this instance.
+  // This wraps a PDFScriptableObject in a pp::Var.
+  pp::VarPrivate instance_object_;
+
+  // A UMA resource for histogram reporting.
+  pp::UMAPrivate uma_;
+
+  // Used so that we only tell the browser once about an unsupported feature, to
+  // avoid the infobar going up more than once.
+  bool told_browser_about_unsupported_feature_;
+
+  // Keeps track of which unsupported features we reported, so we avoid spamming
+  // the stats if a feature shows up many times per document.
+  std::set<std::string> unsupported_features_reported_;
+
+  // Number of pages in print preview mode, 0 if not in print preview mode.
+  int print_preview_page_count_;
+  std::vector<int> print_preview_page_numbers_;
+
+  // Used to manage loaded print preview page information. A |PreviewPageInfo|
+  // consists of data source url string and the page index in the destination
+  // document.
+  typedef std::pair<std::string, int> PreviewPageInfo;
+  std::queue<PreviewPageInfo> preview_pages_info_;
+
+  // Used to signal the browser about focus changes to trigger the OSK.
+  // TODO(abodenha@chromium.org) Implement full IME support in the plugin.
+  // http://crbug.com/132565
+  scoped_ptr<pp::TextInput_Dev> text_input_;
+
+  // The last document load progress value sent to the web page.
+  double last_progress_sent_;
+
+  // Whether an update to the number of find results found was sent less than
+  // |kFindResultCooldownMs| milliseconds ago.
+  bool recently_sent_find_update_;
+
+  // The tickmarks.
+  std::vector<pp::Rect> tickmarks_;
+
+  // Whether the plugin has received a viewport changed message. Nothing should
+  // be painted until this is received.
+  bool received_viewport_message_;
+
+  // The callback for receiving the password from the page.
+  scoped_ptr<pp::CompletionCallbackWithOutput<pp::Var> > password_callback_;
+};
+
+}  // namespace chrome_pdf
+
+#endif  // PDF_OUT_OF_PROCESS_INSTANCE_H_