Handle long press in PDF documents.

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 <stdint.h>
 #include <string.h>
 
@@ skipping 67 matching lines @@
   pp::Var GetLinkAtPosition(const pp::Point& point);
   void GetPrintPresetOptionsFromDocument(PP_PdfPrintPresetOptions_Dev* options);
   void EnableAccessibility();
 
   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);
+  void OnClientTouchTimerFired(int32_t id);
 
   // Called to print without re-entrancy issues.
   void OnPrint(int32_t);
 
   // PDFEngine::Client implementation.
   void DocumentSizeUpdated(const pp::Size& size) override;
   void Invalidate(const pp::Rect& rect) override;
   void Scroll(const pp::Point& point) override;
   void ScrollToX(int position) override;
   void ScrollToY(int position) override;
@@ skipping 16 matching lines @@
              const std::string& bcc,
              const std::string& subject,
              const std::string& body) override;
   void Print() override;
   void SubmitForm(const std::string& url,
                   const void* data,
                   int length) override;
   std::string ShowFileSelectionDialog() override;
   pp::URLLoader CreateURLLoader() override;
   void ScheduleCallback(int id, int delay_in_ms) override;
+  void ScheduleTouchTimerCallback(int id, int delay_in_ms) override;
   void SearchString(const base::char16* string,
                     const base::char16* term,
                     bool case_sensitive,
                     std::vector<SearchStringResult>* results) override;
   void DocumentPaintOccurred() override;
   void DocumentLoadComplete(int page_count) override;
   void DocumentLoadFailed() override;
   void FontSubstituted() override;
   pp::Instance* GetPluginInstance() override;
   void DocumentHasUnsupportedFeature(const std::string& feature) override;
@@ skipping 94 matching lines @@
   // 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_;
+  // The scroll offset
+  pp::Point scroll_offset_;

[Lei Zhang, 2017/05/03 01:52:53]

BTW, there's another scroll offset below that's a pp::FloatPoint. Haven't looked
at if we need both, or if this needs to be a FloatPoint.

[dsinclair, 2017/05/03 14:18:41]

The one below is used specifically for pinch zooming. It doesn't get it's size
from pepper, it gets it from the pinch message.

This one could be a float, but we use the number as an int later anyway, so just
storing as an int seems fine.

 
   // Enumeration of pinch states.
   // This should match PinchPhase enum in
   // chrome/browser/resources/pdf/viewport.js
   enum PinchPhase {
     PINCH_NONE = 0,
     PINCH_START = 1,
     PINCH_UPDATE_ZOOM_OUT = 2,
     PINCH_UPDATE_ZOOM_IN = 3,
     PINCH_END = 4
@@ skipping 141 matching lines @@
 
   // True if the plugin is loaded in print preview, otherwise false.
   bool is_print_preview_;
 
   DISALLOW_COPY_AND_ASSIGN(OutOfProcessInstance);
 };
 
 }  // namespace chrome_pdf
 
 #endif  // PDF_OUT_OF_PROCESS_INSTANCE_H_