Separate motion event touch geometry orientation from stylus orientation.

content/browser/renderer_host/input/motion_event_android.h

 
 // Copyright 2014 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 CONTENT_BROWSER_RENDERER_HOST_INPUT_MOTION_EVENT_ANDROID_H_
 #define CONTENT_BROWSER_RENDERER_HOST_INPUT_MOTION_EVENT_ANDROID_H_
 
 #include <jni.h>
 
@@ skipping 51 matching lines @@
   Action GetAction() const override;
   int GetActionIndex() const override;
   size_t GetPointerCount() const override;
   int GetPointerId(size_t pointer_index) const override;
   float GetX(size_t pointer_index) const override;
   float GetY(size_t pointer_index) const override;
   float GetRawX(size_t pointer_index) const override;
   float GetRawY(size_t pointer_index) const override;
   float GetTouchMajor(size_t pointer_index) const override;
   float GetTouchMinor(size_t pointer_index) const override;
-  float GetOrientation(size_t pointer_index) const override;
+  float GetTouchOrientation(size_t pointer_index) const override;
   float GetPressure(size_t pointer_index) const override;
   base::TimeTicks GetEventTime() const override;
   size_t GetHistorySize() const override;
   base::TimeTicks GetHistoricalEventTime(
       size_t historical_index) const override;
   float GetHistoricalTouchMajor(size_t pointer_index,
                                 size_t historical_index) const override;
   float GetHistoricalX(size_t pointer_index,
                        size_t historical_index) const override;
   float GetHistoricalY(size_t pointer_index,
                        size_t historical_index) const override;
   ToolType GetToolType(size_t pointer_index) const override;
   int GetButtonState() const override;
   int GetFlags() const override;
 
   static bool RegisterMotionEventAndroid(JNIEnv* env);
 
  private:
   struct CachedPointer;
 
+  float GetOrientation(size_t pointer_index) const;

[USE eero AT chromium.org, 2015/05/27 08:43:49]

I keep this as a separate function as it is useful for getting a tilt
orientation.

   float ToDips(float pixels) const;
   CachedPointer FromAndroidPointer(const Pointer& pointer) const;
 
   // Cache pointer coords, id's and major lengths for the most common
   // touch-related scenarios, i.e., scrolling and pinching.  This prevents
   // redundant JNI fetches for the same bits.
   enum { MAX_POINTERS_TO_CACHE = 2 };
 
   // The Java reference to the underlying MotionEvent.
   base::android::ScopedJavaGlobalRef<jobject> event_;
@@ skipping 22 matching lines @@
 
   // A unique identifier for the Android motion event.
   const uint32 unique_event_id_;
 
   DISALLOW_COPY_AND_ASSIGN(MotionEventAndroid);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_INPUT_MOTION_EVENT_ANDROID_H_