Extract touch handling logic from EventHandler

third_party/WebKit/Source/core/events/PointerEventFactory.h

 // Copyright 2016 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 PointerEventFactory_h
 #define PointerEventFactory_h
 
 #include "core/CoreExport.h"
 #include "core/events/PointerEvent.h"
 #include "public/platform/WebPointerProperties.h"
@@ skipping 18 matching lines @@
     PointerEventFactory();
     ~PointerEventFactory();
 
     PointerEvent* create(
         const AtomicString& mouseEventName, const PlatformMouseEvent&,
         EventTarget* relatedTarget,
         AbstractView*);
 
     PointerEvent* create(const AtomicString& type,
         const PlatformTouchPoint&, PlatformEvent::Modifiers,
-        const double width, const double height,
-        const double clientX, const double clientY);
+        const FloatSize& pointRadius,
+        const FloatPoint& pagePoint);
 
     PointerEvent* createPointerCancelEvent(
         const int pointerId, const WebPointerProperties::PointerType);
 
     // For creating capture events (i.e got/lostpointercapture)
     PointerEvent* createPointerCaptureEvent(
         PointerEvent*,
         const AtomicString&);
 
     // For creating transition events (i.e pointerout/leave/over/enter)
     PointerEvent* createPointerTransitionEvent(
         PointerEvent*,
         const AtomicString&,
         EventTarget*);
 
     // Clear all the existing ids.
     void clear();
 
     // When a particular pointerId is removed, the id is considered free even
     // though there might have been other PointerEvents that were generated with
     // the same id before.
     bool remove(const int);
 
     // Returns all ids of the given pointerType.
-    Vector<int> getPointerIdsOfType(WebPointerProperties::PointerType);
+    Vector<int> getPointerIdsOfType(WebPointerProperties::PointerType) const;
 
-    // Returns whether a pointer id exists and active
-    bool isActive(const int);
+    // Returns whether a pointer id exists and active.
+    bool isActive(const int) const;
 
-    // Returns type of pointer id if exists, otherwise Unknown
-    WebPointerProperties::PointerType getPointerType(const int);
+    // Returns type of pointer id if exists, otherwise Unknown.
+    WebPointerProperties::PointerType getPointerType(const int) const;
 
-    // Returns whether a pointer id exists and has at least one pressed button
-    bool isActiveButtonsState(const int);
+    // Returns whether a pointer id exists and has at least one pressed button.
+    bool isActiveButtonsState(const int) const;
+
+    // Returns the id of the pointer event corresponding to the given pointer
+    // properties if exists otherwise s_invalidId.
+    int getPointerEventId(const WebPointerProperties&) const;
 
 private:
     typedef WTF::UnsignedWithZeroKeyHashTraits<int> UnsignedHash;
     typedef struct IncomingId : public std::pair<int, int> {
         IncomingId() {}
         IncomingId(WebPointerProperties::PointerType pointerType,
             int rawId)
             : std::pair<int, int>(static_cast<int>(pointerType), rawId) {}
         int pointerType() const {return first;}
         int rawId() const {return second;}
@@ skipping 19 matching lines @@
     int m_currentId;
     HashMap<IncomingId, int, WTF::PairHash<int, int>, WTF::PairHashTraits<UnsignedHash, UnsignedHash>> m_pointerIncomingIdMapping;
     HashMap<int, PointerAttributes, WTF::IntHash<int>, UnsignedHash> m_pointerIdMapping;
     int m_primaryId[static_cast<int>(WebPointerProperties::PointerType::LastEntry) + 1];
     int m_idCount[static_cast<int>(WebPointerProperties::PointerType::LastEntry) + 1];
 };
 
 } // namespace blink
 
 #endif // PointerEventFactory_h