Set width=height=1 of mouse like pointer events

third_party/WebKit/Source/core/input/PointerEventManager.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 PointerEventManager_h
 #define PointerEventManager_h
 
 #include "core/CoreExport.h"
 #include "core/events/PointerEvent.h"
 #include "core/events/PointerEventFactory.h"
@@ skipping 18 matching lines @@
 
     WebInputEventResult sendMousePointerEvent(
         Node*, const AtomicString& type,
         int clickCount, const PlatformMouseEvent&,
         Node* relatedTarget,
         Node* lastNodeUnderMouse);
 
     WebInputEventResult handleTouchEvents(
         const PlatformTouchEvent&);
 
-    // Sends node transition events mouseout/leave/over/enter to the
+    // Sends boundary events mouseout/leave/over/enter to the
     // corresponding targets. This function sends pointerout/leave/over/enter
     // only when isFrameBoundaryTransition is true which indicates the
     // transition is over the document boundary and not only the elements border
     // inside the document. If isFrameBoundaryTransition is false,
     // then the event is a compatibility event like those created by touch
     // and in that case the corresponding pointer events will be handled by
     // sendTouchPointerEvent for example and there is no need to send pointer
-    // transition events. Note that normal mouse events (e.g. mousemove/down/up)
-    // and their corresponding transition events will be handled altogether by
+    // boundary events. Note that normal mouse events (e.g. mousemove/down/up)
+    // and their corresponding boundary events will be handled altogether by
     // sendMousePointerEvent function.
-    void sendMouseAndPossiblyPointerNodeTransitionEvents(
+    void sendMouseAndPossiblyPointerBoundaryEvents(
         Node* exitedNode,
         Node* enteredNode,
         const PlatformMouseEvent&,
         bool isFrameBoundaryTransition);
 
     // Resets the internal state of this object.
     void clear();
 
     void elementRemoved(EventTarget*);
     void setPointerCapture(int, EventTarget*);
@@ skipping 35 matching lines @@
 
     // Sends touch pointer events and sets consumed bits in TouchInfo array
     // based on the return value of pointer event handlers.
     void dispatchTouchPointerEvents(
         const PlatformTouchEvent&,
         HeapVector<TouchEventManager::TouchInfo>&);
 
     // Returns whether the event is consumed or not.
     WebInputEventResult sendTouchPointerEvent(EventTarget*, PointerEvent*);
 
-    void sendNodeTransitionEvents(
+    void sendBoundaryEvents(
         EventTarget* exitedTarget,
         EventTarget* enteredTarget,
         PointerEvent*,
         const PlatformMouseEvent& = PlatformMouseEvent(),
         bool sendMouseEvent = false);
     void setNodeUnderPointer(PointerEvent*,
         EventTarget*, bool sendEvent = true);
 
-    // Returns whether the pointer capture is changed. In this case this
-    // function will take care of transition events and setNodeUnderPointer
-    // should not send transition events.
+    // Processes the assignment of |m_pointerCaptureTarget| from |m_pendingPointerCaptureTarget|
+    // and sends the got/lostpointercapture events, as per the spec:
+    // https://w3c.github.io/pointerevents/#process-pending-pointer-capture
+    // Returns whether the pointer capture is changed. When pointer capture is changed,
+    // this function will take care of boundary events.
     bool processPendingPointerCapture(
         PointerEvent*,
         EventTarget*,
         const PlatformMouseEvent& = PlatformMouseEvent(),
         bool sendMouseEvent = false);
 
     // Processes the capture state of a pointer, updates node under
-    // pointer, and sends corresponding transition events for pointer if
-    // setPointerPosition is true. It also sends corresponding transition events
+    // pointer, and sends corresponding boundary events for pointer if
+    // setPointerPosition is true. It also sends corresponding boundary events
     // for mouse if sendMouseEvent is true.
     void processCaptureAndPositionOfPointerEvent(
         PointerEvent*,
         EventTarget* hitTestTarget,
         EventTarget* lastNodeUnderMouse = nullptr,
         const PlatformMouseEvent& = PlatformMouseEvent(),
         bool sendMouseEvent = false,
         bool setPointerPosition = true);
 
     void removeTargetFromPointerCapturingMapping(
@@ skipping 33 matching lines @@
     PointerCapturingMap m_pointerCaptureTarget;
     PointerCapturingMap m_pendingPointerCaptureTarget;
     PointerEventFactory m_pointerEventFactory;
     TouchEventManager m_touchEventManager;
 
 };
 
 } // namespace blink
 
 #endif // PointerEventManager_h