/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- * vim: set ts=2 sw=2 et tw=78: * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #ifndef InkCollector_h__ #define InkCollector_h__ #include <msinkaut.h> #include "mozilla/StaticPtr.h" #define MOZ_WM_PEN_LEAVES_HOVER_OF_DIGITIZER WM_USER + 0x83 class InkCollectorEvent : public _IInkCollectorEvents { public: // IUnknown HRESULT __stdcall QueryInterface(REFIID aRiid, void **aObject); virtual ULONG STDMETHODCALLTYPE AddRef() { return ++mRefCount; } virtual ULONG STDMETHODCALLTYPE Release() { MOZ_ASSERT(mRefCount); if (!--mRefCount) { delete this; return 0; } return mRefCount; } protected: // IDispatch STDMETHOD(GetTypeInfoCount)(UINT* aInfo) { return E_NOTIMPL; } STDMETHOD(GetTypeInfo)(UINT aInfo, LCID aId, ITypeInfo** aTInfo) { return E_NOTIMPL; } STDMETHOD(GetIDsOfNames)(REFIID aRiid, LPOLESTR* aStrNames, UINT aNames, LCID aId, DISPID* aDispId) { return E_NOTIMPL; } STDMETHOD(Invoke)(DISPID aDispIdMember, REFIID aRiid, LCID aId, WORD wFlags, DISPPARAMS* aDispParams, VARIANT* aVarResult, EXCEPINFO* aExcepInfo, UINT* aArgErr); // InkCollectorEvent void CursorOutOfRange(IInkCursor* aCursor) const; bool IsHardProximityTablet(IInkTablet* aTablet) const; private: uint32_t mRefCount = 0; }; class InkCollector { public: ~InkCollector(); void Shutdown(); HWND GetTarget(); void SetTarget(HWND aTargetWindow); void ClearTarget(); uint16_t GetPointerId(); // 0 shows that there is no existing pen. void SetPointerId(uint16_t aPointerId); void ClearPointerId(); static StaticAutoPtr<InkCollector> sInkCollector; protected: void Initialize(); void OnInitialize(); void Enable(bool aNewState); private: RefPtr<IUnknown> mMarshaller; RefPtr<IInkCollector> mInkCollector; RefPtr<IConnectionPoint> mConnectionPoint; RefPtr<InkCollectorEvent> mInkCollectorEvent; HWND mTargetWindow = 0; DWORD mCookie = 0; bool mComInitialized = false; bool mEnabled = false; // This value holds the previous pointerId of the pen, and is used by the // nsWindow when processing a MOZ_WM_PEN_LEAVES_HOVER_OF_DIGITIZER which // indicates that a pen leaves the digitizer. // TODO: If we move our implementation to window pointer input messages, then // we no longer need this value, since the pointerId can be retrieved from the // window message, please refer to // https://msdn.microsoft.com/en-us/library/windows/desktop/hh454916(v=vs.85).aspx // NOTE: The pointerId of a pen shouldn't be 0 on a Windows platform, since 0 // is reserved of the mouse, please refer to // https://msdn.microsoft.com/en-us/library/windows/desktop/ms703320(v=vs.85).aspx uint16_t mPointerId = 0; }; #endif // InkCollector_h__