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