forked from mirrors/gecko-dev
63ca6a38f3
It looks like it was added to abstract commonalities between Win32 and WinRT. But we dropped support for WinRT a long time ago, and there hasn't been any work on this area of code in 8 years. In the meantime, it just adds an extra layer of indirection that doesn't need to exist. Differential Revision: https://phabricator.services.mozilla.com/D139771
150 lines
6.1 KiB
C++
150 lines
6.1 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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#ifndef WinPointerEvents_h__
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#define WinPointerEvents_h__
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#include "mozilla/MouseEvents.h"
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#include "nsWindow.h"
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// Define PointerEvent related macros and structures when building code on
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// Windows version before Win8.
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#if WINVER < 0x0602
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// These definitions are copied from WinUser.h. Some of them are not used but
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// keep them here for future usage.
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# define WM_NCPOINTERUPDATE 0x0241
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# define WM_NCPOINTERDOWN 0x0242
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# define WM_NCPOINTERUP 0x0243
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# define WM_POINTERUPDATE 0x0245
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# define WM_POINTERDOWN 0x0246
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# define WM_POINTERUP 0x0247
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# define WM_POINTERENTER 0x0249
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# define WM_POINTERLEAVE 0x024A
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# define WM_POINTERACTIVATE 0x024B
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# define WM_POINTERCAPTURECHANGED 0x024C
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# define WM_TOUCHHITTESTING 0x024D
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# define WM_POINTERWHEEL 0x024E
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# define WM_POINTERHWHEEL 0x024F
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# define DM_POINTERHITTEST 0x0250
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/*
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* Flags that appear in pointer input message parameters
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*/
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# define POINTER_MESSAGE_FLAG_NEW 0x00000001 // New pointer
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# define POINTER_MESSAGE_FLAG_INRANGE 0x00000002 // Pointer has not departed
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# define POINTER_MESSAGE_FLAG_INCONTACT 0x00000004 // Pointer is in contact
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# define POINTER_MESSAGE_FLAG_FIRSTBUTTON 0x00000010 // Primary action
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# define POINTER_MESSAGE_FLAG_SECONDBUTTON 0x00000020 // Secondary action
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# define POINTER_MESSAGE_FLAG_THIRDBUTTON 0x00000040 // Third button
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# define POINTER_MESSAGE_FLAG_FOURTHBUTTON 0x00000080 // Fourth button
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# define POINTER_MESSAGE_FLAG_FIFTHBUTTON 0x00000100 // Fifth button
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# define POINTER_MESSAGE_FLAG_PRIMARY 0x00002000 // Pointer is primary
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# define POINTER_MESSAGE_FLAG_CONFIDENCE \
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0x00004000 // Pointer is considered unlikely to be accidental
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# define POINTER_MESSAGE_FLAG_CANCELED \
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0x00008000 // Pointer is departing in an abnormal manner
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/*
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* Macros to retrieve information from pointer input message parameters
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*/
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# define GET_POINTERID_WPARAM(wParam) (LOWORD(wParam))
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# define IS_POINTER_FLAG_SET_WPARAM(wParam, flag) \
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(((DWORD)HIWORD(wParam) & (flag)) == (flag))
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# define IS_POINTER_NEW_WPARAM(wParam) \
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IS_POINTER_FLAG_SET_WPARAM(wParam, POINTER_MESSAGE_FLAG_NEW)
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# define IS_POINTER_INRANGE_WPARAM(wParam) \
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IS_POINTER_FLAG_SET_WPARAM(wParam, POINTER_MESSAGE_FLAG_INRANGE)
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# define IS_POINTER_INCONTACT_WPARAM(wParam) \
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IS_POINTER_FLAG_SET_WPARAM(wParam, POINTER_MESSAGE_FLAG_INCONTACT)
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# define IS_POINTER_FIRSTBUTTON_WPARAM(wParam) \
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IS_POINTER_FLAG_SET_WPARAM(wParam, POINTER_MESSAGE_FLAG_FIRSTBUTTON)
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# define IS_POINTER_SECONDBUTTON_WPARAM(wParam) \
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IS_POINTER_FLAG_SET_WPARAM(wParam, POINTER_MESSAGE_FLAG_SECONDBUTTON)
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# define IS_POINTER_THIRDBUTTON_WPARAM(wParam) \
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IS_POINTER_FLAG_SET_WPARAM(wParam, POINTER_MESSAGE_FLAG_THIRDBUTTON)
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# define IS_POINTER_FOURTHBUTTON_WPARAM(wParam) \
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IS_POINTER_FLAG_SET_WPARAM(wParam, POINTER_MESSAGE_FLAG_FOURTHBUTTON)
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# define IS_POINTER_FIFTHBUTTON_WPARAM(wParam) \
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IS_POINTER_FLAG_SET_WPARAM(wParam, POINTER_MESSAGE_FLAG_FIFTHBUTTON)
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# define IS_POINTER_PRIMARY_WPARAM(wParam) \
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IS_POINTER_FLAG_SET_WPARAM(wParam, POINTER_MESSAGE_FLAG_PRIMARY)
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# define HAS_POINTER_CONFIDENCE_WPARAM(wParam) \
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IS_POINTER_FLAG_SET_WPARAM(wParam, POINTER_MESSAGE_FLAG_CONFIDENCE)
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# define IS_POINTER_CANCELED_WPARAM(wParam) \
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IS_POINTER_FLAG_SET_WPARAM(wParam, POINTER_MESSAGE_FLAG_CANCELED)
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/*
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* WM_POINTERACTIVATE return codes
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*/
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# define PA_ACTIVATE MA_ACTIVATE
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# define PA_NOACTIVATE MA_NOACTIVATE
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#endif // WINVER < 0x0602
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/******************************************************************************
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* WinPointerInfo
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*
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* This is a helper class to handle WM_POINTER*. It only supports Win8 or later.
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*
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******************************************************************************/
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class WinPointerInfo final : public mozilla::WidgetPointerHelper {
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public:
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WinPointerInfo() : WidgetPointerHelper(), mPressure(0), mButtons(0) {}
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WinPointerInfo(uint32_t aPointerId, uint32_t aTiltX, uint32_t aTiltY,
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float aPressure, int16_t aButtons)
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: WidgetPointerHelper(aPointerId, aTiltX, aTiltY),
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mPressure(aPressure),
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mButtons(aButtons) {}
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float mPressure;
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int16_t mButtons;
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};
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class WinPointerEvents final {
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public:
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explicit WinPointerEvents();
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public:
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bool ShouldHandleWinPointerMessages(UINT aMsg, WPARAM aWParam);
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uint32_t GetPointerId(WPARAM aWParam) {
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return GET_POINTERID_WPARAM(aWParam);
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}
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bool GetPointerType(uint32_t aPointerId, POINTER_INPUT_TYPE* aPointerType);
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POINTER_INPUT_TYPE GetPointerType(uint32_t aPointerId);
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bool GetPointerInfo(uint32_t aPointerId, POINTER_INFO* aPointerInfo);
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bool GetPointerPenInfo(uint32_t aPointerId, POINTER_PEN_INFO* aPenInfo);
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bool ShouldEnableInkCollector();
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bool ShouldRollupOnPointerEvent(UINT aMsg, WPARAM aWParam);
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bool ShouldFirePointerEventByWinPointerMessages();
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WinPointerInfo* GetCachedPointerInfo(UINT aMsg, WPARAM aWParam);
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void ConvertAndCachePointerInfo(UINT aMsg, WPARAM aWParam);
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void ConvertAndCachePointerInfo(WPARAM aWParam, WinPointerInfo* aInfo);
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private:
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// Function prototypes
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typedef BOOL(WINAPI* GetPointerTypePtr)(uint32_t aPointerId,
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POINTER_INPUT_TYPE* aPointerType);
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typedef BOOL(WINAPI* GetPointerInfoPtr)(uint32_t aPointerId,
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POINTER_INFO* aPointerInfo);
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typedef BOOL(WINAPI* GetPointerPenInfoPtr)(uint32_t aPointerId,
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POINTER_PEN_INFO* aPenInfo);
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void InitLibrary();
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static HMODULE sLibraryHandle;
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static const wchar_t kPointerLibraryName[];
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// Static function pointers
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static GetPointerTypePtr getPointerType;
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static GetPointerInfoPtr getPointerInfo;
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static GetPointerPenInfoPtr getPointerPenInfo;
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WinPointerInfo mPenPointerDownInfo;
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WinPointerInfo mPenPointerUpInfo;
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WinPointerInfo mPenPointerUpdateInfo;
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};
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#endif // #ifndef WinPointerEvents_h__
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