gecko-dev/widget/windows/WinPointerEvents.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 WinPointerEvents_h__
#define WinPointerEvents_h__
#include "mozilla/MouseEvents.h"
#include "nsWindowBase.h"
// Define PointerEvent related macros and structures when building code on
// Windows version before Win8.
#if WINVER < 0x0602
// These definitions are copied from WinUser.h. Some of them are not used but
// keep them here for future usage.
#define WM_NCPOINTERUPDATE 0x0241
#define WM_NCPOINTERDOWN 0x0242
#define WM_NCPOINTERUP 0x0243
#define WM_POINTERUPDATE 0x0245
#define WM_POINTERDOWN 0x0246
#define WM_POINTERUP 0x0247
#define WM_POINTERENTER 0x0249
#define WM_POINTERLEAVE 0x024A
#define WM_POINTERACTIVATE 0x024B
#define WM_POINTERCAPTURECHANGED 0x024C
#define WM_TOUCHHITTESTING 0x024D
#define WM_POINTERWHEEL 0x024E
#define WM_POINTERHWHEEL 0x024F
#define DM_POINTERHITTEST 0x0250
typedef UINT32 PEN_FLAGS;
#define PEN_FLAG_NONE 0x00000000 // Default
#define PEN_FLAG_BARREL 0x00000001 // The barrel button is pressed
#define PEN_FLAG_INVERTED 0x00000002 // The pen is inverted
#define PEN_FLAG_ERASER 0x00000004 // The eraser button is pressed
typedef UINT32 PEN_MASK;
#define PEN_MASK_NONE 0x00000000 // Default - none of the optional fields are valid
#define PEN_MASK_PRESSURE 0x00000001 // The pressure field is valid
#define PEN_MASK_ROTATION 0x00000002 // The rotation field is valid
#define PEN_MASK_TILT_X 0x00000004 // The tiltX field is valid
#define PEN_MASK_TILT_Y 0x00000008 // The tiltY field is valid
typedef struct tagPOINTER_PEN_INFO {
POINTER_INFO pointerInfo;
PEN_FLAGS penFlags;
PEN_MASK penMask;
UINT32 pressure;
UINT32 rotation;
INT32 tiltX;
INT32 tiltY;
} POINTER_PEN_INFO;
/*
* Flags that appear in pointer input message parameters
*/
#define POINTER_MESSAGE_FLAG_NEW 0x00000001 // New pointer
#define POINTER_MESSAGE_FLAG_INRANGE 0x00000002 // Pointer has not departed
#define POINTER_MESSAGE_FLAG_INCONTACT 0x00000004 // Pointer is in contact
#define POINTER_MESSAGE_FLAG_FIRSTBUTTON 0x00000010 // Primary action
#define POINTER_MESSAGE_FLAG_SECONDBUTTON 0x00000020 // Secondary action
#define POINTER_MESSAGE_FLAG_THIRDBUTTON 0x00000040 // Third button
#define POINTER_MESSAGE_FLAG_FOURTHBUTTON 0x00000080 // Fourth button
#define POINTER_MESSAGE_FLAG_FIFTHBUTTON 0x00000100 // Fifth button
#define POINTER_MESSAGE_FLAG_PRIMARY 0x00002000 // Pointer is primary
#define POINTER_MESSAGE_FLAG_CONFIDENCE 0x00004000 // Pointer is considered unlikely to be accidental
#define POINTER_MESSAGE_FLAG_CANCELED 0x00008000 // Pointer is departing in an abnormal manner
/*
* Macros to retrieve information from pointer input message parameters
*/
#define GET_POINTERID_WPARAM(wParam) (LOWORD(wParam))
#define IS_POINTER_FLAG_SET_WPARAM(wParam, flag) (((DWORD)HIWORD(wParam) & (flag)) == (flag))
#define IS_POINTER_NEW_WPARAM(wParam) IS_POINTER_FLAG_SET_WPARAM(wParam, POINTER_MESSAGE_FLAG_NEW)
#define IS_POINTER_INRANGE_WPARAM(wParam) IS_POINTER_FLAG_SET_WPARAM(wParam, POINTER_MESSAGE_FLAG_INRANGE)
#define IS_POINTER_INCONTACT_WPARAM(wParam) IS_POINTER_FLAG_SET_WPARAM(wParam, POINTER_MESSAGE_FLAG_INCONTACT)
#define IS_POINTER_FIRSTBUTTON_WPARAM(wParam) IS_POINTER_FLAG_SET_WPARAM(wParam, POINTER_MESSAGE_FLAG_FIRSTBUTTON)
#define IS_POINTER_SECONDBUTTON_WPARAM(wParam) IS_POINTER_FLAG_SET_WPARAM(wParam, POINTER_MESSAGE_FLAG_SECONDBUTTON)
#define IS_POINTER_THIRDBUTTON_WPARAM(wParam) IS_POINTER_FLAG_SET_WPARAM(wParam, POINTER_MESSAGE_FLAG_THIRDBUTTON)
#define IS_POINTER_FOURTHBUTTON_WPARAM(wParam) IS_POINTER_FLAG_SET_WPARAM(wParam, POINTER_MESSAGE_FLAG_FOURTHBUTTON)
#define IS_POINTER_FIFTHBUTTON_WPARAM(wParam) IS_POINTER_FLAG_SET_WPARAM(wParam, POINTER_MESSAGE_FLAG_FIFTHBUTTON)
#define IS_POINTER_PRIMARY_WPARAM(wParam) IS_POINTER_FLAG_SET_WPARAM(wParam, POINTER_MESSAGE_FLAG_PRIMARY)
#define HAS_POINTER_CONFIDENCE_WPARAM(wParam) IS_POINTER_FLAG_SET_WPARAM(wParam, POINTER_MESSAGE_FLAG_CONFIDENCE)
#define IS_POINTER_CANCELED_WPARAM(wParam) IS_POINTER_FLAG_SET_WPARAM(wParam, POINTER_MESSAGE_FLAG_CANCELED)
/*
* WM_POINTERACTIVATE return codes
*/
#define PA_ACTIVATE MA_ACTIVATE
#define PA_NOACTIVATE MA_NOACTIVATE
#endif // WINVER < 0x0602
/******************************************************************************
* WinPointerInfo
*
* This is a helper class to handle WM_POINTER*. It only supports Win8 or later.
*
******************************************************************************/
class WinPointerInfo final : public mozilla::WidgetPointerHelper
{
public:
WinPointerInfo()
: WidgetPointerHelper()
, mPressure(0)
, mButtons(0)
{
}
WinPointerInfo(uint32_t aPointerId, uint32_t aTiltX, uint32_t aTiltY,
float aPressure, int16_t aButtons)
: WidgetPointerHelper(aPointerId, aTiltX, aTiltY)
, mPressure(aPressure)
, mButtons(aButtons)
{
}
float mPressure;
int16_t mButtons;
};
class WinPointerEvents final
{
public:
explicit WinPointerEvents();
public:
bool ShouldHandleWinPointerMessages(UINT aMsg, WPARAM aWParam);
uint32_t GetPointerId(WPARAM aWParam)
{
return GET_POINTERID_WPARAM(aWParam);
}
bool GetPointerType(uint32_t aPointerId, POINTER_INPUT_TYPE *aPointerType);
POINTER_INPUT_TYPE GetPointerType(uint32_t aPointerId);
bool GetPointerInfo(uint32_t aPointerId, POINTER_INFO *aPointerInfo);
bool GetPointerPenInfo(uint32_t aPointerId, POINTER_PEN_INFO *aPenInfo);
bool ShouldEnableInkCollector();
bool ShouldRollupOnPointerEvent(UINT aMsg, WPARAM aWParam);
bool ShouldFirePointerEventByWinPointerMessages();
WinPointerInfo* GetCachedPointerInfo(UINT aMsg, WPARAM aWParam);
void ConvertAndCachePointerInfo(UINT aMsg, WPARAM aWParam);
void ConvertAndCachePointerInfo(WPARAM aWParam, WinPointerInfo* aInfo);
private:
// Function prototypes
typedef BOOL (WINAPI* GetPointerTypePtr)(uint32_t aPointerId,
POINTER_INPUT_TYPE *aPointerType);
typedef BOOL (WINAPI* GetPointerInfoPtr)(uint32_t aPointerId,
POINTER_INFO *aPointerInfo);
typedef BOOL (WINAPI* GetPointerPenInfoPtr)(uint32_t aPointerId,
POINTER_PEN_INFO *aPenInfo);
void InitLibrary();
static HMODULE sLibraryHandle;
static const wchar_t kPointerLibraryName[];
static bool sPointerEventEnabled;
static bool sFirePointerEventsByWinPointerMessages;
// Static function pointers
static GetPointerTypePtr getPointerType;
static GetPointerInfoPtr getPointerInfo;
static GetPointerPenInfoPtr getPointerPenInfo;
WinPointerInfo mPenPointerDownInfo;
WinPointerInfo mPenPointerUpInfo;
WinPointerInfo mPenPointerUpdateInfo;
};
#endif // #ifndef WinPointerEvents_h__