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-rw-r--r--widget/windows/WinPointerEvents.h151
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diff --git a/widget/windows/WinPointerEvents.h b/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 "touchinjection_sdk80.h"
+#include <windef.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
+
+/*
+ * 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 function pointers
+ static GetPointerTypePtr getPointerType;
+ static GetPointerInfoPtr getPointerInfo;
+ static GetPointerPenInfoPtr getPointerPenInfo;
+ WinPointerInfo mPenPointerDownInfo;
+ WinPointerInfo mPenPointerUpInfo;
+ WinPointerInfo mPenPointerUpdateInfo;
+};
+
+#endif // #ifndef WinPointerEvents_h__