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Diffstat (limited to 'widget/windows/nsWinGesture.h')
| -rw-r--r-- | widget/windows/nsWinGesture.h | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/widget/windows/nsWinGesture.h b/widget/windows/nsWinGesture.h new file mode 100644 index 000000000..24c1f6b2d --- /dev/null +++ b/widget/windows/nsWinGesture.h @@ -0,0 +1,288 @@ +/* -*- 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 WinGesture_h__ +#define WinGesture_h__ + +/* + * nsWinGesture - Touch input handling for tablet displays. + */ + +#include "nsdefs.h" +#include <winuser.h> +#include <tpcshrd.h> +#include "nsPoint.h" +#include "mozilla/EventForwards.h" +#include "mozilla/TouchEvents.h" + +// Desktop builds target apis for 502. Win8 Metro builds target 602. +#if WINVER < 0x0602 + +DECLARE_HANDLE(HGESTUREINFO); + +/* + * Gesture flags - GESTUREINFO.dwFlags + */ +#define GF_BEGIN 0x00000001 +#define GF_INERTIA 0x00000002 +#define GF_END 0x00000004 + +/* + * Gesture configuration structure + * - Used in SetGestureConfig and GetGestureConfig + * - Note that any setting not included in either GESTURECONFIG.dwWant or + * GESTURECONFIG.dwBlock will use the parent window's preferences or + * system defaults. + */ +typedef struct tagGESTURECONFIG { + DWORD dwID; // gesture ID + DWORD dwWant; // settings related to gesture ID that are to be turned on + DWORD dwBlock; // settings related to gesture ID that are to be turned off +} GESTURECONFIG, *PGESTURECONFIG; + +/* + * Gesture information structure + * - Pass the HGESTUREINFO received in the WM_GESTURE message lParam into the + * GetGestureInfo function to retrieve this information. + * - If cbExtraArgs is non-zero, pass the HGESTUREINFO received in the WM_GESTURE + * message lParam into the GetGestureExtraArgs function to retrieve extended + * argument information. + */ +typedef struct tagGESTUREINFO { + UINT cbSize; // size, in bytes, of this structure (including variable length Args field) + DWORD dwFlags; // see GF_* flags + DWORD dwID; // gesture ID, see GID_* defines + HWND hwndTarget; // handle to window targeted by this gesture + POINTS ptsLocation; // current location of this gesture + DWORD dwInstanceID; // internally used + DWORD dwSequenceID; // internally used + ULONGLONG ullArguments; // arguments for gestures whose arguments fit in 8 BYTES + UINT cbExtraArgs; // size, in bytes, of extra arguments, if any, that accompany this gesture +} GESTUREINFO, *PGESTUREINFO; +typedef GESTUREINFO const * PCGESTUREINFO; + +/* + * Gesture notification structure + * - The WM_GESTURENOTIFY message lParam contains a pointer to this structure. + * - The WM_GESTURENOTIFY message notifies a window that gesture recognition is + * in progress and a gesture will be generated if one is recognized under the + * current gesture settings. + */ +typedef struct tagGESTURENOTIFYSTRUCT { + UINT cbSize; // size, in bytes, of this structure + DWORD dwFlags; // unused + HWND hwndTarget; // handle to window targeted by the gesture + POINTS ptsLocation; // starting location + DWORD dwInstanceID; // internally used +} GESTURENOTIFYSTRUCT, *PGESTURENOTIFYSTRUCT; + + +/* + * Gesture argument helpers + * - Angle should be a double in the range of -2pi to +2pi + * - Argument should be an unsigned 16-bit value + */ +#define GID_ROTATE_ANGLE_TO_ARGUMENT(_arg_) ((USHORT)((((_arg_) + 2.0 * 3.14159265) / (4.0 * 3.14159265)) * 65535.0)) +#define GID_ROTATE_ANGLE_FROM_ARGUMENT(_arg_) ((((double)(_arg_) / 65535.0) * 4.0 * 3.14159265) - 2.0 * 3.14159265) + +/* + * Gesture configuration flags + */ +#define GC_ALLGESTURES 0x00000001 + +#define GC_ZOOM 0x00000001 + +#define GC_PAN 0x00000001 +#define GC_PAN_WITH_SINGLE_FINGER_VERTICALLY 0x00000002 +#define GC_PAN_WITH_SINGLE_FINGER_HORIZONTALLY 0x00000004 +#define GC_PAN_WITH_GUTTER 0x00000008 +#define GC_PAN_WITH_INERTIA 0x00000010 + +#define GC_ROTATE 0x00000001 + +#define GC_TWOFINGERTAP 0x00000001 + +#define GC_PRESSANDTAP 0x00000001 + +/* + * Gesture IDs + */ +#define GID_BEGIN 1 +#define GID_END 2 +#define GID_ZOOM 3 +#define GID_PAN 4 +#define GID_ROTATE 5 +#define GID_TWOFINGERTAP 6 +#define GID_PRESSANDTAP 7 + +// Maximum number of gestures that can be included +// in a single call to SetGestureConfig / GetGestureConfig +#define GESTURECONFIGMAXCOUNT 256 + +// If specified, GetGestureConfig returns consolidated configuration +// for the specified window and it's parent window chain +#define GCF_INCLUDE_ANCESTORS 0x00000001 + +// Window events we need to respond to or receive +#define WM_GESTURE 0x0119 +#define WM_GESTURENOTIFY 0x011A + +typedef struct _TOUCHINPUT { + LONG x; + LONG y; + HANDLE hSource; + DWORD dwID; + DWORD dwFlags; + DWORD dwMask; + DWORD dwTime; + ULONG_PTR dwExtraInfo; + DWORD cxContact; + DWORD cyContact; +} TOUCHINPUT, *PTOUCHINPUT; + +typedef HANDLE HTOUCHINPUT; + +#define WM_TOUCH 0x0240 + +#define TOUCHEVENTF_MOVE 0x0001 +#define TOUCHEVENTF_DOWN 0x0002 +#define TOUCHEVENTF_UP 0x0004 +#define TOUCHEVENTF_INRANGE 0x0008 +#define TOUCHEVENTF_PRIMARY 0x0010 +#define TOUCHEVENTF_NOCOALESCE 0x0020 +#define TOUCHEVENTF_PEN 0x0040 +#define TOUCHEVENTF_PALM 0x0080 + +#define TOUCHINPUTMASKF_TIMEFROMSYSTEM 0x0001 +#define TOUCHINPUTMASKF_EXTRAINFO 0x0002 +#define TOUCHINPUTMASKF_CONTACTAREA 0x0004 + +#define TOUCH_COORD_TO_PIXEL(C) (C/100) + +#define TWF_FINETOUCH 0x0001 +#define TWF_WANTPALM 0x0002 + +#endif // WINVER < 0x0602 + +// WM_TABLET_QUERYSYSTEMGESTURESTATUS return values +#define TABLET_ROTATE_GESTURE_ENABLE 0x02000000 + +class nsPointWin : public nsIntPoint +{ +public: + nsPointWin& operator=(const POINTS& aPoint) { + x = aPoint.x; y = aPoint.y; + return *this; + } + nsPointWin& operator=(const POINT& aPoint) { + x = aPoint.x; y = aPoint.y; + return *this; + } + nsPointWin& operator=(int val) { + x = y = val; + return *this; + } + void ScreenToClient(HWND hWnd) { + POINT tmp; + tmp.x = x; tmp.y = y; + ::ScreenToClient(hWnd, &tmp); + *this = tmp; + } +}; + +class nsWinGesture +{ +public: + nsWinGesture(); + +public: + bool SetWinGestureSupport(HWND hWnd, mozilla::WidgetGestureNotifyEvent::PanDirection aDirection); + bool ShutdownWinGestureSupport(); + bool RegisterTouchWindow(HWND hWnd); + bool UnregisterTouchWindow(HWND hWnd); + bool GetTouchInputInfo(HTOUCHINPUT hTouchInput, uint32_t cInputs, PTOUCHINPUT pInputs); + bool CloseTouchInputHandle(HTOUCHINPUT hTouchInput); + bool IsAvailable(); + + // Simple gesture process + bool ProcessGestureMessage(HWND hWnd, WPARAM wParam, LPARAM lParam, mozilla::WidgetSimpleGestureEvent& evt); + + // Pan processing + bool IsPanEvent(LPARAM lParam); + bool ProcessPanMessage(HWND hWnd, WPARAM wParam, LPARAM lParam); + bool PanDeltaToPixelScroll(mozilla::WidgetWheelEvent& aWheelEvent); + void UpdatePanFeedbackX(HWND hWnd, int32_t scrollOverflow, bool& endFeedback); + void UpdatePanFeedbackY(HWND hWnd, int32_t scrollOverflow, bool& endFeedback); + void PanFeedbackFinalize(HWND hWnd, bool endFeedback); + +public: + // Helpers + bool GetGestureInfo(HGESTUREINFO hGestureInfo, PGESTUREINFO pGestureInfo); + bool CloseGestureInfoHandle(HGESTUREINFO hGestureInfo); + bool GetGestureExtraArgs(HGESTUREINFO hGestureInfo, UINT cbExtraArgs, PBYTE pExtraArgs); + bool SetGestureConfig(HWND hWnd, UINT cIDs, PGESTURECONFIG pGestureConfig); + bool GetGestureConfig(HWND hWnd, DWORD dwFlags, PUINT pcIDs, PGESTURECONFIG pGestureConfig); + bool BeginPanningFeedback(HWND hWnd); + bool EndPanningFeedback(HWND hWnd); + bool UpdatePanningFeedback(HWND hWnd, LONG offsetX, LONG offsetY, BOOL fInInertia); + +protected: + +private: + // Function prototypes + typedef BOOL (WINAPI * GetGestureInfoPtr)(HGESTUREINFO hGestureInfo, PGESTUREINFO pGestureInfo); + typedef BOOL (WINAPI * CloseGestureInfoHandlePtr)(HGESTUREINFO hGestureInfo); + typedef BOOL (WINAPI * GetGestureExtraArgsPtr)(HGESTUREINFO hGestureInfo, UINT cbExtraArgs, PBYTE pExtraArgs); + typedef BOOL (WINAPI * SetGestureConfigPtr)(HWND hwnd, DWORD dwReserved, UINT cIDs, PGESTURECONFIG pGestureConfig, UINT cbSize); + typedef BOOL (WINAPI * GetGestureConfigPtr)(HWND hwnd, DWORD dwReserved, DWORD dwFlags, PUINT pcIDs, PGESTURECONFIG pGestureConfig, UINT cbSize); + typedef BOOL (WINAPI * BeginPanningFeedbackPtr)(HWND hWnd); + typedef BOOL (WINAPI * EndPanningFeedbackPtr)(HWND hWnd, BOOL fAnimateBack); + typedef BOOL (WINAPI * UpdatePanningFeedbackPtr)(HWND hWnd, LONG offsetX, LONG offsetY, BOOL fInInertia); + typedef BOOL (WINAPI * RegisterTouchWindowPtr)(HWND hWnd, ULONG flags); + typedef BOOL (WINAPI * UnregisterTouchWindowPtr)(HWND hWnd); + typedef BOOL (WINAPI * GetTouchInputInfoPtr)(HTOUCHINPUT hTouchInput, uint32_t cInputs, PTOUCHINPUT pInputs, int32_t cbSize); + typedef BOOL (WINAPI * CloseTouchInputHandlePtr)(HTOUCHINPUT hTouchInput); + + // Static function pointers + static GetGestureInfoPtr getGestureInfo; + static CloseGestureInfoHandlePtr closeGestureInfoHandle; + static GetGestureExtraArgsPtr getGestureExtraArgs; + static SetGestureConfigPtr setGestureConfig; + static GetGestureConfigPtr getGestureConfig; + static BeginPanningFeedbackPtr beginPanningFeedback; + static EndPanningFeedbackPtr endPanningFeedback; + static UpdatePanningFeedbackPtr updatePanningFeedback; + static RegisterTouchWindowPtr registerTouchWindow; + static UnregisterTouchWindowPtr unregisterTouchWindow; + static GetTouchInputInfoPtr getTouchInputInfo; + static CloseTouchInputHandlePtr closeTouchInputHandle; + + // Delay load info + bool InitLibrary(); + + static HMODULE sLibraryHandle; + static const wchar_t kGestureLibraryName[]; + + // Pan and feedback state + nsPointWin mPanIntermediate; + nsPointWin mPanRefPoint; + nsPointWin mPixelScrollDelta; + bool mPanActive; + bool mFeedbackActive; + bool mXAxisFeedback; + bool mYAxisFeedback; + bool mPanInertiaActive; + nsPointWin mPixelScrollOverflow; + + // Zoom state + double mZoomIntermediate; + + // Rotate state + double mRotateIntermediate; +}; + +#endif /* WinGesture_h__ */ + + |