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