зеркало из https://github.com/mozilla/gecko-dev.git
138 строки
5.0 KiB
C++
138 строки
5.0 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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// 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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