1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
/* -*- 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"
// 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__ */
|
