|
1 /* |
|
2 * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). |
|
3 * All rights reserved. |
|
4 * This component and the accompanying materials are made available |
|
5 * under the terms of "Eclipse Public License v1.0" |
|
6 * which accompanies this distribution, and is available |
|
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
8 * |
|
9 * Initial Contributors: |
|
10 * Nokia Corporation - initial contribution. |
|
11 * |
|
12 * Contributors: |
|
13 * |
|
14 * Description: Device state (touch mode, screen orientation) handler |
|
15 * |
|
16 */ |
|
17 |
|
18 |
|
19 #ifndef TSDEVICESTATE_H_ |
|
20 #define TSDEVICESTATE_H_ |
|
21 |
|
22 #include <e32base.h> |
|
23 #include "tsappui.h" |
|
24 #include "tsproplistener.h" |
|
25 |
|
26 /** |
|
27 * Interface for getting notifications about screen orientation |
|
28 * and/or touch state etc. changes. |
|
29 */ |
|
30 class MTsDeviceStateObserver |
|
31 { |
|
32 public: |
|
33 /** |
|
34 * Type of change. |
|
35 */ |
|
36 enum TChangeType |
|
37 { |
|
38 // screen orientation (portrait <=> landscape) has changed |
|
39 EOrientation = 0x01, |
|
40 // touch enabled/disabled status has changed |
|
41 ETouchState = 0x02, |
|
42 // skin has changed |
|
43 ESkin = 0x04, |
|
44 // input device mode change |
|
45 EDeviceType = 0x08, |
|
46 // all of the above |
|
47 EAny = 0xFF |
|
48 }; |
|
49 |
|
50 /** |
|
51 * Called when a change, to which the observer is registered, |
|
52 * has happened. |
|
53 */ |
|
54 virtual void HandleDeviceStateChanged( TChangeType aChangeType ) = 0; |
|
55 }; |
|
56 |
|
57 /** |
|
58 * Class for keeping track of screen orientation and touch enabled/disabled changes. |
|
59 */ |
|
60 class CTsDeviceState : |
|
61 public CBase, |
|
62 public MTsPropertyChangeObserver |
|
63 { |
|
64 public: |
|
65 /** |
|
66 * Enumeration for TouchState(). |
|
67 */ |
|
68 enum TTouchState |
|
69 { |
|
70 ETouchEnabled, |
|
71 ETouchDisabled |
|
72 }; |
|
73 |
|
74 /** |
|
75 * Enumeration for Orientation(). |
|
76 */ |
|
77 enum TOrientation |
|
78 { |
|
79 EPortrait, |
|
80 ELandscape |
|
81 }; |
|
82 |
|
83 /** |
|
84 * Enumeration for DeviceType(). |
|
85 */ |
|
86 enum TDeviceType |
|
87 { |
|
88 EHybrid = 0, |
|
89 EFullTouch = 1 |
|
90 }; |
|
91 |
|
92 /** |
|
93 * Creates a new instance. |
|
94 */ |
|
95 static CTsDeviceState* NewL(); |
|
96 |
|
97 /** |
|
98 * Destructor. |
|
99 */ |
|
100 ~CTsDeviceState(); |
|
101 |
|
102 /** |
|
103 * Returns the current state of touch awareness. |
|
104 */ |
|
105 TTouchState TouchState() const; |
|
106 |
|
107 /** |
|
108 * Returns the current screen orientation. |
|
109 */ |
|
110 TOrientation Orientation() const; |
|
111 |
|
112 /** |
|
113 * Returns the current device input type. |
|
114 */ |
|
115 TDeviceType DeviceType() const; |
|
116 |
|
117 /** |
|
118 * Registers an observer. |
|
119 * @param aObserver ref to observer |
|
120 * (same observer can be added several times with different mask if needed) |
|
121 * @param aMask bitmask composed from TChangeType values |
|
122 * (when to notify the observer) |
|
123 */ |
|
124 void AddObserverL( MTsDeviceStateObserver& aObserver, TInt aMask ); |
|
125 |
|
126 /** |
|
127 * Deregisters the given observer. |
|
128 * @param aObserver ref to observer |
|
129 */ |
|
130 void RemoveObserver( MTsDeviceStateObserver& aObserver ); |
|
131 |
|
132 /** |
|
133 * Called from appui. |
|
134 */ |
|
135 void HandleResourceChange( TInt aType ); |
|
136 |
|
137 //From MTsPropertyChangeObserver |
|
138 public: |
|
139 /** |
|
140 * Observer interface for getting notifications about a P&S property change. |
|
141 */ |
|
142 virtual void PropertyChanged( TUid aCategory, TUint aKey ); |
|
143 private: |
|
144 /** |
|
145 * Constructor. |
|
146 */ |
|
147 CTsDeviceState(); |
|
148 |
|
149 /** |
|
150 * Performs 2nd phase construction. |
|
151 */ |
|
152 void ConstructL(); |
|
153 |
|
154 /** |
|
155 * Checks if touch is enabled or not and performs |
|
156 * appropriate actions. |
|
157 */ |
|
158 void CheckTouchState(); |
|
159 |
|
160 /** |
|
161 * Checks the screen orientation and performs |
|
162 * appropriate actions. |
|
163 */ |
|
164 void CheckOrientation(); |
|
165 |
|
166 /** |
|
167 * Checks the device input type. |
|
168 */ |
|
169 void CheckDeviceType(); |
|
170 |
|
171 /** |
|
172 * Notifies all observers that are registered for the given type. |
|
173 */ |
|
174 void NotifyObservers( MTsDeviceStateObserver::TChangeType aType ); |
|
175 |
|
176 class SObserver; |
|
177 |
|
178 /** |
|
179 * Identity function to perform comparison between observer array items. |
|
180 */ |
|
181 static TBool ObserverIdentity( const SObserver& aA, const SObserver& aB ); |
|
182 |
|
183 private: |
|
184 /** |
|
185 * Current touch enabled/disabled state. |
|
186 */ |
|
187 TTouchState iTouchState; |
|
188 |
|
189 /** |
|
190 * Current screen orientation. |
|
191 */ |
|
192 TOrientation iOrientation; |
|
193 |
|
194 /** |
|
195 * Current the device input type. |
|
196 */ |
|
197 TDeviceType iDeviceType; |
|
198 |
|
199 /** |
|
200 * Observer array entry struct. |
|
201 */ |
|
202 struct SObserver |
|
203 { |
|
204 TInt iMask; |
|
205 MTsDeviceStateObserver* iObserver; // not owned |
|
206 SObserver( TInt aMask, MTsDeviceStateObserver* aObserver ) |
|
207 : iMask( aMask ), iObserver( aObserver ) { } |
|
208 }; |
|
209 |
|
210 /** |
|
211 * Observer array. |
|
212 */ |
|
213 RArray<SObserver> iObservers; |
|
214 |
|
215 /** |
|
216 * Counter to indicate that we have not yet returned |
|
217 * from a previous HandleResourceChange. |
|
218 */ |
|
219 TInt iResChangeActiveCount; |
|
220 |
|
221 /** |
|
222 * Flip status change observer. |
|
223 */ |
|
224 CTsPropertyListener* iFlipStatusObserver; |
|
225 }; |
|
226 |
|
227 #endif // TSDEVICESTATE_H_ |