2 * Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
4 * Licensed under the Apache License, Version 2.0 (the License);
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an AS IS BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 using System.Runtime.InteropServices;
23 /// The EvasKeyEventArgs is an EvasKey EventArgs
25 public class EvasKeyEventArgs : EventArgs
27 IntPtr _nativeEventInfo;
29 EvasEventFlag _eventFlags;
32 /// BackButton name in Platform
34 public const string PlatformBackButtonName = "XF86Back";
36 /// MenuButton name in Platform
38 public const string PlatformMenuButtonName = "XF86Menu";
40 /// HomeButton name in Platform
42 public const string PlatformHomeButtonName = "XF86Home";
45 /// Gets the name of Key
47 public string KeyName { get; private set; }
49 public EvasEventFlag Flags
53 IntPtr offset = Marshal.OffsetOf<EvasEventKeyDown>("event_flags");
54 return (EvasEventFlag)Marshal.ReadIntPtr(_nativeEventInfo, (int)offset);
58 IntPtr offset = Marshal.OffsetOf<EvasEventKeyDown>("event_flags");
59 Marshal.WriteIntPtr(_nativeEventInfo, (int)offset, (IntPtr)value);
63 EvasKeyEventArgs(IntPtr info)
65 _nativeEventInfo = info;
66 var evt = Marshal.PtrToStructure<EvasEventKeyDown>(info);
67 KeyName = evt.keyname;
71 /// Creates and initializes a new instance of the EvasKeyEventArgs class.
73 /// <param name="data">data info</param>
74 /// <param name="obj"> object </param>
75 /// <param name="info">information </param>
76 /// <returns>EvasKey eventArgs</returns>
77 static public EvasKeyEventArgs Create(IntPtr data, IntPtr obj, IntPtr info)
79 return new EvasKeyEventArgs(info);
83 /// Event structure for Key Down event callbacks.
85 [StructLayout(LayoutKind.Sequential)]
86 struct EvasEventKeyDown
89 /// Name string of the key pressed
91 public string keyname;
93 /// Data to be passed to the event
97 /// Modifier keys pressed during the event
99 public IntPtr modifiers;
105 /// Logical key: (example, shift+1 == exclamation)
109 /// UTF8 string if this keystroke has produced a visible string to be ADDED
113 /// UTF8 string if this keystroke has modified a string in the middle of being composed - this string replaces the previous one
115 public string compose;
117 public uint timestamp;
122 public EvasEventFlag event_flags;
138 public enum EvasEventFlag
141 /// No fancy flags set
145 ///This event is being delivered but should be put "on hold" until the on hold flag is unset. the event should be used for informational purposes and maybe some indications visually, but not actually perform anything