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1 using System.Collections.Generic;
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2 using System.Windows.Forms;
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3
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4 namespace ShortcutKeyFinder
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5 {
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6 /// <summary>Provides a means to encode and decode hotkeys in the format expected by the Win32 API</summary>
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7 class Hotkey
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8 {
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9 private List<Keys> _modifierKeys = new List<Keys>() { Keys.ShiftKey, Keys.ControlKey, Keys.Menu };
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10 // Windows API values
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11 public ushort HOTKEYF_SHIFT = 0x01 << 8;
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12 public ushort HOTKEYF_CONTROL = 0x02 << 8;
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13 public ushort HOTKEYF_ALT = 0x04 << 8;
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14 public ushort HOTKEYF_EXT = 0x08 << 8;
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15
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16 /// <summary>Raw hotkey value to use in Win32 functions</summary>
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17 public ushort RawHotkey { get; set; }
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18
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19 /// <summary>Shift key state</summary>
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20 public bool Shift
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21 {
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22 get { return (RawHotkey & HOTKEYF_SHIFT) != 0; }
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23 set { if (value) RawHotkey |= HOTKEYF_SHIFT; else RawHotkey &= (ushort)~HOTKEYF_SHIFT; }
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24 }
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25
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26 /// <summary>Control key state</summary>
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27 public bool Control
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28 {
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29 get { return (RawHotkey & HOTKEYF_CONTROL) != 0; }
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30 set { if (value) RawHotkey |= HOTKEYF_CONTROL; else RawHotkey &= (ushort)~HOTKEYF_CONTROL; }
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31 }
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32
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33 /// <summary>Alt key state</summary>
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34 public bool Alt
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35 {
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36 get { return (RawHotkey & HOTKEYF_ALT) != 0; }
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37 set { if (value) RawHotkey |= HOTKEYF_ALT; else RawHotkey &= (ushort)~HOTKEYF_ALT; }
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38 }
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39
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40 /// <summary>Ext key state</summary>
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41 /// <remarks>Probably useless nowadays</remarks>
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42 public bool Ext
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43 {
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44 get { return (RawHotkey & HOTKEYF_EXT) != 0; }
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45 set { if (value) RawHotkey |= HOTKEYF_EXT; else RawHotkey &= (ushort)~HOTKEYF_EXT; }
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46 }
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47
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48 /// <summary>The key code portion of the hotkey data</summary>
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49 /// <remarks>The key code is stored in the lower byte of the hotkey</remarks>
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50 public byte KeyCode
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51 {
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52 get { return (byte)(RawHotkey & 0x00FF); }
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53 set { RawHotkey = (ushort)((RawHotkey & 0xFF00) | value); }
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54 }
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55
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56 /// <summary>Default constructor</summary>
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57 public Hotkey() { }
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58
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59 /// <summary>Constructor with hotkey initializer</summary>
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60 /// <param name="hotkey">Hotkey value for Win32 API calls</param>
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61 public Hotkey(ushort hotkey)
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62 {
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63 RawHotkey = hotkey;
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64 }
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65
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66 /// <summary>Converts the hotkey data into a friendly string</summary>
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67 public override string ToString()
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68 {
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69 return string.Format("{0}{1}{2}{3}{4}",
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70 Control ? "Ctrl+" : "",
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71 Alt ? "Alt+" : "",
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72 Shift ? "Shift+" : "",
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73 Ext ? "Ext+" : "",
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74 _modifierKeys.Contains((Keys)KeyCode) ? "" : new KeysConverter().ConvertToString((int)KeyCode));
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75 }
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76
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77 /// <summary>Checks if two Hotkey objects have the same key combination</summary>
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78 public override bool Equals(object obj)
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79 {
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80 Hotkey hotkey = obj as Hotkey;
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81 return hotkey != null && hotkey.RawHotkey == RawHotkey;
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82 }
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83
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84 public override int GetHashCode()
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85 {
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86 return RawHotkey.GetHashCode();
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87 }
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88 }
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89 }
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