118 lines
4.9 KiB
C#
118 lines
4.9 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Windows.Input;
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namespace ytLive.Services;
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/// <summary>
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/// A modifier+key chord (e.g. Ctrl+F10, Alt+F1, F5).
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/// Stored in the Settings table as "modifiers+vk" (both uint, decimal).
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/// </summary>
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public sealed record HotkeyChord(uint Modifiers, uint VirtualKey)
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{
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public const uint MOD_ALT = 0x0001;
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public const uint MOD_CONTROL = 0x0002;
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public const uint MOD_SHIFT = 0x0004;
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public const uint MOD_WIN = 0x0008;
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private static readonly Dictionary<uint, string> ModifierDisplay = new()
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{
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[MOD_CONTROL] = "Ctrl",
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[MOD_ALT] = "Alt",
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[MOD_SHIFT] = "Shift",
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[MOD_WIN] = "Win",
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};
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/// <summary>Storage format: "modifiers+vk" (both decimal uint).</summary>
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public override string ToString() => $"{Modifiers}+{VirtualKey}";
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/// <summary>Parse from storage format ("modifiers+vk").</summary>
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public static HotkeyChord ParseStorage(string s)
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{
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var parts = s.Split('+');
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if (parts.Length != 2 ||
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!uint.TryParse(parts[0], out var mod) ||
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!uint.TryParse(parts[1], out var vk))
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throw new FormatException($"Invalid hotkey storage format: {s}");
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return new HotkeyChord(mod, vk);
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}
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/// <summary>Build from WPF Key + ModifierKeys (used during key capture).</summary>
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public static HotkeyChord FromWpf(Key key, ModifierKeys modifiers)
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{
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uint vk = (uint)KeyInterop.VirtualKeyFromKey(key);
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uint mod = 0;
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if (modifiers.HasFlag(ModifierKeys.Control)) mod |= MOD_CONTROL;
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if (modifiers.HasFlag(ModifierKeys.Alt)) mod |= MOD_ALT;
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if (modifiers.HasFlag(ModifierKeys.Shift)) mod |= MOD_SHIFT;
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if (modifiers.HasFlag(ModifierKeys.Windows)) mod |= MOD_WIN;
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return new HotkeyChord(mod, vk);
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}
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/// <summary>Human-readable display string: "Ctrl+F10", "Alt+F1", "F5".</summary>
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public string ToDisplayString()
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{
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var name = GetKeyName(VirtualKey);
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if (Modifiers == 0) return name;
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var sb = new System.Text.StringBuilder();
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if ((Modifiers & MOD_CONTROL) != 0) { sb.Append("Ctrl"); sb.Append('+'); }
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if ((Modifiers & MOD_ALT) != 0) { sb.Append("Alt"); sb.Append('+'); }
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if ((Modifiers & MOD_SHIFT) != 0) { sb.Append("Shift"); sb.Append('+'); }
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if ((Modifiers & MOD_WIN) != 0) { sb.Append("Win"); sb.Append('+'); }
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sb.Append(name);
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return sb.ToString();
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}
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/// <summary>Human-readable display string for a binding that may be null (unbound).</summary>
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public static string DisplayString(HotkeyChord? chord) =>
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chord?.ToDisplayString() ?? "None";
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private static string GetKeyName(uint vk) =>
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KeyNames.TryGetValue(vk, out var name) ? name : $"VK 0x{vk:X2}";
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private static readonly Dictionary<uint, string> KeyNames = new()
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{
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// Letters A-Z (0x41-0x5A)
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[0x41]="A",[0x42]="B",[0x43]="C",[0x44]="D",[0x45]="E",
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[0x46]="F",[0x47]="G",[0x48]="H",[0x49]="I",[0x4A]="J",
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[0x4B]="K",[0x4C]="L",[0x4D]="M",[0x4E]="N",[0x4F]="O",
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[0x50]="P",[0x51]="Q",[0x52]="R",[0x53]="S",[0x54]="T",
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[0x55]="U",[0x56]="V",[0x57]="W",[0x58]="X",[0x59]="Y",
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[0x5A]="Z",
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// Digits 0-9 (0x30-0x39)
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[0x30]="0",[0x31]="1",[0x32]="2",[0x33]="3",[0x34]="4",
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[0x35]="5",[0x36]="6",[0x37]="7",[0x38]="8",[0x39]="9",
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// Function keys F1-F24 (0x70-0x87)
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[0x70]="F1",[0x71]="F2",[0x72]="F3",[0x73]="F4",[0x74]="F5",
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[0x75]="F6",[0x76]="F7",[0x77]="F8",[0x78]="F9",[0x79]="F10",
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[0x7A]="F11",[0x7B]="F12",[0x7C]="F13",[0x7D]="F14",
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[0x7E]="F15",[0x7F]="F16",[0x80]="F17",[0x81]="F18",
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[0x82]="F19",[0x83]="F20",[0x84]="F21",[0x85]="F22",
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[0x86]="F23",[0x87]="F24",
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// Navigation
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[0x08]="Bksp",[0x09]="Tab",[0x0D]="Enter",[0x13]="Pause",
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[0x14]="CapsLock",[0x1B]="Esc",[0x20]="Space",[0x21]="PgUp",
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[0x22]="PgDn",[0x23]="End",[0x24]="Home",[0x25]="←",
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[0x26]="↑",[0x27]="→",[0x28]="↓",[0x2C]="PrintScreen",
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[0x2D]="Insert",[0x2E]="Delete",
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// Numpad
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[0x60]="Num0",[0x61]="Num1",[0x62]="Num2",[0x63]="Num3",
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[0x64]="Num4",[0x65]="Num5",[0x66]="Num6",[0x67]="Num7",
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[0x68]="Num8",[0x69]="Num9",[0x6A]="*",[0x6B]="+",
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[0x6C]=".",[0x6D]="-",[0x6E]=".",[0x6F]="/",
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[0x90]="NumLock",[0x91]="ScrollLock",
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// Punctuation / symbols
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[0xBA]=";",[0xBB]="=",[0xBC]=",",[0xBD]="-",[0xBE]=".",
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[0xBF]="/",[0xC0]="`",[0xDB]="[",[0xDC]="\\",
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[0xDD]="]",[0xDE]="'",
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// Media / browser / apps
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[0xA0]="LShift",[0xA1]="RShift",
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[0xA2]="LCtrl",[0xA3]="RCtrl",
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[0xA4]="LAlt",[0xA5]="RAlt",
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[0xAD]="Mute",[0xAE]="VolDown",[0xAF]="VolUp",
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[0xB0]="Next",[0xB1]="Prev",[0xB3]="Stop",[0xB5]="Play",
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[0xE2]="OEM_102",
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};
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}
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