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const Key = @This();
/// Modifier Keys for a Key Match Event.pub const Modifiers = packed struct(u8) { shift: bool = false, alt: bool = false, ctrl: bool = false, super: bool = false, hyper: bool = false, meta: bool = false, caps_lock: bool = false, num_lock: bool = false,
pub fn eql(self: Modifiers, other: Modifiers) bool { const a: u8 = @bitCast(self); const b: u8 = @bitCast(other); return a == b; }};
/// Flags for the Kitty Protocol.pub const KittyFlags = packed struct(u5) { disambiguate: bool = true, report_events: bool = false, report_alternate_keys: bool = true, report_all_as_ctl_seqs: bool = true, report_text: bool = true,};
/// the unicode codepoint of the key event.codepoint: u21,
/// the text generated from the key event. The underlying slice has a limited/// lifetime. Vaxis maintains an internal ring buffer to temporarily store text./// If the application needs these values longer than the lifetime of the event/// it must copy the data.text: ?[]const u8 = null,
/// the shifted codepoint of this key event. This will only be present if the/// Shift modifier was used to generate the eventshifted_codepoint: ?u21 = null,
/// the key that would have been pressed on a standard keyboard layout. This is/// useful for shortcut matchingbase_layout_codepoint: ?u21 = null,
mods: Modifiers = .{},
// matches follows a loose matching algorithm for key matches.// 1. If the codepoint and modifiers are exact matches, after removing caps_lock// and num_lock// 2. If the utf8 encoding of the codepoint matches the text, after removing// num_lock// 3. If there is a shifted codepoint and it matches after removing the shift// modifier from self, after removing caps_lock and num_lockpub fn matches(self: Key, cp: u21, mods: Modifiers) bool { // rule 1 if (self.matchExact(cp, mods)) return true;
// rule 2 if (self.matchText(cp, mods)) return true;
// rule 3 if (self.matchShiftedCodepoint(cp, mods)) return true;
return false;}
/// matches against any of the provided codepoints.pub fn matchesAny(self: Key, cps: []const u21, mods: Modifiers) bool { for (cps) |cp| { if (self.matches(cp, mods)) return true; } return false;}
/// matches base layout codes, useful for shortcut matching when an alternate key/// layout is usedpub fn matchShortcut(self: Key, cp: u21, mods: Modifiers) bool { if (self.base_layout_codepoint == null) return false; return cp == self.base_layout_codepoint.? and std.meta.eql(self.mods, mods);}
/// matches keys that aren't upper case versions when shifted. For example, shift/// + semicolon produces a colon. The key can be matched against shift +/// semicolon or just colon...or shift + ctrl + ; or just ctrl + :pub fn matchShiftedCodepoint(self: Key, cp: u21, mods: Modifiers) bool { if (self.shifted_codepoint == null) return false; if (!self.mods.shift) return false; var self_mods = self.mods; self_mods.shift = false; self_mods.caps_lock = false; self_mods.num_lock = false; var tgt_mods = mods; tgt_mods.caps_lock = false; tgt_mods.num_lock = false; return cp == self.shifted_codepoint.? and std.meta.eql(self_mods, mods);}
/// matches when the utf8 encoding of the codepoint and relevant mods matches the/// text of the key. This function will consume Shift and Caps Lock when matchingpub fn matchText(self: Key, cp: u21, mods: Modifiers) bool { // return early if we have no text if (self.text == null) return false;
var self_mods = self.mods; self_mods.num_lock = false; self_mods.shift = false; self_mods.caps_lock = false; var arg_mods = mods;
// TODO: Use zg case_data for full unicode support. We'll need to allocate the case data // somewhere const _cp: u21 = if (cp < 128 and (mods.shift or mods.caps_lock)) // Uppercase our codepoint std.ascii.toUpper(@intCast(cp)) else cp;
arg_mods.num_lock = false; arg_mods.shift = false; arg_mods.caps_lock = false;
var buf: [4]u8 = undefined; const n = std.unicode.utf8Encode(_cp, &buf) catch return false; return std.mem.eql(u8, self.text.?, buf[0..n]) and std.meta.eql(self_mods, arg_mods);}
// The key must exactly match the codepoint and modifiers. caps_lock and// num_lock are removed before matchingpub fn matchExact(self: Key, cp: u21, mods: Modifiers) bool { var self_mods = self.mods; self_mods.caps_lock = false; self_mods.num_lock = false; var tgt_mods = mods; tgt_mods.caps_lock = false; tgt_mods.num_lock = false; return self.codepoint == cp and std.meta.eql(self_mods, tgt_mods);}
/// True if the key is a single modifier (ie: left_shift)pub fn isModifier(self: Key) bool { return self.codepoint == left_shift or self.codepoint == left_alt or self.codepoint == left_super or self.codepoint == left_hyper or self.codepoint == left_control or self.codepoint == left_meta or self.codepoint == right_shift or self.codepoint == right_alt or self.codepoint == right_super or self.codepoint == right_hyper or self.codepoint == right_control or self.codepoint == right_meta;}
// a few special keys that we encode as their actual ascii valuepub const tab: u21 = 0x09;pub const enter: u21 = 0x0D;pub const escape: u21 = 0x1B;pub const space: u21 = 0x20;pub const backspace: u21 = 0x7F;
/// multicodepoint is a key which generated text but cannot be expressed as a/// single codepoint. The value is the maximum unicode codepoint + 1pub const multicodepoint: u21 = 1_114_112 + 1;
// kitty encodes these keys directly in the private use area. We reuse those// mappingspub const insert: u21 = 57348;pub const delete: u21 = 57349;pub const left: u21 = 57350;pub const right: u21 = 57351;pub const up: u21 = 57352;pub const down: u21 = 57353;pub const page_up: u21 = 57354;pub const page_down: u21 = 57355;pub const home: u21 = 57356;pub const end: u21 = 57357;pub const caps_lock: u21 = 57358;pub const scroll_lock: u21 = 57359;pub const num_lock: u21 = 57360;pub const print_screen: u21 = 57361;pub const pause: u21 = 57362;pub const menu: u21 = 57363;pub const f1: u21 = 57364;pub const f2: u21 = 57365;pub const f3: u21 = 57366;pub const f4: u21 = 57367;pub const f5: u21 = 57368;pub const f6: u21 = 57369;pub const f7: u21 = 57370;pub const f8: u21 = 57371;pub const f9: u21 = 57372;pub const f10: u21 = 57373;pub const f11: u21 = 57374;pub const f12: u21 = 57375;pub const f13: u21 = 57376;pub const f14: u21 = 57377;pub const f15: u21 = 57378;pub const @"f16": u21 = 57379;pub const f17: u21 = 57380;pub const f18: u21 = 57381;pub const f19: u21 = 57382;pub const f20: u21 = 57383;pub const f21: u21 = 57384;pub const f22: u21 = 57385;pub const f23: u21 = 57386;pub const f24: u21 = 57387;pub const f25: u21 = 57388;pub const f26: u21 = 57389;pub const f27: u21 = 57390;pub const f28: u21 = 57391;pub const f29: u21 = 57392;pub const f30: u21 = 57393;pub const f31: u21 = 57394;pub const @"f32": u21 = 57395;pub const f33: u21 = 57396;pub const f34: u21 = 57397;pub const f35: u21 = 57398;pub const kp_0: u21 = 57399;pub const kp_1: u21 = 57400;pub const kp_2: u21 = 57401;pub const kp_3: u21 = 57402;pub const kp_4: u21 = 57403;pub const kp_5: u21 = 57404;pub const kp_6: u21 = 57405;pub const kp_7: u21 = 57406;pub const kp_8: u21 = 57407;pub const kp_9: u21 = 57408;pub const kp_decimal: u21 = 57409;pub const kp_divide: u21 = 57410;pub const kp_multiply: u21 = 57411;pub const kp_subtract: u21 = 57412;pub const kp_add: u21 = 57413;pub const kp_enter: u21 = 57414;pub const kp_equal: u21 = 57415;pub const kp_separator: u21 = 57416;pub const kp_left: u21 = 57417;pub const kp_right: u21 = 57418;pub const kp_up: u21 = 57419;pub const kp_down: u21 = 57420;pub const kp_page_up: u21 = 57421;pub const kp_page_down: u21 = 57422;pub const kp_home: u21 = 57423;pub const kp_end: u21 = 57424;pub const kp_insert: u21 = 57425;pub const kp_delete: u21 = 57426;pub const kp_begin: u21 = 57427;pub const media_play: u21 = 57428;pub const media_pause: u21 = 57429;pub const media_play_pause: u21 = 57430;pub const media_reverse: u21 = 57431;pub const media_stop: u21 = 57432;pub const media_fast_forward: u21 = 57433;pub const media_rewind: u21 = 57434;pub const media_track_next: u21 = 57435;pub const media_track_previous: u21 = 57436;pub const media_record: u21 = 57437;pub const lower_volume: u21 = 57438;pub const raise_volume: u21 = 57439;pub const mute_volume: u21 = 57440;pub const left_shift: u21 = 57441;pub const left_control: u21 = 57442;pub const left_alt: u21 = 57443;pub const left_super: u21 = 57444;pub const left_hyper: u21 = 57445;pub const left_meta: u21 = 57446;pub const right_shift: u21 = 57447;pub const right_control: u21 = 57448;pub const right_alt: u21 = 57449;pub const right_super: u21 = 57450;pub const right_hyper: u21 = 57451;pub const right_meta: u21 = 57452;pub const iso_level_3_shift: u21 = 57453;pub const iso_level_5_shift: u21 = 57454;
pub const name_map = blk: { @setEvalBranchQuota(2000); break :blk std.StaticStringMap(u21).initComptime(.{ // common names .{ "plus", '+' }, .{ "minus", '-' }, .{ "colon", ':' }, .{ "semicolon", ';' }, .{ "comma", ',' },
// special keys .{ "tab", tab }, .{ "enter", enter }, .{ "escape", escape }, .{ "space", space }, .{ "backspace", backspace }, .{ "insert", insert }, .{ "delete", delete }, .{ "left", left }, .{ "right", right }, .{ "up", up }, .{ "down", down }, .{ "page_up", page_up }, .{ "page_down", page_down }, .{ "home", home }, .{ "end", end }, .{ "caps_lock", caps_lock }, .{ "scroll_lock", scroll_lock }, .{ "num_lock", num_lock }, .{ "print_screen", print_screen }, .{ "pause", pause }, .{ "menu", menu }, .{ "f1", f1 }, .{ "f2", f2 }, .{ "f3", f3 }, .{ "f4", f4 }, .{ "f5", f5 }, .{ "f6", f6 }, .{ "f7", f7 }, .{ "f8", f8 }, .{ "f9", f9 }, .{ "f10", f10 }, .{ "f11", f11 }, .{ "f12", f12 }, .{ "f13", f13 }, .{ "f14", f14 }, .{ "f15", f15 }, .{ "f16", @"f16" }, .{ "f17", f17 }, .{ "f18", f18 }, .{ "f19", f19 }, .{ "f20", f20 }, .{ "f21", f21 }, .{ "f22", f22 }, .{ "f23", f23 }, .{ "f24", f24 }, .{ "f25", f25 }, .{ "f26", f26 }, .{ "f27", f27 }, .{ "f28", f28 }, .{ "f29", f29 }, .{ "f30", f30 }, .{ "f31", f31 }, .{ "f32", @"f32" }, .{ "f33", f33 }, .{ "f34", f34 }, .{ "f35", f35 }, .{ "kp_0", kp_0 }, .{ "kp_1", kp_1 }, .{ "kp_2", kp_2 }, .{ "kp_3", kp_3 }, .{ "kp_4", kp_4 }, .{ "kp_5", kp_5 }, .{ "kp_6", kp_6 }, .{ "kp_7", kp_7 }, .{ "kp_8", kp_8 }, .{ "kp_9", kp_9 }, .{ "kp_decimal", kp_decimal }, .{ "kp_divide", kp_divide }, .{ "kp_multiply", kp_multiply }, .{ "kp_subtract", kp_subtract }, .{ "kp_add", kp_add }, .{ "kp_enter", kp_enter }, .{ "kp_equal", kp_equal }, .{ "kp_separator", kp_separator }, .{ "kp_left", kp_left }, .{ "kp_right", kp_right }, .{ "kp_up", kp_up }, .{ "kp_down", kp_down }, .{ "kp_page_up", kp_page_up }, .{ "kp_page_down", kp_page_down }, .{ "kp_home", kp_home }, .{ "kp_end", kp_end }, .{ "kp_insert", kp_insert }, .{ "kp_delete", kp_delete }, .{ "kp_begin", kp_begin }, .{ "media_play", media_play }, .{ "media_pause", media_pause }, .{ "media_play_pause", media_play_pause }, .{ "media_reverse", media_reverse }, .{ "media_stop", media_stop }, .{ "media_fast_forward", media_fast_forward }, .{ "media_rewind", media_rewind }, .{ "media_track_next", media_track_next }, .{ "media_track_previous", media_track_previous }, .{ "media_record", media_record }, .{ "lower_volume", lower_volume }, .{ "raise_volume", raise_volume }, .{ "mute_volume", mute_volume }, .{ "left_shift", left_shift }, .{ "left_control", left_control }, .{ "left_alt", left_alt }, .{ "left_super", left_super }, .{ "left_hyper", left_hyper }, .{ "left_meta", left_meta }, .{ "right_shift", right_shift }, .{ "right_control", right_control }, .{ "right_alt", right_alt }, .{ "right_super", right_super }, .{ "right_hyper", right_hyper }, .{ "right_meta", right_meta }, .{ "iso_level_3_shift", iso_level_3_shift }, .{ "iso_level_5_shift", iso_level_5_shift }, });};
test "matches 'a'" { const key: Key = .{ .codepoint = 'a', .mods = .{ .num_lock = true }, .text = "a", }; try testing.expect(key.matches('a', .{})); try testing.expect(!key.matches('a', .{ .shift = true }));}
test "matches 'shift+a'" { const key: Key = .{ .codepoint = 'a', .shifted_codepoint = 'A', .mods = .{ .shift = true }, .text = "A", }; try testing.expect(key.matches('a', .{ .shift = true })); try testing.expect(!key.matches('a', .{})); try testing.expect(key.matches('A', .{})); try testing.expect(!key.matches('A', .{ .ctrl = true }));}
test "matches 'shift+tab'" { const key: Key = .{ .codepoint = Key.tab, .mods = .{ .shift = true, .num_lock = true }, }; try testing.expect(key.matches(Key.tab, .{ .shift = true })); try testing.expect(!key.matches(Key.tab, .{}));}
test "matches 'shift+;'" { const key: Key = .{ .codepoint = ';', .shifted_codepoint = ':', .mods = .{ .shift = true }, .text = ":", }; try testing.expect(key.matches(';', .{ .shift = true })); try testing.expect(key.matches(':', .{}));
const colon: Key = .{ .codepoint = ':', .mods = .{}, }; try testing.expect(colon.matches(':', .{}));}
test "name_map" { try testing.expectEqual(insert, name_map.get("insert"));}