ref(input): move mouse.zig and key.zig into public input.zig namespace

src/input.zig

@@ -0,0 +1,190 @@
+//! Input module for `zterm`. Contains structs to represent key events and mouse events.
+const std = @import("std");
+
+const Size = @import("size.zig").Size;
+
+pub const Mouse = packed struct {
+    col: u16,
+    row: u16,
+    button: Button,
+    kind: Kind,
+
+    pub const Button = enum(u8) {
+        left,
+        middle,
+        right,
+        none,
+        wheel_up = 64,
+        wheel_down = 65,
+        wheel_right = 66,
+        wheel_left = 67,
+        button_8 = 128,
+        button_9 = 129,
+        button_10 = 130,
+        button_11 = 131,
+    };
+
+    pub const Kind = enum(u2) {
+        press,
+        release,
+        motion,
+        drag,
+    };
+
+    pub fn eql(this: @This(), other: @This()) bool {
+        return std.meta.eql(this, other);
+    }
+
+    pub fn in(this: @This(), size: Size) bool {
+        return this.col >= size.anchor.col and this.col <= size.cols -| size.anchor.col and
+            this.row >= size.anchor.row and this.row <= size.rows -| size.anchor.row;
+    }
+};
+
+pub const Key = packed struct {
+    cp: u21,
+    mod: Modifier = .{},
+
+    pub const Modifier = packed struct {
+        shift: bool = false,
+        alt: bool = false,
+        ctrl: bool = false,
+    };
+
+    /// Compare _this_ `Key` with an _other_ `Key`.
+    ///
+    /// # Example
+    ///
+    /// Configure `ctrl+c` to quit the application (done in main event loop of the application):
+    ///
+    /// ```zig
+    /// switch (event) {
+    ///     .quit => break,
+    ///     .key => |key| {
+    ///         // ctrl+c to quit
+    ///         if (key.eql(.{ .cp = 'c', .mod = .{ .ctrl = true } }))
+    ///             app.quit.set();
+    ///     },
+    ///     else => {},
+    /// }
+    /// ```
+    pub fn eql(this: @This(), other: @This()) bool {
+        return std.meta.eql(this, other);
+    }
+};
+
+// codepoints for keys
+pub const Tab: u21 = 0x09;
+pub const Enter: u21 = 0x0D;
+pub const Escape: u21 = 0x1B;
+pub const Space: u21 = 0x20;
+pub const Backspace: u21 = 0x7F;
+
+// kitty key encodings (re-used here)
+pub 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 PageUp: u21 = 57354;
+pub const PageDown: u21 = 57355;
+pub const Home: u21 = 57356;
+pub const End: u21 = 57357;
+pub const CapsLock: u21 = 57358;
+pub const ScrollLock: u21 = 57359;
+pub const NumLock: u21 = 57360;
+pub const PrintScreen: 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 Kp0: u21 = 57399;
+pub const Kp1: u21 = 57400;
+pub const Kp2: u21 = 57401;
+pub const Kp3: u21 = 57402;
+pub const Kp4: u21 = 57403;
+pub const Kp5: u21 = 57404;
+pub const Kp6: u21 = 57405;
+pub const Kp7: u21 = 57406;
+pub const Kp8: u21 = 57407;
+pub const Kp9: u21 = 57408;
+pub const KpDecimal: u21 = 57409;
+pub const KpDivide: u21 = 57410;
+pub const KpMultiply: u21 = 57411;
+pub const KpSubtract: u21 = 57412;
+pub const KpAdd: u21 = 57413;
+pub const KpEnter: u21 = 57414;
+pub const KpEqual: u21 = 57415;
+pub const KpSeparator: u21 = 57416;
+pub const KpLeft: u21 = 57417;
+pub const KpRight: u21 = 57418;
+pub const KpUp: u21 = 57419;
+pub const KpDown: u21 = 57420;
+pub const KpPage_up: u21 = 57421;
+pub const KpPage_down: u21 = 57422;
+pub const KpHome: u21 = 57423;
+pub const KpEnd: u21 = 57424;
+pub const KpInsert: u21 = 57425;
+pub const KpDelete: u21 = 57426;
+pub const KpBegin: u21 = 57427;
+pub const MediaPlay: u21 = 57428;
+pub const MediaPause: u21 = 57429;
+pub const MediaPlayPause: u21 = 57430;
+pub const MediaReverse: u21 = 57431;
+pub const MediaStop: u21 = 57432;
+pub const MediaFastForward: u21 = 57433;
+pub const MediaRewind: u21 = 57434;
+pub const MediaTrackNext: u21 = 57435;
+pub const MediaTrackPrevious: u21 = 57436;
+pub const MediaRecord: u21 = 57437;
+pub const LowerVolume: u21 = 57438;
+pub const RaiseVolume: u21 = 57439;
+pub const MuteVolume: u21 = 57440;
+pub const LeftShift: u21 = 57441;
+pub const LeftControl: u21 = 57442;
+pub const LeftAlt: u21 = 57443;
+pub const LeftSuper: u21 = 57444;
+pub const LeftHyper: u21 = 57445;
+pub const LeftMeta: u21 = 57446;
+pub const RightShift: u21 = 57447;
+pub const RightControl: u21 = 57448;
+pub const RightAlt: u21 = 57449;
+pub const RightSuper: u21 = 57450;
+pub const RightHyper: u21 = 57451;
+pub const RightMeta: u21 = 57452;
+pub const IsoLevel3Shift: u21 = 57453;
+pub const IsoLevel5Shift: u21 = 57454;