Initial public release

src/tui/status/linenumstate.zig

@@ -0,0 +1,71 @@
+const std = @import("std");
+const Allocator = std.mem.Allocator;
+const nc = @import("notcurses");
+const tp = @import("thespian");
+const tracy = @import("tracy");
+
+const Widget = @import("../Widget.zig");
+const tui = @import("../tui.zig");
+
+parent: nc.Plane,
+plane: nc.Plane,
+line: usize = 0,
+lines: usize = 0,
+column: usize = 0,
+buf: [256]u8 = undefined,
+rendered: [:0]const u8 = "",
+
+const Self = @This();
+
+pub fn create(a: Allocator, parent: nc.Plane) !Widget {
+    const self: *Self = try a.create(Self);
+    self.* = try init(parent);
+    return Widget.to(self);
+}
+
+fn init(parent: nc.Plane) !Self {
+    var n = try nc.Plane.init(&(Widget.Box{}).opts(@typeName(Self)), parent);
+    errdefer n.deinit();
+
+    return .{
+        .parent = parent,
+        .plane = n,
+    };
+}
+
+pub fn deinit(self: *Self, a: Allocator) void {
+    self.plane.deinit();
+    a.destroy(self);
+}
+
+pub fn layout(self: *Self) Widget.Layout {
+    return .{ .static = self.rendered.len };
+}
+
+pub fn render(self: *Self, theme: *const Widget.Theme) bool {
+    tui.set_base_style(&self.plane, " ", theme.statusbar);
+    self.plane.erase();
+    self.plane.home();
+    _ = self.plane.putstr(self.rendered) catch {};
+    return false;
+}
+
+fn format(self: *Self) void {
+    var fbs = std.io.fixedBufferStream(&self.buf);
+    const writer = fbs.writer();
+    std.fmt.format(writer, " Ln {d}, Col {d} ", .{ self.line + 1, self.column + 1 }) catch {};
+    self.rendered = @ptrCast(fbs.getWritten());
+    self.buf[self.rendered.len] = 0;
+}
+
+pub fn receive(self: *Self, _: tp.pid_ref, m: tp.message) error{Exit}!bool {
+    if (try m.match(.{ "E", "pos", tp.extract(&self.lines), tp.extract(&self.line), tp.extract(&self.column) })) {
+        self.format();
+    } else if (try m.match(.{ "E", "close" })) {
+        self.lines = 0;
+        self.line = 0;
+        self.column = 0;
+        self.rendered = "";
+    }
+    return false;
+}