a modern tui library written in zig
rockorager.dev
1const std = @import("std");
2const assert = std.debug.assert;
3
4const Cell = @import("Cell.zig");
5const Shape = @import("Mouse.zig").Shape;
6const Image = @import("Image.zig");
7const Winsize = @import("main.zig").Winsize;
8const Method = @import("gwidth.zig").Method;
9
10const Screen = @This();
11
12width: u16 = 0,
13height: u16 = 0,
14
15width_pix: u16 = 0,
16height_pix: u16 = 0,
17
18buf: []Cell = &.{},
19
20cursor_row: u16 = 0,
21cursor_col: u16 = 0,
22cursor_vis: bool = false,
23
24width_method: Method = .wcwidth,
25
26mouse_shape: Shape = .default,
27cursor_shape: Cell.CursorShape = .default,
28
29pub fn init(alloc: std.mem.Allocator, winsize: Winsize) std.mem.Allocator.Error!Screen {
30 const w = winsize.cols;
31 const h = winsize.rows;
32 const self = Screen{
33 .buf = try alloc.alloc(Cell, @as(usize, @intCast(w)) * h),
34 .width = w,
35 .height = h,
36 .width_pix = winsize.x_pixel,
37 .height_pix = winsize.y_pixel,
38 };
39 const base_cell: Cell = .{};
40 @memset(self.buf, base_cell);
41 return self;
42}
43
44pub fn deinit(self: *Screen, alloc: std.mem.Allocator) void {
45 alloc.free(self.buf);
46}
47
48/// writes a cell to a location. 0 indexed
49pub fn writeCell(self: *Screen, col: u16, row: u16, cell: Cell) void {
50 if (col >= self.width or
51 row >= self.height)
52 return;
53 const i = (@as(usize, @intCast(row)) * self.width) + col;
54 assert(i < self.buf.len);
55 self.buf[i] = cell;
56}
57
58pub fn readCell(self: *const Screen, col: u16, row: u16) ?Cell {
59 if (col >= self.width or
60 row >= self.height)
61 return null;
62 const i = (@as(usize, @intCast(row)) * self.width) + col;
63 assert(i < self.buf.len);
64 return self.buf[i];
65}
66
67pub fn clear(self: *Screen) void {
68 @memset(self.buf, .{});
69}
70
71test "refAllDecls" {
72 std.testing.refAllDecls(@This());
73}