a modern tui library written in zig
rockorager.dev
1const std = @import("std");
2const assert = std.debug.assert;
3
4const Cell = @import("cell.zig").Cell;
5const Shape = @import("Mouse.zig").Shape;
6const Image = @import("Image.zig");
7const Winsize = @import("Tty.zig").Winsize;
8
9const log = std.log.scoped(.screen);
10
11const Screen = @This();
12
13width: usize = 0,
14height: usize = 0,
15
16width_pix: usize = 0,
17height_pix: usize = 0,
18
19buf: []Cell = undefined,
20
21cursor_row: usize = 0,
22cursor_col: usize = 0,
23cursor_vis: bool = false,
24
25/// true when we measure cells with unicode
26unicode: bool = false,
27
28mouse_shape: Shape = .default,
29
30pub fn init(alloc: std.mem.Allocator, winsize: Winsize) !Screen {
31 const w = winsize.cols;
32 const h = winsize.rows;
33 var self = Screen{
34 .buf = try alloc.alloc(Cell, w * h),
35 .width = w,
36 .height = h,
37 .width_pix = winsize.x_pixel,
38 .height_pix = winsize.y_pixel,
39 };
40 for (self.buf, 0..) |_, i| {
41 self.buf[i] = .{};
42 }
43 return self;
44}
45pub fn deinit(self: *Screen, alloc: std.mem.Allocator) void {
46 alloc.free(self.buf);
47}
48
49/// writes a cell to a location. 0 indexed
50pub fn writeCell(self: *Screen, col: usize, row: usize, cell: Cell) void {
51 if (self.width < col) {
52 // column out of bounds
53 return;
54 }
55 if (self.height < row) {
56 // height out of bounds
57 return;
58 }
59 const i = (row * self.width) + col;
60 assert(i < self.buf.len);
61 self.buf[i] = cell;
62}