this repo has no description
readme: add gif
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README.md
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README.md
···
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It begins with them, but ends with me. Their son, Vaxis
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```
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libvaxis is a zig port of the go TUI library
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[Vaxis](https://git.sr.ht/~rockorager/vaxis). The goal is to have the same
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feature set, only written in zig.
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Like it's sibling library, libvaxis _does not use terminfo_. Support for vt
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features is detected through terminal queries.
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Libvaxis _does not use terminfo_. Support for vt features is detected through
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terminal queries.
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Contributions are welcome.
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examples/vaxis.zig
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examples/vaxis.zig
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winsize: vaxis.Winsize,
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};
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pub const panic = vaxis.panic_handler;
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pub fn main() !void {
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var gpa = std.heap.GeneralPurposeAllocator(.{}){};
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defer {
···
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try vx.enterAltScreen(tty.anyWriter());
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try vx.queryTerminal(tty.anyWriter(), 1 * std.time.ns_per_s);
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const lower_limit = 30;
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var color_idx: u8 = lower_limit;
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try vx.queryColor(tty.anyWriter(), .fg);
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try vx.queryColor(tty.anyWriter(), .bg);
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var pct: u8 = 0;
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var dir: enum {
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up,
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down,
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} = .up;
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const fg = [_]u8{ 192, 202, 245 };
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const bg = [_]u8{ 26, 27, 38 };
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// block until we get a resize
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while (true) {
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const win = vx.window();
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win.clear();
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const style: vaxis.Style = .{ .fg = .{ .rgb = [_]u8{ color_idx, color_idx, color_idx } } };
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const color = try blendColors(bg, fg, pct);
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const style: vaxis.Style = .{ .fg = color };
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const segment: vaxis.Segment = .{
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.text = vaxis.logo,
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const center = vaxis.widgets.alignment.center(win, 28, 4);
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_ = try center.printSegment(segment, .{ .wrap = .grapheme });
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try vx.render(tty.anyWriter());
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std.time.sleep(8 * std.time.ns_per_ms);
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std.time.sleep(16 * std.time.ns_per_ms);
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switch (dir) {
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.up => {
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color_idx += 1;
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if (color_idx == 255) dir = .down;
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pct += 1;
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if (pct == 100) dir = .down;
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},
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.down => {
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color_idx -= 1;
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if (color_idx == lower_limit) dir = .up;
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pct -= 1;
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if (pct == 0) dir = .up;
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},
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}
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}
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}
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/// blend two rgb colors. pct is an integer percentage for te portion of 'b' in
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/// 'a'
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fn blendColors(a: [3]u8, b: [3]u8, pct: u8) !vaxis.Color {
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// const r_a = (a[0] * (100 -| pct)) / 100;
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const r_a = (@as(u16, a[0]) * @as(u16, (100 -| pct))) / 100;
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const r_b = (@as(u16, b[0]) * @as(u16, pct)) / 100;
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const g_a = (@as(u16, a[1]) * @as(u16, (100 -| pct))) / 100;
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const g_b = (@as(u16, b[1]) * @as(u16, pct)) / 100;
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// const g_a = try std.math.mul(u8, a[1], (100 -| pct) / 100);
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// const g_b = (b[1] * pct) / 100;
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const b_a = (@as(u16, a[2]) * @as(u16, (100 -| pct))) / 100;
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const b_b = (@as(u16, b[2]) * @as(u16, pct)) / 100;
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// const b_a = try std.math.mul(u8, a[2], (100 -| pct) / 100);
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// const b_b = (b[2] * pct) / 100;
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return .{ .rgb = [_]u8{
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@min(r_a + r_b, 255),
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@min(g_a + g_b, 255),
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@min(b_a + b_b, 255),
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} };
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}
vaxis.gif
vaxis.gif
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