104 lines
3.4 KiB
Zig
104 lines
3.4 KiB
Zig
const std = @import("std");
|
|
const vaxis = @import("vaxis");
|
|
const Cell = vaxis.Cell;
|
|
const TextInput = vaxis.widgets.TextInput;
|
|
const border = vaxis.widgets.border;
|
|
|
|
const log = std.log.scoped(.main);
|
|
pub fn main() !void {
|
|
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
|
|
defer {
|
|
const deinit_status = gpa.deinit();
|
|
//fail test; can't try in defer as defer is executed after we return
|
|
if (deinit_status == .leak) {
|
|
log.err("memory leak", .{});
|
|
}
|
|
}
|
|
const alloc = gpa.allocator();
|
|
|
|
// Initialize Vaxis
|
|
var vx = try vaxis.init(Event, .{});
|
|
defer vx.deinit(alloc);
|
|
|
|
// Start the read loop. This puts the terminal in raw mode and begins
|
|
// reading user input
|
|
try vx.start();
|
|
defer vx.stop();
|
|
|
|
// Optionally enter the alternate screen
|
|
try vx.enterAltScreen();
|
|
|
|
// We'll adjust the color index every keypress for the border
|
|
var color_idx: u8 = 0;
|
|
|
|
var text_input = TextInput.init(alloc);
|
|
defer text_input.deinit();
|
|
|
|
try vx.queryTerminal();
|
|
|
|
// The main event loop. Vaxis provides a thread safe, blocking, buffered
|
|
// queue which can serve as the primary event queue for an application
|
|
outer: while (true) {
|
|
// nextEvent blocks until an event is in the queue
|
|
const event = vx.nextEvent();
|
|
log.debug("event: {}\r\n", .{event});
|
|
// exhaustive switching ftw. Vaxis will send events if your EventType
|
|
// enum has the fields for those events (ie "key_press", "winsize")
|
|
switch (event) {
|
|
.key_press => |key| {
|
|
color_idx = switch (color_idx) {
|
|
255 => 0,
|
|
else => color_idx + 1,
|
|
};
|
|
try text_input.update(.{ .key_press = key });
|
|
if (key.matches('c', .{ .ctrl = true })) {
|
|
break :outer;
|
|
}
|
|
if (key.matches('l', .{ .ctrl = true })) {
|
|
vx.queueRefresh();
|
|
}
|
|
},
|
|
.winsize => |ws| {
|
|
try vx.resize(alloc, ws);
|
|
},
|
|
.cap_rgb => continue,
|
|
.cap_kitty_keyboard => try vx.enableKittyKeyboard(.{}),
|
|
else => {},
|
|
}
|
|
|
|
// vx.window() returns the root window. This window is the size of the
|
|
// terminal and can spawn child windows as logical areas. Child windows
|
|
// cannot draw outside of their bounds
|
|
const win = vx.window();
|
|
// Clear the entire space because we are drawing in immediate mode.
|
|
// vaxis double buffers the screen. This new frame will be compared to
|
|
// the old and only updated cells will be drawn
|
|
win.clear();
|
|
const child = win.initChild(
|
|
win.width / 2 - 20,
|
|
win.height / 2 - 3,
|
|
.{ .limit = 40 },
|
|
.{ .limit = 3 },
|
|
);
|
|
// draw the text_input using a bordered window
|
|
const style: vaxis.Style = .{
|
|
.fg = .{ .index = color_idx },
|
|
};
|
|
text_input.draw(border.all(child, style));
|
|
|
|
// Render the screen
|
|
try vx.render();
|
|
}
|
|
}
|
|
|
|
// Our EventType. This can contain internal events as well as Vaxis events.
|
|
// Internal events can be posted into the same queue as vaxis events to allow
|
|
// for a single event loop with exhaustive switching. Booya
|
|
const Event = union(enum) {
|
|
key_press: vaxis.Key,
|
|
winsize: vaxis.Winsize,
|
|
focus_in,
|
|
cap_rgb,
|
|
cap_kitty_keyboard,
|
|
foo: u8,
|
|
};
|