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import term.ui as tui
const (
colors = [
tui.Color{33, 150, 243},
tui.Color{0, 150, 136},
tui.Color{205, 220, 57},
tui.Color{255, 152, 0},
tui.Color{244, 67, 54},
tui.Color{156, 39, 176},
]
)
struct Point {
x int
y int
}
struct App {
mut:
tui &tui.Context = 0
points []Point
color tui.Color = colors[0]
color_idx int
cut_rate f64 = 5
}
fn frame(x voidptr) {
mut app := &App(x)
app.tui.clear()
if app.points.len > 0 {
app.tui.set_bg_color(app.color)
mut last := app.points[0]
for point in app.points {
// if the cursor moves quickly enough, different events are not
// necessarily touching, so we need to draw a line between them
app.tui.draw_line(last.x, last.y, point.x, point.y)
last = point
}
app.tui.reset()
l := int(app.points.len / app.cut_rate) + 1
app.points = app.points[l..].clone()
}
ww := app.tui.window_width
app.tui.bold()
app.tui.draw_text(ww / 6, 2, 'V term.input: cursor chaser demo')
app.tui.draw_text((ww - ww / 6) - 14, 2, 'cut rate: ${(100 / app.cut_rate):3.0f}%')
app.tui.horizontal_separator(3)
app.tui.reset()
app.tui.flush()
}
fn event(e &tui.Event, x voidptr) {
mut app := &App(x)
match e.typ {
.key_down {
match e.code {
.escape {
exit(0)
}
.space, .enter {
app.color_idx++
if app.color_idx == colors.len {
app.color_idx = 0
}
app.color = colors[app.color_idx]
}
else {}
}
}
.mouse_move, .mouse_drag, .mouse_down {
app.points << Point{e.x, e.y}
}
.mouse_scroll {
d := if e.direction == .up { 0.1 } else { -0.1 }
app.cut_rate += d
if app.cut_rate < 1 {
app.cut_rate = 1
}
}
else {}
}
}
fn main() {
mut app := &App{}
app.tui = tui.init(
user_data: app
frame_fn: frame
event_fn: event
hide_cursor: true
)
app.tui.run() ?
}
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