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use eframe::egui;
use egui_fancy_knob::{Knob, KnobStyle, LabelPosition, add_knob};
fn main() -> eframe::Result<()> {
eframe::run_native(
"Knob Example",
eframe::NativeOptions::default(),
Box::new(|_cc| Ok(Box::new(KnobExample::default()))),
)
}
struct KnobExample {
basic_value: f32,
purple_value: f32,
large_value: f32,
thick_value: f32,
red_value: f32,
green_value: f32,
blue_value: f32,
log_value: f32,
neg_log_value: f32,
}
impl Default for KnobExample {
fn default() -> Self {
Self {
basic_value: 0.0,
purple_value: 0.0,
large_value: 0.0,
thick_value: 0.0,
red_value: 0.0,
green_value: 0.0,
blue_value: 0.0,
log_value: 0.0,
neg_log_value: 0.0,
}
}
}
impl eframe::App for KnobExample {
fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
egui::CentralPanel::default().show(ctx, |ui| {
ui.horizontal(|ui| {
add_knob(
ui,
Knob::new(
self.basic_value,
|value| self.basic_value = value,
0.0..=100.0,
KnobStyle::Dot,
)
.with_label("Basic", LabelPosition::Right)
.with_size(40.0)
.with_font_size(10.0)
.with_colors(
egui::Color32::from_rgb(60, 60, 60),
egui::Color32::from_rgb(150, 150, 150),
egui::Color32::from_rgb(150, 150, 150),
egui::Color32::from_rgb(200, 200, 200),
)
.with_neutral(50.0),
|| {
println!("Released basic knob");
},
);
ui.add(
Knob::new(21.6, |_| {}, 0.0..=100.0, KnobStyle::Wiper)
.with_label("Disabled", LabelPosition::Bottom)
.with_colors(
egui::Color32::DARK_GRAY,
egui::Color32::GRAY,
egui::Color32::GRAY,
egui::Color32::GRAY,
)
.with_size(50.0)
.with_font_size(14.0)
.with_stroke_width(3.0)
.enabled(false),
);
ui.add(
Knob::new(
self.purple_value,
|value| self.purple_value = value,
0.0..=100.0,
KnobStyle::Wiper,
)
.with_label("Purple", LabelPosition::Bottom)
.with_colors(
egui::Color32::from_rgb(60, 30, 80),
egui::Color32::from_rgb(200, 100, 255),
egui::Color32::from_rgb(200, 100, 255),
egui::Color32::from_rgb(230, 150, 255),
)
.with_size(50.0)
.with_font_size(14.0)
.with_stroke_width(3.0)
.with_step(0.1)
.with_neutral(50.0),
);
ui.add(
Knob::new(
self.large_value,
|value| self.large_value = value,
0.0..=100.0,
KnobStyle::Dot,
)
.with_label("Large", LabelPosition::Bottom)
.with_size(60.0)
.with_font_size(16.0),
);
ui.add(
Knob::new(
self.thick_value,
|value| self.thick_value = value,
0.0..=100.0,
KnobStyle::Wiper,
)
.with_label("Thick", LabelPosition::Bottom)
.with_size(50.0)
.with_stroke_width(4.0)
.with_neutral(50.0),
);
ui.add(
Knob::new(
self.red_value,
|value| self.red_value = value,
0.0..=100.0,
KnobStyle::Dot,
)
.with_label("Red", LabelPosition::Bottom)
.with_colors(
egui::Color32::from_rgb(80, 30, 30),
egui::Color32::from_rgb(220, 50, 50),
egui::Color32::from_rgb(220, 50, 50),
egui::Color32::from_rgb(255, 100, 100),
)
.with_size(50.0)
.with_neutral(50.0),
);
ui.add(
Knob::new(
self.green_value,
|value| self.green_value = value,
0.0..=100.0,
KnobStyle::Wiper,
)
.with_label("Leftandlongtext", LabelPosition::Left)
.with_colors(
egui::Color32::from_rgb(30, 80, 30),
egui::Color32::from_rgb(50, 220, 50),
egui::Color32::from_rgb(50, 220, 50),
egui::Color32::from_rgb(100, 255, 100),
)
.with_size(50.0)
.with_label_format(|v| format!("{:.2}%", v))
.with_neutral(50.0),
);
ui.add(
Knob::new(
self.blue_value,
|value| self.blue_value = value,
0.0..=100.0,
KnobStyle::Dot,
)
.with_label("Top", LabelPosition::Top)
.with_colors(
egui::Color32::from_rgb(30, 30, 80),
egui::Color32::from_rgb(50, 50, 220),
egui::Color32::from_rgb(50, 50, 220),
egui::Color32::from_rgb(100, 100, 255),
)
.with_size(50.0)
.with_neutral(50.0),
);
ui.add(
Knob::new(
self.log_value,
|value| self.log_value = value,
0.0..=f32::INFINITY,
KnobStyle::Dot,
)
.with_label("Log", LabelPosition::Bottom)
.with_size(40.0)
.with_font_size(10.0)
.logarithmic(true)
.largest_finite(1e3)
.smallest_finite(1e-3)
.with_neutral(1.5),
);
ui.add(
Knob::new(
self.neg_log_value,
|value| self.neg_log_value = value,
f32::NEG_INFINITY..=10.0,
KnobStyle::Dot,
)
.with_label("Neg Log", LabelPosition::Bottom)
.with_size(40.0)
.with_font_size(10.0)
.logarithmic(true)
.largest_finite(1e2)
.smallest_finite(1e-2)
.with_neutral(1.5),
);
});
});
}
}