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nih-plug/plugins/examples/gain_gui_iced/src/editor.rs
2022-04-14 23:53:14 +02:00

120 lines
3.3 KiB
Rust

use atomic_float::AtomicF32;
use nih_plug::prelude::{util, Editor, GuiContext};
use nih_plug_iced::widgets as nih_widgets;
use nih_plug_iced::*;
use std::sync::Arc;
use std::time::Duration;
use crate::GainParams;
// Makes sense to also define this here, makes it a bit easier to keep track of
pub(crate) fn default_state() -> Arc<IcedState> {
IcedState::from_size(200, 150)
}
pub(crate) fn create(
params: Arc<GainParams>,
peak_meter: Arc<AtomicF32>,
editor_state: Arc<IcedState>,
) -> Option<Box<dyn Editor>> {
create_iced_editor::<GainEditor>(editor_state, (params, peak_meter))
}
struct GainEditor {
params: Arc<GainParams>,
context: Arc<dyn GuiContext>,
peak_meter: Arc<AtomicF32>,
gain_slider_state: nih_widgets::param_slider::State,
peak_meter_state: nih_widgets::peak_meter::State,
}
#[derive(Debug, Clone, Copy)]
enum Message {
/// Update a parameter's value.
ParamUpdate(nih_widgets::ParamMessage),
}
impl IcedEditor for GainEditor {
type Executor = executor::Default;
type Message = Message;
type InitializationFlags = (Arc<GainParams>, Arc<AtomicF32>);
fn new(
(params, peak_meter): Self::InitializationFlags,
context: Arc<dyn GuiContext>,
) -> (Self, Command<Self::Message>) {
let editor = GainEditor {
params,
context,
peak_meter,
gain_slider_state: Default::default(),
peak_meter_state: Default::default(),
};
(editor, Command::none())
}
fn context(&self) -> &dyn GuiContext {
self.context.as_ref()
}
fn update(
&mut self,
_window: &mut WindowQueue,
message: Self::Message,
) -> Command<Self::Message> {
match message {
Message::ParamUpdate(message) => self.handle_param_message(message),
}
Command::none()
}
fn view(&mut self) -> Element<'_, Self::Message> {
Column::new()
.align_items(Alignment::Center)
.push(
Text::new("Gain GUI")
.font(assets::NOTO_SANS_LIGHT)
.size(40)
.height(50.into())
.width(Length::Fill)
.horizontal_alignment(alignment::Horizontal::Center)
.vertical_alignment(alignment::Vertical::Bottom),
)
.push(
Text::new("Gain")
.height(20.into())
.width(Length::Fill)
.horizontal_alignment(alignment::Horizontal::Center)
.vertical_alignment(alignment::Vertical::Center),
)
.push(
nih_widgets::ParamSlider::new(&mut self.gain_slider_state, &self.params.gain)
.map(Message::ParamUpdate),
)
.push(Space::with_height(10.into()))
.push(
nih_widgets::PeakMeter::new(
&mut self.peak_meter_state,
util::gain_to_db(self.peak_meter.load(std::sync::atomic::Ordering::Relaxed)),
)
.hold_time(Duration::from_millis(600)),
)
.into()
}
fn background_color(&self) -> nih_plug_iced::Color {
nih_plug_iced::Color {
r: 0.98,
g: 0.98,
b: 0.98,
a: 1.0,
}
}
}