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|
//! Contains all types and implementations related to the plugin's GUI
use crate::{
RetainPluginMainThread, RetainPluginShared,
params::{RetainParamsLocal, RetainParamsShared},
window_size::WindowSize,
};
use baseview::{Size, WindowHandle, WindowOpenOptions, WindowScalePolicy, gl::GlConfig};
use clack_extensions::gui::*;
use clack_plugin::prelude::*;
use egui_baseview::{
EguiWindow, GraphicsConfig, Queue,
egui::{self, ComboBox, Context, Slider},
};
use std::sync::Arc;
/// The EGUI application state
struct AppState {
/// A handle to the shared params state
shared_params: Arc<RetainParamsShared>,
/// The local state of the parameters
local_params: RetainParamsLocal,
}
impl AppState {
/// Initializes a new [`AppState`] from the given shared params state handle
pub fn new(shared_params: &Arc<RetainParamsShared>) -> Self {
Self {
local_params: RetainParamsLocal::new(shared_params),
shared_params: Arc::clone(shared_params),
}
}
}
/// GUI state that can be accessed directly by the main thread
pub struct RetainPluginGui {
/// The handle to the baseview plugin window.
handle: WindowHandle,
/// The handle to the EGUI context
egui_context: Context,
}
impl RetainPluginGui {
/// Creates a new GUI window, and embeds it into the given `parent`.
pub fn new(parent: Window<'_>, plugin_state: &RetainPluginShared) -> Self {
let settings = WindowOpenOptions {
title: "Retain".to_string(),
size: Size::new(1000.0, 500.0),
scale: WindowScalePolicy::SystemScaleFactor,
gl_config: Some(GlConfig::default()),
};
let (tx, rx) = std::sync::mpsc::channel();
let handle = EguiWindow::open_parented(
&parent,
settings,
GraphicsConfig::default(),
AppState::new(&plugin_state.params),
move |egui_ctx: &Context, _queue: &mut Queue, _state: &mut AppState| {
tx.send(egui_ctx.clone()).unwrap();
},
|egui_ctx: &Context, _queue: &mut Queue, state: &mut AppState| {
state.local_params.fetch_updates(&state.shared_params);
egui::CentralPanel::default().show(egui_ctx, |ui| {
ui.heading("Retain");
let mut order = state.local_params.get_order();
let slider = ui.add(
Slider::new(&mut order, 0..=100_000)
.text("Order")
.logarithmic(true),
);
if slider.changed() {
state.local_params.set_order(order);
state.local_params.push_updates(&state.shared_params);
}
state.local_params.has_gesture = slider.is_pointer_button_down_on();
state.local_params.push_gesture(&state.shared_params);
let mut window_size = WindowSize::from(state.local_params.get_window_size());
ComboBox::from_label("Window Size")
.selected_text(window_size.as_str())
.show_ui(ui, |ui| {
for size in WindowSize::into_iter() {
let display = size.as_str();
if ui
.selectable_value(&mut window_size, size, display)
.changed()
{
let u = window_size.value();
state.local_params.set_window_size(u);
state.local_params.push_updates(&state.shared_params);
}
}
});
});
},
);
let egui_context = rx.recv().unwrap();
Self {
handle,
egui_context,
}
}
/// Requests the UI to repaint itself, e.g. in response to events or parameter changes
pub fn request_repaint(&self) {
self.egui_context.request_repaint();
}
}
impl Drop for RetainPluginGui {
fn drop(&mut self) {
self.handle.close();
}
}
impl PluginGuiImpl for RetainPluginMainThread<'_> {
fn is_api_supported(&mut self, configuration: GuiConfiguration) -> bool {
configuration.api_type
== GuiApiType::default_for_current_platform().expect("Unsupported platform")
&& !configuration.is_floating
}
fn get_preferred_api(&mut self) -> Option<GuiConfiguration<'_>> {
Some(GuiConfiguration {
api_type: GuiApiType::default_for_current_platform().expect("Unsupported platform"),
is_floating: false,
})
}
fn create(&mut self, configuration: GuiConfiguration) -> Result<(), PluginError> {
if configuration.is_floating {
return Err(PluginError::Message(
"Invalid GUI configuration: this plugin does not support floating mode",
));
}
let supported_type =
GuiApiType::default_for_current_platform().expect("Unsupported platform");
if configuration.api_type != supported_type {
return Err(PluginError::Message(
"Invalid GUI configuration: unsupported API type",
));
}
Ok(())
}
fn destroy(&mut self) {
let _ = self.gui.take();
}
fn set_scale(&mut self, _scale: f64) -> Result<(), PluginError> {
Ok(())
}
fn get_size(&mut self) -> Option<GuiSize> {
Some(GuiSize {
width: 1000,
height: 500,
})
}
fn set_size(&mut self, _size: GuiSize) -> Result<(), PluginError> {
Ok(())
}
fn set_parent(&mut self, window: Window) -> Result<(), PluginError> {
self.gui = Some(RetainPluginGui::new(window, self.shared));
Ok(())
}
fn set_transient(&mut self, _window: Window) -> Result<(), PluginError> {
Ok(())
}
fn show(&mut self) -> Result<(), PluginError> {
if let Some(gui) = &self.gui {
gui.request_repaint();
}
Ok(())
}
fn hide(&mut self) -> Result<(), PluginError> {
if let Some(gui) = &self.gui {
gui.request_repaint();
}
Ok(())
}
}
|
