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|
pub mod function_cache;
pub mod math;
pub mod ui;
use function_cache::FunctionCache;
use iced::executor;
use iced::widget::column;
use iced::widget::text_input;
use iced::widget::{canvas, container};
use iced::{Application, Command, Element, Length, Settings, Theme};
use math::expression_function::ExpressionFunction;
use std::sync::Mutex;
use ui::graph::GraphCanvas;
use ui::Message;
pub fn main() -> iced::Result {
Graph::run(Settings {
antialiasing: true,
..Settings::default()
})
}
#[derive(Default)]
struct Graph {
input_state: String,
graph_canvas: GraphCanvas,
}
impl Application for Graph {
type Executor = executor::Default;
type Message = Message;
type Theme = Theme;
type Flags = ();
fn new(_flags: ()) -> (Self, Command<Message>) {
let default_func = "f(x) = x^2".to_string();
(
Graph {
graph_canvas: GraphCanvas::new(&default_func),
input_state: default_func,
..Default::default()
},
Command::none(),
)
}
fn title(&self) -> String {
String::from("MathEval")
}
fn update(&mut self, message: Message) -> Command<Message> {
match message {
Message::InputChanged(s) => {
self.input_state = s;
}
Message::UpdateFunction => {
let func = ExpressionFunction::from_string(
self.input_state.clone(),
self.graph_canvas.ctx.operations(),
);
self.graph_canvas.func = Mutex::new(FunctionCache::new(func));
self.graph_canvas.clear();
}
Message::UpdateScreen => {
self.graph_canvas.clear();
}
}
Command::none()
}
fn view(&self) -> Element<Message> {
let input = text_input("x", &self.input_state)
.on_input(Message::InputChanged)
.on_submit(Message::UpdateFunction)
.padding(15)
.size(30);
let canvas = canvas(&self.graph_canvas)
.width(Length::Fill)
.height(Length::Fill);
let container = container(canvas)
.width(Length::Fill)
.height(Length::Fill)
.padding(20);
column![input, container].into()
}
}
|
