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use crate::debug_state::DebugState;
use crate::widget::prelude::*;
use crate::{theme, LinearGradient, Point, Rect, UnitPoint};
use tracing::instrument;
#[derive(Debug, Clone, Default)]
pub struct ProgressBar;
impl ProgressBar {
pub fn new() -> ProgressBar {
Self::default()
}
}
impl Widget<f64> for ProgressBar {
#[instrument(
name = "ProgressBar",
level = "trace",
skip(self, _ctx, _event, _data, _env)
)]
fn event(&mut self, _ctx: &mut EventCtx, _event: &Event, _data: &mut f64, _env: &Env) {}
#[instrument(
name = "ProgressBar",
level = "trace",
skip(self, _ctx, _event, _data, _env)
)]
fn lifecycle(&mut self, _ctx: &mut LifeCycleCtx, _event: &LifeCycle, _data: &f64, _env: &Env) {}
#[instrument(
name = "ProgressBar",
level = "trace",
skip(self, ctx, _old_data, _data, _env)
)]
fn update(&mut self, ctx: &mut UpdateCtx, _old_data: &f64, _data: &f64, _env: &Env) {
ctx.request_paint();
}
#[instrument(
name = "ProgressBar",
level = "trace",
skip(self, _layout_ctx, bc, _data, env)
)]
fn layout(
&mut self,
_layout_ctx: &mut LayoutCtx,
bc: &BoxConstraints,
_data: &f64,
env: &Env,
) -> Size {
bc.debug_check("ProgressBar");
bc.constrain(Size::new(
env.get(theme::WIDE_WIDGET_WIDTH),
env.get(theme::BASIC_WIDGET_HEIGHT),
))
}
#[instrument(name = "ProgressBar", level = "trace", skip(self, ctx, data, env))]
fn paint(&mut self, ctx: &mut PaintCtx, data: &f64, env: &Env) {
let height = env.get(theme::BASIC_WIDGET_HEIGHT);
let corner_radius = env.get(theme::PROGRESS_BAR_RADIUS);
let clamped = data.clamp(0.0, 1.0);
let stroke_width = 2.0;
let inset = -stroke_width / 2.0;
let size = ctx.size();
let rounded_rect = Size::new(size.width, height)
.to_rect()
.inset(inset)
.to_rounded_rect(corner_radius);
ctx.stroke(rounded_rect, &env.get(theme::BORDER_DARK), stroke_width);
let background_gradient = LinearGradient::new(
UnitPoint::TOP,
UnitPoint::BOTTOM,
(
env.get(theme::BACKGROUND_LIGHT),
env.get(theme::BACKGROUND_DARK),
),
);
ctx.fill(rounded_rect, &background_gradient);
let calculated_bar_width = clamped * rounded_rect.width();
let rounded_rect = Rect::from_origin_size(
Point::new(-inset, 0.),
Size::new(calculated_bar_width, height),
)
.inset((0.0, inset))
.to_rounded_rect(corner_radius);
let bar_gradient = LinearGradient::new(
UnitPoint::TOP,
UnitPoint::BOTTOM,
(env.get(theme::PRIMARY_LIGHT), env.get(theme::PRIMARY_DARK)),
);
ctx.fill(rounded_rect, &bar_gradient);
}
fn debug_state(&self, data: &f64) -> DebugState {
DebugState {
display_name: self.short_type_name().to_string(),
main_value: data.to_string(),
..Default::default()
}
}
}