oxivgl 0.1.2

Safe no_std Rust bindings for LVGL — embedded GUI on ESP32 and host SDL2
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#![cfg_attr(target_arch = "xtensa", no_std, no_main)]
#![cfg_attr(
    target_arch = "xtensa",
    feature(impl_trait_in_assoc_type, type_alias_impl_trait)
)]
// SPDX-License-Identifier: MIT OR Apache-2.0
//! Style 16 — Conical gradient (metallic knob)

use oxivgl::{
    style::{
        color_black, color_make, lv_pct, GradDsc, GradExtend, Selector, Style, StyleBuilder,
    },
    view::{NavAction, View},
    widgets::{Obj, WidgetError},
};

#[derive(Default)]
struct Style16 {
    _obj: Option<Obj<'static>>,
    _style: Option<Style>,
}

impl View for Style16 {
    fn create(&mut self, container: &Obj<'static>) -> Result<(), WidgetError> {

        let colors = [
            color_make(0xe8, 0xe8, 0xe8),
            color_make(0xff, 0xff, 0xff),
            color_make(0xfa, 0xfa, 0xfa),
            color_make(0x79, 0x79, 0x79),
            color_make(0x48, 0x48, 0x48),
            color_make(0x4b, 0x4b, 0x4b),
            color_make(0x70, 0x70, 0x70),
            color_make(0xe8, 0xe8, 0xe8),
        ];

        let mut grad = GradDsc::new();
        grad.init_stops(&colors, &[], &[]).conical(
            lv_pct(50),
            lv_pct(50),
            0,
            120,
            GradExtend::Reflect,
        );

        let mut style = StyleBuilder::new();
        style
            .radius(500)
            .bg_opa(255)
            .shadow_color(color_black())
            .shadow_width(50)
            .shadow_offset_x(20)
            .shadow_offset_y(20)
            .shadow_opa(127)
            .bg_grad(grad);
        let style = style.build();

        let obj = Obj::new(container)?;
        obj.add_style(&style, Selector::DEFAULT);
        obj.size(200, 200);
        obj.center();

                self._obj = Some(obj);
        self._style = Some(style);
        Ok(())
    }

    fn update(&mut self) -> Result<NavAction, WidgetError> {
        Ok(NavAction::None)
    }
}

oxivgl_examples_common::example_main!(Style16::default());