umya-spreadsheet 2.3.3

umya-spreadsheet is a library written in pure Rust to read and write xlsx file.
Documentation 
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// a:gs
use super::RgbColorModelHex;
use super::SchemeColor;
use crate::reader::driver::*;
use crate::writer::driver::*;
use quick_xml::events::{BytesStart, Event};
use quick_xml::Reader;
use quick_xml::Writer;
use std::io::Cursor;

#[derive(Clone, Default, Debug)]
pub struct GradientStop {
    position: i32,
    scheme_color: Option<Box<SchemeColor>>,
    rgb_color_model_hex: Option<Box<RgbColorModelHex>>,
}

impl GradientStop {
    #[inline]
    pub fn get_position(&self) -> &i32 {
        &self.position
    }

    #[inline]
    pub fn set_position(&mut self, value: i32) -> &mut GradientStop {
        self.position = value;
        self
    }

    #[inline]
    pub fn get_scheme_color(&self) -> Option<&SchemeColor> {
        self.scheme_color.as_deref()
    }

    #[inline]
    pub fn get_scheme_color_mut(&mut self) -> Option<&mut SchemeColor> {
        self.scheme_color.as_deref_mut()
    }

    #[inline]
    pub fn set_scheme_color(&mut self, value: SchemeColor) -> &mut GradientStop {
        self.scheme_color = Some(Box::new(value));
        self
    }

    #[inline]
    pub fn get_rgb_color_model_hex(&self) -> Option<&RgbColorModelHex> {
        self.rgb_color_model_hex.as_deref()
    }

    #[inline]
    pub fn get_rgb_color_model_hex_mut(&mut self) -> Option<&mut RgbColorModelHex> {
        self.rgb_color_model_hex.as_deref_mut()
    }

    #[inline]
    pub fn set_rgb_color_model_hex(&mut self, value: RgbColorModelHex) -> &mut GradientStop {
        self.rgb_color_model_hex = Some(Box::new(value));
        self
    }

    pub(crate) fn set_attributes<R: std::io::BufRead>(
        &mut self,
        reader: &mut Reader<R>,
        e: &BytesStart,
    ) {
        if let Some(v) = get_attribute(e, b"pos") {
            self.set_position(v.parse::<i32>().unwrap());
        }

        xml_read_loop!(
            reader,
            Event::Start(ref e) => {
                match e.name().into_inner() {
                    b"a:schemeClr" => {
                        let mut obj = SchemeColor::default();
                        obj.set_attributes(reader, e, false);
                        self.set_scheme_color(obj);
                    }
                    b"a:srgbClr" => {
                        let mut obj = RgbColorModelHex::default();
                        obj.set_attributes(reader, e, false);
                        self.set_rgb_color_model_hex(obj);
                    }
                    _ => (),
                }
            },
            Event::Empty(ref e) => {
                match e.name().into_inner() {
                    b"a:schemeClr" => {
                        let mut obj = SchemeColor::default();
                        obj.set_attributes(reader, e, true);
                        self.set_scheme_color(obj);
                    }
                    b"a:srgbClr" => {
                        let mut obj = RgbColorModelHex::default();
                        obj.set_attributes(reader, e, true);
                        self.set_rgb_color_model_hex(obj);
                    }
                    _ => (),
                }
            },
            Event::End(ref e) => {
                if e.name().into_inner() == b"a:gs" {
                    return
                }
            },
            Event::Eof => panic!("Error: Could not find {} end element", "a:gs")
        );
    }

    pub(crate) fn write_to(&self, writer: &mut Writer<Cursor<Vec<u8>>>) {
        // a:gs
        write_start_tag(
            writer,
            "a:gs",
            vec![("pos", &self.position.to_string())],
            false,
        );

        // a:schemeClr
        for v in &self.scheme_color {
            v.write_to(writer);
        }

        // a:srgbClr
        for v in &self.rgb_color_model_hex {
            v.write_to(writer);
        }

        write_end_tag(writer, "a:gs");
    }
}