Method find_element_config_index

src/engine.rs:1175–1190

(
        &self,
        element_index: usize,
        config_type: ElementConfigType,
    )

    }

    fn find_element_config_index(
        &self,
        element_index: usize,
        config_type: ElementConfigType,
    ) -> Option<usize> {
        let element = &self.layout_elements[element_index];
        let start = element.element_configs.start;
        let length = element.element_configs.length;
        for i in 0..length {
            let config = &self.element_configs[start + i as usize];
            if config.config_type == config_type {
                return Some(config.config_index);
            }
        }
        None
    }

    fn update_aspect_ratio_box(&mut self, element_index: usize) {
        if let Some(config_idx) =