egui-graph-edit 0.7.1

A helper library to create interactive node graphs using egui
Documentation 
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use egui::epaint::Shadow;
use egui::CornerRadius;
use egui::{style::WidgetVisuals, Margin, Stroke, Style, Vec2};

// Copied from https://github.com/gzp-crey/shine

pub trait Scale {
    fn scale(&mut self, amount: f32);

    fn scaled(&self, amount: f32) -> Self
    where
        Self: Clone,
    {
        let mut scaled = self.clone();
        scaled.scale(amount);
        scaled
    }
}

impl Scale for Vec2 {
    fn scale(&mut self, amount: f32) {
        self.x *= amount;
        self.y *= amount;
    }
}

impl Scale for Margin {
    fn scale(&mut self, amount: f32) {
        self.left *= amount as i8;
        self.right *= amount as i8;
        self.top *= amount as i8;
        self.bottom *= amount as i8;
    }
}

impl Scale for CornerRadius {
    fn scale(&mut self, amount: f32) {
        self.ne *= amount as u8;
        self.nw *= amount as u8;
        self.se *= amount as u8;
        self.sw *= amount as u8;
    }
}

impl Scale for Stroke {
    fn scale(&mut self, amount: f32) {
        self.width *= amount;
    }
}

impl Scale for Shadow {
    fn scale(&mut self, amount: f32) {
        self.spread *= amount.clamp(0.4, 1.) as u8;
    }
}

impl Scale for WidgetVisuals {
    fn scale(&mut self, amount: f32) {
        self.bg_stroke.scale(amount);
        self.fg_stroke.scale(amount);
        self.corner_radius.scale(amount);
        self.expansion *= amount.clamp(0.4, 1.);
    }
}

impl Scale for Style {
    fn scale(&mut self, amount: f32) {
        if let Some(ov_font_id) = &mut self.override_font_id {
            ov_font_id.size *= amount;
        }

        for text_style in self.text_styles.values_mut() {
            text_style.size *= amount;
        }

        self.spacing.item_spacing.scale(amount);
        self.spacing.window_margin.scale(amount);
        self.spacing.button_padding.scale(amount);
        self.spacing.indent *= amount;
        self.spacing.interact_size.scale(amount);
        self.spacing.slider_width *= amount;
        self.spacing.text_edit_width *= amount;
        self.spacing.icon_width *= amount;
        self.spacing.icon_width_inner *= amount;
        self.spacing.icon_spacing *= amount;
        self.spacing.tooltip_width *= amount;
        self.spacing.combo_height *= amount;
        self.spacing.scroll.bar_width *= amount;
        self.spacing.scroll.floating_allocated_width *= amount;
        self.spacing.scroll.floating_width *= amount;

        self.interaction.resize_grab_radius_side *= amount;
        self.interaction.resize_grab_radius_corner *= amount;

        self.visuals.widgets.noninteractive.scale(amount);
        self.visuals.widgets.inactive.scale(amount);
        self.visuals.widgets.hovered.scale(amount);
        self.visuals.widgets.active.scale(amount);
        self.visuals.widgets.open.scale(amount);

        self.visuals.selection.stroke.scale(amount);

        self.visuals.resize_corner_size *= amount;
        //self.visuals.text_cursor.width *= amount;
        self.visuals.clip_rect_margin *= amount;
        //self.visuals.window_rounding.scale(amount);
        self.visuals.window_shadow.scale(amount);
        self.visuals.popup_shadow.scale(amount);

        // TODO: fix rect alignment
        #[cfg(debug_assertions)]
        if amount != 1.0 {
            self.debug.show_unaligned = false;
        }
    }
}