design/designer-base/src/main/java/com/fine/theme/icon/LazyIcon.java

package com.fine.theme.icon;

import com.fr.third.errorprone.annotations.Immutable;
import org.jetbrains.annotations.NotNull;

import javax.swing.Icon;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Graphics;
import java.util.StringJoiner;

import static com.fine.theme.utils.FineUIScale.scale;

/**
 * 懒加载图标
 * 非常懒，宽高都不想算
 *
 * @author vito
 * @since 11.0
 * Created on 2023/11/6
 */
@Immutable
public class LazyIcon implements Identifiable, DisabledIcon, WhiteIcon, Icon {
    @NotNull
    private final String id;

    private final Dimension dimension;

    private final IconType type;

    public LazyIcon(@NotNull final String id) {
        this.id = id;
        this.dimension = IconManager.DEFAULT_DIMENSION;
        this.type = IconType.normal;
    }

    public LazyIcon(@NotNull final String id, int side) {
        this.id = id;
        this.dimension = new Dimension(side, side);
        this.type = IconType.normal;
    }

    public LazyIcon(@NotNull final String id, @NotNull Dimension dimension) {
        this.id = id;
        this.dimension = dimension;
        this.type = IconType.normal;
    }

    private LazyIcon(@NotNull final String id, @NotNull IconType type) {
        this.id = id;
        this.dimension = IconManager.DEFAULT_DIMENSION;
        this.type = type;
    }

    public LazyIcon(@NotNull final String id, @NotNull Dimension dimension, @NotNull IconType type) {
        this.id = id;
        this.dimension = dimension;
        this.type = type;
    }


    @NotNull
    @Override
    public String getId() {
        return id;
    }

    @Override
    public void paintIcon(@NotNull final Component c, @NotNull final Graphics g, final int x, final int y) {
        getIcon().paintIcon(c, g, x, y);
    }

    @Override
    public int getIconWidth() {
        return scale(dimension.width);
    }

    @Override
    public int getIconHeight() {
        return scale(dimension.height);
    }


    @NotNull
    public <I extends Icon> I getIcon() {
        return IconManager.getIcon(getId(), dimension, type);
    }

    /**
     * 创建一份灰化图标
     *
     * @return 灰化图标
     */
    @NotNull
    @Override
    public Icon disabled() {
        return new LazyIcon(getId(), dimension, IconType.disable);
    }

    /**
     * 创建一份白化图标
     *
     * @return 白化图标
     */
    @NotNull
    @Override
    public Icon white() {
        return new LazyIcon(getId(), dimension, IconType.white);
    }


    @Override
    public String toString() {
        return new StringJoiner(", ", LazyIcon.class.getSimpleName() + "[", "]")
                .add("id='" + id + "'")
                .add("size=" + "[w=" + scale(dimension.width) + ",h=" + scale(dimension.height) + "]")
                .add("type=" + type)
                .toString();
    }
}