design/designer-base/src/main/java/com/fr/design/ui/util/GraphicsConfig.java

package com.fr.design.ui.util;

import org.jetbrains.annotations.NotNull;

import java.awt.*;
import java.util.Map;

/**
 * 图形渲染配置
 *
 * @author vito
 * @version 10.0
 * Created by vito on 2019/9/18
 */
public class GraphicsConfig {
    private final Graphics2D myG;
    private final Map myHints;
    private final Composite myComposite;
    private final Stroke myStroke;

    public GraphicsConfig(@NotNull Graphics g) {
        myG = (Graphics2D) g;
        myHints = (Map) myG.getRenderingHints().clone();
        myComposite = myG.getComposite();
        myStroke = myG.getStroke();
    }

    public GraphicsConfig setAntialiasing(boolean on) {
        myG.setRenderingHint(RenderingHints.KEY_ANTIALIASING, on ? RenderingHints.VALUE_ANTIALIAS_ON : RenderingHints.VALUE_ANTIALIAS_OFF);
        return this;
    }

    public GraphicsConfig setAlpha(float alpha) {
        myG.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, alpha));
        return this;
    }

    public GraphicsConfig setRenderingHint(RenderingHints.Key hintKey, Object hintValue) {
        myG.setRenderingHint(hintKey, hintValue);
        return this;
    }

    public Graphics2D getG() {
        return myG;
    }

    public GraphicsConfig setComposite(Composite composite) {
        myG.setComposite(composite);
        return this;
    }

    public GraphicsConfig setStroke(Stroke stroke) {
        myG.setStroke(stroke);
        return this;
    }

    public GraphicsConfig setupAAPainting() {
        return setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON)
                .setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_NORMALIZE);
    }

    public GraphicsConfig disableAAPainting() {
        return setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF)
                .setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, RenderingHints.VALUE_STROKE_DEFAULT);
    }

    public GraphicsConfig paintWithAlpha(float alpha) {
        assert 0.0f <= alpha && alpha <= 1.0f : "alpha should be in range 0.0f .. 1.0f";
        return setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, alpha));
    }

    public void restore() {
        myG.setRenderingHints(myHints);
        myG.setComposite(myComposite);
        myG.setStroke(myStroke);
    }
}