JDK14/Java14源码在线阅读

/*
 *
 * Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Oracle nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package java2d.demos.Fonts;


import static java.awt.Font.BOLD;
import static java.awt.Font.ITALIC;
import static java.awt.Font.PLAIN;
import static java.awt.font.TextAttribute.BACKGROUND;
import static java.awt.font.TextAttribute.CHAR_REPLACEMENT;
import static java.awt.font.TextAttribute.FONT;
import static java.awt.font.TextAttribute.FOREGROUND;
import static java.awt.font.TextAttribute.UNDERLINE;
import static java.awt.font.TextAttribute.UNDERLINE_ON;
import java.awt.Color;
import java.awt.Font;
import java.awt.GradientPaint;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.TexturePaint;
import java.awt.font.FontRenderContext;
import java.awt.font.GraphicAttribute;
import java.awt.font.ImageGraphicAttribute;
import java.awt.font.LineBreakMeasurer;
import java.awt.font.ShapeGraphicAttribute;
import java.awt.font.TextLayout;
import java.awt.geom.AffineTransform;
import java.awt.geom.Ellipse2D;
import java.awt.image.BufferedImage;
import java.text.AttributedCharacterIterator;
import java.text.AttributedString;
import java2d.Surface;


/**
 * Demonstrates how to build an AttributedString and then render the
 * string broken over lines.
 */
@SuppressWarnings("serial")
public class AttributedStr extends Surface {

    static final Color black = new Color(20, 20, 20);
    static final Color blue = new Color(94, 105, 176);
    static final Color yellow = new Color(255, 255, 140);
    static final Color red = new Color(149, 43, 42);
    static final Color white = new Color(240, 240, 255);
    static final String text =
            "  A quick brown  fox  jumped  over the lazy duke  ";
    static final AttributedString as = new AttributedString(text);
    static AttributedCharacterIterator aci;

    static {
        Shape shape = new Ellipse2D.Double(0, 25, 12, 12);
        ShapeGraphicAttribute sga = new ShapeGraphicAttribute(shape,
                GraphicAttribute.TOP_ALIGNMENT, false);
        as.addAttribute(CHAR_REPLACEMENT, sga, 0, 1);


        Font font = new Font("sanserif", BOLD | ITALIC, 20);
        int index = text.indexOf("quick");
        as.addAttribute(FONT, font, index, index + 5);

        index = text.indexOf("brown");
        font = new Font(Font.SERIF, BOLD, 20);
        as.addAttribute(FONT, font, index, index + 5);
        as.addAttribute(FOREGROUND, red, index, index + 5);

        index = text.indexOf("fox");
        AffineTransform fontAT = new AffineTransform();
        fontAT.rotate(Math.toRadians(10));
        Font fx = new Font(Font.SERIF, BOLD, 30).deriveFont(fontAT);
        as.addAttribute(FONT, fx, index, index + 1);
        as.addAttribute(FONT, fx, index + 1, index + 2);
        as.addAttribute(FONT, fx, index + 2, index + 3);

        fontAT.setToRotation(Math.toRadians(-4));
        fx = font.deriveFont(fontAT);
        index = text.indexOf("jumped");
        as.addAttribute(FONT, fx, index, index + 6);

        font = new Font(Font.SERIF, BOLD | ITALIC, 30);
        index = text.indexOf("over");
        as.addAttribute(UNDERLINE, UNDERLINE_ON, index, index + 4);
        as.addAttribute(FOREGROUND, white, index, index + 4);
        as.addAttribute(FONT, font, index, text.length());

        font = new Font(Font.DIALOG, PLAIN, 20);
        int i = text.indexOf("duke");
        as.addAttribute(FONT, font, index, i - 1);

        BufferedImage bi = new BufferedImage(4, 4, BufferedImage.TYPE_INT_ARGB);
        bi.setRGB(0, 0, 0xffffffff);
        TexturePaint tp = new TexturePaint(bi, new Rectangle(0, 0, 4, 4));
        as.addAttribute(BACKGROUND, tp, i, i + 4);
        font = new Font(Font.SERIF, BOLD, 40);
        as.addAttribute(FONT, font, i, i + 4);
    }

    public AttributedStr() {
        setBackground(Color.white);

        Font font = getFont("A.ttf");
        if (font != null) {
            font = font.deriveFont(PLAIN, 70);
        } else {
            font = new Font(Font.SERIF, PLAIN, 50);
        }
        int index = text.indexOf("A") + 1;
        as.addAttribute(FONT, font, 0, index);
        as.addAttribute(FOREGROUND, white, 0, index);

        font = new Font(Font.DIALOG, PLAIN, 40);
        int size = getFontMetrics(font).getHeight();
        BufferedImage bi =
                new BufferedImage(size, size, BufferedImage.TYPE_INT_ARGB);
        Graphics2D big = bi.createGraphics();
        big.drawImage(getImage("snooze.png"), 0, 0, size, size, null);
        ImageGraphicAttribute iga =
                new ImageGraphicAttribute(bi, GraphicAttribute.TOP_ALIGNMENT);
        as.addAttribute(CHAR_REPLACEMENT, iga, text.length() - 1, text.length());

        aci = as.getIterator();
    }

    @Override
    public void render(int w, int h, Graphics2D g2) {

        float x = 5, y = 0;
        FontRenderContext frc = g2.getFontRenderContext();
        LineBreakMeasurer lbm = new LineBreakMeasurer(aci, frc);

        g2.setPaint(new GradientPaint(0, h, blue, w, 0, black));
        g2.fillRect(0, 0, w, h);

        g2.setColor(white);

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