java / swing：将文本字符串转换为Shape [英] java/swing: converting a text string to a Shape

问题描述

我想将一些任意文本转换为Shape（ java.awt.Shape ），然后笔画/填充Shape以绘制它。我怎么能这样做？

解决方案

嗯，我不知道这个答案，但经过一些调整， Eclipse内容帮助我发现这似乎是你所需要的：

编辑：我改变了代码来改变字符串的显示方式，这就是原因你问你问什么:)试试吧。它呈现红色和虚线轮廓的字符串

  import java.awt.BasicStroke; 
 import java.awt.Color; 
 import java.awt.Component; 
 import java.awt.Dimension; 
 import java.awt.Font; 
 import java.awt.Graphics; 
 import java.awt.Graphics2D; 
 import java.awt.RenderingHints; 
 import java.awt.Shape; 
 import java.awt.font.Gly​​phVector; 
 
 import javax.swing.JFrame; 
 import javax.swing.JPanel; 
 
 public class Test扩展JPanel {
 
 private Shape s; 
 $ b $ public Test（）{
 Font f = getFont（）。deriveFont（Font.BOLD，70）; 
 GlyphVector v = f.createGlyphVector（getFontMetrics（f）.getFontRenderContext（），Hello）; 
 s = v.getOutline（）; 
 setPreferredSize（new Dimension（300,300））; 
} 
 @Override 
 protected void paintComponent（Graphics g）{
 super.paintComponent（g）; 
 Graphics2D g2 =（Graphics2D）g.create（）; 
 g2.setRenderingHint（RenderingHints.KEY_ANTIALIASING，RenderingHints.VALUE_ANTIALIAS_ON）; 
 g2.translate（100，150）; 
 g2.rotate（0.4）; 
 g2.setPaint（Color.red）; 
 g2.fill（s）; 
 g2.setPaint（Color.black）; 
 g2.setStroke（new BasicStroke（3，BasicStroke.CAP_BUTT，BasicStroke.JOIN_ROUND，1，new float [] {1,0.4f，1.5f}，0））; 
 g2.draw（s）; 
 
 
 public static void main（String [] args）{
 JFrame f = new JFrame（Test）; 
 Component c = new Test（）; 
 f.getContentPane（）。add（c）; 
 f.setDefaultCloseOperation（JFrame.EXIT_ON_CLOSE）; 
 f.pack（）; 
 f.setVisible（true）; 
 
 
 $ / code $ / pre 
 
 
另外请注意，你可以从字符串调用：
 
 pre $ getGlyphOutline（glyphIndex）
  

I want to convert some arbitrary text to a Shape (java.awt.Shape) and then stroke/fill the Shape to draw it. How can I do this?

解决方案

Hm I did not know the answer to this but after a bit tweaking and poking around in with Eclipse content assist i found this which seems to be what you need:

EDIT: i changed to code to change the way the string is displayed which is the reason you asked what you asked :) Try it. It renders the string with red color and a dashed outline

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.Shape;
import java.awt.font.GlyphVector;

import javax.swing.JFrame;
import javax.swing.JPanel;

public class Test extends JPanel{

    private Shape s;

    public Test() {
        Font f = getFont().deriveFont(Font.BOLD, 70);
        GlyphVector v = f.createGlyphVector(getFontMetrics(f).getFontRenderContext(), "Hello");
        s = v.getOutline();
        setPreferredSize(new Dimension(300,300));
    }
    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D)g.create();
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g2.translate(100, 150);
        g2.rotate(0.4);
        g2.setPaint(Color.red);
        g2.fill(s);
    g2.setPaint(Color.black);
        g2.setStroke(new BasicStroke(3, BasicStroke.CAP_BUTT, BasicStroke.JOIN_ROUND, 1, new float[]{1,0.4f,1.5f}, 0));
        g2.draw(s);
    }

    public static void main(String[] args) {
        JFrame f = new JFrame("Test");
        Component c = new Test();
        f.getContentPane().add(c);
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.pack();
        f.setVisible(true);
    }
}

Also note that you can get the individual characters from the string by calling:

getGlyphOutline(glyphIndex)

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