有人举过一个例子,说明如何沿java2d中的路径绘制阿拉伯或希伯来文字吗?
我看这个例子http://www.java2s.com/Code/Java/2D-Graphics-GUI/Drawtextalongacurve.htm,但是当我用阿拉伯语或希伯来语文字尝试时,它不起作用。我有镜面效果。
谢谢。
最佳答案
首先确保您的Java代码保存在UTF-8中
然后一种简单的解决方案是像这样反转文本:
String s = (new StringBuffer("מה הבעיה אחי?")).reverse().toString();
但这会导致特殊字符(例如(,{,>)
正确的方法是使用layoutGlyphVector方法
给它Font.LAYOUT_RIGHT_TO_LEFT标志:
GlyphVector gv = font.layoutGlyphVector(g2.getFontRenderContext(), s.toCharArray(), 0, s.length(), Font.LAYOUT_RIGHT_TO_LEFT);
代替
GlyphVector gv = font.createGlyphVector(frc, s,);
然后您的文本将正确布局:
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.Shape;
import java.awt.font.FontRenderContext;
import java.awt.font.GlyphVector;
import java.awt.geom.AffineTransform;
import java.awt.geom.Point2D;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class RollingText extends JPanel {
public void paint(Graphics g) {
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON);
String s = "מה הבעיה אחי?";
Font font = new Font("LucidaSans", Font.PLAIN, 24);
FontRenderContext frc = g2.getFontRenderContext();
g2.translate(40, 80);
GlyphVector gv = font.layoutGlyphVector(g2.getFontRenderContext(), s.toCharArray(), 0, s.length(), Font.LAYOUT_RIGHT_TO_LEFT);
int length = gv.getNumGlyphs();
for (int i = 0; i < length; i++) {
Point2D p = gv.getGlyphPosition(i);
double theta = (double) i / (double) (length - 1) * Math.PI / 4;
AffineTransform at = AffineTransform.getTranslateInstance(p.getX(), p.getY());
at.rotate(theta);
Shape glyph = gv.getGlyphOutline(i);
Shape transformedGlyph = at.createTransformedShape(glyph);
g2.fill(transformedGlyph);
}
}
public static void main(String[] args) {
JFrame f = new JFrame("RollingText v1.0");
f.getContentPane().add(new RollingText());
f.setSize(600, 300);
f.setVisible(true);
}
}