JLabel文字阴影
JLabel text shadow
我有一个带文字的 JLabel
。文本以不同的颜色显示,并且由于我也希望背景改变颜色,所以有时我发现文本很难阅读。这就是为什么我想像这样给字体添加阴影:
谁能告诉我如何在 Java Swing 标签中获得这种效果,或者,如果不可能,我应该改用哪个 Swing 组件?
您可以将文本转换为轮廓并描边。
import javax.swing.*;
import java.awt.*;
import java.awt.font.FontRenderContext;
import java.awt.font.TextLayout;
import java.awt.image.BufferedImage;
class Test extends JFrame {
public Test() throws HeadlessException {
setSize(500, 500);
add(new JOutlineLabel("test"));
}
class JOutlineLabel extends JComponent {
int width = 3;
Shape outline;
public JOutlineLabel(String string) {
BufferedImage temp = new BufferedImage(200, 200, BufferedImage.TYPE_4BYTE_ABGR);
Graphics2D g2 = temp.createGraphics();
FontRenderContext frc = g2.getFontRenderContext();
Font font = new Font("Helvetica", 1, 60);
TextLayout textLayout = new TextLayout(string, font, frc);
outline = textLayout.getOutline(null);
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g2.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
g2.translate(0, outline.getBounds().height);
g2.setColor(Color.blue);
g2.setStroke(new BasicStroke(width));
g2.draw(outline);
}
}
public static void main(String[] args) {
new Test().setVisible(true);
}
}
您需要避免在每次绘制时执行重量级操作,例如实例化字体、将文本转换为轮廓等。
我有一个带文字的 JLabel
。文本以不同的颜色显示,并且由于我也希望背景改变颜色,所以有时我发现文本很难阅读。这就是为什么我想像这样给字体添加阴影:
谁能告诉我如何在 Java Swing 标签中获得这种效果,或者,如果不可能,我应该改用哪个 Swing 组件?
您可以将文本转换为轮廓并描边。
import javax.swing.*;
import java.awt.*;
import java.awt.font.FontRenderContext;
import java.awt.font.TextLayout;
import java.awt.image.BufferedImage;
class Test extends JFrame {
public Test() throws HeadlessException {
setSize(500, 500);
add(new JOutlineLabel("test"));
}
class JOutlineLabel extends JComponent {
int width = 3;
Shape outline;
public JOutlineLabel(String string) {
BufferedImage temp = new BufferedImage(200, 200, BufferedImage.TYPE_4BYTE_ABGR);
Graphics2D g2 = temp.createGraphics();
FontRenderContext frc = g2.getFontRenderContext();
Font font = new Font("Helvetica", 1, 60);
TextLayout textLayout = new TextLayout(string, font, frc);
outline = textLayout.getOutline(null);
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g2.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
g2.translate(0, outline.getBounds().height);
g2.setColor(Color.blue);
g2.setStroke(new BasicStroke(width));
g2.draw(outline);
}
}
public static void main(String[] args) {
new Test().setVisible(true);
}
}
您需要避免在每次绘制时执行重量级操作,例如实例化字体、将文本转换为轮廓等。