我发现在 Photoshop 中,只需拖动文本即可轻松调整文本大小。我们如何在 Java 中做同样的事情?关于如何在java中调整文本大小有什么想法吗?
添加了在 Photoshop 中调整大小的字母“A”的快照
请让我知道这段代码有什么问题?
public class ResizeImage extends JFrame {
public ResizeImage(){
JPanel panel = new JPanel(){
public void paintComponent(Graphics g) {
// In your paint(Graphics g) method
// Create a buffered image for use as text layer
BufferedImage textLayer = new BufferedImage(240, 240,
BufferedImage.TYPE_INT_RGB);
// Get the graphics instance of the buffered image
Graphics2D gBuffImg = textLayer.createGraphics();
// Draw the string
gBuffImg.drawString("Hello World", 10, 10);
// Rescale the string the way you want it
gBuffImg.scale(200, 50);
// Draw the buffered image on the output's graphics object
g.drawImage(textLayer, 0, 0, null);
gBuffImg.dispose();
}
};
add(panel);
}
public static void main(String [] args){
ResizeImage frame = new ResizeImage();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(300, 300);
frame.setVisible(true);
}
}
一种方法是使用AffineTransform(这个变体也会褪色)。
import java.awt.*;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import javax.swing.*;
import java.io.File;
import javax.imageio.ImageIO;
public class StretchText {
public static void main(String[] args) throws Exception {
// used to stretch the graphics instance sideways
AffineTransform stretch = new AffineTransform();
int w = 640; // image width
int h = 200; // image height
int f = 21; // Font size in px
String s = "The quick brown fox jumps over the lazy dog.";
final BufferedImage bi = new BufferedImage(
w,h,BufferedImage.TYPE_INT_RGB);
Graphics2D g = bi.createGraphics();
g.setFont(new Font("Serif",Font.PLAIN,f));
g.setRenderingHint(
RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
// paint BG
g.setColor(Color.WHITE);
g.fillRect(0, 0, w, h);
g.setColor(Color.BLACK);
for (int i=0; (i*f)+f<=h; i++) {
g.drawString(s, 0, (i*f)+f);
// stretch
stretch.concatenate(
AffineTransform.getScaleInstance(1.18, 1d));
g.setTransform(stretch);
// fade
Color c = g.getColor();
g.setColor(new Color (
c.getRed(),
c.getGreen(),
c.getBlue(),
(int)(c.getAlpha()*.75)));
}
g.dispose();
ImageIO.write(bi, "png", new File(
new File(System.getProperty("user.home")),
"StretchText.png"));
Runnable r = new Runnable() {
@Override
public void run() {
JLabel gui = new JLabel(new ImageIcon(bi));
JOptionPane.showMessageDialog(null, gui);
}
};
SwingUtilities.invokeLater(r);
}
}
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