[英]How to Change Font Size in drawString Java
How to make the font size bigger in g.drawString("Hello World",10,10);
如何让
g.drawString("Hello World",10,10);
的字体变大g.drawString("Hello World",10,10);
? ?
g.setFont(new Font("TimesRoman", Font.PLAIN, fontSize));
Where fontSize is a int.其中 fontSize 是一个整数。 The API for drawString states that the x and y parameters are coordinates, and have nothing to do with the size of the text.
drawString的API声明 x 和 y 参数是坐标,与文本大小无关。
Because you can't count on a particular font being available, a good approach is to derive a new font from the current font.因为您不能指望某种特定字体可用,所以一个好方法是从当前字体派生出一种新字体。 This gives you the same family, weight, etc. just larger...
这给你相同的家庭,重量等,只是更大......
Font currentFont = g.getFont();
Font newFont = currentFont.deriveFont(currentFont.getSize() * 1.4F);
g.setFont(newFont);
You can also use TextAttribute.您还可以使用 TextAttribute。
Map<TextAttribute, Object> attributes = new HashMap<>();
attributes.put(TextAttribute.FAMILY, currentFont.getFamily());
attributes.put(TextAttribute.WEIGHT, TextAttribute.WEIGHT_SEMIBOLD);
attributes.put(TextAttribute.SIZE, (int) (currentFont.getSize() * 1.4));
myFont = Font.getFont(attributes);
g.setFont(myFont);
The TextAttribute method often gives one even greater flexibility. TextAttribute 方法通常提供更大的灵活性。 For example, you can set the weight to semi-bold, as in the example above.
例如,您可以将权重设置为半粗体,如上例所示。
One last suggestion... Because the resolution of monitors can be different and continues to increase with technology, avoid adding a specific amount (such as getSize()+2
or getSize()+4
) and consider multiplying instead.最后一个建议...因为显示器的分辨率可能会有所不同,并且会随着技术不断增加,所以避免添加特定数量(例如
getSize()+2
或getSize()+4
)并考虑相乘。 This way, your new font is consistently proportional to the "current" font ( getSize() * 1.4
), and you won't be editing your code when you get one of those nice 4K monitors.这样,您的新字体始终与“当前”字体 (
getSize() * 1.4
) 成正比,并且当您获得那些不错的 4K 显示器之一时,您将不会编辑您的代码。
Font myFont = new Font ("Courier New", 1, 17);
The 17 represents the font size. 17 代表字体大小。 Once you have that, you can put:
一旦你有了它,你可以把:
g.setFont (myFont);
g.drawString ("Hello World", 10, 10);
code example below:下面的代码示例:
g.setFont(new Font("TimesRoman", Font.PLAIN, 30));
g.drawString("Welcome to the Java Applet", 20 , 20);
I've an image located at here , Using below code.我有一张图片位于这里,使用下面的代码。 I am able to contgrol any things on the text that i wanted to write (Eg,signature,Transparent Water mark, Text with differnt Font and size).
我能够控制我想写的文本上的任何内容(例如,签名、透明水印、具有不同字体和大小的文本)。
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.font.TextAttribute;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;
import javax.imageio.ImageIO;
public class ImagingTest {
public static void main(String[] args) throws IOException {
String url = "http://images.all-free-download.com/images/graphiclarge/bay_beach_coast_coastline_landscape_nature_nobody_601234.jpg";
String text = "I am appending This text!";
byte[] b = mergeImageAndText(url, text, new Point(100, 100));
FileOutputStream fos = new FileOutputStream("so2.png");
fos.write(b);
fos.close();
}
public static byte[] mergeImageAndText(String imageFilePath,
String text, Point textPosition) throws IOException {
BufferedImage im = ImageIO.read(new URL(imageFilePath));
Graphics2D g2 = im.createGraphics();
Font currentFont = g2.getFont();
Font newFont = currentFont.deriveFont(currentFont.getSize() * 1.4F);
g2.setFont(newFont);
Map<TextAttribute, Object> attributes = new HashMap<>();
attributes.put(TextAttribute.FAMILY, currentFont.getFamily());
attributes.put(TextAttribute.WEIGHT, TextAttribute.WEIGHT_SEMIBOLD);
attributes.put(TextAttribute.SIZE, (int) (currentFont.getSize() * 2.8));
newFont = Font.getFont(attributes);
g2.setFont(newFont);
g2.drawString(text, textPosition.x, textPosition.y);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ImageIO.write(im, "png", baos);
return baos.toByteArray();
}
}
All you need to do is this: click on (window) on the dropdown manue on top of your screen.您需要做的就是:单击屏幕顶部下拉菜单上的(窗口)。 click on (Editor).
单击(编辑器)。 click on (zoom in) as many times as you need to.
根据需要多次单击(放大)。
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