测量旋转字符串Java的像素高度

import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;

public class RotateStringHeight {
    public static void main(String[] args) {
        String text = "Hello, World!";
        int rotationAngle = 45; // 旋转角度

        // 创建图形环境
        Graphics2D g2d = createGraphics();

        // 设置字体样式和大小
        Font font = new Font("Arial", Font.PLAIN, 12);
        g2d.setFont(font);

        // 获取字体测量信息
        FontMetrics fontMetrics = g2d.getFontMetrics();
        int stringHeight = fontMetrics.getHeight();

        // 旋转字符串并测量高度
        int rotatedStringHeight = measureRotatedStringHeight(g2d, text, rotationAngle);

        System.out.println("原始字符串高度：" + stringHeight);
        System.out.println("旋转后字符串高度：" + rotatedStringHeight);
    }

    private static Graphics2D createGraphics() {
        // 创建图形环境
        // 这里使用JavaFX的场景来创建Graphics对象，也可以使用AWT的方式
        javafx.scene.canvas.Canvas canvas = new javafx.scene.canvas.Canvas(400, 400);
        javafx.scene.canvas.GraphicsContext gc = canvas.getGraphicsContext2D();
        return (Graphics2D) gc;
    }

    private static int measureRotatedStringHeight(Graphics2D g2d, String text, int rotationAngle) {
        // 旋转字符串
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g2d.rotate(Math.toRadians(rotationAngle));

        // 绘制字符串
        g2d.drawString(text, 0, 0);

        // 获取旋转后字符串的像素高度
        FontMetrics fontMetrics = g2d.getFontMetrics();
        int rotatedStringHeight = fontMetrics.getHeight();

        return rotatedStringHeight;
    }
}