获取Paint或PaintComponent生成的图像是一个常见的图像处理任务。下面是一种使用Java编程语言实现获取Paint/PaintComponent图像的方法:
java.awt.Component component = ...; // 获取Component对象,如:JFrame、JPanel、JLabel等
java.awt.Paint paint = component.getPaint();
java.awt.Paint paint = ...; // 获取Paint对象
boolean isText = false;
for (String name : paint.getName()) {
if (name.endsWith("Text") || name.startsWith("Font")) { // 如果是文本绘制,则标记文本属性
isText = true;
break;
}
}
如果需要特定属性的值,可以使用以下代码获取:
java.awt.Paint paint = ...; // 获取Paint对象
boolean isText = false;
int red = 0;
int green = 0;
int blue = 0;
if (paint.getRed() != -1) {
red = paint.getRed();
}
if (paint.getGreen() != -1) {
green = paint.getGreen();
}
if (paint.getBlue() != -1) {
blue = paint.getBlue();
}
java.awt.BufferedImage image = new BufferedImage(component.getWidth(), component.getHeight(), BufferedImage.TYPE_INT_ARGB);
Graphics2D g = image.createGraphics();
Graphics2D componentGraphics = (Graphics2D) component.getGraphics();
componentGraphics.drawImage(image, 0, 0, component.getWidth(), component.getHeight(), null);
paint.createImage(x, y, width, height, params); // 创建PaintImage对象(如:Image image = paint.createImage(200, 300))
g.drawImage(image, x, y, width, height, Color.WHITE, null); // 绘制图像
g.dispose();
通过以上方法你可以获得Paint/PaintComponent生成的图像。
领取专属 10元无门槛券
手把手带您无忧上云