我想在图像中添加额外的空间,我们称之为"span"。
我的代码是:
BufferedImage newImage = new BufferedImage(image2.getWidth(), image2.getHeight()+200, image2.getType());
Graphics g = newImage.getGraphics();
g.setColor(Color.white);
g.fillRect(0,0,image.getWidth(),image.getHeight()+100);
g.drawImage(image, 0, 100, null);
g.setColor(Color.white);
g.dispose();
RenderedImage rendImage = newImage;
String newUrl8006002 = splitUrl[0]+"-800x6002.jpg";
File file = new File(newUrl8006002);
ImageIO.write(rendImage, "jpg", file);
问题是,底部的图像有黑色背景,我期望白色(顶部是白色(。
您知道要更改什么才能在整个图像中添加白色背景吗?
这个怎么样:
static BufferedImage growY(BufferedImage im, int span, Color color)
{
BufferedImage newImage = new BufferedImage(im.getWidth(), im.getHeight()+span, im.getType());
int topSpan = span/2;
int botSpan = span - topSpan;
Graphics g = newImage.getGraphics();
g.setColor(color);
g.fillRect(0, 0, newImage.getWidth(), topSpan);
g.fillRect(0, topSpan+im.getHeight(), newImage.getWidth(), botSpan);
g.drawImage(im, 0, topSpan, null);
g.dispose();
return newImage;
}