如何通过Java编辑jpg图像？ [英] How can I edit a jpg image through Java?

问题描述

我已经加载了一个jpg图像，我想在x，y坐标下绘制字母和圆圈。

I have loaded a jpg image in which I want to draw letters and circles, given a x,y coordinate.

我一直试图找出 ImageIcon class

I have been trying to figure out the paintIcon of the ImageIcon class

public void paintIcon(Component c,
                      Graphics g,
                      int x,
                      int y)

<这个方法是否允许我按照我想要的方式编辑jpg图像？什么是组件c和图形g参数？我会在它的身体上添加什么来画圆圈或字母？

Does this method allow me to edit jpg images the way I want to? What are supposd to be the Component c and Graphics g paramethers? What would I add to its body to paint circles or letters?

我正在使用Netbeans 6.5，我是否有内置任务（而不是ImageIcon）？

I'm working on Netbeans 6.5, do I have anything builtin for this task (instead of ImageIcon)?

推荐答案

纯Java方式是使用 ImageIO 到加载图像为 BufferedImage 。然后你可以打电话给 createGraphics（） 获取 Graphics2D 对象;然后，您可以在图像上绘制任何想要的内容。

The pure-Java way is to use ImageIO to load the image as a BufferedImage. Then you can call createGraphics() to get a Graphics2D object; you can then draw whatever you want onto the image.

您可以使用嵌入在<$ c中的 ImageIcon $ c> JLabel 进行显示，你可以添加 MouseListener 和/或 MouseMotionListener 到 JLabel 如果您试图允许用户编辑图像。

You can use an ImageIcon embedded in a JLabel to do the displaying, and you can add a MouseListener and/or a MouseMotionListener to the JLabel if you're trying to allow the user to edit the image.

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