How to convert from BufferedImage to JavaFX 2.2 Image

最新推荐文章于 2024-07-08 02:30:59 发布

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最新推荐文章于 2024-07-08 02:30:59 发布

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本文介绍如何在JavaFX中直接加载和使用BufferedImage。通过使用WritableImage类及其PixelWriter接口，可以实现从BufferedImage到JavaFX Image的转换，而无需先将图像写入磁盘。这种方法提供了更灵活和高效的图像处理方式。

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http://blog.idrsolutions.com/2012/11/convert-bufferedimage-to-javafx-image/

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Until recently, if you wanted to load a BufferedImage in JavaFX you were out of luck – the only way to do it was to write out the BufferedImage to disk and then read it back in as a JavaFX Image.

But, in August when JavaFX 2.2 was released, the update included a class called WritableImage which extends Image. Along with PixelWriter and PixelReader classes, this gives us greater control over images in JavaFX.

Using the PixelWriter and the getRGB method of BufferedImage, we are now able to read a BufferedImage into a WritableImage. As WritableImage extends Image, we can now use this however we would an Image!

Here’s how:

        BufferedImage bf = null;
         try {
            bf = ImageIO.read( new File("C:/location/of/image.png"));
        } catch (IOException ex) {
            System.out.println("Image failed to load.");
        }

        WritableImage wr = null;
         if (bf != null) {
            wr = new WritableImage(bf.getWidth(), bf.getHeight());
            PixelWriter pw = wr.getPixelWriter();
             for ( int x = 0; x < bf.getWidth(); x++) {
                 for ( int y = 0; y < bf.getHeight(); y++) {
                    pw.setArgb(x, y, bf.getRGB(x, y));
                }
            }
        }

        ImageView imView = new ImageView(wr);

Alternatively, you could use the toFXImage method from SwingFXUtils, but where’s the fun in that?