调整动画GIF的大小，同时使用java保持动画 [英] resizing animated GIF while keeping it's animation using java

问题描述

我在java中使用Graphics2D来调整图像大小，它与jpg，png和其他格式完美配合。
我的问题是动画GIF图像，重新调整大小后动画消失了！

i am using Graphics2D in java to resize images, it works perfect with jpg,png and other formats. my problem is the animated GIF images, after re-sizing the animation is gone!

这里是使用的方法：

    private BufferedImage doResize(int newWidth, int newHeight, double scaleX,
        double scaleY, BufferedImage source) {

    GraphicsConfiguration gc = getDefaultConfiguration();
    BufferedImage result = gc.createCompatibleImage(newWidth, newHeight, source.getColorModel().getTransparency());
    Graphics2D g2d = null;

    try {
        g2d = result.createGraphics();
        g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
        g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
        g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g2d.scale(scaleX, scaleY);
        g2d.drawImage(source, 0, 0, null);
    } finally {
        if (g2d != null) {
            g2d.dispose();
        }
    }

    return result;
}

所以，任何线索如何在重新调整大小后保持动画gif ？
谢谢。

so, any clues how can i keep on the animated gif after re-sizing? Thanks.

推荐答案

所以我知道这是旧的，但我找到了解决方案，我使用Java 8不确定如果它适用于其他版本。

So I know this is old but I found a solution, I am using Java 8 not sure if it will work with other versions.

    ImageIcon image = ? (whatever/wherever your gif is)
    int width = 100;
    int height = 100;
    image.setImage(image.getImage().getScaledInstance(width, height, Image.SCALE_DEFAULT));

你可以将SCALE_DEFAULT改为这里列出的那些除了SCALE_SMOOTH和SCALE_AREA_AVREAGING对我不起作用，这是空白的
https：// docs。 oracle.com/javase/7/docs/api/java/awt/Image.html

you can change SCALE_DEFAULT to the ones listed here except for SCALE_SMOOTH and SCALE_AREA_AVREAGING didn't work for me, it was blank https://docs.oracle.com/javase/7/docs/api/java/awt/Image.html

这篇关于调整动画GIF的大小，同时使用java保持动画的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！