Re: [問題] 如何控制放在JLabel裡面的ImageIcon大小?
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上面這段是為了合法散佈原始碼....
下面才是正文
※ 引述《zeat (Lucifer)》之銘言：
: 各位好:
: 如同標題, 我在JLabel裡面使用ImageIcon顯示圖片.
: 但使用者如果選太大張的圖,
: 整個swing視窗就會充滿著圖片...
: 有什麼可以解決的辦法?
在 JavaTM Tutorials - How to Use Icons
http://java.sun.com/docs/books/tutorial/uiswing/components/icon.html
有一個附件 IconDemoApp.java ：
http://java.sun.com/docs/books/tutorial/uiswing/examples/components/IconDemoProject/src/components/IconDemoApp.java
內有放大縮小圖片的程式碼：
/**
* Resizes an image using a Graphics2D object backed by a BufferedImage.
* @param srcImg - source image to scale
* @param w - desired width
* @param h - desired height
* @return - the new resized image
*/
private Image getScaledImage(Image srcImg, int w, int h){
BufferedImage resizedImg = new BufferedImage(w, h,
BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = resizedImg.createGraphics();
g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g2.drawImage(srcImg, 0, 0, w, h, null);
g2.dispose();
return resizedImg;
}
你要不要考慮直接拿去用 (大誤
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