SWT从文件流InputStream创建Image

最新推荐文章于 2021-02-24 11:26:25 发布

原创最新推荐文章于 2021-02-24 11:26:25 发布 · 4.2k 阅读

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本文详细介绍了如何在Java应用中加载并使用不同类型的UI组件图标，并通过自定义方法实现从原始二进制数据到Java Image对象的转换，旨在提高UI元素的定制性和灵活性。

private void setBtnImage(Composite btnComposite)
    {
        Display display = btnComposite.getDisplay();

        addButton.setImage(new Image(display, this.getClass()
                .getClassLoader()
                .getResourceAsStream("icons//add.gif")));
        deleteButton.setImage(new Image(display, this.getClass()
                .getClassLoader()
                .getResourceAsStream("icons//delete.gif")));
        upButton.setImage(new Image(display, this.getClass()
                .getClassLoader()
                .getResourceAsStream("icons//up.gif")));
        downButton.setImage(new Image(display, this.getClass()
                .getClassLoader()
                .getResourceAsStream("icons//down.gif")));
    }

//getClass().getResourceAsStream("icons//delete.gif"))
className.class.getResourceAsStream("buttonImage.gif")
this.getClass().getClassLoader().getResourceAsStream("icons//add.gif")));

public Object nativeToJava(TransferData transferData){                 
    if (!isSupportedType(transferData)) return null;                   
                                                                       
    byte[] buffer = (byte[])super.nativeToJava(transferData);          
    if (buffer == null) return null;                                   
                                                                       
    ImageData imdata;                                                  
	      try {                                                          
        ByteArrayInputStream in = new ByteArrayInputStream(buffer);    
        DataInputStream readIn = new DataInputStream(in);              
        imdata = new ImageData(readIn);                                
        readIn.close();                                                
    } catch (IOException ex) {                                         
        return null;                                                   
    }                                                                  
    return imdata;                                                     
}