java swing 把控件转化为BufferedImage

阅读更多

java swing 把控件映射为BufferedImage

如何把java swing的可视控件 转化为BufferedImage 呢?

直接上代码:

/***
	     * convert JTextArea to image
	     * @param ta
	     * @param destFile
	     * @param format
	     */
	    public static BufferedImage genericImage(JComponent ta,File destFile,String format){//TODO 如何提高分辨率
			BufferedImage img = new BufferedImage(ta.getWidth(), ta.getHeight(), BufferedImage.TYPE_INT_RGB);
	        Graphics2D g2d = img.createGraphics();
	        ta.printAll(g2d);
	        g2d.dispose();
	        if(!ValueWidget.isNullOrEmpty(destFile)){
	        	try {
		            ImageIO.write(img, format/*"jpg"*/, destFile);
		        } catch (IOException ex) {
		            ex.printStackTrace();
		        }
	        }
	        
	        return img;
		}

 

如何把BufferedImage 复制到剪切板:

/***
	 * 复制图片到剪切板
	 * @param image
	 */
	public static void setClipboardImage(Container frame, final Image image) {
		Transferable trans = new Transferable() {
			@Override
			public Object getTransferData(DataFlavor flavor)
					throws UnsupportedFlavorException, IOException {
				if (isDataFlavorSupported(flavor)) {
					return image;
				}
				throw new UnsupportedFlavorException(flavor);
			}

			@Override
			public DataFlavor[] getTransferDataFlavors() {
				return new DataFlavor[] { DataFlavor.imageFlavor };
			}

			@Override
			public boolean isDataFlavorSupported(DataFlavor flavor) {
				return DataFlavor.imageFlavor.equals(flavor);
			}
		};
		
		frame.getToolkit().getSystemClipboard().setContents(trans, null);
	}

 

 

 

调用:

BufferedImage img =ImageHWUtil.genericImage(ta, null, "jpg"/*picFormat*/);
					if(ValueWidget.isNullOrEmpty(img)){
						return;
					}
					ComponentUtil.setClipboardImage(ta.getParent(),img);
					ToastMessage toastMessage = new ToastMessage("复制图片到剪切板",3000);
		            toastMessage.setVisible(true);

 

下面是详细工具类:

package com.swing.component;

import java.awt.Color;
import java.awt.Container;
import java.awt.Frame;
import java.awt.Image;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JProgressBar;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JTextPane;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.Document;
import javax.swing.text.JTextComponent;

import com.common.dict.Constant2;
import com.common.util.SystemHWUtil;
import com.common.util.TypeUtil;
import com.common.util.WindowUtil;
import com.io.hw.file.util.FileUtils;
import com.string.widget.util.ValueWidget;
import com.swing.menu.MenuUtil2;
import com.swing.messagebox.GUIUtil23;
import com.time.util.TimeHWUtil;

public final class ComponentUtil {
	/***
	 * 为了防止JTextField 重复增加 DocumentListener
	 */
	public static List tfs = new ArrayList();

	/***
	 * 获取指定页面 复选框被选中的个数
	 * 
	 * @param checkBoxes
	 * @param startIndex
	 *            :currentPage * size_per_page
	 * @param count
	 * @return
	 */
	public static int getSelSum(List checkBoxes, int startIndex, int count) {
		if (checkBoxes == null || checkBoxes.size() == 0) {
			return 0;
		} else {
			JCheckBox[] chkArr = getCurrentPageChkbox(checkBoxes, startIndex,
					count);
			if (chkArr == null) {
				return 0;
			}
			int tmp = 0;
			for (int i = 0; i < chkArr.length; i++) {
				JCheckBox array_element = chkArr[i];
				tmp += TypeUtil.bool2int(array_element.isSelected());
			}
			return tmp;
		}
	}

	/***
	 * 
	 * @param checkBoxes
	 * @param startIndex
	 *            :0,5,10,15 ;if =-1,indicate no paging
	 * @param count
	 *            :size of per page
	 */
	public static void setSelect(List checkBoxes, int startIndex, int count) {
		JCheckBox[] chkArr = getCurrentPageChkbox(checkBoxes, startIndex, count);
		if (ValueWidget.isNullOrEmpty(chkArr)) {
			return;
		}
		for (int i = 0; i < chkArr.length; i++) {
			JCheckBox chk = chkArr[i];
			chk.setSelected(true);
//			System.out.println(2);
		}
	}

	/***
	 * 
	 * @param checkBoxes
	 * @param startIndex
	 *            :0,5,10,15 ;if =-1,indicate no paging and omit count
	 * @param count
	 *            :omit when startIndex=-1
	 * @return
	 */
	public static JCheckBox[] getCurrentPageChkbox(List checkBoxes,
			int startIndex, int count) {
		if (checkBoxes == null || checkBoxes.size() == 0) {
			return null;
		} else {
			int endIndex = startIndex + count;
			int sum_chk = checkBoxes.size();
			if (/*startIndex == -1*/startIndex <0) {
				startIndex = 0;
			} else {
				if (sum_chk < endIndex) {
					endIndex = sum_chk;
				}
			}
			JCheckBox[] chkArr = new JCheckBox[endIndex - startIndex];
			int index3 = 0;
			for (int i = startIndex; i < endIndex&i7){
//			length=length-17;
//		}
		try {
			doc.insertString(length, result, set);
			length = length + result.length();
			if (isAddDivide) {
				doc.insertString(length, SystemHWUtil.DIVIDING_LINE
						+ SystemHWUtil.CRLF, null);
			}
		} catch (BadLocationException e) {
			e.printStackTrace();
			GUIUtil23.warningDialog(e.getMessage());
		}

	}

	/***
	 * 在实际使用过程中，应该放在线程中
	 * 
	 * @param in
	 * @param sourceSize
	 *            : 输入流的长度，即要读取的字节个数
	 * @param targfile
	 */
	public static void progress(JProgressBar copyProgressBar, InputStream in,
			long sourceSize, File targfile) {
		FileOutputStream target = null;
		try {
			int bytesArrLeng = 0;
			if (sourceSize < SystemHWUtil.BUFF_SIZE_1024) {//
				bytesArrLeng = (int) sourceSize;
			} else {
				long shangOne = sourceSize / SystemHWUtil.NUMBER_100;
				if (shangOne == 0) {// sourceSize<100
					shangOne = shangOne + 1;
				}

				if (shangOne <= SystemHWUtil.BUFF_SIZE_1024) {
					bytesArrLeng = (int) shangOne;
				} else {
					long shangTwo = shangOne / SystemHWUtil.BUFF_SIZE_1024;
					if (shangOne % SystemHWUtil.BUFF_SIZE_1024 != 0) {
						shangTwo = shangTwo + 1L;
					}
					bytesArrLeng = (int) (shangOne / shangTwo);
				}
			}
			System.out.println("字节数组的长度是：" + bytesArrLeng);
			target = new FileOutputStream(targfile);
			byte[] buffer = new byte[bytesArrLeng];
			int byteNum;
			long hasReadByte = 0L;// 已经读取的字节个数
			float result;
			int progressSize = 0;
			while ((byteNum = in.read(buffer)) != SystemHWUtil.NEGATIVE_ONE) {
				target.write(buffer, 0, byteNum);
				hasReadByte = hasReadByte + byteNum;
				result = (float) ((double) hasReadByte / sourceSize);
				progressSize = Math.round(result * SystemHWUtil.NUMBER_100);
				updateProgress(copyProgressBar, progressSize);
			}
			if (progressSize < SystemHWUtil.NUMBER_100) {
				progressSize = SystemHWUtil.NUMBER_100;
				updateProgress(copyProgressBar, progressSize);
			}
			copyProgressBar.setForeground(Color.blue);

		} catch (Exception e) {
			e.printStackTrace();
			GUIUtil23.errorDialog(e);
			// copyFileBtn.setEnabled(true);
		} finally {
			if (in != null) {
				try {
					in.close();
				} catch (IOException e) {
					e.printStackTrace();
					GUIUtil23.errorDialog(e);
				}
				in = null;
			}
			if (target != null) {
				try {
					target.close();
				} catch (IOException e) {
					e.printStackTrace();
					GUIUtil23.errorDialog(e);
				}
				target = null;
			}
		}
	}

	/***
	 * 更新进度条上得进度数字
	 * 
	 * @param copyProgressBar
	 * @param progressSize
	 */
	private static void updateProgress(JProgressBar copyProgressBar,
			int progressSize) {
		copyProgressBar.setString(progressSize + "%");
		copyProgressBar.setValue(progressSize);
	}
	/***
	 * 复制图片到剪切板
	 * @param image
	 */
	public static void setClipboardImage(Container frame, final Image image) {
		Transferable trans = new Transferable() {
			@Override
			public Object getTransferData(DataFlavor flavor)
					throws UnsupportedFlavorException, IOException {
				if (isDataFlavorSupported(flavor)) {
					return image;
				}
				throw new UnsupportedFlavorException(flavor);
			}

			@Override
			public DataFlavor[] getTransferDataFlavors() {
				return new DataFlavor[] { DataFlavor.imageFlavor };
			}

			@Override
			public boolean isDataFlavorSupported(DataFlavor flavor) {
				return DataFlavor.imageFlavor.equals(flavor);
			}
		};
		
		frame.getToolkit().getSystemClipboard().setContents(trans, null);
	}
	public static BufferedImage getClipboardImage(Frame frame) {
		// java.lang.ClassCastException: sun.awt.datatransfer.TransferableProxy cannot be cast to sun.awt.datatransfer.ClipboardTransferable
		Transferable trans=frame.getToolkit().getSystemClipboard().getContents(null);
		BufferedImage image=null;
//		if(trans instanceof ClipboardTransferable){
//		ClipboardTransferable clipboardTrans =(ClipboardTransferable)trans;
		
		try {
			if (null != trans && trans.isDataFlavorSupported(DataFlavor.imageFlavor)) {   
			Object obj22=trans.getTransferData(DataFlavor.imageFlavor);
			if(!ValueWidget.isNullOrEmpty(obj22)){
				if(obj22 instanceof BufferedImage){
				image=(BufferedImage)obj22;
				}
			}
			}
		} catch (UnsupportedFlavorException e1) {
			e1.printStackTrace();
			GUIUtil23.errorDialog(e1);
		} catch (IOException e1) {
			e1.printStackTrace();
			GUIUtil23.errorDialog(e1);
		}
//		}
		
		
		/*try {
			Map map=(Map)ReflectHWUtils.getObjectValue(clipboardTrans, "flavorsToData");
			Object val=null;
			for(Object obj:map.keySet()){
				val=map.get(obj);
				break;
			}
			byte[] data=(byte[])ReflectHWUtils.getObjectValue(val, "data");
			
			return data;//(BufferedImage)trans.getTransferData(trans.getTransferDataFlavors()[0]);
		} catch (SecurityException e) {
			e.printStackTrace();
		} catch (IllegalArgumentException e) {
			e.printStackTrace();
		} catch (NoSuchFieldException e) {
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		}*/
		return image;
	}
	/***
	 * 
	 * @param comb
	 * @param urls
	 */
	public static void fillComboBox(JComboBox comb,String urls[]){
		if(comb==null||ValueWidget.isNullOrEmpty(urls)){
			return;
		}
		for(int i=0;i comb,String picUrls){
		if(!ValueWidget.isNullOrEmpty(picUrls)){//为空判断
			String urls[]=picUrls.split(Constant2.SHAREDPICDIVISION);
			ComponentUtil.fillComboBox(comb, SystemHWUtil.unique(urls));
		}
	}
	public static JComboBox comboBoxSelectedHandle(JComboBox comboBox,final JTextField ipTextField){
		if(ValueWidget.isNullOrEmpty(comboBox)){
			comboBox = new JComboBox();
		}
		comboBox.addMouseListener(new MouseAdapter() {
			@Override
			public void mouseClicked(MouseEvent e) {
				JComboBox target=(JComboBox)e.getSource();
				String  selectedPort=(String)target.getSelectedItem();
                if(!ValueWidget.isNullOrEmpty(selectedPort)){
                	ipTextField.setText(selectedPort);
                }
//				System.out.println(e.getSource());
			}
		});
		comboBox.addItemListener(new ItemListener() {
			public void itemStateChanged(ItemEvent e) {
				JComboBox target=(JComboBox)e.getSource();
				String  selectedPort=(String)target.getSelectedItem();
                if(!ValueWidget.isNullOrEmpty(selectedPort)){
                	ipTextField.setText(selectedPort);
                }
			}
		});
		return comboBox;
	}
	
	/***
	 * 
	 * @param tc
	 */
	public static void trim(JTextComponent tc){
		String text=tc.getText();
		if(text!=null && text.length()>0){
			tc.setText(text.trim());
		}
	}
}

 

 

 

 

 

• 
• 大小: 59.8 KB

• 查看图片附件