[英]how can i get a jPanel that is inside a JtabbedPane
我正在用Java開發圖像編輯器,我在JTabbedPane中插入了一個JPanel,以創建一個JTabbedPane,它的選項卡呈現了我想應用到圖像的圖像濾鏡,我不知道如何獲取內部的JPanel選擇TabbedPane來決定篩選器,因為當我執行“ jTabbedPane1.getSelectedComponent();”時,我只能獲得一個組件,而不是JComponent。
任何人都知道,對不起我的英語,謝謝。
這是我的代碼的一部分:
package javaapplication22;
import javax.swing.JPanel;
/**
*
* @author iDoc
*/
public abstract class FilterTab extends JPanel {
public FilterTab() {
}
protected void ApplyFilter() {
}
protected void ResetFilter() {
}
}
public class InvertFilterTab extends FilterTab {
private InvertFilter filter;
public InvertFilterTab ()
{
filter = new InvertFilter();
}
/**
*
* @param originalImage
* @param modifiedImage
*/
public void ApplyFilter(BufferedImage originalImage, BufferedImage modifiedImage) {
modifiedImage = filter.filter(originalImage, modifiedImage);
}
@Override
public void ResetFilter() {
}
}
private void button1ActionPerformed(java.awt.event.ActionEvent evt) {
BufferedImage originalImage = jOriginalPanel.getImage();
// BufferedImage modifiedImage = new BufferedImage(
// originalImage.getWidth(), originalImage.getHeight(),
// BufferedImage.TYPE_INT_ARGB);
//modifiedImage =
FilterTab ft = jTabbedPane1.getSelectedComponent(); <--- the problem is here
filter.filter(originalImage, modifiedImage);
jModifiedPanel.changeImage(modifiedImage);
jModifiedPanel.repaint();
簡單地轉換結果...
FilterTab tab = (FilterTab)jTabbedPane1.getSelectedComponent();
記住, JPanel
從JComponent
擴展而來, JComponent
從Container
擴展而來, Container
從Component
擴展而來
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