TreeDrawer is now centered when opened
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parent
d45c2339e1
commit
e6487369ef
@ -16,13 +16,20 @@ package triangle.treeDrawer;
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import java.awt.Container;
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import java.awt.Dimension;
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import java.awt.Rectangle;
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import java.awt.Toolkit;
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import java.awt.event.AdjustmentEvent;
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import java.awt.event.AdjustmentListener;
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import java.awt.event.ComponentAdapter;
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import java.awt.event.ComponentEvent;
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import java.awt.event.WindowAdapter;
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import java.awt.event.WindowEvent;
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import javax.swing.JFrame;
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import javax.swing.JPanel;
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import javax.swing.JScrollBar;
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import javax.swing.JScrollPane;
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import javax.swing.SwingUtilities;
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class DrawerFrame extends JFrame {
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/**
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@ -49,6 +56,19 @@ class DrawerFrame extends JFrame {
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}
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});
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Container contentPane = getContentPane();
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contentPane.add(new JScrollPane(panel));
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final JScrollPane jScrollPane = new JScrollPane(panel);
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contentPane.addComponentListener(new ComponentAdapter() {
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@Override
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public void componentResized(ComponentEvent e) {
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super.componentResized(e);
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jScrollPane.getHorizontalScrollBar().setValue(jScrollPane.getHorizontalScrollBar().getMaximum());
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jScrollPane.getHorizontalScrollBar().setValue(jScrollPane.getHorizontalScrollBar().getValue() / 2);
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}
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});
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contentPane.add(jScrollPane);
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}
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}
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