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TreeDrawer is now centered when opened

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This commit is contained in:
Sandy Brownlee 2022-08-11 10:37:51 +01:00
parent d45c2339e1
commit e6487369ef
1 changed files with 21 additions and 1 deletions
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22
Triangle.Compiler/src/main/java/triangle/treeDrawer/DrawerFrame.java
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@ -16,13 +16,20 @@ package triangle.treeDrawer;
import java.awt.Container; import java.awt.Container;
import java.awt.Dimension; import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.Toolkit; import java.awt.Toolkit;
import java.awt.event.AdjustmentEvent;
import java.awt.event.AdjustmentListener;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import java.awt.event.WindowAdapter; import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent; import java.awt.event.WindowEvent;
import javax.swing.JFrame; import javax.swing.JFrame;
import javax.swing.JPanel; import javax.swing.JPanel;
import javax.swing.JScrollBar;
import javax.swing.JScrollPane; import javax.swing.JScrollPane;
import javax.swing.SwingUtilities;
class DrawerFrame extends JFrame { class DrawerFrame extends JFrame {
/** /**
@ -49,6 +56,19 @@ class DrawerFrame extends JFrame {
} }
}); });
Container contentPane = getContentPane(); Container contentPane = getContentPane();
contentPane.add(new JScrollPane(panel)); final JScrollPane jScrollPane = new JScrollPane(panel);
contentPane.addComponentListener(new ComponentAdapter() {
@Override
public void componentResized(ComponentEvent e) {
super.componentResized(e);
jScrollPane.getHorizontalScrollBar().setValue(jScrollPane.getHorizontalScrollBar().getMaximum());
jScrollPane.getHorizontalScrollBar().setValue(jScrollPane.getHorizontalScrollBar().getValue() / 2);
}
});
contentPane.add(jScrollPane);
} }
} }