Sit the info panel's link in the viewport's corner

It overlapped the scroll bar; the viewport is what the scroll bars have
already been taken out of. The layered pane also has to report a size now,
or the split pane above it has nothing to size the panel from.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

ts3-client/swing/src/main/java/com/ts3client/ui/InfoPanel.java

@@ -16,7 +16,7 @@ import javax.swing.JScrollPane;
 import java.awt.BorderLayout;
 import java.awt.Cursor;
 import java.awt.Dimension;
-import java.awt.Insets;
+import java.awt.Rectangle;
 import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;
 import java.io.File;
@@ -41,9 +41,6 @@ public final class InfoPanel extends JPanel {
         void setPanelHidden(boolean hidden);
     }
 
-    /** Gap between the floating link and the panel's edges. */
-    private static final int TOGGLE_MARGIN = 6;
-
     private final JEditorPane pane = HtmlStyles.pane("font-family:sans-serif; font-size:11px;");
     private final JScrollPane scroll = new JScrollPane(pane);
     /** Floats over the bottom-right corner of the details, out of the text's way. */
@@ -83,10 +80,25 @@ public final class InfoPanel extends JPanel {
             @Override
             public void doLayout() {
                 scroll.setBounds(0, 0, getWidth(), getHeight());
-                Insets in = scroll.getInsets();
+                // Lay the scroll pane out first: the link goes in the corner of the
+                // viewport, which is where the scroll bars have already been taken out.
+                scroll.doLayout();
+                Rectangle view = scroll.getViewport().getBounds();
                 Dimension d = toggle.getPreferredSize();
-                toggle.setBounds(getWidth() - in.right - TOGGLE_MARGIN - d.width,
-                        getHeight() - in.bottom - TOGGLE_MARGIN - d.height, d.width, d.height);
+                toggle.setBounds(view.x + view.width - d.width, view.y + view.height - d.height,
+                        d.width, d.height);
+            }
+
+            // Without a layout manager we have no size of our own, and the split pane
+            // above us sizes the panel from it.
+            @Override
+            public Dimension getPreferredSize() {
+                return scroll.getPreferredSize();
+            }
+
+            @Override
+            public Dimension getMinimumSize() {
+                return scroll.getMinimumSize();
             }
         };
         layers.add(scroll, JLayeredPane.DEFAULT_LAYER);