private static int getTabbedPaneBaseline(JTabbedPane tp, int height) {
if (tp.getTabCount() > 0) {
if (isAqua()) {
return getAquaTabbedPaneBaseline(tp, height);
}
Insets insets = tp.getInsets();
Insets contentBorderInsets = UIManager.getInsets("TabbedPane.contentBorderInsets");
Insets tabAreaInsets =
rotateInsets(UIManager.getInsets("TabbedPane.tabAreaInsets"), tp.getTabPlacement());
FontMetrics metrics = tp.getFontMetrics(tp.getFont());
int maxHeight = getMaxTabHeight(tp);
iconRect.setBounds(0, 0, 0, 0);
textRect.setBounds(0, 0, 0, 0);
viewRect.setBounds(0, 0, Short.MAX_VALUE, maxHeight);
SwingUtilities.layoutCompoundLabel(
tp,
metrics,
"A",
null,
SwingUtilities.CENTER,
SwingUtilities.CENTER,
SwingUtilities.CENTER,
SwingUtilities.TRAILING,
viewRect,
iconRect,
textRect,
0);
int baseline = textRect.y + metrics.getAscent();
switch (tp.getTabPlacement()) {
case JTabbedPane.TOP:
baseline += insets.top + tabAreaInsets.top;
if (isWindows()) {
if (tp.getTabCount() > 1) {
baseline += 1;
} else {
baseline -= 1;
}
}
return baseline;
case JTabbedPane.BOTTOM:
baseline = tp.getHeight() - insets.bottom - tabAreaInsets.bottom - maxHeight + baseline;
if (isWindows()) {
if (tp.getTabCount() > 1) {
baseline += -1;
} else {
baseline += 1;
}
}
return baseline;
case JTabbedPane.LEFT:
case JTabbedPane.RIGHT:
if (isAqua()) {
// Aqua rotates left/right text, so that there isn't a good
// baseline.
return -1;
}
baseline += insets.top + tabAreaInsets.top;
if (isWindows()) {
baseline += (maxHeight % 2);
}
return baseline;
}
}
return -1;
}
