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Form Editor: When designing form larger than design area scrolling the form needs to available #9239

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Form Editor: When designing form larger than design area scrolling the form needs to available #9239

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27 changes: 19 additions & 8 deletions java/form/src/org/netbeans/modules/form/HandleLayer.java
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Original file line number Diff line number Diff line change
Expand Up @@ -1231,15 +1231,26 @@ private void selectTabInUnknownTabbedPane(RADVisualComponent metacomp, Point p)
}
}
Component[] clicked = getDeepestComponentsAt(formDesigner.getComponentLayer(), p);
if (clicked != null && clicked.length > 0 && clicked[0] instanceof JTabbedPane) {
JTabbedPane tabbedPane = (JTabbedPane)clicked[0];
p = convertPointToComponent(p, tabbedPane);
for (int i=0,n=tabbedPane.getTabCount(); i < n; i++) {
Rectangle rect = tabbedPane.getBoundsAt(i);
if (rect != null && rect.contains(p)) {
tabbedPane.setSelectedIndex(i);
break;
if (clicked != null && clicked.length > 0) {
Point pointInComponent = convertPointToComponent(p, clicked[0]);
if (clicked[0] instanceof JTabbedPane tabbedPane) {
for (int i = 0, n = tabbedPane.getTabCount(); i < n; i++) {
Rectangle rect = tabbedPane.getBoundsAt(i);
if (rect != null && rect.contains(pointInComponent)) {
tabbedPane.setSelectedIndex(i);
break;
}
}
} else if (clicked[0] instanceof JScrollBar scrollbar) {
double position;
if (scrollbar.getOrientation() == JScrollBar.VERTICAL) {
double offset = scrollbar.getVisibleAmount() * (((double) scrollbar.getHeight()) / scrollbar.getMaximum());
position = ((double) pointInComponent.y - (offset / 2)) / (scrollbar.getHeight() - offset);
} else {
double offset = scrollbar.getVisibleAmount() * (((double) scrollbar.getWidth()) / scrollbar.getMaximum());
position = ((double) pointInComponent.x - (offset / 2)) / (scrollbar.getWidth() - offset);
}
scrollbar.setValue((int) (scrollbar.getMaximum() * position));
}
}
}
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