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Tree: improved support for JTree.getPathForLocation(int x, int y) in wide selection (issue #373)

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this is experimental and disabled by default; enable with:
`UIManager.put( "FlatLaf.experimental.tree.widePathForLocation", true );`
This commit is contained in:
Karl Tauber
2021-08-13 00:19:34 +02:00
parent 7bc9be686f
commit 268fe15004
3 changed files with 73 additions and 1 deletions
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20
flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTreeUI.java
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@@ -230,6 +230,26 @@ public class FlatTreeUI
tree.repaint( 0, r.y, tree.getWidth(), r.height );
}
@Override
public Rectangle getPathBounds( JTree tree, TreePath path ) {
Rectangle bounds = super.getPathBounds( tree, path );
// If this method was invoked from JTree.getPathForLocation(int x, int y) to check whether
// the location is within tree node bounds, then return the bounds of a wide node.
// This changes the behavior of JTree.getPathForLocation(int x, int y) and
// JTree.getRowForLocation(int x, int y), which now return the path/row even
// if [x,y] is in the wide row area outside of the actual tree node.
if( bounds != null &&
isWideSelection() &&
UIManager.getBoolean( "FlatLaf.experimental.tree.widePathForLocation" ) &&
StackUtils.wasInvokedFrom( JTree.class.getName(), "getPathForLocation", 5 ) )
{
bounds.x = 0;
bounds.width = tree.getWidth();
}
return bounds;
}
/**
* Same as super.paintRow(), but supports wide selection and uses
* inactive selection background/foreground if tree is not focused.