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ScrollBar: set valueIsAdjusting property to true while smooth scrolling animation is running (issue #50)

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This commit is contained in:
Karl Tauber
2020-08-04 21:30:44 +02:00
parent 889b5ea56a
commit 736305849a
3 changed files with 199 additions and 1 deletions
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13
flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatScrollBarUI.java
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@@ -473,6 +473,8 @@ public class FlatScrollBarUI
if( animator != null )
animator.cancel();
scrollbar.setValueIsAdjusting( true );
// if invoked while animation is running, calculation of new value
// should start at the previous target value
if( targetValue != Integer.MIN_VALUE )
@@ -487,7 +489,8 @@ public class FlatScrollBarUI
scrollbar.setValue( oldValue );
setValueAnimated( newValue );
}
} else
scrollbar.setValueIsAdjusting( false );
inRunAndSetValueAnimated = false;
}
@@ -498,6 +501,8 @@ public class FlatScrollBarUI
private int delta;
public void setValueAnimated( int value ) {
scrollbar.setValueIsAdjusting( true );
// create animator
if( animator == null ) {
int duration = FlatUIUtils.getUIInt( "ScrollPane.smoothScrolling.duration", 200 );
@@ -510,9 +515,15 @@ public class FlatScrollBarUI
return;
}
// re-enable valueIsAdjusting if disabled while animation is running
// (e.g. in mouse released listener)
if( !scrollbar.getValueIsAdjusting() )
scrollbar.setValueIsAdjusting( true );
scrollbar.setValue( targetValue - delta + Math.round( delta * fraction ) );
}, () -> {
targetValue = Integer.MIN_VALUE;
scrollbar.setValueIsAdjusting( false );
});
animator.setResolution( resolution );