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Table: fixed endless repainting if table is not focused

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This commit is contained in:
Karl Tauber
2019-09-14 22:13:44 +02:00
parent a09592cb0d
commit 76f80b6bdf
1 changed files with 45 additions and 13 deletions
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58
flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTableUI.java
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@@ -17,7 +17,8 @@
package com.formdev.flatlaf.ui;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import javax.swing.JComponent;
import javax.swing.LookAndFeel;
import javax.swing.UIManager;
@@ -39,6 +40,8 @@ import com.formdev.flatlaf.util.UIScale;
public class FlatTableUI
extends BasicTableUI
{
protected Color selectionBackground;
protected Color selectionForeground;
protected Color selectionInactiveBackground;
protected Color selectionInactiveForeground;
@@ -50,9 +53,13 @@ public class FlatTableUI
protected void installDefaults() {
super.installDefaults();
selectionBackground = UIManager.getColor( "Table.selectionBackground" );
selectionForeground = UIManager.getColor( "Table.selectionForeground" );
selectionInactiveBackground = UIManager.getColor( "Table.selectionInactiveBackground" );
selectionInactiveForeground = UIManager.getColor( "Table.selectionInactiveForeground" );
toggleSelectionColors( table.hasFocus() );
int rowHeight = FlatUIUtils.getUIInt( "Table.rowHeight", 16 );
if( rowHeight > 0 )
LookAndFeel.installProperty( table, "rowHeight", UIScale.scale( rowHeight ) );
@@ -62,24 +69,49 @@ public class FlatTableUI
protected void uninstallDefaults() {
super.uninstallDefaults();
selectionBackground = null;
selectionForeground = null;
selectionInactiveBackground = null;
selectionInactiveForeground = null;
}
@Override
public void paint( Graphics g, JComponent c ) {
if( !table.hasFocus() ) {
// apply inactive selection background/foreground if table is not focused
Color oldSelectionBackground = table.getSelectionBackground();
Color oldSelectionForeground = table.getSelectionForeground();
table.setSelectionBackground( selectionInactiveBackground );
table.setSelectionForeground( selectionInactiveForeground );
protected FocusListener createFocusListener() {
return new BasicTableUI.FocusHandler() {
@Override
public void focusGained( FocusEvent e ) {
super.focusGained( e );
toggleSelectionColors( true );
}
super.paint( g, c );
@Override
public void focusLost( FocusEvent e ) {
super.focusLost( e );
toggleSelectionColors( false );
}
};
}
table.setSelectionBackground( oldSelectionBackground );
table.setSelectionForeground( oldSelectionForeground );
} else
super.paint( g, c );
/**
* Toggle selection colors from focused to inactive and vice versa.
*
* This is not a optimal solution but much easier than rewriting the whole paint methods.
*
* Using a LaF specific renderer was avoided because often a custom renderer is
* already used in applications. Then either the inactive colors are not used,
* or the application has to be changed to extend a FlatLaf renderer.
*/
private void toggleSelectionColors( boolean focused ) {
if( focused ) {
if( table.getSelectionBackground() == selectionInactiveBackground )
table.setSelectionBackground( selectionBackground );
if( table.getSelectionForeground() == selectionInactiveForeground )
table.setSelectionForeground( selectionForeground );
} else {
if( table.getSelectionBackground() == selectionBackground )
table.setSelectionBackground( selectionInactiveBackground );
if( table.getSelectionForeground() == selectionForeground )
table.setSelectionForeground( selectionInactiveForeground );
}
}
}