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SwingX: JXTaskPaneContainer and JXTaskPane support (#8)
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Karl Tauber
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/*
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* Copyright 2019 FormDev Software GmbH
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.formdev.flatlaf.swingx.ui;
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import static com.formdev.flatlaf.util.UIScale.scale;
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import java.awt.BasicStroke;
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import java.awt.Color;
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import java.awt.Component;
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import java.awt.Graphics;
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import java.awt.Graphics2D;
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import java.awt.Insets;
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import java.awt.Shape;
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import java.awt.geom.Path2D;
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import java.awt.geom.Rectangle2D;
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import javax.swing.JComponent;
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import javax.swing.SwingConstants;
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import javax.swing.UIManager;
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import javax.swing.border.Border;
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import javax.swing.border.CompoundBorder;
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import javax.swing.border.EmptyBorder;
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import javax.swing.plaf.ComponentUI;
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import javax.swing.plaf.UIResource;
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import org.jdesktop.swingx.JXTaskPane;
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import org.jdesktop.swingx.plaf.basic.BasicTaskPaneUI;
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import com.formdev.flatlaf.ui.FlatArrowButton;
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import com.formdev.flatlaf.ui.FlatUIUtils;
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import com.formdev.flatlaf.util.UIScale;
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/**
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* Provides the Flat LaF UI delegate for {@link org.jdesktop.swingx.JXTaskPane}.
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*
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* @author Karl Tauber
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*/
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public class FlatTaskPaneUI
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extends BasicTaskPaneUI
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{
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private Color background;
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public static ComponentUI createUI( JComponent c ) {
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return new FlatTaskPaneUI();
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}
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@Override
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protected void installDefaults() {
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if( group.getContentPane() instanceof JComponent ) {
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// remove default SwingX content border, which may be still set when switching LaF
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JComponent content = (JComponent) group.getContentPane();
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Border contentBorder = content.getBorder();
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if( contentBorder instanceof CompoundBorder &&
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((CompoundBorder)contentBorder).getOutsideBorder() instanceof BasicTaskPaneUI.ContentPaneBorder &&
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((CompoundBorder)contentBorder).getInsideBorder() instanceof EmptyBorder )
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{
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content.setBorder( null );
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}
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// set non-UIResource color to background to avoid that it is lost when switching LaF
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background = UIManager.getColor( "TaskPane.background" );
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Color bg = content.getBackground();
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if( bg == null || bg instanceof UIResource ) {
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content.setBackground( new Color( background.getRGB(), true ) );
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}
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}
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roundHeight = FlatUIUtils.getUIInt( "TaskPane.roundHeight", UIManager.getInt( "Component.arc" ) );
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super.installDefaults();
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}
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@Override
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public void uninstallUI( JComponent c ) {
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if( group.getContentPane() instanceof JComponent ) {
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// uninstall our content border, because it does not implement UIResource,
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// to alloy other LaF to install its own border
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JComponent content = (JComponent) group.getContentPane();
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if( content.getBorder() instanceof FlatContentPaneBorder )
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content.setBorder( null );
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// replace our non-UIResouce background with UIResouce background
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// to allow next LaF to overwrite it
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if( background.equals( content.getBackground() ) )
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content.setBackground( background );
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background = null;
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}
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super.uninstallUI( c );
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}
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@Override
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protected int getTitleHeight( Component c ) {
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return Math.max( super.getTitleHeight( c ), UIScale.scale( titleHeight ) );
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}
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@Override
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protected int getRoundHeight() {
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return UIScale.scale( roundHeight );
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}
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@Override
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protected Border createPaneBorder() {
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return new FlatPaneBorder();
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}
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@Override
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protected Border createContentPaneBorder() {
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return new FlatContentPaneBorder( UIManager.getColor( "TaskPane.borderColor" ),
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UIManager.getInsets( "TaskPane.contentInsets" ) );
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}
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//---- class FlatContentPaneBorder ----------------------------------------
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/**
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* The content pane border.
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*/
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private static class FlatContentPaneBorder
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extends EmptyBorder
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{
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Color color;
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FlatContentPaneBorder( Color color, Insets insets ) {
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super( insets );
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this.color = color;
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// add space for the line border
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left++;
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right++;
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bottom++;
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}
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@Override
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public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
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if( color == null )
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return;
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FlatUIUtils.setRenderingHints( (Graphics2D) g );
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g.setColor( color );
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float lineWidth = UIScale.scale( 1f );
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Path2D path = new Path2D.Float( Path2D.WIND_EVEN_ODD );
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path.append( new Rectangle2D.Float( x, y, width, height ), false );
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path.append( new Rectangle2D.Float( x + lineWidth, y, width - (lineWidth * 2), height - lineWidth ), false );
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((Graphics2D)g).fill( path );
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}
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@Override
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public Insets getBorderInsets() {
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return new Insets( scale( top ), scale( left ), scale( bottom ), scale( right ) );
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}
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@Override
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public Insets getBorderInsets( Component c, Insets insets ) {
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insets.left = scale( left );
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insets.top = scale( top );
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insets.right = scale( right );
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insets.bottom = scale( bottom );
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return insets;
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}
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}
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//---- class FlatPaneBorder -----------------------------------------------
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private class FlatPaneBorder
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extends PaneBorder
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{
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@Override
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public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
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FlatUIUtils.setRenderingHints( (Graphics2D) g );
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super.paintBorder( c, g, x, y, width, height );
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}
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@Override
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protected void paintTitleBackground( JXTaskPane group, Graphics g ) {
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int width = group.getWidth();
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int height = getTitleHeight( group ) ;
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float arc = UIScale.scale( (float) roundHeight );
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float lineWidth = UIScale.scale( 1f );
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// paint background
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g.setColor( group.isSpecial() ? specialTitleBackground : titleBackgroundGradientStart );
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((Graphics2D)g).fill( FlatUIUtils.createRoundRectanglePath( lineWidth, lineWidth,
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width - (lineWidth * 2), height - (lineWidth * 2), arc - lineWidth, arc - lineWidth, 0, 0 ) );
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// paint border
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if( borderColor != null ) {
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g.setColor( borderColor );
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((Graphics2D)g).fill( FlatUIUtils.createRoundRectangle( 0, 0, width, height, lineWidth, arc, arc, 0, 0 ) );
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}
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}
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@Override
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protected void paintExpandedControls( JXTaskPane group, Graphics g, int x, int y, int width, int height ) {
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g.setColor( getPaintColor( group ) );
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paintChevronControls( group, g, x, y, width, height );
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}
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@Override
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protected void paintChevronControls( JXTaskPane group, Graphics g, int x, int y, int width, int height ) {
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Graphics2D g2 = (Graphics2D) g;
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// scale chevron size
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float cw = scale( 6f );
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float ch = scale( 3f );
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// create arrow shape
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int direction = group.isCollapsed() ? SwingConstants.SOUTH : SwingConstants.NORTH;
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Shape arrowShape = FlatArrowButton.createArrowShape( direction, true, cw, ch );
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// fix position of controls
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x = group.getComponentOrientation().isLeftToRight() ? (group.getWidth() - width - y) : y;
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// compute chevron position
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int cx = (int) (x + width / 2 - cw / 2);
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int cy = (int) (y + (height / 2 - ch));
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float offset = ch + UIScale.scale( 1f );
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// set stroke with scaled width
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g2.setStroke( new BasicStroke( scale( 1f ) ) );
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// paint
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g2.translate( cx, cy );
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g2.draw( arrowShape );
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g2.translate( 0, offset );
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g2.draw( arrowShape );
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g2.translate( -cx, -(cy + offset) );
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}
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@Override
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protected void paintTitle( JXTaskPane group, Graphics g, Color textColor,
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int x, int y, int width, int height )
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{
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// scale title position
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int titleX = UIScale.scale( 3 );
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int titleWidth = group.getWidth() - getTitleHeight(group) - titleX;
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if( !group.getComponentOrientation().isLeftToRight() ) {
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// right-to-left
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titleX = group.getWidth() - titleX - titleWidth;
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}
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super.paintTitle( group, g, textColor, titleX, y, titleWidth, height );
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}
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@Override
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protected void paintFocus( Graphics g, Color paintColor, int x, int y, int width, int height ) {
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// scale focus rectangle
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int sx = UIScale.scale( x );
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int sy = UIScale.scale( y );
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int swidth = width - (sx - x) * 2;
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int sheight = height - (sy - y) * 2;
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super.paintFocus( g, paintColor, sx, sy, swidth, sheight );
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}
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@Override
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protected boolean isMouseOverBorder() {
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return true;
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}
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}
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}
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