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https://github.com/JFormDesigner/FlatLaf.git
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FlatSmoothScrollingTest:
- use ChangeListener instead of AdjustmentListener because this is invoked before all other scrollbar listeners (which may run 20-30ms) and avoids a delay in the line chart - use System.nanoTime() instead of System.currentTimeMillis() for better precision - paint vertical lines in chart at every 200ms (was 1sec) - print elapsed time between scrollbar events
This commit is contained in:
Karl Tauber
@@ -23,8 +23,6 @@ import java.awt.Graphics;
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import java.awt.Graphics2D;
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import java.awt.Point;
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import java.awt.Rectangle;
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import java.awt.event.AdjustmentEvent;
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import java.awt.event.AdjustmentListener;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.HashMap;
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@@ -32,6 +30,8 @@ import java.util.List;
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import java.util.Map;
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import java.util.stream.Collectors;
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import javax.swing.*;
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import javax.swing.event.ChangeEvent;
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import javax.swing.event.ChangeListener;
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import javax.swing.table.AbstractTableModel;
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import javax.swing.tree.*;
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import com.formdev.flatlaf.ui.FlatUIUtils;
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@@ -74,23 +74,23 @@ public class FlatSmoothScrollingTest
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textPaneLabel.setIcon( new ColorIcon( Color.cyan.darker() ) );
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editorPaneLabel.setIcon( new ColorIcon( Color.orange.darker() ) );
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listScrollPane.getVerticalScrollBar().addAdjustmentListener( new AdjustmentHandler( "list vert", Color.red.darker() ) );
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listScrollPane.getHorizontalScrollBar().addAdjustmentListener( new AdjustmentHandler( "list horz", Color.red ) );
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listScrollPane.getVerticalScrollBar().getModel().addChangeListener( new ScrollBarChangeHandler( "list vert", Color.red.darker() ) );
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listScrollPane.getHorizontalScrollBar().getModel().addChangeListener( new ScrollBarChangeHandler( "list horz", Color.red ) );
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treeScrollPane.getVerticalScrollBar().addAdjustmentListener( new AdjustmentHandler( "tree vert", Color.blue.darker() ) );
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treeScrollPane.getHorizontalScrollBar().addAdjustmentListener( new AdjustmentHandler( "tree horz", Color.blue ) );
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treeScrollPane.getVerticalScrollBar().getModel().addChangeListener( new ScrollBarChangeHandler( "tree vert", Color.blue.darker() ) );
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treeScrollPane.getHorizontalScrollBar().getModel().addChangeListener( new ScrollBarChangeHandler( "tree horz", Color.blue ) );
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tableScrollPane.getVerticalScrollBar().addAdjustmentListener( new AdjustmentHandler( "table vert", Color.green.darker() ) );
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tableScrollPane.getHorizontalScrollBar().addAdjustmentListener( new AdjustmentHandler( "table horz", Color.green ) );
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tableScrollPane.getVerticalScrollBar().getModel().addChangeListener( new ScrollBarChangeHandler( "table vert", Color.green.darker() ) );
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tableScrollPane.getHorizontalScrollBar().getModel().addChangeListener( new ScrollBarChangeHandler( "table horz", Color.green ) );
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textAreaScrollPane.getVerticalScrollBar().addAdjustmentListener( new AdjustmentHandler( "textArea vert", Color.magenta.darker() ) );
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textAreaScrollPane.getHorizontalScrollBar().addAdjustmentListener( new AdjustmentHandler( "textArea horz", Color.magenta ) );
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textAreaScrollPane.getVerticalScrollBar().getModel().addChangeListener( new ScrollBarChangeHandler( "textArea vert", Color.magenta.darker() ) );
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textAreaScrollPane.getHorizontalScrollBar().getModel().addChangeListener( new ScrollBarChangeHandler( "textArea horz", Color.magenta ) );
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textPaneScrollPane.getVerticalScrollBar().addAdjustmentListener( new AdjustmentHandler( "textPane vert", Color.cyan.darker() ) );
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textPaneScrollPane.getHorizontalScrollBar().addAdjustmentListener( new AdjustmentHandler( "textPane horz", Color.cyan ) );
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textPaneScrollPane.getVerticalScrollBar().getModel().addChangeListener( new ScrollBarChangeHandler( "textPane vert", Color.cyan.darker() ) );
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textPaneScrollPane.getHorizontalScrollBar().getModel().addChangeListener( new ScrollBarChangeHandler( "textPane horz", Color.cyan ) );
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editorPaneScrollPane.getVerticalScrollBar().addAdjustmentListener( new AdjustmentHandler( "editorPane vert", Color.orange.darker() ) );
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editorPaneScrollPane.getHorizontalScrollBar().addAdjustmentListener( new AdjustmentHandler( "editorPane horz", Color.orange ) );
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editorPaneScrollPane.getVerticalScrollBar().getModel().addChangeListener( new ScrollBarChangeHandler( "editorPane vert", Color.orange.darker() ) );
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editorPaneScrollPane.getHorizontalScrollBar().getModel().addChangeListener( new ScrollBarChangeHandler( "editorPane horz", Color.orange ) );
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ArrayList<String> items = new ArrayList<>();
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for( char ch = '0'; ch < 'z'; ch++ ) {
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@@ -342,48 +342,41 @@ public class FlatSmoothScrollingTest
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private FlatSmoothScrollingTest.LineChartPanel lineChartPanel;
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// JFormDesigner - End of variables declaration //GEN-END:variables
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//---- class AdjustmentHandler --------------------------------------------
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//---- class ScrollBarChangeHandler ---------------------------------------
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private class AdjustmentHandler
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implements AdjustmentListener
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private class ScrollBarChangeHandler
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implements ChangeListener
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{
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private final String name;
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private final Color chartColor;
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private int count;
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private long lastTime;
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AdjustmentHandler( String name ) {
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this( name, null );
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}
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AdjustmentHandler( String name, Color chartColor ) {
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ScrollBarChangeHandler( String name, Color chartColor ) {
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this.name = name;
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this.chartColor = chartColor;
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}
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@Override
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public void adjustmentValueChanged( AdjustmentEvent e ) {
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public void stateChanged( ChangeEvent e ) {
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DefaultBoundedRangeModel m = (DefaultBoundedRangeModel) e.getSource();
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int value = m.getValue();
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boolean valueIsAdjusting = m.getValueIsAdjusting();
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if( chartColor != null ) {
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JScrollBar sb = (JScrollBar) e.getSource();
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double value = (double) (e.getValue() - sb.getMinimum()) / (double) (sb.getMaximum() - sb.getVisibleAmount());
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lineChartPanel.addValue( value, chartColor );
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double chartValue = (double) (value - m.getMinimum()) / (double) (m.getMaximum() - m.getExtent());
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lineChartPanel.addValue( chartValue, chartColor );
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}
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System.out.printf( "%s (%d): %s %3d %b%n",
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long t = System.nanoTime() / 1000000;
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System.out.printf( "%s (%d): %4d %3d ms %b%n",
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name, ++count,
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adjustmentType2Str( e.getAdjustmentType() ),
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e.getValue(),
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e.getValueIsAdjusting() );
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}
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value,
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t - lastTime,
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valueIsAdjusting );
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private String adjustmentType2Str( int adjustmentType ) {
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switch( adjustmentType ) {
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case AdjustmentEvent.UNIT_INCREMENT: return "UNIT_INCREMENT";
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case AdjustmentEvent.UNIT_DECREMENT: return "UNIT_DECREMENT";
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case AdjustmentEvent.BLOCK_INCREMENT: return "BLOCK_INCREMENT";
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case AdjustmentEvent.BLOCK_DECREMENT: return "BLOCK_DECREMENT";
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case AdjustmentEvent.TRACK: return "TRACK";
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default: return "unknown type";
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}
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lastTime = t;
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}
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}
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@@ -439,7 +432,7 @@ public class FlatSmoothScrollingTest
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void addValue( double value, Color chartColor ) {
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List<Data> chartData = color2dataMap.computeIfAbsent( chartColor, k -> new ArrayList<>() );
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chartData.add( new Data( value, System.currentTimeMillis()) );
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chartData.add( new Data( value, System.nanoTime() / 1000000) );
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lastUsedChartColor = chartColor;
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@@ -505,7 +498,8 @@ public class FlatSmoothScrollingTest
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// paint vertical lines
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g.setColor( Color.LIGHT_GRAY );
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for( int i = secondWidth; i < width; i += secondWidth )
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int twoHundredMillisWidth = secondWidth / 5;
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for( int i = twoHundredMillisWidth; i < width; i += twoHundredMillisWidth )
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g.drawLine( i, 0, i, height );
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// paint lines
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