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SmoothScrollingTest added (from #683 (comment))
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@DevCharly
DevCharly committed Aug 25, 2023
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305 changes: 305 additions & 0 deletions flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/contrib/SmoothScrollingTest.java
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package com.formdev.flatlaf.testing.contrib;

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.event.ItemEvent;

import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLayeredPane;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.JRootPane;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTree;
import javax.swing.JViewport;
import javax.swing.ListCellRenderer;
import javax.swing.Scrollable;
import javax.swing.SwingConstants;
import javax.swing.SwingUtilities;
import javax.swing.ToolTipManager;
import javax.swing.UIManager;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableModel;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.TreeModel;

import com.formdev.flatlaf.FlatClientProperties;
import com.formdev.flatlaf.FlatLightLaf;

/**
* from https://github.com/JFormDesigner/FlatLaf/pull/683#issuecomment-1585667066
*
* @author Chrriis
*/
public class SmoothScrollingTest {

private static class CustomTree extends JTree {

public CustomTree() {
super(getDefaultTreeModel());
}

protected static TreeModel getDefaultTreeModel() {
DefaultMutableTreeNode root = new DefaultMutableTreeNode("JTree");
for(int i=0; i<1000; i++) {
DefaultMutableTreeNode parent;
parent = new DefaultMutableTreeNode("colors-" + i);
root.add(parent);
parent.add(new DefaultMutableTreeNode("blue"));
parent.add(new DefaultMutableTreeNode("violet"));
parent.add(new DefaultMutableTreeNode("red"));
parent.add(new DefaultMutableTreeNode("yellow"));
parent = new DefaultMutableTreeNode("sports-" + i);
root.add(parent);
parent.add(new DefaultMutableTreeNode("basketball"));
parent.add(new DefaultMutableTreeNode("soccer"));
parent.add(new DefaultMutableTreeNode("football"));
parent.add(new DefaultMutableTreeNode("hockey"));
parent = new DefaultMutableTreeNode("food-" + i);
root.add(parent);
parent.add(new DefaultMutableTreeNode("hot dogs"));
parent.add(new DefaultMutableTreeNode("pizza"));
parent.add(new DefaultMutableTreeNode("ravioli"));
parent.add(new DefaultMutableTreeNode("bananas"));
}
return new DefaultTreeModel(root);
}
}

private static class CustomTable extends JTable {
public CustomTable() {
super(createDefaultTableModel());
setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
setCellSelectionEnabled(true);
}
private static TableModel createDefaultTableModel() {
int columnChunkCount = 90;
Object[][] data = new Object[1000][3 * columnChunkCount];
String[] prefixes = {"", " ", " ", " "};
String[] titles = new String[columnChunkCount * 3];
for(int j=0; j<columnChunkCount; j++) {
titles[j * 3] = "Column" + j * 3 + 1;
titles[j * 3 + 1] = "Column" + j * 3 + 2;
titles[j * 3 + 2] = "Column" + j * 3 + 3;
for(int i=0; i<data.length; i++) {
data[i][j * 3] = (prefixes[i % prefixes.length]) + "Cell " + (i + 1) + "/" + (j + 1);
data[i][j * 3 + 1] = "Cell " + (i + 1) + "/" + (j + 2);
data[i][j * 3 + 2] = Boolean.valueOf(i%5 == 0);
}
}
AbstractTableModel tableModel = new AbstractTableModel() {
@Override
public Object getValueAt(int rowIndex, int columnIndex) {
return data[rowIndex][columnIndex];
}
@Override
public int getRowCount() {
return data.length;
}
@Override
public int getColumnCount() {
return titles.length;
}
@Override
public String getColumnName(int column) {
return titles[column];
}
@Override
public Class<?> getColumnClass(int columnIndex) {
return columnIndex % 3 == 2 ? Boolean.class : String.class;
}
};
return tableModel;
}
}

private static class ScrollableCustomPane extends JPanel implements Scrollable {
public ScrollableCustomPane() {
super(new GridLayout(100, 0));
for(int i=0; i<10000; i++) {
add(new JButton("Button " + (i + 1)));
}
}
@Override
public Dimension getPreferredScrollableViewportSize() {
return getPreferredSize();
}
@Override
public boolean getScrollableTracksViewportWidth() {
return false;
}
@Override
public boolean getScrollableTracksViewportHeight() {
return false;
}
@Override
public int getScrollableUnitIncrement(Rectangle visibleRect, int orientation, int direction) {
Dimension referenceSize = getComponent(0).getSize();
switch(orientation) {
case SwingConstants.VERTICAL: return referenceSize.height;
case SwingConstants.HORIZONTAL: return referenceSize.width;
}
return 20;
}
@Override
public int getScrollableBlockIncrement(Rectangle visibleRect, int orientation, int direction) {
Dimension referenceSize = getComponent(0).getSize();
switch(orientation) {
case SwingConstants.VERTICAL: return referenceSize.height * 10;
case SwingConstants.HORIZONTAL: return referenceSize.width * 5;
}
return 100;
}
}

public static void main(String[] args) throws Exception {
UIManager.setLookAndFeel(new FlatLightLaf());
// UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
UIManager.getDefaults().put("ScrollBar.showButtons", true);
ToolTipManager.sharedInstance().setDismissDelay(Integer.MAX_VALUE);
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel contentPane = new JPanel(new BorderLayout());
contentPane.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
JCheckBox smoothCheckBox = new JCheckBox("Smooth", true);
JComboBox<Integer> scrollModeComboBox = new JComboBox<>(new Integer[] {JViewport.BLIT_SCROLL_MODE, JViewport.BACKINGSTORE_SCROLL_MODE, JViewport.SIMPLE_SCROLL_MODE});
JCheckBox blitBlockCheckBox = new JCheckBox("Prevent Blit");
@SuppressWarnings( "rawtypes" )
ListCellRenderer defaultComboRenderer = scrollModeComboBox.getRenderer();
scrollModeComboBox.setRenderer(new ListCellRenderer<Integer>() {
@SuppressWarnings( "unchecked" )
@Override
public Component getListCellRendererComponent(JList<? extends Integer> list, Integer value, int index, boolean isSelected, boolean cellHasFocus) {
String sValue = null;
switch(value) {
case JViewport.BLIT_SCROLL_MODE: sValue = "Blit"; break;
case JViewport.BACKINGSTORE_SCROLL_MODE: sValue = "Backing Store"; break;
case JViewport.SIMPLE_SCROLL_MODE: sValue = "Simple"; break;
}
return defaultComboRenderer.getListCellRendererComponent(list, sValue, index, isSelected, cellHasFocus);
}
});
JPanel northBar = new JPanel();
JButton lightPopupButton = new JButton("Light Popup");
lightPopupButton.addActionListener(e -> {
JPopupMenu popupMenu = new JPopupMenu();
popupMenu.setLightWeightPopupEnabled(true);
popupMenu.putClientProperty(FlatClientProperties.POPUP_BORDER_CORNER_RADIUS, 0);
JTable table = new CustomTable();
table.setColumnSelectionInterval(1, 1);
table.setRowSelectionInterval(28, 28);
JScrollPane tableScrollPane = new JScrollPane(table);
tableScrollPane.setPreferredSize(new Dimension(400, 600));
tableScrollPane.putClientProperty(FlatClientProperties.SCROLL_PANE_SMOOTH_SCROLLING, !smoothCheckBox.isSelected()? Boolean.FALSE: null);
tableScrollPane.getViewport().setScrollMode((Integer)scrollModeComboBox.getSelectedItem());
JRootPane popupRootPane = new JRootPane();
popupRootPane.getContentPane().add(tableScrollPane);
popupMenu.add(popupRootPane);
popupMenu.show(lightPopupButton, 0, lightPopupButton.getHeight());
});
northBar.add(lightPopupButton);
JButton heavyPopupButton = new JButton("Heavy Popup");
heavyPopupButton.addActionListener(e -> {
JPopupMenu popupMenu = new JPopupMenu();
popupMenu.setLightWeightPopupEnabled(false);
JTable table = new CustomTable();
table.setColumnSelectionInterval(1, 1);
table.setRowSelectionInterval(28, 28);
JScrollPane tableScrollPane = new JScrollPane(table);
tableScrollPane.setPreferredSize(new Dimension(400, 600));
tableScrollPane.putClientProperty(FlatClientProperties.SCROLL_PANE_SMOOTH_SCROLLING, !smoothCheckBox.isSelected()? Boolean.FALSE: null);
tableScrollPane.getViewport().setScrollMode((Integer)scrollModeComboBox.getSelectedItem());
JRootPane popupRootPane = new JRootPane();
popupRootPane.getContentPane().add(tableScrollPane);
popupMenu.add(popupRootPane);
popupMenu.show(heavyPopupButton, 0, heavyPopupButton.getHeight());
});
northBar.add(heavyPopupButton);
contentPane.add(northBar, BorderLayout.NORTH);
JPanel centerPane = new JPanel(new GridLayout(1, 0));
JTree tree = new CustomTree();
JScrollPane treeScrollPane = new JScrollPane(tree);
centerPane.add(treeScrollPane);
for(int i=tree.getRowCount()-1; i>=0; i--) {
tree.expandRow(i);
}
tree.setSelectionRow(28);
JTable table = new CustomTable();
table.setColumnSelectionInterval(1, 1);
table.setRowSelectionInterval(28, 28);
JScrollPane tableScrollPane = new JScrollPane(table);
centerPane.add(tableScrollPane);
ScrollableCustomPane scrollableCustomPane = new ScrollableCustomPane();
JScrollPane customPaneScrollPane = new JScrollPane(scrollableCustomPane);
centerPane.add(customPaneScrollPane);
contentPane.add(centerPane, BorderLayout.CENTER);
JPanel southBar = new JPanel(new FlowLayout());
smoothCheckBox.addItemListener(e -> {
boolean isSmooth = e.getStateChange() == ItemEvent.SELECTED;
treeScrollPane.putClientProperty(FlatClientProperties.SCROLL_PANE_SMOOTH_SCROLLING, !isSmooth? Boolean.FALSE: null);
tableScrollPane.putClientProperty(FlatClientProperties.SCROLL_PANE_SMOOTH_SCROLLING, !isSmooth? Boolean.FALSE: null);
customPaneScrollPane.putClientProperty(FlatClientProperties.SCROLL_PANE_SMOOTH_SCROLLING, !isSmooth? Boolean.FALSE: null);
});
southBar.add(smoothCheckBox);
southBar.add(Box.createHorizontalStrut(30));
JButton scrollButton = new JButton("Scroll rect");
scrollButton.addActionListener(e -> {
treeScrollPane.getViewport().setViewPosition(new Point(9, Integer.MAX_VALUE / 2));
tableScrollPane.getViewport().setViewPosition(new Point(9, Integer.MAX_VALUE / 2));
customPaneScrollPane.getViewport().setViewPosition(new Point(9, Integer.MAX_VALUE / 2));
});
southBar.add(scrollButton);
southBar.add(Box.createHorizontalStrut(30));
scrollModeComboBox.addItemListener(e -> {
SwingUtilities.invokeLater(() -> {
int scrollMode = (Integer)scrollModeComboBox.getSelectedItem();
treeScrollPane.getViewport().setScrollMode(scrollMode);
tableScrollPane.getViewport().setScrollMode(scrollMode);
customPaneScrollPane.getViewport().setScrollMode(scrollMode);
});
});
southBar.add(scrollModeComboBox);
southBar.add(Box.createHorizontalStrut(30));
JButton xButton1 = new JButton("Blit Blocker");
xButton1.setBounds(20, 400, xButton1.getPreferredSize().width, xButton1.getPreferredSize().height);
JButton xButton2 = new JButton("Blit Blocker");
xButton2.setBounds(600, 400, xButton2.getPreferredSize().width, xButton2.getPreferredSize().height);
JButton xButton3 = new JButton("Blit Blocker");
xButton3.setBounds(800, 400, xButton3.getPreferredSize().width, xButton3.getPreferredSize().height);
blitBlockCheckBox.addItemListener(e -> {
boolean isBlockingBlit = e.getStateChange() == ItemEvent.SELECTED;
JLayeredPane layeredPane = frame.getLayeredPane();
if(isBlockingBlit) {
layeredPane.add(xButton1);
layeredPane.add(xButton2);
layeredPane.add(xButton3);
} else {
layeredPane.remove(xButton1);
layeredPane.remove(xButton2);
layeredPane.remove(xButton3);
}
layeredPane.revalidate();
layeredPane.repaint();
});
southBar.add(blitBlockCheckBox);
contentPane.add(southBar, BorderLayout.SOUTH);
frame.getContentPane().add(contentPane);
frame.setSize(1200, 800);
frame.setLocationByPlatform(true);
frame.setVisible(true);
}

}

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