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'databene commons' is an open source Java library by Volker Bergmann.
It provides extensions to the Java core library by utility classes, abstract concepts
and concrete implementations.
/*
* Copyright (C) 2004-2015 Volker Bergmann ([email protected]).
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.databene.commons.ui.swing;
import javax.swing.*;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableRowSorter;
import org.databene.commons.BeanUtil;
import java.awt.*;
import java.awt.geom.Rectangle2D;
/**
* Provides Swing utilities.
* Created: 23.04.2007 22:41:21
*
* @since 0.5.13
* @author Volker Bergmann
*/
public class SwingUtil {
public static void repaintLater(final Component component) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
component.repaint();
}
});
}
public static void center(Component component) {
Dimension screenSize = getScreenSize();
int x = (screenSize.width - component.getWidth()) / 2;
int y = (screenSize.height - component.getHeight()) / 2;
component.setLocation(x, y);
}
public static Dimension getScreenSize() {
return Toolkit.getDefaultToolkit().getScreenSize();
}
public static T showInModalDialog(T mainComponent, String title, boolean cancellable,
Component parentComponent) {
return SimpleDialog.showModalDialog(mainComponent, title, cancellable, parentComponent);
}
public static void showInFrame(Component component, String title) {
JFrame frame = new JFrame(title);
frame.getContentPane().add(component, BorderLayout.CENTER);
frame.pack();
center(frame);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
public static Rectangle fitRectangles(Dimension imageSize, Dimension size) {
double aspectX = (double) size.width / imageSize.width;
double aspectY = (double) size.height / imageSize.height;
double aspect = Math.min(aspectX, aspectY);
int paintedWidth = (int) (imageSize.width * aspect);
int paintedHeight = (int) (imageSize.height * aspect);
int x = (size.width - paintedWidth) / 2;
int y = (size.height - paintedHeight) / 2;
return new Rectangle(x, y, paintedWidth, paintedHeight);
}
public static boolean isLookAndFeelNative() {
return UIManager.getSystemLookAndFeelClassName().equals(UIManager.getLookAndFeel().getClass().getName());
}
public static Window getWindowForComponent(Component parentComponent) {
if (parentComponent == null)
return null;
if (parentComponent instanceof Frame || parentComponent instanceof Dialog)
return (Window) parentComponent;
return getWindowForComponent(parentComponent.getParent());
}
public static void equalizeButtonSizes(Graphics g, JButton... buttons) {
String[] labels = BeanUtil.extractProperties(buttons, "text", String.class);
// Get the largest width and height
Dimension maxSize = new Dimension(0, 0);
Rectangle2D textBounds = null;
JButton button0 = buttons[0];
FontMetrics metrics = button0.getFontMetrics(button0.getFont());
for (int i = 0; i < labels.length; ++i) {
textBounds = metrics.getStringBounds(labels[i], g);
maxSize.width = Math.max(maxSize.width, (int) textBounds.getWidth());
maxSize.height = Math.max(maxSize.height, (int) textBounds.getHeight());
}
Insets insets = button0.getBorder().getBorderInsets(button0);
maxSize.width += insets.left + insets.right;
maxSize.height += insets.top + insets.bottom;
// reset preferred and maximum size since BoxLayout takes both into account
for (JButton button : buttons) {
button.setPreferredSize((Dimension) maxSize.clone());
button.setMaximumSize((Dimension) maxSize.clone());
}
}
public static JButton createTransparentButton(Action action, boolean withText) {
JButton button = new JButton(action);
if (withText) {
button.setVerticalTextPosition(SwingConstants.BOTTOM);
button.setHorizontalTextPosition(SwingConstants.CENTER);
} else {
button.setText("");
button.setMargin(new Insets(0, 0, 0, 0));
}
button.setOpaque(false);
button.setContentAreaFilled(false);
button.setBorderPainted(false);
return button;
}
public static Color getUIPanelBackground() {
return getUIColor("Panel.background");
}
public static Color getUIColor(String code) {
Color color = UIManager.getColor(code);
// workaround for issue with com.apple.laf.AquaNativeResources$CColorPaintUIResource which seems to be rendered with alpha=0
return new Color(color.getRed(), color.getGreen(), color.getBlue(), color.getAlpha());
}
public static Color semiTransparentColor(Color color) {
return applyAlpha(color, 128);
}
public static Color applyAlpha(Color color, int alpha) {
return new Color(color.getRed(), color.getGreen(), color.getBlue(), alpha);
}
public static void bindKeyToAction(int keyCode, int modifiers, Action action, JComponent component) {
bindKeyToAction(keyCode, modifiers, action, component, JComponent.WHEN_FOCUSED);
}
public static void bindKeyToAction(int keyCode, int modifiers, Action action, JComponent component, int condition) {
KeyStroke keyStroke = KeyStroke.getKeyStroke(keyCode, modifiers);
component.getInputMap(condition).put(keyStroke, action);
}
public static void autoSizeTableColumns(JTable table) {
for (int column = 0; column < table.getColumnCount(); column++) {
int columnWidth = 0;
for (int row = 0; row < table.getRowCount(); row++) {
TableCellRenderer renderer = table.getCellRenderer(row, column);
Component comp = table.prepareRenderer(renderer, row, column);
columnWidth = Math.max(comp.getPreferredSize().width, columnWidth);
}
table.getColumnModel().getColumn(column).setPreferredWidth(columnWidth);
}
}
public static void applyRowSorter(JTable table) {
@SuppressWarnings({ "rawtypes", "unchecked" })
TableRowSorter sorter = new TableRowSorter(table.getModel());
sorter.setSortsOnUpdates(true);
table.setRowSorter(sorter);
}
public static void scrollToTableCell(JTable table, int rowIndex, int colIndex) {
if (!(table.getParent() instanceof JViewport))
return;
JViewport viewport = (JViewport) table.getParent();
Rectangle rect = table.getCellRect(rowIndex, colIndex, true);
Point p = viewport.getViewPosition();
rect.setLocation(rect.x - p.x, rect.y - p.y);
table.scrollRectToVisible(rect);
}
}