Java Tutorial/2D Graphics/GraphicsEnvironment
Содержание
- 1 Computes the center point of the current screen device.
- 2 Computes the maximum bounds of the current screen device. If this method is called on JDK inerama-aware results are returned.
- 3 Create an image that does not support transparency from GraphicsConfiguration
- 4 Create an image that supports arbitrary levels of transparency from GraphicsConfiguration
- 5 Create an image that supports transparent pixels from GraphicsConfiguration
- 6 Create buffered images that are compatible with the screen
- 7 Different buffer capabilities for each GraphicsConfiguration on each GraphicsDevice
- 8 Generates a table of all available display modes, enters full-screen mode and allows you to change the display mode
- 9 Get all fonts
- 10 Get the available font family names
- 11 Getting Amount of Free Accelerated Image Memory
- 12 Getting Number of Colors
- 13 Getting Refresh Rates
- 14 Getting Screen Sizes
- 15 Getting the Current Screen Refresh Rate and Number of Colors
- 16 Getting the Font Faces for a Font Family
- 17 If more than one screen is available, gets the size of each screen
- 18 List all fonts system installed
- 19 Retrieve and print the graphic device information
- 20 Setting the Screen Size, Refresh Rate, or Number of Colors
Computes the center point of the current screen device.
<source lang="java">
/*
* JCommon : a free general purpose class library for the Java(tm) platform * * * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors. * * Project Info: http://www.jfree.org/jcommon/index.html * * This library is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or * (at your option) any later version. * * This library is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public * License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA. * * [Java is a trademark or registered trademark of Sun Microsystems, Inc. * in the United States and other countries.] * * ---------------------- * RefineryUtilities.java * ---------------------- * (C) Copyright 2000-2005, by Object Refinery Limited. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): Jon Iles; * * $Id: RefineryUtilities.java,v 1.11 2007/11/02 17:50:36 taqua Exp $ * * Changes (from 26-Oct-2001) * -------------------------- * 26-Oct-2001 : Changed package to com.jrefinery.ui.*; * 26-Nov-2001 : Changed name to SwingRefinery.java to make it obvious that this is not part of * the Java APIs (DG); * 10-Dec-2001 : Changed name (again) to JRefineryUtilities.java (DG); * 28-Feb-2002 : Moved system properties classes into com.jrefinery.ui.about (DG); * 19-Apr-2002 : Renamed JRefineryUtilities-->RefineryUtilities. Added drawRotatedString() * method (DG); * 21-May-2002 : Changed frame positioning methods to accept Window parameters, as suggested by * Laurence Vanhelsuwe (DG); * 27-May-2002 : Added getPointInRectangle method (DG); * 26-Jun-2002 : Removed unnecessary imports (DG); * 12-Jul-2002 : Added workaround for rotated text (JI); * 14-Oct-2002 : Fixed errors reported by Checkstyle (DG); * 08-May-2003 : Added a new drawRotatedString() method (DG); * 09-May-2003 : Added a drawRotatedShape() method (DG); * 10-Jun-2003 : Updated aligned and rotated string methods (DG); * 29-Oct-2003 : Added workaround for font alignment in PDF output (DG); * 07-Nov-2003 : Added rotateShape() method (DG); * 16-Mar-2004 : Moved rotateShape() method to ShapeUtils.java (DG); * 07-Apr-2004 : Modified text bounds calculation with TextUtilities.getTextBounds() (DG); * 21-May-2004 : Fixed bug 951870 - precision in drawAlignedString() method (DG); * 30-Sep-2004 : Deprecated and moved a number of methods to the TextUtilities class (DG); * 04-Oct-2004 : Renamed ShapeUtils --> ShapeUtilities (DG); * 11-Jan-2005 : Removed deprecated code in preparation for the 1.0.0 release (DG); * */
import java.awt.Dimension; import java.awt.GraphicsEnvironment; import java.awt.Point; import java.awt.Rectangle; import java.awt.Toolkit; import java.lang.reflect.Method; /**
* * * @author David Gilbert */
public class Main{
/**
* Computes the center point of the current screen device. If this method is called on JDK 1.4, Xinerama-aware
* results are returned. (See Sun-Bug-ID 4463949 for details).
*
* @return the center point of the current screen.
*/
public static Point getCenterPoint ()
{
final GraphicsEnvironment localGraphicsEnvironment = GraphicsEnvironment.getLocalGraphicsEnvironment();
try
{
final Method method = GraphicsEnvironment.class.getMethod("getCenterPoint", (Class[]) null);
return (Point) method.invoke(localGraphicsEnvironment, (Object[]) null);
}
catch(Exception e)
{
// ignore ... will fail if this is not a JDK 1.4 ..
}
final Dimension s = Toolkit.getDefaultToolkit().getScreenSize();
return new Point (s.width / 2, s.height / 2);
}
/**
* Computes the maximum bounds of the current screen device. If this method is called on JDK 1.4, Xinerama-aware
* results are returned. (See Sun-Bug-ID 4463949 for details).
*
* @return the maximum bounds of the current screen.
*/
public static Rectangle getMaximumWindowBounds ()
{
final GraphicsEnvironment localGraphicsEnvironment = GraphicsEnvironment.getLocalGraphicsEnvironment();
try
{
final Method method = GraphicsEnvironment.class.getMethod("getMaximumWindowBounds", (Class[]) null);
return (Rectangle) method.invoke(localGraphicsEnvironment, (Object[]) null);
}
catch(Exception e)
{
// ignore ... will fail if this is not a JDK 1.4 ..
}
final Dimension s = Toolkit.getDefaultToolkit().getScreenSize();
return new Rectangle (0, 0, s.width, s.height);
}
}</source>
Computes the maximum bounds of the current screen device. If this method is called on JDK inerama-aware results are returned.
<source lang="java">
/*
* JCommon : a free general purpose class library for the Java(tm) platform * * * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors. * * Project Info: http://www.jfree.org/jcommon/index.html * * This library is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or * (at your option) any later version. * * This library is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public * License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA. * * [Java is a trademark or registered trademark of Sun Microsystems, Inc. * in the United States and other countries.] * * ---------------------- * RefineryUtilities.java * ---------------------- * (C) Copyright 2000-2005, by Object Refinery Limited. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): Jon Iles; * * $Id: RefineryUtilities.java,v 1.11 2007/11/02 17:50:36 taqua Exp $ * * Changes (from 26-Oct-2001) * -------------------------- * 26-Oct-2001 : Changed package to com.jrefinery.ui.*; * 26-Nov-2001 : Changed name to SwingRefinery.java to make it obvious that this is not part of * the Java APIs (DG); * 10-Dec-2001 : Changed name (again) to JRefineryUtilities.java (DG); * 28-Feb-2002 : Moved system properties classes into com.jrefinery.ui.about (DG); * 19-Apr-2002 : Renamed JRefineryUtilities-->RefineryUtilities. Added drawRotatedString() * method (DG); * 21-May-2002 : Changed frame positioning methods to accept Window parameters, as suggested by * Laurence Vanhelsuwe (DG); * 27-May-2002 : Added getPointInRectangle method (DG); * 26-Jun-2002 : Removed unnecessary imports (DG); * 12-Jul-2002 : Added workaround for rotated text (JI); * 14-Oct-2002 : Fixed errors reported by Checkstyle (DG); * 08-May-2003 : Added a new drawRotatedString() method (DG); * 09-May-2003 : Added a drawRotatedShape() method (DG); * 10-Jun-2003 : Updated aligned and rotated string methods (DG); * 29-Oct-2003 : Added workaround for font alignment in PDF output (DG); * 07-Nov-2003 : Added rotateShape() method (DG); * 16-Mar-2004 : Moved rotateShape() method to ShapeUtils.java (DG); * 07-Apr-2004 : Modified text bounds calculation with TextUtilities.getTextBounds() (DG); * 21-May-2004 : Fixed bug 951870 - precision in drawAlignedString() method (DG); * 30-Sep-2004 : Deprecated and moved a number of methods to the TextUtilities class (DG); * 04-Oct-2004 : Renamed ShapeUtils --> ShapeUtilities (DG); * 11-Jan-2005 : Removed deprecated code in preparation for the 1.0.0 release (DG); * */
import java.awt.Container; import java.awt.Dialog; import java.awt.Dimension; import java.awt.GraphicsEnvironment; import java.awt.Rectangle; import java.awt.Toolkit; import java.lang.reflect.Method; /**
* * * @author David Gilbert */
public class Main{
/**
* Positions the specified dialog at a position relative to its parent.
*
* @param dialog the dialog to be positioned.
* @param horizontalPercent the relative location.
* @param verticalPercent the relative location.
*/
public static void positionDialogRelativeToParent(final Dialog dialog,
final double horizontalPercent,
final double verticalPercent) {
final Dimension d = dialog.getSize();
final Container parent = dialog.getParent();
final Dimension p = parent.getSize();
final int baseX = parent.getX() - d.width;
final int baseY = parent.getY() - d.height;
final int w = d.width + p.width;
final int h = d.height + p.height;
int x = baseX + (int) (horizontalPercent * w);
int y = baseY + (int) (verticalPercent * h);
// make sure the dialog fits completely on the screen...
final Rectangle s = getMaximumWindowBounds();
x = Math.min(x, (s.width - d.width));
x = Math.max(x, 0);
y = Math.min(y, (s.height - d.height));
y = Math.max(y, 0);
dialog.setBounds(x + s.x, y + s.y, d.width, d.height);
}
/**
* Computes the maximum bounds of the current screen device. If this method is called on JDK 1.4, Xinerama-aware
* results are returned. (See Sun-Bug-ID 4463949 for details).
*
* @return the maximum bounds of the current screen.
*/
public static Rectangle getMaximumWindowBounds ()
{
final GraphicsEnvironment localGraphicsEnvironment = GraphicsEnvironment.getLocalGraphicsEnvironment();
try
{
final Method method = GraphicsEnvironment.class.getMethod("getMaximumWindowBounds", (Class[]) null);
return (Rectangle) method.invoke(localGraphicsEnvironment, (Object[]) null);
}
catch(Exception e)
{
// ignore ... will fail if this is not a JDK 1.4 ..
}
final Dimension s = Toolkit.getDefaultToolkit().getScreenSize();
return new Rectangle (0, 0, s.width, s.height);
}
}</source>
Create an image that does not support transparency from GraphicsConfiguration
<source lang="java">
import java.awt.GraphicsConfiguration; import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; import java.awt.Transparency; import java.awt.image.BufferedImage; public class Main {
public static void main(String[] argv) throws Exception {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice gs = ge.getDefaultScreenDevice();
GraphicsConfiguration gc = gs.getDefaultConfiguration();
BufferedImage bimage = gc.createCompatibleImage(100, 100, Transparency.OPAQUE); }
}</source>
Create an image that supports arbitrary levels of transparency from GraphicsConfiguration
<source lang="java">
import java.awt.GraphicsConfiguration; import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; import java.awt.Transparency; import java.awt.image.BufferedImage; public class Main {
public static void main(String[] argv) throws Exception {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice gs = ge.getDefaultScreenDevice();
GraphicsConfiguration gc = gs.getDefaultConfiguration();
BufferedImage bimage = gc.createCompatibleImage(100, 100, Transparency.TRANSLUCENT);
}
}</source>
Create an image that supports transparent pixels from GraphicsConfiguration
<source lang="java">
import java.awt.GraphicsConfiguration; import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; import java.awt.Transparency; import java.awt.image.BufferedImage; public class Main {
public static void main(String[] argv) throws Exception {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice gs = ge.getDefaultScreenDevice();
GraphicsConfiguration gc = gs.getDefaultConfiguration();
BufferedImage bimage = gc.createCompatibleImage(100, 100, Transparency.BITMASK);
}
}</source>
Create buffered images that are compatible with the screen
<source lang="java">
import java.awt.GraphicsConfiguration; import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; import java.awt.Transparency; import java.awt.image.BufferedImage; public class Main {
public static void main(String[] argv) throws Exception {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice gs = ge.getDefaultScreenDevice();
GraphicsConfiguration gc = gs.getDefaultConfiguration();
// Create an image that does not support transparency
BufferedImage bimage = gc.createCompatibleImage(100, 100, Transparency.OPAQUE);
}
}</source>
Different buffer capabilities for each GraphicsConfiguration on each GraphicsDevice
<source lang="java">
/*
* Copyright (c) 1995 - 2008 Sun Microsystems, Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * - Neither the name of Sun Microsystems nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
/**
* This test shows the different buffer capabilities for each * GraphicsConfiguration on each GraphicsDevice. */
import java.awt.BorderLayout; import java.awt.BufferCapabilities; import java.awt.Container; import java.awt.Dimension; import java.awt.FlowLayout; import java.awt.GraphicsConfiguration; import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; import java.awt.GridLayout; import java.awt.ImageCapabilities; import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import javax.swing.BorderFactory; import javax.swing.JCheckBox; import javax.swing.JComboBox; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; /**
* This class wraps a graphics configuration so that it can be displayed nicely * in components. */
class GCWrapper {
private GraphicsConfiguration gc;
private int index;
public GCWrapper(GraphicsConfiguration gc, int index) {
this.gc = gc;
this.index = index;
}
public GraphicsConfiguration getGC() {
return gc;
}
public String toString() {
return gc.toString();
}
} /**
* Main frame class. */
public class CapabilitiesTest extends JFrame implements ItemListener {
private JComboBox gcSelection = new JComboBox();
private JCheckBox imageAccelerated = new JCheckBox("Accelerated", false);
private JCheckBox imageTrueVolatile = new JCheckBox("Volatile", false);
private JCheckBox flipping = new JCheckBox("Flipping", false);
private JLabel flippingMethod = new JLabel("");
private JCheckBox fullScreen = new JCheckBox("Full Screen Only", false);
private JCheckBox multiBuffer = new JCheckBox("Multi-Buffering", false);
private JCheckBox fbAccelerated = new JCheckBox("Accelerated", false);
private JCheckBox fbTrueVolatile = new JCheckBox("Volatile", false);
private JCheckBox bbAccelerated = new JCheckBox("Accelerated", false);
private JCheckBox bbTrueVolatile = new JCheckBox("Volatile", false);
public CapabilitiesTest(GraphicsDevice dev) {
super(dev.getDefaultConfiguration());
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent ev) {
System.exit(0);
}
});
initComponents(getContentPane());
GraphicsConfiguration[] gcs = dev.getConfigurations();
for (int i = 0; i < gcs.length; i++) {
gcSelection.addItem(new GCWrapper(gcs[i], i));
}
gcSelection.addItemListener(this);
gcChanged();
}
/**
* Creates and lays out components in the container. See the comments below
* for an organizational overview by panel.
*/
private void initComponents(Container c) {
c.setLayout(new BorderLayout());
// Graphics Config
JPanel gcPanel = new JPanel(new FlowLayout(FlowLayout.CENTER));
c.add(gcPanel, BorderLayout.NORTH);
gcSelection.setPreferredSize(new Dimension(400, 30));
gcPanel.add(gcSelection);
// Capabilities
JPanel capsPanel = new JPanel(new BorderLayout());
c.add(capsPanel, BorderLayout.CENTER);
// Image Capabilities
JPanel imageCapsPanel = new JPanel(new GridLayout(2, 1));
capsPanel.add(imageCapsPanel, BorderLayout.NORTH);
imageCapsPanel.setBorder(BorderFactory
.createTitledBorder("Image Capabilities"));
imageAccelerated.setEnabled(false);
imageCapsPanel.add(imageAccelerated);
imageTrueVolatile.setEnabled(false);
imageCapsPanel.add(imageTrueVolatile);
// Buffer Capabilities
JPanel bufferCapsPanel = new JPanel(new BorderLayout());
capsPanel.add(bufferCapsPanel, BorderLayout.CENTER);
bufferCapsPanel.setBorder(BorderFactory
.createTitledBorder("Buffer Capabilities"));
// Buffer Access
JPanel bufferAccessCapsPanel = new JPanel(new GridLayout(3, 1));
bufferAccessCapsPanel.setPreferredSize(new Dimension(300, 88));
bufferCapsPanel.add(bufferAccessCapsPanel, BorderLayout.NORTH);
// Flipping
JPanel flippingPanel = new JPanel(new FlowLayout(FlowLayout.LEFT));
bufferAccessCapsPanel.add(flippingPanel);
flippingPanel.add(flipping);
flipping.setEnabled(false);
flippingPanel.add(flippingMethod);
// Full-screen
JPanel fsPanel = new JPanel(new FlowLayout(FlowLayout.LEFT));
bufferAccessCapsPanel.add(fsPanel);
JPanel indentPanel = new JPanel();
indentPanel.setPreferredSize(new Dimension(30, 30));
fsPanel.add(indentPanel);
fsPanel.add(fullScreen);
fullScreen.setEnabled(false);
// Multi-buffering
JPanel mbPanel = new JPanel(new FlowLayout(FlowLayout.LEFT));
bufferAccessCapsPanel.add(mbPanel);
indentPanel = new JPanel();
indentPanel.setPreferredSize(new Dimension(30, 30));
mbPanel.add(indentPanel);
mbPanel.add(multiBuffer);
multiBuffer.setEnabled(false);
// Front and Back Buffer Capabilities
JPanel buffersPanel = new JPanel(new GridLayout(1, 2));
bufferCapsPanel.add(buffersPanel, BorderLayout.CENTER);
// Front Buffer
JPanel fbPanel = new JPanel(new GridLayout(2, 1));
fbPanel.setBorder(BorderFactory.createTitledBorder("Front Buffer"));
buffersPanel.add(fbPanel);
fbPanel.add(fbAccelerated);
fbAccelerated.setEnabled(false);
fbPanel.add(fbTrueVolatile);
fbTrueVolatile.setEnabled(false);
// Back Buffer
JPanel bbPanel = new JPanel(new GridLayout(2, 1));
bbPanel.setPreferredSize(new Dimension(250, 80));
bbPanel.setBorder(BorderFactory
.createTitledBorder("Back and Intermediate Buffers"));
buffersPanel.add(bbPanel);
bbPanel.add(bbAccelerated);
bbAccelerated.setEnabled(false);
bbPanel.add(bbTrueVolatile);
bbTrueVolatile.setEnabled(false);
}
public void itemStateChanged(ItemEvent ev) {
gcChanged();
}
private void gcChanged() {
GCWrapper wrap = (GCWrapper) gcSelection.getSelectedItem();
// assert wrap != null;
GraphicsConfiguration gc = wrap.getGC();
// assert gc != null;
// Image Caps
ImageCapabilities imageCaps = gc.getImageCapabilities();
imageAccelerated.setSelected(imageCaps.isAccelerated());
imageTrueVolatile.setSelected(imageCaps.isTrueVolatile());
// Buffer Caps
BufferCapabilities bufferCaps = gc.getBufferCapabilities();
flipping.setSelected(bufferCaps.isPageFlipping());
flippingMethod.setText(getFlipText(bufferCaps.getFlipContents()));
fullScreen.setSelected(bufferCaps.isFullScreenRequired());
multiBuffer.setSelected(bufferCaps.isMultiBufferAvailable());
// Front buffer caps
imageCaps = bufferCaps.getFrontBufferCapabilities();
fbAccelerated.setSelected(imageCaps.isAccelerated());
fbTrueVolatile.setSelected(imageCaps.isTrueVolatile());
imageCaps = bufferCaps.getFrontBufferCapabilities();
// Back buffer caps
imageCaps = bufferCaps.getBackBufferCapabilities();
bbAccelerated.setSelected(imageCaps.isAccelerated());
bbTrueVolatile.setSelected(imageCaps.isTrueVolatile());
}
private static String getFlipText(BufferCapabilities.FlipContents flip) {
if (flip == null) {
return "";
} else if (flip == BufferCapabilities.FlipContents.UNDEFINED) {
return "Method Unspecified";
} else if (flip == BufferCapabilities.FlipContents.BACKGROUND) {
return "Cleared to Background";
} else if (flip == BufferCapabilities.FlipContents.PRIOR) {
return "Previous Front Buffer";
} else { // if (flip == BufferCapabilities.FlipContents.COPIED)
return "Copied";
}
}
public static void main(String[] args) {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice[] devices = ge.getScreenDevices();
for (int i = 0; i < devices.length; i++) {
CapabilitiesTest tst = new CapabilitiesTest(devices[i]);
tst.pack();
tst.setVisible(true);
}
}
}</source>
Generates a table of all available display modes, enters full-screen mode and allows you to change the display mode
<source lang="java">
/*
* Copyright (c) 1995 - 2008 Sun Microsystems, Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * - Neither the name of Sun Microsystems nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
/*
test @(#)DisplayModeTest.java 1.4 01/07/17 @bug 4189326 @summary Tests changing display mode @author martak@eng: area=FullScreen @ignore This test enters full-screen mode, if available, and should not be run as an applet or as part of the test harness. */
/**
* This test generates a table of all available display modes, enters * full-screen mode, if available, and allows you to change the display mode. * The application should look fine under each enumerated display mode. * On UNIX, only a single display mode should be available, and on Microsoft * Windows, display modes should depend on direct draw availability and the * type of graphics card. */
import java.awt.BorderLayout; import java.awt.Container; import java.awt.Dimension; import java.awt.DisplayMode; import java.awt.FlowLayout; import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.ListSelectionModel; import javax.swing.event.ListSelectionEvent; import javax.swing.event.ListSelectionListener; import javax.swing.table.DefaultTableModel; import javax.swing.table.TableColumn; class DisplayModeModel extends DefaultTableModel {
private DisplayMode[] modes;
public DisplayModeModel(DisplayMode[] modes) {
this.modes = modes;
}
public DisplayMode getDisplayMode(int r) {
return modes[r];
}
public String getColumnName(int c) {
return DisplayModeTest.COLUMN_NAMES[c];
}
public int getColumnCount() {
return DisplayModeTest.COLUMN_WIDTHS.length;
}
public boolean isCellEditable(int r, int c) {
return false;
}
public int getRowCount() {
if (modes == null) {
return 0;
}
return modes.length;
}
public Object getValueAt(int rowIndex, int colIndex) {
DisplayMode dm = modes[rowIndex];
switch (colIndex) {
case DisplayModeTest.INDEX_WIDTH:
return Integer.toString(dm.getWidth());
case DisplayModeTest.INDEX_HEIGHT:
return Integer.toString(dm.getHeight());
case DisplayModeTest.INDEX_BITDEPTH: {
int bitDepth = dm.getBitDepth();
String ret;
if (bitDepth == DisplayMode.BIT_DEPTH_MULTI) {
ret = "Multi";
} else {
ret = Integer.toString(bitDepth);
}
return ret;
}
case DisplayModeTest.INDEX_REFRESHRATE: {
int refreshRate = dm.getRefreshRate();
String ret;
if (refreshRate == DisplayMode.REFRESH_RATE_UNKNOWN) {
ret = "Unknown";
} else {
ret = Integer.toString(refreshRate);
}
return ret;
}
}
throw new ArrayIndexOutOfBoundsException("Invalid column value");
}
} public class DisplayModeTest extends JFrame implements ActionListener,
ListSelectionListener {
private boolean waiting = false;
private GraphicsDevice device;
private DisplayMode originalDM;
private JButton exit = new JButton("Exit");
private JButton changeDM = new JButton("Set Display");
private JLabel currentDM = new JLabel();
private JTable dmList = new JTable();
private JScrollPane dmPane = new JScrollPane(dmList);
private boolean isFullScreen = false;
public static final int INDEX_WIDTH = 0;
public static final int INDEX_HEIGHT = 1;
public static final int INDEX_BITDEPTH = 2;
public static final int INDEX_REFRESHRATE = 3;
public static final int[] COLUMN_WIDTHS = new int[] { 100, 100, 100, 100 };
public static final String[] COLUMN_NAMES = new String[] { "Width", "Height",
"Bit Depth", "Refresh Rate" };
public DisplayModeTest(GraphicsDevice device) {
super(device.getDefaultConfiguration());
this.device = device;
setTitle("Display Mode Test");
originalDM = device.getDisplayMode();
setDMLabel(originalDM);
setDefaultCloseOperation(EXIT_ON_CLOSE);
// Make sure a DM is always selected in the list
exit.addActionListener(this);
changeDM.addActionListener(this);
changeDM.setEnabled(device.isDisplayChangeSupported());
}
public void actionPerformed(ActionEvent ev) {
Object source = ev.getSource();
if (source == exit) {
device.setDisplayMode(originalDM);
System.exit(0);
} else { // if (source == changeDM)
int index = dmList.getSelectionModel().getAnchorSelectionIndex();
if (index >= 0) {
DisplayModeModel model = (DisplayModeModel) dmList.getModel();
DisplayMode dm = model.getDisplayMode(index);
device.setDisplayMode(dm);
setDMLabel(dm);
setSize(new Dimension(dm.getWidth(), dm.getHeight()));
validate();
}
}
}
public void valueChanged(ListSelectionEvent ev) {
changeDM.setEnabled(device.isDisplayChangeSupported());
}
private void initComponents(Container c) {
setContentPane(c);
c.setLayout(new BorderLayout());
// Current DM
JPanel currentPanel = new JPanel(new FlowLayout(FlowLayout.CENTER));
c.add(currentPanel, BorderLayout.NORTH);
JLabel current = new JLabel("Current Display Mode : ");
currentPanel.add(current);
currentPanel.add(currentDM);
// Display Modes
JPanel modesPanel = new JPanel(new GridLayout(1, 2));
c.add(modesPanel, BorderLayout.CENTER);
// List of display modes
for (int i = 0; i < COLUMN_WIDTHS.length; i++) {
TableColumn col = new TableColumn(i, COLUMN_WIDTHS[i]);
col.setIdentifier(COLUMN_NAMES[i]);
col.setHeaderValue(COLUMN_NAMES[i]);
dmList.addColumn(col);
}
dmList.getSelectionModel().setSelectionMode(
ListSelectionModel.SINGLE_SELECTION);
dmList.getSelectionModel().addListSelectionListener(this);
modesPanel.add(dmPane);
// Controls
JPanel controlsPanelA = new JPanel(new BorderLayout());
modesPanel.add(controlsPanelA);
JPanel controlsPanelB = new JPanel(new GridLayout(2, 1));
controlsPanelA.add(controlsPanelB, BorderLayout.NORTH);
// Exit
JPanel exitPanel = new JPanel(new FlowLayout(FlowLayout.CENTER));
controlsPanelB.add(exitPanel);
exitPanel.add(exit);
// Change DM
JPanel changeDMPanel = new JPanel(new FlowLayout(FlowLayout.CENTER));
controlsPanelB.add(changeDMPanel);
changeDMPanel.add(changeDM);
controlsPanelA.add(new JPanel(), BorderLayout.CENTER);
}
public void setVisible(boolean isVis) {
super.setVisible(isVis);
if (isVis) {
dmList.setModel(new DisplayModeModel(device.getDisplayModes()));
}
}
public void setDMLabel(DisplayMode newMode) {
int bitDepth = newMode.getBitDepth();
int refreshRate = newMode.getRefreshRate();
String bd, rr;
if (bitDepth == DisplayMode.BIT_DEPTH_MULTI) {
bd = "Multi";
} else {
bd = Integer.toString(bitDepth);
}
if (refreshRate == DisplayMode.REFRESH_RATE_UNKNOWN) {
rr = "Unknown";
} else {
rr = Integer.toString(refreshRate);
}
currentDM.setText(COLUMN_NAMES[INDEX_WIDTH] + ": " + newMode.getWidth()
+ " " + COLUMN_NAMES[INDEX_HEIGHT] + ": " + newMode.getHeight() + " "
+ COLUMN_NAMES[INDEX_BITDEPTH] + ": " + bd + " "
+ COLUMN_NAMES[INDEX_REFRESHRATE] + ": " + rr);
}
public void begin() {
isFullScreen = device.isFullScreenSupported();
setUndecorated(isFullScreen);
setResizable(!isFullScreen);
if (isFullScreen) {
// Full-screen mode
device.setFullScreenWindow(this);
validate();
} else {
// Windowed mode
pack();
setVisible(true);
}
}
public static void main(String[] args) {
GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice[] devices = env.getScreenDevices();
// REMIND : Multi-monitor full-screen mode not yet supported
for (int i = 0; i < 1 /* devices.length */; i++) {
DisplayModeTest test = new DisplayModeTest(devices[i]);
test.initComponents(test.getContentPane());
test.begin();
}
}
}</source>
Get all fonts
<source lang="java">
import java.awt.Font; import java.awt.GraphicsEnvironment; public class Main {
public static void main(String[] args) throws Exception {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
Font[] fonts = ge.getAllFonts();
for (int i = 0; i < fonts.length; i++) {
System.out.print(fonts[i].getFontName() + " : ");
System.out.print(fonts[i].getFamily() + " : ");
System.out.print(fonts[i].getName());
System.out.println();
}
}
}</source>
Get the available font family names
<source lang="java">
import java.awt.GraphicsEnvironment; public class Main {
public static void main(String[] args) {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
String familyNames[] = ge.getAvailableFontFamilyNames();
for (String familyName : familyNames) {
System.out.println("Family names: " + familyName);
}
}
}</source>
Getting Amount of Free Accelerated Image Memory
<source lang="java">
import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; import java.awt.image.VolatileImage; public class Main {
public static void main(String[] argv) throws Exception {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice[] gs = ge.getScreenDevices();
for (int i = 0; i < gs.length; i++) {
VolatileImage im = gs[i].getDefaultConfiguration()
.createCompatibleVolatileImage(1, 1);
int bytes = gs[i].getAvailableAcceleratedMemory();
if (bytes < 0) {
System.out.println("Amount of memory is unlimited");
}
im.flush();
}
}
}</source>
Getting Number of Colors
<source lang="java">
import java.awt.DisplayMode; import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; public class Main {
public static void main(String[] argv) throws Exception {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice gs = ge.getDefaultScreenDevice();
DisplayMode[] dmodes = gs.getDisplayModes();
for (int i = 0; i < dmodes.length; i++) {
int refreshRate = dmodes[i].getRefreshRate();
}
}
}</source>
Getting Refresh Rates
<source lang="java">
import java.awt.DisplayMode; import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; public class Main {
public static void main(String[] argv) throws Exception {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice gs = ge.getDefaultScreenDevice();
DisplayMode[] dmodes = gs.getDisplayModes();
for (int i = 0; i < dmodes.length; i++) {
int bitDepth = dmodes[i].getBitDepth();
}
}
}</source>
Getting Screen Sizes
<source lang="java">
import java.awt.DisplayMode; import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; public class Main {
public static void main(String[] argv) throws Exception {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice gs = ge.getDefaultScreenDevice();
DisplayMode[] dmodes = gs.getDisplayModes();
for (int i = 0; i < dmodes.length; i++) {
int screenWidth = dmodes[i].getWidth();
int screenHeight = dmodes[i].getHeight();
}
}
}</source>
Getting the Current Screen Refresh Rate and Number of Colors
<source lang="java">
import java.awt.DisplayMode; import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; public class Main {
public static void main(String[] argv) throws Exception {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice[] gs = ge.getScreenDevices();
for (int i = 0; i < gs.length; i++) {
DisplayMode dm = gs[i].getDisplayMode();
int refreshRate = dm.getRefreshRate();
if (refreshRate == DisplayMode.REFRESH_RATE_UNKNOWN) {
System.out.println("Unknown rate");
}
int bitDepth = dm.getBitDepth();
int numColors = (int) Math.pow(2, bitDepth);
}
}
}</source>
Getting the Font Faces for a Font Family
<source lang="java">
import java.awt.Font; import java.awt.GraphicsEnvironment; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; public class Main {
public static void main(String[] argv) throws Exception {
Map<String, List<String>> fontFaceNames = new HashMap<String, List<String>>();
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
Font[] fonts = ge.getAllFonts();
for (int i = 0; i < fonts.length; i++) {
String familyName = fonts[i].getFamily();
String faceName = fonts[i].getName();
List<String> list = fontFaceNames.get(familyName);
if (list == null) {
list = new ArrayList<String>();
fontFaceNames.put(familyName, list);
}
list.add(faceName);
}
System.out.println(fontFaceNames);
}
}</source>
If more than one screen is available, gets the size of each screen
<source lang="java">
import java.awt.DisplayMode; import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; public class Main {
public static void main(String[] argv) throws Exception {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice[] gs = ge.getScreenDevices();
for (int i = 0; i < gs.length; i++) {
DisplayMode dm = gs[i].getDisplayMode();
int screenWidth = dm.getWidth();
int screenHeight = dm.getHeight();
}
}
}</source>
List all fonts system installed
<source lang="java">
import java.awt.Font; import java.awt.GraphicsEnvironment; public class ShowFonts {
public static void main(String[] args) {
Font[] fonts;
fonts = GraphicsEnvironment.getLocalGraphicsEnvironment().getAllFonts();
for (int i = 0; i < fonts.length; i++) {
System.out.print(fonts[i].getFontName() + " : ");
System.out.print(fonts[i].getFamily() + " : ");
System.out.print(fonts[i].getName());
System.out.println();
}
}
}</source>
Retrieve and print the graphic device information
<source lang="java">
import java.awt.GraphicsConfiguration; import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; public class Main {
public static void main(String[] args) {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice[] gs = ge.getScreenDevices();
for (int j = 0; j < gs.length; j++) {
GraphicsDevice gd = gs[j];
System.out.println("Device " + j + ": " + gd);
GraphicsConfiguration[] gc = gd.getConfigurations();
for (int i = 0; i < gc.length; i++) {
System.out.println(gc[i]);
System.out.println(gc[i].getBounds());
}
}
}
}</source>
Setting the Screen Size, Refresh Rate, or Number of Colors
<source lang="java">
import java.awt.DisplayMode; import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; public class Main {
public static void main(String[] argv) throws Exception {
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice gs = ge.getDefaultScreenDevice();
boolean canChg = gs.isDisplayChangeSupported();
if (canChg) {
DisplayMode displayMode = gs.getDisplayMode();
int screenWidth = 640;
int screenHeight = 480;
int bitDepth = 8;
displayMode = new DisplayMode(screenWidth, screenHeight, bitDepth, displayMode
.getRefreshRate());
try {
gs.setDisplayMode(displayMode);
} catch (Throwable e) {
gs.setFullScreenWindow(null);
}
}
}
}</source>
