下面列出了怎么用java.awt.Panel的API类实例代码及写法，或者点击链接到github查看源代码。
private void init(Component parent, String title, String message,
String buttonText) {
Panel p = new Panel();
add("Center", new Label(message));
Button btn = new Button(buttonText);
btn.addActionListener(this);
p.add(btn);
add("South", p);
pack();
Dimension dDim = getSize();
if (parent != null) {
Rectangle fRect = parent.getBounds();
setLocation(fRect.x + ((fRect.width - dDim.width) / 2),
fRect.y + ((fRect.height - dDim.height) / 2));
}
}
void createObjects() {
textArea = new TextArea( bigString() );
robot = Util.createRobot();
Panel panel = new Panel();
panel.setLayout( new GridLayout(3,3) );
for( int y=0; y<3; ++y ) {
for( int x=0; x<3; ++x ) {
if( x==1 && y==1 ) {
panel.add( textArea );
} else {
panel.add( new Panel() );
}
}
}
Frame frame = new Frame( "TextArea cursor icon test" );
frame.setSize( 300, 300 );
frame.add( panel );
frame.setVisible( true );
}
public TestDialog(Frame frame, String name) {
super(frame, name);
int scrollBoth = TextArea.SCROLLBARS_BOTH;
instructionsText = new TextArea("", 15, maxStringLength, scrollBoth);
add("North", instructionsText);
messageText = new TextArea("", 5, maxStringLength, scrollBoth);
add("Center", messageText);
buttonP = new Panel();
failB = new Button("Fail");
failB.setActionCommand("fail");
failB.addActionListener(this);
buttonP.add("Center", failB);
add("South", buttonP);
pack();
setVisible(true);
}
static float getScaleFactor() {
final Dialog dialog = new Dialog((Window) null);
dialog.setSize(100, 100);
dialog.setModal(true);
final float[] scaleFactors = new float[1];
Panel panel = new Panel() {
@Override
public void paint(Graphics g) {
float scaleFactor = 1;
if (g instanceof SunGraphics2D) {
scaleFactor = ((SunGraphics2D) g).surfaceData.getDefaultScale();
}
scaleFactors[0] = scaleFactor;
dialog.setVisible(false);
}
};
dialog.add(panel);
dialog.setVisible(true);
dialog.dispose();
return scaleFactors[0];
}
@Override
public void init() {
ta = new TextArea(4, 20);
ta.setText("01234\n56789");
ta.select(3, 9);
final TextArea instruction = new TextArea("INSTRUCTIONS:\n"
+ "The text 34567 should be selected in the TextArea.\n"
+ "If this is what you observe, then the test passes.\n"
+ "Otherwise, the test fails.", 40, 5,
TextArea.SCROLLBARS_NONE);
instruction.setEditable(false);
instruction.setPreferredSize(new Dimension(300, 70));
final Panel panel = new Panel();
panel.setLayout(new FlowLayout());
panel.add(ta);
setLayout(new BorderLayout());
add(instruction, BorderLayout.CENTER);
add(panel, BorderLayout.PAGE_END);
}
@Override
public void init() {
tf = new TextField(20);
tf.setText("0123456789");
tf.select(0, 6);
final TextArea ta = new TextArea("INSTRUCTIONS:\n"
+ "The text 012345 should be selected in the TextField.\n"
+ "If this is what you observe, then the test passes.\n"
+ "Otherwise, the test fails.", 40, 5,
TextArea.SCROLLBARS_NONE);
ta.setEditable(false);
ta.setPreferredSize(new Dimension(300, 70));
final Panel panel = new Panel();
panel.setLayout(new FlowLayout());
panel.add(tf);
setLayout(new BorderLayout());
add(ta, BorderLayout.CENTER);
add(panel, BorderLayout.PAGE_END);
}
@Test
public void testCenterComponent() {
try {
Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
Component comp = new Panel();
Component alignComp = new Panel();
comp.setBounds(0, 0, 100, 100);
UIUtils.centerComponent(comp);
assertEquals(comp.getBounds(), new Rectangle(screenSize.width / 2 - 50, screenSize.height / 2 - 50, 100, 100));
comp.setBounds(0, 0, 100, 100);
alignComp.setBounds(100, 100, 200, 200);
UIUtils.centerComponent(comp, alignComp);
assertEquals(comp.getBounds(), new Rectangle(150, 150, 100, 100));
} catch (HeadlessException e) {
warnHeadless();
}
}
void createObjects() {
textArea = new TextArea( bigString() );
robot = Util.createRobot();
Panel panel = new Panel();
panel.setLayout( new GridLayout(3,3) );
for( int y=0; y<3; ++y ) {
for( int x=0; x<3; ++x ) {
if( x==1 && y==1 ) {
panel.add( textArea );
} else {
panel.add( new Panel() );
}
}
}
Frame frame = new Frame( "TextArea cursor icon test" );
frame.setSize( 300, 300 );
frame.add( panel );
frame.setVisible( true );
}
@Override
public void init() {
ta = new TextArea(4, 20);
ta.setText("01234\n56789");
ta.select(3, 9);
final TextArea instruction = new TextArea("INSTRUCTIONS:\n"
+ "The text 34567 should be selected in the TextArea.\n"
+ "If this is what you observe, then the test passes.\n"
+ "Otherwise, the test fails.", 40, 5,
TextArea.SCROLLBARS_NONE);
instruction.setEditable(false);
instruction.setPreferredSize(new Dimension(300, 70));
final Panel panel = new Panel();
panel.setLayout(new FlowLayout());
panel.add(ta);
setLayout(new BorderLayout());
add(instruction, BorderLayout.CENTER);
add(panel, BorderLayout.PAGE_END);
}
static float getScaleFactor() {
final Dialog dialog = new Dialog((Window) null);
dialog.setSize(100, 100);
dialog.setModal(true);
final float[] scaleFactors = new float[1];
Panel panel = new Panel() {
@Override
public void paint(Graphics g) {
float scaleFactor = 1;
if (g instanceof SunGraphics2D) {
scaleFactor = getScreenScaleFactor();
}
scaleFactors[0] = scaleFactor;
dialog.setVisible(false);
}
};
dialog.add(panel);
dialog.setVisible(true);
dialog.dispose();
return scaleFactors[0];
}
static float getScaleFactor() {
final Dialog dialog = new Dialog((Window) null);
dialog.setSize(100, 100);
dialog.setModal(true);
final float[] scaleFactors = new float[1];
Panel panel = new Panel() {
@Override
public void paint(Graphics g) {
float scaleFactor = 1;
if (g instanceof SunGraphics2D) {
scaleFactor = ((SunGraphics2D) g).surfaceData.getDefaultScale();
}
scaleFactors[0] = scaleFactor;
dialog.setVisible(false);
}
};
dialog.add(panel);
dialog.setVisible(true);
dialog.dispose();
return scaleFactors[0];
}
public static void main(String[] args) {
Frame frame = new Frame();
Panel panel = new Panel();
frame.add(panel);
MouseWheelEvent event = new MouseWheelEvent(panel,
0, 0, 0, 0, 0, 0, 0, 0, false, 0, 0,
2, // wheelRotation
PRECISE_WHEEL_ROTATION); // preciseWheelRotation
MouseWheelEvent convertedEvent = (MouseWheelEvent) SwingUtilities.
convertMouseEvent(event.getComponent(), event, null);
if (convertedEvent.getPreciseWheelRotation() != PRECISE_WHEEL_ROTATION) {
throw new RuntimeException("PreciseWheelRotation field is not copied!");
}
}
private void init(Component parent, String title, String message,
String buttonText) {
Panel p = new Panel();
add("Center", new Label(message));
Button btn = new Button(buttonText);
btn.addActionListener(this);
p.add(btn);
add("South", p);
pack();
Dimension dDim = getSize();
if (parent != null) {
Rectangle fRect = parent.getBounds();
setLocation(fRect.x + ((fRect.width - dDim.width) / 2),
fRect.y + ((fRect.height - dDim.height) / 2));
}
}
void createObjects() {
textArea = new TextArea( bigString() );
robot = Util.createRobot();
Panel panel = new Panel();
panel.setLayout( new GridLayout(3,3) );
for( int y=0; y<3; ++y ) {
for( int x=0; x<3; ++x ) {
if( x==1 && y==1 ) {
panel.add( textArea );
} else {
panel.add( new Panel() );
}
}
}
Frame frame = new Frame( "TextArea cursor icon test" );
frame.setSize( 300, 300 );
frame.add( panel );
frame.setVisible( true );
}
@Override
public void init() {
ta = new TextArea(4, 20);
ta.setText("01234\n56789");
ta.select(3, 9);
final TextArea instruction = new TextArea("INSTRUCTIONS:\n"
+ "The text 34567 should be selected in the TextArea.\n"
+ "If this is what you observe, then the test passes.\n"
+ "Otherwise, the test fails.", 40, 5,
TextArea.SCROLLBARS_NONE);
instruction.setEditable(false);
instruction.setPreferredSize(new Dimension(300, 70));
final Panel panel = new Panel();
panel.setLayout(new FlowLayout());
panel.add(ta);
setLayout(new BorderLayout());
add(instruction, BorderLayout.CENTER);
add(panel, BorderLayout.PAGE_END);
}
@Override
public void init() {
tf = new TextField(20);
tf.setText("0123456789");
tf.select(0, 6);
final TextArea ta = new TextArea("INSTRUCTIONS:\n"
+ "The text 012345 should be selected in the TextField.\n"
+ "If this is what you observe, then the test passes.\n"
+ "Otherwise, the test fails.", 40, 5,
TextArea.SCROLLBARS_NONE);
ta.setEditable(false);
ta.setPreferredSize(new Dimension(300, 70));
final Panel panel = new Panel();
panel.setLayout(new FlowLayout());
panel.add(tf);
setLayout(new BorderLayout());
add(ta, BorderLayout.CENTER);
add(panel, BorderLayout.PAGE_END);
}
static float getScaleFactor() {
final Dialog dialog = new Dialog((Window) null);
dialog.setSize(100, 100);
dialog.setModal(true);
final float[] scaleFactors = new float[1];
Panel panel = new Panel() {
@Override
public void paint(Graphics g) {
float scaleFactor = 1;
if (g instanceof SunGraphics2D) {
scaleFactor = ((SunGraphics2D) g).surfaceData.getDefaultScale();
}
scaleFactors[0] = scaleFactor;
dialog.setVisible(false);
}
};
dialog.add(panel);
dialog.setVisible(true);
dialog.dispose();
return scaleFactors[0];
}
static float getScaleFactor() {
final Dialog dialog = new Dialog((Window) null);
dialog.setSize(100, 100);
dialog.setModal(true);
final float[] scaleFactors = new float[1];
Panel panel = new Panel() {
@Override
public void paint(Graphics g) {
float scaleFactor = 1;
if (g instanceof SunGraphics2D) {
scaleFactor = ((SunGraphics2D) g).surfaceData.getDefaultScale();
}
scaleFactors[0] = scaleFactor;
dialog.setVisible(false);
}
};
dialog.add(panel);
dialog.setVisible(true);
dialog.dispose();
return scaleFactors[0];
}
private void init(Component parent, String title, String message,
String buttonText) {
Panel p = new Panel();
add("Center", new Label(message));
Button btn = new Button(buttonText);
btn.addActionListener(this);
p.add(btn);
add("South", p);
pack();
Dimension dDim = getSize();
if (parent != null) {
Rectangle fRect = parent.getBounds();
setLocation(fRect.x + ((fRect.width - dDim.width) / 2),
fRect.y + ((fRect.height - dDim.height) / 2));
}
}
void createObjects() {
textArea = new TextArea( bigString() );
robot = Util.createRobot();
Panel panel = new Panel();
panel.setLayout( new GridLayout(3,3) );
for( int y=0; y<3; ++y ) {
for( int x=0; x<3; ++x ) {
if( x==1 && y==1 ) {
panel.add( textArea );
} else {
panel.add( new Panel() );
}
}
}
Frame frame = new Frame( "TextArea cursor icon test" );
frame.setSize( 300, 300 );
frame.add( panel );
frame.setVisible( true );
}
/**
* Adds the file field.
*
* @param label
* the label
* @param defaultPath
* the default path
* @param columns
* the columns
*/
public void addFileField(String label, String defaultPath, int columns) {
addStringField(label, defaultPath, columns);
if (isHeadless())
return;
TextField text = (TextField) stringField.lastElement();
GridBagLayout layout = (GridBagLayout) getLayout();
GridBagConstraints constraints = layout.getConstraints(text);
Button button = new Button("Browse...");
FileListener listener = new FileListener("Browse for " + label, text);
button.addActionListener(listener);
button.addKeyListener(this);
Panel panel = new Panel();
panel.setLayout(new FlowLayout(FlowLayout.LEFT, 0, 0));
panel.add(text);
panel.add(button);
layout.setConstraints(panel, constraints);
add(panel);
}
static float getScaleFactor() {
final Dialog dialog = new Dialog((Window) null);
dialog.setSize(100, 100);
dialog.setModal(true);
final float[] scaleFactors = new float[1];
Panel panel = new Panel() {
@Override
public void paint(Graphics g) {
float scaleFactor = 1;
if (g instanceof SunGraphics2D) {
scaleFactor = ((SunGraphics2D) g).surfaceData.getDefaultScale();
}
scaleFactors[0] = scaleFactor;
dialog.setVisible(false);
}
};
dialog.add(panel);
dialog.setVisible(true);
dialog.dispose();
return scaleFactors[0];
}
private static RowHeaderTable createRowHeaderTable(final Composite composite, final int width, final int height, final int rowHeaderWidth, final int rowHeight, final boolean iconEnable, final boolean editable) {
final Frame frame = SWT_AWT.new_Frame(composite);
final FlowLayout frameLayout = new FlowLayout();
frameLayout.setVgap(0);
frame.setLayout(frameLayout);
final Panel panel = new Panel();
final FlowLayout panelLayout = new FlowLayout();
panelLayout.setVgap(0);
panel.setLayout(panelLayout);
frame.add(panel);
final RowHeaderTable table = new RowHeaderTable(width, height, rowHeaderWidth, rowHeight, iconEnable, editable);
panel.add(table);
return table;
}
@Override
public void init() {
tf = new TextField(20);
tf.setText("0123456789");
tf.select(0, 6);
final TextArea ta = new TextArea("INSTRUCTIONS:\n"
+ "The text 012345 should be selected in the TextField.\n"
+ "If this is what you observe, then the test passes.\n"
+ "Otherwise, the test fails.", 40, 5,
TextArea.SCROLLBARS_NONE);
ta.setEditable(false);
ta.setPreferredSize(new Dimension(300, 70));
final Panel panel = new Panel();
panel.setLayout(new FlowLayout());
panel.add(tf);
setLayout(new BorderLayout());
add(ta, BorderLayout.CENTER);
add(panel, BorderLayout.PAGE_END);
}
@Override
public void init() {
tf = new TextArea(3, 20);
tf.setText("0123456789");
tf.select(0, 6);
final TextArea ta = new TextArea("INSTRUCTIONS:\n"
+ "The text 012345 should be selected in the TextArea.\n"
+ "If this is what you observe, then the test passes.\n"
+ "Otherwise, the test fails.", 40, 5,
TextArea.SCROLLBARS_NONE);
ta.setEditable(false);
ta.setPreferredSize(new Dimension(300, 70));
final Panel panel = new Panel();
panel.setLayout(new FlowLayout());
panel.add(tf);
setLayout(new BorderLayout());
add(ta, BorderLayout.CENTER);
add(panel, BorderLayout.PAGE_END);
}
public void view(){
scrollPane = new ScrollPane();
panel=new Panel();
panel.setBackground(Color.yellow);
//
JScrollPane j=new JScrollPane();
tableout.setBackground(new Color(240, 128, 128));
tableout.setPreferredSize(new Dimension(200,200));
tableout.setVisible(true);
j.setViewportView(tableout);
//
panel.add(j);
scrollPane.add(panel);
add(scrollPane);
close=false;
}
void createObjects() {
textArea = new TextArea( bigString() );
robot = Util.createRobot();
Panel panel = new Panel();
panel.setLayout( new GridLayout(3,3) );
for( int y=0; y<3; ++y ) {
for( int x=0; x<3; ++x ) {
if( x==1 && y==1 ) {
panel.add( textArea );
} else {
panel.add( new Panel() );
}
}
}
Frame frame = new Frame( "TextArea cursor icon test" );
frame.setSize( 300, 300 );
frame.add( panel );
frame.setVisible( true );
}
private void init(Component parent, String title, String message,
String buttonText) {
Panel p = new Panel();
add("Center", new Label(message));
Button btn = new Button(buttonText);
btn.addActionListener(this);
p.add(btn);
add("South", p);
pack();
Dimension dDim = getSize();
if (parent != null) {
Rectangle fRect = parent.getBounds();
setLocation(fRect.x + ((fRect.width - dDim.width) / 2),
fRect.y + ((fRect.height - dDim.height) / 2));
}
}
static float getScaleFactor() {
final Dialog dialog = new Dialog((Window) null);
dialog.setSize(100, 100);
dialog.setModal(true);
final float[] scaleFactors = new float[1];
Panel panel = new Panel() {
@Override
public void paint(Graphics g) {
float scaleFactor = 1;
if (g instanceof SunGraphics2D) {
scaleFactor = ((SunGraphics2D) g).surfaceData.getDefaultScale();
}
scaleFactors[0] = scaleFactor;
dialog.setVisible(false);
}
};
dialog.add(panel);
dialog.setVisible(true);
dialog.dispose();
return scaleFactors[0];
}
void createObjects() {
textArea = new TextArea( bigString() );
robot = Util.createRobot();
Panel panel = new Panel();
panel.setLayout( new GridLayout(3,3) );
for( int y=0; y<3; ++y ) {
for( int x=0; x<3; ++x ) {
if( x==1 && y==1 ) {
panel.add( textArea );
} else {
panel.add( new Panel() );
}
}
}
Frame frame = new Frame( "TextArea cursor icon test" );
frame.setSize( 300, 300 );
frame.add( panel );
frame.setVisible( true );
}