下面列出了javax.swing.SwingConstants#SOUTH 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
public Cursor getCursor() {
switch (position) {
case SwingConstants.NORTH:
return Cursor.getPredefinedCursor(Cursor.N_RESIZE_CURSOR);
case SwingConstants.SOUTH:
return Cursor.getPredefinedCursor(Cursor.S_RESIZE_CURSOR);
case SwingConstants.EAST:
return Cursor.getPredefinedCursor(Cursor.E_RESIZE_CURSOR);
case SwingConstants.WEST:
return Cursor.getPredefinedCursor(Cursor.W_RESIZE_CURSOR);
case SwingConstants.NORTH_EAST:
return Cursor.getPredefinedCursor(Cursor.NE_RESIZE_CURSOR);
case SwingConstants.SOUTH_EAST:
return Cursor.getPredefinedCursor(Cursor.SE_RESIZE_CURSOR);
case SwingConstants.NORTH_WEST:
return Cursor.getPredefinedCursor(Cursor.NW_RESIZE_CURSOR);
case SwingConstants.SOUTH_WEST:
return Cursor.getPredefinedCursor(Cursor.SW_RESIZE_CURSOR);
}
return Cursor.getDefaultCursor();
}
@Override
protected void run(Context context) throws Exception {
Random random = context.container().random();
int actionIndex = random.nextInt(4);
boolean select = random.nextBoolean();
int direction;
switch (actionIndex) {
case 0:
direction = SwingConstants.WEST;
break;
case 1:
direction = SwingConstants.EAST;
break;
case 2:
direction = SwingConstants.NORTH;
break;
case 3:
direction = SwingConstants.SOUTH;
break;
default:
throw new IllegalStateException("Invalid actionIndex=" + actionIndex); // NOI18N
}
moveOrSelect(context, direction, select);
}
/**
* Convert the orientation of the pane into compass points based on the pane
* orientation and the left-right orientation of the containter.
*
* @param isLeft {@code true} if the component's container is laid out
* left-to-right, otherwise {@code false}.
*
* @return the compass direction for increasing the divider.
*/
private int mapDirection(boolean isLeft) {
if (isLeft) {
if (splitPane.getOrientation() == JSplitPane.HORIZONTAL_SPLIT) {
return SwingConstants.WEST;
}
return SwingConstants.NORTH;
}
if (splitPane.getOrientation() == JSplitPane.HORIZONTAL_SPLIT) {
return SwingConstants.EAST;
}
return SwingConstants.SOUTH;
}
public AxisComponent(ChartComponent chart, AxisMarksComputer marksComputer,
AxisMarksPainter marksPainter, int location, int mesh) {
this.location = location;
horizontal = location == SwingConstants.NORTH ||
location == SwingConstants.SOUTH;
this.chart = chart;
this.marksComputer = marksComputer;
this.marksPainter = marksPainter;
setOpaque(false);
chart.addConfigurationListener(new ChartListener());
if (mesh == MESH_BACKGROUND) chart.addPreDecorator(createMeshPainter());
else if (mesh == MESH_FOREGROUND) chart.addPostDecorator(createMeshPainter());
}
private static void drawColors(Color[] colors, Graphics g, int x1, int y1,
int x2, int y2, int direction) {
for (int a = 0; a < colors.length; a++) {
g.setColor(colors[colors.length - a - 1]);
if (direction == SwingConstants.SOUTH) {
g.drawLine(x1, y1 - a, x2, y2 - a);
} else if (direction == SwingConstants.NORTH) {
g.drawLine(x1, y1 + a, x2, y2 + a);
} else if (direction == SwingConstants.EAST) {
g.drawLine(x1 - a, y1, x2 - a, y2);
} else if (direction == SwingConstants.WEST) {
g.drawLine(x1 + a, y1, x2 + a, y2);
}
}
}
private static boolean isBasis(int constraint) {
if (constraint == SwingConstants.NORTH) return true;
if (constraint == SwingConstants.WEST) return true;
if (constraint == SwingConstants.SOUTH) return true;
if (constraint == SwingConstants.EAST) return true;
if (constraint == SwingConstants.CENTER) return true;
return false;
}
@Override
protected JButton createArrowButton() {
return new FlatArrowButton( SwingConstants.SOUTH, arrowType, buttonArrowColor,
buttonDisabledArrowColor, buttonHoverArrowColor, null )
{
@Override
protected boolean isHover() {
return super.isHover() || (!comboBox.isEditable() ? hover : false);
}
};
}
private static void checkSupported(int constraint) {
if (constraint == SwingConstants.NORTH) return;
if (constraint == SwingConstants.WEST) return;
if (constraint == SwingConstants.SOUTH) return;
if (constraint == SwingConstants.EAST) return;
if (constraint == SwingConstants.NORTH_WEST) return;
if (constraint == SwingConstants.NORTH_EAST) return;
if (constraint == SwingConstants.SOUTH_WEST) return;
if (constraint == SwingConstants.SOUTH_EAST) return;
if (constraint == SwingConstants.CENTER) return;
throw new IllegalArgumentException("Unsupported constraint: " + constraint); // NOI18N
}
private static String constraintName(int constraint) {
if (constraint == SwingConstants.NORTH) return "NORTH"; // NOI18N
if (constraint == SwingConstants.WEST) return "WEST"; // NOI18N
if (constraint == SwingConstants.SOUTH) return "SOUTH"; // NOI18N
if (constraint == SwingConstants.EAST) return "EAST"; // NOI18N
if (constraint == SwingConstants.NORTH_WEST) return "NORTH_WEST"; // NOI18N
if (constraint == SwingConstants.NORTH_EAST) return "NORTH_EAST"; // NOI18N
if (constraint == SwingConstants.SOUTH_WEST) return "SOUTH_WEST"; // NOI18N
if (constraint == SwingConstants.SOUTH_EAST) return "SOUTH_EAST"; // NOI18N
if (constraint == SwingConstants.CENTER) return "CENTER"; // NOI18N
return "UNSUPPORTED_CONSTRAINT (value=" + constraint + ")"; // NOI18N
}
private Rectangle getRectangle(int x, int y, int w, int h, int location) {
switch (location) {
case SwingConstants.NORTH:
return new Rectangle(x + w / 2 - dist / 2, y, dist, dist);
case SwingConstants.SOUTH:
return new Rectangle(x + w / 2 - dist / 2, y + h - dist, dist, dist);
case SwingConstants.WEST:
return new Rectangle(x, y + h / 2 - dist / 2, dist, dist);
case SwingConstants.EAST:
return new Rectangle(x + w - dist, y + h / 2 - dist / 2, dist, dist);
case SwingConstants.NORTH_WEST:
return new Rectangle(x, y, dist, dist);
case SwingConstants.NORTH_EAST:
return new Rectangle(x + w - dist, y, dist, dist);
case SwingConstants.SOUTH_WEST:
return new Rectangle(x, y + h - dist, dist, dist);
case SwingConstants.SOUTH_EAST:
return new Rectangle(x + w - dist, y + h - dist, dist, dist);
}
return null;
}
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
GeneralPath arrow = new GeneralPath();
int w, h;
switch (direction) {
case SwingConstants.SOUTH:
h = 2;
w = 4;
arrow.moveTo(getWidth() / 2 - w, getHeight() / 2);
arrow.lineTo(getWidth() / 2 + w, getHeight() / 2);
arrow.lineTo(getWidth() / 2, getHeight() / 2 + 2 * h);
arrow.closePath();
break;
case SwingConstants.EAST:
h = 4;
w = 2;
arrow.moveTo(getWidth() / 2 - w, getHeight() / 2 - h);
arrow.lineTo(getWidth() / 2 + w, getHeight() / 2);
arrow.lineTo(getWidth() / 2 - w, getHeight() / 2 + h);
arrow.closePath();
break;
default:
throw new IllegalArgumentException("Illegal direction: " + direction);
}
if (isEnabled()) {
g.setColor(Color.BLACK);
} else {
g.setColor(Color.GRAY);
}
((Graphics2D) g).fill(arrow);
}
private static boolean isBasis(int constraint) {
if (constraint == SwingConstants.NORTH) return true;
if (constraint == SwingConstants.WEST) return true;
if (constraint == SwingConstants.SOUTH) return true;
if (constraint == SwingConstants.EAST) return true;
if (constraint == SwingConstants.CENTER) return true;
return false;
}
/**
* Returns the amount of space to use between two components. The return
* value indicates the distance to place <code>component2</code> relative to
* <code>component1</code>. For example, the following returns the amount of
* space to place between <code>component2</code> and
* <code>component1</code> when <code>component2</code> is placed vertically
* above <code>component1</code>:
*
* <pre>
* int gap = getPreferredGap(component1, component2, LayoutStyle.RELATED, SwingConstants.NORTH, parent);
* </pre>
*
* The <code>type</code> parameter indicates the type of gap being
* requested. It can be one of the following values:
* <table>
* <tr>
* <td><code>RELATED</code>
* <td>If the two components will be contained in the same parent and are
* showing similar logically related items, use <code>RELATED</code>.
* <tr>
* <td><code>UNRELATED</code>
* <td>If the two components will be contained in the same parent but show
* logically unrelated items use <code>UNRELATED</code>.
* <tr>
* <td><code>INDENT</code>
* <td>Used to obtain the preferred distance to indent a component relative
* to another. For example, if you want to horizontally indent a JCheckBox
* relative to a JLabel use <code>INDENT</code>. This is only useful for the
* horizontal axis.
* </table>
* <p>
* It's important to note that some look and feels may not distinguish
* between <code>RELATED</code> and <code>UNRELATED</code>.
* <p>
* The return value is not intended to take into account the current size
* and position of <code>component2</code> or <code>component1</code>. The
* return value may take into consideration various properties of the
* components. For example, the space may vary based on font size, or the
* preferred size of the component.
*
* @param component1
* the <code>JComponent</code> <code>component2</code> is being
* placed relative to
* @param component2
* the <code>JComponent</code> being placed
* @param type
* how the two components are being placed
* @param position
* the position <code>component2</code> is being placed relative
* to <code>component1</code>; one of
* <code>SwingConstants.NORTH</code>,
* <code>SwingConstants.SOUTH</code>,
* <code>SwingConstants.EAST</code> or
* <code>SwingConstants.WEST</code>
* @param parent
* the parent of <code>component2</code>; this may differ from
* the actual parent and may be null
* @return the amount of space to place between the two components
* @throws IllegalArgumentException
* if <code>position</code> is not one of
* <code>SwingConstants.NORTH</code>,
* <code>SwingConstants.SOUTH</code>,
* <code>SwingConstants.EAST</code> or
* <code>SwingConstants.WEST</code>; <code>type</code> not one
* of <code>INDENT</code>, <code>RELATED</code> or
* <code>UNRELATED</code>; or <code>component1</code> or
* <code>component2</code> is null
*/
public int getPreferredGap(JComponent component1, JComponent component2, int type, int position, Container parent) {
if (position != SwingConstants.NORTH && position != SwingConstants.SOUTH && position != SwingConstants.WEST
&& position != SwingConstants.EAST) {
throw new IllegalArgumentException("Invalid position");
}
if (component1 == null || component2 == null) {
throw new IllegalArgumentException("Components must be non-null");
}
if (type == RELATED) {
return 6;
} else if (type == UNRELATED) {
return 12;
} else if (type == INDENT) {
if (position == SwingConstants.EAST || position == SwingConstants.WEST) {
int gap = getButtonChildIndent(component1, position);
if (gap != 0) {
return gap;
}
return 6;
}
return 6;
}
throw new IllegalArgumentException("Invalid type");
}
public DropDownArrowButton() {
super(SwingConstants.SOUTH);
}
/** The operation to perform when this action is triggered. */
public void actionPerformed(ActionEvent e) {
JTextComponent target = getTextComponent(e);
if (target != null) {
Caret caret = target.getCaret();
DefaultCaret bidiCaret = (caret instanceof DefaultCaret) ?
(DefaultCaret)caret : null;
int dot = caret.getDot();
Position.Bias[] bias = new Position.Bias[1];
Point magicPosition = caret.getMagicCaretPosition();
try {
if(magicPosition == null &&
(direction == SwingConstants.NORTH ||
direction == SwingConstants.SOUTH)) {
Rectangle r = (bidiCaret != null) ?
target.getUI().modelToView(target, dot,
bidiCaret.getDotBias()) :
target.modelToView(dot);
magicPosition = new Point(r.x, r.y);
}
NavigationFilter filter = target.getNavigationFilter();
if (filter != null) {
dot = filter.getNextVisualPositionFrom
(target, dot, (bidiCaret != null) ?
bidiCaret.getDotBias() :
Position.Bias.Forward, direction, bias);
}
else {
dot = target.getUI().getNextVisualPositionFrom
(target, dot, (bidiCaret != null) ?
bidiCaret.getDotBias() :
Position.Bias.Forward, direction, bias);
}
if(bias[0] == null) {
bias[0] = Position.Bias.Forward;
}
if(bidiCaret != null) {
if (select) {
bidiCaret.moveDot(dot, bias[0]);
} else {
bidiCaret.setDot(dot, bias[0]);
}
}
else {
if (select) {
caret.moveDot(dot);
} else {
caret.setDot(dot);
}
}
if(magicPosition != null &&
(direction == SwingConstants.NORTH ||
direction == SwingConstants.SOUTH)) {
target.getCaret().setMagicCaretPosition(magicPosition);
}
} catch (BadLocationException ex) {
}
}
}
public void defineShape(Rectangle r) {
shape = new GeneralPath();
int k1 = 15;
int k2 = 8;
switch (position) {
case SwingConstants.NORTH_WEST:
shape.moveTo(r.x, r.y);
shape.lineTo(r.x + k1, r.y);
shape.lineTo(r.x + k1, r.y - k2);
shape.lineTo(r.x - k2, r.y - k2);
shape.lineTo(r.x - k2, r.y + k1);
shape.lineTo(r.x, r.y + k1);
shape.closePath();
break;
case SwingConstants.NORTH_EAST:
shape.moveTo(r.x + r.width, r.y);
shape.lineTo(r.x + r.width - k1, r.y);
shape.lineTo(r.x + r.width - k1, r.y - k2);
shape.lineTo(r.x + r.width + k2, r.y - k2);
shape.lineTo(r.x + r.width + k2, r.y + k1);
shape.lineTo(r.x + r.width, r.y + k1);
shape.closePath();
break;
case SwingConstants.SOUTH_WEST:
shape.moveTo(r.x, r.y + r.height);
shape.lineTo(r.x + k1, r.y + r.height);
shape.lineTo(r.x + k1, r.y + r.height + k2);
shape.lineTo(r.x - k2, r.y + r.height + k2);
shape.lineTo(r.x - k2, r.y + r.height - k1);
shape.lineTo(r.x, r.y + r.height - k1);
shape.closePath();
break;
case SwingConstants.SOUTH_EAST:
shape.moveTo(r.x + r.width, r.y + r.height);
shape.lineTo(r.x + r.width - k1, r.y + r.height);
shape.lineTo(r.x + r.width - k1, r.y + r.height + k2);
shape.lineTo(r.x + r.width + k2, r.y + r.height + k2);
shape.lineTo(r.x + r.width + k2, r.y + r.height - k1);
shape.lineTo(r.x + r.width, r.y + r.height - k1);
shape.closePath();
break;
case SwingConstants.NORTH:
shape.moveTo(r.x + r.width / 2 - k1 / 2, r.y);
shape.lineTo(r.x + r.width / 2 + k1 / 2, r.y);
shape.lineTo(r.x + r.width / 2 + k1 / 2, r.y - k2);
shape.lineTo(r.x + r.width / 2 - k1 / 2, r.y - k2);
break;
case SwingConstants.SOUTH:
shape.moveTo(r.x + r.width / 2 - k1 / 2, r.y + r.height);
shape.lineTo(r.x + r.width / 2 + k1 / 2, r.y + r.height);
shape.lineTo(r.x + r.width / 2 + k1 / 2, r.y + r.height
+ k2);
shape.lineTo(r.x + r.width / 2 - k1 / 2, r.y + r.height
+ k2);
break;
case SwingConstants.EAST:
shape.moveTo(r.x, r.y + r.height / 2 - k1 / 2);
shape.lineTo(r.x, r.y + r.height / 2 + k1 / 2);
shape.lineTo(r.x - k2, r.y + r.height / 2 + k1 / 2);
shape.lineTo(r.x - k2, r.y + r.height / 2 - k1 / 2);
break;
case SwingConstants.WEST:
shape.moveTo(r.x + r.width, r.y + r.height / 2 - k1 / 2);
shape.lineTo(r.x + r.width, r.y + r.height / 2 + k1 / 2);
shape.lineTo(r.x + r.width + k2, r.y + r.height / 2 + k1
/ 2);
shape.lineTo(r.x + r.width + k2, r.y + r.height / 2 - k1
/ 2);
break;
default:
throw new RuntimeException("unexpected position: "
+ position);
}
}
public DropDownArrowButton(DropDownButton attachedButton) {
super(SwingConstants.SOUTH);
this.attachedButton = attachedButton;
}
/** The operation to perform when this action is triggered. */
public void actionPerformed(ActionEvent e) {
JTextComponent target = getTextComponent(e);
if (target != null) {
Caret caret = target.getCaret();
DefaultCaret bidiCaret = (caret instanceof DefaultCaret) ?
(DefaultCaret)caret : null;
int dot = caret.getDot();
Position.Bias[] bias = new Position.Bias[1];
Point magicPosition = caret.getMagicCaretPosition();
try {
if(magicPosition == null &&
(direction == SwingConstants.NORTH ||
direction == SwingConstants.SOUTH)) {
Rectangle r = (bidiCaret != null) ?
target.getUI().modelToView(target, dot,
bidiCaret.getDotBias()) :
target.modelToView(dot);
magicPosition = new Point(r.x, r.y);
}
NavigationFilter filter = target.getNavigationFilter();
if (filter != null) {
dot = filter.getNextVisualPositionFrom
(target, dot, (bidiCaret != null) ?
bidiCaret.getDotBias() :
Position.Bias.Forward, direction, bias);
}
else {
dot = target.getUI().getNextVisualPositionFrom
(target, dot, (bidiCaret != null) ?
bidiCaret.getDotBias() :
Position.Bias.Forward, direction, bias);
}
if(bias[0] == null) {
bias[0] = Position.Bias.Forward;
}
if(bidiCaret != null) {
if (select) {
bidiCaret.moveDot(dot, bias[0]);
} else {
bidiCaret.setDot(dot, bias[0]);
}
}
else {
if (select) {
caret.moveDot(dot);
} else {
caret.setDot(dot);
}
}
if(magicPosition != null &&
(direction == SwingConstants.NORTH ||
direction == SwingConstants.SOUTH)) {
target.getCaret().setMagicCaretPosition(magicPosition);
}
} catch (BadLocationException ex) {
}
}
}
/** The operation to perform when this action is triggered. */
public void actionPerformed(ActionEvent e) {
JTextComponent target = getTextComponent(e);
if (target != null) {
Caret caret = target.getCaret();
DefaultCaret bidiCaret = (caret instanceof DefaultCaret) ?
(DefaultCaret)caret : null;
int dot = caret.getDot();
Position.Bias[] bias = new Position.Bias[1];
Point magicPosition = caret.getMagicCaretPosition();
try {
if(magicPosition == null &&
(direction == SwingConstants.NORTH ||
direction == SwingConstants.SOUTH)) {
Rectangle r = (bidiCaret != null) ?
target.getUI().modelToView(target, dot,
bidiCaret.getDotBias()) :
target.modelToView(dot);
magicPosition = new Point(r.x, r.y);
}
NavigationFilter filter = target.getNavigationFilter();
if (filter != null) {
dot = filter.getNextVisualPositionFrom
(target, dot, (bidiCaret != null) ?
bidiCaret.getDotBias() :
Position.Bias.Forward, direction, bias);
}
else {
dot = target.getUI().getNextVisualPositionFrom
(target, dot, (bidiCaret != null) ?
bidiCaret.getDotBias() :
Position.Bias.Forward, direction, bias);
}
if(bias[0] == null) {
bias[0] = Position.Bias.Forward;
}
if(bidiCaret != null) {
if (select) {
bidiCaret.moveDot(dot, bias[0]);
} else {
bidiCaret.setDot(dot, bias[0]);
}
}
else {
if (select) {
caret.moveDot(dot);
} else {
caret.setDot(dot);
}
}
if(magicPosition != null &&
(direction == SwingConstants.NORTH ||
direction == SwingConstants.SOUTH)) {
target.getCaret().setMagicCaretPosition(magicPosition);
}
} catch (BadLocationException ex) {
}
}
}
/**
* Determines if we are moving south side of the component during resizing.
*
* @return {@code true} is we are moving south side of the component,
* returns {@code false} otherwise.
*/
private boolean isResizingSouthward() {
return (resizingMode == SwingConstants.SOUTH
|| resizingMode == SwingConstants.SOUTH_EAST
|| resizingMode == SwingConstants.SOUTH_WEST);
}