uic.layout
Class Constraints

java.lang.Object
  uic.layout.Constraints

Direct Known Subclasses:

Entry

public class Constraints

extends Object

In finding a place in the grid of the NaturalLayout you can add a Constraints object add adding the widget to the parent.

   JPanel parent = new JPanel(new NaturalLayout(10, 10));
   parent.add(myChildWidget, new Constraint("0,0");
 

The different constructors in this class will give you more hints to the options you have. The most convenient method of adding a widget is using the constructor that takes a formatted String. You can even leave away the invocation of a new Constraints object so your add could look like:

    parent.add(myChildWidget, "1,0, 2,0");
 

Since:

1.1

See Also:

NaturalLayout

Field Summary

static char	ALIGN_HORIZONTAL_CENTER
static char	ALIGN_HORIZONTAL_FILLED
static char	ALIGN_HORIZONTAL_LEFT
static char	ALIGN_HORIZONTAL_RIGHT
static char	ALIGN_VERTICAL_BOTTOM
static char	ALIGN_VERTICAL_CENTER
static char	ALIGN_VERTICAL_FILLED
static char	ALIGN_VERTICAL_TOP
protected int	col1 Cell in which the upper left corner of the component lays
protected int	col2 Cell in which the lower right corner of the component lays
protected int	hAlign justification
protected int	horizontalPolicy sizing policies
protected int	row1 Cell in which the upper left corner of the component lays
protected int	row2 Cell in which the lower right corner of the component lays
static String	SIZE_POLICY_EXPANDING
static String	SIZE_POLICY_FIXED
static String	SIZE_POLICY_IGNORED
static String	SIZE_POLICY_MAXIMUM
static String	SIZE_POLICY_MINIMUM
static String	SIZE_POLICY_MINIMUM_EXPANDING
static String	SIZE_POLICY_PREFERRED
protected int	vAlign justification
protected int	verticalPolicy sizing policies

Constructor Summary

Constraints()
Constructs an Constraints with the default settings.

Constraints(int col1, int row1, int col2, int row2, int hAlign, int vAlign)

Constraints(int col1, int row1, int col2, int row2, int hAlign, int vAlign, int horizontalPolicy, int verticalPolicy)
Constructs an Constraints a set of constraints.

Constraints(String constraints)
Constructs an Constraints from a string.

Method Summary

String

toString() Gets a string representation of this Constraints.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

ALIGN_HORIZONTAL_LEFT

public static final char ALIGN_HORIZONTAL_LEFT

See Also:

Constant Field Values

ALIGN_HORIZONTAL_RIGHT

public static final char ALIGN_HORIZONTAL_RIGHT

See Also:

Constant Field Values

ALIGN_HORIZONTAL_CENTER

public static final char ALIGN_HORIZONTAL_CENTER

See Also:

Constant Field Values

ALIGN_HORIZONTAL_FILLED

public static final char ALIGN_HORIZONTAL_FILLED

See Also:

Constant Field Values

ALIGN_VERTICAL_TOP

public static final char ALIGN_VERTICAL_TOP

See Also:

Constant Field Values

ALIGN_VERTICAL_BOTTOM

public static final char ALIGN_VERTICAL_BOTTOM

See Also:

Constant Field Values

ALIGN_VERTICAL_CENTER

public static final char ALIGN_VERTICAL_CENTER

See Also:

Constant Field Values

ALIGN_VERTICAL_FILLED

public static final char ALIGN_VERTICAL_FILLED

See Also:

Constant Field Values

SIZE_POLICY_FIXED

public static final String SIZE_POLICY_FIXED

See Also:

Constant Field Values

SIZE_POLICY_MINIMUM

public static final String SIZE_POLICY_MINIMUM

See Also:

Constant Field Values

SIZE_POLICY_MAXIMUM

public static final String SIZE_POLICY_MAXIMUM

See Also:

Constant Field Values

SIZE_POLICY_PREFERRED

public static final String SIZE_POLICY_PREFERRED

See Also:

Constant Field Values

SIZE_POLICY_MINIMUM_EXPANDING

public static final String SIZE_POLICY_MINIMUM_EXPANDING

See Also:

Constant Field Values

SIZE_POLICY_EXPANDING

public static final String SIZE_POLICY_EXPANDING

See Also:

Constant Field Values

SIZE_POLICY_IGNORED

public static final String SIZE_POLICY_IGNORED

See Also:

Constant Field Values

col1

protected int col1

Cell in which the upper left corner of the component lays

row1

protected int row1

Cell in which the upper left corner of the component lays

col2

protected int col2

Cell in which the lower right corner of the component lays

row2

protected int row2

Cell in which the lower right corner of the component lays

hAlign

protected int hAlign

justification

vAlign

protected int vAlign

justification

horizontalPolicy

protected int horizontalPolicy

sizing policies

verticalPolicy

protected int verticalPolicy

sizing policies

Constructor Detail

Constraints

public Constraints()

Constructs an Constraints with the default settings. This constructor is equivalent to Constraints(0, 0, 0, 0, NaturalLayout.ALIGN_FULL, NaturalLayout.ALIGN_FULL).

Constraints

public Constraints(String constraints)

Constructs an Constraints from a string. Using this constructor you will have all options available by creating a formatted string. The format build from 3 parts that can be left out at your choice;

• The start coordinates in the form "x1, y1". You need these always.
• The end coordinates in the form "x2, y2". Optional
• The alignment. In the format "C,T".
  Use either 'L','R','C','F' or the static variables defined in this class.

Examples:
"1,0" Widget in x=1 and y=0 and full alignment horizontal and vertical.
"1,0,1,1" Widget in both (1,0) and (1,1) with full alignment horizontal and vertical.
"1,0,C" Widget in (1,0) with centered alignment horizontal and full alignment vertical.
"1,0,L,B" Widget in (1,0) with left alignment horizontal and bottom alignment vertical.
"2,2,3,3,C,T" Widget in (2,2), (2,2), (3,2) and (3.3) with centerd alignment horizontal and top alignment vertical.

Parameters:

constraints - indicates Constraints's position and justification as a string in the form "column, row" or "column, row, horizontal justification, vertical justification" or "column 1, row 1, column 2, row 2". It is also acceptable to delimit the paramters with spaces instead of commas.

Constraints

public Constraints(int col1,
                   int row1,
                   int col2,
                   int row2,
                   int hAlign,
                   int vAlign)

Constraints

public Constraints(int col1,
                   int row1,
                   int col2,
                   int row2,
                   int hAlign,
                   int vAlign,
                   int horizontalPolicy,
                   int verticalPolicy)

Constructs an Constraints a set of constraints.

Parameters:

col1 - column where upper-left cornor of the component is placed

row1 - row where upper-left cornor of the component is placed

col2 - column where lower-right cornor of the component is placed

row2 - row where lower-right cornor of the component is placed

hAlign - horizontal justification of a component in a single cell

vAlign - vertical justification of a component in a single cell

horizontalPolicy - the sizing policy horizontally

verticalPolicy - the sizing policy vertically

Method Detail

toString

public String toString()

Gets a string representation of this Constraints.

Returns:

a string in the form "column 1, row 1, column 2, row 2" or "column, row, horizontal justification, vertical justification"