RowLayout

Instances of this class determine the size and position of the children of a <code>Composite</code> by placing them either in horizontal rows or vertical columns within the parent <code>Composite</code>. <code>RowLayout</code> aligns all controls in one row if the <code>type</code> is set to horizontal, and one column if it is set to vertical. It has the ability to wrap, and provides configurable margins and spacing. <code>RowLayout</code> has a number of configuration fields. In addition, the height and width of each control in a <code>RowLayout</code> can be specified by setting a <code>RowData</code> object into the control using <code>setLayoutData ()</code>. The following example code creates a <code>RowLayout</code>, sets all of its fields to non-default values, and then sets it into a <code>Shell</code>. <pre> RowLayout rowLayout = new RowLayout(); rowLayout.wrap = false; rowLayout.pack = false; rowLayout.justify = true; rowLayout.type = SWT.VERTICAL; rowLayout.marginLeft = 5; rowLayout.marginTop = 5; rowLayout.marginRight = 5; rowLayout.marginBottom = 5; rowLayout.spacing = 0; shell.setLayout(rowLayout); </pre> If you are using the default field values, you only need one line of code: <pre> shell.setLayout(new RowLayout()); </pre>

@see RowData @see <a href="http://www.eclipse.org/swt/snippets/#rowlayout">RowLayout snippets</a> @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: LayoutExample</a> @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>

final

class RowLayout : Layout {

this();

String toString();

}

Constructors

this this(): Constructs a new instance of this class.
this this(int type): Constructs a new instance of this class given the type.

Members

Functions

toString String toString(): Returns a string containing a concise, human-readable description of the receiver.

Variables

center bool center;: center specifies whether the controls in a row should be centered vertically in each cell for horizontal layouts, or centered horizontally in each cell for vertical layouts.
fill bool fill;: fill specifies whether the controls in a row should be all the same height for horizontal layouts, or the same width for vertical layouts.
justify bool justify;: justify specifies whether the controls in a row should be fully justified, with any extra space placed between the controls.
marginBottom int marginBottom;: marginBottom specifies the number of pixels of vertical margin that will be placed along the bottom edge of the layout.
marginHeight int marginHeight;: marginHeight specifies the number of pixels of vertical margin that will be placed along the top and bottom edges of the layout.
marginLeft int marginLeft;: marginLeft specifies the number of pixels of horizontal margin that will be placed along the left edge of the layout.
marginRight int marginRight;: marginRight specifies the number of pixels of horizontal margin that will be placed along the right edge of the layout.
marginTop int marginTop;: marginTop specifies the number of pixels of vertical margin that will be placed along the top edge of the layout.
marginWidth int marginWidth;: marginWidth specifies the number of pixels of horizontal margin that will be placed along the left and right edges of the layout.
pack bool pack;: pack specifies whether all controls in the layout take their preferred size. If pack is false, all controls will have the same size which is the size required to accommodate the largest preferred height and the largest preferred width of all the controls in the layout.
spacing int spacing;: spacing specifies the number of pixels between the edge of one cell and the edge of its neighbouring cell.
type int type;: type specifies whether the layout places controls in rows or columns.
wrap bool wrap;: wrap specifies whether a control will be wrapped to the next row if there is insufficient space on the current row.

Inherited Members

From Layout

computeSize Point computeSize(Composite composite, int wHint, int hHint, bool flushCache): Computes and returns the size of the specified composite's client area according to this layout. This method computes the size that the client area of the composite must be in order to position all children at their preferred size inside the composite according to the layout algorithm encoded by this layout. When a width or height hint is supplied, it is used to constrain the result. For example, if a width hint is provided that is less than the width of the client area, the layout may choose to wrap and increase height, clip, overlap, or otherwise constrain the children.
flushCache bool flushCache(Control control): Instruct the layout to flush any cached values associated with the control specified in the argument <code>control</code>.
layout void layout(Composite composite, bool flushCache): Lays out the children of the specified composite according to this layout. This method positions and sizes the children of a composite using the layout algorithm encoded by this layout. Children of the composite are positioned in the client area of the composite. The position of the composite is not altered by this method. When the flush cache hint is true, the layout is instructed to flush any cached values associated with the children. Typically, a layout will cache the preferred sizes of the children to avoid the expense of computing these values each time the widget is laid out. When layout is triggered explicitly by the programmer the flush cache hint is true. When layout is triggered by a resize, either caused by the programmer or by the user, the hint is false.