Class RowLayout
Composite by placing them either in 
 horizontal rows or vertical columns within the parent Composite. 
 
 RowLayout aligns all controls in one row if the
 type 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. RowLayout has a number of configuration 
 fields. In addition, the height and width of each control in a 
 RowLayout can be specified by setting a RowData
 object into the control using setLayoutData ().
 
 The following example code creates a RowLayout, sets all 
 of its fields to non-default values, and then sets it into a 
 Shell. 
 
    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);
 
 If you are using the default field values, you only need one line of code:
 
    shell.setLayout(new RowLayout());
 
 - Since:
- 1.0
- See Also:
- 
Field SummaryFieldsModifier and TypeFieldDescriptionbooleancenter 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.booleanfill specifies whether the controls in a row should be all the same height for horizontal layouts, or the same width for vertical layouts.booleanjustify specifies whether the controls in a row should be fully justified, with any extra space placed between the controls.intmarginBottom specifies the number of pixels of vertical margin that will be placed along the bottom edge of the layout.intmarginHeight specifies the number of pixels of vertical margin that will be placed along the top and bottom edges of the layout.intmarginLeft specifies the number of pixels of horizontal margin that will be placed along the left edge of the layout.intmarginRight specifies the number of pixels of horizontal margin that will be placed along the right edge of the layout.intmarginTop specifies the number of pixels of vertical margin that will be placed along the top edge of the layout.intmarginWidth specifies the number of pixels of horizontal margin that will be placed along the left and right edges of the layout.booleanpack specifies whether all controls in the layout take their preferred size.intspacing specifies the number of pixels between the edge of one cell and the edge of its neighbouring cell.inttype specifies whether the layout places controls in rows or columns.booleanwrap specifies whether a control will be wrapped to the next row if there is insufficient space on the current row.
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Constructor SummaryConstructors
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Method SummaryModifier and TypeMethodDescriptionprotected PointcomputeSize(Composite composite, int wHint, int hHint, boolean flushCache) Computes and returns the size of the specified composite's client area according to this layout.protected booleanflushCache(Control control) Instruct the layout to flush any cached values associated with the control specified in the argumentcontrol.protected voidLays out the children of the specified composite according to this layout.toString()Returns a string containing a concise, human-readable description of the receiver.
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Field Details- 
typepublic int typetype specifies whether the layout places controls in rows or columns. The default value is HORIZONTAL. Possible values are:- HORIZONTAL: Position the controls horizontally from left to right
- VERTICAL: Position the controls vertically from top to bottom
 
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marginWidthpublic int marginWidthmarginWidth specifies the number of pixels of horizontal margin that will be placed along the left and right edges of the layout. The default value is 0.
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marginHeightpublic int marginHeightmarginHeight specifies the number of pixels of vertical margin that will be placed along the top and bottom edges of the layout. The default value is 0.
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spacingpublic int spacingspacing specifies the number of pixels between the edge of one cell and the edge of its neighbouring cell. The default value is 3.
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wrappublic boolean wrapwrap specifies whether a control will be wrapped to the next row if there is insufficient space on the current row. The default value is true.
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packpublic boolean packpack 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. The default value is true.
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fillpublic boolean fillfill specifies whether the controls in a row should be all the same height for horizontal layouts, or the same width for vertical layouts. The default value is false.
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centerpublic boolean centercenter 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. The default value is false.- Since:
- 1.2
 
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justifypublic boolean justifyjustify specifies whether the controls in a row should be fully justified, with any extra space placed between the controls. The default value is false.
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marginLeftpublic int marginLeftmarginLeft specifies the number of pixels of horizontal margin that will be placed along the left edge of the layout. The default value is 3.
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marginToppublic int marginTopmarginTop specifies the number of pixels of vertical margin that will be placed along the top edge of the layout. The default value is 3.
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marginRightpublic int marginRightmarginRight specifies the number of pixels of horizontal margin that will be placed along the right edge of the layout. The default value is 3.
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marginBottompublic int marginBottommarginBottom specifies the number of pixels of vertical margin that will be placed along the bottom edge of the layout. The default value is 3.
 
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Constructor Details- 
RowLayoutpublic RowLayout()Constructs a new instance of this class.
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RowLayoutpublic RowLayout(int type) Constructs a new instance of this class given the type.- Parameters:
- type- the type of row layout
 
 
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Method Details- 
computeSizeDescription copied from class:LayoutComputes 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. - Specified by:
- computeSizein class- Layout
- Parameters:
- composite- a composite widget using this layout
- wHint- width (- SWT.DEFAULTfor preferred size)
- hHint- height (- SWT.DEFAULTfor preferred size)
- flushCache-- truemeans flush cached layout values
- Returns:
- a point containing the computed size (width, height)
- See Also:
- 
- Layout.layout(org.eclipse.swt.widgets.Composite, boolean)
- Control.getBorderWidth()
- Control.getBounds()
- Control.getSize()
- Control.pack(boolean)
- "computeTrim, getClientArea for controls that implement them"
 
 
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flushCacheDescription copied from class:LayoutInstruct the layout to flush any cached values associated with the control specified in the argumentcontrol.- Overrides:
- flushCachein class- Layout
- Parameters:
- control- a control managed by this layout
- Returns:
- true if the Layout has flushed all cached information associated with control
 
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layoutDescription copied from class:LayoutLays 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. 
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toStringReturns a string containing a concise, human-readable description of the receiver.
 
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