- java.lang.Object
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- javax.swing.border.AbstractBorder
 
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- All Implemented Interfaces:
- Serializable,- Border
 - Direct Known Subclasses:
- BasicBorders.ButtonBorder,- BasicBorders.FieldBorder,- BasicBorders.MarginBorder,- BasicBorders.MenuBarBorder,- BevelBorder,- CompoundBorder,- EmptyBorder,- EtchedBorder,- LineBorder,- MetalBorders.ButtonBorder,- MetalBorders.Flush3DBorder,- MetalBorders.InternalFrameBorder,- MetalBorders.MenuBarBorder,- MetalBorders.MenuItemBorder,- MetalBorders.OptionDialogBorder,- MetalBorders.PaletteBorder,- MetalBorders.PopupMenuBorder,- MetalBorders.ScrollPaneBorder,- MetalBorders.TableHeaderBorder,- MetalBorders.ToolBarBorder,- StrokeBorder,- TitledBorder
 
 public abstract class AbstractBorder extends Object implements Border, Serializable A class that implements an empty border with no size. This provides a convenient base class from which other border classes can be easily derived.Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans™ has been added to the java.beanspackage. Please seeXMLEncoder.- See Also:
- Serialized Form
 
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Constructor SummaryConstructors Constructor Description AbstractBorder()
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Method SummaryAll Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description intgetBaseline(Component c, int width, int height)Returns the baseline.Component.BaselineResizeBehaviorgetBaselineResizeBehavior(Component c)Returns an enum indicating how the baseline of a component changes as the size changes.InsetsgetBorderInsets(Component c)This default implementation returns a newInsetsobject that is initialized by thegetBorderInsets(Component,Insets)method.InsetsgetBorderInsets(Component c, Insets insets)Reinitializes the insets parameter with this Border's current Insets.RectanglegetInteriorRectangle(Component c, int x, int y, int width, int height)This convenience method calls the static method.static RectanglegetInteriorRectangle(Component c, Border b, int x, int y, int width, int height)Returns a rectangle using the arguments minus the insets of the border.booleanisBorderOpaque()This default implementation returns false.voidpaintBorder(Component c, Graphics g, int x, int y, int width, int height)This default implementation does no painting.
 
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Method Detail- 
paintBorderpublic void paintBorder(Component c, Graphics g, int x, int y, int width, int height) This default implementation does no painting.- Specified by:
- paintBorderin interface- Border
- Parameters:
- c- the component for which this border is being painted
- g- the paint graphics
- x- the x position of the painted border
- y- the y position of the painted border
- width- the width of the painted border
- height- the height of the painted border
 
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getBorderInsetspublic Insets getBorderInsets(Component c) This default implementation returns a newInsetsobject that is initialized by thegetBorderInsets(Component,Insets)method. By default thetop,left,bottom, andrightfields are set to0.- Specified by:
- getBorderInsetsin interface- Border
- Parameters:
- c- the component for which this border insets value applies
- Returns:
- a new Insetsobject
 
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getBorderInsetspublic Insets getBorderInsets(Component c, Insets insets) Reinitializes the insets parameter with this Border's current Insets.- Parameters:
- c- the component for which this border insets value applies
- insets- the object to be reinitialized
- Returns:
- the insetsobject
 
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isBorderOpaquepublic boolean isBorderOpaque() This default implementation returns false.- Specified by:
- isBorderOpaquein interface- Border
- Returns:
- false
 
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getInteriorRectanglepublic Rectangle getInteriorRectangle(Component c, int x, int y, int width, int height) This convenience method calls the static method.- Parameters:
- c- the component for which this border is being computed
- x- the x position of the border
- y- the y position of the border
- width- the width of the border
- height- the height of the border
- Returns:
- a Rectanglecontaining the interior coordinates
 
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getInteriorRectanglepublic static Rectangle getInteriorRectangle(Component c, Border b, int x, int y, int width, int height) Returns a rectangle using the arguments minus the insets of the border. This is useful for determining the area that components should draw in that will not intersect the border.- Parameters:
- c- the component for which this border is being computed
- b- the- Borderobject
- x- the x position of the border
- y- the y position of the border
- width- the width of the border
- height- the height of the border
- Returns:
- a Rectanglecontaining the interior coordinates
 
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getBaselinepublic int getBaseline(Component c, int width, int height) Returns the baseline. A return value less than 0 indicates the border does not have a reasonable baseline.The default implementation returns -1. Subclasses that support baseline should override appropriately. If a value >= 0 is returned, then the component has a valid baseline for any size >= the minimum size and getBaselineResizeBehaviorcan be used to determine how the baseline changes with size.- Parameters:
- c-- Componentbaseline is being requested for
- width- the width to get the baseline for
- height- the height to get the baseline for
- Returns:
- the baseline or < 0 indicating there is no reasonable baseline
- Throws:
- IllegalArgumentException- if width or height is < 0
- Since:
- 1.6
- See Also:
- Component.getBaseline(int,int),- Component.getBaselineResizeBehavior()
 
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getBaselineResizeBehaviorpublic Component.BaselineResizeBehavior getBaselineResizeBehavior(Component c) Returns an enum indicating how the baseline of a component changes as the size changes. This method is primarily meant for layout managers and GUI builders.The default implementation returns BaselineResizeBehavior.OTHER, subclasses that support baseline should override appropriately. Subclasses should never returnnull; if the baseline can not be calculated returnBaselineResizeBehavior.OTHER. Callers should first ask for the baseline usinggetBaselineand if a value >= 0 is returned use this method. It is acceptable for this method to return a value other thanBaselineResizeBehavior.OTHEReven ifgetBaselinereturns a value less than 0.- Parameters:
- c-- Componentto return baseline resize behavior for
- Returns:
- an enum indicating how the baseline changes as the border is resized
- Since:
- 1.6
- See Also:
- Component.getBaseline(int,int),- Component.getBaselineResizeBehavior()
 
 
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