javax.swing.border
Class AbstractBorder
- Border, Serializable
An invisible zero-width border, serving as a base class for
implementing more interesting borders.
Insets | getBorderInsets(Component c)- Returns the insets required for drawing this border around the specified
component.
|
Insets | getBorderInsets(Component c, Insets insets)- Returns the insets required for drawing this border around the specified
component.
|
Rectangle | getInteriorRectangle(Component c, int x, int y, int width, int height)- Returns a rectangle that covers the specified area minus the insets
required to draw this border.
|
static Rectangle | getInteriorRectangle(Component c, Border b, int x, int y, int width, int height)- Returns a rectangle that covers the specified area minus the insets
required to draw the specified border (if the border is
null,
zero insets are assumed).
|
boolean | isBorderOpaque()- Determines whether or not this border is opaque.
|
void | paintBorder(Component c, Graphics g, int x, int y, int width, int height)- Performs nothing, because the default implementation provided by
this class is an invisible, zero-width border.
|
clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait |
AbstractBorder
public AbstractBorder()
Constructs a new AbstractBorder.
getBorderInsets
public Insets getBorderInsets(Component c)
Returns the insets required for drawing this border around the specified
component.
- getBorderInsets in interface Border
c - the component that the border applies to (ignored here,
subclasses may use it).
- an Insets object whose
left, right,
top and bottom fields indicate the
width of the border at the respective edge, which is zero
for the default implementation provided by AbstractButton.
getBorderInsets
public Insets getBorderInsets(Component c,
Insets insets) Returns the insets required for drawing this border around the specified
component. The default implementation provided here sets the
left, right, top and
bottom fields of the passed insets parameter to
zero.
c - the component that the border applies to (ignored here,
subclasses may use it).insets - an instance that will be overwritten and returned as the
result (null not permitted).
- The border insets (the same object that was passed as the
insets argument).
getInteriorRectangle
public Rectangle getInteriorRectangle(Component c,
int x,
int y,
int width,
int height) Returns a rectangle that covers the specified area minus the insets
required to draw this border. Components that wish to determine an area
into which they can safely draw without intersecting with a border might
want to use this helper method.
c - the component in the center of this border.x - the horizontal position of the border.y - the vertical position of the border.width - the width of the available area for the border.height - the height of the available area for the border.
getInteriorRectangle
public static Rectangle getInteriorRectangle(Component c,
Border b,
int x,
int y,
int width,
int height) Returns a rectangle that covers the specified area minus the insets
required to draw the specified border (if the border is null,
zero insets are assumed). Components that wish to determine an area into
which they can safely draw without intersecting with a border might want
to use this helper method.
c - the component in the center of this border.b - the border (null permitted).x - the horizontal position of the border.y - the vertical position of the border.width - the width of the available area for the border.height - the height of the available area for the border.
isBorderOpaque
public boolean isBorderOpaque()
Determines whether or not this border is opaque. An opaque border
fills every pixel in its area when painting. Partially
translucent borders must return false, or ugly
artifacts can appear on screen. The default implementation
provided here always returns false.
- isBorderOpaque in interface Border
paintBorder
public void paintBorder(Component c,
Graphics g,
int x,
int y,
int width,
int height) Performs nothing, because the default implementation provided by
this class is an invisible, zero-width border. Subclasses will
likely want to override this method, but they are not required
to do so.
- paintBorder in interface Border
c - the component whose border is to be painted.g - the graphics for painting.x - the horizontal position for painting the border.y - the vertical position for painting the border.width - the width of the available area for painting the border.height - the height of the available area for painting the border.
AbstractBorder.java --
Copyright (C) 2003, 2006, Free Software Foundation, Inc.
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