Class BasicButtonUI

protected int defaultTextIconGap

A constant used to pad out elements in the button's layout and preferred size calculations.

protected int defaultTextShiftOffset

A constant added to the defaultTextIconGap to adjust the text within this particular button.

protected void clearTextShiftOffset()

Sets the text shift offset to zero.

See Also:

setTextShiftOffset()

protected BasicButtonListener createButtonListener(AbstractButton b)

Creates and returns a new instance of BasicButtonListener. This method provides a hook to make it easy for subclasses to install a different listener.

Parameters:

b - the button.

Returns:

A new listener.

public static ComponentUI createUI(JComponent c)

Factory method to create an instance of BasicButtonUI for a given JComponent, which should be an AbstractButton.

Overrides:

createUI in interface ComponentUI

Parameters:

c - The component.

Returns:

A new UI capable of drawing the component

public int getDefaultTextIconGap(AbstractButton b)

Returns the default gap between the button's text and icon (in pixels).

Parameters:

b - the button (ignored).

Returns:

The gap.

public Dimension getMaximumSize(JComponent c)

Calculates the maximum size for the specified component.

Overrides:

getMaximumSize in interface ComponentUI

Parameters:

c - the component for which to compute the maximum size

Returns:

the maximum size for the specified component

public Dimension getMinimumSize(JComponent c)

Calculates the minimum size for the specified component.

Overrides:

getMinimumSize in interface ComponentUI

Parameters:

c - the component for which to compute the minimum size

Returns:

the minimum size for the specified component

public Dimension getPreferredSize(JComponent c)

Calculate the preferred size of this component, by delegating to BasicGraphicsUtils.getPreferredButtonSize(AbstractButton,int).

Overrides:

getPreferredSize in interface ComponentUI

Parameters:

c - The component to measure

Returns:

The preferred dimensions of the component

protected String getPropertyPrefix()

Returns the prefix for the UI defaults property for this UI class. This is 'Button' for this class.

Returns:

the prefix for the UI defaults property

protected int getTextShiftOffset()

Returns the text shift offset.

Returns:

The text shift offset.

See Also:

clearTextShiftOffset(), setTextShiftOffset()

protected void installDefaults(AbstractButton b)

Installs the default settings.

Parameters:

b - the button (null not permitted).

protected void installKeyboardActions(AbstractButton b)

protected void installListeners(AbstractButton b)

Installs listeners for the button.

Parameters:

b - the button (null not permitted).

public void installUI(JComponent c)

Install the BasicButtonUI as the UI for a particular component. This means registering all the UI's listeners with the component, and setting any properties of the button which are particular to this look and feel.

Overrides:

installUI in interface ComponentUI

Parameters:

c - The component to install the UI into

public void paint(Graphics g,
                  JComponent c)

Paint the component, which is an AbstractButton, according to its current state.

Overrides:

paint in interface ComponentUI

Parameters:

g - The graphics context to paint with

c - The component to paint the state of

protected void paintButtonPressed(Graphics g,
                                  AbstractButton b)

Paints the background area of an AbstractButton in the pressed state. This means filling the supplied area with a darker than normal background.

Parameters:

g - The graphics context to paint with

b - The button to paint the state of

protected void paintFocus(Graphics g,
                          AbstractButton b,
                          Rectangle vr,
                          Rectangle tr,
                          Rectangle ir)

Paint any focus decoration this JComponent might have. The component, which in this case will be an AbstractButton, should only have focus decoration painted if it has the focus, and its "focusPainted" property is true.

Parameters:

g - Graphics context to paint with

b - Button to paint the focus of

vr - Visible rectangle, the area in which to paint

tr - Text rectangle, contained in visible rectangle

ir - Icon rectangle, contained in visible rectangle

See Also:

AbstractButton.isFocusPainted(), JComponent.hasFocus()

protected void paintIcon(Graphics g,
                         JComponent c,
                         Rectangle iconRect)

Paint the icon for this component. Depending on the state of the component and the availability of the button's various icon properties, this might mean painting one of several different icons.

Parameters:

g - Graphics context to paint with

c - Component to paint the icon of

iconRect - Rectangle in which the icon should be painted

protected void paintText(Graphics g,
                         AbstractButton b,
                         Rectangle textRect,
                         String text)

Paints the "text" property of an AbstractButton.

Parameters:

g - The graphics context to paint with

b - The button to paint the state of

textRect - The area in which to paint the text

text - The text to paint

Since:

1.4

protected void paintText(Graphics g,
                         JComponent c,
                         Rectangle textRect,
                         String text)

Paints the "text" property of an AbstractButton.

Parameters:

g - The graphics context to paint with

c - The component to paint the state of

textRect - The area in which to paint the text

text - The text to paint

protected void setTextShiftOffset()

Sets the text shift offset to the value in defaultTextShiftOffset.

See Also:

clearTextShiftOffset()

protected void uninstallDefaults(AbstractButton b)

Removes the defaults added by installDefaults(AbstractButton).

Parameters:

b - the button (null not permitted).

protected void uninstallKeyboardActions(AbstractButton b)

protected void uninstallListeners(AbstractButton b)

Uninstalls listeners for the button.

Parameters:

b - the button (null not permitted).

public void uninstallUI(JComponent c)

Uninstalls the UI from the component.

Overrides:

uninstallUI in interface ComponentUI

Parameters:

c - the component from which to uninstall the UI