Module java.desktop
Package javax.swing.plaf.basic

Class BasicButtonUI

java.lang.Object
javax.swing.plaf.ComponentUI
javax.swing.plaf.ButtonUI
javax.swing.plaf.basic.BasicButtonUI
Direct Known Subclasses:
BasicToggleButtonUI, MetalButtonUI, SynthButtonUI
public class BasicButtonUI extends ButtonUI
BasicButton implementation

  • Field Details

    • defaultTextIconGap

      protected int defaultTextIconGap
      The default gap between a text and an icon.

    • defaultTextShiftOffset

      protected int defaultTextShiftOffset
      The default offset of a text.

  • Constructor Details

    • BasicButtonUI

      public BasicButtonUI()
      Constructs a BasicButtonUI.

  • Method Details

    • createUI

      public static ComponentUI createUI​(JComponent c)
      Returns an instance of BasicButtonUI.
      Parameters:
      c - a component
      Returns:
      an instance of BasicButtonUI

    • getPropertyPrefix

      protected String getPropertyPrefix()
      Returns the property prefix.
      Returns:
      the property prefix

    • installDefaults

      protected void installDefaults​(AbstractButton b)
      Installs default properties.
      Parameters:
      b - an abstract button

    • installListeners

      protected void installListeners​(AbstractButton b)
      Registers listeners.
      Parameters:
      b - an abstract button

    • installKeyboardActions

      protected void installKeyboardActions​(AbstractButton b)
      Registers keyboard actions.
      Parameters:
      b - an abstract button

    • uninstallKeyboardActions

      protected void uninstallKeyboardActions​(AbstractButton b)
      Unregisters keyboard actions.
      Parameters:
      b - an abstract button

    • uninstallListeners

      protected void uninstallListeners​(AbstractButton b)
      Unregisters listeners.
      Parameters:
      b - an abstract button

    • uninstallDefaults

      protected void uninstallDefaults​(AbstractButton b)
      Uninstalls default properties.
      Parameters:
      b - an abstract button

    • createButtonListener

      protected BasicButtonListener createButtonListener​(AbstractButton b)
      Returns a new instance of BasicButtonListener.
      Parameters:
      b - an abstract button
      Returns:
      a new instance of BasicButtonListener

    • getDefaultTextIconGap

      public int getDefaultTextIconGap​(AbstractButton b)
      Returns the default gap between a text and an icon.
      Parameters:
      b - an abstract button
      Returns:
      the default gap between text and an icon

    • paintIcon

      protected void paintIcon​(Graphics g, JComponent c, Rectangle iconRect)
      Paints an icon of the current button.
      Parameters:
      g - an instance of Graphics
      c - a component
      iconRect - a bounding rectangle to render the icon

    • paintText

      protected void paintText​(Graphics g, JComponent c, Rectangle textRect, String text)
      Method which renders the text of the current button. As of Java 2 platform v 1.4 this method should not be used or overriden. Use the paintText method which takes the AbstractButton argument.
      Parameters:
      g - an instance of Graphics
      c - a component
      textRect - a bounding rectangle to render the text
      text - a string to render

    • paintText

      protected void paintText​(Graphics g, AbstractButton b, Rectangle textRect, String text)
      Method which renders the text of the current button.
      Parameters:
      g - Graphics context
      b - Current button to render
      textRect - Bounding rectangle to render the text
      text - String to render
      Since:
      1.4

    • paintFocus

      protected void paintFocus​(Graphics g, AbstractButton b, Rectangle viewRect, Rectangle textRect, Rectangle iconRect)
      Paints a focused button.
      Parameters:
      g - an instance of Graphics
      b - an abstract button
      viewRect - a bounding rectangle to render the button
      textRect - a bounding rectangle to render the text
      iconRect - a bounding rectangle to render the icon

    • paintButtonPressed

      protected void paintButtonPressed​(Graphics g, AbstractButton b)
      Paints a pressed button.
      Parameters:
      g - an instance of Graphics
      b - an abstract button

    • clearTextShiftOffset

      protected void clearTextShiftOffset()
      Clears the offset of the text.

    • setTextShiftOffset

      protected void setTextShiftOffset()
      Sets the offset of the text.

    • getTextShiftOffset

      protected int getTextShiftOffset()
      Returns the offset of the text.
      Returns:
      the offset of the text

    • getBaseline

      public int getBaseline​(JComponent c, int width, int height)
      Returns the baseline.
      Overrides:
      getBaseline in class ComponentUI
      Parameters:
      c - JComponent baseline is being requested for
      width - the width to get the baseline for
      height - the height to get the baseline for
      Returns:
      baseline or a value < 0 indicating there is no reasonable baseline
      Throws:
      NullPointerException - if c is null
      IllegalArgumentException - if width or height is < 0
      Since:
      1.6
      See Also:
      JComponent.getBaseline(int, int)

    • getBaselineResizeBehavior

      public Component.BaselineResizeBehavior getBaselineResizeBehavior​(JComponent c)
      Returns an enum indicating how the baseline of the component changes as the size changes.
      Overrides:
      getBaselineResizeBehavior in class ComponentUI
      Parameters:
      c - JComponent to return baseline resize behavior for
      Returns:
      an enum indicating how the baseline changes as the component size changes
      Throws:
      NullPointerException - if c is null
      Since:
      1.6
      See Also:
      JComponent.getBaseline(int, int)