BasicSliderUI
Class BasicSliderUI
- java.lang.Object
-
- javax.swing.plaf.ComponentUI
-
- javax.swing.plaf.SliderUI
-
- javax.swing.plaf.basic.BasicSliderUI
- Direct Known Subclasses:
- MetalSliderUI, SynthSliderUI
public class BasicSliderUI extends SliderUI
A Basic L&F implementation of SliderUI.
Nested Classes
Modifier and Type | Class and Description |
---|---|
class |
BasicSliderUI.ActionScroller As of Java 2 platform v1.3 this undocumented class is no longer used. |
class |
BasicSliderUI.ChangeHandler Data model listener. |
class |
BasicSliderUI.ComponentHandler Listener for resizing events. |
class |
BasicSliderUI.FocusHandler Focus-change listener. |
class |
BasicSliderUI.PropertyChangeHandler |
class |
BasicSliderUI.ScrollListener Scroll-event listener. |
class |
BasicSliderUI.TrackListener Track mouse movements. |
Fields
POSITIVE_SCROLL
public static final int POSITIVE_SCROLL
NEGATIVE_SCROLL
public static final int NEGATIVE_SCROLL
MIN_SCROLL
public static final int MIN_SCROLL
MAX_SCROLL
public static final int MAX_SCROLL
scrollTimer
protected Timer scrollTimer
slider
protected JSlider slider
focusInsets
protected Insets focusInsets
insetCache
protected Insets insetCache
leftToRightCache
protected boolean leftToRightCache
focusRect
protected Rectangle focusRect
contentRect
protected Rectangle contentRect
labelRect
protected Rectangle labelRect
tickRect
protected Rectangle tickRect
trackRect
protected Rectangle trackRect
thumbRect
protected Rectangle thumbRect
trackBuffer
protected int trackBuffer
trackListener
protected BasicSliderUI.TrackListener trackListener
changeListener
protected ChangeListener changeListener
componentListener
protected ComponentListener componentListener
focusListener
protected FocusListener focusListener
scrollListener
protected BasicSliderUI.ScrollListener scrollListener
propertyChangeListener
protected PropertyChangeListener propertyChangeListener
Constructors
BasicSliderUI
public BasicSliderUI(JSlider b)
Methods
getShadowColor
protected Color getShadowColor()
getHighlightColor
protected Color getHighlightColor()
getFocusColor
protected Color getFocusColor()
isDragging
protected boolean isDragging()
Returns true if the user is dragging the slider.
- Returns:
- true if the user is dragging the slider
- Since:
- 1.5
createUI
public static ComponentUI createUI(JComponent b)
installUI
public void installUI(JComponent c)
Description copied from class: ComponentUI
Configures the specified component appropriately for the look and feel. This method is invoked when the ComponentUI
instance is being installed as the UI delegate on the specified component. This method should completely configure the component for the look and feel, including the following:
- Install default property values for color, fonts, borders, icons, opacity, etc. on the component. Whenever possible, property values initialized by the client program should not be overridden.
- Install a
LayoutManager
on the component if necessary. - Create/add any required sub-components to the component.
- Create/install event listeners on the component.
- Create/install a
PropertyChangeListener
on the component in order to detect and respond to component property changes appropriately. - Install keyboard UI (mnemonics, traversal, etc.) on the component.
- Initialize any appropriate instance data.
- Overrides:
-
installUI
in classComponentUI
- Parameters:
-
c
- the component where this UI delegate is being installed - See Also:
-
ComponentUI.uninstallUI(javax.swing.JComponent)
,JComponent.setUI(javax.swing.plaf.ComponentUI)
,JComponent.updateUI()
uninstallUI
public void uninstallUI(JComponent c)
Description copied from class: ComponentUI
Reverses configuration which was done on the specified component during installUI
. This method is invoked when this UIComponent
instance is being removed as the UI delegate for the specified component. This method should undo the configuration performed in installUI
, being careful to leave the JComponent
instance in a clean state (no extraneous listeners, look-and-feel-specific property objects, etc.). This should include the following:
- Remove any UI-set borders from the component.
- Remove any UI-set layout managers on the component.
- Remove any UI-added sub-components from the component.
- Remove any UI-added event/property listeners from the component.
- Remove any UI-installed keyboard UI from the component.
- Nullify any allocated instance data objects to allow for GC.
- Overrides:
-
uninstallUI
in classComponentUI
- Parameters:
-
c
- the component from which this UI delegate is being removed; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components - See Also:
-
ComponentUI.installUI(javax.swing.JComponent)
,JComponent.updateUI()
installDefaults
protected void installDefaults(JSlider slider)
uninstallDefaults
protected void uninstallDefaults(JSlider slider)
createTrackListener
protected BasicSliderUI.TrackListener createTrackListener(JSlider slider)
createChangeListener
protected ChangeListener createChangeListener(JSlider slider)
createComponentListener
protected ComponentListener createComponentListener(JSlider slider)
createFocusListener
protected FocusListener createFocusListener(JSlider slider)
createScrollListener
protected BasicSliderUI.ScrollListener createScrollListener(JSlider slider)
createPropertyChangeListener
protected PropertyChangeListener createPropertyChangeListener(JSlider slider)
installListeners
protected void installListeners(JSlider slider)
uninstallListeners
protected void uninstallListeners(JSlider slider)
installKeyboardActions
protected void installKeyboardActions(JSlider slider)
uninstallKeyboardActions
protected void uninstallKeyboardActions(JSlider slider)
getBaseline
public int getBaseline(JComponent c, int width, int height)
Returns the baseline.
- Overrides:
-
getBaseline
in classComponentUI
- 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
- ifc
isnull
-
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 classComponentUI
- Parameters:
-
c
-JComponent
to return baseline resize behavior for - Returns:
- an enum indicating how the baseline changes as the component size changes
- Throws:
-
NullPointerException
- ifc
isnull
- Since:
- 1.6
- See Also:
JComponent.getBaseline(int, int)
labelsHaveSameBaselines
protected boolean labelsHaveSameBaselines()
Returns true if all the labels from the label table have the same baseline.
- Returns:
- true if all the labels from the label table have the same baseline
- Since:
- 1.6
getPreferredHorizontalSize
public Dimension getPreferredHorizontalSize()
getPreferredVerticalSize
public Dimension getPreferredVerticalSize()
getMinimumHorizontalSize
public Dimension getMinimumHorizontalSize()
getMinimumVerticalSize
public Dimension getMinimumVerticalSize()
getPreferredSize
public Dimension getPreferredSize(JComponent c)
Description copied from class: ComponentUI
Returns the specified component's preferred size appropriate for the look and feel. If null
is returned, the preferred size will be calculated by the component's layout manager instead (this is the preferred approach for any component with a specific layout manager installed). The default implementation of this method returns null
.
- Overrides:
-
getPreferredSize
in classComponentUI
- Parameters:
-
c
- the component whose preferred size is being queried; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components - See Also:
-
JComponent.getPreferredSize()
,LayoutManager.preferredLayoutSize(java.awt.Container)
getMinimumSize
public Dimension getMinimumSize(JComponent c)
Description copied from class: ComponentUI
Returns the specified component's minimum size appropriate for the look and feel. If null
is returned, the minimum size will be calculated by the component's layout manager instead (this is the preferred approach for any component with a specific layout manager installed). The default implementation of this method invokes getPreferredSize
and returns that value.
- Overrides:
-
getMinimumSize
in classComponentUI
- Parameters:
-
c
- the component whose minimum size is being queried; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components - Returns:
- a
Dimension
object ornull
- See Also:
-
JComponent.getMinimumSize()
,LayoutManager.minimumLayoutSize(java.awt.Container)
,ComponentUI.getPreferredSize(javax.swing.JComponent)
getMaximumSize
public Dimension getMaximumSize(JComponent c)
Description copied from class: ComponentUI
Returns the specified component's maximum size appropriate for the look and feel. If null
is returned, the maximum size will be calculated by the component's layout manager instead (this is the preferred approach for any component with a specific layout manager installed). The default implementation of this method invokes getPreferredSize
and returns that value.
- Overrides:
-
getMaximumSize
in classComponentUI
- Parameters:
-
c
- the component whose maximum size is being queried; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components - Returns:
- a
Dimension
object ornull
- See Also:
-
JComponent.getMaximumSize()
,LayoutManager2.maximumLayoutSize(java.awt.Container)
calculateGeometry
protected void calculateGeometry()
calculateFocusRect
protected void calculateFocusRect()
calculateThumbSize
protected void calculateThumbSize()
calculateContentRect
protected void calculateContentRect()
calculateThumbLocation
protected void calculateThumbLocation()
calculateTrackBuffer
protected void calculateTrackBuffer()
calculateTrackRect
protected void calculateTrackRect()
getTickLength
protected int getTickLength()
Gets the height of the tick area for horizontal sliders and the width of the tick area for vertical sliders. BasicSliderUI uses the returned value to determine the tick area rectangle. If you want to give your ticks some room, make this larger than you need and paint your ticks away from the sides in paintTicks().
calculateTickRect
protected void calculateTickRect()
calculateLabelRect
protected void calculateLabelRect()
getThumbSize
protected Dimension getThumbSize()
getWidthOfWidestLabel
protected int getWidthOfWidestLabel()
getHeightOfTallestLabel
protected int getHeightOfTallestLabel()
getWidthOfHighValueLabel
protected int getWidthOfHighValueLabel()
getWidthOfLowValueLabel
protected int getWidthOfLowValueLabel()
getHeightOfHighValueLabel
protected int getHeightOfHighValueLabel()
getHeightOfLowValueLabel
protected int getHeightOfLowValueLabel()
drawInverted
protected boolean drawInverted()
getHighestValue
protected Integer getHighestValue()
Returns the biggest value that has an entry in the label table.
- Returns:
- biggest value that has an entry in the label table, or null.
- Since:
- 1.6
getLowestValue
protected Integer getLowestValue()
Returns the smallest value that has an entry in the label table.
- Returns:
- smallest value that has an entry in the label table, or null.
- Since:
- 1.6
getLowestValueLabel
protected Component getLowestValueLabel()
Returns the label that corresponds to the highest slider value in the label table.
getHighestValueLabel
protected Component getHighestValueLabel()
Returns the label that corresponds to the lowest slider value in the label table.
paint
public void paint(Graphics g, JComponent c)
Description copied from class: ComponentUI
Paints the specified component appropriately for the look and feel. This method is invoked from the ComponentUI.update
method when the specified component is being painted. Subclasses should override this method and use the specified Graphics
object to render the content of the component.
- Overrides:
-
paint
in classComponentUI
- Parameters:
-
g
- theGraphics
context in which to paint -
c
- the component being painted; this argument is often ignored, but might be used if the UI object is stateless and shared by multiple components - See Also:
ComponentUI.update(java.awt.Graphics, javax.swing.JComponent)
recalculateIfInsetsChanged
protected void recalculateIfInsetsChanged()
recalculateIfOrientationChanged
protected void recalculateIfOrientationChanged()
paintFocus
public void paintFocus(Graphics g)
paintTrack
public void paintTrack(Graphics g)
paintTicks
public void paintTicks(Graphics g)
paintMinorTickForHorizSlider
protected void paintMinorTickForHorizSlider(Graphics g, Rectangle tickBounds, int x)
paintMajorTickForHorizSlider
protected void paintMajorTickForHorizSlider(Graphics g, Rectangle tickBounds, int x)
paintMinorTickForVertSlider
protected void paintMinorTickForVertSlider(Graphics g, Rectangle tickBounds, int y)
paintMajorTickForVertSlider
protected void paintMajorTickForVertSlider(Graphics g, Rectangle tickBounds, int y)
paintLabels
public void paintLabels(Graphics g)
paintHorizontalLabel
protected void paintHorizontalLabel(Graphics g, int value, Component label)
Called for every label in the label table. Used to draw the labels for horizontal sliders. The graphics have been translated to labelRect.y already.
paintVerticalLabel
protected void paintVerticalLabel(Graphics g, int value, Component label)
Called for every label in the label table. Used to draw the labels for vertical sliders. The graphics have been translated to labelRect.x already.
paintThumb
public void paintThumb(Graphics g)
setThumbLocation
public void setThumbLocation(int x, int y)
scrollByBlock
public void scrollByBlock(int direction)
scrollByUnit
public void scrollByUnit(int direction)
scrollDueToClickInTrack
protected void scrollDueToClickInTrack(int dir)
This function is called when a mousePressed was detected in the track, not in the thumb. The default behavior is to scroll by block. You can override this method to stop it from scrolling or to add additional behavior.
xPositionForValue
protected int xPositionForValue(int value)
yPositionForValue
protected int yPositionForValue(int value)
yPositionForValue
protected int yPositionForValue(int value, int trackY, int trackHeight)
Returns the y location for the specified value. No checking is done on the arguments. In particular if trackHeight
is negative undefined results may occur.
- Parameters:
-
value
- the slider value to get the location for -
trackY
- y-origin of the track -
trackHeight
- the height of the track - Since:
- 1.6
valueForYPosition
public int valueForYPosition(int yPos)
Returns the value at the y position. If yPos
is beyond the track at the the bottom or the top, this method sets the value to either the minimum or maximum value of the slider, depending on if the slider is inverted or not.
valueForXPosition
public int valueForXPosition(int xPos)
Returns the value at the x position. If xPos
is beyond the track at the left or the right, this method sets the value to either the minimum or maximum value of the slider, depending on if the slider is inverted or not.
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