- java.lang.Object
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- javax.swing.plaf.ComponentUI
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- javax.swing.plaf.SliderUI
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- javax.swing.plaf.basic.BasicSliderUI
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- Direct Known Subclasses:
- MetalSliderUI, SynthSliderUI
public class BasicSliderUI extends SliderUI
A Basic L&F implementation of SliderUI.
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Nested Class Summary
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.
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Field Summary
Fields Modifier and Type Field and Description protected ChangeListener
changeListener
protected ComponentListener
componentListener
protected Rectangle
contentRect
protected Insets
focusInsets
protected FocusListener
focusListener
protected Rectangle
focusRect
protected Insets
insetCache
protected Rectangle
labelRect
protected boolean
leftToRightCache
static int
MAX_SCROLL
static int
MIN_SCROLL
static int
NEGATIVE_SCROLL
static int
POSITIVE_SCROLL
protected PropertyChangeListener
propertyChangeListener
protected BasicSliderUI.ScrollListener
scrollListener
protected Timer
scrollTimer
protected JSlider
slider
protected Rectangle
thumbRect
protected Rectangle
tickRect
protected int
trackBuffer
protected BasicSliderUI.TrackListener
trackListener
protected Rectangle
trackRect
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Constructor Summary
Constructors Constructor and Description BasicSliderUI(JSlider b)
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Method Summary
Methods Modifier and Type Method and Description protected void
calculateContentRect()
protected void
calculateFocusRect()
protected void
calculateGeometry()
protected void
calculateLabelRect()
protected void
calculateThumbLocation()
protected void
calculateThumbSize()
protected void
calculateTickRect()
protected void
calculateTrackBuffer()
protected void
calculateTrackRect()
protected ChangeListener
createChangeListener(JSlider slider)
protected ComponentListener
createComponentListener(JSlider slider)
protected FocusListener
createFocusListener(JSlider slider)
protected PropertyChangeListener
createPropertyChangeListener(JSlider slider)
protected BasicSliderUI.ScrollListener
createScrollListener(JSlider slider)
protected BasicSliderUI.TrackListener
createTrackListener(JSlider slider)
static ComponentUI
createUI(JComponent b)
protected boolean
drawInverted()
int
getBaseline(JComponent c, int width, int height)
Returns the baseline.Component.BaselineResizeBehavior
getBaselineResizeBehavior(JComponent c)
Returns an enum indicating how the baseline of the component changes as the size changes.protected Color
getFocusColor()
protected int
getHeightOfHighValueLabel()
protected int
getHeightOfLowValueLabel()
protected int
getHeightOfTallestLabel()
protected Integer
getHighestValue()
Returns the biggest value that has an entry in the label table.protected Component
getHighestValueLabel()
Returns the label that corresponds to the lowest slider value in the label table.protected Color
getHighlightColor()
protected Integer
getLowestValue()
Returns the smallest value that has an entry in the label table.protected Component
getLowestValueLabel()
Returns the label that corresponds to the highest slider value in the label table.Dimension
getMaximumSize(JComponent c)
Returns the specified component's maximum size appropriate for the look and feel.Dimension
getMinimumHorizontalSize()
Dimension
getMinimumSize(JComponent c)
Returns the specified component's minimum size appropriate for the look and feel.Dimension
getMinimumVerticalSize()
Dimension
getPreferredHorizontalSize()
Dimension
getPreferredSize(JComponent c)
Returns the specified component's preferred size appropriate for the look and feel.Dimension
getPreferredVerticalSize()
protected Color
getShadowColor()
protected Dimension
getThumbSize()
protected int
getTickLength()
Gets the height of the tick area for horizontal sliders and the width of the tick area for vertical sliders.protected int
getWidthOfHighValueLabel()
protected int
getWidthOfLowValueLabel()
protected int
getWidthOfWidestLabel()
protected void
installDefaults(JSlider slider)
protected void
installKeyboardActions(JSlider slider)
protected void
installListeners(JSlider slider)
void
installUI(JComponent c)
Configures the specified component appropriately for the look and feel.protected boolean
isDragging()
Returns true if the user is dragging the slider.protected boolean
labelsHaveSameBaselines()
Returns true if all the labels from the label table have the same baseline.void
paint(Graphics g, JComponent c)
Paints the specified component appropriately for the look and feel.void
paintFocus(Graphics g)
protected void
paintHorizontalLabel(Graphics g, int value, Component label)
Called for every label in the label table.void
paintLabels(Graphics g)
protected void
paintMajorTickForHorizSlider(Graphics g, Rectangle tickBounds, int x)
protected void
paintMajorTickForVertSlider(Graphics g, Rectangle tickBounds, int y)
protected void
paintMinorTickForHorizSlider(Graphics g, Rectangle tickBounds, int x)
protected void
paintMinorTickForVertSlider(Graphics g, Rectangle tickBounds, int y)
void
paintThumb(Graphics g)
void
paintTicks(Graphics g)
void
paintTrack(Graphics g)
protected void
paintVerticalLabel(Graphics g, int value, Component label)
Called for every label in the label table.protected void
recalculateIfInsetsChanged()
protected void
recalculateIfOrientationChanged()
void
scrollByBlock(int direction)
void
scrollByUnit(int direction)
protected void
scrollDueToClickInTrack(int dir)
This function is called when a mousePressed was detected in the track, not in the thumb.void
setThumbLocation(int x, int y)
protected void
uninstallDefaults(JSlider slider)
protected void
uninstallKeyboardActions(JSlider slider)
protected void
uninstallListeners(JSlider slider)
void
uninstallUI(JComponent c)
Reverses configuration which was done on the specified component duringinstallUI
.int
valueForXPosition(int xPos)
Returns the value at the x position.int
valueForYPosition(int yPos)
Returns the value at the y position.protected int
xPositionForValue(int value)
protected int
yPositionForValue(int value)
protected int
yPositionForValue(int value, int trackY, int trackHeight)
Returns the y location for the specified value.-
Methods inherited from class javax.swing.plaf.ComponentUI
contains, getAccessibleChild, getAccessibleChildrenCount, update
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Field Detail
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POSITIVE_SCROLL
public static final int POSITIVE_SCROLL
- See Also:
- Constant Field Values
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NEGATIVE_SCROLL
public static final int NEGATIVE_SCROLL
- See Also:
- Constant Field Values
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MIN_SCROLL
public static final int MIN_SCROLL
- See Also:
- Constant Field Values
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MAX_SCROLL
public static final int MAX_SCROLL
- See Also:
- Constant Field Values
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scrollTimer
protected Timer scrollTimer
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slider
protected JSlider slider
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focusInsets
protected Insets focusInsets
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insetCache
protected Insets insetCache
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leftToRightCache
protected boolean leftToRightCache
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focusRect
protected Rectangle focusRect
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contentRect
protected Rectangle contentRect
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labelRect
protected Rectangle labelRect
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tickRect
protected Rectangle tickRect
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trackRect
protected Rectangle trackRect
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thumbRect
protected Rectangle thumbRect
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trackBuffer
protected int trackBuffer
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trackListener
protected BasicSliderUI.TrackListener trackListener
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changeListener
protected ChangeListener changeListener
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componentListener
protected ComponentListener componentListener
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focusListener
protected FocusListener focusListener
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scrollListener
protected BasicSliderUI.ScrollListener scrollListener
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propertyChangeListener
protected PropertyChangeListener propertyChangeListener
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Constructor Detail
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BasicSliderUI
public BasicSliderUI(JSlider b)
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Method Detail
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getShadowColor
protected Color getShadowColor()
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getHighlightColor
protected Color getHighlightColor()
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getFocusColor
protected Color getFocusColor()
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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
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createUI
public static ComponentUI createUI(JComponent b)
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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 theComponentUI
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()
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uninstallUI
public void uninstallUI(JComponent c)
Description copied from class:ComponentUI
Reverses configuration which was done on the specified component duringinstallUI
. This method is invoked when thisUIComponent
instance is being removed as the UI delegate for the specified component. This method should undo the configuration performed ininstallUI
, being careful to leave theJComponent
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()
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installDefaults
protected void installDefaults(JSlider slider)
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uninstallDefaults
protected void uninstallDefaults(JSlider slider)
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createTrackListener
protected BasicSliderUI.TrackListener createTrackListener(JSlider slider)
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createChangeListener
protected ChangeListener createChangeListener(JSlider slider)
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createComponentListener
protected ComponentListener createComponentListener(JSlider slider)
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createFocusListener
protected FocusListener createFocusListener(JSlider slider)
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createScrollListener
protected BasicSliderUI.ScrollListener createScrollListener(JSlider slider)
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createPropertyChangeListener
protected PropertyChangeListener createPropertyChangeListener(JSlider slider)
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installListeners
protected void installListeners(JSlider slider)
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uninstallListeners
protected void uninstallListeners(JSlider slider)
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installKeyboardActions
protected void installKeyboardActions(JSlider slider)
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uninstallKeyboardActions
protected void uninstallKeyboardActions(JSlider slider)
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getBaseline
public int getBaseline(JComponent c, int width, int height)
Returns the baseline.- Overrides:
getBaseline
in classComponentUI
- Parameters:
c
-JComponent
baseline is being requested forwidth
- the width to get the baseline forheight
- 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)
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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)
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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
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getPreferredHorizontalSize
public Dimension getPreferredHorizontalSize()
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getPreferredVerticalSize
public Dimension getPreferredVerticalSize()
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getMinimumHorizontalSize
public Dimension getMinimumHorizontalSize()
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getMinimumVerticalSize
public Dimension getMinimumVerticalSize()
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getPreferredSize
public Dimension getPreferredSize(JComponent c)
Description copied from class:ComponentUI
Returns the specified component's preferred size appropriate for the look and feel. Ifnull
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 returnsnull
.- 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)
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getMinimumSize
public Dimension getMinimumSize(JComponent c)
Description copied from class:ComponentUI
Returns the specified component's minimum size appropriate for the look and feel. Ifnull
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 invokesgetPreferredSize
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)
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getMaximumSize
public Dimension getMaximumSize(JComponent c)
Description copied from class:ComponentUI
Returns the specified component's maximum size appropriate for the look and feel. Ifnull
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 invokesgetPreferredSize
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)
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calculateGeometry
protected void calculateGeometry()
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calculateFocusRect
protected void calculateFocusRect()
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calculateThumbSize
protected void calculateThumbSize()
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calculateContentRect
protected void calculateContentRect()
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calculateThumbLocation
protected void calculateThumbLocation()
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calculateTrackBuffer
protected void calculateTrackBuffer()
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calculateTrackRect
protected void calculateTrackRect()
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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().
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calculateTickRect
protected void calculateTickRect()
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calculateLabelRect
protected void calculateLabelRect()
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getThumbSize
protected Dimension getThumbSize()
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getWidthOfWidestLabel
protected int getWidthOfWidestLabel()
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getHeightOfTallestLabel
protected int getHeightOfTallestLabel()
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getWidthOfHighValueLabel
protected int getWidthOfHighValueLabel()
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getWidthOfLowValueLabel
protected int getWidthOfLowValueLabel()
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getHeightOfHighValueLabel
protected int getHeightOfHighValueLabel()
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getHeightOfLowValueLabel
protected int getHeightOfLowValueLabel()
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drawInverted
protected boolean drawInverted()
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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
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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
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getLowestValueLabel
protected Component getLowestValueLabel()
Returns the label that corresponds to the highest slider value in the label table.
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getHighestValueLabel
protected Component getHighestValueLabel()
Returns the label that corresponds to the lowest slider value in the label table.
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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 theComponentUI.update
method when the specified component is being painted. Subclasses should override this method and use the specifiedGraphics
object to render the content of the component.- Overrides:
paint
in classComponentUI
- Parameters:
g
- theGraphics
context in which to paintc
- 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)
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recalculateIfInsetsChanged
protected void recalculateIfInsetsChanged()
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recalculateIfOrientationChanged
protected void recalculateIfOrientationChanged()
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paintFocus
public void paintFocus(Graphics g)
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paintTrack
public void paintTrack(Graphics g)
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paintTicks
public void paintTicks(Graphics g)
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paintMinorTickForHorizSlider
protected void paintMinorTickForHorizSlider(Graphics g, Rectangle tickBounds, int x)
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paintMajorTickForHorizSlider
protected void paintMajorTickForHorizSlider(Graphics g, Rectangle tickBounds, int x)
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paintMinorTickForVertSlider
protected void paintMinorTickForVertSlider(Graphics g, Rectangle tickBounds, int y)
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paintMajorTickForVertSlider
protected void paintMajorTickForVertSlider(Graphics g, Rectangle tickBounds, int y)
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paintLabels
public void paintLabels(Graphics g)
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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.
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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.
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paintThumb
public void paintThumb(Graphics g)
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setThumbLocation
public void setThumbLocation(int x, int y)
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scrollByBlock
public void scrollByBlock(int direction)
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scrollByUnit
public void scrollByUnit(int direction)
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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.
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xPositionForValue
protected int xPositionForValue(int value)
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yPositionForValue
protected int yPositionForValue(int value)
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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 iftrackHeight
is negative undefined results may occur.- Parameters:
value
- the slider value to get the location fortrackY
- y-origin of the tracktrackHeight
- the height of the track- Since:
- 1.6
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valueForYPosition
public int valueForYPosition(int yPos)
Returns the value at the y position. IfyPos
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.
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valueForXPosition
public int valueForXPosition(int xPos)
Returns the value at the x position. IfxPos
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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Source du document imprimé : https://www.gaudry.be/java-api-rf-javax/swing/plaf/basic/BasicSliderUI.html
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