A SynthStyle implementation used by Nimbus. Each Region that has been registered with the NimbusLookAndFeel will have an associated NimbusStyle. Third party components that are registered with the NimbusLookAndFeel will therefore be handed a NimbusStyle from the look and feel from the #getStyle(JComponent, Region) method.
This class properly reads and retrieves values placed in the UIDefaults according to the standard Nimbus naming conventions. It will create and retrieve painters, fonts, colors, and other data stored there.
NimbusStyle also supports the ability to override settings on a per component basis. NimbusStyle checks the component's client property map for "Nimbus.Overrides". If the value associated with this key is an instance of UIDefaults, then the values in that defaults table will override the standard Nimbus defaults in UIManager, but for that component instance only.
Optionally, you may specify the client property "Nimbus.Overrides.InheritDefaults". If true, this client property indicates that the defaults located in UIManager should first be read, and then replaced with defaults located in the component client properties. If false, then only the defaults located in the component client property map will be used. If not specified, it is assumed to be true.
You must specify "Nimbus.Overrides" for "Nimbus.Overrides.InheritDefaults" to have any effect. "Nimbus.Overrides" indicates whether there are any overrides, while "Nimbus.Overrides.InheritDefaults" indicates whether those overrides should first be initialized with the defaults from UIManager.
The NimbusStyle is reloaded whenever a property change event is fired for a component for "Nimbus.Overrides" or "Nimbus.Overrides.InheritDefaults". So for example, setting a new UIDefaults on a component would cause the style to be reloaded.
The values are only read out of UIManager once, and then cached. If you need to read the values again (for example, if the UI is being reloaded), then discard this NimbusStyle and read a new one from NimbusLookAndFeel using NimbusLookAndFeel.getStyle.
The primary API of interest in this class for 3rd party component authors are the three methods which retrieve painters: #getBackgroundPainter, #getForegroundPainter, and #getBorderPainter.
NimbusStyle allows you to specify custom states, or modify the order of states. Synth (and thus Nimbus) has the concept of a "state". For example, a JButton might be in the "MOUSE_OVER" state, or the "ENABLED" state, or the "DISABLED" state. These are all "standard" states which are defined in synth, and which apply to all synth Regions.
Sometimes, however, you need to have a custom state. For example, you want JButton to render differently if it's parent is a JToolbar. In Nimbus, you specify these custom states by including a special key in UIDefaults. The following UIDefaults entries define three states for this button:
JButton.States = Enabled, Disabled, Toolbar
JButton[Enabled].backgroundPainter = somePainter
JButton[Disabled].background = BLUE
JButton[Toolbar].backgroundPainter = someOtherPaint
As you can see, the JButton.States
entry lists the states
that the JButton style will support. You then specify the settings for
each state. If you do not specify the JButton.States
entry,
then the standard Synth states will be assumed. If you specify the entry
but the list of states is empty or null, then the standard synth states
will be assumed.
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Field Summary
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Method Summary
Modifier and TypeMethodDescriptionget
(SynthContext ctx, Object key) Getter for a region specific style property.Gets the appropriate background Painter, if there is one, for the state specified in the given SynthContext.Gets the appropriate border Painter, if there is one, for the state specified in the given SynthContext.protected Color
getColorForState
(SynthContext ctx, ColorType type) Returns the color for the specified state.protected Font
Returns the font for the specified state.Gets the appropriate foreground Painter, if there is one, for the state specified in the given SynthContext.getInsets
(SynthContext ctx, Insets in) Returns the Insets that are used to calculate sizing information.getPainter
(SynthContext ctx) Returns theSynthPainter
that will be used for painting.void
Installs the necessary state from this Style on theJComponent
fromcontext
.boolean
isOpaque
(SynthContext ctx) Returns true if the region is opaque.Methods declared in class javax.swing.plaf.synth.SynthStyle
getBoolean, getColor, getFont, getGraphicsUtils, getIcon, getInt, getString, uninstallDefaults
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Field Details
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LARGE_KEY
Large key- See Also:
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SMALL_KEY
Small key- See Also:
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MINI_KEY
Mini key- See Also:
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LARGE_SCALE
public static final double LARGE_SCALELarge scale- See Also:
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SMALL_SCALE
public static final double SMALL_SCALESmall scale- See Also:
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MINI_SCALE
public static final double MINI_SCALEMini scale- See Also:
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Method Details
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installDefaults
Installs the necessary state from this Style on theJComponent
fromcontext
. Overridden to cause this style to populate itself with data from UIDefaults, if necessary.- Overrides:
installDefaults
in classSynthStyle
- Parameters:
ctx
- SynthContext identifying component to install properties to.
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getInsets
Returns the Insets that are used to calculate sizing information. Overridden to cause this style to populate itself with data from UIDefaults, if necessary.- Overrides:
getInsets
in classSynthStyle
- Parameters:
ctx
- SynthContext identifying requesterin
- Insets to place return value in.- Returns:
- Sizing Insets.
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getColorForState
Returns the color for the specified state. This should NOT call any methods on theJComponent
.Overridden to cause this style to populate itself with data from UIDefaults, if necessary.
In addition, NimbusStyle handles ColorTypes slightly differently from Synth.
- ColorType.BACKGROUND will equate to the color stored in UIDefaults named "background".
- ColorType.TEXT_BACKGROUND will equate to the color stored in UIDefaults named "textBackground".
- ColorType.FOREGROUND will equate to the color stored in UIDefaults named "textForeground".
- ColorType.TEXT_FOREGROUND will equate to the color stored in UIDefaults named "textForeground".
- Specified by:
getColorForState
in classSynthStyle
- Parameters:
ctx
- SynthContext identifying requestertype
- Type of color being requested.- Returns:
- Color to render with
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getFontForState
Returns the font for the specified state. This should NOT call any method on theJComponent
. Overridden to cause this style to populate itself with data from UIDefaults, if necessary. If a value named "font" is not found in UIDefaults, then the "defaultFont" font in UIDefaults will be returned instead.- Specified by:
getFontForState
in classSynthStyle
- Parameters:
ctx
- SynthContext identifying requester- Returns:
- Font to render with
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getPainter
Returns theSynthPainter
that will be used for painting. This may return null. Returns the SynthPainter for this style, which ends up delegating to the Painters installed in this style.- Overrides:
getPainter
in classSynthStyle
- Parameters:
ctx
- SynthContext identifying requester- Returns:
- SynthPainter to use
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isOpaque
Returns true if the region is opaque. Overridden to cause this style to populate itself with data from UIDefaults, if necessary. If opacity is not specified in UI defaults, then it defaults to being non-opaque.- Overrides:
isOpaque
in classSynthStyle
- Parameters:
ctx
- SynthContext identifying requester- Returns:
- true if region is opaque.
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get
Getter for a region specific style property.Overridden to cause this style to populate itself with data from UIDefaults, if necessary.
Properties in UIDefaults may be specified in a chained manner. For example:
background Button.opacity Button.Enabled.foreground Button.Enabled+Selected.background
In this example, suppose you were in the Enabled+Selected state and searched for "foreground". In this case, we first check for Button.Enabled+Selected.foreground, but no such color exists. We then fall back to the next valid state, in this case, Button.Enabled.foreground, and have a match. So we return it.
Again, if we were in the state Enabled and looked for "background", we wouldn't find it in Button.Enabled, or in Button, but would at the top level in UIManager. So we return that value.
One special note: the "key" passed to this method could be of the form "background" or "Button.background" where "Button" equals the prefix passed to the NimbusStyle constructor. In either case, it looks for "background".
- Overrides:
get
in classSynthStyle
- Parameters:
ctx
- SynthContext identifying requesterkey
- must not be null- Returns:
- Value of the named property
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getBackgroundPainter
Gets the appropriate background Painter, if there is one, for the state specified in the given SynthContext. This method does appropriate fallback searching, as described in #get.- Parameters:
ctx
- The SynthContext. Must not be null.- Returns:
- The background painter associated for the given state, or null if none could be found.
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getForegroundPainter
Gets the appropriate foreground Painter, if there is one, for the state specified in the given SynthContext. This method does appropriate fallback searching, as described in #get.- Parameters:
ctx
- The SynthContext. Must not be null.- Returns:
- The foreground painter associated for the given state, or null if none could be found.
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getBorderPainter
Gets the appropriate border Painter, if there is one, for the state specified in the given SynthContext. This method does appropriate fallback searching, as described in #get.- Parameters:
ctx
- The SynthContext. Must not be null.- Returns:
- The border painter associated for the given state, or null if none could be found.
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