Package com.formdev.flatlaf.ui

Class FlatTabbedPaneUI

    • Field Detail

      • TAB_TYPE_UNDERLINED

        protected static final int TAB_TYPE_UNDERLINED
        Since:
        2
        See Also:
        Constant Field Values

      • focusForwardTraversalKeys

        private static java.util.Set<javax.swing.KeyStroke> focusForwardTraversalKeys

      • focusBackwardTraversalKeys

        private static java.util.Set<javax.swing.KeyStroke> focusBackwardTraversalKeys

      • foreground

        protected java.awt.Color foreground

      • disabledForeground

        protected java.awt.Color disabledForeground

      • selectedBackground

        protected java.awt.Color selectedBackground

      • selectedForeground

        protected java.awt.Color selectedForeground

      • underlineColor

        protected java.awt.Color underlineColor

      • inactiveUnderlineColor

        protected java.awt.Color inactiveUnderlineColor
        Since:
        2.2

      • disabledUnderlineColor

        protected java.awt.Color disabledUnderlineColor

      • hoverColor

        protected java.awt.Color hoverColor

      • hoverForeground

        protected java.awt.Color hoverForeground
        Since:
        3.1

      • focusColor

        protected java.awt.Color focusColor

      • focusForeground

        protected java.awt.Color focusForeground
        Since:
        3.1

      • tabSeparatorColor

        protected java.awt.Color tabSeparatorColor

      • contentAreaColor

        protected java.awt.Color contentAreaColor

      • textIconGapUnscaled

        private int textIconGapUnscaled

      • minimumTabWidth

        protected int minimumTabWidth

      • maximumTabWidth

        protected int maximumTabWidth

      • tabHeight

        protected int tabHeight

      • tabSelectionHeight

        protected int tabSelectionHeight

      • cardTabSelectionHeight

        protected int cardTabSelectionHeight
        Since:
        2

      • tabArc

        protected int tabArc
        Since:
        3.2

      • tabSelectionArc

        protected int tabSelectionArc
        Since:
        3.2

      • cardTabArc

        protected int cardTabArc
        Since:
        3.2

      • selectedInsets

        protected java.awt.Insets selectedInsets
        Since:
        3.2

      • tabSelectionInsets

        protected java.awt.Insets tabSelectionInsets
        Since:
        3.2

      • contentSeparatorHeight

        protected int contentSeparatorHeight

      • showTabSeparators

        protected boolean showTabSeparators

      • tabSeparatorsFullHeight

        protected boolean tabSeparatorsFullHeight

      • hasFullBorder

        protected boolean hasFullBorder

      • tabsOpaque

        protected boolean tabsOpaque

      • rotateTabRuns

        protected boolean rotateTabRuns
        Since:
        2.5

      • tabType

        private int tabType

      • tabsPopupPolicy

        private int tabsPopupPolicy

      • scrollButtonsPolicy

        private int scrollButtonsPolicy

      • scrollButtonsPlacement

        private int scrollButtonsPlacement

      • tabAreaAlignment

        private int tabAreaAlignment

      • tabAlignment

        private int tabAlignment

      • tabWidthMode

        private int tabWidthMode

      • tabRotation

        private int tabRotation
        Since:
        3.3

      • closeIcon

        protected javax.swing.Icon closeIcon

      • arrowType

        protected java.lang.String arrowType

      • buttonInsets

        protected java.awt.Insets buttonInsets

      • buttonArc

        protected int buttonArc

      • buttonHoverBackground

        protected java.awt.Color buttonHoverBackground

      • buttonPressedBackground

        protected java.awt.Color buttonPressedBackground

      • moreTabsButtonToolTipText

        protected java.lang.String moreTabsButtonToolTipText

      • tabCloseToolTipText

        protected java.lang.String tabCloseToolTipText
        Since:
        2

      • showContentSeparator

        protected boolean showContentSeparator
        Since:
        2

      • hideTabAreaWithOneTab

        protected boolean hideTabAreaWithOneTab
        Since:
        2

      • tabClosable

        protected boolean tabClosable
        Since:
        2

      • tabIconPlacement

        protected int tabIconPlacement
        Since:
        2

      • tabViewport

        protected javax.swing.JViewport tabViewport

      • tabCloseButton

        private javax.swing.JButton tabCloseButton

      • moreTabsButton

        private javax.swing.JButton moreTabsButton

      • leadingComponent

        private java.awt.Container leadingComponent

      • trailingComponent

        private java.awt.Container trailingComponent

      • scrollBackwardButtonPrefSize

        private java.awt.Dimension scrollBackwardButtonPrefSize

      • blockRollover

        private boolean blockRollover

      • rolloverTabClose

        private boolean rolloverTabClose

      • pressedTabClose

        private boolean pressedTabClose

      • inBasicLayoutContainer

        private boolean inBasicLayoutContainer

      • oldRenderingHints

        private java.lang.Object[] oldRenderingHints

      • oldStyleValues

        private java.util.Map<java.lang.String,​java.lang.Object> oldStyleValues

      • closeIconShared

        private boolean closeIconShared

      • repaintRolloverPending

        private boolean repaintRolloverPending

      • inCalculateEqual

        private boolean inCalculateEqual

    • Constructor Detail

      • FlatTabbedPaneUI

        public FlatTabbedPaneUI()

    • Method Detail

      • createUI

        public static javax.swing.plaf.ComponentUI createUI​(javax.swing.JComponent c)

      • installUI

        public void installUI​(javax.swing.JComponent c)
        Overrides:
        installUI in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • installDefaults

        protected void installDefaults()
        Overrides:
        installDefaults in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • uninstallDefaults

        protected void uninstallDefaults()
        Overrides:
        uninstallDefaults in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • installComponents

        protected void installComponents()
        Overrides:
        installComponents in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • uninstallComponents

        protected void uninstallComponents()
        Overrides:
        uninstallComponents in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • installHiddenTabsNavigation

        protected void installHiddenTabsNavigation()

      • uninstallHiddenTabsNavigation

        protected void uninstallHiddenTabsNavigation()

      • installLeadingComponent

        protected void installLeadingComponent()

      • uninstallLeadingComponent

        protected void uninstallLeadingComponent()

      • installTrailingComponent

        protected void installTrailingComponent()

      • uninstallTrailingComponent

        protected void uninstallTrailingComponent()

      • installListeners

        protected void installListeners()
        Overrides:
        installListeners in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • uninstallListeners

        protected void uninstallListeners()
        Overrides:
        uninstallListeners in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • installKeyboardActions

        protected void installKeyboardActions()
        Overrides:
        installKeyboardActions in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • createMouseListener

        protected java.awt.event.MouseListener createMouseListener()
        Overrides:
        createMouseListener in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • createPropertyChangeListener

        protected java.beans.PropertyChangeListener createPropertyChangeListener()
        Overrides:
        createPropertyChangeListener in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • createChangeListener

        protected javax.swing.event.ChangeListener createChangeListener()
        Overrides:
        createChangeListener in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • createFocusListener

        protected java.awt.event.FocusListener createFocusListener()
        Overrides:
        createFocusListener in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • createLayoutManager

        protected java.awt.LayoutManager createLayoutManager()
        Overrides:
        createLayoutManager in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • createScrollLayoutManager

        protected java.awt.LayoutManager createScrollLayoutManager​(javax.swing.plaf.basic.BasicTabbedPaneUI.TabbedPaneLayout delegate)

      • createMoreTabsButton

        protected javax.swing.JButton createMoreTabsButton()

      • createScrollButton

        protected javax.swing.JButton createScrollButton​(int direction)
        Overrides:
        createScrollButton in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • installStyle

        protected void installStyle()
        Since:
        2

      • applyStyle

        protected void applyStyle​(java.lang.Object style)
        Since:
        2

      • applyStyleProperty

        protected java.lang.Object applyStyleProperty​(java.lang.String key,
                                              java.lang.Object value)
        Since:
        2

      • setRolloverTab

        protected void setRolloverTab​(int x,
                              int y)

      • setRolloverTab

        protected void setRolloverTab​(int index)
        Overrides:
        setRolloverTab in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • repaintRolloverLaterOnce

        private void repaintRolloverLaterOnce​(int oldIndex)
        Repaint rollover tab, but deferred and only once. This is to avoid unnecessary repaints in case of temporary changes to rollover tab. E.g. when moving mouse over a single tab, a re-layout may occur and set rollover tab to -1, in BasicTabbedPaneUI.TabbedPaneLayout.layoutContainer() and BasicTabbedPaneUI.TabbedPaneScrollLayout.layoutContainer(), and subsequently change rollover tab back to previous value.

      • isRolloverTabClose

        protected boolean isRolloverTabClose()

      • setRolloverTabClose

        protected void setRolloverTabClose​(boolean rollover)

      • isPressedTabClose

        protected boolean isPressedTabClose()

      • setPressedTabClose

        protected void setPressedTabClose​(boolean pressed)

      • repaintTab

        private void repaintTab​(int tabIndex)

      • calculateTabWidth

        protected int calculateTabWidth​(int tabPlacement,
                                int tabIndex,
                                java.awt.FontMetrics metrics)
        Overrides:
        calculateTabWidth in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • calculateTabWidthImpl

        private int calculateTabWidthImpl​(int tabPlacement,
                                  int tabIndex,
                                  java.awt.FontMetrics metrics,
                                  boolean rotated)

      • calculateTabHeight

        protected int calculateTabHeight​(int tabPlacement,
                                 int tabIndex,
                                 int fontHeight)
        Overrides:
        calculateTabHeight in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • calculateTabHeightImpl

        private int calculateTabHeightImpl​(int tabPlacement,
                                   int tabIndex,
                                   int fontHeight,
                                   boolean rotated)

      • calculateMaxTabWidth

        protected int calculateMaxTabWidth​(int tabPlacement)
        Overrides:
        calculateMaxTabWidth in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • calculateMaxTabHeight

        protected int calculateMaxTabHeight​(int tabPlacement)
        Overrides:
        calculateMaxTabHeight in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • calculateTabAreaWidth

        protected int calculateTabAreaWidth​(int tabPlacement,
                                    int vertRunCount,
                                    int maxTabWidth)
        Overrides:
        calculateTabAreaWidth in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • calculateTabAreaHeight

        protected int calculateTabAreaHeight​(int tabPlacement,
                                     int horizRunCount,
                                     int maxTabHeight)
        Overrides:
        calculateTabAreaHeight in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • getTabInsets

        protected java.awt.Insets getTabInsets​(int tabPlacement,
                                       int tabIndex)
        Overrides:
        getTabInsets in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • getTabInsetsRotated

        protected java.awt.Insets getTabInsetsRotated​(int tabPlacement,
                                              int tabIndex,
                                              int rotation)
        Since:
        3.3

      • getSelectedTabPadInsets

        protected java.awt.Insets getSelectedTabPadInsets​(int tabPlacement)
        Overrides:
        getSelectedTabPadInsets in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • getRealTabAreaInsets

        protected java.awt.Insets getRealTabAreaInsets​(int tabPlacement)

      • getTabAreaInsets

        protected java.awt.Insets getTabAreaInsets​(int tabPlacement)
        Overrides:
        getTabAreaInsets in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • getContentBorderInsets

        protected java.awt.Insets getContentBorderInsets​(int tabPlacement)
        The content border insets are used to create a separator between tabs and content. If client property JTabbedPane.hasFullBorder is true, then the content border insets are also used for the border.
        Overrides:
        getContentBorderInsets in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • getTabLabelShiftX

        protected int getTabLabelShiftX​(int tabPlacement,
                                int tabIndex,
                                boolean isSelected)
        Overrides:
        getTabLabelShiftX in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • getTabLabelShiftY

        protected int getTabLabelShiftY​(int tabPlacement,
                                int tabIndex,
                                boolean isSelected)
        Overrides:
        getTabLabelShiftY in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • update

        public void update​(java.awt.Graphics g,
                   javax.swing.JComponent c)
        Overrides:
        update in class javax.swing.plaf.ComponentUI

      • paint

        public void paint​(java.awt.Graphics g,
                  javax.swing.JComponent c)
        Overrides:
        paint in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • paintTabArea

        protected void paintTabArea​(java.awt.Graphics g,
                            int tabPlacement,
                            int selectedIndex)
        Overrides:
        paintTabArea in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • paintTab

        protected void paintTab​(java.awt.Graphics g,
                        int tabPlacement,
                        java.awt.Rectangle[] rects,
                        int tabIndex,
                        java.awt.Rectangle iconRect,
                        java.awt.Rectangle textRect)
        Overrides:
        paintTab in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • paintText

        protected void paintText​(java.awt.Graphics g,
                         int tabPlacement,
                         java.awt.Font font,
                         java.awt.FontMetrics metrics,
                         int tabIndex,
                         java.lang.String title,
                         java.awt.Rectangle textRect,
                         boolean isSelected)
        Overrides:
        paintText in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • paintIcon

        protected void paintIcon​(java.awt.Graphics g,
                         int tabPlacement,
                         int tabIndex,
                         javax.swing.Icon icon,
                         java.awt.Rectangle iconRect,
                         boolean isSelected)
        Overrides:
        paintIcon in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • rotateGraphics

        private java.awt.geom.AffineTransform rotateGraphics​(java.awt.Graphics g,
                                                     int tabPlacement,
                                                     java.awt.Rectangle r)

      • getTabForeground

        protected java.awt.Color getTabForeground​(int tabPlacement,
                                          int tabIndex,
                                          boolean isSelected)
        Since:
        3.1

      • paintTabBackground

        protected void paintTabBackground​(java.awt.Graphics g,
                                  int tabPlacement,
                                  int tabIndex,
                                  int x,
                                  int y,
                                  int w,
                                  int h,
                                  boolean isSelected)
        Overrides:
        paintTabBackground in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • getTabBackground

        protected java.awt.Color getTabBackground​(int tabPlacement,
                                          int tabIndex,
                                          boolean isSelected)
        Since:
        2

      • paintTabBorder

        protected void paintTabBorder​(java.awt.Graphics g,
                              int tabPlacement,
                              int tabIndex,
                              int x,
                              int y,
                              int w,
                              int h,
                              boolean isSelected)
        Overrides:
        paintTabBorder in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • paintCardTabBorder

        protected void paintCardTabBorder​(java.awt.Graphics g,
                                  int tabPlacement,
                                  int tabIndex,
                                  int x,
                                  int y,
                                  int w,
                                  int h)
        Since:
        2

      • createCardTabOuterPath

        protected java.awt.Shape createCardTabOuterPath​(int tabPlacement,
                                                int x,
                                                int y,
                                                int w,
                                                int h)
        Since:
        3.2

      • createCardTabInnerPath

        protected java.awt.Shape createCardTabInnerPath​(int tabPlacement,
                                                int x,
                                                int y,
                                                int w,
                                                int h)
        Since:
        3.2

      • paintTabCloseButton

        protected void paintTabCloseButton​(java.awt.Graphics g,
                                   int tabIndex,
                                   int x,
                                   int y,
                                   int w,
                                   int h)

      • paintTabSeparator

        protected void paintTabSeparator​(java.awt.Graphics g,
                                 int tabPlacement,
                                 int x,
                                 int y,
                                 int w,
                                 int h)

      • paintTabSelection

        protected void paintTabSelection​(java.awt.Graphics g,
                                 int tabPlacement,
                                 int tabIndex,
                                 int x,
                                 int y,
                                 int w,
                                 int h)

      • isTabbedPaneOrChildFocused

        protected boolean isTabbedPaneOrChildFocused()
        Since:
        2.2

      • paintContentBorder

        protected void paintContentBorder​(java.awt.Graphics g,
                                  int tabPlacement,
                                  int selectedIndex)
        Actually does nearly the same as super.paintContentBorder() but - not using UIManager.getColor("TabbedPane.contentAreaColor") to be GUI builder friendly - tabsOverlapBorder is always true - paint full border (if enabled) - not invoking paintContentBorder*Edge() methods - repaint selection - painting active tab border style
        Overrides:
        paintContentBorder in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • paintFocusIndicator

        protected void paintFocusIndicator​(java.awt.Graphics g,
                                   int tabPlacement,
                                   java.awt.Rectangle[] rects,
                                   int tabIndex,
                                   java.awt.Rectangle iconRect,
                                   java.awt.Rectangle textRect,
                                   boolean isSelected)
        Overrides:
        paintFocusIndicator in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • layoutAndClipLabel

        protected java.lang.String layoutAndClipLabel​(int tabPlacement,
                                              java.awt.FontMetrics metrics,
                                              int tabIndex,
                                              java.lang.String title,
                                              javax.swing.Icon icon,
                                              java.awt.Rectangle tabRect,
                                              java.awt.Rectangle iconRect,
                                              java.awt.Rectangle textRect,
                                              boolean isSelected)

      • layoutVerticalCompoundLabel

        private java.lang.String layoutVerticalCompoundLabel​(int rotation,
                                                     javax.swing.JComponent c,
                                                     java.awt.FontMetrics fm,
                                                     java.lang.String text,
                                                     javax.swing.Icon icon,
                                                     int verticalAlignment,
                                                     int horizontalAlignment,
                                                     int verticalTextPosition,
                                                     int horizontalTextPosition,
                                                     java.awt.Rectangle viewR,
                                                     java.awt.Rectangle iconR,
                                                     java.awt.Rectangle textR,
                                                     int textIconGap)

      • rotateLeft

        private void rotateLeft​(java.awt.Rectangle viewR,
                        java.awt.Rectangle r)

      • rotateRight

        private void rotateRight​(java.awt.Rectangle viewR,
                         java.awt.Rectangle r)

      • getRealTabRotation

        protected int getRealTabRotation​(int tabPlacement)
        Since:
        3.3

      • tabForCoordinate

        public int tabForCoordinate​(javax.swing.JTabbedPane pane,
                            int x,
                            int y)
        Overrides:
        tabForCoordinate in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • getTabBounds

        protected java.awt.Rectangle getTabBounds​(int tabIndex,
                                          java.awt.Rectangle dest)
        Overrides:
        getTabBounds in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • getTabCloseBounds

        protected java.awt.Rectangle getTabCloseBounds​(int tabIndex,
                                               int x,
                                               int y,
                                               int w,
                                               int h,
                                               java.awt.Rectangle dest)

      • getTabCloseHitArea

        protected java.awt.Rectangle getTabCloseHitArea​(int tabIndex)

      • isTabClosable

        protected boolean isTabClosable​(int tabIndex)

      • closeTab

        protected void closeTab​(int tabIndex)

      • getTabClientProperty

        protected java.lang.Object getTabClientProperty​(int tabIndex,
                                                java.lang.String key)

      • getTabClientPropertyInt

        protected int getTabClientPropertyInt​(int tabIndex,
                                      java.lang.String key,
                                      int defaultValue)

      • ensureCurrentLayout

        protected void ensureCurrentLayout()

      • shouldRotateTabRuns

        protected boolean shouldRotateTabRuns​(int tabPlacement)
        Overrides:
        shouldRotateTabRuns in class javax.swing.plaf.basic.BasicTabbedPaneUI

      • isLastInRun

        private boolean isLastInRun​(int tabIndex)

      • isScrollTabLayout

        private boolean isScrollTabLayout()

      • isLeftToRight

        private boolean isLeftToRight()

      • isHorizontalTabPlacement

        protected boolean isHorizontalTabPlacement​(int tabPlacement)
        Since:
        3.3

      • isHorizontalOrRotated

        private boolean isHorizontalOrRotated​(int tabPlacement)
        Returns true if tab placement is top/bottom and text is painted horizontally or if tab placement is left/right and text is painted vertically (rotated).

      • isSmoothScrollingEnabled

        protected boolean isSmoothScrollingEnabled()

      • hideTabArea

        protected boolean hideTabArea()

      • getTabType

        protected int getTabType()
        Since:
        2

      • getTabsPopupPolicy

        protected int getTabsPopupPolicy()

      • getScrollButtonsPolicy

        protected int getScrollButtonsPolicy()

      • getScrollButtonsPlacement

        protected int getScrollButtonsPlacement()

      • getTabAreaAlignment

        protected int getTabAreaAlignment()

      • getTabAlignment

        protected int getTabAlignment​(int tabIndex)

      • getTabWidthMode

        protected int getTabWidthMode()

      • getTabRotation

        protected int getTabRotation()
        Since:
        3.3

      • parseTabType

        protected static int parseTabType​(java.lang.String str)
        Since:
        2

      • parseTabsPopupPolicy

        protected static int parseTabsPopupPolicy​(java.lang.String str)

      • parseScrollButtonsPolicy

        protected static int parseScrollButtonsPolicy​(java.lang.String str)

      • parseScrollButtonsPlacement

        protected static int parseScrollButtonsPlacement​(java.lang.String str)

      • parseAlignment

        protected static int parseAlignment​(java.lang.String str,
                                    int defaultValue)

      • alignmentToString

        private static java.lang.String alignmentToString​(int value,
                                                  java.lang.String defaultValue)

      • parseTabWidthMode

        protected static int parseTabWidthMode​(java.lang.String str)

      • parseTabRotation

        protected static int parseTabRotation​(java.lang.String str)
        Since:
        3.3

      • parseTabIconPlacement

        protected static int parseTabIconPlacement​(java.lang.String str)

      • runWithOriginalLayoutManager

        private void runWithOriginalLayoutManager​(java.lang.Runnable runnable)

      • ensureSelectedTabIsVisibleLater

        protected void ensureSelectedTabIsVisibleLater()

      • ensureSelectedTabIsVisible

        protected void ensureSelectedTabIsVisible()

      • getLeadingPreferredWidth

        private int getLeadingPreferredWidth()

      • getLeadingPreferredHeight

        private int getLeadingPreferredHeight()

      • getTrailingPreferredWidth

        private int getTrailingPreferredWidth()

      • getTrailingPreferredHeight

        private int getTrailingPreferredHeight()

      • shiftTabs

        private void shiftTabs​(int sx,
                       int sy)

      • stretchTabsWidth

        private void stretchTabsWidth​(int sw,
                              boolean leftToRight)

      • stretchTabsHeight

        private void stretchTabsHeight​(int sh)

      • rectsTotalWidth

        private int rectsTotalWidth​(boolean leftToRight)

      • rectsTotalHeight

        private int rectsTotalHeight()

      • isTitleBarCaptionAt

        public java.lang.Boolean isTitleBarCaptionAt​(int x,
                                             int y)
        Description copied from interface: FlatTitlePane.TitleBarCaptionHitTest
        Invoked for a component that is enabled and has mouse listeners, to check whether it processes mouse input at the given x/y location. Useful for components that do not use mouse input on whole component bounds. E.g. a tabbed pane with a few tabs has some empty space beside the tabs that can be used to move the window.

        Note:

        • This method is invoked often when mouse is moved over window title bar area and should therefore return quickly.
        • This method is invoked on 'AWT-Windows' thread (not 'AWT-EventQueue' thread) while processing Windows messages. It must not change any component property or layout because this could cause a dead lock.
        Specified by:
        isTitleBarCaptionAt in interface FlatTitlePane.TitleBarCaptionHitTest
        Returns:
        true if the component is not interested in mouse input at the given location false if the component wants process mouse input at the given location null if the component children should be checked
        Since:
        3.4