我正在使用
BorderFactory
创建一个带有Substance UI主题的Swing用户界面的标题边框,但我遇到了下面显示的异常。我尝试使用LineBorder
,它完美地工作,但似乎Substance UI在某种程度上干扰了TitledBorder
。边框绘制通过paintComponent
完成:if (getBorder() != null) {
getBorder().paintBorder(this, g, 0, 0, getWidth(), getHeight());
}
它本身可能是不正确的。我的问题实质上是如何在不创建父JPanel
并将其设置在上面的情况下使TitledBorder
正常工作,这似乎有点像一种逃避责任的做法。
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at org.pushingpixels.lafwidget.utils.RenderingUtils.desktopHints(RenderingUtils.java:113)
at org.pushingpixels.lafwidget.utils.RenderingUtils.installDesktopHints(RenderingUtils.java:85)
at org.pushingpixels.substance.internal.utils.border.SubstanceEtchedBorder.paintBorder(SubstanceEtchedBorder.java:132)
at javax.swing.border.TitledBorder.paintBorder(TitledBorder.java:330)
at javax.swing.JComponent.paintBorder(JComponent.java:947)
at javax.swing.JComponent.paint(JComponent.java:1055)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paint(JComponent.java:1063)
at javax.swing.JLayeredPane.paint(JLayeredPane.java:585)
at javax.swing.JComponent.paintChildren(JComponent.java:887)
at javax.swing.JComponent.paintToOffscreen(JComponent.java:5213)
at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:1493)
at javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1424)
at javax.swing.RepaintManager.paint(RepaintManager.java:1217)
at javax.swing.JComponent.paint(JComponent.java:1040)
at java.awt.GraphicsCallback$PaintCallback.run(GraphicsCallback.java:39)
at sun.awt.SunGraphicsCallback.runOneComponent(SunGraphicsCallback.java:78)
at sun.awt.SunGraphicsCallback.runComponents(SunGraphicsCallback.java:115)
at java.awt.Container.paint(Container.java:1951)
at java.awt.Window.paint(Window.java:3814)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:792)
at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:739)
at javax.swing.RepaintManager.prePaintDirtyRegions(RepaintManager.java:688)
at javax.swing.RepaintManager.access$700(RepaintManager.java:59)
at javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1632)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:660)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:211)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
Thanks in advance for any help.
JPanel
上... - BoffinBrain