public class BasicPopupMenuSeparatorUI extends BasicSeparatorUI
highlight, shadow
Constructor and Description |
---|
BasicPopupMenuSeparatorUI() |
Modifier and Type | Method and Description |
---|---|
static ComponentUI |
createUI(JComponent c) |
Dimension |
getPreferredSize(JComponent c)
返回指定组件的首选大小适合的外观和感觉。
|
void |
paint(Graphics g, JComponent c)
适当地绘制指定的组件的外观和感觉。
|
getMaximumSize, getMinimumSize, installDefaults, installListeners, installUI, uninstallDefaults, uninstallListeners, uninstallUI
contains, getAccessibleChild, getAccessibleChildrenCount, getBaseline, getBaselineResizeBehavior, update
public static ComponentUI createUI(JComponent c)
public void paint(Graphics g, JComponent c)
ComponentUI
ComponentUI.update
方法调用时指定的组件正在粉刷。子类应重写此方法,并使用指定的
Graphics
对象呈现的成分含量。
paint
方法重写,继承类
BasicSeparatorUI
g
-
Graphics
背景的画
c
-正在绘制的构件;这种说法常常被忽视,但可能如果UI对象是无状态的,共享由多个组件
ComponentUI.update(java.awt.Graphics, javax.swing.JComponent)
public Dimension getPreferredSize(JComponent c)
ComponentUI
null
返回,首选大小将由组件的布局管理器的计算(这是与一个特定的布局管理器安装任何组件的首选方法)。此方法的默认实现将返回
null
。
getPreferredSize
方法重写,继承类
BasicSeparatorUI
c
优先度的被查询的成分;这种说法常常被忽视,但可能如果UI对象是无状态的,共享由多个组件
JComponent.getPreferredSize()
,
LayoutManager.preferredLayoutSize(java.awt.Container)
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