ChartPanel 未在 GUI 中注册为组件
ChartPanel not registering as a component in a GUI
我有以下输出。
Recursive call for org.jfree.chart.ChartPanel[chartpanelBoa
Component count 0 for org.jfree.chart.ChartPanel[chartpanelBoa
我运行得到这个输出的代码是
public void enableEverything(Container c){
Component [] p = c.getComponents();
System.out.println("Component count " + c.getComponentCount() + " for " +
c.toString().substring(0,40) );
for(Component pp : p){
pp.setEnabled(true);
if(pp instanceof Container){
System.out.println("Recursive call for " + pp.toString().substring(0,40));
enableEverything((Container) pp);
}
else System.out.println("No recursive call");
}
}
ChartPanel 可以在我的 JPanel 中看到,但是它不会计算图表面板。我期待
的输出
org.jfree.chart.ChartPanel[chartpanelBoa
的组件计数 1
计算组件的幕后是什么?
如 org.jfree.chart.ChartPanel
, a ChartPanel
is a JPanel
, but it contains no nested instances of Component
. A handful of Swing components are imported to handle a context menu, tooltips, etc., but the enclosed JFreeChart
itself is pure Java2D 的来源所示。
您似乎想在禁用图表时更改图表的视觉表示。您仍然可以使用 setBackgroundPaint()
或 setBackgroundImageAlpha()
.
调用 setEnabled()
on the ChartPanel
itself to leverage the JPanel
UI delegate. You can also modify the interior of the chart as desired; this 使背景变暗
我有以下输出。
Recursive call for org.jfree.chart.ChartPanel[chartpanelBoa
Component count 0 for org.jfree.chart.ChartPanel[chartpanelBoa
我运行得到这个输出的代码是
public void enableEverything(Container c){
Component [] p = c.getComponents();
System.out.println("Component count " + c.getComponentCount() + " for " +
c.toString().substring(0,40) );
for(Component pp : p){
pp.setEnabled(true);
if(pp instanceof Container){
System.out.println("Recursive call for " + pp.toString().substring(0,40));
enableEverything((Container) pp);
}
else System.out.println("No recursive call");
}
}
ChartPanel 可以在我的 JPanel 中看到,但是它不会计算图表面板。我期待
的输出org.jfree.chart.ChartPanel[chartpanelBoa
的组件计数 1计算组件的幕后是什么?
如 org.jfree.chart.ChartPanel
, a ChartPanel
is a JPanel
, but it contains no nested instances of Component
. A handful of Swing components are imported to handle a context menu, tooltips, etc., but the enclosed JFreeChart
itself is pure Java2D 的来源所示。
您似乎想在禁用图表时更改图表的视觉表示。您仍然可以使用 setBackgroundPaint()
或 setBackgroundImageAlpha()
.
setEnabled()
on the ChartPanel
itself to leverage the JPanel
UI delegate. You can also modify the interior of the chart as desired; this