JFreechart 右键单击 XYItemEntity

Question

我意识到只有当用户左键单击 chart.MousePressed() 时才会调用 chartMouseClicked 方法，而当用户右键单击图表时会调用 mouseReleased() 方法。但我需要更多东西。我需要它们 together.I 需要查找用户是否右键单击 XYItemEntity.Then 我将显示新的弹出菜单项。如果用户 select 菜单项，我将传递来自 XYITEM 的信息。如果不是 XYItemEntity，我不会更新图表的 Popupmenu。这就是我如何检查 chartMouseClicked 上的 XYITEM 实体。

panel.addChartMouseListener(new ChartMouseListener() {
        public void chartMouseClicked(final ChartMouseEvent event) {
            /** If Time Instance point is clicked */
            if (event.getEntity() instanceof XYItemEntity) {

}}

Answer 1

我设法找到了结合 chartMouseMoved 和 mouseReleased 方法的解决方案。

 public void chartMouseMoved(final ChartMouseEvent event) {
            if (event.getEntity() instanceof XYItemEntity) {
                panel.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
                clickedSimulationItem = (XYItemEntity) event.getEntity();
            } else if (event.getEntity() instanceof PlotEntity) {
                handleMouseMoveOnPlot(event);
            } else {
                panel.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
                clickedSimulationItem = null;
            }
        }


private void addMouseListener() {
    panel.addMouseListener(new MouseListener() {
        @Override
        public void mouseReleased(MouseEvent e) {
            if (e.isPopupTrigger()) {
                if (clickedSimulationItem != null) {

                        panel.getPopupMenu().add(new JMenuItem("denem"));
                        /** update pop up */
                    }
                }
            }
        }

        @Override
        public void mouseClicked(MouseEvent e) {
            // TODO Auto-generated method stub
        }

        @Override
        public void mousePressed(MouseEvent e) {
            // TODO Auto-generated method stub
        }

        @Override
        public void mouseEntered(MouseEvent e) {
            // TODO Auto-generated method stub
        }

        @Override
        public void mouseExited(MouseEvent e) {
            // TODO Auto-generated method stub
        }
    });
}

JFreechart 右键单击 XYItemEntity

JFreechart right click on XYItemEntity

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JFreechart 右键单击​​ XYItemEntity

JFreechart right click on XYItemEntity

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JFreechart 右键单击 XYItemEntity