GanttChartView.java 文件源码

public void init() {
        taskScrollPanel.getElement().getStyle().setPosition(Position.ABSOLUTE);
        taskScrollPanel.getElement().getStyle().setOverflow(Overflow.SCROLL);

        //initialize the SVG panel
        initSVG();

        //add scroll handler
        taskScrollPanel.addScrollHandler(new ScrollHandler() {

            @Override
            public void onScroll(ScrollEvent event) {
                int hscroll = taskScrollPanel.getHorizontalScrollPosition() * -1;

                firstHeaderRow.getElement().getStyle().setLeft(hscroll, Unit.PX);
                secondHeaderRow.getElement().getStyle().setLeft(hscroll, Unit.PX);
                taskBackgroundPanel.getElement().getStyle().setLeft(hscroll, Unit.PX);
                display.fireEvent(event);
//                view.onScroll(taskScrollPanel.getHorizontalScrollPosition(),
//                        taskScrollPanel.getScrollPosition());
            }
        });
    }