private void initializeCanvas() {
panel.setSize(50 + 1 + graphWidth + "px", 25 + graphHeight + "px");
canvas.setWidth(graphWidth);
canvas.setHeight(graphHeight);
canvas.getElement().getStyle().setPropertyPx("width", graphWidth);
canvas.getElement().getStyle().setPropertyPx("height", graphHeight);
}
/**
* The constructor should first call super() to initialize the component and then handle any
* initialization relevant to Vaadin.
*/
public VCytographer() {
panel = new FocusPanel();
panel.setSize(graphWidth + "px", graphHeight + "px");
panel.addKeyDownHandler(this);
panel.addKeyUpHandler(this);
canvas = new VFocusDrawingArea(this, graphWidth, graphHeight);
canvas.addKeyDownHandler(this);
canvas.addKeyUpHandler(this);
canvas.addMouseMoveHandler(this);
canvas.addDoubleClickHandler(this);
canvas.addMouseUpHandler(this);
canvas.addMouseDownHandler(this);
canvas.addClickHandler(this);
canvas.addMouseWheelHandler(this);
graph = new VGraph(this, style, canvas, graphWidth, graphHeight);
panel.add(canvas);
canvas.add(graph);
initWidget(panel);
setStyleName(CLASSNAME);
DOM.setStyleAttribute(canvas.getElement(), "border", "1px solid black");
disableContextMenu(canvas.getElement());
}