本文整理匯總了Java中java.awt.event.MouseEvent.SHIFT_MASK屬性的典型用法代碼示例。如果您正苦於以下問題：Java MouseEvent.SHIFT_MASK屬性的具體用法？Java MouseEvent.SHIFT_MASK怎麽用？Java MouseEvent.SHIFT_MASK使用的例子？那麽, 這裏精選的屬性代碼示例或許可以為您提供幫助。您也可以進一步了解該屬性所在類java.awt.event.MouseEvent的用法示例。
在下文中一共展示了MouseEvent.SHIFT_MASK屬性的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。
示例1: mousePressed
/**
* If the mouse is pressed in an empty area, create a new vertex there.
* If the mouse is pressed on an existing vertex, prepare to create
* an edge from that vertex to another
*/
@SuppressWarnings("unchecked")
@Override
public void mousePressed(MouseEvent e) {
if (checkModifiers(e)) {
final VisualizationViewer<Vertex, Edge> vv = (VisualizationViewer<Vertex, Edge>) e.getSource();
final Point2D p = e.getPoint();
GraphElementAccessor<Vertex, Edge> pickSupport = vv.getPickSupport();
if (pickSupport != null) {
final Vertex vertex = pickSupport.getVertex(vv.getModel().getGraphLayout(), p.getX(), p.getY());
if (vertex != null) { // get ready to make an edge
creatingAnEdge = true;
Graph<Vertex, Edge> graph = vv.getModel().getGraphLayout().getGraph();
edgeType = (graph instanceof DirectedGraph) ? EdgeType.DIRECTED : EdgeType.UNDIRECTED;
if ((e.getModifiers() & MouseEvent.SHIFT_MASK) != 0 && graph instanceof UndirectedGraph == false) {
edgeType = EdgeType.DIRECTED;
}
super.mousePressed(e);
} else { // make a new vertex
creatingAnEdge = false;
Vertex newVertex = (Vertex) vertexFactory.create();
action = new CreateVertexUndoableAction(vv.getGraphLayout(), newVertex, vv.getRenderContext().getMultiLayerTransformer().inverseTransform(p));
action.execute();
UndoableControl.getController().actionExecuted(action);
}
}
}
}