JavaFX学习之样例3
该代码主要是针对node的mouseTransparentProperty和pickOnBoundsProperty属性。
mouseTransparentProperty为true则该节点及其子节点的鼠标事件无效，也就是说对鼠标透明了。
pickOnBoundsProperty则是计算边界（也就是哪些地方鼠标点击会有效）。默认为false，则边界是几何的边界。为true则是用矩形刚好把几何框起来的边界。
看例子
import javafx.application.Application;import javafx.beans.binding.Bindings;import javafx.event.EventHandler;import javafx.scene.Node;import javafx.scene.Scene;import javafx.scene.control.CheckBox;import javafx.scene.control.ToggleButton;import javafx.scene.input.MouseEvent;import javafx.scene.layout.StackPane;import javafx.scene.layout.VBox;import javafx.scene.paint.Color;import javafx.scene.shape.Circle;import javafx.stage.Stage;// Demonstrates the JavaFX node mouseTransparent and pickOnBounds properties.public class LayerClick extends Application { public static void main(String[] args) { launch(args); } @Override public void start(Stage stage) throws Exception { ToggleButton testButton = new ToggleButton(""); VBox layer1 = new VBox(); layer1.getChildren().add(testButton); Node layer2 = new Circle(100, 100, 100, Color.FIREBRICK); layer2.setOnMouseClicked(new EventHandler<MouseEvent>(){@Overridepublic void handle(MouseEvent event) {System.out.println("circle click");} }); layer2.setOpacity(0.7); StackPane stack = new StackPane(); stack.getChildren().setAll(layer1, layer2); stack.setStyle("-fx-background-color: azure;"); VBox layout = new VBox(); layout.getChildren().setAll( stack, createControls(testButton, layer2) ); stage.setScene(new Scene(layout)); stage.show(); } private VBox createControls(ToggleButton controlledButton, Node controlledNode) { controlledButton.textProperty().bind( Bindings .when(controlledNode.mouseTransparentProperty()).then("Completely Clickable") .otherwise(Bindings .when(controlledNode.pickOnBoundsProperty()).then("Not Clickable") .otherwise("Partially clickable") ) ); //button的text值绑定圆的mouseTransparentProperty和pickOnBoundsProperty CheckBox enableMouseTransparency = new CheckBox("Enable MouseTransparency"); enableMouseTransparency.setSelected(controlledNode.isMouseTransparent()); controlledNode.mouseTransparentProperty().bind(enableMouseTransparency.selectedProperty()); //圆的mouseTransparentProperty绑定checkbox的选中属性。 mouseTransparentProperty若为true则该节点及其子节点的鼠标事件无效 CheckBox enablePickOnBounds = new CheckBox("Enable Pick On Bounds"); enablePickOnBounds.setSelected(controlledNode.isPickOnBounds()); controlledNode.pickOnBoundsProperty().bind(enablePickOnBounds.selectedProperty()); //圆的pickOnBoundsProperty绑定checkbox的选中属性 VBox controls = new VBox(10); controls.setStyle("-fx-background-color: cornsilk; -fx-padding: 10;"); controls.getChildren().addAll( enableMouseTransparency, enablePickOnBounds ); return controls; }}