正如您在上图中所看到的,我有一个包含两个元素的stackpane,一个BorderPane(它还包含一个画布和一个状态栏)和另一个stackpane(其中包含一些其他UI内容)。
我希望能够从绿色堆叠窗格的不可见区域点击到黄色边框,但仍然允许点击绿色堆叠窗格上的实际UI内容(其中有可点击的东西,如按钮等)。
你是怎么做到的?
答案 0 :(得分:8)
您可以使用stackPane.setPickOnBounds(false);
。这意味着如果单击它的点不是透明的,则堆栈窗格将仅被标识为鼠标操作的目标(而不是默认行为,即如果鼠标将其标识为鼠标操作的目标点击是在其范围内。)
这是一个SSCCE:
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.canvas.Canvas;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
public class ClickThroughStackPane extends Application {
@Override
public void start(Stage primaryStage) {
Canvas canvas = new Canvas(400,400);
canvas.setOnMouseClicked(e -> System.out.println("Mouse click: canvas"));
HBox statusBar = new HBox(new Label("Status"));
statusBar.setOnMouseClicked(e -> System.out.println("Mouse click: statusBar"));
BorderPane borderPane = new BorderPane(canvas, statusBar, null, null, null);
Button button = new Button("Click");
button.setOnAction(e -> System.out.println("Button pressed"));
StackPane stack = new StackPane(button);
stack.setPickOnBounds(false);
StackPane root = new StackPane(borderPane, stack);
primaryStage.setScene(new Scene(root));
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
请注意,顶部堆栈窗格似乎没必要,因为您只需将其包含的UI元素直接添加到底层堆栈窗格即可。可以简单地重写前面的示例:
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.canvas.Canvas;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
public class ClickThroughStackPane extends Application {
@Override
public void start(Stage primaryStage) {
Canvas canvas = new Canvas(400,400);
canvas.setOnMouseClicked(e -> System.out.println("Mouse click: canvas"));
HBox statusBar = new HBox(new Label("Status"));
statusBar.setOnMouseClicked(e -> System.out.println("Mouse click: statusBar"));
BorderPane borderPane = new BorderPane(canvas, statusBar, null, null, null);
Button button = new Button("Click");
button.setOnAction(e -> System.out.println("Button pressed"));
StackPane root = new StackPane(borderPane, button);
primaryStage.setScene(new Scene(root));
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}