java 如何使用 JavaFX 8 在图像上重叠按钮/文本？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/27912628/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How to Overlap buttons/Text over an image with JavaFX 8?
提问by Tacent
I am having trouble placing buttons/text over an image I am using with JavaFX 8.
我在使用 JavaFX 8 的图像上放置按钮/文本时遇到问题。
I used an ImageViewer to place the image but I am unable to actually get the rest ON TOP of the image.
我使用 ImageViewer 放置图像，但实际上无法将其余部分放在图像的顶部。
I am using setTranslateX,Y to move the button around but it never overlaps.
我正在使用 setTranslateX,Y 来移动按钮，但它从不重叠。
Please tell me how I can solve this issue.
请告诉我如何解决这个问题。
import javafx.application.Application;
import javafx.geometry.Rectangle2D;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ContentDisplay;
import javafx.scene.control.Label;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.text.Font;
import javafx.stage.Stage;
import javafx.scene.text.Text;
public class Main extends Application{
public static void main(String[] args)
{
Application.launch(args);
}
public void start(Stage stage) throws Exception {
int x = 450;
int y = 450;
Image image = new Image("space.jpg",x,y, false, false);
ImageView iv1 = new ImageView();
iv1.setImage(image);
iv1.setPreserveRatio(true);
iv1.setFitHeight(x);
iv1.setFitWidth(y);
Text text = new Text("hello");
text.setFont(Font.font ("Arial", 27));
Button button = new Button("Hello");
button.setTranslateX(10);
button.setTranslateY(10);
button.setContentDisplay(ContentDisplay.TOP);
HBox root = new HBox();
root.getChildren().add(iv1);
root.getChildren().add(text);
root.getChildren().add(button);
Scene scene = new Scene(root,x,y);
stage.setTitle("Space Blaster (New Game)");
stage.setScene(scene);
stage.show();
}
}
回答by James_D
You can use a StackPaneto overlay two nodes. For example:
您可以使用 aStackPane来覆盖两个节点。例如：
Button button = new Button("Hello");
Text text = new Text("hello");
HBox hbox = new HBox();
hbox.getChildren().addAll(button, text); // button will be left of text
Image image = new Image("space.jpg",x,y, false, false);
ImageView iv1 = new ImageView();
StackPane stackPane = new StackPane();
stackPane.getChildren().addAll(iv1, hbox); // hbox with button and text on top of image view
HBox root = new HBox();
root.getChildren().add(stackPane);
// etc
Another approach is just to put the controls (button and text) in a pane of some kind (e.g. HBox), and then to use CSS to set a background imageon the pane.
