JavaFX ImageView
2024-10-09 16:32:46
例子1：显示4个狗头。正常显示左上角、右下角的狗头；右上角的狗头旋转180°，并设置了透明度；左下角的狗头旋转90°，也设置了透明度。
1 import javafx.application.Application;
2 import javafx.geometry.Insets;
3 import javafx.scene.Scene;
4 import javafx.scene.image.Image;
5 import javafx.scene.image.ImageView;
6 import javafx.scene.layout.GridPane;
7 import javafx.stage.Stage;
8
9 public class Main extends Application {
10
11 public static void main(String[] args) {
12 launch(args);
13 }
14
15 @Override
16 public void start(Stage primaryStage) throws Exception {
17
18 // Create a pane to hold the images
19 GridPane pane = new GridPane();
20 pane.setStyle("-fx-border-color: green;");
21 pane.setPadding(new Insets(10));
22 pane.setHgap(10); // The width of the horizontal gaps between columns.
23 pane.setVgap(10); // The height of the vertical gaps between rows.
24
25 // Create a image view to hold a image
26 ImageView ivGamer1 = new ImageView("image/Gamer1.jpg");
27 ivGamer1.setFitWidth(100);
28 ivGamer1.setFitHeight(100);
29 pane.add(ivGamer1, 0, 0); // Add image view to pane
30
31 // Create a image view to hold a image
32 ImageView ivGamer2 = new ImageView("image/Gamer1.jpg");
33 ivGamer2.setFitWidth(100);
34 ivGamer2.setFitHeight(100);
35 ivGamer2.setStyle("-fx-rotate: 180; -fx-opacity: 0.6;");
36 pane.add(ivGamer2, 1, 0);
37
38 // Create a image view to hold a image
39 ImageView ivGamer3 = new ImageView("image/Gamer1.jpg");
40 ivGamer3.setFitWidth(100);
41 ivGamer3.setFitHeight(100);
42 ivGamer3.setStyle("-fx-rotate: 90; -fx-opacity: 0.2;");
43 pane.add(ivGamer3, 0, 1);
44
45 // Create a image view to hold a image
46 Image iGamer4 = new Image("image/Gamer2.jpg");
47 ImageView ivGamer4 = new ImageView(iGamer4);
48 ivGamer4.setFitWidth(100);
49 ivGamer4.setFitHeight(100);
50 pane.add(ivGamer4, 1, 1);
51
52 // Create a scene
53 Scene scene = new Scene(pane);
54
55 primaryStage.setScene(scene);
56 primaryStage.setTitle("Gamers");
57 primaryStage.setResizable(true);
58 primaryStage.show();
59 }
60 }
运行效果：
例子2：以半透明的状态显示两个狗头，当点击其中某一个狗头，就让它变成不透明，另一个保持半透明。当将鼠标移进某一狗头所在的区域，而不点击时，该狗头变成不透明，另一个狗头变成半透明；当鼠标移出该狗头所在的区域，恢复两个狗头原来的状态。
1 import javafx.application.Application;
2 import javafx.event.EventHandler;
3 import javafx.geometry.Insets;
4 import javafx.scene.Scene;
5 import javafx.scene.image.Image;
6 import javafx.scene.image.ImageView;
7 import javafx.scene.input.MouseEvent;
8 import javafx.scene.layout.GridPane;
9 import javafx.stage.Stage;
10
11 public class Main extends Application {
12
13 String opacityOfGamer1 = "-fx-opacity: 0.5;";
14 String opacityOfGamer2 = "-fx-opacity: 0.5;";
15
16 public static void main(String[] args) {
17 launch(args);
18 }
19
20 @Override
21 public void start(Stage primaryStage) throws Exception {
22 // Create a pane to hold the images
23 GridPane pane = new GridPane();
24 pane.setStyle("-fx-border-color: green;");
25 pane.setPadding(new Insets(10));
26 pane.setHgap(10); // The width of the horizontal gaps between columns.
27 pane.setVgap(10); // The height of the vertical gaps between rows.
28
29 // Create a image view to hold a image
30 ImageView ivGamer1 = new ImageView("image/Gamer1.jpg");
31 ivGamer1.setFitWidth(100);
32 ivGamer1.setFitHeight(100);
33 ivGamer1.setStyle("-fx-opacity: 0.5;");
34 pane.add(ivGamer1, 0, 0); // Add image view to pane
35
36 // Create a image view to hold a image
37 Image iGamer2 = new Image("image/Gamer2.jpg");
38 ImageView ivGamer2 = new ImageView(iGamer2);
39 ivGamer2.setFitWidth(100);
40 ivGamer2.setFitHeight(100);
41 ivGamer2.setStyle("-fx-opacity: 0.5;");
42 pane.add(ivGamer2, 1, 0);
43
44
45 ivGamer1.setOnMouseClicked(new EventHandler<MouseEvent>() {
46 @Override
47 public void handle(MouseEvent event) {
48 ivGamer1.setStyle("-fx-opacity: 1;");
49 ivGamer2.setStyle("-fx-opacity: 0.5;");
50 opacityOfGamer1 = ivGamer1.getStyle();
51 opacityOfGamer2 = ivGamer2.getStyle();
52 System.out.println("The opacity of the Gamer 1: " + opacityOfGamer1);
53 System.out.println("The opacity of the Gamer 2: " + opacityOfGamer2);
54 System.out.println();
55 }
56 });
57
58 ivGamer1.setOnMouseEntered(new EventHandler<MouseEvent>() {
59 @Override
60 public void handle(MouseEvent event) {
61 ivGamer1.setStyle("-fx-opacity: 1;");
62 ivGamer2.setStyle("-fx-opacity: 0.5;");
63 }
64 });
65
66 ivGamer1.setOnMouseExited(new EventHandler<MouseEvent>() {
67 @Override
68 public void handle(MouseEvent event) {
69 ivGamer1.setStyle(opacityOfGamer1);
70 ivGamer2.setStyle(opacityOfGamer2);
71 }
72 });
73
74 ivGamer2.setOnMouseClicked(new EventHandler<MouseEvent>() {
75 @Override
76 public void handle(MouseEvent event) {
77 ivGamer1.setStyle("-fx-opacity: 0.5;");
78 ivGamer2.setStyle("-fx-opacity: 1;");
79 opacityOfGamer1 = ivGamer1.getStyle();
80 opacityOfGamer2 = ivGamer2.getStyle();
81 System.out.println("The opacity of the Gamer 1: " + opacityOfGamer1);
82 System.out.println("The opacity of the Gamer 2: " + opacityOfGamer2);
83 System.out.println();
84 }
85 });
86
87 ivGamer2.setOnMouseEntered(new EventHandler<MouseEvent>() {
88 @Override
89 public void handle(MouseEvent event) {
90 ivGamer1.setStyle("-fx-opacity: 0.5;");
91 ivGamer2.setStyle("-fx-opacity: 1;");
92 }
93 });
94
95 ivGamer2.setOnMouseExited(new EventHandler<MouseEvent>() {
96 @Override
97 public void handle(MouseEvent event) {
98 ivGamer1.setStyle(opacityOfGamer1);
99 ivGamer2.setStyle(opacityOfGamer2);
100 }
101 });
102
103
104 // Create a scene
105 Scene scene = new Scene(pane);
106
107 primaryStage.setScene(scene);
108 primaryStage.setTitle("Gamers");
109 primaryStage.setResizable(true);
110 primaryStage.show();
111 }
112 }
运行效果：
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