程序小白，希望和大家多交流，共同学习 16.17
//使用滚动条调节字体颜色 import javafx.application.Application; import javafx.stage.Stage; import javafx.scene.Scene; import javafx.scene.paint.Color; import javafx.scene.text.Text; import javafx.scene.control.ScrollBar; import javafx.scene.layout.VBox; import javafx.scene.layout.BorderPane; public class ChangeTextColorUseScrollBar extends Application { //初始化各个滚动条的 private ScrollBar sbRed = new ScrollBar(); private ScrollBar sbBlue = new ScrollBar(); private ScrollBar sbGreen = new ScrollBar(); private ScrollBar sbOpacity = new ScrollBar(); private Text text = new Text("Show Color"); @Override public void start(Stage primaryStage) { VBox vbForRBGA = new VBox(10); vbForRBGA.getChildren().addAll(sbRed, sbBlue, sbGreen, sbOpacity); //功能实现 sbRed.valueProperty().addListener(e -> { setTextColor(); }); sbBlue.valueProperty().addListener(e -> { setTextColor(); }); sbGreen.valueProperty().addListener(e -> { setTextColor(); }); sbOpacity.valueProperty().addListener(e -> { setTextColor(); }); //排盘 BorderPane pane = new BorderPane(); pane.setCenter(text); pane.setBottom(vbForRBGA); Scene scene = new Scene(pane); primaryStage.setTitle("ChangeTextColorUseScrollBar"); primaryStage.setScene(scene); primaryStage.show(); } //设置颜色 public void setTextColor() { double redValue = sbRed.getValue() / 100; double blueValue = sbBlue.getValue() / 100; double greenValue = sbGreen.getValue() / 100; double opacityValue = sbOpacity.getValue() / 100; text.setFill(Color.color(redValue, blueValue, greenValue, opacityValue)); } }16.18、16.19
//旋转的风扇 import javafx.scene.layout.Pane; import javafx.scene.layout.HBox; import javafx.geometry.Pos; import javafx.scene.shape.Arc; import javafx.scene.shape.Circle; import javafx.scene.shape.ArcType; import javafx.scene.paint.Color; import javafx.scene.control.Button; import javafx.animation.Timeline; import javafx.animation.KeyFrame; import javafx.util.Duration; import javafx.event.EventHandler; import javafx.event.ActionEvent; import javafx.beans.property.DoubleProperty; public class FanPane extends Pane { private Timeline fanAnimation; private double LEN; private double W; private double H; private boolean direction = true; private double rotate = 10.0; private Arc a1; private Arc a2; private Arc a3; private Arc a4; public FanPane() { fanAnimation = new Timeline(); W = H = 250.0; LEN = 250.0; drawFanAnimation(); } //设置速率 public void setRate(double rate) { fanAnimation.rateProperty().setValue(rate); } //动画停止 public void pause() { fanAnimation.pause(); } //动画播放 public void resume() { fanAnimation.play(); } //动画反向 public void reverse() { direction = !direction; } public void fitLen(double w, double h) { this.W = w; this.H = h; this.LEN = Math.min(w, h); drawFanAnimation(); } //制作动画 public void drawFanAnimation() { this.getChildren().clear(); Circle circle = new Circle(W / 2, H / 2, LEN * 0.5); circle.setFill(Color.WHITE); circle.setStroke(Color.BLACK); a1 = new Arc(W / 2, H / 2, LEN * 0.45, LEN * 0.45, 0, 30); a1.setFill(Color.BLACK); a1.setStroke(Color.BLACK); a1.setType(ArcType.ROUND); a2 = new Arc(W / 2, H / 2, LEN * 0.45, LEN * 0.45, 90, 30); a2.setFill(Color.BLACK); a2.setStroke(Color.BLACK); a2.setType(ArcType.ROUND); a3 = new Arc(W / 2, H / 2, LEN * 0.45, LEN * 0.45, 180, 30); a3.setFill(Color.BLACK); a3.setStroke(Color.BLACK); a3.setType(ArcType.ROUND); a4 = new Arc(W / 2, H / 2, LEN * 0.45, LEN * 0.45, 270, 30); a4.setFill(Color.BLACK); a4.setStroke(Color.BLACK); a4.setType(ArcType.ROUND); EventHandler<ActionEvent> eventHandler = e -> { setNewRotate(); }; //此处设置注意 fanAnimation.getKeyFrames().add(new KeyFrame(Duration.millis(1000), eventHandler)); fanAnimation.setCycleCount(Timeline.INDEFINITE); fanAnimation.play(); this.getChildren().addAll(circle, a1, a2, a3, a4); } //设置风扇旋转 public void setNewRotate() { if (direction) { rotate = 10.0; } else rotate = -10.0; a1.startAngleProperty().setValue((a1.startAngleProperty().getValue() + rotate) % 360); a2.startAngleProperty().setValue((a2.startAngleProperty().getValue() + rotate) % 360); a3.startAngleProperty().setValue((a3.startAngleProperty().getValue() + rotate) % 360); a4.startAngleProperty().setValue((a4.startAngleProperty().getValue() + rotate) % 360); } } //对风扇的工作的控制类 import javafx.scene.control.Button; import javafx.scene.control.ScrollBar; import javafx.scene.layout.HBox; import javafx.scene.layout.BorderPane; import javafx.geometry.Pos; public class ControlFanPane extends BorderPane { private FanPane fan; private Button btPause; private Button btResume; private Button btReverse; private ScrollBar sbRate; public ControlFanPane() { fan = new FanPane(); btPause = new Button("Pause"); btResume = new Button("Resume"); btReverse = new Button("Reverse"); sbRate = new ScrollBar(); body(); } //提供开始方法 public void play() { fan.resume(); } //提供停止方法 public void stop() { fan.pause(); } //主体部分，将按钮，滚动条和风扇进行排版，和功能实现，还有这个 public void body() { HBox hbForControl = new HBox(10); hbForControl.setAlignment(Pos.CENTER); hbForControl.getChildren().addAll(btPause, btResume, btReverse); btPause.setOnAction(e -> { fan.pause(); }); btResume.setOnAction(e -> { fan.resume(); }); btReverse.setOnAction(e -> { fan.reverse(); }); sbRate.valueProperty().addListener(e -> { fan.setRate(sbRate.getValue()); }); this.setTop(hbForControl); this.setCenter(fan); this.setBottom(sbRate); } } //多个风扇一起控制 import javafx.application.Application; import javafx.stage.Stage; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.layout.HBox; import javafx.scene.layout.BorderPane; import javafx.geometry.Pos; public class MoreFans extends Application { @Override public void start(Stage primaryStage) { //三个可控风扇 ControlFanPane f1 = new ControlFanPane(); f1.setStyle("-fx-border-color: black"); ControlFanPane f2 = new ControlFanPane(); f2.setStyle("-fx-border-color: black"); ControlFanPane f3 = new ControlFanPane(); f3.setStyle("-fx-border-color: black"); HBox hbForFans = new HBox(10); hbForFans.setAlignment(Pos.CENTER); hbForFans.getChildren().addAll(f1, f2, f3); //控制所有风扇 Button btStartAll = new Button("Start All"); Button btStopAll = new Button("Stop All"); HBox hbForControl = new HBox(10); hbForControl.setAlignment(Pos.CENTER); hbForControl.getChildren().addAll(btStartAll, btStopAll); btStartAll.setOnAction(e -> { f1.play(); f2.play(); f3.play(); }); btStopAll.setOnAction(e -> { f1.stop(); f2.stop(); f3.stop(); }); //排版 BorderPane pane = new BorderPane(); pane.setTop(hbForFans); pane.setBottom(hbForControl); Scene scene = new Scene(pane); primaryStage.setTitle("MoreFans"); primaryStage.setScene(scene); primaryStage.show(); } }16.20
//计时器 import javafx.application.Application; import javafx.stage.Stage; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.text.Text; import javafx.scene.text.Font; import javafx.scene.layout.HBox; import javafx.scene.layout.BorderPane; import javafx.geometry.Pos; import javafx.animation.Timeline; import javafx.util.Duration; import javafx.animation.KeyFrame; import javafx.event.EventHandler; import javafx.event.ActionEvent; public class Calculagraph extends Application { private int hour = 0; private int minute = 0; private int second = 0; private Text text = new Text();//时间以文本形式显示 @Override public void start(Stage primaryStage) { //按照格式要求设置时间输出的格式 String str = String.format("d:d:d", hour, minute, second); text.setText(str); text.setFont(Font.font(40)); Button btStart = new Button("Start"); Button btClear = new Button("Clear"); HBox hb = new HBox(10); hb.setAlignment(Pos.CENTER); hb.getChildren().addAll(btStart, btClear); BorderPane pane = new BorderPane(); pane.setCenter(text); pane.setBottom(hb); //设置时间显示的动画 EventHandler<ActionEvent> eventHandler = e -> { addTime(); }; Timeline animation = new Timeline(new KeyFrame(Duration.millis(1000), eventHandler)); animation.setCycleCount(Timeline.INDEFINITE); //开始和清零按钮功能实现 btStart.setOnAction(e -> { if (btStart.getText().equals("Start"))//每次点击后按钮显示下一次点击的功能 { animation.play(); btStart.setText("Pause"); } else if (btStart.getText().equals("Pause")) { animation.pause(); btStart.setText("Start"); } }); //清空按钮将时间设置为零点 btClear.setOnAction(e -> { hour = 0; minute = 0; second = 0; String clear = String.format("d:d:d", hour, minute, second); text.setText(clear); animation.pause(); btStart.setText("Start"); }); Scene scene = new Scene(pane); primaryStage.setTitle("Calculagraph"); primaryStage.setScene(scene); primaryStage.show(); } //时间递增，当时间到达24小时清为0点 public void addTime() { if (second < 59) { second++; } else { second = 0; if (minute < 59) { minute++; } else { minute = 0; if (hour < 23) { hour++; } else hour = 0; } } String str = String.format("d:d:d", hour, minute, second); text.setText(str); } }16.21
//倒计时 import javafx.application.Application; import javafx.stage.Stage; import javafx.scene.Scene; import javafx.scene.control.TextField; import javafx.scene.text.Font; import javafx.scene.layout.StackPane; import javafx.geometry.Insets; import javafx.geometry.Pos; import javafx.event.ActionEvent; import javafx.event.EventHandler; import javafx.animation.Timeline; import javafx.animation.KeyFrame; import javafx.scene.media.Media; import javafx.scene.media.MediaPlayer; import javafx.scene.media.MediaView; import javafx.util.Duration; public class CountDown extends Application { private TextField tfTime = new TextField(); private String musicPath = getClass().getResource("sound/china.mp3").toString(); private Media media = new Media(musicPath); private MediaPlayer music = new MediaPlayer(media); private Timeline animation = new Timeline(); @Override public void start(Stage primaryStage) { //设置文本域的大小和字体 tfTime.setAlignment(Pos.CENTER); tfTime.setPrefColumnCount(2); tfTime.setFont(Font.font("", 40)); StackPane pane = new StackPane(); pane.getChildren().add(tfTime); //闹钟时间递减事件 EventHandler<ActionEvent> eventHandler = e -> { changeTime(); }; //秒数递减 animation.getKeyFrames().add(new KeyFrame(Duration.millis(1000), eventHandler)); animation.setCycleCount(Timeline.INDEFINITE); //一旦输入合法，文本域在时间到0之前不允许输入新的数字 tfTime.setOnAction(e -> { if (judgeTime()) { tfTime.setEditable(false); music.stop(); animation.play(); } else tfTime.setText("Illegal"); }); Scene scene = new Scene(pane); primaryStage.setTitle("CountDown"); primaryStage.setScene(scene); primaryStage.show(); } //规范输入不是非数字，不是空 public boolean judgeTime() { if (tfTime.getText().equals("")) { return false; } String in = tfTime.getText(); int len = in.length(); for (int i = 0; i < len; i++) { if (!Character.isDigit(in.charAt(i))) { return false; } } return true; } //修改时间，并且在时间为零的时候播放音乐 public void changeTime() { int time = Integer.parseInt(tfTime.getText()); if (time > 0) { time--; tfTime.setText("" + time); } else if (time == 0)//时间为零的时候播放音乐，文本域允许重新输入，时间递减时间停止。 { tfTime.setText("" + time); music.play(); tfTime.setEditable(true); animation.stop(); } } }