import javafx.animation.*;
import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.effect.DropShadow;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.Background;
import javafx.scene.layout.BackgroundFill;
import javafx.scene.layout.CornerRadii;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
import javafx.util.Duration;
public class Main extends Application {
public class Toast extends Label {
private float displayTime = 0.90f;
private float initialPositon =0;
private float downBias = 10f;// the distance the label should sit below before appearing
Interpolator interpolator = new Interpolator() {
@Override
protected double curve(double v) {
//quadratic curve for upward motion
return -4 * ( v - 0.5 ) * ( v - 0.5 ) +1;
}
};
public Toast(String msg){
super();
this.setText(msg);
this.setOpacity(0);// starting it with zero because we dont want it to show up upoun adding it to the root
this.setBackground(new Background(new BackgroundFill(Color.WHEAT, CornerRadii.EMPTY, Insets.EMPTY)));// some background cosmetics
this.setAlignment(Pos.CENTER);
}
public void appear(){
this.setEffect(new DropShadow(20, Color.BLACK));// Shadow
//creating animation in the Y axis
Timeline timeline = new Timeline(
new KeyFrame(Duration.seconds(this.displayTime), new KeyValue(this.translateYProperty(),this.initialPositon-this.getMinHeight()-20, interpolator))
);
FadeTransition fd = new FadeTransition(Duration.seconds(this.displayTime),this);
fd.setCycleCount(1);
fd.setFromValue(0);
fd.setToValue(1.0);
fd.setInterpolator(interpolator);
fd.play();
timeline.play();
}
public void setInitialPositon(float positon){
this.initialPositon = positon+downBias;
this.setTranslateY(positon+downBias);
}
}
@Override
public void start(Stage primaryStage) throws Exception{
float sceneHeight = 230f;
float sceneWidth =230f;
Toast toast = new Toast("Hello World");
toast.setMinWidth(sceneWidth-40);
toast.setMinHeight(30);
toast.setInitialPositon(sceneHeight);
toast.setTranslateX(sceneWidth/2-toast.getMinWidth()/2);
Button showToast = new Button("show toast");
showToast.setOnMouseClicked(new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent mouseEvent) {
toast.appear();
}
});
Pane root = new Pane();
root.getChildren().addAll(toast,showToast);
Scene myscene =new Scene(root, sceneWidth, sceneWidth);
primaryStage.setScene(myscene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
不要忘记重构吐司类，以允许更灵活的术语内插器和其他修饰功能。