为什么折线图没有获得新设置

时间：2016-04-16 13:38:33

标签： javafx-8 scenebuilder

我想知道为什么我的图表在我的设置后没有获得新的设置，而不是更新轴。

主要课程：

project <-  structure(list(ROLL.NO. = c(3138L, 3138L, 3138L, 3138L, 3138L, 
3138L, 3138L, 3138L, 3138L, 3138L, 3138L, 3138L, 3138L, 3138L, 
3138L, 3138L, 3138L, 3138L, 3138L, 3138L, 3138L, 3129L, 3129L, 
3129L, 3129L, 3129L, 3129L, 3129L, 3129L, 3129L, 3129L, 3129L, 
3129L, 3129L, 3129L, 3129L, 3129L, 3129L, 3129L, 3129L, 3129L, 
3129L, 3129L, 3129L, 3121L, 3121L, 3121L, 3121L, 3121L, 3121L
), DC31 = c(2L, 2L, 1L, 2L, 2L, 2L, 1L, 2L, 1L, 2L, 1L, 2L, 2L, 
1L, 2L, 2L, 2L, 3L, 2L, 2L, 2L, 2L, 2L, 1L, 2L, 2L, 2L, 2L, 1L, 
2L, 1L, 1L, 2L, 2L, 1L, 2L, 2L, 2L, 1L, 2L, 2L, 2L, 2L, 1L, 2L, 
1L, 2L, 2L, 2L, 2L), D14 = c(2L, 2L, 1L, 2L, 2L, 1L, 1L, 2L, 
1L, 2L, 1L, 2L, 0L, 1L, 2L, 2L, 0L, 1L, 2L, 2L, 2L, 2L, 2L, 2L, 
2L, 2L, 2L, 2L, 1L, 2L, 1L, 1L, 2L, 2L, 1L, 2L, 2L, 2L, 1L, 1L, 
2L, 2L, 2L, 1L, 2L, 1L, 2L, 2L, 2L, 2L), HOUSE.NO = c("14/274", 
"14/259", "14/217", "14/258", "14/306", "14/300", "14/96", "14/166", 
"14/69", "14/68", "14/16", "14/93", "14/130", "14/321", "14/324", 
"14/139", "14/314", "14/323", "14/208", "14/78", "14/150", "14/155", 
"14/102", "14/132", "14/159", "14/163", "14/165", "14/146", "14/148", 
"14/104", "14/56", "14/53", "14/99", "14/48", "15/164", "15/148", 
"15/158", "15/107", "15/160", "15/162", "15/243", "15/66", "15/249", 
"15/86", "14/388", "14/396", "14/431", "14/401", "14/103", "15/36"
)), .Names = c("ROLL.NO.", "DC31", "D14", "HOUSE.NO"), row.names = c(NA, 
50L), class = "data.frame")

控制器类;单击“应用”按钮后，您可以在轴X和Y上设置您想要的变量，也可以使用一些验证，

package sample;

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;

public class Main extends Application {

    @Override
    public void start(Stage primaryStage) throws Exception{
        Parent root = FXMLLoader.load(getClass().getResource("sample.fxml"));
        primaryStage.setTitle("Hello World");
        primaryStage.setScene(new Scene(root, 1200, 800));
        primaryStage.show();
    }


    public static void main(String[] args) {
        launch(args);
    }
}

Axes class用于设置我想要在Axes上拥有的每个变量。

package sample;

import javafx.beans.binding.Bindings;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.geometry.Side;
import javafx.scene.chart.LineChart;
import javafx.scene.chart.NumberAxis;
import javafx.scene.control.TextField;
public class Controller {

    @FXML
    private TextField xMin, xMax, yMin, yMax, xTick, yTick, width, height;
    @FXML
    private LineChart<Number, Number> axesTest;
    @FXML
    private NumberAxis xAxis, yAxis;

    private Axes axes;

    public void applyButtonClicked(ActionEvent event) {
        System.out.println("Applyed...");
        axes = new Axes();

        axes.setxMin(Double.parseDouble(xMin.getText()));
        axes.setxMax(Double.parseDouble(xMax.getText()));
        axes.setyMin(Double.parseDouble(yMin.getText()));
        axes.setyMax(Double.parseDouble(yMax.getText()));
        axes.setxTickUnit(Double.parseDouble(xTick.getText()));
        axes.setyTickUnit(Double.parseDouble(yTick.getText()));
        axes.setAxesWidth(Integer.parseInt(width.getText()));
        axes.setAxesHeight(Integer.parseInt(height.getText()));

        xAxis = new NumberAxis(axes.getxMin(), axes.getxMax(), axes.getxTickUnit());
        xAxis.setSide(Side.BOTTOM);
        xAxis.setMinorTickVisible(false);
        xAxis.setPrefWidth(axes.getAxesWidth());
        xAxis.setLayoutY(axes.getAxesHeight()/2);
        xAxis.autosize();

        xAxis.setLowerBound(axes.getxMin());
        xAxis.setUpperBound(axes.getxMax());
        xAxis.setTickUnit(axes.getxTickUnit());

        yAxis = new NumberAxis(axes.getyMin(), axes.getyMax(), axes.getyTickUnit());
        yAxis.setSide(Side.LEFT);
        yAxis.setMinorTickVisible(false);
        yAxis.setPrefHeight(axes.getAxesHeight());
        yAxis.layoutXProperty().bind(Bindings.subtract((axes.getAxesWidth() / 2) + 1, yAxis.widthProperty()));

        yAxis.setLowerBound(axes.getyMin());
        yAxis.setUpperBound(axes.getyMax());
        yAxis.setTickUnit(axes.getyTickUnit());

        axesTest = new LineChart<Number, Number>(xAxis, yAxis);

//        System.out.println("xMin : " + axes.getxMin() + "xMax : " + axes.getxMax() + "yMin :" + axes.getyMin() + "yMax : " + axes.getyMax()
//        + "xTick : " + axes.getxTickUnit() + "yTick : " + axes.getyTickUnit());
    }

    public void startButtonClicked() {

    }

}

sample.fxml文件，我在场景构建器中创建的每一件事。

package sample;

import javafx.scene.chart.NumberAxis;
import javafx.scene.layout.Pane;

public class Axes extends Pane {
    private NumberAxis xAxis;
    private NumberAxis yAxis;
    private double xMin, xMax, yMin, yMax, xTickUnit, yTickUnit;
    private int axesWidth, axesHeight;

    public Axes() {
        this.xMin = 0;
        this.xMax = 0;
        this.yMin = 0;
        this.yMax = 0;
        this.xTickUnit = 0;
        this.yTickUnit = 0;
        this.axesWidth = 0;
        this.axesHeight = 0;
    }

    public NumberAxis getXAxis() {
        return xAxis;
    }

    public NumberAxis getYAxis() {
        return yAxis;
    }

    public int getAxesWidth() {
        return axesWidth;
    }

    public void setAxesWidth(int axesWidth) {
        this.axesWidth = axesWidth;
    }

    public int getAxesHeight() {
        return axesHeight;
    }

    public void setAxesHeight(int axesHeight) {
        this.axesHeight = axesHeight;
    }

    public double getxMin() {
        return xMin;
    }

    public void setxMin(double xMin) {
        this.xMin = xMin;
    }

    public double getxMax() {
        return xMax;
    }

    public void setxMax(double xMax) {
        this.xMax = xMax;
    }

    public double getyMin() {
        return yMin;
    }

    public void setyMin(double yMin) {
        this.yMin = yMin;
    }

    public double getyMax() {
        return yMax;
    }

    public void setyMax(double yMax) {
        this.yMax = yMax;
    }

    public double getxTickUnit() {
        return xTickUnit;
    }

    public void setxTickUnit(double xTickUnit) {
        this.xTickUnit = xTickUnit;
    }

    public double getyTickUnit() {
        return yTickUnit;
    }

    public void setyTickUnit(double yTickUnit) {
        this.yTickUnit = yTickUnit;
    }

}

边框窗格的中心应该是启动应用程序默认轴，单击“应用”按钮后应显示我想要的轴。它没有更新它，所以我的问题是：我做错了什么？或者我在代码中缺少什么？感谢。

1 个答案:

答案 0 :(得分：2)

您遇到的第一个问题是，每次单击“应用”按钮时，都会添加NumberAxis和LineChart的新实例。这些实例不会添加到场景图中，而您已经拥有的那些（使用@FXML注释并由FXMLLoader创建的实例）不会收到任何通知。

所以你必须删除它：

public void applyButtonClicked(ActionEvent event) {
    xAxis = new NumberAxis(axes.getxMin(), axes.getxMax(), axes.getxTickUnit());
    yAxis = new NumberAxis(axes.getyMin(), axes.getyMax(), axes.getyTickUnit());
    axesTest = new LineChart<Number, Number>(xAxis, yAxis);
}

然后设置：

public void applyButtonClicked(ActionEvent event) {
    //xAxis = new NumberAxis(axes.getxMin(), axes.getxMax(), axes.getxTickUnit());
    xAxis.setLowerBound(axes.getxMin());
    xAxis.setUpperBound(axes.getxMax());
    xAxis.setTickUnit(axes.getxTickUnit());

    //yAxis = new NumberAxis(axes.getyMin(), axes.getyMax(), axes.getyTickUnit());
    yAxis.setLowerBound(axes.getyMin());
    yAxis.setUpperBound(axes.getyMax());
    yAxis.setTickUnit(axes.getyTickUnit());

    //axesTest = new LineChart<Number, Number>(xAxis, yAxis);
}

第二个问题：默认情况下，轴启用了自动范围，因此所有应用的更改都将被覆盖。

所以只需禁用它：

public void initialize() {
    axes = new Axes();

    xAxis.setAutoRanging(false);
    yAxis.setAutoRanging(false);
}

最后，你无法绑定layoutX属性，因为它已经绑定了。而是使用translateX属性：

yAxis.translateXProperty().bind(Bindings.subtract((axes.getAxesWidth() / 2) + 1, yAxis.widthProperty()));

CHART

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