जब मैं एक चार्ट क्षेत्र का चयन करता हूं तो मेरा ज़ूम "छोटा स्विच" प्राप्त करता है। उदाहरण के लिए यदि टिक टिक 3 से टिक 6 तक चयन करें तो मैं निचले बाउंड के रूप में प्राप्त करता हूं: 3.67 और ऊपरी बाउंड 6.74।
इसे कैसे जोड़ेंगे ?
किसी भी मदद की वास्तव में सराहना की।
package testjavafxzoom;
import javafx.application.Application;
import javafx.beans.property.SimpleDoubleProperty;
import javafx.event.EventHandler;
import javafx.scene.chart.CategoryAxis;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.XYChart;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.chart.LineChart;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.BorderPane;
import javafx.scene.paint.Color;
import javafx.scene.shape.LineTo;
import javafx.scene.shape.MoveTo;
import javafx.scene.shape.Path;
import javafx.scene.shape.Rectangle;
public class Zoom01 extends Application {
Path path;//Add path for freehand
BorderPane pane;
Rectangle rect;
SimpleDoubleProperty rectinitX = new SimpleDoubleProperty();
SimpleDoubleProperty rectinitY = new SimpleDoubleProperty();
SimpleDoubleProperty rectX = new SimpleDoubleProperty();
SimpleDoubleProperty rectY = new SimpleDoubleProperty();
@Override
public void start(Stage stage) {
System.out.println("Java Version : " + com.sun.javafx.runtime.VersionInfo.getVersion());
System.out.println("Java getHudsonBuildNumber: " + com.sun.javafx.runtime.VersionInfo.getHudsonBuildNumber());
System.out.println("Java getReleaseMilestone : " + com.sun.javafx.runtime.VersionInfo.getReleaseMilestone());
System.out.println("Java getRuntimeVersion : " + com.sun.javafx.runtime.VersionInfo.getRuntimeVersion());
stage.setTitle("Lines plot");
//final CategoryAxis xAxis = new CategoryAxis();
final NumberAxis xAxis = new NumberAxis(1, 12, 1);
final NumberAxis yAxis = new NumberAxis(0.53000, 0.53910, 0.0005);
yAxis.setTickLabelFormatter(new NumberAxis.DefaultFormatter(yAxis) {
@Override
public String toString(Number object) {
return String.format("%7.5f", object);
}
});
//final LineChart<String, Number> lineChart = new LineChart<String, Number>(xAxis, yAxis);
final LineChart<Number, Number> lineChart = new LineChart<Number, Number>(xAxis, yAxis);
//lineChart.setTitle("Stock quotes");
lineChart.setCreateSymbols(false);
lineChart.setAlternativeRowFillVisible(false);
lineChart.setAnimated(true);
XYChart.Series series1 = new XYChart.Series();
//series1.setName("Stock 1");
series1.getData().add(new XYChart.Data(1, 0.53185));
series1.getData().add(new XYChart.Data(2, 0.532235));
series1.getData().add(new XYChart.Data(3, 0.53234));
series1.getData().add(new XYChart.Data(4, 0.538765));
series1.getData().add(new XYChart.Data(5, 0.53442));
series1.getData().add(new XYChart.Data(6, 0.534658));
series1.getData().add(new XYChart.Data(7, 0.53023));
series1.getData().add(new XYChart.Data(8, 0.53001));
series1.getData().add(new XYChart.Data(9, 0.53589));
series1.getData().add(new XYChart.Data(10, 0.53476));
series1.getData().add(new XYChart.Data(11, 0.530123));
series1.getData().add(new XYChart.Data(12, 0.53035));
pane = new BorderPane();
pane.setCenter(lineChart);
//Scene scene = new Scene(lineChart, 800, 600);
Scene scene = new Scene(pane, 800, 600);
lineChart.getData().addAll(series1);
stage.setScene(scene);
path = new Path();
path.setStrokeWidth(1);
path.setStroke(Color.BLACK);
scene.setOnMouseClicked(mouseHandler);
scene.setOnMouseDragged(mouseHandler);
scene.setOnMouseEntered(mouseHandler);
scene.setOnMouseExited(mouseHandler);
scene.setOnMouseMoved(mouseHandler);
scene.setOnMousePressed(mouseHandler);
scene.setOnMouseReleased(mouseHandler);
//root.getChildren().add(lineChart);
pane.getChildren().add(path);
rect = new Rectangle();
rect.setFill(Color.web("blue", 0.1));
rect.setStroke(Color.BLUE);
rect.setStrokeDashOffset(50);
rect.widthProperty().bind(rectX.subtract(rectinitX));
rect.heightProperty().bind(rectY.subtract(rectinitY));
pane.getChildren().add(rect);
stage.show();
}
EventHandler<MouseEvent> mouseHandler = new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent mouseEvent) {
if (mouseEvent.getEventType() == MouseEvent.MOUSE_PRESSED) {
rect.setX(mouseEvent.getX());
rect.setY(mouseEvent.getY());
rectinitX.set(mouseEvent.getX());
rectinitY.set(mouseEvent.getY());
} else if (mouseEvent.getEventType() == MouseEvent.MOUSE_DRAGGED) {
rectX.set(mouseEvent.getX());
rectY.set(mouseEvent.getY());
} else if (mouseEvent.getEventType() == MouseEvent.MOUSE_RELEASED) {
System.out.println("Zoom bounds : [" + rectinitX.get()+", "+rectinitY.get()+"] ["+ rectX.get()+", "+rectY.get()+"]");
System.out.println("TODO: Determine bound ranges according these zoom coordinates.n");
// TODO: Determine bound ranges according this zoom coordinates.
//LineChart<String, Number> lineChart = (LineChart<String, Number>) pane.getCenter();
LineChart<Number, Number> lineChart = (LineChart<Number, Number>) pane.getCenter();
// Zoom in Y-axis by changing bound range.
NumberAxis yAxis = (NumberAxis) lineChart.getYAxis();
yAxis.setLowerBound(0.532);
yAxis.setUpperBound(0.538);
// Zoom in X-axis by removing first and last data values.
// Note: Maybe better if categoryaxis is replaced by numberaxis then setting the
// LowerBound and UpperBound will be avaliable.
/*
XYChart.Series series1 = lineChart.getData().get(0);
if (!series1.getData().isEmpty()) {
series1.getData().remove(0);
series1.getData().remove(series1.getData().size() - 1);
}
*/
NumberAxis xAxis = (NumberAxis) lineChart.getXAxis();
System.out.println("(a) xAxis.getLowerBound() "+xAxis.getLowerBound()+" "+xAxis.getUpperBound());
double Tgap = xAxis.getWidth()/(xAxis.getUpperBound() - xAxis.getLowerBound());
double newXlower, newXupper;
newXlower = (rectinitX.get()/Tgap)+xAxis.getLowerBound();
newXupper = (rectX.get()/Tgap)+xAxis.getLowerBound();
if (newXupper > xAxis.getUpperBound())
newXupper = xAxis.getUpperBound();
xAxis.setLowerBound( newXlower );
xAxis.setUpperBound( newXupper );
System.out.println("(b) xAxis.getLowerBound() "+xAxis.getLowerBound()+" "+xAxis.getUpperBound());
// Hide the rectangle
rectX.set(0);
rectY.set(0);
}
}
};
public static void main(String[] args) {
launch(args);
}
}
उत्तर:
जवाब के लिए 5 № 1आपने दृश्य को माउस ईवेंट संलग्न किया है। इसलिए mouseEvent.getX() आपको दृश्य के सापेक्ष निर्देशांक देता है। लेकिन आपका सूत्र उन्हें सापेक्ष समन्वय के रूप में उपयोग करता है xAxis नोड। आपको ध्यान में रखना होगा xAxis दृश्य पर स्थान।
अगली विधि का परिचय दें:
// summ layout shift against parent until we ascend to scene
private static double getSceneShift(Node node) {
double shift = 0;
do {
shift += node.getLayoutX();
node = node.getParent();
} while (node != null);
return shift;
}
और तदनुसार अपनी गणना बदलें:
double xAxisShift = getSceneShift(xAxis);
newXlower = ((rectinitX.get() - xAxisShift) / Tgap) + xAxis.getLowerBound();
newXupper = ((rectX.get() - xAxisShift) / Tgap) + xAxis.getLowerBound();