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JavaFX canvas: Atrybut obwiedni ‘dash offset’

Atrybut: dash offset

Typ: double

Wartość domyślna: 0.0

Getter: double getLineDashOffset()

Setter: void setLineDashOffset(double ...)

Save/restore: true

Opis: Przesunięcie początku rysowania linii przerywanej w tablicy dashes.

Atrybut obwiedni ‘dash offset’

Klasa Listing25_47

Ściągnij klasę Listing25_47

package rozdzial25c;

import javafx.application.Application;
import javafx.application.Platform;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.paint.Color;
import javafx.scene.shape.StrokeLineCap;
import javafx.stage.Stage;

public class Listing25_47 extends Application {

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

    @Override
    public void start(Stage stage) {
        try {
            Group root = new Group();
            Canvas cv = new Canvas(550, 250);
            GraphicsContext gc = cv.getGraphicsContext2D();
            //-
            gc.beginPath();
            gc.setStroke(Color.GRAY);
            gc.setLineWidth(1);
            gc.strokeLine(50, 40, 50, 110);
            //-
            gc.setStroke(Color.BLUE);
            gc.setLineWidth(10);
            gc.setLineCap(StrokeLineCap.BUTT);
            //-
            gc.setLineDashOffset(15);
            gc.setLineDashes(10, 20, 10, 20);
            gc.beginPath();
            gc.moveTo(50, 50);
            gc.lineTo(500, 50);
            gc.stroke();
            //-
            gc.setLineDashOffset(25);
            gc.setLineDashes(15, 30, 15, 30);
            gc.beginPath();
            gc.moveTo(50, 100);
            gc.lineTo(500, 100);
            gc.stroke();
            //-
            double d = gc.getLineDashOffset();
            System.out.print(d);
            //-
            root.getChildren().add(cv);
            Scene scene = new Scene(root);
            stage.setScene(scene);
            stage.setTitle("Atrybut obwiedni 'dash offset'");
            stage.setOnCloseRequest(e -> Platform.exit());
            stage.show();

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}          
    25.0
Atrybut obwiedni 'dash offset'
Rys. 25_53. atrybut obwiedni ‘dash offset’