Example usage for javafx.scene.canvas Canvas Canvas

Introduction

In this page you can find the example usage for javafx.scene.canvas Canvas Canvas.

Prototype

public Canvas(double width, double height) 

Source Link

Document

Creates a new instance of Canvas with the given size.

Usage

From source file:Main.java

/**
 * Creates an image canvas with the given width and height.
 *///from w ww.j a  v  a 2  s . c  o m
public static Canvas createImageCanvas(String url, double width, double height) {
    ImageView img = new ImageView(new Image(url, width, height, false, true));
    final Canvas canvas = new Canvas(width, height);
    final GraphicsContext gc = canvas.getGraphicsContext2D();
    gc.drawImage(img.getImage(), 0, 0);

    return canvas;
}

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From source file:Main.java

@Override
public void start(Stage stage) {
    Canvas canvas = new Canvas(300, 100);

    GraphicsContext gc = canvas.getGraphicsContext2D();

    gc.setLineWidth(2.0);/* w  ww .ja v  a  2 s.  c o  m*/
    gc.setFill(Color.RED);

    gc.strokeRoundRect(10, 10, 50, 50, 10, 10);

    gc.fillOval(70, 10, 50, 20);

    gc.strokeText("Hello Canvas", 150, 20);

    Pane root = new Pane();
    root.getChildren().add(canvas);
    Scene scene = new Scene(root);
    stage.setScene(scene);
    stage.setTitle("");
    stage.show();
}

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From source file:ijfx.ui.previewToolbar.DefaultWidget.java

@Override
public Image getImage(PreviewService previewService, int size) {

    if (image != null)
        return image;

    if (previewService == null)
        return null;

    if (previewService.getImageDisplayService().getActiveDataset() == null) {
        return null;
    } else if (this.getIcon().equals("preview")) {
        try {/*from ww w.  jav a  2s. c om*/
            previewService.setParameters(-1, -1, size, size);
            return previewService.getImageDisplay(action, this.getParameters());

        } catch (Exception e) {
            e.printStackTrace();
            FontAwesomeIconView fontAwesomeIconView = new FontAwesomeIconView(FontAwesomeIcon.AMBULANCE);
            return FontAwesomeIconUtils.FAItoImage(fontAwesomeIconView, size);
        }
    }

    else if (getIcon().startsWith("char:")) {
        Canvas canvas = new Canvas(size, size);
        GraphicsContext graphicsContext2D = canvas.getGraphicsContext2D();

        graphicsContext2D.setFill(Color.WHITE);
        graphicsContext2D.setFont(javafx.scene.text.Font.font("Arial", size));
        graphicsContext2D.fillText(getIcon().substring(5), size / 3, size * 0.8);

        final SnapshotParameters params = new SnapshotParameters();
        params.setFill(Color.TRANSPARENT);
        //            final WritableImage snapshot = canvas.snapshot(params, null);

        Task<WritableImage> getIcon = new CallbackTask<Canvas, WritableImage>(canvas)
                .run(input -> input.snapshot(params, null));

        Platform.runLater(getIcon);

        try {
            // Image image = new Ima

            image = getIcon.get();
            return image;
        } catch (InterruptedException ex) {
            Logger.getLogger(DefaultWidget.class.getName()).log(Level.SEVERE, null, ex);
        } catch (ExecutionException ex) {
            Logger.getLogger(DefaultWidget.class.getName()).log(Level.SEVERE, null, ex);
        }
        return null;
    }

    //Check if icon exist in Enumeration
    else if (Arrays.stream(FontAwesomeIcon.values()).filter(e -> e.name().equals(icon)).count() > 0) {

        FontAwesomeIconView fontAwesomeIconView = new FontAwesomeIconView(FontAwesomeIcon.valueOf(icon));
        return FontAwesomeIconUtils.FAItoImage(fontAwesomeIconView, size);
    } else {
        image = new Image(getClass().getResource(icon).toExternalForm(), size, size, true, true);
        return image;
    }
}

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