Module javafx.graphics
Package javafx.scene.canvas

Class Canvas

  • All Implemented Interfaces:
    Styleable, EventTarget
    public class Canvas
extends Node
    Canvas is an image that can be drawn on using a set of graphics commands provided by a GraphicsContext.

    A Canvas node is constructed with a width and height that specifies the size of the image into which the canvas drawing commands are rendered. All drawing operations are clipped to the bounds of that image.

    Example:

    import javafx.scene.*;
import javafx.scene.paint.*;
import javafx.scene.canvas.*;

Group root = new Group();
Scene s = new Scene(root, 300, 300, Color.BLACK);

final Canvas canvas = new Canvas(250,250);
GraphicsContext gc = canvas.getGraphicsContext2D();

gc.setFill(Color.BLUE);
gc.fillRect(75,75,100,100);

root.getChildren().add(canvas);
    Since:
    JavaFX 2.2
    See Also:
    GraphicsContext

    • Constructor Detail

      • Canvas

        public Canvas()
        Creates an empty instance of Canvas.

      • Canvas

        public Canvas​(double width,
              double height)
        Creates a new instance of Canvas with the given size.
        Parameters:
        width - width of the canvas
        height - height of the canvas

    • Method Detail

      • getGraphicsContext2D

        public GraphicsContext getGraphicsContext2D()
        returns the GraphicsContext associated with this Canvas.
        Returns:
        the GraphicsContext associated with this Canvas

      • setWidth

        public final void setWidth​(double value)
        Sets the value of the property width.
        Property description:
        Defines the width of the canvas.
        Default value:
        0.0

      • getWidth

        public final double getWidth()
        Gets the value of the property width.
        Property description:
        Defines the width of the canvas.
        Default value:
        0.0

      • setHeight

        public final void setHeight​(double value)
        Sets the value of the property height.
        Property description:
        Defines the height of the canvas.
        Default value:
        0.0

      • getHeight

        public final double getHeight()
        Gets the value of the property height.
        Property description:
        Defines the height of the canvas.
        Default value:
        0.0