Package javafx.scene.canvas

Class Canvas

java.lang.Object
javafx.scene.Node
javafx.scene.canvas.Canvas
All Implemented Interfaces:
LayoutMeasurable, LayoutMeasurableMixin, HasBlendModeProperty, HasClipProperty, HasEffectProperty, HasLayoutXProperty, HasLayoutYProperty, HasManagedProperty, HasMouseTransparentProperty, HasOnMouseClickedProperty, HasOpacityProperty, HasParentProperty, HasVisibleProperty, Styleable, EventTarget, INode
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:

  • Property Details

  • Field Details

  • Constructor Details

    • 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 Details

    • 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 width property.
      Property description:
      Defines the width of the canvas.
      Default value:
      0.0
      Parameters:
      value - the value for the width property
      See Also:

    • getWidth

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

    • widthProperty

      public final DoubleProperty widthProperty()
      Defines the width of the canvas.
      Default value:
      0.0
      Returns:
      the width property
      See Also:

    • setHeight

      public final void setHeight(double value)
      Sets the value of the height property.
      Property description:
      Defines the height of the canvas.
      Default value:
      0.0
      Parameters:
      value - the value for the height property
      See Also:

    • getHeight

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

    • heightProperty

      public final DoubleProperty heightProperty()
      Defines the height of the canvas.
      Default value:
      0.0
      Returns:
      the height property
      See Also:

    • impl_computeGeomBounds

      public BaseBounds impl_computeGeomBounds(BaseBounds bounds, BaseTransform tx)
      Description copied from class: Node
      Computes the geometric bounds for this Node. This method is abstract and must be implemented by each Node subclass.
      Specified by:
      impl_computeGeomBounds in class Node