Canvas

Canvas

Creates an HTML Canvas element for dynamically drawn content.

Constructor

# new Canvas(parent, x, y, w, h)

Constructor
Parameters:
Name Type Description
parent HTMLElement The element to add this canvas to.
x number The x position of the canvas. Default 0.
y number The y position of the canvas. Default 0.
w number The width of the canvas. Default 200.
h number The height of the canvas. Default 100.
Source:
Example 
const panel = new Panel(document.body, 20, 20, 240, 240);
const canvas = new Canvas(panel, 20, 20, 200, 200);
canvas.context.fillStyle = "red";
canvas.context.beginPath();
canvas.context.arc(100, 100, 100, 0, Math.PI * 2);
canvas.context.fill();

Extends

Classes

Canvas

Members

# context

Returns the current 2d drawing context of the canvas (read only).
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# enabled

Sets and gets whether or not this component is enabled. Non-enabled components will be faded out and not respond to events.
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# height

Sets and gets the height of this component.
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# width

Sets and gets the width of this component.
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# x

Sets and gets the x position of this component.
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# y

Sets and gets the y position of this component.
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Methods

# getContext()

Gets the current 2d drawing context of the canvas (read only).
Source:
Returns:
This 2d drawing context.

# getEnabled()

Gets whether the component is enabled.
Overrides:
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Returns:
Whether or not the component is enabled.

# getHeight()

Gets the height of the component.
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Returns:
The height of the component.

# getWidth()

Gets the width of the component.
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Returns:
The width of the component.

# getX()

Gets the x position of the component.
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Returns:
The x position of the component.

# getY()

Gets the y position of the component.
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Returns:
The y position of the component.

# move(x, y)

Moves the component to a specified position.
Parameters:
Name Type Description
x number The new x position of the component.
y number The new y position of the component.
Overrides:
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Returns:
This instance, suitable for chaining.

# rotate(rad)

Rotates the component.
Parameters:
Name Type Description
rad number The number of radians to rotate the component by.
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Returns:
This instance, suitable for chaining.

# rotateDeg(deg)

Rotates the component.
Parameters:
Name Type Description
deg number The number of degrees to rotate the component by.
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Returns:
This instance, suitable for chaining.

# setEnabled(enabled)

Sets the enabled state of this component.
Parameters:
Name Type Description
enabled boolean Whether or not the component will be enabled.
Overrides:
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Returns:
This instance, suitable for chaining.

# setHeight(height)

Sets the height of this component.
Parameters:
Name Type Description
height number The height of this component.
Overrides:
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Returns:
This instance, suitable for chaining.

# setSize(w, h)

Sizes the component.
Parameters:
Name Type Description
w number The new width of the component.
h number The new height of the component.
Overrides:
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Returns:
This instance, suitable for chaining.

# setWidth(width)

Sets the width of this component.
Parameters:
Name Type Description
width number The width of this component.
Overrides:
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Returns:
This instance, suitable for chaining.

# setX(x)

Sets the x position of this component.
Parameters:
Name Type Description
x number The x position of this component.
Overrides:
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Returns:
This instance, suitable for chaining.

# setY(y)

Sets the y position of this component.
Parameters:
Name Type Description
y number The y position of this component.
Overrides:
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Returns:
this instance, suitable for chaining.