Class: ZoomControls

Blockly.ZoomControls

class   static

Class for a zoom controls.

Constructor

ZoomControls

new ZoomControls(workspace)

Parameter
workspace	The workspace to sit in. Value must not be null.

Implements

Blockly.IPositionable

Property

id

string

The unique id for this component that is used to register with the ComponentManager.

Methods

createDom

createDom() returns SVGElement

Create the zoom controls.

Returns

non-null SVGElement The zoom controls SVG group.

dispose

dispose()

Disposes of this zoom controls. Unlink from all DOM elements to prevent memory leaks.

getBoundingRectangle

getBoundingRectangle() returns Blockly.utils.Rect

Returns the bounding rectangle of the UI element in pixel units relative to the Blockly injection div.

Implements

Blockly.IPositionable#getBoundingRectangle

Returns

nullable Blockly.utils.Rect The UI elements's bounding box. Null if bounding box should be ignored by other UI elements.

init

init()

Initializes the zoom controls.

position

position(metrics, savedPositions)

Positions the zoom controls. It is positioned in the opposite corner to the corner the categories/toolbox starts at.

Parameter
metrics	Blockly.MetricsManager.UiMetrics The workspace metrics. Value must not be null.
savedPositions	Array of non-null Blockly.utils.Rect List of rectangles that are already on the workspace. Value must not be null.

Implements

Blockly.IPositionable#position