blockly > blockRendering > TopRow

blockRendering.TopRow class

An object containing information about what elements are in the top row of a block as well as sizing information for the top row. Elements in a top row can consist of corners, hats, spacers, and previous connections. After this constructor is called, the row will contain all non-spacer elements it needs.

Signature:

export declare class TopRow extends Row 

Extends: Row

Constructors

Constructor	Modifiers	Description
(constructor)(constants)		Constructs a new instance of the TopRow class

Properties

Property	Modifiers	Type	Description
ascenderHeight		number	How much the row extends up above its capline.
capline		number	The starting point for drawing the row, in the y direction. This allows us to draw hats and similar shapes that don't start at the origin. Must be non-negative (see #2820).
connection		PreviousConnection | null	The previous connection on the block, if any.
hasPreviousConnection		boolean	Whether the block has a previous connection.

Methods

Method	Modifiers	Description
endsWithElemSpacer()
hasLeftSquareCorner(block)		Returns whether or not the top row has a left square corner.
hasRightSquareCorner(_block)		Returns whether or not the top row has a right square corner.
measure()
startsWithElemSpacer()