Namespace: blockRendering

Blockly.blockRendering

namespace   static

The top level namespace for block rendering.

Classes

BottomRow

An object containing information about what elements are in the bottom row of a block as well as spacing information for the top row. Elements in a bottom row can consist of corners, spacers and next connections.

Connection

The base class to represent a connection and the space that it takes up on the block.

ConstantProvider

An object that provides constants for rendering blocks.

Debug

An object that renders rectangles and dots for debugging rendering code.

Drawer

An object that draws a block based on the given rendering information.

ExternalValueInput

An object containing information about the space an external value input takes up during rendering

Field

An object containing information about the space a field takes up during rendering

Hat

An object containing information about the space a hat takes up during rendering.

Icon

An object containing information about the space an icon takes up during rendering

InlineInput

An object containing information about the space an inline input takes up during rendering

InputConnection

The base class to represent an input that takes up space on a block during rendering

InputRow

An object containing information about a row that holds one or more inputs.

InRowSpacer

An object containing information about a spacer between two elements on a row.

JaggedEdge

An object containing information about the jagged edge of a collapsed block takes up during rendering

MarkerSvg

Class for a marker.

Measurable

The base class to represent a part of a block that takes up space during rendering. The constructor for each non-spacer Measurable records the size of the block element (e.g. field, statement input).

NextConnection

An object containing information about the space a next connection takes up during rendering.

OutputConnection

An object containing information about the space an output connection takes up during rendering.

PathObject

An object that handles creating and setting each of the SVG elements used by the renderer.

PreviousConnection

An object containing information about the space a previous connection takes up during rendering.

Renderer

The base class for a block renderer.

RenderInfo

An object containing all sizing information needed to draw this block.

This measure pass does not propagate changes to the block (although fields may choose to rerender when getSize() is called). However, calling it repeatedly may be expensive.

RoundCorner

An object containing information about the space a rounded corner takes up during rendering.

Row

An object representing a single row on a rendered block and all of its subcomponents.

SpacerRow

An object containing information about a spacer between two rows.

SquareCorner

An object containing information about the space a square corner takes up during rendering.

StatementInput

An object containing information about the space a statement input takes up during rendering

TopRow

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.

Interface

IPathObject

Enumeration

Types

static

number

Types of rendering elements.

Value
NONE
FIELD
HAT
ICON
SPACER
BETWEEN_ROW_SPACER
IN_ROW_SPACER
EXTERNAL_VALUE_INPUT
INPUT
INLINE_INPUT
STATEMENT_INPUT
CONNECTION
PREVIOUS_CONNECTION
NEXT_CONNECTION
OUTPUT_CONNECTION
CORNER
LEFT_SQUARE_CORNER
LEFT_ROUND_CORNER
RIGHT_SQUARE_CORNER
RIGHT_ROUND_CORNER
JAGGED_EDGE
ROW
TOP_ROW
BOTTOM_ROW
INPUT_ROW

Properties

Types

static

number

Types of rendering elements.

Value
NONE
FIELD
HAT
ICON
SPACER
BETWEEN_ROW_SPACER
IN_ROW_SPACER
EXTERNAL_VALUE_INPUT
INPUT
INLINE_INPUT
STATEMENT_INPUT
CONNECTION
PREVIOUS_CONNECTION
NEXT_CONNECTION
OUTPUT_CONNECTION
CORNER
LEFT_SQUARE_CORNER
LEFT_ROUND_CORNER
RIGHT_SQUARE_CORNER
RIGHT_ROUND_CORNER
JAGGED_EDGE
ROW
TOP_ROW
BOTTOM_ROW
INPUT_ROW

useDebugger

package   static

boolean

Whether or not the debugger is turned on.

Methods

init

package   static

init(name, theme, opt_rendererOverrides) returns Blockly.blockRendering.Renderer

Initialize anything needed for rendering (constants, etc).

Parameter
name	string Name of the renderer to initialize. Value must not be null.
theme	Blockly.Theme The workspace theme object. Value must not be null.
opt_rendererOverrides	Optional Object Rendering constant overrides.

Returns

non-null Blockly.blockRendering.Renderer The new instance of a renderer. Already initialized.

register

static

register(name, rendererClass)

Registers a new renderer.

Parameter
name	string The name of the renderer.
rendererClass	function() The new renderer class to register. Value must not be null.

Throws

Error if a renderer with the same name has already been registered.

startDebugger

package   static

startDebugger()

Turn on the blocks debugger.

stopDebugger

package   static

stopDebugger()

Turn off the blocks debugger.

unregister

static

unregister(name)

Unregisters the renderer registered with the given name.

Parameter
name	string The name of the renderer.