Class: MarkerSvg

Blockly.blockRendering.MarkerSvg

class   static

Class for a marker.

Constructor

MarkerSvg

new MarkerSvg(workspace, constants, marker)

Parameter
workspace	The workspace the marker belongs to. Value must not be null.
constants	The constants for the renderer. Value must not be null.
marker	The marker to draw. Value must not be null.

Properties

colour_

string

The colour of the marker.

constants_

protected

Blockly.blockRendering.ConstantProvider

The constants necessary to draw the marker.

currentMarkerSvg

Element

The current SVG element for the marker.

markerBlock_

protected

nullable SVGPathElement

markerInput_

protected

nullable SVGPathElement

markerSvg_

protected

SVGGElement

The root SVG group containing the marker.

markerSvgLine_

protected

nullable SVGRectElement

markerSvgRect_

protected

nullable SVGRectElement

svgGroup_

protected

nullable SVGGElement

Methods

applyColour_

protected

applyColour_(_curNode)

Apply the marker's colour.

Parameter
_curNode	Blockly.ASTNode The node that we want to draw the marker for. Value must not be null.

createDom

package

createDom() returns SVGElement

Create the DOM element for the marker.

Returns

non-null SVGElement The marker controls SVG group.

createDomInternal_

protected

createDomInternal_() returns Element

Create the marker SVG.

Returns

Element The SVG node created.

dispose

dispose()

Dispose of this marker.

draw

draw(oldNode, curNode)

Update the marker.

Parameter
oldNode	Blockly.ASTNode The previous node the marker was on or null.
curNode	Blockly.ASTNode The node that we want to draw the marker for.

getBlinkProperties_

protected

getBlinkProperties_() returns Object

Get the properties to make a marker blink.

Returns

non-null Object The object holding attributes to make the marker blink.

getMarker

getMarker() returns Blockly.Marker

Get the marker.

Returns

non-null Blockly.Marker The marker to draw for.

getSvgRoot

getSvgRoot() returns SVGElement

Return the root node of the SVG or null if none exists.

Returns

SVGElement The root SVG node.

hide

hide()

Hide the marker.

isCursor

isCursor() returns boolean

True if the marker should be drawn as a cursor, false otherwise. A cursor is drawn as a flashing line. A marker is drawn as a solid line.

Returns

boolean True if the marker is a cursor, false otherwise.

positionBlock_

protected

positionBlock_(width, markerOffset, markerHeight)

Position the marker for a block. Displays an outline of the top half of a rectangle around a block.

Parameter
width	number The width of the block.
markerOffset	number The extra padding for around the block.
markerHeight	number The height of the marker.

positionInput_

protected

positionInput_(connection)

Position the marker for an input connection. Displays a filled in puzzle piece.

Parameter
connection	Blockly.RenderedConnection The connection to position marker around. Value must not be null.

positionLine_

protected

positionLine_(x, y, width)

Move and show the marker at the specified coordinate in workspace units. Displays a horizontal line.

Parameter
x	number The new x, in workspace units.
y	number The new y, in workspace units.
width	number The new width, in workspace units.

positionOutput_

protected

positionOutput_(width, height, connectionShape)

Position the marker for an output connection. Displays a puzzle outline and the top and bottom path.

Parameter
width	number The width of the block.
height	number The height of the block.
connectionShape	Object The shape object for the connection. Value must not be null.

positionPrevious_

protected

positionPrevious_(width, markerOffset, markerHeight, connectionShape)

Position the marker for a previous connection. Displays a half rectangle with a notch in the top to represent the previous connection.

Parameter
width	number The width of the block.
markerOffset	number The offset of the marker from around the block.
markerHeight	number The height of the marker.
connectionShape	Object The shape object for the connection. Value must not be null.

positionRect_

protected

positionRect_(x, y, width, height)

Move and show the marker at the specified coordinate in workspace units. Displays a filled in rectangle.

Parameter
x	number The new x, in workspace units.
y	number The new y, in workspace units.
width	number The new width, in workspace units.
height	number The new height, in workspace units.

setParent_

protected

setParent_(newParent)

Attaches the SVG root of the marker to the SVG group of the parent.

Parameter
newParent	Blockly.IASTNodeLocationSvg The workspace, field, or block that the marker SVG element should be attached to. Value must not be null.

showAtLocation_

protected

showAtLocation_(curNode)

Update the marker's visible state based on the type of curNode..

Parameter
curNode	Blockly.ASTNode The node that we want to draw the marker for. Value must not be null.

showCurrent_

protected

showCurrent_()

Show the current marker.

showWithBlock_

protected

showWithBlock_(curNode)

Position and display the marker for a block.

Parameter
curNode	Blockly.ASTNode The node to draw the marker for. Value must not be null.

showWithCoordinates_

protected

showWithCoordinates_(curNode)

Position and display the marker for a workspace coordinate. This is a horizontal line.

Parameter
curNode	Blockly.ASTNode The node to draw the marker for. Value must not be null.

showWithField_

protected

showWithField_(curNode)

Position and display the marker for a field. This is a box around the field.

Parameter
curNode	Blockly.ASTNode The node to draw the marker for. Value must not be null.

showWithInput_

protected

showWithInput_(curNode)

Position and display the marker for an input. This is a puzzle piece.

Parameter
curNode	Blockly.ASTNode The node to draw the marker for. Value must not be null.

showWithNext_

protected

showWithNext_(curNode)

Position and display the marker for a next connection. This is a horizontal line.

Parameter
curNode	Blockly.ASTNode The node to draw the marker for. Value must not be null.

showWithOutput_

protected

showWithOutput_(curNode)

Position and display the marker for an output connection.

Parameter
curNode	Blockly.ASTNode The node to draw the marker for. Value must not be null.

showWithPrevious_

protected

showWithPrevious_(curNode)

Position and display the marker for a previous connection.

Parameter
curNode	Blockly.ASTNode The node to draw the marker for. Value must not be null.

showWithStack_

protected

showWithStack_(curNode)

Position and display the marker for a stack. This is a box with extra padding around the entire stack of blocks.

Parameter
curNode	Blockly.ASTNode The node to draw the marker for. Value must not be null.