blockly > blockRendering > MarkerSvg
blockRendering.MarkerSvg class
Class for a marker, containing methods for graphically rendering a marker as SVG.
Signature:
export declare class MarkerSvg
Constructors
| Constructor | Modifiers | Description |
|---|---|---|
| (constructor)(workspace, constants, marker) | Constructs a new instance of the MarkerSvg class |
Properties
| Property | Modifiers | Type | Description |
|---|---|---|---|
| colour_ | string | ||
| constants_ | protected |
ConstantProvider | The constants necessary to draw the marker. |
| currentMarkerSvg | SVGElement | null | The current SVG element for the marker. | |
| markerBlock_ | protected |
SVGPathElement | null | |
| markerInput_ | protected |
SVGPathElement | null | |
| markerSvg_ | protected |
SVGGElement | null | The root SVG group containing the marker. |
| markerSvgLine_ | protected |
SVGRectElement | null | |
| markerSvgRect_ | protected |
SVGRectElement | null | |
| svgGroup_ | protected |
SVGGElement | null |
Methods
| Method | Modifiers | Description |
|---|---|---|
| applyColour_(_curNode) | protected |
Apply the marker's colour. |
| createDom() | Create the DOM element for the marker. | |
| createDomInternal_() | protected |
Create the marker SVG. |
| dispose() | Dispose of this marker. | |
| draw(oldNode, curNode) | Update the marker. | |
| getBlinkProperties_() | protected |
Get the properties to make a marker blink. |
| getMarker() | Get the marker. | |
| getSvgRoot() | Return the root node of the SVG or null if none exists. | |
| hide() | Hide the marker. | |
| isCursor() | 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. | |
| positionBlock_(width, markerOffset, markerHeight) | protected |
Position the marker for a block. Displays an outline of the top half of a rectangle around a block. |
| positionInput_(connection) | protected |
Position the marker for an input connection. Displays a filled in puzzle piece. |
| positionLine_(x, y, width) | protected |
Move and show the marker at the specified coordinate in workspace units. Displays a horizontal line. |
| positionOutput_(width, height, connectionShape) | protected |
Position the marker for an output connection. Displays a puzzle outline and the top and bottom path. |
| positionPrevious_(width, markerOffset, markerHeight, connectionShape) | protected |
Position the marker for a previous connection. Displays a half rectangle with a notch in the top to represent the previous connection. |
| positionRect_(x, y, width, height) | protected |
Move and show the marker at the specified coordinate in workspace units. Displays a filled in rectangle. |
| setParent_(newParent) | protected |
Attaches the SVG root of the marker to the SVG group of the parent. |
| showAtLocation_(curNode) | protected |
Update the marker's visible state based on the type of curNode.. |
| showCurrent_() | protected |
Show the current marker. |
| showWithBlock_(curNode) | protected |
Position and display the marker for a block. |
| showWithCoordinates_(curNode) | protected |
Position and display the marker for a workspace coordinate. This is a horizontal line. |
| showWithField_(curNode) | protected |
Position and display the marker for a field. This is a box around the field. |
| showWithInput_(curNode) | protected |
Position and display the marker for an input. This is a puzzle piece. |
| showWithNext_(curNode) | protected |
Position and display the marker for a next connection. This is a horizontal line. |
| showWithOutput_(curNode) | protected |
Position and display the marker for an output connection. |
| showWithPrevious_(curNode) | protected |
Position and display the marker for a previous connection. |
| showWithStack_(curNode) | protected |
Position and display the marker for a stack. This is a box with extra padding around the entire stack of blocks. |