Blockly.blockRendering. Drawer
Constructor
Drawer
new Drawer(block, info)
An object that draws a block based on the given rendering information.
Parameter |
|
---|---|
block |
The block to render. Value must not be null. |
info |
Blockly.blockRendering.RenderInfo An object containing all information needed to render this block. Value must not be null. |
Property
constants_
non-null Blockly.blockRendering.ConstantProvider
The renderer's constant provider.
Methods
draw
draw()
Draw the block to the workspace. Here "drawing" means setting SVG path elements and moving fields, icons, and connections on the screen.
The pieces of the paths are pushed into arrays of "steps", which are then joined with spaces and set directly on the block. This guarantees that the steps are separated by spaces for improved readability, but isn't required.
drawBottom_
drawBottom_()
Add steps for the bottom edge of a block, possibly including a notch for the next connection
drawInlineInput_
drawInlineInput_(input)
Add steps for an inline input.
Parameter |
|
---|---|
input |
Blockly.blockRendering.InlineInput The information about the input to render. Value must not be null. |
drawInternals_
drawInternals_()
Draw the internals of the block: inline inputs, fields, and icons. These do not depend on the outer path for placement.
drawJaggedEdge_
drawJaggedEdge_(row)
Add steps for the jagged edge of a row on a collapsed block.
Parameter |
|
---|---|
row |
The row to draw the side of. Value must not be null. |
drawLeft_
drawLeft_()
Add steps for the left side of the block, which may include an output connection
drawOutline_
drawOutline_()
Create the outline of the block. This is a single continuous path.
drawRightSideRow_
drawRightSideRow_(row)
Add steps for the right side of a row that does not have value or statement input connections.
Parameter |
|
---|---|
row |
The row to draw the side of. Value must not be null. |
drawStatementInput_
drawStatementInput_(row)
Add steps for a statement input.
Parameter |
|
---|---|
row |
The row that this input belongs to. Value must not be null. |
drawTop_
drawTop_()
Add steps for the top corner of the block, taking into account details such as hats and rounded corners.
drawValueInput_
drawValueInput_(row)
Add steps for an external value input, rendered as a notch in the side of the block.
Parameter |
|
---|---|
row |
The row that this input belongs to. Value must not be null. |
hideHiddenIcons_
hideHiddenIcons_()
Hide icons that were marked as hidden.
layoutField_
layoutField_(fieldInfo)
Push a field or icon's new position to its SVG root.
Parameter |
|
---|---|
fieldInfo |
(non-null Blockly.blockRendering.Icon or non-null Blockly.blockRendering.Field) The rendering information for the field or icon. |
positionExternalValueConnection_
positionExternalValueConnection_(row)
Position the connection on an external value input, taking into account RTL and the small gap between the parent block and child block which lets the parent block's dark path show through.
Parameter |
|
---|---|
row |
The row that the connection is on. Value must not be null. |
positionInlineInputConnection_
positionInlineInputConnection_(input)
Position the connection on an inline value input, taking into account RTL and the small gap between the parent block and child block which lets the parent block's dark path show through.
Parameter |
|
---|---|
input |
Blockly.blockRendering.InlineInput The information about the input that the connection is on. |
positionNextConnection_
positionNextConnection_()
Position the next connection on a block.
positionOutputConnection_
positionOutputConnection_()
Position the output connection on a block.
positionPreviousConnection_
positionPreviousConnection_()
Position the previous connection on a block.
positionStatementInputConnection_
positionStatementInputConnection_(row)
Position the connection on a statement input, taking into account RTL and the small gap between the parent block and child block which lets the parent block's dark path show through.
Parameter |
|
---|---|
row |
The row that the connection is on. Value must not be null. |
recordSizeOnBlock_
recordSizeOnBlock_()
Save sizing information back to the block Most of the rendering information can be thrown away at the end of the render. Anything that needs to be kept around should be set in this function.