public abstract class RootRenderer extends AbstractRenderer
Modifier and Type | Field and Description |
---|---|
protected LayoutArea |
currentArea |
protected int |
currentPageNumber |
protected boolean |
immediateFlush |
childRenderers, EPS, flushed, INF, isLastRendererForModelElement, modelElement, occupiedArea, parent, positionedRenderers, properties
Constructor and Description |
---|
RootRenderer() |
Modifier and Type | Method and Description |
---|---|
void |
addChild(IRenderer renderer)
Adds a child to the current renderer
|
void |
close()
This method correctly closes the RootRenderer instance.
|
void |
flush()
Draws (flushes) the content.
|
protected abstract void |
flushSingleRenderer(IRenderer resultRenderer) |
LayoutArea |
getCurrentArea() |
LayoutResult |
layout(LayoutContext layoutContext)
This method simulates positioning of the renderer, including all of its children, and returns the LayoutResult , representing the layout result, including occupied area, status, i.e.
|
protected abstract LayoutArea |
updateCurrentArea(LayoutResult overflowResult) |
addAllProperties, alignChildHorizontally, applyAbsolutePositioningTranslation, applyAction, applyBorderBox, applyBorderBox, applyDestination, applyMargins, applyMargins, applyPaddings, applyPaddings, calculateAbsolutePdfBBox, calculateBBox, deleteOwnProperty, deleteProperty, draw, drawBackground, drawBorder, drawChildren, getBorderAreaBBox, getBorders, getChildRenderers, getDefaultProperty, getFirstYLineRecursively, getInnerAreaBBox, getMargins, getModelElement, getOccupiedArea, getOccupiedAreaBBox, getOwnProperties, getOwnProperty, getPaddings, getProperty, getProperty, getPropertyAsBoolean, getPropertyAsColor, getPropertyAsFloat, getPropertyAsFloat, getPropertyAsFont, getPropertyAsInteger, hasOwnOrModelProperty, hasOwnProperty, hasProperty, initElementAreas, isFixedLayout, isFlushed, isKeepTogether, isNotFittingHeight, isNotFittingLayoutArea, isPositioned, isRelativePosition, move, rectangleToPointsList, retrieveHeight, retrieveUnitValue, retrieveWidth, setBorders, setParent, setProperty, toString, transformPoints
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
getNextRenderer
protected boolean immediateFlush
protected LayoutArea currentArea
protected int currentPageNumber
public void addChild(IRenderer renderer)
AbstractRenderer
addChild
in interface IRenderer
addChild
in class AbstractRenderer
renderer
- a child to be added
public void flush()
public void close()
RootRenderer
instance. There might be hanging elements, like in case of Property.KEEP_WITH_NEXT
is set to true and when no consequent element has been added. This method addresses such situations.
public LayoutResult layout(LayoutContext layoutContext)
LayoutResult
, representing the layout result, including occupied area, status, i.e. if there was enough place to fit the renderer subtree, etc. LayoutResult
can be extended to return custom layout results for custom elements, e.g. TextRenderer
uses TextLayoutResult
as its result. This method can be called standalone to learn how much area the renderer subtree needs, or can be called before IRenderer.draw(DrawContext)
, to prepare the renderer to be flushed to the output stream.
layoutContext
- the description of layout area and any other additional information
public LayoutArea getCurrentArea()
protected abstract void flushSingleRenderer(IRenderer resultRenderer)
protected abstract LayoutArea updateCurrentArea(LayoutResult overflowResult)
Copyright © 1998–2016 iText Group NV. All rights reserved.