Class GridContainerRenderer

java.lang.Object

com.itextpdf.layout.renderer.AbstractRenderer

com.itextpdf.layout.renderer.BlockRenderer

com.itextpdf.layout.renderer.GridContainerRenderer

All Implemented Interfaces:

IPropertyContainer, IRenderer

public class GridContainerRenderer
extends BlockRenderer

Represents a renderer for a grid.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static final class	GridContainerRenderer.GridLayoutResult

Field Summary

Fields

Modifier and Type	Field	Description
private float	containerHeight
private float	containerWidth
private boolean	isFirstLayout

Fields inherited from class AbstractRenderer

BOTTOM_SIDE, childRenderers, EPS, flushed, INF, isLastRendererForModelElement, LEFT_SIDE, modelElement, occupiedArea, OVERLAP_EPSILON, parent, positionedRenderers, properties, RIGHT_SIDE, TOP_SIDE

Constructor Summary

Constructors

Constructor	Description
GridContainerRenderer(GridContainer modelElement)	Creates a Grid renderer from its corresponding layout object.

Method Summary

Modifier and Type	Method	Description
void	addChild(IRenderer renderer)	Adds a child to the current renderer
private LayoutArea	calculateContainerOccupiedArea(LayoutContext layoutContext, boolean isFull)
private static Grid	constructGrid(GridContainerRenderer renderer, Rectangle actualBBox)
private AbstractRenderer	createOverflowRenderer(List<IRenderer> children)
private static Boolean	determineCollapsingMargins(IRenderer renderer)	Calculates collapsing margins value.
private static LayoutContext	getCellLayoutContext(LayoutContext layoutContext, Rectangle actualBBox, GridCell cell)
IRenderer	getNextRenderer()	Gets a new instance of this class to be used as a next renderer, after this renderer is used, if IRenderer.layout(LayoutContext) is called more than once.
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.
private GridContainerRenderer.GridLayoutResult	layoutGrid(LayoutContext layoutContext, Rectangle actualBBox, Grid grid)
private static int	processLayoutResult(GridContainerRenderer.GridLayoutResult layoutResult, GridCell cell, LayoutResult cellResult)

Methods inherited from class BlockRenderer

applyMaxHeight, applyMinHeight, applyRotationLayout, applyVerticalAlignment, applyWidth, beginRotationIfApplied, correctFixedLayout, createOverflowRenderer, createRotationTransformInsideOccupiedArea, createSplitAndOverflowRenderers, createSplitRenderer, decreaseLayoutBoxAfterChildPlacement, draw, endRotationIfApplied, fixOccupiedAreaIfOverflowedX, fixOccupiedAreaIfOverflowedY, getMinMaxWidth, getMinMaxWidth, getOccupiedAreaBBox, getResolvedFont, handleForcedPlacement, processNotFullChildResult, recalculateLayoutBoxBeforeChildLayout, recalculateOccupiedAreaAfterChildLayout, startChildMarginsHandling, stopLayoutingChildrenIfChildResultNotFull

Methods inherited from class AbstractRenderer

addAllChildRenderers, addAllChildRenderers, addAllProperties, addChildRenderer, alignChildHorizontally, allowLastYLineRecursiveExtraction, applyAbsolutePosition, applyAbsolutePositionIfNeeded, applyAction, applyBorderBox, applyBorderBox, applyDestination, applyDestinationsAndAnnotation, applyLinkAnnotation, applyMargins, applyMargins, applyMarginsBordersPaddings, applyPaddings, applyPaddings, applyRelativePositioningTranslation, beginElementOpacityApplying, beginTransformationIfApplied, calculateAbsolutePdfBBox, calculateAdditionalWidth, calculateBBox, calculatePaddingBorderHeight, calculatePaddingBorderWidth, calculateShiftToPositionBBoxOfPointsAt, clipBackgroundArea, clipBackgroundArea, clipBorderArea, createFontCharacteristics, createXObject, deleteOwnProperty, deleteProperty, drawBackground, drawBorder, drawChildren, drawPositionedChildren, endElementOpacityApplying, endTransformationIfApplied, getAspectRatio, getBackgroundArea, getBorderAreaBBox, getBorderRadii, getBorders, getBorders, getChildRenderers, getDefaultProperty, getFirstYLineRecursively, getInnerAreaBBox, getLastYLineRecursively, getMargins, getModelElement, getOccupiedArea, getOwnProperties, getOwnProperty, getPaddings, getParent, getPdfDocument, getProperty, getProperty, getPropertyAsBoolean, getPropertyAsColor, getPropertyAsFloat, getPropertyAsFloat, getPropertyAsFloat, getPropertyAsFont, getPropertyAsInteger, getPropertyAsTransparentColor, getPropertyAsUnitValue, getPropertyAsUnitValue, getRootRenderer, hasAbsoluteUnitValue, hasAspectRatio, hasOwnOrModelProperty, hasOwnProperty, hasProperty, hasRelativeUnitValue, initElementAreas, isAbsolutePosition, isBorderBoxSizing, isFirstOnRootArea, isFirstOnRootArea, isFixedLayout, isFlushed, isKeepTogether, isKeepTogether, isNotFittingHeight, isNotFittingLayoutArea, isNotFittingWidth, isOverflowFit, isOverflowProperty, isOverflowProperty, isOverflowProperty, isPositioned, isRelativePosition, isStaticLayout, logWarningIfGetNextRendererNotOverridden, move, noAbsolutePositionInfo, preparePositionedRendererAndAreaForLayout, processWaitingDrawing, rectangleToPointsList, removeAllChildRenderers, removeChildRenderer, replaceOwnProperty, resolveFirstPdfFont, resolveFirstPdfFont, retrieveHeight, retrieveMaxHeight, retrieveMaxWidth, retrieveMinHeight, retrieveMinWidth, retrieveResolvedDeclaredHeight, retrieveUnitValue, retrieveUnitValue, retrieveWidth, returnBackOwnProperty, setBorders, setChildRenderer, setChildRenderers, setMinMaxWidthBasedOnFixedWidth, setParent, setProperty, setThisAsParent, shrinkOccupiedAreaForAbsolutePosition, toString, transformPoints, updateHeight, updateHeightsOnSplit, updateHeightsOnSplit, updateMaxHeight, updateMinHeight, updateWidth

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

isFirstLayout

private boolean isFirstLayout

containerHeight

private float containerHeight

containerWidth

private float containerWidth

Constructor Details

GridContainerRenderer

public GridContainerRenderer(GridContainer modelElement)

Creates a Grid renderer from its corresponding layout object.

Parameters:

modelElement - the GridContainer which this object should manage

Method Details

getNextRenderer

public IRenderer getNextRenderer()

Gets a new instance of this class to be used as a next renderer, after this renderer is used, if IRenderer.layout(LayoutContext) is called more than once.

Returns:

new renderer instance

layout

public 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. 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.

Specified by:

layout in interface IRenderer

Overrides:

layout in class BlockRenderer

Parameters:

layoutContext - the description of layout area and any other additional information

Returns:

result of the layout process

addChild

public void addChild(IRenderer renderer)

Adds a child to the current renderer

Specified by:

addChild in interface IRenderer

Overrides:

addChild in class AbstractRenderer

Parameters:

renderer - a child to be added

determineCollapsingMargins

private static Boolean determineCollapsingMargins(IRenderer renderer)

Calculates collapsing margins value. It's based on browser behavior. Always returning true somehow also almost works.

createOverflowRenderer

private AbstractRenderer createOverflowRenderer(List<IRenderer> children)

layoutGrid

private GridContainerRenderer.GridLayoutResult layoutGrid(LayoutContext layoutContext,
 Rectangle actualBBox,
 Grid grid)

processLayoutResult

private static int processLayoutResult(GridContainerRenderer.GridLayoutResult layoutResult,
 GridCell cell,
 LayoutResult cellResult)

getCellLayoutContext

private static LayoutContext getCellLayoutContext(LayoutContext layoutContext,
 Rectangle actualBBox,
 GridCell cell)

calculateContainerOccupiedArea

private LayoutArea calculateContainerOccupiedArea(LayoutContext layoutContext,
 boolean isFull)

constructGrid

private static Grid constructGrid(GridContainerRenderer renderer,
 Rectangle actualBBox)