iText 7 7.1.9 API
iText.Layout.Renderer.RootRenderer Class Referenceabstract
Inheritance diagram for iText.Layout.Renderer.RootRenderer:
iText.Layout.Renderer.AbstractRenderer iText.Layout.Renderer.IRenderer iText.Layout.IPropertyContainer iText.Layout.Renderer.CanvasRenderer iText.Layout.Renderer.DocumentRenderer iText.Layout.ColumnDocumentRenderer

Public Member Functions

override void  AddChild (IRenderer renderer)
  Adds a child to the current renderer More...
 
virtual void  Flush ()
  Draws (flushes) the content. More...
 
virtual void  Close ()
  This method correctly closes the RootRenderer instance. More...
 
override LayoutResult  Layout (LayoutContext layoutContext)
  This method simulates positioning of the renderer, including all of its children, and returns the iText.Layout.Layout.LayoutResult , representing the layout result, including occupied area, status, i.e. if there was enough place to fit the renderer subtree, etc. More...
 
virtual LayoutArea  GetCurrentArea ()
 
- Public Member Functions inherited from iText.Layout.Renderer.AbstractRenderer
virtual IPropertyContainer  GetModelElement ()
  Gets the model element associated with this renderer. More...
 
virtual IList< IRenderer GetChildRenderers ()
  Gets the child IRenderer s. More...
 
virtual bool  HasProperty (int property)
  Checks if this entity has the specified property. More...
 
virtual bool  HasOwnProperty (int property)
  Checks if this entity has the specified property, i.e. if it was set to this very element earlier More...
 
virtual bool  HasOwnOrModelProperty (int property)
  Checks if this renderer or its model element have the specified property, i.e. if it was set to this very element or its very model element earlier. More...
 
virtual void  DeleteOwnProperty (int property)
  Deletes the own property of this entity. More...
 
virtual void  DeleteProperty (int property)
  Deletes property from this very renderer, or in case the property is specified on its model element, the property of the model element is deleted More...
 
virtual T1  GetProperty< T1 > (int key)
  Gets the property from this entity. More...
 
virtual T1  GetOwnProperty< T1 > (int property)
  Gets own property from this entity. More...
 
virtual T1  GetProperty< T1 > (int property, T1 defaultValue)
  Gets a property from this entity or one of its hierarchical parents. More...
 
virtual void  SetProperty (int property, Object value)
  Sets a property for this entity. More...
 
virtual T1  GetDefaultProperty< T1 > (int property)
  Gets the default property from this entity. More...
 
virtual PdfFont  GetPropertyAsFont (int property)
  Returns a property with a certain key, as a font object. More...
 
virtual Color  GetPropertyAsColor (int property)
  Returns a property with a certain key, as a color. More...
 
virtual TransparentColor  GetPropertyAsTransparentColor (int property)
  Returns a property with a certain key, as a iText.Layout.Properties.TransparentColor. More...
 
virtual ? float  GetPropertyAsFloat (int property)
  Returns a property with a certain key, as a floating point value. More...
 
virtual ? float  GetPropertyAsFloat (int property, float? defaultValue)
  Returns a property with a certain key, as a floating point value. More...
 
virtual ? bool  GetPropertyAsBoolean (int property)
  Returns a property with a certain key, as a boolean value. More...
 
virtual UnitValue  GetPropertyAsUnitValue (int property)
  Returns a property with a certain key, as a unit value. More...
 
virtual ? int  GetPropertyAsInteger (int property)
  Returns a property with a certain key, as an integer value. More...
 
override String  ToString ()
  Returns a string representation of the renderer. More...
 
virtual LayoutArea  GetOccupiedArea ()
  Gets the resultant occupied area after the last call to the Layout(iText.Layout.Layout.LayoutContext) method. More...
 
virtual void  Draw (DrawContext drawContext)
  Flushes the renderer subtree contents, i.e. draws itself on canvas, adds necessary objects to the iText.Kernel.Pdf.PdfDocument etc. More...
 
virtual void  DrawBackground (DrawContext drawContext)
  Draws a background layer if it is defined by a key iText.Layout.Properties.Property.BACKGROUND in either the layout element or this IRenderer itself. More...
 
virtual void  DrawChildren (DrawContext drawContext)
  Performs the drawing operation for all children of this renderer. More...
 
virtual void  DrawBorder (DrawContext drawContext)
  Performs the drawing operation for the border of this renderer, if defined by any of the iText.Layout.Properties.Property.BORDER values in either the layout element or this IRenderer itself. More...
 
virtual bool  IsFlushed ()
  Indicates whether this renderer is flushed or not, i.e. if Draw(DrawContext) has already been called. More...
 
virtual IRenderer  SetParent (IRenderer parent)
  Explicitly sets this object as the child of another IRenderer in the renderer hierarchy. More...
 
virtual IRenderer  GetParent ()
  Gets the parent IRenderer. More...
 
virtual void  Move (float dxRight, float dyUp)
  Moves the renderer subtree by the specified offset. More...
 
virtual IList< Rectangle InitElementAreas (LayoutArea area)
  Gets all rectangles that this IRenderer can draw upon in the given area. More...
 
virtual Rectangle  GetOccupiedAreaBBox ()
  Gets the bounding box that contains all content written to the DrawContext by this IRenderer. More...
 
virtual Rectangle  GetBorderAreaBBox ()
  Gets the border box of a renderer. More...
 
virtual Rectangle  GetInnerAreaBBox ()
 
virtual Rectangle  ApplyMargins (Rectangle rect, bool reverse)
  Applies margins of the renderer on the given rectangle More...
 
virtual Rectangle  ApplyBorderBox (Rectangle rect, bool reverse)
  Applies the border box of the renderer on the given rectangle If the border of a certain side is null, the side will remain as it was. More...
 
virtual Rectangle  ApplyPaddings (Rectangle rect, bool reverse)
  Applies paddings of the renderer on the given rectangle More...
 
virtual bool  IsFirstOnRootArea ()
 
virtual MinMaxWidth  GetMinMaxWidth ()
 
abstract IRenderer  GetNextRenderer ()
  Gets a new instance of this class to be used as a next renderer, after this renderer is used, if Layout(iText.Layout.Layout.LayoutContext) is called more than once. More...
 

Member Function Documentation

◆ AddChild()

override void iText.Layout.Renderer.RootRenderer.AddChild ( IRenderer  renderer )
inlinevirtual

Adds a child to the current renderer

Reimplemented from iText.Layout.Renderer.AbstractRenderer.

◆ Close()

virtual void iText.Layout.Renderer.RootRenderer.Close ( )
inlinevirtual

This method correctly closes the RootRenderer instance.

This method correctly closes the RootRenderer instance. There might be hanging elements, like in case of iText.Layout.Properties.Property.KEEP_WITH_NEXT is set to true and when no consequent element has been added. This method addresses such situations.

◆ Flush()

virtual void iText.Layout.Renderer.RootRenderer.Flush ( )
inlinevirtual

Draws (flushes) the content.

See also
AbstractRenderer.Draw(DrawContext)

◆ Layout()

override LayoutResult iText.Layout.Renderer.RootRenderer.Layout ( LayoutContext  layoutContext )
inlinevirtual

This method simulates positioning of the renderer, including all of its children, and returns the iText.Layout.Layout.LayoutResult , representing the layout result, including occupied area, status, i.e. if there was enough place to fit the renderer subtree, etc.

Implements iText.Layout.Renderer.AbstractRenderer.