SvgDrawContext (iText 7 7.2.4 API)

java.lang.Object
- com.itextpdf.svg.renderers.SvgDrawContext

```
public class SvgDrawContext
extends Object
```
The SvgDrawContext keeps a stack of PdfCanvas instances, which represent all levels of XObjects that are added to the root canvas.

Constructor Summary

Constructors
Constructor and Description
`SvgDrawContext(ResourceResolver resourceResolver, FontProvider fontProvider)` Create an instance of the context that is used to store information when converting SVG.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`addNamedObject(String name, ISvgNodeRenderer namedObject)` Adds a named object to the draw context.
`void`	`addNamedObjects(Map<String,ISvgNodeRenderer> namedObjects)` * Adds a number of named object to the draw context.
`void`	`addTextMove(float additionalMoveX, float additionalMoveY)` Increment the stored text move
`void`	`addUsedId(String elementId)` Adds an ID that has been referenced by a use element.
`void`	`addViewPort(Rectangle viewPort)` Adds a viewbox to the context.
`SvgCssContext`	`getCssContext()` Gets the SVG CSS context.
`PdfCanvas`	`getCurrentCanvas()` Retrieves the current top of the stack, without modifying the stack.
`AffineTransform`	`getCurrentCanvasTransform()` Get the current canvas transformation
`Rectangle`	`getCurrentViewPort()` Get the current viewbox.
`FontProvider`	`getFontProvider()` Gets the FontProvider to be used during the drawing operations.
`AffineTransform`	`getLastTextTransform()` Get the text transformation that was last applied
`ISvgNodeRenderer`	`getNamedObject(String name)` Get a named object based on its name.
`float[]`	`getPreviousElementTextMove()`
`ResourceResolver`	`getResourceResolver()` Gets the ResourceResolver to be used during the drawing operations.
`Rectangle`	`getRootViewPort()` Get the viewbox which is the root viewport for the current document.
`FontSet`	`getTempFonts()` Gets list of temporary fonts from @font-face.
`float[]`	`getTextMove()` Get the stored current text move
`boolean`	`isIdUsedByUseTagBefore(String elementId)` Returns true when this id has been used before
`PdfCanvas`	`popCanvas()` Retrieves the current top of the stack, thereby taking the current item off the stack.
`void`	`popPatternId()` Pops the last template id from the stack.
`void`	`pushCanvas(PdfCanvas canvas)` Adds a `PdfCanvas` to the stack (by definition its top), for use in drawing operations.
`boolean`	`pushPatternId(String patternId)` Add pattern id to stack.
`void`	`removeCurrentViewPort()` Remove the currently set view box.
`void`	`removeUsedId(String elementId)` Removes an ID that has been referenced by a use element.
`void`	`resetTextMove()` Reset the stored text move to [0f,0f]
`void`	`setCssContext(SvgCssContext cssContext)` Sets the SVG CSS context.
`void`	`setLastTextTransform(AffineTransform newTransform)` Set the last text transformation
`void`	`setPreviousElementTextMove(float[] previousElementTextMove)`
`void`	`setTempFonts(FontSet tempFonts)` Sets the FontSet.
`int`	`size()` Get the current size of the stack, signifying the nesting level of the XObjects.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - SvgDrawContext
```
public SvgDrawContext(ResourceResolver resourceResolver,
                      FontProvider fontProvider)
```
    Create an instance of the context that is used to store information when converting SVG.
    
    Parameters:
    
    resourceResolver - instance of ResourceResolver
    
    fontProvider - instance of FontProvider
- Method Detail
  - getCurrentCanvas
```
public PdfCanvas getCurrentCanvas()
```
    Retrieves the current top of the stack, without modifying the stack.
    
    Returns:
    
    the current canvas that can be used for drawing operations.
  - popCanvas
```
public PdfCanvas popCanvas()
```
    Retrieves the current top of the stack, thereby taking the current item off the stack.
    
    Returns:
    
    the current canvas that can be used for drawing operations.
  - pushCanvas
```
public void pushCanvas(PdfCanvas canvas)
```
    Adds a PdfCanvas to the stack (by definition its top), for use in drawing operations.
    
    Parameters:
    
    canvas - the new top of the stack
  - size
```
public int size()
```
    Get the current size of the stack, signifying the nesting level of the XObjects.
    
    Returns:
    
    the current size of the stack.
  - addViewPort
```
public void addViewPort(Rectangle viewPort)
```
    Adds a viewbox to the context.
    
    Parameters:
    
    viewPort - rectangle representing the current viewbox
  - getCurrentViewPort
```
public Rectangle getCurrentViewPort()
```
    Get the current viewbox.
    
    Returns:
    
    the viewbox as it is currently set
  - getRootViewPort
```
public Rectangle getRootViewPort()
```
    Get the viewbox which is the root viewport for the current document.
    
    Returns:
    
    root viewbox.
  - removeCurrentViewPort
```
public void removeCurrentViewPort()
```
    Remove the currently set view box.
  - addNamedObject
```
public void addNamedObject(String name,
                           ISvgNodeRenderer namedObject)
```
    Adds a named object to the draw context. These objects can then be referenced from a different tag.
    
    Parameters:
    
    name - name of the object
    
    namedObject - object to be referenced
  - getNamedObject
```
public ISvgNodeRenderer getNamedObject(String name)
```
    Get a named object based on its name. If the name isn't listed, this method will return null.
    
    Parameters:
    
    name - name of the object you want to reference
    
    Returns:
    
    the referenced object
  - getResourceResolver
```
public ResourceResolver getResourceResolver()
```
    Gets the ResourceResolver to be used during the drawing operations.
    
    Returns:
    
    resource resolver instance
  - addNamedObjects
```
public void addNamedObjects(Map<String,ISvgNodeRenderer> namedObjects)
```
    * Adds a number of named object to the draw context. These objects can then be referenced from a different tag.
    
    Parameters:
    
    namedObjects - Map containing the named objects keyed to their ID strings
  - getFontProvider
```
public FontProvider getFontProvider()
```
    Gets the FontProvider to be used during the drawing operations.
    
    Returns:
    
    font provider instance
  - getTempFonts
```
public FontSet getTempFonts()
```
    Gets list of temporary fonts from @font-face.
    
    Returns:
    
    font set instance
  - setTempFonts
```
public void setTempFonts(FontSet tempFonts)
```
    Sets the FontSet.
    
    Parameters:
    
    tempFonts - font set to be used during drawing operations
  - isIdUsedByUseTagBefore
```
public boolean isIdUsedByUseTagBefore(String elementId)
```
    Returns true when this id has been used before
    
    Parameters:
    
    elementId - element id to check
    
    Returns:
    
    true if id has been encountered before through a use element
  - addUsedId
```
public void addUsedId(String elementId)
```
    Adds an ID that has been referenced by a use element.
    
    Parameters:
    
    elementId - referenced element ID
  - removeUsedId
```
public void removeUsedId(String elementId)
```
    Removes an ID that has been referenced by a use element.
    
    Parameters:
    
    elementId - referenced element ID
  - getLastTextTransform
```
public AffineTransform getLastTextTransform()
```
    Get the text transformation that was last applied
    
    Returns:
    
    AffineTransform representing the last text transformation
  - setLastTextTransform
```
public void setLastTextTransform(AffineTransform newTransform)
```
    Set the last text transformation
    
    Parameters:
    
    newTransform - last text transformation
  - getTextMove
```
public float[] getTextMove()
```
    Get the stored current text move
    
    Returns:
    
    [horizontal text move, vertical text move]
  - resetTextMove
```
public void resetTextMove()
```
    Reset the stored text move to [0f,0f]
  - addTextMove
```
public void addTextMove(float additionalMoveX,
                        float additionalMoveY)
```
    Increment the stored text move
    
    Parameters:
    
    additionalMoveX - horizontal value to add
    
    additionalMoveY - vertical value to add
  - getCurrentCanvasTransform
```
public AffineTransform getCurrentCanvasTransform()
```
    Get the current canvas transformation
    
    Returns:
    
    the AffineTransform representing the current canvas transformation
  - getCssContext
```
public SvgCssContext getCssContext()
```
    Gets the SVG CSS context.
    
    Returns:
    
    the SVG CSS context
  - setCssContext
```
public void setCssContext(SvgCssContext cssContext)
```
    Sets the SVG CSS context.
    
    Parameters:
    
    cssContext - the SVG CSS context
  - pushPatternId
```
public boolean pushPatternId(String patternId)
```
    Add pattern id to stack. Check if the id is already in the stack. If it is, then return false and not add, if it is not - add and return true.
    
    Parameters:
    
    patternId - pattern id
    
    Returns:
    
    true if pattern id was not on the stack and was pushed; false if it is on the stack
  - popPatternId
```
public void popPatternId()
```
    Pops the last template id from the stack.
  - setPreviousElementTextMove
```
public void setPreviousElementTextMove(float[] previousElementTextMove)
```
  - getPreviousElementTextMove
```
public float[] getPreviousElementTextMove()
```

Class SvgDrawContext

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

SvgDrawContext

Method Detail

getCurrentCanvas

popCanvas

pushCanvas

size

addViewPort

getCurrentViewPort

getRootViewPort

removeCurrentViewPort

addNamedObject

getNamedObject

getResourceResolver

addNamedObjects

getFontProvider

getTempFonts

setTempFonts

isIdUsedByUseTagBefore

addUsedId

removeUsedId

getLastTextTransform

setLastTextTransform

getTextMove

resetTextMove

addTextMove

getCurrentCanvasTransform

getCssContext

setCssContext

pushPatternId

popPatternId

setPreviousElementTextMove

getPreviousElementTextMove