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## org.apache.fop.pdf
Class PDFPaintingState

    java.lang.Object
      org.apache.fop.util.AbstractPaintingState
          org.apache.fop.pdf.PDFPaintingState

All Implemented Interfaces:
  java.lang.Cloneable, java.io.Serializable

public class PDFPaintingState
extends AbstractPaintingState

This keeps information about the current painting state when writing to pdf. It allows for creating new graphics states with the q operator. This class is only used to store the information about the state the caller needs to handle the actual pdf operators. When setting the state for pdf there are three possible ways of handling the situation. The values can be set to override previous or default values. A new state can be added and then the values set. The current state can be popped and values will return to a previous state then the necessary values can be overridden. The current transform behaves differently to other values as the matrix is combined with the current resolved value. It is impossible to optimise the result without analysing the all the possible combinations after completing.

See Also:
  Serialized Form

Nested Class Summary

Nested classes inherited from class org.apache.fop.util.AbstractPaintingState
`AbstractPaintingState.AbstractData, AbstractPaintingState.StateStack`

Constructor Summary
`PDFPaintingState()` PDF State for storing graphics state.

Method Summary
`boolean` | `checkClip(java.awt.Shape cl)` Check if the clip will change the current state.
`float` | `getCharacterSpacing()` Returns the current character spacing (Tc) value.
`PDFGState` | `getGState()` Get the graphics state.
`int` | `getStackLevel()` Get the current stack level.
`protected AbstractPaintingState` | `instantiate()` Instantiates a new state object
`protected AbstractPaintingState.AbstractData` | `instantiateData()` Instantiates a new state data object
`void` | `save()` Push the current state onto the stack.
`boolean` | `setCharacterSpacing(float value)` Sets the character spacing (Tc).
`void` | `setClip(java.awt.Shape cl)` Set the current clip.
`boolean` | `setPaint(java.awt.Paint p)` Set the current paint.

Methods inherited from class org.apache.fop.util.AbstractPaintingState
`checkTransform, clear, clearTransform, clone, concatenate, getBackColor, getBaseTransform, getColor, getData, getFontName, getFontSize, getLineWidth, getStateStack, getTransform, resetTransform, restore, restoreAll, saveAll, setBackColor, setColor, setDashArray, setData, setFontName, setFontSize, setLineWidth, toString`

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

Constructor Detail

### PDFPaintingState

    public PDFPaintingState()

  PDF State for storing graphics state.

Method Detail

### setPaint

    public boolean setPaint(java.awt.Paint p)

  Set the current paint. This checks if the paint will change and then sets the current paint.

  Parameters:
    `p` - the new paint
  Returns:
    true if the new paint changes the current paint

### checkClip

    public boolean checkClip(java.awt.Shape cl)

  Check if the clip will change the current state. A clip is assumed to be used in a situation where it will add to any clip in the current or parent states. A clip cannot be cleared, this can only be achieved by going to a parent level with the correct clip. If the clip is different then it may start a new state so that it can return to the previous clip.

  Parameters:
    `cl` - the clip shape to check
  Returns:
    true if the clip will change the current clip.

### setClip

    public void setClip(java.awt.Shape cl)

  Set the current clip. This either sets a new clip or sets the clip to the intersect of the old clip and the new clip.

  Parameters:
    `cl` - the new clip in the current state

### setCharacterSpacing

    public boolean setCharacterSpacing(float value)

  Sets the character spacing (Tc).

  Parameters:
    `value` - the new value
  Returns:
    true if the value was changed with respect to the previous value

### getCharacterSpacing

    public float getCharacterSpacing()

  Returns the current character spacing (Tc) value.

  Returns:
    the Tc value

### getStackLevel

    public int getStackLevel()

  Get the current stack level.

  Returns:
    the current stack level

### getGState

    public PDFGState getGState()

  Get the graphics state. This gets the combination of all graphic states for the current context. This is the graphic state set with the gs operator not the other graphic state changes.

  Returns:
    the calculated ExtGState in the current context

### instantiateData

    protected AbstractPaintingState.AbstractData instantiateData()

  Instantiates a new state data object

  Specified by:
    `instantiateData` in class `AbstractPaintingState`
  Returns:
    a new state data object

### instantiate

    protected AbstractPaintingState instantiate()

  Instantiates a new state object

  Specified by:
    `instantiate` in class `AbstractPaintingState`
  Returns:
    a new state object

### save

    public void save()

  Push the current state onto the stack. This call should be used when the q operator is used so that the state is known when popped.

  Overrides:
    `save` in class `AbstractPaintingState`

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