Bitmap (PDFBox JBIG2 ImageIO plugin 3.0.4 API)

java.lang.Object
- org.apache.pdfbox.jbig2.Bitmap

```
public class Bitmap
extends Object
```
This class represents a bi-level image that is organized like a bitmap.

Constructor Summary

Constructors
Constructor and Description

Bitmap(int width, int height)
Creates an instance of a blank image.

Constructors
Constructor and Description
`Bitmap(int width, int height)` Creates an instance of a blank image.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`static void`	`arraycopy(Bitmap src, int srcPos, Bitmap dest, int destPos, int length)` Copy parts of the underlying array of a Bitmap to another Bitmap.
`boolean`	`equals(Object obj)`
`void`	`fillBitmap(byte fillByte)` Fill the underlying bitmap with the given byte value.
`int`	`getBitOffset(int x)` Computes the offset of the given x coordinate in its byte.
`Rectangle`	`getBounds()`
`byte`	`getByte(int index)` Simply returns a byte from the bitmap byte array.
`byte[]`	`getByteArray()` Deprecated. don't expose the underlying byte array, will be removed in a future release.
`int`	`getByteAsInteger(int index)` Converts the byte at specified index into an integer and returns the value.
`int`	`getByteIndex(int x, int y)` Returns the index of the byte that contains the pixel, specified by the pixel's x and y coordinates.
`int`	`getHeight()` Simply returns the height of this bitmap.
`int`	`getLength()` Returns the length of the underlying byte array.
`int`	`getMemorySize()` Deprecated. renamed, will be removed in a future release. Use `getLength()` instead.
`byte`	`getPixel(int x, int y)` Returns the value of a pixel specified by the given coordinates.
`int`	`getRowStride()` Simply returns the row stride of this bitmap.
`int`	`getWidth()` Simply returns the width of this bitmap.
`void`	`setByte(int index, byte value)` Simply sets the given value at the given array index position.
`void`	`setPixel(int x, int y, byte pixelValue)`

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

- Constructor Detail
  - Bitmap
```
public Bitmap(int width,
              int height)
```
    Creates an instance of a blank image.
    The image data is stored in a byte array. Each pixels is stored as one bit, so that each byte contains 8 pixel. A pixel has by default the value 0 for white and 1 for black.
    Row stride means the amount of bytes per line. It is computed automatically and fills the pad bits with 0.
    
    Parameters:
    
    height - - The real height of the bitmap in pixels.
    
    width - - The real width of the bitmap in pixels.
- Method Detail
  - getPixel
```
public byte getPixel(int x,
                     int y)
```
    Returns the value of a pixel specified by the given coordinates.
    By default, the value is 0 for a white pixel and 1 for a black pixel. The value is placed in the rightmost bit in the byte.
    
    Parameters:
    
    x - - The x coordinate of the pixel.
    
    y - - The y coordinate of the pixel.
    
    Returns:
    
    The value of a pixel.
  - setPixel
```
public void setPixel(int x,
                     int y,
                     byte pixelValue)
```
  - getByteIndex
```
public int getByteIndex(int x,
                        int y)
```
    Returns the index of the byte that contains the pixel, specified by the pixel's x and y coordinates.
    
    Parameters:
    
    x - - The pixel's x coordinate.
    
    y - - The pixel's y coordinate.
    
    Returns:
    
    The index of the byte that contains the specified pixel.
  - getByteArray
```
public byte[] getByteArray()
```
    Deprecated. don't expose the underlying byte array, will be removed in a future release.
    
    Simply returns the byte array of this bitmap.
    
    Returns:
    
    The byte array of this bitmap.
  - getByte
```
public byte getByte(int index)
```
    Simply returns a byte from the bitmap byte array. Throws an IndexOutOfBoundsException if the given index is out of bound.
    
    Parameters:
    
    index - - The array index that specifies the position of the wanted byte.
    
    Returns:
    
    The byte at the index-position.
    
    Throws:
    
    IndexOutOfBoundsException - if the index is out of bound.
  - setByte
```
public void setByte(int index,
                    byte value)
```
    Simply sets the given value at the given array index position. Throws an IndexOutOfBoundsException if the given index is out of bound.
    
    Parameters:
    
    index - - The array index that specifies the position of a byte.
    
    value - - The byte that should be set.
    
    Throws:
    
    IndexOutOfBoundsException - if the index is out of bound.
  - getByteAsInteger
```
public int getByteAsInteger(int index)
```
    Converts the byte at specified index into an integer and returns the value. Throws an IndexOutOfBoundsException if the given index is out of bound.
    
    Parameters:
    
    index - - The array index that specifies the position of the wanted byte.
    
    Returns:
    
    The converted byte at the index-position as an integer.
    
    Throws:
    
    IndexOutOfBoundsException - if the index is out of bound.
  - getBitOffset
```
public int getBitOffset(int x)
```
    Computes the offset of the given x coordinate in its byte. The method uses optimized modulo operation for a better performance.
    
    Parameters:
    
    x - - The x coordinate of a pixel.
    
    Returns:
    
    The bit offset of a pixel in its byte.
  - getHeight
```
public int getHeight()
```
    Simply returns the height of this bitmap.
    
    Returns:
    
    The height of this bitmap.
  - getWidth
```
public int getWidth()
```
    Simply returns the width of this bitmap.
    
    Returns:
    
    The width of this bitmap.
  - getRowStride
```
public int getRowStride()
```
    Simply returns the row stride of this bitmap.
    (Row stride means the amount of bytes per line.)
    
    Returns:
    
    The row stride of this bitmap.
  - getBounds
```
public Rectangle getBounds()
```
  - getMemorySize
```
public int getMemorySize()
```
    Deprecated. renamed, will be removed in a future release. Use getLength() instead.
    
    Returns the length of the underlying byte array.
    
    Returns:
    
    byte array length
  - getLength
```
public int getLength()
```
    Returns the length of the underlying byte array.
    
    Returns:
    
    byte array length
  - fillBitmap
```
public void fillBitmap(byte fillByte)
```
    Fill the underlying bitmap with the given byte value.
    
    Parameters:
    
    fillByte - the value to be stored in all elements of the bitmap
  - equals
```
public boolean equals(Object obj)
```
    Overrides:
    
    equals in class Object
  - arraycopy
```
public static void arraycopy(Bitmap src,
                             int srcPos,
                             Bitmap dest,
                             int destPos,
                             int length)
```
    Copy parts of the underlying array of a Bitmap to another Bitmap.
    
    Parameters:
    
    src - the source Bitmap
    
    srcPos - start position within the source Bitmap
    
    dest - the destination Bitmap
    
    destPos - start position within the destination Bitmap
    
    length - the number of bytes to be copied

Class Bitmap

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Bitmap

Method Detail

getPixel

setPixel

getByteIndex

getByteArray

getByte

setByte

getByteAsInteger

getBitOffset

getHeight

getWidth

getRowStride

getBounds

getMemorySize

getLength

fillBitmap

equals

arraycopy