HwmfBitmapDib.Compression (POI API Documentation)

java.lang.Object
- java.lang.Enum<HwmfBitmapDib.Compression>
- - org.apache.poi.hwmf.record.HwmfBitmapDib.Compression

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable< HwmfBitmapDib.Compression>

Enclosing class:

HwmfBitmapDib
```
public static enum HwmfBitmapDib.Compression
extends java.lang.Enum<HwmfBitmapDib.Compression>
```

Enum Constant Summary

Enum Constants
Enum Constant and Description
`BI_BITFIELDS` The bitmap is not compressed and the color table consists of three DWORD color masks that specify the red, green, and blue components, respectively, of each pixel.
`BI_CMYK` The image is an uncompressed CMYK format.
`BI_CMYKRLE4` A CMYK format that uses RLE compression for bitmaps with 4 bits per pixel.
`BI_CMYKRLE8` A CMYK format that uses RLE compression for bitmaps with 8 bits per pixel.
`BI_JPEG` The image is a JPEG image, as specified in [JFIF].
`BI_PNG` The image is a PNG image, as specified in [RFC2083].
`BI_RGB` The bitmap is in uncompressed red green blue (RGB) format that is not compressed and does not use color masks.
`BI_RLE4` An RGB format that uses RLE compression for bitmaps with 4 bits per pixel.
`BI_RLE8` An RGB format that uses run-length encoding (RLE) compression for bitmaps with 8 bits per pixel.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static HwmfBitmapDib.Compression`	`valueOf(java.lang.String name)` Returns the enum constant of this type with the specified name. (返回具有指定名称的此类型的枚举常量。)
`static HwmfBitmapDib.Compression[]`	`values()` Returns an array containing the constants of this enum type, in the order they are declared. (按照声明的顺序返回包含此枚举类型常量的数组。)

Methods inherited from class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- Enum Constant Detail
  - BI_RGB
```
public static final HwmfBitmapDib.Compression BI_RGB
```
    The bitmap is in uncompressed red green blue (RGB) format that is not compressed and does not use color masks. (位图采用未压缩的红绿蓝 (RGB) 格式，未压缩且不使用颜色蒙版。)
  - BI_RLE8
```
public static final HwmfBitmapDib.Compression BI_RLE8
```
    An RGB format that uses run-length encoding (RLE) compression for bitmaps with 8 bits per pixel. The compression uses a 2-byte format consisting of a count byte followed by a byte containing a color index. (一种 RGB 格式，它对每像素 8 位的位图使用游程长度编码 (RLE) 压缩。压缩使用 2 字节格式，由一个计数字节后跟一个包含颜色索引的字节组成。)
  - BI_RLE4
```
public static final HwmfBitmapDib.Compression BI_RLE4
```
    An RGB format that uses RLE compression for bitmaps with 4 bits per pixel. The compression uses a 2-byte format consisting of a count byte followed by two word-length color indexes. (一种 RGB 格式，对每像素 4 位的位图使用 RLE 压缩。压缩使用 2 字节格式，由一个计数字节后跟两个字长颜色索引组成。)
  - BI_BITFIELDS
```
public static final HwmfBitmapDib.Compression BI_BITFIELDS
```
    The bitmap is not compressed and the color table consists of three DWORD color masks that specify the red, green, and blue components, respectively, of each pixel. This is valid when used with 16 and 32-bits per pixel bitmaps. (位图未压缩，颜色表由三个 DWORD 颜色掩码组成，分别指定每个像素的红色、绿色和蓝色分量。这在与每像素 16 位和 32 位位图一起使用时有效。)
  - BI_JPEG
```
public static final HwmfBitmapDib.Compression BI_JPEG
```
    The image is a JPEG image, as specified in [JFIF]. This value SHOULD only be used in certain bitmap operations, such as JPEG pass-through. The application MUST query for the pass-through support, since not all devices support JPEG pass-through. Using non-RGB bitmaps MAY limit the portability of the metafile to other devices. For instance, display device contexts generally do not support this pass-through. (该图像是 [JFIF] 中指定的 JPEG 图像。此值应仅用于某些位图操作，例如 JPEG 直通。应用程序必须查询传递支持，因为并非所有设备都支持 JPEG 传递。使用非 RGB 位图可能会限制元文件对其他设备的可移植性。例如，显示设备上下文通常不支持这种传递。)
  - BI_PNG
```
public static final HwmfBitmapDib.Compression BI_PNG
```
    The image is a PNG image, as specified in [RFC2083]. This value SHOULD only be used certain bitmap operations, such as JPEG/PNG pass-through. The application MUST query for the pass-through support, because not all devices support JPEG/PNG pass-through. Using non-RGB bitmaps MAY limit the portability of the metafile to other devices. For instance, display device contexts generally do not support this pass-through. (该图像是 [RFC2083] 中指定的 PNG 图像。此值应仅用于某些位图操作，例如 JPEG/PNG 传递。应用程序必须查询传递支持，因为并非所有设备都支持 JPEG/PNG 传递。使用非 RGB 位图可能会限制元文件对其他设备的可移植性。例如，显示设备上下文通常不支持这种传递。)
  - BI_CMYK
```
public static final HwmfBitmapDib.Compression BI_CMYK
```
    The image is an uncompressed CMYK format. (图像是未压缩的 CMYK 格式。)
  - BI_CMYKRLE8
```
public static final HwmfBitmapDib.Compression BI_CMYKRLE8
```
    A CMYK format that uses RLE compression for bitmaps with 8 bits per pixel. The compression uses a 2-byte format consisting of a count byte followed by a byte containing a color index. (一种 CMYK 格式，对每像素 8 位的位图使用 RLE 压缩。压缩使用 2 字节格式，由一个计数字节后跟一个包含颜色索引的字节组成。)
  - BI_CMYKRLE4
```
public static final HwmfBitmapDib.Compression BI_CMYKRLE4
```
    A CMYK format that uses RLE compression for bitmaps with 4 bits per pixel. The compression uses a 2-byte format consisting of a count byte followed by two word-length color indexes. (一种 CMYK 格式，对每像素 4 位的位图使用 RLE 压缩。压缩使用 2 字节格式，由一个计数字节后跟两个字长颜色索引组成。)
- Method Detail
  - values
```
public static HwmfBitmapDib.Compression[] values()
```
    Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
```
for (HwmfBitmapDib.Compression c : HwmfBitmapDib.Compression.values())
    System.out.println(c);
```
    (按照声明的顺序返回包含此枚举类型常量的数组。此方法可用于迭代常量，如下所示： for (HwmfBitmapDib.Compression c : HwmfBitmapDib.Compression.values()) System.out.println(c);)
    Returns:
    
    an array containing the constants of this enum type, in the order they are declared (包含此枚举类型的常量的数组，按声明的顺序排列)
  - valueOf
```
public static HwmfBitmapDib.Compression valueOf(java.lang.String name)
```
    Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.) (返回具有指定名称的此类型的枚举常量。该字符串必须与用于在此类型中声明枚举常量的标识符完全匹配。（不允许使用无关的空白字符。）)
    
    Parameters:
    
    name - the name of the enum constant to be returned. (name - 要返回的枚举常量的名称。)
    
    Returns:
    
    the enum constant with the specified name (具有指定名称的枚举常量)
    
    Throws:
    
    java.lang.IllegalArgumentException - if this enum type has no constant with the specified name (java.lang.IllegalArgumentException - 如果此枚举类型没有具有指定名称的常量)
    
    java.lang.NullPointerException - if the argument is null (java.lang.NullPointerException - 如果参数为空)

Enum HwmfBitmapDib.Compression

Enum Constant Summary

Method Summary

Methods inherited from class java.lang.Enum

Methods inherited from class java.lang.Object

Enum Constant Detail

BI_RGB

BI_RLE8

BI_RLE4

BI_BITFIELDS

BI_JPEG

BI_PNG

BI_CMYK

BI_CMYKRLE8

BI_CMYKRLE4

Method Detail

values

valueOf