Package com.vdoc.sdk.commons.utils

Class ImageUtil

java.lang.Object

com.vdoc.sdk.commons.utils.ImageUtil

public class ImageUtil
extends Object

Image utility class

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	ImageUtil.CropRatioStrategy	Crop ratio strategy

Field Summary

Fields

Modifier and Type	Field	Description
static final double	ONE_RATIO

Method Summary

Modifier and Type	Method	Description
static boolean	canRead(String format)	test if e type can be read
static boolean	canWrite(String format)	test if e type can be write
static BufferedImage	cropRatio(BufferedImage image, double ratio, ImageUtil.CropRatioStrategy cropRatioStrategy)	Crop an image to the target ratio
static BufferedImage	resizeImageToBestSize(BufferedImage image, float tagetMaxWidth, float tagetMaxHeight, boolean minimizeOnly)	resize an image to the greater size without distortion
static BufferedImage	resizeImageToBestSize(BufferedImage image, float tagetMaxWidth, float tagetMaxHeight, boolean minimizeOnly, int colorType)	resize an image to the greater size without distortion
static BufferedImage	reziseImage(BufferedImage image, float ratio, int colorType)	resize image with specified ratio ( ratio invalid input: '<' 0 minimize ratio > 1 maximize )

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

ONE_RATIO

public static final double ONE_RATIO

See Also:

• Constant Field Values

Method Details

cropRatio

public static BufferedImage cropRatio(BufferedImage image,
 double ratio,
 ImageUtil.CropRatioStrategy cropRatioStrategy)

Crop an image to the target ratio

Parameters:

image - the source image

ratio - the target ratio

cropRatioStrategy - the zone to preserve

Returns:

the croped image

resizeImageToBestSize

public static BufferedImage resizeImageToBestSize(BufferedImage image,
 float tagetMaxWidth,
 float tagetMaxHeight,
 boolean minimizeOnly,
 int colorType)

resize an image to the greater size without distortion

Parameters:

image - initial image

tagetMaxWidth - output max width

tagetMaxHeight - output max height

minimizeOnly - source image's size greater than output image

colorType - an BufferedImage TYPE_ constant

Returns:

optimized resized image

resizeImageToBestSize

public static BufferedImage resizeImageToBestSize(BufferedImage image,
 float tagetMaxWidth,
 float tagetMaxHeight,
 boolean minimizeOnly)

resize an image to the greater size without distortion

Parameters:

image - initial image

tagetMaxWidth - output max width

tagetMaxHeight - output max height

minimizeOnly - source image's size greater than output image

Returns:

optimized resized image

reziseImage

public static BufferedImage reziseImage(BufferedImage image,
 float ratio,
 int colorType)

resize image with specified ratio ( ratio invalid input: '<' 0 minimize ratio > 1 maximize )

Parameters:

image - initial image

ratio - ( ratio invalid input: '<' 0 minimize ratio > 1 maximize )

colorType - the color type

Returns:

resized image

canRead

public static boolean canRead(String format)

test if e type can be read

Parameters:

format - format name, Mime Type or suffix

Returns:

true if file type can be read

canWrite

public static boolean canWrite(String format)

test if e type can be write

Parameters:

format - format format name, Mime Type or suffix

Returns:

if file type can be write