public class GrayScaleImage extends ImageObject
Modifier and Type | Field and Description |
---|---|
static int |
OPTION_BLACK_TO_GRAY |
int |
options |
background, height, width
CREATE_OPTION_DONT_SCALE_UP, CREATE_OPTION_IGNORE_ALPHA, CREATE_OPTION_KEEP_ASPECT_RATIO, CREATE_OPTION_ROUGH_SCALING, SCAN_LINE_BYTE_ARRAY, SCAN_LINE_INT_ARRAY, TYPE_ARGB, TYPE_GRAY_SCALE_16, TYPE_GRAY_SCALE_2, TYPE_GRAY_SCALE_256, TYPE_GRAY_SCALE_4, TYPE_INDEXED_16, TYPE_INDEXED_2, TYPE_INDEXED_256, TYPE_INDEXED_4, TYPE_MASK, TYPE_MONO, TYPE_RGB, TYPE_UNKNOWN
Constructor and Description |
---|
GrayScaleImage()
If you call this constructor do not attempt to use it
unless you call setFor().
|
GrayScaleImage(ImageData source) |
Modifier and Type | Method and Description |
---|---|
void |
clear()
If you call this do not use this Object unless you use setFor().
|
void |
draw(Graphics g,
int x,
int y,
int options) |
void |
getImageScanLines(int startLine,
int numLines,
Object destArray,
int offset,
int destScanLineLength)
Place a set of scan lines into a destination array.
|
int[] |
getPixels(int[] dest,
int offset,
int x,
int y,
int width,
int height,
int rowStride)
Retrieve the pixels from the Image in encoded ARGB values.
|
boolean |
isWriteableImage()
Returns if you can write data to the ImageData.
|
GrayScaleImage |
setFor(ImageData source) |
void |
setImageScanLines(int startLine,
int numLines,
Object sourceArray,
int offset,
int sourceScanLineLength)
Place a set of scan lines from a source Array into the ImageData.
|
boolean |
setPixels(int[] src,
int offset,
int x,
int y,
int width,
int height,
int rowStride)
Set the pixels in the IImage in encoded ARGB values.
|
boolean |
usesAlpha()
Returns whether the image uses the Alpha channel.
|
createImageFor, draw, draw, free, freeImage, getBackground, getCompatibleImagePoints, getDPI, getHeight, getImageColorTable, getImageData, getImageHeight, getImageScanLineLength, getImageScanLineType, getImageType, getImageWidth, getNativeDrawable, getPixelsUsingScanLines, getScanLinesUsingPixels, getWidth, isReadableImage, scanLinesComplete, setPixelsUsingScanLines, setScanLinePixels, setScanLinesUsingPixels
public static final int OPTION_BLACK_TO_GRAY
public int options
public GrayScaleImage()
public GrayScaleImage(ImageData source)
public GrayScaleImage setFor(ImageData source)
public void clear()
public boolean usesAlpha()
IImage
public void getImageScanLines(int startLine, int numLines, Object destArray, int offset, int destScanLineLength) throws IllegalStateException
ImageData
IllegalStateException
public void setImageScanLines(int startLine, int numLines, Object sourceArray, int offset, int sourceScanLineLength) throws IllegalStateException
ImageData
IllegalStateException
public boolean isWriteableImage()
ImageData
public int[] getPixels(int[] dest, int offset, int x, int y, int width, int height, int rowStride)
ImageData
dest
- The destination int array. If this is null then a new array should be created.offset
- The offset into the array to start placing pixels.x
- the x co-ordinate within the image.y
- the y co-ordinate within the image.width
- the width of the pixel block to get.height
- the height of the pixel block to get.rowStride
- the number of int values between each row in the destination int array. If this is 0 it
will be assumed to be equal to width.public boolean setPixels(int[] src, int offset, int x, int y, int width, int height, int rowStride)
ImageData
src
- The source int array.offset
- The offset into the array to start retrieving pixels.x
- the x co-ordinate within the image.y
- the y co-ordinate within the image.width
- the width of the pixel block to get.height
- the height of the pixel block to get.rowStride
- the number of int values between each row in the source int array. If this is 0 it
will be assumed to be equal to width.public void draw(Graphics g, int x, int y, int options)