Class Picture

java.lang.Object
  Picture

public class Picture
extends Object

This class allows you to view and edit pictures.

Constructor Summary

Picture()
Constructs a blank picture.

Method Summary

void	border(int width) Adds a black border to the image.
Color	getColorAt(int x, int y) Gets the color of a pixel.
int	getHeight() Gets the height of this picture.
int	getWidth() Gets the width of this picture.
void	load(String source) Loads a picture from a given source.
void	move(int dx, int dy) Moves this picture by the given amount in x- and y-direction.
void	pick() Displays a file chooser for picking a picture.
void	reload() Reloads this picture, undoing any manipulations.
void	scale(int newWidth, int newHeight) Scales this picture to a new size.
void	setColorAt(int x, int y, Color c) Sets the color of a pixel.

Methods inherited from class java.lang.Object

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

Constructor Detail

Picture

public Picture()

Constructs a blank picture.

Method Detail

getWidth

public int getWidth()

Gets the width of this picture.

Returns:

the width

getHeight

public int getHeight()

Gets the height of this picture.

Returns:

the height

load

public void load(String source)

Loads a picture from a given source.

Parameters:

source - the image source. If the source starts with http://, it is a URL, otherwise, a filename.

reload

public void reload()

Reloads this picture, undoing any manipulations.

pick

public void pick()

Displays a file chooser for picking a picture.

move

public void move(int dx,
                 int dy)

Moves this picture by the given amount in x- and y-direction.

Parameters:

dx - the offset in the x-direction

dy - the offset in the y-direction

scale

public void scale(int newWidth,
                  int newHeight)

Scales this picture to a new size. If the new size is smaller than the old size, the remainder is filled with transparent pixels. If it is larger, it is clipped.

Parameters:

newWidth - the new width of the picture

newHeight - the new height of the picture

border

public void border(int width)

Adds a black border to the image.

Parameters:

width - the border width

getColorAt

public Color getColorAt(int x,
                        int y)

Gets the color of a pixel.

Parameters:

x - the column index (between 0 and getWidth() - 1)

y - the row index (between 0 and getHeight() - 1)

Returns:

the color of the pixel at position (x, y)

setColorAt

public void setColorAt(int x,
                       int y,
                       Color c)

Sets the color of a pixel.

Parameters:

x - the column index (between 0 and getWidth() - 1)

y - the row index (between 0 and getHeight() - 1)

c - the color for the pixel at position (x, y)