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Class java.awt.Graphics

java.lang.Object
|
   +----java.awt.Graphics

public class Graphics

extends Object

Graphics()

Constructs a new Graphics Object.

clearRect(int, int, int, int)

Clears the specified rectangle by filling it with the current background color of the current drawing surface.

clipRect(int, int, int, int)

Clips to a rectangle.

copyArea(int, int, int, int, int, int)

Copies an area of the screen.

create()

Creates a new Graphics Object that is a copy of the original Graphics Object.

create(int, int, int, int)

Creates a new Graphics Object with the specified parameters, based on the original Graphics Object.

dispose()

Disposes of this graphics context.

draw3DRect(int, int, int, int, boolean)

Draws a highlighted 3-D rectangle.

drawArc(int, int, int, int, int, int)

Draws an arc bounded by the specified rectangle starting at startAngle, where 0 degrees is at the 3-o'clock position, and extending for arcAngle degrees.

drawBytes(byte[], int, int, int, int)

Draws the specified bytes using the current font and color.

drawChars(char[], int, int, int, int)

Draws the specified characters using the current font and color.

drawImage(Image, int, int, Color, ImageObserver)

Draws the specified image at the specified coordinate (x, y), with the given solid background Color.

drawImage(Image, int, int, ImageObserver)

Draws the specified image at the specified coordinate (x, y).

drawImage(Image, int, int, int, int, Color, ImageObserver)

Draws the specified image inside the specified rectangle, with the given solid background Color.

drawImage(Image, int, int, int, int, ImageObserver)

Draws the specified image inside the specified rectangle.

drawLine(int, int, int, int)

Draws a line between the coordinates (x1,y1) and (x2,y2).

drawOval(int, int, int, int)

Draws an oval inside the specified rectangle using the current color.

drawPolygon(int[], int[], int)

Draws a polygon defined by an array of x points and y points.

drawPolygon(Polygon)

Draws a polygon defined by the specified point.

drawRect(int, int, int, int)

Draws the outline of the specified rectangle using the current color.

drawRoundRect(int, int, int, int, int, int)

Draws an outlined rounded corner rectangle using the current color.

drawString(String, int, int)

Draws the specified String using the current font and color.

fill3DRect(int, int, int, int, boolean)

Paints a highlighted 3-D rectangle using the current color.

fillArc(int, int, int, int, int, int)

Fills an arc using the current color.

fillOval(int, int, int, int)

Fills an oval inside the specified rectangle using the current color.

fillPolygon(int[], int[], int)

Fills a polygon with the current color using an even-odd fill rule (otherwise known as an alternating rule).

fillPolygon(Polygon)

Fills the specified polygon with the current color using an even-odd fill rule (otherwise known as an alternating rule).

fillRect(int, int, int, int)

Fills the specified rectangle with the current color.

fillRoundRect(int, int, int, int, int, int)

Draws a rounded rectangle filled in with the current color.

finalize()

Disposes of this graphics context once it is no longer referenced.

getClipRect()

Returns the bounding rectangle of the current clipping area.

getColor()

Gets the current color.

getFont()

Gets the current font.

getFontMetrics()

Gets the current font metrics.

getFontMetrics(Font)

Gets the current font metrics for the specified font.

setColor(Color)

Sets the current color to the specified color.

setFont(Font)

Sets the font for all subsequent text-drawing operations.

setPaintMode()

Sets the paint mode to overwrite the destination with the current color.

setXORMode(Color)

Sets the paint mode to alternate between the current color and the new specified color.

toString()

Returns a String object representing this Graphic's value.

translate(int, int)

Translates the specified parameters into the origin of the graphics context.

protected Graphics()

Constructs a new Graphics Object. Graphic contexts cannot be created directly. They must be obtained from another graphics context or created by a Component.

See Also:

getGraphics, create

public abstract Graphics create()

Creates a new Graphics Object that is a copy of the original Graphics Object.

public Graphics create(int x,
                         int y,
                         int width,
                         int height)

Creates a new Graphics Object with the specified parameters, based on the original Graphics Object. This method translates the specified parameters, x and y, to the proper origin coordinates and then clips the Graphics Object to the area.

Parameters:

x - the x coordinate

y - the y coordinate

width - the width of the area

height - the height of the area

See Also:

translate

public abstract void translate(int x,
                                 int y)

Translates the specified parameters into the origin of the graphics context. All subsequent operations on this graphics context will be relative to this origin.

Parameters:

x - the x coordinate

y - the y coordinate

public abstract Color getColor()

Gets the current color.

See Also:

setColor

public abstract void setColor(Color c)

Sets the current color to the specified color. All subsequent graphics operations will use this specified color.

Parameters:

c - the color to be set

See Also:

Color, getColor

public abstract void setPaintMode()

Sets the paint mode to overwrite the destination with the current color.

public abstract void setXORMode(Color c1)

Sets the paint mode to alternate between the current color and the new specified color. When drawing operations are performed, pixels which are the current color will be changed to the specified color and vice versa. Pixels of colors other than those two colors will be changed in an unpredictable, but reversible manner - if you draw the same figure twice then all pixels will be restored to their original values.

Parameters:

c1 - the second color

public abstract Font getFont()

Gets the current font.

See Also:

setFont

public abstract void setFont(Font font)

Sets the font for all subsequent text-drawing operations.

Parameters:

font - the specified font

See Also:

Font, getFont, drawString, drawBytes, drawChars

public FontMetrics getFontMetrics()

Gets the current font metrics.

See Also:

getFont

public abstract FontMetrics getFontMetrics(Font f)

Gets the current font metrics for the specified font.

Parameters:

f - the specified font

See Also:

getFont, getFontMetrics

public abstract Rectangle getClipRect()

Returns the bounding rectangle of the current clipping area.

See Also:

clipRect

public abstract void clipRect(int x,
                                int y,
                                int width,
                                int height)

Clips to a rectangle. The resulting clipping area is the intersection of the current clipping area and the specified rectangle. Graphic operations have no effect outside of the clipping area.

Parameters:

x - the x coordinate

y - the y coordinate

width - the width of the rectangle

height - the height of the rectangle

See Also:

getClipRect

public abstract void copyArea(int x,
                                int y,
                                int width,
                                int height,
                                int dx,
                                int dy)

Copies an area of the screen.

Parameters:

x - the x-coordinate of the source

y - the y-coordinate of the source

width - the width

height - the height

dx - the horizontal distance

dy - the vertical distance

public abstract void drawLine(int x1,
                                int y1,
                                int x2,
                                int y2)

Draws a line between the coordinates (x1,y1) and (x2,y2). The line is drawn below and to the left of the logical coordinates.

Parameters:

x1 - the first point's x coordinate

y1 - the first point's y coordinate

x2 - the second point's x coordinate

y2 - the second point's y coordinate

public abstract void fillRect(int x,
                                int y,
                                int width,
                                int height)

Fills the specified rectangle with the current color.

Parameters:

x - the x coordinate

y - the y coordinate

width - the width of the rectangle

height - the height of the rectangle

See Also:

drawRect, clearRect

public void drawRect(int x,
                       int y,
                       int width,
                       int height)

Draws the outline of the specified rectangle using the current color. Use drawRect(x, y, width-1, height-1) to draw the outline inside the specified rectangle.

Parameters:

x - the x coordinate

y - the y coordinate

width - the width of the rectangle

height - the height of the rectangle

See Also:

fillRect, clearRect

public abstract void clearRect(int x,
                                 int y,
                                 int width,
                                 int height)

Clears the specified rectangle by filling it with the current background color of the current drawing surface. Which drawing surface it selects depends on how the graphics context was created.

Parameters:

x - the x coordinate

y - the y coordinate

width - the width of the rectangle

height - the height of the rectangle

See Also:

fillRect, drawRect

public abstract void drawRoundRect(int x,
                                     int y,
                                     int width,
                                     int height,
                                     int arcWidth,
                                     int arcHeight)

Draws an outlined rounded corner rectangle using the current color.

Parameters:

x - the x coordinate

y - the y coordinate

width - the width of the rectangle

height - the height of the rectangle

arcWidth - the horizontal diameter of the arc at the four corners

arcHeight - the horizontal diameter of the arc at the four corners

See Also:

fillRoundRect

public abstract void fillRoundRect(int x,
                                     int y,
                                     int width,
                                     int height,
                                     int arcWidth,
                                     int arcHeight)

Draws a rounded rectangle filled in with the current color.

Parameters:

x - the x coordinate

y - the y coordinate

width - the width of the rectangle

height - the height of the rectangle

arcWidth - the horizontal diameter of the arc at the four corners

arcHeight - the horizontal diameter of the arc at the four corners

See Also:

drawRoundRect

public void draw3DRect(int x,
                         int y,
                         int width,
                         int height,
                         boolean raised)

Draws a highlighted 3-D rectangle.

Parameters:

x - the x coordinate

y - the y coordinate

width - the width of the rectangle

height - the height of the rectangle

raised - a boolean that states whether the rectangle is raised or not

public void fill3DRect(int x,
                         int y,
                         int width,
                         int height,
                         boolean raised)

Paints a highlighted 3-D rectangle using the current color.

Parameters:

x - the x coordinate

y - the y coordinate

width - the width of the rectangle

height - the height of the rectangle

raised - a boolean that states whether the rectangle is raised or not

public abstract void drawOval(int x,
                                int y,
                                int width,
                                int height)

Draws an oval inside the specified rectangle using the current color.

Parameters:

x - the x coordinate

y - the y coordinate

width - the width of the rectangle

height - the height of the rectangle

See Also:

fillOval

public abstract void fillOval(int x,
                                int y,
                                int width,
                                int height)

Fills an oval inside the specified rectangle using the current color.

Parameters:

x - the x coordinate

y - the y coordinate

width - the width of the rectangle

height - the height of the rectangle

See Also:

drawOval

public abstract void drawArc(int x,
                               int y,
                               int width,
                               int height,
                               int startAngle,
                               int arcAngle)

Draws an arc bounded by the specified rectangle starting at startAngle, where 0 degrees is at the 3-o'clock position, and extending for arcAngle degrees. Positive values for arcAngle indicate counter-clockwise rotations, negative values indicate clockwise rotations.

Parameters:

x - the x coordinate

y - the y coordinate

width - the width of the rectangle

height - the height of the rectangle

startAngle - the beginning angle

arcAngle - the angle of the arc (relative to startAngle).

See Also:

fillArc

public abstract void fillArc(int x,
                               int y,
                               int width,
                               int height,
                               int startAngle,
                               int arcAngle)

Fills an arc using the current color. This generates a pie shape. The extent of the arc is the same as is described for the drawArc method.

Parameters:

x - the x coordinate

y - the y coordinate

width - the width of the arc

height - the height of the arc

startAngle - the beginning angle

arcAngle - the angle of the arc (relative to startAngle).

See Also:

drawArc

public abstract void drawPolygon(int xPoints[],
                                   int yPoints[],
                                   int nPoints)

Draws a polygon defined by an array of x points and y points.

Parameters:

xPoints - an array of x points

yPoints - an array of y points

nPoints - the total number of points

See Also:

fillPolygon

public void drawPolygon(Polygon p)

Draws a polygon defined by the specified point.

Parameters:

p - the specified polygon

See Also:

fillPolygon

public abstract void fillPolygon(int xPoints[],
                                   int yPoints[],
                                   int nPoints)

Fills a polygon with the current color using an even-odd fill rule (otherwise known as an alternating rule).

Parameters:

xPoints - an array of x points

yPoints - an array of y points

nPoints - the total number of points

See Also:

drawPolygon

public void fillPolygon(Polygon p)

Fills the specified polygon with the current color using an even-odd fill rule (otherwise known as an alternating rule).

Parameters:

p - the polygon

See Also:

drawPolygon

public abstract void drawString(String str,
                                  int x,
                                  int y)

Draws the specified String using the current font and color. The x,y position is the starting point of the baseline of the String.

Parameters:

str - the String to be drawn

x - the x coordinate

y - the y coordinate

See Also:

drawChars, drawBytes

public void drawChars(char data[],
                        int offset,
                        int length,
                        int x,
                        int y)

Draws the specified characters using the current font and color.

Parameters:

data - the array of characters to be drawn

offset - the start offset in the data

length - the number of characters to be drawn

x - the x coordinate

y - the y coordinate

See Also:

drawString, drawBytes

public void drawBytes(byte data[],
                        int offset,
                        int length,
                        int x,
                        int y)

Draws the specified bytes using the current font and color.

Parameters:

data - the data to be drawn

offset - the start offset in the data

length - the number of bytes that are drawn

x - the x coordinate

y - the y coordinate

See Also:

drawString, drawChars

public abstract boolean drawImage(Image img,
                                    int x,
                                    int y,
ImageObserver observer)

Draws the specified image at the specified coordinate (x, y). If the image is incomplete the image observer will be notified later.

Parameters:

img - the specified image to be drawn

x - the x coordinate

y - the y coordinate

observer - notifies if the image is complete or not

See Also:

Image, ImageObserver

public abstract boolean drawImage(Image img,
                                    int x,
                                    int y,
                                    int width,
                                    int height,
ImageObserver observer)

Draws the specified image inside the specified rectangle. The image is scaled if necessary. If the image is incomplete the image observer will be notified later.

Parameters:

img - the specified image to be drawn

x - the x coordinate

y - the y coordinate

width - the width of the rectangle

height - the height of the rectangle

observer - notifies if the image is complete or not

See Also:

Image, ImageObserver

public abstract boolean drawImage(Image img,
                                    int x,
                                    int y,
Color bgcolor,
ImageObserver observer)

Draws the specified image at the specified coordinate (x, y), with the given solid background Color. If the image is incomplete the image observer will be notified later.

Parameters:

img - the specified image to be drawn

x - the x coordinate

y - the y coordinate

observer - notifies if the image is complete or not

See Also:

Image, ImageObserver

public abstract boolean drawImage(Image img,
                                    int x,
                                    int y,
                                    int width,
                                    int height,
Color bgcolor,
ImageObserver observer)

Draws the specified image inside the specified rectangle, with the given solid background Color. The image is scaled if necessary. If the image is incomplete the image observer will be notified later.

Parameters:

img - the specified image to be drawn

x - the x coordinate

y - the y coordinate

width - the width of the rectangle

height - the height of the rectangle

observer - notifies if the image is complete or not

See Also:

Image, ImageObserver

public abstract void dispose()

Disposes of this graphics context. The Graphics context cannot be used after being disposed of.

See Also:

finalize

public void finalize()

Disposes of this graphics context once it is no longer referenced.

Overrides:

finalize in class Object

See Also:

dispose

public String toString()

Returns a String object representing this Graphic's value.

Overrides:

toString in class Object

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