com.levigo.util.gwtawt.client

Interface Graphics

All Known Implementing Classes:

WebGraphics

public interface Graphics

Method Summary

Methods

Modifier and Type	Method and Description
void	clearRect(int x, int y, int width, int height) Clears the specified rectangle by filling it with the background color of the current drawing surface.
void	clipRect(int x, int y, int width, int height) Intersects the current clip with the specified rectangle.
void	draw(Shape shape) Strokes a shape
void	drawChars(char[] data, int offset, int length, int x, int y) Draws the text given by the specified character array, using this graphics context's current font and color.
void	drawLine(double x, double y, double x2, double y2)
void	drawString(String str, int x, int y) Draws the text given by the specified string, using this graphics context's current font and color.
void	fill(Shape shape) Fills a shape
void	forceRepaint() Forces a Repaint of the Component
com.google.gwt.canvas.dom.client.Context2d	getContext2d()
void	setClip(int x, int y, int width, int height) Sets the current clip to the rectangle specified by the given coordinates.
void	setClip(Shape clip) Sets the current clipping area to an arbitrary clip shape.
void	setColor(Color color) Sets the Color to Fill/Stroke
void	setFillColor(Color color)
void	setStroke(BasicStroke stroke) sets the line style
void	translate(int x, int y)

Method Detail

forceRepaint

void forceRepaint()

Forces a Repaint of the Component

getContext2d

com.google.gwt.canvas.dom.client.Context2d getContext2d()

Returns:

the HTML5-Canvas-Context2d Element

translate

void translate(int x,
             int y)

setColor

void setColor(Color color)

Sets the Color to Fill/Stroke

Parameters:

color - the new color

setStroke

void setStroke(BasicStroke stroke)

sets the line style

Parameters:

stroke - the style definition

Throws:

IllegalArgumentException - if stroke contains an pattern for lines - dashArray and dashPhase aren't supported

draw

void draw(Shape shape)

Strokes a shape

Parameters:

shape - the shape to stroke

fill

void fill(Shape shape)

Fills a shape

Parameters:

shape - the shape to fill

clipRect

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

Intersects the current clip with the specified rectangle. The resulting clipping area is the intersection of the current clipping area and the specified rectangle. If there is no current clipping area, either because the clip has never been set, or the clip has been cleared using setClip(null), the specified rectangle becomes the new clip. This method sets the user clip, which is independent of the clipping associated with device bounds and window visibility. This method can only be used to make the current clip smaller. To set the current clip larger, use any of the setClip methods. Rendering operations have no effect outside of the clipping area.

Parameters:

x - the x coordinate of the rectangle to intersect the clip with

y - the y coordinate of the rectangle to intersect the clip with

width - the width of the rectangle to intersect the clip with

height - the height of the rectangle to intersect the clip with

See Also:

setClip(int, int, int, int), setClip(Shape)

setClip

void setClip(int x,
           int y,
           int width,
           int height)

Sets the current clip to the rectangle specified by the given coordinates. This method sets the user clip, which is independent of the clipping associated with device bounds and window visibility. Rendering operations have no effect outside of the clipping area.

Parameters:

x - the x coordinate of the new clip rectangle.

y - the y coordinate of the new clip rectangle.

width - the width of the new clip rectangle.

height - the height of the new clip rectangle.

setClip

void setClip(Shape clip)

Sets the current clipping area to an arbitrary clip shape. Not all objects that implement the Shape interface can be used to set the clip. The only Shape objects that are guaranteed to be supported are Shape objects that are obtained via the getClip method and via Rectangle objects. This method sets the user clip, which is independent of the clipping associated with device bounds and window visibility.

Parameters:

clip - the Shape to use to set the clip

clearRect

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

Clears the specified rectangle by filling it with the background color of the current drawing surface. This operation does not use the current paint mode.

Beginning with Java 1.1, the background color of offscreen images may be system dependent. Applications should use setColor followed by fillRect to ensure that an offscreen image is cleared to a specific color.

Parameters:

x - the x coordinate of the rectangle to clear.

y - the y coordinate of the rectangle to clear.

width - the width of the rectangle to clear.

height - the height of the rectangle to clear.

drawString

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

Draws the text given by the specified string, using this graphics context's current font and color. The baseline of the leftmost character is at position (x, y) in this graphics context's coordinate system.

Parameters:

str - the string to be drawn.

x - the x coordinate.

y - the y coordinate.

Throws:

NullPointerException - if str is null.

drawChars

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

Draws the text given by the specified character array, using this graphics context's current font and color. The baseline of the first character is at position (x, y) in this graphics context's coordinate system.

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 of the baseline of the text

y - the y coordinate of the baseline of the text

Throws:

NullPointerException - if data is null.

IndexOutOfBoundsException - if offset or lengthis less than zero, or offset+length is greater than the length of the data array.

drawLine

void drawLine(double x,
            double y,
            double x2,
            double y2)

setFillColor

void setFillColor(Color color)