com.levigo.util.gwtawt.client

Class WebGraphics

java.lang.Object

com.levigo.util.gwtawt.client.WebGraphics

All Implemented Interfaces:

Graphics

public class WebGraphics
extends Object
implements Graphics

Graphics2D replacement for GWT Works as a Wrapper around the HTML5 Context2d element

Constructor Summary

Constructors

Constructor and Description
WebGraphics(com.google.gwt.canvas.dom.client.Context2d context)
WebGraphics(com.google.gwt.canvas.dom.client.Context2d context, Component component)

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)

Methods inherited from class java.lang.Object

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

Constructor Detail

WebGraphics

public WebGraphics(com.google.gwt.canvas.dom.client.Context2d context)

WebGraphics

public WebGraphics(com.google.gwt.canvas.dom.client.Context2d context,
           Component component)

Method Detail

forceRepaint

public void forceRepaint()

Description copied from interface: Graphics

Forces a Repaint of the Component

Specified by:

forceRepaint in interface Graphics

getContext2d

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

Specified by:

getContext2d in interface Graphics

Returns:

the HTML5-Canvas-Context2d Element

translate

public void translate(int x,
             int y)

Specified by:

translate in interface Graphics

setColor

public void setColor(Color color)

Description copied from interface: Graphics

Sets the Color to Fill/Stroke

Specified by:

setColor in interface Graphics

Parameters:

color - the new color

setFillColor

public void setFillColor(Color color)

Specified by:

setFillColor in interface Graphics

setStroke

public void setStroke(BasicStroke stroke)

Description copied from interface: Graphics

sets the line style

Specified by:

setStroke in interface Graphics

Parameters:

stroke - the style definition

draw

public void draw(Shape shape)

Description copied from interface: Graphics

Strokes a shape

Specified by:

draw in interface Graphics

Parameters:

shape - the shape to stroke

fill

public void fill(Shape shape)

Description copied from interface: Graphics

Fills a shape

Specified by:

fill in interface Graphics

Parameters:

shape - the shape to fill

clipRect

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

Description copied from interface: Graphics

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.

Specified by:

clipRect in interface Graphics

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:

Graphics.setClip(int, int, int, int), Graphics.setClip(Shape)

setClip

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

Description copied from interface: Graphics

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.

Specified by:

setClip in interface Graphics

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

public void setClip(Shape clip)

Description copied from interface: Graphics

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.

Specified by:

setClip in interface Graphics

Parameters:

clip - the Shape to use to set the clip

clearRect

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

Description copied from interface: Graphics

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.

Specified by:

clearRect in interface Graphics

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

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

Description copied from interface: Graphics

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.

Specified by:

drawString in interface Graphics

Parameters:

str - the string to be drawn.

x - the x coordinate.

y - the y coordinate.

drawChars

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

Description copied from interface: Graphics

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.

Specified by:

drawChars in interface Graphics

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

drawLine

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

Specified by:

drawLine in interface Graphics