org.pepstock.charba.client.utils

Class AnnotationBuilder

java.lang.Object

org.pepstock.charba.client.utils.AnnotationBuilder

public final class AnnotationBuilder
extends Object

Utility to have an image to apply to canvas of chart in order to add HTML custom information on chart.
The utility is leveraging on svg+mxl and foreignObject elements.
The HTML content MUST be XML well-formed, following the xHTML specification, when passed as string.
This is the SVG XML tree, used:

 <svg xmlns="http://www.w3.org/2000/svg" width="{width}" height="{height}">
    <foreignObject width="100%" height="100%">
       <div xmlns="http://www.w3.org/1999/xhtml">
       ... HTML XML well-formed content ....
       </div>
    </foreignObject>
 </svg>
 

Drawing the image on canvas, you could get the java script error NS_ERROR_NOT_AVAILABLE which means that if even the content is well-formed, it contains some invalid characters, not allowed into xHTML.

Author:

Andrea "Stock" Stocchero

Method Summary

Modifier and Type	Method and Description
static ImageElement	build(Element htmlXmlContent, double width, double height) Creates an image to apply to canvas with the HTML content (passed as GWT element) and width and height of the resulted image.
static ImageElement	build(String htmlXmlContent, double width, double height) Creates an image to apply to canvas with the HTML content (MUST BE XML well-formed) and width and height of the resulted image.

Methods inherited from class java.lang.Object

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

Method Detail

build

public static ImageElement build(Element htmlXmlContent,
                                 double width,
                                 double height)

Creates an image to apply to canvas with the HTML content (passed as GWT element) and width and height of the resulted image. Drawing the image on canvas, you could get the java script error NS_ERROR_NOT_AVAILABLE which means that if even the content is well-formed, it contains some invalid characters, not allowed into xHTML.

Parameters:

htmlXmlContent - GWT element which represents the XML content to show

width - width of image to be created

height - height of image to be created

Returns:

an image to apply to canvas

build

public static ImageElement build(String htmlXmlContent,
                                 double width,
                                 double height)

Creates an image to apply to canvas with the HTML content (MUST BE XML well-formed) and width and height of the resulted image. Drawing the image on canvas, you could get the java script error NS_ERROR_NOT_AVAILABLE which means that if even the content is well-formed, it contains some invalid characters, not allowed into xHTML.

Parameters:

htmlXmlContent - HTML content to apply on canvas, must be XML well-formed

width - width of image to be created

height - height of image to be created

Returns:

an image to apply to canvas