Graphic element can contain several geometric figures (curves, lines,...).
*
* If you want to use this Element, please read the Sections 8.4 and 8.5 of
* the PDF Reference Manual version 1.3 first.
*
* @see Element
*/
public class Graphic extends PdfContentByte implements Element {
/** This is a type of Graphic. */
public static final String HORIZONTAL_LINE = "HORIZONTAL";
/** This is a type of Graphic. */
public static final String BORDER = "BORDER";
/** Contains some of the attributes for this Graphic. */
private HashMap attributes;
// constructor
/**
* Constructs a Graphic-object.
*/
public Graphic() {
super(null);
}
// implementation of the Element interface
/**
* Processes the element by adding it (or the different parts) to an
* ElementListener.
*
* @param listener an ElementListener
* true if the element was processed successfully
* @return true if processing this object succeeded
*/
public boolean process(ElementListener listener) {
try {
return listener.add(this);
}
catch(DocumentException de) {
return false;
}
}
/**
* Gets the type of the text element.
*
* @return a type
*/
public int type() {
return Element.GRAPHIC;
}
/**
* Gets all the chunks in this element.
*
* @return an ArrayList
*/
public ArrayList getChunks() {
return new ArrayList();
}
/**
* Orders this graphic to draw a horizontal, centered line.
* @param linewidth the line width
* @param percentage the percentage horizontal width in relation to the margins or if negative, an absolute value
*/
public void setHorizontalLine(float linewidth, float percentage) {
if (attributes == null) attributes = new HashMap();
attributes.put(HORIZONTAL_LINE, new Object[]{new Float(linewidth), new Float(percentage), Color.black, new Integer(Element.ALIGN_CENTER)});
}
/**
* Orders this graphic to draw a horizontal line with some alignment.
* @param linewidth the line width
* @param percentage the percentage horizontal width in relation to the margins or if negative, an absolute value
* @param align the line alignment
*/
public void setHorizontalLine(float linewidth, float percentage, int align) {
if (attributes == null) attributes = new HashMap();
attributes.put(HORIZONTAL_LINE, new Object[]{new Float(linewidth), new Float(percentage), Color.black, new Integer(align)});
}
/**
* Orders this graphic to draw a horizontal, centered line.
* @param linewidth the line width
* @param percentage the percentage horizontal width in relation to the margins or if negative, an absolute value
* @param color the color of the line
*/
public void setHorizontalLine(float linewidth, float percentage, Color color) {
if (attributes == null) attributes = new HashMap();
attributes.put(HORIZONTAL_LINE, new Object[]{new Float(linewidth), new Float(percentage), color, new Integer(Element.ALIGN_CENTER)});
}
/**
* Orders this graphic to draw a horizontal, centered line.
* @param linewidth the line width
* @param percentage the percentage horizontal width in relation to the margins or if negative, an absolute value
* @param color the color of the line
* @param align the line alignment
*/
public void setHorizontalLine(float linewidth, float percentage, Color color, int align) {
if (attributes == null) attributes = new HashMap();
attributes.put(HORIZONTAL_LINE, new Object[]{new Float(linewidth), new Float(percentage), color, new Integer(align)});
}
/**
* draws a horizontal line.
* @param lineWidth width of the line
* @param color color of the line
* @param x1 start position of the line
* @param x2 end position of the line
* @param y y-coordinate of the line
*/
public void drawHorizontalLine(float lineWidth, Color color, float x1, float x2, float y) {
setLineWidth(lineWidth);
setColorStroke(color);
moveTo(x1, y);
lineTo(x2, y);
stroke();
resetRGBColorStroke();
}
/**
* Orders this graphic to draw a horizontal line.
* @param linewidth linewidth of the border
* @param extraSpace extraspace needed as marging on the page
*/
public void setBorder(float linewidth, float extraSpace) {
if (attributes == null) attributes = new HashMap();
attributes.put(BORDER, new Object[]{new Float(linewidth), new Float(extraSpace), new Color(0, 0, 0)});
}
/**
* Orders this graphic to draw a horizontal line.
* @param linewidth linewidth of the border
* @param extraSpace extraspace needed as marging on the page
* @param color color of the borderbox
*/
public void setBorder(float linewidth, float extraSpace, Color color) {
if (attributes == null) attributes = new HashMap();
attributes.put(BORDER, new Object[]{new Float(linewidth), new Float(extraSpace), color});
}
/**
* Draws a border
* @param lineWidth linewidth of the border
* @param color color of the borderbox
* @param llx lower left x coordinate
* @param lly lower left y coordinate
* @param urx upper right x coordinate
* @param ury upper right y coordinate
*/
public void drawBorder(float lineWidth, Color color, float llx, float lly, float urx, float ury) {
setLineWidth(lineWidth);
setColorStroke(color);
rectangle(llx, lly, urx - llx, ury - lly);
stroke();
resetRGBColorStroke();
}
/**
* Processes the attributes of this object.
* @param llx lower left x coordinate
* @param lly lower left y coordinate
* @param urx upper right x coordinate
* @param ury upper right y coordinate
* @param y
*/
public void processAttributes(float llx, float lly, float urx, float ury, float y) {
if (attributes == null) return;
String attribute;
Object[] o;
for (Iterator i = attributes.keySet().iterator(); i.hasNext(); ) {
attribute = (String) i.next();
o = (Object[]) attributes.get(attribute);
if (HORIZONTAL_LINE.equals(attribute)) {
float p = ((Float)o[1]).floatValue();
float w;
if (p < 0)
w = -p;
else
w = (urx - llx) * p / 100.0f;
int align = ((Integer)o[3]).intValue();
float s;
switch (align) {
case Element.ALIGN_LEFT:
s = 0;
break;
case Element.ALIGN_RIGHT:
s = urx - llx - w;
break;
default:
s = (urx - llx - w) / 2;
}
drawHorizontalLine(((Float)o[0]).floatValue(), (Color)o[2], s + llx, s + w + llx, y);
}
if (BORDER.equals(attribute)) {
float extra = ((Float)o[1]).floatValue();
drawBorder(((Float)o[0]).floatValue(), (Color)o[2], llx - extra, lly - extra, urx + extra, ury + extra);
}
}
}
}