pdfline.java

源码包含生成 PDF 和 HTML 的类库

                    return left + (width / 2f);
                default:
                    return left;
            }
        }
    }
    
    /**
     * Checks if this line has to be justified.
     *
     * @return	<CODE>true</CODE> if the alignment equals <VAR>ALIGN_JUSTIFIED</VAR> and there is some width left.
     */
    
    public boolean hasToBeJustified() {
        return ((alignment == Element.ALIGN_JUSTIFIED || alignment == Element.ALIGN_JUSTIFIED_ALL) && width != 0);
    }
    
    /**
     * Resets the alignment of this line.
     * <P>
     * The alignment of the last line of for instance a <CODE>Paragraph</CODE>
     * that has to be justified, has to be reset to <VAR>ALIGN_LEFT</VAR>.
     */
    
    public void resetAlignment() {
        if (alignment == Element.ALIGN_JUSTIFIED) {
            alignment = Element.ALIGN_LEFT;
        }
    }
    
    /** Adds extra indentation to the left (for Paragraph.setFirstLineIndent). */
    void setExtraIndent(float extra) {
    	left += extra;
    	width -= extra;
    }
    
    /**
     * Returns the width that is left, after a maximum of characters is added to the line.
     *
     * @return	a value
     */
    
    float widthLeft() {
        return width;
    }
    
    /**
     * Returns the number of space-characters in this line.
     *
     * @return	a value
     */
    
    int numberOfSpaces() {
        String string = toString();
        int length = string.length();
        int numberOfSpaces = 0;
        for (int i = 0; i < length; i++) {
            if (string.charAt(i) == ' ') {
                numberOfSpaces++;
            }
        }
        return numberOfSpaces;
    }
    
    /**
     * Sets the listsymbol of this line.
     * <P>
     * This is only necessary for the first line of a <CODE>ListItem</CODE>.
     *
     * @param listItem the list symbol
     */
    
    public void setListItem(ListItem listItem) {
        this.listSymbol = listItem.getListSymbol();
        this.symbolIndent = listItem.getIndentationLeft();
    }
    
    /**
     * Returns the listsymbol of this line.
     *
     * @return	a <CODE>PdfChunk</CODE> if the line has a listsymbol; <CODE>null</CODE> otherwise
     */
    
    public Chunk listSymbol() {
        return listSymbol;
    }
    
    /**
     * Return the indentation needed to show the listsymbol.
     *
     * @return	a value
     */
    
    public float listIndent() {
        return symbolIndent;
    }
    
    /**
     * Get the string representation of what is in this line.
     *
     * @return	a <CODE>String</CODE>
     */
    
    public String toString() {
        StringBuffer tmp = new StringBuffer();
        for (Iterator i = line.iterator(); i.hasNext(); ) {
            tmp.append(((PdfChunk) i.next()).toString());
        }
        return tmp.toString();
    }
    
    /**
     * Returns the length of a line in UTF32 characters
     * @return	the length in UTF32 characters
     * @since	2.1.2
     */
    public int GetLineLengthUtf32() {
        int total = 0;
        for (Iterator i = line.iterator(); i.hasNext();) {
            total += ((PdfChunk)i.next()).lengthUtf32();
        }
        return total;
    }
    
    /**
     * Checks if a newline caused the line split.
     * @return <CODE>true</CODE> if a newline caused the line split
     */
    public boolean isNewlineSplit() {
        return newlineSplit && (alignment != Element.ALIGN_JUSTIFIED_ALL);
    }
    
    /**
     * Gets the index of the last <CODE>PdfChunk</CODE> with metric attributes
     * @return the last <CODE>PdfChunk</CODE> with metric attributes
     */
    public int getLastStrokeChunk() {
        int lastIdx = line.size() - 1;
        for (; lastIdx >= 0; --lastIdx) {
            PdfChunk chunk = (PdfChunk)line.get(lastIdx);
            if (chunk.isStroked())
                break;
        }
        return lastIdx;
    }
    
    /**
     * Gets a <CODE>PdfChunk</CODE> by index.
     * @param idx the index
     * @return the <CODE>PdfChunk</CODE> or null if beyond the array
     */
    public PdfChunk getChunk(int idx) {
        if (idx < 0 || idx >= line.size())
            return null;
        return (PdfChunk)line.get(idx);
    }
    
    /**
     * Gets the original width of the line.
     * @return the original width of the line
     */
    public float getOriginalWidth() {
        return originalWidth;
    }
    
    /**
     * Gets the maximum size of all the fonts used in this line
     * including images.
     * @return maximum size of all the fonts used in this line
     */
    float getMaxSizeSimple() {
        float maxSize = 0;
        for (int k = 0; k < line.size(); ++k) {
            PdfChunk chunk = (PdfChunk)line.get(k);
            if (!chunk.isImage()) {
                maxSize = Math.max(chunk.font().size(), maxSize);
            }
            else {
                maxSize = Math.max(chunk.getImage().getScaledHeight() + chunk.getImageOffsetY() , maxSize);
            }
        }
        return maxSize;
    }
    
    boolean isRTL() {
        return isRTL;
    }
    
    /**
     * Gets the number of separators in the line.
     * @return	the number of separators in the line
     * @since	2.1.2
     */
    int getSeparatorCount() {
    	int s = 0;
    	PdfChunk ck;
        for (Iterator i = line.iterator(); i.hasNext(); ) {
        	ck = (PdfChunk)i.next();
        	if (ck.isTab()) {
        		return 0;
        	}
        	if (ck.isHorizontalSeparator()) {
        		s++;
        	}
        }
        return s;
    }
    
    /**
     * Gets a width corrected with a charSpacing and wordSpacing.
     * @param charSpacing
     * @param wordSpacing
     * @return a corrected width
     */
    public float getWidthCorrected(float charSpacing, float wordSpacing) {
        float total = 0;
        for (int k = 0; k < line.size(); ++k) {
            PdfChunk ck = (PdfChunk)line.get(k);
            total += ck.getWidthCorrected(charSpacing, wordSpacing);
        }
        return total;
    }
    
/**
 * Gets the maximum size of the ascender for all the fonts used
 * in this line.
 * @return maximum size of all the ascenders used in this line
 */
   public float getAscender() {
       float ascender = 0;
       for (int k = 0; k < line.size(); ++k) {
           PdfChunk ck = (PdfChunk)line.get(k);
           if (ck.isImage())
               ascender = Math.max(ascender, ck.getImage().getScaledHeight() + ck.getImageOffsetY());
           else {
               PdfFont font = ck.font();
               ascender = Math.max(ascender, font.getFont().getFontDescriptor(BaseFont.ASCENT, font.size()));
           }
       }
       return ascender;
   }

/**
 * Gets the biggest descender for all the fonts used 
 * in this line.  Note that this is a negative number.
 * @return maximum size of all the ascenders used in this line
 */
    public float getDescender() {
        float descender = 0;
        for (int k = 0; k < line.size(); ++k) {
            PdfChunk ck = (PdfChunk)line.get(k);
            if (ck.isImage())
                descender = Math.min(descender, ck.getImageOffsetY());
            else {
                PdfFont font = ck.font();
                descender = Math.min(descender, font.getFont().getFontDescriptor(BaseFont.DESCENT, font.size()));
            }
        }
        return descender;
    }
}