rtfcell.java

iText是一个能够快速产生PDF文件的java类库。iText的java类对于那些要产生包含文本

                    os.write(cellVMergePrev);
                    break;
                case MERGE_BOTH_PREV:
                    os.write(RtfWriter.escape);
                    os.write(cellMergeFirst);
                    break;
            }
            switch (store.getVerticalAlignment()) {
                case Element.ALIGN_BOTTOM:
                    os.write(RtfWriter.escape);
                    os.write(cellVerticalAlignBottom);
                    break;
                case Element.ALIGN_CENTER:
                case Element.ALIGN_MIDDLE:
                    os.write(RtfWriter.escape);
                    os.write(cellVerticalAlignCenter);
                    break;
                case Element.ALIGN_TOP:
                    os.write(RtfWriter.escape);
                    os.write(cellVerticalAlignTop);
                    break;
            }

            if (((store.getBorder() & Rectangle.LEFT) == Rectangle.LEFT) &&
                    (lWidth > 0)) {
                os.write(RtfWriter.escape);
                os.write(cellBorderLeft);
                os.write(RtfWriter.escape);
                os.write(lStyle);
                os.write(RtfWriter.escape);
                os.write(RtfRow.tableBorderWidth);
                writeInt(os, (int) (lWidth * RtfWriter.TWIPSFACTOR));
                os.write(RtfWriter.escape);
                os.write(RtfRow.tableBorderColor);
                if (store.getBorderColor() == null)
                    writeInt(os, writer.addColor(new
                            Color(0, 0, 0)));
                else
                    writeInt(os, writer.addColor(store.getBorderColor()));
                os.write((byte) '\n');
            }
            if (((store.getBorder() & Rectangle.TOP) == Rectangle.TOP) && (tWidth > 0)) {
                os.write(RtfWriter.escape);
                os.write(cellBorderTop);
                os.write(RtfWriter.escape);
                os.write(tStyle);
                os.write(RtfWriter.escape);
                os.write(RtfRow.tableBorderWidth);
                writeInt(os, (int) (tWidth * RtfWriter.TWIPSFACTOR));
                os.write(RtfWriter.escape);
                os.write(RtfRow.tableBorderColor);
                if (store.getBorderColor() == null)
                    writeInt(os, writer.addColor(new
                            Color(0, 0, 0)));
                else
                    writeInt(os, writer.addColor(store.getBorderColor()));
                os.write((byte) '\n');
            }
            if (((store.getBorder() & Rectangle.BOTTOM) == Rectangle.BOTTOM) &&
                    (bWidth > 0)) {
                os.write(RtfWriter.escape);
                os.write(cellBorderBottom);
                os.write(RtfWriter.escape);
                os.write(bStyle);
                os.write(RtfWriter.escape);
                os.write(RtfRow.tableBorderWidth);
                writeInt(os, (int) (bWidth * RtfWriter.TWIPSFACTOR));
                os.write(RtfWriter.escape);
                os.write(RtfRow.tableBorderColor);
                if (store.getBorderColor() == null)
                    writeInt(os, writer.addColor(new
                            Color(0, 0, 0)));
                else
                    writeInt(os, writer.addColor(store.getBorderColor()));
                os.write((byte) '\n');
            }
            if (((store.getBorder() & Rectangle.RIGHT) == Rectangle.RIGHT) &&
                    (rWidth > 0)) {
                os.write(RtfWriter.escape);
                os.write(cellBorderRight);
                os.write(RtfWriter.escape);
                os.write(rStyle);
                os.write(RtfWriter.escape);
                os.write(RtfRow.tableBorderWidth);
                writeInt(os, (int) (rWidth * RtfWriter.TWIPSFACTOR));
                os.write(RtfWriter.escape);
                os.write(RtfRow.tableBorderColor);
                if (store.getBorderColor() == null)
                    writeInt(os, writer.addColor(new
                            Color(0, 0, 0)));
                else
                    writeInt(os, writer.addColor(store.getBorderColor()));
                os.write((byte) '\n');
            }
            os.write(RtfWriter.escape);
            os.write(cellBackgroundColor);
            if (store.getBackgroundColor() == null) {
                writeInt(os, writer.addColor(new Color(255, 255, 255)));
            } else {
                writeInt(os, writer.addColor(store.getBackgroundColor()));
            }
            os.write((byte) '\n');
            os.write(RtfWriter.escape);
            os.write(cellWidthStyle);
            os.write((byte) '\n');
            os.write(RtfWriter.escape);
            os.write(cellWidthTag);
            writeInt(os, cellWidth);
            os.write((byte) '\n');
            if (cellpadding > 0) {
                // values
                os.write(RtfWriter.escape);
                os.write(cellPaddingLeft);
                writeInt(os, cellpadding / 2);
                os.write(RtfWriter.escape);
                os.write(cellPaddingTop);
                writeInt(os, cellpadding / 2);
                os.write(RtfWriter.escape);
                os.write(cellPaddingRight);
                writeInt(os, cellpadding / 2);
                os.write(RtfWriter.escape);
                os.write(cellPaddingBottom);
                writeInt(os, cellpadding / 2);
                // unit
                os.write(RtfWriter.escape);
                os.write(cellPaddingLeftUnit);
                os.write(RtfWriter.escape);
                os.write(cellPaddingTopUnit);
                os.write(RtfWriter.escape);
                os.write(cellPaddingRightUnit);
                os.write(RtfWriter.escape);
                os.write(cellPaddingBottomUnit);
            }
            os.write(RtfWriter.escape);
            os.write(cellRightBorder);
            writeInt(os, cellRight);
        } catch (IOException e) {
            return false;
        }
        return true;
    }

    /**
     * Write the content of the <code>RtfCell</code>.
     *
     * @param os The <code>OutputStream</code> to which to write the content of
     * the <code>RtfCell</code> to.
     * @return true if writing the cell content succeeded
     * @throws DocumentException
     */
    public boolean writeCellContent(ByteArrayOutputStream os) throws DocumentException {
        try {
            if (mergeType == MERGE_HORIZ_PREV || mergeType == MERGE_BOTH_PREV) {
                return true;
            }
            
            if (!emptyCell) {
                Iterator cellIterator = store.getElements();
                Paragraph container = null;
                while (cellIterator.hasNext()) {
                    Element element = (Element) cellIterator.next();
                    // should we wrap it in a paragraph
                    if(!(element instanceof Paragraph)) {
                        if(container != null) {
                            container.add(element);
                        } else {
                            container = new Paragraph();
                            container.setAlignment(store.getHorizontalAlignment());
                            container.add(element);
                        }
                    } else {
                        if(container != null) {
                            writer.addElement(container, os);
                            container = null;
                        }
                        
                        
                        // if horizontal alignment is undefined overwrite
                        // with that of enclosing cell
                        if (element instanceof Paragraph && ((Paragraph) element).getAlignment() == Element.ALIGN_UNDEFINED) {
                            ((Paragraph) element).setAlignment(store.getHorizontalAlignment());
                        }
                        writer.addElement(element, os);
                        if (element.type() == Element.PARAGRAPH && cellIterator.hasNext()) {
                            os.write(RtfWriter.escape);
                            os.write(RtfWriter.paragraph);
                        }
                    }
                }
                if(container != null) {
                    writer.addElement(container, os);
                    container =null;
                }
            } else {
                os.write(RtfWriter.escape);
                os.write(RtfWriter.paragraphDefaults);
                os.write(RtfWriter.escape);
                os.write(cellInTable);
            }
            os.write(RtfWriter.escape);
            os.write(cellEnd);
        } catch (IOException e) {
            return false;
        }
        return true;
    }

    /**
     * Sets the merge type and the <code>RtfCell</code> with which this
     * <code>RtfCell</code> is to be merged.
     *
     * @param mergeType The merge type specifies the kind of merge to be applied
     * (MERGE_HORIZ_PREV, MERGE_VERT_PREV, MERGE_BOTH_PREV)
     * @param mergeCell The <code>RtfCell</code> that the cell at x and y is to
     * be merged with
     */
    public void setMerge(int mergeType, RtfCell mergeCell) {
        this.mergeType = mergeType;
        store = mergeCell.getStore();
    }

    /**
     * Get the <code>Cell</code> with the actual content.
     *
     * @return <code>Cell</code> which is contained in the <code>RtfCell</code>
     */
    public Cell getStore() {
        return store;
    }

    /**
     * Get the with of this <code>RtfCell</code>
     *
     * @return Width of the current <code>RtfCell</code>
     */
    public int getCellWidth() {
        return cellWidth;
    }

    /**
     * sets the width of the cell
     * @param value a width
     */
    public void setCellWidth(int value) {
        cellWidth = value;
    }

    /**
     * Get the position of the right border of this <code>RtfCell</code>.
     * @return position of the right border
     */
    public int getCellRight() {
        return cellRight;
    }


    /**
     * Sets the right position of the cell
     * @param value a cell position
     */
    public void setCellRight(int value) {
        cellRight = value;
    }

    /**
     * Write an Integer to the Outputstream.
     *
     * @param out The <code>OutputStream</code> to be written to.
     * @param i The int to be written.
     * @throws IOException
     */
    private void writeInt(ByteArrayOutputStream out, int i) throws IOException {
        out.write(Integer.toString(i).getBytes());
    }
}