Table to Image

Aspose.Words Product Family
25

@zhengkai Here is java version of the code:

Document doc = new Document("C:\\Temp\\in.docx");
DocumentBuilder builder = new DocumentBuilder(doc);

// Get all top level tables.
Node[] tables = doc.getChildNodes(NodeType.TABLE, true).toArray();

// Render tables to images and replace.
for (Node tableNode : tables)
{
    // process only top level tables
    if (tableNode.getAncestor(NodeType.TABLE) != null)
        continue;

    Table table = (Table)tableNode;
    byte[] tableImage = renderTable(table);
    // insert paragraph before the table.
    Paragraph p = new Paragraph(doc);
    table.getParentNode().insertBefore(p, table);
    // Move document builder to the crete paragraph and insert the image.
    builder.moveTo(p);
    builder.insertImage(tableImage);
    // Remove the table
    table.remove();
}
doc.save("C:\\Temp\\out.docx");

public static byte[] renderTable(Table tableToRender) throws Exception
{
    Document oneTableDoc = (Document)tableToRender.getDocument().deepClone(false);
    oneTableDoc.ensureMinimum();
    oneTableDoc.getFirstSection().getBody().prependChild(oneTableDoc.importNode(tableToRender, true, ImportFormatMode.USE_DESTINATION_STYLES));
        
    // Set maximum allowed page height
    oneTableDoc.getFirstSection().getPageSetup().setPageHeight(1584);
        
    LayoutCollector collector = new LayoutCollector(oneTableDoc);
    LayoutEnumerator enumerator = new LayoutEnumerator(oneTableDoc);
        
    Table table = oneTableDoc.getFirstSection().getBody().getTables().get(0);
        
    // Calculate table size.
    // For demonstration purposes the example purposes the while table is on the same page.
    enumerator.setCurrent(collector.getEntity(table.getFirstRow().getFirstCell().getFirstParagraph()));
    int startPageIndex = enumerator.getPageIndex();
    // Move enumerator to a row.
    while (enumerator.getType()!= LayoutEntityType.ROW)
        enumerator.moveParent();
        
    double top = enumerator.getRectangle().y;
    double left = enumerator.getRectangle().x;
        
    // Move enumerator to the last row.
    enumerator.setCurrent(collector.getEntity(table.getLastRow().getFirstCell().getFirstParagraph()));
    int endPageIndex = enumerator.getPageIndex();
    // Move enumerator to a row.
    while (enumerator.getType()!= LayoutEntityType.ROW)
        enumerator.moveParent();
        
    double bottom = enumerator.getRectangle().y + enumerator.getRectangle().height;
    double right = enumerator.getRectangle().x + enumerator.getRectangle().width;
        
    // Reset margins
    PageSetup ps = oneTableDoc.getFirstSection().getPageSetup();
    ps.setPageWidth(ps.getPageWidth()-ps.getLeftMargin()-ps.getRightMargin());
    ps.setLeftMargin(0);
    ps.setRightMargin(0);
    ps.setPageHeight(ps.getPageHeight()-ps.getTopMargin()-ps.getBottomMargin());
    ps.setTopMargin(0);
    ps.setBottomMargin(0);
        
    // Set calculated width
    ps.setPageWidth(right - left);
    // Do not set page height if table spans several pages.
    if(startPageIndex == endPageIndex)
        ps.setPageHeight(bottom - top);
        
    oneTableDoc.updatePageLayout();
    
    // Render table to image and return image bytes
    ByteArrayOutputStream tableImageStream = new ByteArrayOutputStream();
    oneTableDoc.save(tableImageStream, SaveFormat.PNG);
    return tableImageStream.toByteArray();
}