com.aspose.words

Example:

Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);

// Insert a table with a negative indent, which will push it to the left past the left page boundary.
Table table = builder.startTable();
builder.insertCell();
builder.write("Row 1, Cell 1");
builder.insertCell();
builder.write("Row 1, Cell 2");
builder.endTable();
table.setLeftIndent(-36);
table.setPreferredWidth(PreferredWidth.fromPoints(144.0));

builder.insertBreak(BreakType.PARAGRAPH_BREAK);

// Insert a table with a positive indent, which will push the table to the right.
table = builder.startTable();
builder.insertCell();
builder.write("Row 1, Cell 1");
builder.insertCell();
builder.write("Row 1, Cell 2");
builder.endTable();
table.setLeftIndent(36.0);
table.setPreferredWidth(PreferredWidth.fromPoints(144.0));

// When we save a document to HTML, Aspose.Words will only preserve negative indents
// such as the one we have applied to the first table if we set the "AllowNegativeIndent" flag
// in a SaveOptions object that we will pass to "true".
HtmlSaveOptions options = new HtmlSaveOptions(SaveFormat.HTML);
{
    options.setAllowNegativeIndent(allowNegativeIndent);
    options.setTableWidthOutputMode(HtmlElementSizeOutputMode.RELATIVE_ONLY);
}

doc.save(getArtifactsDir() + "HtmlSaveOptions.NegativeIndent.html", options);

String outDocContents = FileUtils.readFileToString(new File(getArtifactsDir() + "HtmlSaveOptions.NegativeIndent.html"), StandardCharsets.UTF_8);

if (allowNegativeIndent) {
    Assert.assertTrue(outDocContents.contains(
            "<table cellspacing=\"0\" cellpadding=\"0\" style=\"margin-left:-41.65pt; border:0.75pt solid #000000; -aw-border:0.5pt single; border-collapse:collapse\">"));
    Assert.assertTrue(outDocContents.contains(
            "<table cellspacing=\"0\" cellpadding=\"0\" style=\"margin-left:30.35pt; border:0.75pt solid #000000; -aw-border:0.5pt single; border-collapse:collapse\">"));
} else {
    Assert.assertTrue(outDocContents.contains(
            "<table cellspacing=\"0\" cellpadding=\"0\" style=\"border:0.75pt solid #000000; -aw-border:0.5pt single; border-collapse:collapse\">"));
    Assert.assertTrue(outDocContents.contains(
            "<table cellspacing=\"0\" cellpadding=\"0\" style=\"margin-left:30.35pt; border:0.75pt solid #000000; -aw-border:0.5pt single; border-collapse:collapse\">"));
}