Fix an issue with processing tabs inside of a paragraph.

Move not only a renderer itself, but its children as well.

DEVSIX-1830

Author: ars18wrw

layout/src/main/java/com/itextpdf/layout/renderer/LineRenderer.java

@@ -415,11 +415,11 @@ public LayoutResult layout(LayoutContext layoutContext) {
                 tabRenderer.layout(new LayoutContext(new LayoutArea(layoutContext.getArea().getPageNumber(), bbox), wasParentsHeightClipped));
                 float sumOfAffectedRendererWidths = 0;
                 for (IRenderer renderer : affectedRenderers) {
-                    renderer.getOccupiedArea().getBBox().moveRight(tabWidth + sumOfAffectedRendererWidths);
+                    renderer.move(tabWidth + sumOfAffectedRendererWidths, 0);
                     sumOfAffectedRendererWidths += renderer.getOccupiedArea().getBBox().getWidth();
                 }
                 if (childResult.getSplitRenderer() != null) {
-                    childResult.getSplitRenderer().getOccupiedArea().getBBox().moveRight(tabWidth + sumOfAffectedRendererWidths - childResult.getSplitRenderer().getOccupiedArea().getBBox().getWidth());
+                    childResult.getSplitRenderer().move(tabWidth + sumOfAffectedRendererWidths - childResult.getSplitRenderer().getOccupiedArea().getBBox().getWidth(), 0);
                 }
 
                 float tabAndNextElemWidth = tabWidth + childResult.getOccupiedArea().getBBox().getWidth();

layout/src/test/java/com/itextpdf/layout/TabsTest.java

@@ -59,6 +59,7 @@ This file is part of the iText (R) project.
 import com.itextpdf.layout.element.Paragraph;
 import com.itextpdf.layout.element.Tab;
 import com.itextpdf.layout.element.TabStop;
+import com.itextpdf.layout.element.Table;
 import com.itextpdf.layout.element.Text;
 import com.itextpdf.layout.property.Property;
 import com.itextpdf.layout.property.TabAlignment;
@@ -273,6 +274,49 @@ public void anchorTabStopsTest02() throws IOException, InterruptedException {
         Assert.assertNull(new CompareTool().compareByContent(outFileName, cmpFileName, destinationFolder, "diff" + outFileName));
     }
 
+    @Test
+    public void tablesAndTabInsideOfParagraph() throws IOException, InterruptedException {
+        String testName = "tablesAndTabInsideOfParagraph.pdf";
+        String outFileName = destinationFolder + testName;
+        String cmpFileName = sourceFolder + "cmp_" + testName;
+
+        Document doc = initDocument(outFileName, false);
+
+
+        Table leftTable = new Table(1);
+        for(int x=0; x<3; x++){
+            leftTable.addCell("Table 1, Line " + (x + 1));
+        }
+        Table rightTable = new Table(1);
+        for(int x=0; x<3; x++){
+            rightTable.addCell("Table 2, Line " + (x + 1));
+        }
+
+        Paragraph p = new Paragraph().add(leftTable);
+        p.add(new Tab());
+        p.addTabStops(new TabStop(300, TabAlignment.LEFT));
+        p.add(rightTable);
+        doc.add(new Paragraph("TabAlignment: LEFT"));
+        doc.add(p);
+
+        p = new Paragraph().add(leftTable);
+        p.add(new Tab());
+        p.addTabStops(new TabStop(300, TabAlignment.CENTER));
+        p.add(rightTable);
+        doc.add(new Paragraph("TabAlignment: CENTER"));
+        doc.add(p);
+
+        p = new Paragraph().add(leftTable);
+        p.add(new Tab());
+        p.addTabStops(new TabStop(300, TabAlignment.RIGHT));
+        p.add(rightTable);
+        doc.add(new Paragraph("TabAlignment: RIGHT"));
+        doc.add(p);
+
+        doc.close();
+        Assert.assertNull(new CompareTool().compareByContent(outFileName, cmpFileName, destinationFolder, testName + "_diff"));
+    }
+
     @Test
     public void severalTabsInRowTest() throws IOException, InterruptedException {
         String fileName = "severalTabsInRowTest.pdf";