Preserve cell's percent width between relayouts

DEVSIX-5158

Author: ars18wrw

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

@@ -554,7 +554,12 @@ public LayoutResult layout(LayoutContext layoutContext) {
                 }
 
                 LayoutResult cellResult = cell.setParent(this).layout(new LayoutContext(cellArea, null, childFloatRendererAreas, wasHeightClipped || wasParentsHeightClipped));
-
+                if (cellWidthProperty != null && cellWidthProperty.isPercentValue()) {
+                    cell.setProperty(Property.WIDTH, cellWidthProperty);
+                    if (null != cellResult.getOverflowRenderer()) {
+                        cellResult.getOverflowRenderer().setProperty(Property.WIDTH, cellWidthProperty);
+                    }
+                }
                 cell.setProperty(Property.VERTICAL_ALIGNMENT, verticalAlignment);
                 // width of BlockRenderer depends on child areas, while in cell case it is hardly define.
                 if (cellResult.getStatus() != LayoutResult.NOTHING) {

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

@@ -798,6 +798,28 @@ public void simpleTableTest23() throws IOException, InterruptedException {
         Assert.assertNull(new CompareTool().compareByContent(outFileName, cmpFileName, destinationFolder, testName + "_diff"));
     }
 
+    @Test
+    public void widthInPercentShouldBeResetAfterOverflow() throws IOException, InterruptedException {
+        String testName = "widthInPercentShouldBeResetAfterOverflow.pdf";
+        String outFileName = destinationFolder + testName;
+        String cmpFileName = sourceFolder + "cmp_" + testName;
+
+        PdfDocument pdfDoc = new PdfDocument(new PdfWriter(outFileName));
+        Document doc = new Document(pdfDoc);
+
+        doc.add(new Div().setHeight(730).setWidth(523));
+        Table table = new Table(2).useAllAvailableWidth().setFixedLayout()
+                .addCell(new Cell().add(new Paragraph("Hello")).setWidth(UnitValue.createPercentValue(20)))
+                .addCell(new Cell().add(new Paragraph("World")).setWidth(UnitValue.createPercentValue(80)));
+        // will be added on the first page
+        doc.add(table);
+
+        // will be added on the second page
+        doc.add(table);
+        doc.close();
+        Assert.assertNull(new CompareTool().compareByContent(outFileName, cmpFileName, destinationFolder, testName + "_diff"));
+    }
+
     @Test
     public void bigRowspanTest01() throws IOException, InterruptedException {
         String testName = "bigRowspanTest01.pdf";