Add support of background-clip and background-origin

DEVSIX-2105

Autoported commit.
Original commit hash: [9ce424824]

Author: ar3em

itext.tests/itext.layout.tests/itext/layout/properties/BackgroundImageTest.cs

@@ -43,6 +43,7 @@ source product.
 using System;
 using System.Collections.Generic;
 using System.IO;
+using System.Reflection;
 using iText.IO.Image;
 using iText.IO.Util;
 using iText.Kernel.Colors;
@@ -82,6 +83,41 @@ public virtual void BackgroundImage() {
             BackgroundImageGenericTest("backgroundImage", backgroundImage);
         }
 
+        [NUnit.Framework.Test]
+        public virtual void CopyConstructorTest() {
+            PdfImageXObject xObject = new PdfImageXObject(ImageDataFactory.Create(SOURCE_FOLDER + "itis.jpg"));
+            iText.Layout.Properties.BackgroundImage image = new BackgroundImage.Builder().SetImage(xObject).Build();
+            FieldInfo[] imageFields = image.GetType().GetFields();
+            iText.Layout.Properties.BackgroundImage copyImage = new iText.Layout.Properties.BackgroundImage(image);
+            FieldInfo[] copyImageFields = copyImage.GetType().GetFields();
+            NUnit.Framework.Assert.AreEqual(imageFields.Length, copyImageFields.Length);
+            for (int i = 0; i < imageFields.Length; i++) {
+                FieldInfo imageField = imageFields[i];
+                FieldInfo copyImageField = copyImageFields[i];
+                NUnit.Framework.Assert.AreEqual(imageField, copyImageField);
+            }
+        }
+
+        [NUnit.Framework.Test]
+        public virtual void BackgroundImageClipOriginDefaultsTest() {
+            PdfImageXObject xObject = new PdfImageXObject(ImageDataFactory.Create(SOURCE_FOLDER + "itis.jpg"));
+            iText.Layout.Properties.BackgroundImage backgroundImage = new BackgroundImage.Builder().SetImage(xObject).
+                Build();
+            NUnit.Framework.Assert.AreEqual(BackgroundBox.BORDER_BOX, backgroundImage.GetBackgroundClip());
+            NUnit.Framework.Assert.AreEqual(BackgroundBox.PADDING_BOX, backgroundImage.GetBackgroundOrigin());
+            BackgroundImageGenericTest("backgroundImage", backgroundImage);
+        }
+
+        [NUnit.Framework.Test]
+        public virtual void BackgroundImageClipOriginTest() {
+            PdfImageXObject xObject = new PdfImageXObject(ImageDataFactory.Create(SOURCE_FOLDER + "itis.jpg"));
+            iText.Layout.Properties.BackgroundImage backgroundImage = new BackgroundImage.Builder().SetImage(xObject).
+                SetBackgroundClip(BackgroundBox.CONTENT_BOX).SetBackgroundOrigin(BackgroundBox.CONTENT_BOX).Build();
+            NUnit.Framework.Assert.AreEqual(BackgroundBox.CONTENT_BOX, backgroundImage.GetBackgroundClip());
+            NUnit.Framework.Assert.AreEqual(BackgroundBox.CONTENT_BOX, backgroundImage.GetBackgroundOrigin());
+            BackgroundImageGenericTest("backgroundImage", backgroundImage);
+        }
+
         [NUnit.Framework.Test]
         public virtual void BackgroundMultipleImagesTest() {
             IList<iText.Layout.Properties.BackgroundImage> images = JavaUtil.ArraysAsList(new BackgroundImage.Builder(

itext.tests/itext.layout.tests/itext/layout/properties/BackgroundUnitTest.cs

@@ -0,0 +1,41 @@
+/*
+This file is part of the iText (R) project.
+Copyright (c) 1998-2020 iText Group NV
+Authors: iText Software.
+
+This program is offered under a commercial and under the AGPL license.
+For commercial licensing, contact us at https://itextpdf.com/sales.  For AGPL licensing, see below.
+
+AGPL licensing:
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+using iText.Kernel.Colors;
+using iText.Test;
+
+namespace iText.Layout.Properties {
+    public class BackgroundUnitTest : ExtendedITextTest {
+        internal const float EPS = 0.00001f;
+
+        [NUnit.Framework.Test]
+        public virtual void BackgroundConstructorWithClipTest() {
+            DeviceRgb deviceRgbColor = new DeviceRgb();
+            float opacity = 10f;
+            BackgroundBox backgroundClip = BackgroundBox.BORDER_BOX;
+            Background background = new Background(deviceRgbColor, opacity, backgroundClip);
+            NUnit.Framework.Assert.AreEqual(deviceRgbColor, background.GetColor());
+            NUnit.Framework.Assert.AreEqual(opacity, background.GetOpacity(), EPS);
+            NUnit.Framework.Assert.AreEqual(backgroundClip, background.GetBackgroundClip());
+        }
+    }
+}