Add GFPDMaskImage

validation-model/src/main/java/org/verapdf/gf/model/impl/pd/images/GFPDInlineImage.java

@@ -99,6 +99,7 @@ public List<? extends Object> getLinkedObjects(String link) {
 			case GFPDXImage.IMAGE_CS:
 				return this.getImageCS();
 			case GFPDXImage.S_MASK:
+			case GFPDXImage.MASK:
 			case GFPDXObject.OPI:
 			case GFPDXImage.ALTERNATES:
 			case GFPDXImage.JPX_STREAM:
@@ -154,4 +155,9 @@ private List<CosRenderingIntent> getIntent() {
 		}
 		return Collections.emptyList();
 	}
+
+	@Override
+	public Boolean getisMask() {
+		return false;
+	}
 }

validation-model/src/main/java/org/verapdf/gf/model/impl/pd/images/GFPDMaskImage.java

@@ -0,0 +1,59 @@
+/**
+ * This file is part of veraPDF Validation, a module of the veraPDF project.
+ * Copyright (c) 2015-2024, veraPDF Consortium <[email protected]>
+ * All rights reserved.
+ *
+ * veraPDF Validation is free software: you can redistribute it and/or modify
+ * it under the terms of either:
+ *
+ * The GNU General public license GPLv3+.
+ * You should have received a copy of the GNU General Public License
+ * along with veraPDF Validation as the LICENSE.GPL file in the root of the source
+ * tree.  If not, see http://www.gnu.org/licenses/ or
+ * https://www.gnu.org/licenses/gpl-3.0.en.html.
+ *
+ * The Mozilla Public License MPLv2+.
+ * You should have received a copy of the Mozilla Public License along with
+ * veraPDF Validation as the LICENSE.MPL file in the root of the source tree.
+ * If a copy of the MPL was not distributed with this file, you can obtain one at
+ * http://mozilla.org/MPL/2.0/.
+ */
+package org.verapdf.gf.model.impl.pd.images;
+
+import org.verapdf.gf.model.impl.pd.util.PDResourcesHandler;
+import org.verapdf.model.baselayer.Object;
+import org.verapdf.model.pdlayer.PDMaskImage;
+import org.verapdf.pd.images.PDXImage;
+
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * @author Maxim Plushchov
+ */
+public class GFPDMaskImage extends GFPDXImage implements PDMaskImage {
+
+	public static final String MASK_IMAGE_TYPE = "PDMaskImage";
+
+	public GFPDMaskImage(PDXImage simplePDObject, PDResourcesHandler resourcesHandler) {
+		super(simplePDObject, resourcesHandler, null, MASK_IMAGE_TYPE);
+	}
+
+	@Override
+	public List<? extends Object> getLinkedObjects(String link) {
+		switch (link) {
+			case INTENT:
+			case IMAGE_CS:
+			case MASK:
+				return Collections.emptyList();
+			default:
+				return super.getLinkedObjects(link);
+		}
+	}
+
+	@Override
+	public Boolean getisMask() {
+		return true;
+	}
+
+}

validation-model/src/main/java/org/verapdf/gf/model/impl/pd/images/GFPDSMaskImage.java

@@ -43,6 +43,9 @@ public GFPDSMaskImage(PDXImage simplePDObject, PDResourcesHandler resourcesHandl
 	public List<? extends Object> getLinkedObjects(String link) {
 		switch (link) {
 			case IMAGE_CS:
+			case MASK:
+			case S_MASK:
+			case ALTERNATES:
 				return Collections.emptyList();
 			default:
 				return super.getLinkedObjects(link);

validation-model/src/main/java/org/verapdf/gf/model/impl/pd/images/GFPDXImage.java

@@ -33,6 +33,7 @@
 import org.verapdf.model.coslayer.CosRenderingIntent;
 import org.verapdf.model.external.JPEG2000;
 import org.verapdf.model.pdlayer.PDColorSpace;
+import org.verapdf.model.pdlayer.PDMaskImage;
 import org.verapdf.model.pdlayer.PDSMaskImage;
 import org.verapdf.model.pdlayer.PDXImage;
 
@@ -51,6 +52,7 @@ public class GFPDXImage extends GFPDXObject implements PDXImage {
 	public static final String INTENT = "Intent";
 	public static final String JPX_STREAM = "jpxStream";
 	public static final String S_MASK = "SMask";
+	public static final String MASK = "Mask";
 
 	private List<JPEG2000> jpeg2000List = null;
 	private final org.verapdf.pd.colors.PDColorSpace inheritedFillCS;
@@ -81,6 +83,11 @@ public Long getBitsPerComponent() {
 		return ((org.verapdf.pd.images.PDXImage) simplePDObject).getBitsPerComponent();
 	}
 
+	@Override
+	public Boolean getisMask() {
+		return false;
+	}
+
 	@Override
 	public List<? extends Object> getLinkedObjects(String link) {
 		switch (link) {
@@ -94,6 +101,8 @@ public List<? extends Object> getLinkedObjects(String link) {
 				return this.getJPXStream();
 			case S_MASK:
 				return this.getSMask();
+			case MASK:
+				return this.getMask();
 			default:
 				return super.getLinkedObjects(link);
 		}
@@ -102,9 +111,19 @@ public List<? extends Object> getLinkedObjects(String link) {
 	protected List<PDSMaskImage> getSMask() {
 		org.verapdf.pd.images.PDXImage smask = ((org.verapdf.pd.images.PDXObject) simplePDObject).getSMask();
 		if (smask != null) {
-			List<PDSMaskImage> mask = new ArrayList<>(MAX_NUMBER_OF_ELEMENTS);
-			mask.add(new GFPDSMaskImage(smask, this.resourcesHandler));
-			return Collections.unmodifiableList(mask);
+			List<PDSMaskImage> smasks = new ArrayList<>(MAX_NUMBER_OF_ELEMENTS);
+			smasks.add(new GFPDSMaskImage(smask, this.resourcesHandler));
+			return Collections.unmodifiableList(smasks);
+		}
+		return Collections.emptyList();
+	}
+
+	protected List<PDMaskImage> getMask() {
+		org.verapdf.pd.images.PDXImage mask = ((org.verapdf.pd.images.PDXObject) simplePDObject).getMask();
+		if (mask != null) {
+			List<PDMaskImage> masks = new ArrayList<>(MAX_NUMBER_OF_ELEMENTS);
+			masks.add(new GFPDMaskImage(mask, this.resourcesHandler));
+			return Collections.unmodifiableList(masks);
 		}
 		return Collections.emptyList();
 	}