Initial Contribution
diff --git a/awt/javax/imageio/IIOParam.java b/awt/javax/imageio/IIOParam.java
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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * @author Rustem V. Rafikov
+ * @version $Revision: 1.3 $
+ */
+package javax.imageio;
+
+import java.awt.*;
+
+/**
+ * The IIOParam abstract class is superclass for
+ * ImageReadParam and ImageWriteParam classes and provides
+ * methods and variables which they share.
+ */
+public abstract class IIOParam {
+
+ /** The source region. */
+ protected Rectangle sourceRegion;
+
+ /** The source x subsampling. */
+ protected int sourceXSubsampling = 1;
+
+ /** The source y subsampling. */
+ protected int sourceYSubsampling = 1;
+
+ /** The subsampling x offset. */
+ protected int subsamplingXOffset;
+
+ /** The subsampling y offset. */
+ protected int subsamplingYOffset;
+
+ /** The source bands. */
+ protected int[] sourceBands;
+
+ /** The destination type. */
+ protected ImageTypeSpecifier destinationType;
+
+ /** The destination offset. */
+ protected Point destinationOffset = new Point(0, 0);
+
+ /** The default controller. */
+ protected IIOParamController defaultController;
+
+ /** The controller. */
+ protected IIOParamController controller;
+
+ /**
+ * Instantiates a new IIOParam.
+ */
+ protected IIOParam() {}
+
+ /**
+ * Sets the source region as a Rectangle object.
+ *
+ * @param sourceRegion the Rectangle which specifies the source region.
+ */
+ public void setSourceRegion(Rectangle sourceRegion) {
+ if (sourceRegion != null) {
+ if (sourceRegion.x < 0) {
+ throw new IllegalArgumentException("x < 0");
+ }
+ if (sourceRegion.y < 0) {
+ throw new IllegalArgumentException("y < 0");
+ }
+ if (sourceRegion.width <= 0) {
+ throw new IllegalArgumentException("width <= 0");
+ }
+ if (sourceRegion.height <= 0) {
+ throw new IllegalArgumentException("height <= 0");
+ }
+
+ if (sourceRegion.width <= subsamplingXOffset) {
+ throw new IllegalArgumentException("width <= subsamplingXOffset");
+ }
+
+ if (sourceRegion.height <= subsamplingYOffset) {
+ throw new IllegalArgumentException("height <= subsamplingXOffset");
+ }
+ //-- clone it to avoid unexpected modifications
+ this.sourceRegion = (Rectangle) sourceRegion.clone();
+ } else {
+ this.sourceRegion = null;
+ }
+ }
+
+ /**
+ * Gets the source region.
+ *
+ * @return the source region as Rectangle.
+ */
+ public Rectangle getSourceRegion() {
+ if (sourceRegion == null) {
+ return null;
+ }
+ //-- clone it to avoid unexpected modifications
+ return (Rectangle) sourceRegion.clone();
+ }
+
+ /**
+ * Sets the source subsampling. The sourceXSubsampling and
+ * sourceYSubsampling parameters specify the number of rows
+ * and columns to advance after every source pixel.
+ *
+ * @param sourceXSubsampling the source X subsampling.
+ * @param sourceYSubsampling the source Y subsampling.
+ * @param subsamplingXOffset the subsampling X offset.
+ * @param subsamplingYOffset the subsampling Y offset.
+ */
+ public void setSourceSubsampling(int sourceXSubsampling,
+ int sourceYSubsampling,
+ int subsamplingXOffset,
+ int subsamplingYOffset) {
+
+ if (sourceXSubsampling <= 0) {
+ throw new IllegalArgumentException("sourceXSubsampling <= 0");
+ }
+ if (sourceYSubsampling <= 0) {
+ throw new IllegalArgumentException("sourceYSubsampling <= 0");
+ }
+
+ if (subsamplingXOffset <= 0 || subsamplingXOffset >= sourceXSubsampling) {
+ throw new IllegalArgumentException("subsamplingXOffset is wrong");
+ }
+
+ if (subsamplingYOffset <= 0 || subsamplingYOffset >= sourceYSubsampling) {
+ throw new IllegalArgumentException("subsamplingYOffset is wrong");
+ }
+
+ //-- does region contain pixels
+ if (sourceRegion != null) {
+ if (sourceRegion.width <= subsamplingXOffset ||
+ sourceRegion.height <= subsamplingYOffset) {
+ throw new IllegalArgumentException("there are no pixels in region");
+ }
+ }
+
+ this.sourceXSubsampling = sourceXSubsampling;
+ this.sourceYSubsampling = sourceYSubsampling;
+ this.subsamplingXOffset = subsamplingXOffset;
+ this.subsamplingYOffset = subsamplingYOffset;
+ }
+
+ /**
+ * Gets the source X subsampling - the number of source
+ * columns to advance for each pixel.
+ *
+ * @return the source X subsampling.
+ */
+ public int getSourceXSubsampling() {
+ return sourceXSubsampling;
+ }
+
+ /**
+ * Gets the source Y subsampling - the number of source
+ * rows to advance for each pixel.
+ *
+ * @return the source Y subsampling.
+ */
+ public int getSourceYSubsampling() {
+ return sourceYSubsampling;
+ }
+
+ /**
+ * Gets the horizontal offset of the subsampling grid.
+ *
+ * @return the horizontal offset of the subsampling grid.
+ */
+ public int getSubsamplingXOffset() {
+ return subsamplingXOffset;
+ }
+
+ /**
+ * Gets the vertical offset of the subsampling grid.
+ *
+ * @return the vertical offset of the subsampling grid.
+ */
+ public int getSubsamplingYOffset() {
+ return subsamplingYOffset;
+ }
+
+ /**
+ * Sets the indices of the source bands.
+ *
+ * @param sourceBands the indices of the source bands.
+ */
+ public void setSourceBands(int[] sourceBands) {
+ // TODO implement
+ throw new UnsupportedOperationException("not implemented yet");
+ }
+
+ /**
+ * Gets the array of source bands.
+ *
+ * @return the array of source bands.
+ */
+ public int[] getSourceBands() {
+ // TODO implement
+ throw new UnsupportedOperationException("not implemented yet");
+ }
+
+ /**
+ * Sets the specified ImageTypeSpecifier for the destination image.
+ *
+ * @param destinationType the ImageTypeSpecifier.
+ */
+ public void setDestinationType(ImageTypeSpecifier destinationType) {
+ // TODO implement
+ throw new UnsupportedOperationException("not implemented yet");
+ }
+
+ /**
+ * Gets the type of the destination image as an ImageTypeSpecifier. .
+ *
+ * @return the ImageTypeSpecifier.
+ */
+ public ImageTypeSpecifier getDestinationType() {
+ // TODO implement
+ throw new UnsupportedOperationException("not implemented yet");
+ }
+
+ /**
+ * Sets the offset in the destination image where
+ * the decoded pixels are placed as a result of reading,
+ * or specified an area to be written while writing operation.
+ *
+ * @param destinationOffset the destination offset.
+ */
+ public void setDestinationOffset(Point destinationOffset) {
+ if (destinationOffset == null) {
+ throw new IllegalArgumentException("destinationOffset == null!");
+ }
+
+ this.destinationOffset = (Point) destinationOffset.clone();
+ }
+
+ /**
+ * Gets the offset in the destination image for placing pixels.
+ *
+ * @return the offset in the destination image.
+ */
+ public Point getDestinationOffset() {
+ return (Point) destinationOffset.clone();
+ }
+
+ /**
+ * Sets the IIOParamController to this IIOParam object for
+ * providing settings to this IIOParam.
+ *
+ * @param controller the new IIOParamController.
+ */
+ public void setController(IIOParamController controller) {
+ // TODO implement
+ throw new UnsupportedOperationException("not implemented yet");
+ }
+
+ /**
+ * Gets the current IIOParamController controller
+ * for this IIOParam.
+ *
+ * @return the current IIOParamController controller
+ * for this IIOParam.
+ */
+ public IIOParamController getController() {
+ // TODO implement
+ throw new UnsupportedOperationException("not implemented yet");
+ }
+
+ /**
+ * Gets the default IIOParamController controller
+ * for this IIOParam.
+ *
+ * @return the default IIOParamController controller
+ * for this IIOParam, or null.
+ */
+ public IIOParamController getDefaultController() {
+ // TODO implement
+ throw new UnsupportedOperationException("not implemented yet");
+ }
+
+ /**
+ * Returns true if IIOParamController is installed for
+ * this IIOParam.
+ *
+ * @return true if IIOParamController is installed for
+ * this IIOParam, false otherwise.
+ */
+ public boolean hasController() {
+ // TODO implement
+ throw new UnsupportedOperationException("not implemented yet");
+ }
+
+ /**
+ * Activates the controller.
+ *
+ * @return true, if successful, false otherwise.
+ */
+ public boolean activateController() {
+ // TODO implement
+ throw new UnsupportedOperationException("not implemented yet");
+ }
+}