--- /dev/null
+/*******************************************************************************
+ * Copyright (c) 2000, 2011 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * Jesper Kamstrup Linnet (eclipse@kamstrup-linnet.dk) - initial API and implementation
+ * (report 36180: Callers/Callees view)
+ *******************************************************************************/
+package org.eclipse.jdt.internal.ui.callhierarchy;
+
+import org.eclipse.swt.graphics.ImageData;
+import org.eclipse.swt.graphics.Point;
+
+import org.eclipse.core.runtime.Assert;
+
+import org.eclipse.jface.resource.CompositeImageDescriptor;
+import org.eclipse.jface.resource.ImageDescriptor;
+
+import org.eclipse.jdt.internal.ui.JavaPlugin;
+import org.eclipse.jdt.internal.ui.JavaPluginImages;
+
+
+public class CallHierarchyImageDescriptor extends CompositeImageDescriptor {
+
+ /** Flag to render the recursive adornment */
+ public final static int RECURSIVE= 0x001;
+
+ /** Flag to render the callee adornment */
+ public final static int MAX_LEVEL= 0x002;
+
+ private ImageDescriptor fBaseImage;
+ private int fFlags;
+ private Point fSize;
+
+ /**
+ * Creates a new CallHierarchyImageDescriptor.
+ *
+ * @param baseImage an image descriptor used as the base image
+ * @param flags flags indicating which adornments are to be rendered. See <code>setAdornments</code>
+ * for valid values.
+ * @param size the size of the resulting image
+ * @see #setAdornments(int)
+ */
+ public CallHierarchyImageDescriptor(ImageDescriptor baseImage, int flags, Point size) {
+ fBaseImage= baseImage;
+ Assert.isNotNull(fBaseImage);
+ fFlags= flags;
+ Assert.isTrue(fFlags >= 0);
+ fSize= size;
+ Assert.isNotNull(fSize);
+ }
+
+ /**
+ * Sets the descriptors adornments. Valid values are: <code>RECURSIVE</code>, <code>CALLER</code>,
+ * <code>CALLEE</code>, <code>MAX_LEVEL</code>, or any combination of those.
+ *
+ * @param adornments the image descritpors adornments
+ */
+ public void setAdornments(int adornments) {
+ Assert.isTrue(adornments >= 0);
+ fFlags= adornments;
+ }
+
+ /**
+ * Returns the current adornments.
+ *
+ * @return the current adornments
+ */
+ public int getAdronments() {
+ return fFlags;
+ }
+
+ /**
+ * Sets the size of the image created by calling <code>createImage()</code>.
+ *
+ * @param size the size of the image returned from calling <code>createImage()</code>
+ * @see ImageDescriptor#createImage()
+ */
+ public void setImageSize(Point size) {
+ Assert.isNotNull(size);
+ Assert.isTrue(size.x >= 0 && size.y >= 0);
+ fSize= size;
+ }
+
+ /**
+ * Returns the size of the image created by calling <code>createImage()</code>.
+ *
+ * @return the size of the image created by calling <code>createImage()</code>
+ * @see ImageDescriptor#createImage()
+ */
+ public Point getImageSize() {
+ return new Point(fSize.x, fSize.y);
+ }
+
+ /* (non-Javadoc)
+ * Method declared in CompositeImageDescriptor
+ */
+ @Override
+ protected Point getSize() {
+ return fSize;
+ }
+
+ /* (non-Javadoc)
+ * Method declared on Object.
+ */
+ @Override
+ public boolean equals(Object object) {
+ if (object == null || !CallHierarchyImageDescriptor.class.equals(object.getClass()))
+ return false;
+
+ CallHierarchyImageDescriptor other= (CallHierarchyImageDescriptor)object;
+ return (fBaseImage.equals(other.fBaseImage) && fFlags == other.fFlags && fSize.equals(other.fSize));
+ }
+
+ /* (non-Javadoc)
+ * Method declared on Object.
+ */
+ @Override
+ public int hashCode() {
+ return fBaseImage.hashCode() | fFlags | fSize.hashCode();
+ }
+
+ /* (non-Javadoc)
+ * Method declared in CompositeImageDescriptor
+ */
+ @Override
+ protected void drawCompositeImage(int width, int height) {
+ ImageData bg= getImageData(fBaseImage);
+
+ drawImage(bg, 0, 0);
+ drawBottomLeft();
+ }
+
+ private ImageData getImageData(ImageDescriptor descriptor) {
+ ImageData data= descriptor.getImageData(); // see bug 51965: getImageData can return null
+ if (data == null) {
+ data= DEFAULT_IMAGE_DATA;
+ JavaPlugin.logErrorMessage("Image data not available: " + descriptor.toString()); //$NON-NLS-1$
+ }
+ return data;
+ }
+
+ private void drawBottomLeft() {
+ Point size= getSize();
+ int x= 0;
+ ImageData data= null;
+ if ((fFlags & RECURSIVE) != 0) {
+ data= getImageData(JavaPluginImages.DESC_OVR_RECURSIVE);
+ drawImage(data, x, size.y - data.height);
+ x+= data.width;
+ }
+ if ((fFlags & MAX_LEVEL) != 0) {
+ data= getImageData(JavaPluginImages.DESC_OVR_MAX_LEVEL);
+ drawImage(data, x, size.y - data.height);
+ x+= data.width;
+ }
+ }
+}