diff dwtx/jface/resource/RGBColorDescriptor.d @ 8:a3ff22a98bef

Dialog
author Frank Benoit <benoit@tionex.de>
date Sat, 29 Mar 2008 01:25:27 +0100
parents
children ea8ff534f622
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/jface/resource/RGBColorDescriptor.d	Sat Mar 29 01:25:27 2008 +0100
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+/*******************************************************************************
+ * Copyright (c) 2004, 2006 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:
+ *     IBM Corporation - initial API and implementation
+ * Port to the D programming language:
+ *     Frank Benoit <benoit@tionex.de>
+ *******************************************************************************/
+module dwtx.jface.resource.RGBColorDescriptor;
+
+import dwtx.jface.resource.ColorDescriptor;
+
+import dwt.graphics.Color;
+import dwt.graphics.Device;
+import dwt.graphics.RGB;
+
+import dwt.dwthelper.utils;
+
+/**
+ * Describes a color by its RGB values.
+ *
+ * @since 3.1
+ */
+class RGBColorDescriptor : ColorDescriptor {
+
+    private RGB color;
+
+    /**
+     * Color being copied, or null if none
+     */
+    private Color originalColor = null;
+
+    /**
+     * Creates a new RGBColorDescriptor given some RGB values
+     *
+     * @param color RGB values (not null)
+     */
+    public this(RGB color) {
+        this.color = color;
+    }
+
+    /**
+     * Creates a new RGBColorDescriptor that describes an existing color.
+     *
+     * @since 3.1
+     *
+     * @param originalColor a color to describe
+     */
+    public this(Color originalColor) {
+        this(originalColor.getRGB());
+        this.originalColor = originalColor;
+    }
+
+    /* (non-Javadoc)
+     * @see java.lang.Object#equals(java.lang.Object)
+     */
+    public override int opEquals(Object obj) {
+        if ( auto other = cast(RGBColorDescriptor)obj ) {
+            return other.color.opEquals(color) && other.originalColor is originalColor;
+        }
+
+        return false;
+    }
+
+    /* (non-Javadoc)
+     * @see java.lang.Object#hashCode()
+     */
+    public override hash_t toHash() {
+        return color.toHash();
+    }
+
+    /* (non-Javadoc)
+     * @see dwtx.jface.resources.ColorDescriptor#createColor()
+     */
+    public Color createColor(Device device) {
+        // If this descriptor is wrapping an existing color, then we can return the original color
+        // if this is the same device.
+        if (originalColor !is null) {
+            // If we're allocating on the same device as the original color, return the original.
+            if (originalColor.getDevice() is device) {
+                return originalColor;
+            }
+        }
+
+        return new Color(device, color);
+    }
+
+    /* (non-Javadoc)
+     * @see dwtx.jface.resource.ColorDescriptor#destroyColor(dwt.graphics.Color)
+     */
+    public void destroyColor(Color toDestroy) {
+        if (toDestroy is originalColor) {
+            return;
+        }
+
+        toDestroy.dispose();
+    }
+}