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/******************************************************************************* |
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* Copyright (c) 2013 IBM Corporation and others. |
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* All rights reserved. This program and the accompanying materials |
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* are made available under the terms of the Eclipse Public License v1.0 |
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* which accompanies this distribution, and is available at |
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* http://www.eclipse.org/legal/epl-v10.html |
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* |
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* Contributors: |
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* IBM Corporation - initial API and implementation |
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******************************************************************************/ |
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package org.eclipse.ui.internal.themes; |
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import java.util.Hashtable; |
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import org.eclipse.core.runtime.CoreException; |
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import org.eclipse.core.runtime.IConfigurationElement; |
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import org.eclipse.core.runtime.IExecutableExtension; |
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import org.eclipse.swt.graphics.RGB; |
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import org.eclipse.ui.themes.ColorUtil; |
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import org.eclipse.ui.themes.IColorFactory; |
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/** |
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* @since 4.2 |
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* |
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*/ |
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public class RGBBrightnessColorFactory implements IColorFactory, IExecutableExtension { |
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String color, scaleFactor; |
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/* (non-Javadoc) |
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* @see org.eclipse.ui.themes.IColorFactory#createColor() |
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*/ |
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public RGB createColor() { |
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RGB finalRGB = new RGB(0, 0, 0); |
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try { |
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if (color != null && scaleFactor != null) { |
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RGB rgb = ColorUtil.getColorValue(color); |
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float scale = Float.parseFloat(scaleFactor); |
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float[] hsb = rgb.getHSB(); |
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hsb[2] *= scale; |
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if (hsb[2] < 0) |
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hsb[2] = 0; |
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if (hsb[2] > 255) |
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hsb[2] = 255; |
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finalRGB = new RGB(hsb[0], hsb[1], hsb[2]); |
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} |
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} catch (NumberFormatException ex) { |
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} |
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return finalRGB; |
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} |
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/** |
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* This executable extension requires parameters to be explicitly declared |
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* via the second method described in the <code>IExecutableExtension</code> |
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* documentation. This class expects that there will be two parameters, |
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* <code>color</code> that describe the color to be blended (this values may |
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* either be RGB triples or SWT constants) and <code>scaleFactor</code> |
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* which is the brightness scale factor with 1.0 having the same brightness |
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* as the original color. |
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* |
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* @see org.eclipse.core.runtime.IExecutableExtension#setInitializationData(org.eclipse.core.runtime.IConfigurationElement, |
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* java.lang.String, java.lang.Object) |
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*/ |
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public void setInitializationData(IConfigurationElement config, String propertyName, Object data) |
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throws CoreException { |
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if (data instanceof Hashtable) { |
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Hashtable table = (Hashtable) data; |
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color = (String) table.get("color"); //$NON-NLS-1$ |
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scaleFactor = (String) table.get("scaleFactor"); //$NON-NLS-1$ |
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} |
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} |
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} |
