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https://github.com/haraldk/TwelveMonkeys.git
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Erlend Hamnaberg
83 lines
3.6 KiB
Java
Executable File
83 lines
3.6 KiB
Java
Executable File
/*
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* Copyright (c) 2008, Harald Kuhr
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name "TwelveMonkeys" nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package com.twelvemonkeys.image;
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import java.awt.*;
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/**
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* GraphicsUtil
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*
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* @author <a href="mailto:harald.kuhr@gmail.no">Harald Kuhr</a>
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* @author last modified by $Author: haku $
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* @version $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/image/GraphicsUtil.java#1 $
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*/
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public final class GraphicsUtil {
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/**
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* Enables anti-aliasing in the {@code Graphics} object.
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* <p/>
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* Anti-aliasing is enabled by casting to {@code Graphics2D} and setting
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* the rendering hint {@code RenderingHints.KEY_ANTIALIASING} to
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* {@code RenderingHints.VALUE_ANTIALIAS_ON}.
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*
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* @param pGraphics the graphics object
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* @throws ClassCastException if {@code pGraphics} is not an instance of
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* {@code Graphics2D}.
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*
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* @see java.awt.RenderingHints#KEY_ANTIALIASING
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*/
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public static void enableAA(final Graphics pGraphics) {
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((Graphics2D) pGraphics).setRenderingHint(
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RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON
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);
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}
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/**
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* Sets the alpha in the {@code Graphics} object.
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* <p/>
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* Alpha is set by casting to {@code Graphics2D} and setting the composite
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* to the rule {@code AlphaComposite.SRC_OVER} multiplied by the given
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* alpha.
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*
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* @param pGraphics the graphics object
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* @param pAlpha the alpha level, {@code alpha} must be a floating point
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* number in the inclusive range [0.0, 1.0].
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* @throws ClassCastException if {@code pGraphics} is not an instance of
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* {@code Graphics2D}.
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*
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* @see java.awt.AlphaComposite#SRC_OVER
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* @see java.awt.AlphaComposite#getInstance(int, float)
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*/
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public static void setAlpha(final Graphics pGraphics, final float pAlpha) {
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((Graphics2D) pGraphics).setComposite(
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AlphaComposite.getInstance(AlphaComposite.SRC_OVER, pAlpha)
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);
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}
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}
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