186 lines
5.0 KiB
Java
186 lines
5.0 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @author Ilya S. Okomin
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* @version $Revision$
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*/
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package java.awt.font;
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import java.awt.Graphics2D;
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import java.awt.Image;
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import java.awt.geom.Rectangle2D;
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import org.apache.harmony.misc.HashCode;
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/**
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* The ImageGraphicAttribute class provides an opportunity to insert images to a
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* text.
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*
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* @since Android 1.0
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*/
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public final class ImageGraphicAttribute extends GraphicAttribute {
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// Image object rendered by this ImageGraphicAttribute
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/**
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* The image.
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*/
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private Image fImage;
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// X coordinate of the origin point
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/**
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* The origin x.
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*/
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private float fOriginX;
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// Y coordinate of the origin point
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/**
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* The origin y.
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*/
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private float fOriginY;
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// the width of the image object
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/**
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* The img width.
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*/
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private float fImgWidth;
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// the height of the image object
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/**
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* The img height.
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*/
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private float fImgHeight;
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/**
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* Instantiates a new ImageGraphicAttribute with the specified image,
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* alignment and origins.
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*
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* @param image
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* the Image to be rendered by ImageGraphicAttribute.
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* @param alignment
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* the alignment of the ImageGraphicAttribute.
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* @param originX
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* the origin X coordinate in the image of ImageGraphicAttribute.
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* @param originY
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* the origin Y coordinate in the image of ImageGraphicAttribute.
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*/
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public ImageGraphicAttribute(Image image, int alignment, float originX, float originY) {
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super(alignment);
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this.fImage = image;
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this.fOriginX = originX;
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this.fOriginY = originY;
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this.fImgWidth = fImage.getWidth(null);
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this.fImgHeight = fImage.getHeight(null);
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}
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/**
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* Instantiates a new ImageGraphicAttribute with the specified image and
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* alignment.
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*
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* @param image
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* the Image to be rendered by ImageGraphicAttribute.
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* @param alignment
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* the alignment of the ImageGraphicAttribute.
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*/
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public ImageGraphicAttribute(Image image, int alignment) {
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this(image, alignment, 0, 0);
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}
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/**
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* Returns a hash code of this ImageGraphicAttribute object.
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*
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* @return the hash code of this ImageGraphicAttribute object.
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*/
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@Override
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public int hashCode() {
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HashCode hash = new HashCode();
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hash.append(fImage.hashCode());
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hash.append(getAlignment());
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return hash.hashCode();
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}
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/**
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* Compares the specified ImageGraphicAttribute object with this
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* ImageGraphicAttribute object.
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*
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* @param iga
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* the ImageGraphicAttribute object to be compared.
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* @return true, if the specified ImageGraphicAttribute object is equal to
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* this ImageGraphicAttribute object, false otherwise.
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*/
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public boolean equals(ImageGraphicAttribute iga) {
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if (iga == null) {
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return false;
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}
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if (iga == this) {
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return true;
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}
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return (fOriginX == iga.fOriginX && fOriginY == iga.fOriginY
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&& getAlignment() == iga.getAlignment() && fImage.equals(iga.fImage));
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}
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/**
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* Compares the specified Object with this ImageGraphicAttribute object.
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*
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* @param obj
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* the Object to be compared.
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* @return true, if the specified Object is equal to this
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* ImageGraphicAttribute object, false otherwise.
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*/
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@Override
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public boolean equals(Object obj) {
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try {
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return equals((ImageGraphicAttribute)obj);
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} catch (ClassCastException e) {
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return false;
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}
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}
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@Override
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public void draw(Graphics2D g2, float x, float y) {
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g2.drawImage(fImage, (int)(x - fOriginX), (int)(y - fOriginY), null);
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}
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@Override
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public float getAdvance() {
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return Math.max(0, fImgWidth - fOriginX);
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}
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@Override
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public float getAscent() {
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return Math.max(0, fOriginY);
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}
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@Override
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public Rectangle2D getBounds() {
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return new Rectangle2D.Float(-fOriginX, -fOriginY, fImgWidth, fImgHeight);
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}
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@Override
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public float getDescent() {
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return Math.max(0, fImgHeight - fOriginY);
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}
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}
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