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