org.apache.batik.dom.svg.AbstractSVGTransform Maven / Gradle / Ivy
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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
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http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
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See the License for the specific language governing permissions and
limitations under the License.
*/
package org.apache.batik.dom.svg;
import java.awt.geom.AffineTransform;
import org.w3c.dom.svg.SVGMatrix;
import org.w3c.dom.svg.SVGTransform;
/**
* Abstract implementation of {@link SVGTransform}.
*
* @author [email protected]
* @version $Id: AbstractSVGTransform.java 1664314 2015-03-05 11:45:15Z lbernardo $
*/
public abstract class AbstractSVGTransform implements SVGTransform {
/**
* Type of the transformation. Before any values are set, the type
* is unknown.
*/
protected short type = SVG_TRANSFORM_UNKNOWN;
/**
* The transformation as a Java2D {link AffineTransform}.
*/
protected AffineTransform affineTransform;
/**
* The angle of the transformation, if this transformation is a rotation
* or a skew. This is stored to avoid extracting the angle from the
* transformation matrix.
*/
protected float angle;
/**
* The x coordinate of the center of the rotation, if this transformation
* is a rotation.
*/
protected float x;
/**
* The y coordinate of the center of the rotation, if this transformation
* is a rotation.
*/
protected float y;
/**
* Creates and returns a new {@link SVGMatrix} for exposing the
* transformation as a matrix.
* @return SVGMatrix representing the transformation
*/
protected abstract SVGMatrix createMatrix();
/**
* Sets the type of transformation.
*/
public void setType(short type) {
this.type = type;
}
/**
* Returns the x coordinate of the center of the rotation, if this
* transformation is a rotation.
*/
public float getX() {
return x;
}
/**
* Returns the y coordinate of the center of the rotation, if this
* transformation is a rotation.
*/
public float getY() {
return y;
}
/**
* Copies the value of the specified transformation into this object.
*/
public void assign(AbstractSVGTransform t) {
this.type = t.type;
this.affineTransform = t.affineTransform;
this.angle = t.angle;
this.x = t.x;
this.y = t.y;
}
/**
* DOM: Implements {@link SVGTransform#getType()}.
*/
public short getType() {
return type;
}
/**
* DOM: Implements {@link SVGTransform#getMatrix()}.
*/
public SVGMatrix getMatrix() {
return createMatrix();
}
/**
* DOM: Implements {@link SVGTransform#getAngle()}.
*/
public float getAngle() {
return angle;
}
/**
* DOM: Implements {@link SVGTransform#setMatrix(SVGMatrix)}.
*/
public void setMatrix(SVGMatrix matrix) {
type = SVG_TRANSFORM_MATRIX;
affineTransform =
new AffineTransform(matrix.getA(), matrix.getB(), matrix.getC(),
matrix.getD(), matrix.getE(), matrix.getF());
}
/**
* DOM: Implements {@link SVGTransform#setTranslate(float,float)}.
*/
public void setTranslate(float tx, float ty) {
type = SVG_TRANSFORM_TRANSLATE;
affineTransform = AffineTransform.getTranslateInstance(tx, ty);
}
/**
* DOM: Implements {@link SVGTransform#setScale(float,float)}.
*/
public void setScale(float sx, float sy) {
type = SVG_TRANSFORM_SCALE;
affineTransform = AffineTransform.getScaleInstance(sx, sy);
}
/**
* DOM: Implements {@link SVGTransform#setRotate(float,float,float)}.
*/
public void setRotate(float angle, float cx, float cy) {
type = SVG_TRANSFORM_ROTATE;
affineTransform =
AffineTransform.getRotateInstance(Math.toRadians(angle), cx, cy);
this.angle = angle;
this.x = cx;
this.y = cy;
}
/**
* DOM: Implements {@link SVGTransform#setSkewX(float)}.
*/
public void setSkewX(float angle) {
type = SVG_TRANSFORM_SKEWX;
affineTransform =
AffineTransform.getShearInstance(Math.tan(Math.toRadians(angle)),
0.0);
this.angle = angle;
}
/**
* DOM: Implements {@link SVGTransform#setSkewY(float)}.
*/
public void setSkewY(float angle) {
type = SVG_TRANSFORM_SKEWY;
affineTransform =
AffineTransform.getShearInstance(0.0,
Math.tan(Math.toRadians(angle)));
this.angle = angle;
}
}