com.github.fritaly.graphml4j.ShapeStyle.java Source code

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Here is the source code for com.github.fritaly.graphml4j.ShapeStyle.java

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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.
 */
package com.github.fritaly.graphml4j;

import java.awt.Color;

import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;

import org.apache.commons.lang.Validate;

import com.github.fritaly.graphml4j.yed.Shape;

/**
 * An object defining the style properties in the "Shape" tab in yEd.
 *
 * @author francois_ritaly
 */
final class ShapeStyle {

    private Shape shape = Shape.ROUNDED_RECTANGLE;

    // This color is optional
    private Color shadowColor = Utils.decode("#B3A691");

    private int shadowOffsetX = 3, shadowOffsetY = 3;

    public ShapeStyle() {
    }

    public ShapeStyle(ShapeStyle style) {
        apply(style);
    }

    void apply(ShapeStyle object) {
        Validate.notNull(object, "The given shape object is null");

        this.shape = object.shape;
        this.shadowColor = object.shadowColor;
        this.shadowOffsetX = object.shadowOffsetX;
        this.shadowOffsetY = object.shadowOffsetY;
    }

    public Shape getShape() {
        return shape;
    }

    public void setShape(Shape shape) {
        Validate.notNull(shape, "The given shape is null");

        this.shape = shape;
    }

    public Color getShadowColor() {
        return shadowColor;
    }

    public int getShadowOffsetX() {
        return shadowOffsetX;
    }

    public int getShadowOffsetY() {
        return shadowOffsetY;
    }

    public void setShadowColor(Color color) {
        // This color is optional
        this.shadowColor = color;
    }

    public void setShadowOffsetX(int value) {
        this.shadowOffsetX = value;
    }

    public void setShadowOffsetY(int value) {
        this.shadowOffsetY = value;
    }

    void writeTo(XMLStreamWriter writer) throws XMLStreamException {
        Validate.notNull(writer, "The given stream writer is null");

        writeShape(writer);
        writeDropShadow(writer);
    }

    private void writeShape(XMLStreamWriter writer) throws XMLStreamException {
        Validate.notNull(writer, "The given stream writer is null");

        // y:Shape
        writer.writeEmptyElement("y:Shape");
        writer.writeAttribute("type", shape.getValue());
    }

    private void writeDropShadow(XMLStreamWriter writer) throws XMLStreamException {
        Validate.notNull(writer, "The given stream writer is null");

        if ((shadowColor == null) || ((shadowOffsetX == 0) && (shadowOffsetY == 0))) {
            // Nothing to render
            return;
        }

        // y:DropShadow
        writer.writeEmptyElement("y:DropShadow");
        writer.writeAttribute("color", Utils.encode(shadowColor));
        writer.writeAttribute("offsetX", Integer.toString(shadowOffsetX));
        writer.writeAttribute("offsetY", Integer.toString(shadowOffsetY));
    }
}