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/* Licensed 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 org.activiti.image;

import java.awt.image.BufferedImage;
import java.io.InputStream;
import java.util.List;

import org.activiti.bpmn.model.BpmnModel;

/**
 * This interface declares methods to generate process diagram
 *
 * @author martin.grofcik
 * @author Tijs Rademakers
 */
public interface ProcessDiagramGenerator {
  
  /**
   * Generates a diagram of the given process definition, using the
   * diagram interchange information of the process.
   * @param bpmnModel bpmn model to get diagram for
   * @param imageType type of the image to generate.
   * @param highLightedActivities activities to highlight
   * @param highLightedFlows flows to highlight
   * @param activityFontName override the default activity font
   * @param labelFontName override the default label font
   * @param customClassLoader provide a custom classloader for retrieving icon images
   */
  public InputStream generateDiagram(BpmnModel bpmnModel, String imageType, List highLightedActivities, List highLightedFlows, 
      String activityFontName, String labelFontName, ClassLoader customClassLoader, double scaleFactor);
  
  /**
   * Generates a diagram of the given process definition, using the
   * diagram interchange information of the process.
   * @param bpmnModel bpmn model to get diagram for
   * @param imageType type of the image to generate.
   * @param highLightedActivities activities to highlight
   * @param highLightedFlows flows to highlight
   */
  public InputStream generateDiagram(BpmnModel bpmnModel, String imageType, List highLightedActivities, List highLightedFlows);
  
  public InputStream generateDiagram(BpmnModel bpmnModel, String imageType, List highLightedActivities, 
      List highLightedFlows, double scaleFactor);

  public InputStream generateDiagram(BpmnModel bpmnModel, String imageType, List highLightedActivities);
  
  public InputStream generateDiagram(BpmnModel bpmnModel, String imageType, List highLightedActivities, double scaleFactor);
  
  public InputStream generateDiagram(BpmnModel bpmnModel, String imageType, String activityFontName, String labelFontName, ClassLoader customClassLoader);
  
  public InputStream generateDiagram(BpmnModel bpmnModel, String imageType, String activityFontName, 
      String labelFontName, ClassLoader customClassLoader, double scaleFactor);

  public InputStream generatePngDiagram(BpmnModel bpmnModel);
  
  public InputStream generatePngDiagram(BpmnModel bpmnModel, double scaleFactor);

  public InputStream generateJpgDiagram(BpmnModel bpmnModel);
  
  public InputStream generateJpgDiagram(BpmnModel bpmnModel, double scaleFactor);
  
  public BufferedImage generatePngImage(BpmnModel bpmnModel, double scaleFactor);

}