/* 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.impl;
import java.awt.image.BufferedImage;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.activiti.bpmn.model.Activity;
import org.activiti.bpmn.model.Artifact;
import org.activiti.bpmn.model.Association;
import org.activiti.bpmn.model.AssociationDirection;
import org.activiti.bpmn.model.BaseElement;
import org.activiti.bpmn.model.BoundaryEvent;
import org.activiti.bpmn.model.BpmnModel;
import org.activiti.bpmn.model.BusinessRuleTask;
import org.activiti.bpmn.model.CallActivity;
import org.activiti.bpmn.model.EndEvent;
import org.activiti.bpmn.model.ErrorEventDefinition;
import org.activiti.bpmn.model.Event;
import org.activiti.bpmn.model.EventDefinition;
import org.activiti.bpmn.model.EventGateway;
import org.activiti.bpmn.model.EventSubProcess;
import org.activiti.bpmn.model.ExclusiveGateway;
import org.activiti.bpmn.model.FlowElement;
import org.activiti.bpmn.model.FlowElementsContainer;
import org.activiti.bpmn.model.FlowNode;
import org.activiti.bpmn.model.Gateway;
import org.activiti.bpmn.model.GraphicInfo;
import org.activiti.bpmn.model.InclusiveGateway;
import org.activiti.bpmn.model.IntermediateCatchEvent;
import org.activiti.bpmn.model.Lane;
import org.activiti.bpmn.model.ManualTask;
import org.activiti.bpmn.model.MultiInstanceLoopCharacteristics;
import org.activiti.bpmn.model.ParallelGateway;
import org.activiti.bpmn.model.Pool;
import org.activiti.bpmn.model.Process;
import org.activiti.bpmn.model.ReceiveTask;
import org.activiti.bpmn.model.ScriptTask;
import org.activiti.bpmn.model.SendTask;
import org.activiti.bpmn.model.SequenceFlow;
import org.activiti.bpmn.model.ServiceTask;
import org.activiti.bpmn.model.SignalEventDefinition;
import org.activiti.bpmn.model.StartEvent;
import org.activiti.bpmn.model.SubProcess;
import org.activiti.bpmn.model.Task;
import org.activiti.bpmn.model.TextAnnotation;
import org.activiti.bpmn.model.ThrowEvent;
import org.activiti.bpmn.model.TimerEventDefinition;
import org.activiti.bpmn.model.UserTask;
import org.activiti.image.ProcessDiagramGenerator;
/**
* Class to generate an image based the diagram interchange information in a
* BPMN 2.0 process.
*
* @author Joram Barrez
* @author Tijs Rademakers
*/
public class DefaultProcessDiagramGenerator implements ProcessDiagramGenerator {
protected final Map<Class<? extends BaseElement>, ActivityDrawInstruction> activityDrawInstructions = new HashMap<Class<? extends BaseElement>, ActivityDrawInstruction>();
protected final Map<Class<? extends BaseElement>, ArtifactDrawInstruction> artifactDrawInstructions = new HashMap<Class<? extends BaseElement>, ArtifactDrawInstruction>();
public DefaultProcessDiagramGenerator() {
this(1.0);
}
// The instructions on how to draw a certain construct is
// created statically and stored in a map for performance.
public DefaultProcessDiagramGenerator(final double scaleFactor) {
// start event
activityDrawInstructions.put(StartEvent.class, new ActivityDrawInstruction() {
public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
StartEvent startEvent = (StartEvent) flowNode;
if (startEvent.getEventDefinitions() != null && !startEvent.getEventDefinitions().isEmpty()) {
EventDefinition eventDefinition = startEvent.getEventDefinitions().get(0);
if (eventDefinition instanceof TimerEventDefinition) {
processDiagramCanvas.drawTimerStartEvent(graphicInfo, scaleFactor);
} else if (eventDefinition instanceof ErrorEventDefinition) {
processDiagramCanvas.drawErrorStartEvent(graphicInfo, scaleFactor);
} else if (eventDefinition instanceof SignalEventDefinition) {
processDiagramCanvas.drawSignalStartEvent(graphicInfo, scaleFactor);
}
} else {
processDiagramCanvas.drawNoneStartEvent(graphicInfo);
}
}
});
// signal catch
activityDrawInstructions.put(IntermediateCatchEvent.class, new ActivityDrawInstruction() {
public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
IntermediateCatchEvent intermediateCatchEvent = (IntermediateCatchEvent) flowNode;
if (intermediateCatchEvent.getEventDefinitions() != null && !intermediateCatchEvent.getEventDefinitions()
.isEmpty()) {
if (intermediateCatchEvent.getEventDefinitions().get(0) instanceof SignalEventDefinition) {
processDiagramCanvas.drawCatchingSignalEvent(flowNode.getName(), graphicInfo, true, scaleFactor);
} else if (intermediateCatchEvent.getEventDefinitions().get(0) instanceof TimerEventDefinition) {
processDiagramCanvas.drawCatchingTimerEvent(flowNode.getName(), graphicInfo, true, scaleFactor);
}
}
}
});
// signal throw
activityDrawInstructions.put(ThrowEvent.class, new ActivityDrawInstruction() {
public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
ThrowEvent throwEvent = (ThrowEvent) flowNode;
if (throwEvent.getEventDefinitions() != null && !throwEvent.getEventDefinitions().isEmpty()) {
if (throwEvent.getEventDefinitions().get(0) instanceof SignalEventDefinition) {
processDiagramCanvas.drawThrowingSignalEvent(graphicInfo, scaleFactor);
}
} else {
processDiagramCanvas.drawThrowingNoneEvent(graphicInfo, scaleFactor);
}
}
});
// end event
activityDrawInstructions.put(EndEvent.class, new ActivityDrawInstruction() {
public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
EndEvent endEvent = (EndEvent) flowNode;
if (endEvent.getEventDefinitions() != null && !endEvent.getEventDefinitions().isEmpty()) {
if (endEvent.getEventDefinitions().get(0) instanceof ErrorEventDefinition) {
processDiagramCanvas.drawErrorEndEvent(flowNode.getName(), graphicInfo, scaleFactor);
}
} else {
processDiagramCanvas.drawNoneEndEvent(graphicInfo, scaleFactor);
}
}
});
// task
activityDrawInstructions.put(Task.class, new ActivityDrawInstruction() {
public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawTask(flowNode.getName(), graphicInfo);
}
});
// user task
activityDrawInstructions.put(UserTask.class, new ActivityDrawInstruction() {
public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawUserTask(flowNode.getName(), graphicInfo, scaleFactor);
}
});
// script task
activityDrawInstructions.put(ScriptTask.class, new ActivityDrawInstruction() {
public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawScriptTask(flowNode.getName(), graphicInfo, scaleFactor);
}
});
// service task
activityDrawInstructions.put(ServiceTask.class, new ActivityDrawInstruction() {
public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
ServiceTask serviceTask = (ServiceTask) flowNode;
if ("camel".equalsIgnoreCase(serviceTask.getType())) {
processDiagramCanvas.drawCamelTask(serviceTask.getName(), graphicInfo, scaleFactor);
} else if ("mule".equalsIgnoreCase(serviceTask.getType())) {
processDiagramCanvas.drawMuleTask(serviceTask.getName(), graphicInfo, scaleFactor);
} else {
processDiagramCanvas.drawServiceTask(serviceTask.getName(), graphicInfo, scaleFactor);
}
}
});
// receive task
activityDrawInstructions.put(ReceiveTask.class, new ActivityDrawInstruction() {
public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawReceiveTask(flowNode.getName(), graphicInfo, scaleFactor);
}
});
// send task
activityDrawInstructions.put(SendTask.class, new ActivityDrawInstruction() {
public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawSendTask(flowNode.getName(), graphicInfo, scaleFactor);
}
});
// manual task
activityDrawInstructions.put(ManualTask.class, new ActivityDrawInstruction() {
public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawManualTask(flowNode.getName(), graphicInfo, scaleFactor);
}
});
// businessRuleTask task
activityDrawInstructions.put(BusinessRuleTask.class, new ActivityDrawInstruction() {
public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawBusinessRuleTask(flowNode.getName(), graphicInfo, scaleFactor);
}
});
// exclusive gateway
activityDrawInstructions.put(ExclusiveGateway.class, new ActivityDrawInstruction() {
public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawExclusiveGateway(graphicInfo, scaleFactor);
}
});
// inclusive gateway
activityDrawInstructions.put(InclusiveGateway.class, new ActivityDrawInstruction() {
public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawInclusiveGateway(graphicInfo, scaleFactor);
}
});
// parallel gateway
activityDrawInstructions.put(ParallelGateway.class, new ActivityDrawInstruction() {
public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawParallelGateway(graphicInfo, scaleFactor);
}
});
// event based gateway
activityDrawInstructions.put(EventGateway.class, new ActivityDrawInstruction() {
public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawEventBasedGateway(graphicInfo, scaleFactor);
}
});
// Boundary timer
activityDrawInstructions.put(BoundaryEvent.class, new ActivityDrawInstruction() {
public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
BoundaryEvent boundaryEvent = (BoundaryEvent) flowNode;
if (boundaryEvent.getEventDefinitions() != null && !boundaryEvent.getEventDefinitions().isEmpty()) {
if (boundaryEvent.getEventDefinitions().get(0) instanceof TimerEventDefinition) {
processDiagramCanvas.drawCatchingTimerEvent(flowNode.getName(), graphicInfo, boundaryEvent.isCancelActivity(), scaleFactor);
} else if (boundaryEvent.getEventDefinitions().get(0) instanceof ErrorEventDefinition) {
processDiagramCanvas.drawCatchingErrorEvent(graphicInfo, boundaryEvent.isCancelActivity(), scaleFactor);
} else if (boundaryEvent.getEventDefinitions().get(0) instanceof SignalEventDefinition) {
processDiagramCanvas.drawCatchingSignalEvent(flowNode.getName(), graphicInfo, boundaryEvent.isCancelActivity(), scaleFactor);
}
}
}
});
// subprocess
activityDrawInstructions.put(SubProcess.class, new ActivityDrawInstruction() {
public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
if (graphicInfo.getExpanded() != null && !graphicInfo.getExpanded()) {
processDiagramCanvas.drawCollapsedSubProcess(flowNode.getName(), graphicInfo, false);
} else {
processDiagramCanvas.drawExpandedSubProcess(flowNode.getName(), graphicInfo, false, scaleFactor);
}
}
});
// Event subprocess
activityDrawInstructions.put(EventSubProcess.class, new ActivityDrawInstruction() {
public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
if (graphicInfo.getExpanded() != null && !graphicInfo.getExpanded()) {
processDiagramCanvas.drawCollapsedSubProcess(flowNode.getName(), graphicInfo, true);
} else {
processDiagramCanvas.drawExpandedSubProcess(flowNode.getName(), graphicInfo, true, scaleFactor);
}
}
});
// call activity
activityDrawInstructions.put(CallActivity.class, new ActivityDrawInstruction() {
public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawCollapsedCallActivity(flowNode.getName(), graphicInfo);
}
});
// text annotation
artifactDrawInstructions.put(TextAnnotation.class, new ArtifactDrawInstruction() {
public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, Artifact artifact) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(artifact.getId());
TextAnnotation textAnnotation = (TextAnnotation) artifact;
processDiagramCanvas.drawTextAnnotation(textAnnotation.getText(), graphicInfo);
}
});
// association
artifactDrawInstructions.put(Association.class, new ArtifactDrawInstruction() {
public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, Artifact artifact) {
Association association = (Association) artifact;
String sourceRef = association.getSourceRef();
String targetRef = association.getTargetRef();
// source and target can be instance of FlowElement or Artifact
BaseElement sourceElement = bpmnModel.getFlowElement(sourceRef);
BaseElement targetElement = bpmnModel.getFlowElement(targetRef);
if (sourceElement == null) {
sourceElement = bpmnModel.getArtifact(sourceRef);
}
if (targetElement == null) {
targetElement = bpmnModel.getArtifact(targetRef);
}
List<GraphicInfo> graphicInfoList = bpmnModel.getFlowLocationGraphicInfo(artifact.getId());
graphicInfoList = connectionPerfectionizer(processDiagramCanvas, bpmnModel, sourceElement, targetElement, graphicInfoList);
int xPoints[]= new int[graphicInfoList.size()];
int yPoints[]= new int[graphicInfoList.size()];
for (int i=1; i<graphicInfoList.size(); i++) {
GraphicInfo graphicInfo = graphicInfoList.get(i);
GraphicInfo previousGraphicInfo = graphicInfoList.get(i-1);
if (i == 1) {
xPoints[0] = (int) previousGraphicInfo.getX();
yPoints[0] = (int) previousGraphicInfo.getY();
}
xPoints[i] = (int) graphicInfo.getX();
yPoints[i] = (int) graphicInfo.getY();
}
AssociationDirection associationDirection = association.getAssociationDirection();
processDiagramCanvas.drawAssociation(xPoints, yPoints, associationDirection, false, scaleFactor);
}
});
}
public InputStream generateDiagram(BpmnModel bpmnModel, String imageType, List<String> highLightedActivities, List<String> highLightedFlows,
String activityFontName, String labelFontName, ClassLoader customClassLoader, double scaleFactor) {
return generateProcessDiagram(bpmnModel, imageType, highLightedActivities, highLightedFlows,
activityFontName, labelFontName, customClassLoader, scaleFactor).generateImage(imageType);
}
public InputStream generateDiagram(BpmnModel bpmnModel, String imageType, List<String> highLightedActivities, List<String> highLightedFlows) {
return generateDiagram(bpmnModel, imageType, highLightedActivities, highLightedFlows, null, null, null, 1.0);
}
public InputStream generateDiagram(BpmnModel bpmnModel, String imageType,
List<String> highLightedActivities, List<String> highLightedFlows, double scaleFactor) {
return generateDiagram(bpmnModel, imageType, highLightedActivities, highLightedFlows, null, null, null, scaleFactor);
}
public InputStream generateDiagram(BpmnModel bpmnModel, String imageType, List<String> highLightedActivities) {
return generateDiagram(bpmnModel, imageType, highLightedActivities, Collections.<String>emptyList());
}
public InputStream generateDiagram(BpmnModel bpmnModel, String imageType, List<String> highLightedActivities, double scaleFactor) {
return generateDiagram(bpmnModel, imageType, highLightedActivities, Collections.<String>emptyList(), scaleFactor);
}
public InputStream generateDiagram(BpmnModel bpmnModel, String imageType, String activityFontName, String labelFontName, ClassLoader customClassLoader) {
return generateDiagram(bpmnModel, imageType, Collections.<String>emptyList(), Collections.<String>emptyList(),
activityFontName, labelFontName, customClassLoader, 1.0);
}
public InputStream generateDiagram(BpmnModel bpmnModel, String imageType, String activityFontName,
String labelFontName, ClassLoader customClassLoader, double scaleFactor) {
return generateDiagram(bpmnModel, imageType, Collections.<String>emptyList(), Collections.<String>emptyList(),
activityFontName, labelFontName, customClassLoader, scaleFactor);
}
public InputStream generatePngDiagram(BpmnModel bpmnModel) {
return generatePngDiagram(bpmnModel, 1.0);
}
public InputStream generatePngDiagram(BpmnModel bpmnModel, double scaleFactor) {
return generateDiagram(bpmnModel, "png", Collections.<String>emptyList(), Collections.<String>emptyList(), scaleFactor);
}
public InputStream generateJpgDiagram(BpmnModel bpmnModel) {
return generateJpgDiagram(bpmnModel, 1.0);
}
public InputStream generateJpgDiagram(BpmnModel bpmnModel, double scaleFactor) {
return generateDiagram(bpmnModel, "jpg", Collections.<String>emptyList(), Collections.<String>emptyList());
}
public BufferedImage generateImage(BpmnModel bpmnModel, String imageType, List<String> highLightedActivities, List<String> highLightedFlows,
String activityFontName, String labelFontName, ClassLoader customClassLoader, double scaleFactor) {
return generateProcessDiagram(bpmnModel, imageType, highLightedActivities, highLightedFlows,
activityFontName, labelFontName, customClassLoader, scaleFactor).generateBufferedImage(imageType);
}
public BufferedImage generateImage(BpmnModel bpmnModel, String imageType,
List<String> highLightedActivities, List<String> highLightedFlows, double scaleFactor) {
return generateImage(bpmnModel, imageType, highLightedActivities, highLightedFlows, null, null, null, scaleFactor);
}
public BufferedImage generatePngImage(BpmnModel bpmnModel, double scaleFactor) {
return generateImage(bpmnModel, "png", Collections.<String>emptyList(), Collections.<String>emptyList(), scaleFactor);
}
protected DefaultProcessDiagramCanvas generateProcessDiagram(BpmnModel bpmnModel, String imageType,
List<String> highLightedActivities, List<String> highLightedFlows,
String activityFontName, String labelFontName, ClassLoader customClassLoader, double scaleFactor) {
DefaultProcessDiagramCanvas processDiagramCanvas = initProcessDiagramCanvas(bpmnModel, imageType, activityFontName, labelFontName, customClassLoader);
// Draw pool shape, if process is participant in collaboration
for (Pool pool : bpmnModel.getPools()) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(pool.getId());
processDiagramCanvas.drawPoolOrLane(pool.getName(), graphicInfo);
}
// Draw lanes
for (Process process : bpmnModel.getProcesses()) {
for (Lane lane : process.getLanes()) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(lane.getId());
processDiagramCanvas.drawPoolOrLane(lane.getName(), graphicInfo);
}
}
// Draw activities and their sequence-flows
for (FlowNode flowNode : bpmnModel.getProcesses().get(0).findFlowElementsOfType(FlowNode.class)) {
drawActivity(processDiagramCanvas, bpmnModel, flowNode, highLightedActivities, highLightedFlows, scaleFactor);
}
// Draw artifacts
for (Process process : bpmnModel.getProcesses()) {
for (Artifact artifact : process.getArtifacts()) {
drawArtifact(processDiagramCanvas, bpmnModel, artifact);
}
}
return processDiagramCanvas;
}
protected void drawActivity(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel,
FlowNode flowNode, List<String> highLightedActivities, List<String> highLightedFlows, double scaleFactor) {
ActivityDrawInstruction drawInstruction = activityDrawInstructions.get(flowNode.getClass());
if (drawInstruction != null) {
drawInstruction.draw(processDiagramCanvas, bpmnModel, flowNode);
// Gather info on the multi instance marker
boolean multiInstanceSequential = false, multiInstanceParallel = false, collapsed = false;
if (flowNode instanceof Activity) {
Activity activity = (Activity) flowNode;
MultiInstanceLoopCharacteristics multiInstanceLoopCharacteristics = activity.getLoopCharacteristics();
if (multiInstanceLoopCharacteristics != null) {
multiInstanceSequential = multiInstanceLoopCharacteristics.isSequential();
multiInstanceParallel = !multiInstanceSequential;
}
}
// Gather info on the collapsed marker
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
if (flowNode instanceof SubProcess) {
collapsed = graphicInfo.getExpanded() != null && !graphicInfo.getExpanded();
} else if (flowNode instanceof CallActivity) {
collapsed = true;
}
if (scaleFactor == 1.0) {
// Actually draw the markers
processDiagramCanvas.drawActivityMarkers((int) graphicInfo.getX(), (int) graphicInfo.getY(),(int) graphicInfo.getWidth(), (int) graphicInfo.getHeight(),
multiInstanceSequential, multiInstanceParallel, collapsed);
}
// Draw highlighted activities
if (highLightedActivities.contains(flowNode.getId())) {
drawHighLight(processDiagramCanvas, bpmnModel.getGraphicInfo(flowNode.getId()));
}
}
// Outgoing transitions of activity
for (SequenceFlow sequenceFlow : flowNode.getOutgoingFlows()) {
boolean highLighted = (highLightedFlows.contains(sequenceFlow.getId()));
String defaultFlow = null;
if (flowNode instanceof Activity) {
defaultFlow = ((Activity) flowNode).getDefaultFlow();
} else if (flowNode instanceof Gateway) {
defaultFlow = ((Gateway) flowNode).getDefaultFlow();
}
boolean isDefault = false;
if (defaultFlow != null && defaultFlow.equalsIgnoreCase(sequenceFlow.getId())) {
isDefault = true;
}
boolean drawConditionalIndicator = sequenceFlow.getConditionExpression() != null && !(flowNode instanceof Gateway);
String sourceRef = sequenceFlow.getSourceRef();
String targetRef = sequenceFlow.getTargetRef();
FlowElement sourceElement = bpmnModel.getFlowElement(sourceRef);
FlowElement targetElement = bpmnModel.getFlowElement(targetRef);
List<GraphicInfo> graphicInfoList = bpmnModel.getFlowLocationGraphicInfo(sequenceFlow.getId());
if (graphicInfoList != null && graphicInfoList.size() > 0) {
graphicInfoList = connectionPerfectionizer(processDiagramCanvas, bpmnModel, sourceElement, targetElement, graphicInfoList);
int xPoints[]= new int[graphicInfoList.size()];
int yPoints[]= new int[graphicInfoList.size()];
for (int i=1; i<graphicInfoList.size(); i++) {
GraphicInfo graphicInfo = graphicInfoList.get(i);
GraphicInfo previousGraphicInfo = graphicInfoList.get(i-1);
if (i == 1) {
xPoints[0] = (int) previousGraphicInfo.getX();
yPoints[0] = (int) previousGraphicInfo.getY();
}
xPoints[i] = (int) graphicInfo.getX();
yPoints[i] = (int) graphicInfo.getY();
}
processDiagramCanvas.drawSequenceflow(xPoints, yPoints, drawConditionalIndicator, isDefault, highLighted, scaleFactor);
// Draw sequenceflow label
GraphicInfo labelGraphicInfo = bpmnModel.getLabelGraphicInfo(sequenceFlow.getId());
if (labelGraphicInfo != null) {
GraphicInfo lineCenter = getLineCenter(graphicInfoList);
processDiagramCanvas.drawLabel(sequenceFlow.getName(), lineCenter, false);
}
}
}
// Nested elements
if (flowNode instanceof FlowElementsContainer) {
for (FlowElement nestedFlowElement : ((FlowElementsContainer) flowNode).getFlowElements()) {
if (nestedFlowElement instanceof FlowNode) {
drawActivity(processDiagramCanvas, bpmnModel, (FlowNode) nestedFlowElement,
highLightedActivities, highLightedFlows, scaleFactor);
}
}
}
}
/**
* This method makes coordinates of connection flow better.
* @param processDiagramCanvas
* @param bpmnModel
* @param sourceElement
* @param targetElement
* @param graphicInfoList
* @return
*/
protected static List<GraphicInfo> connectionPerfectionizer(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, BaseElement sourceElement, BaseElement targetElement, List<GraphicInfo> graphicInfoList) {
GraphicInfo sourceGraphicInfo = bpmnModel.getGraphicInfo(sourceElement.getId());
GraphicInfo targetGraphicInfo = bpmnModel.getGraphicInfo(targetElement.getId());
DefaultProcessDiagramCanvas.SHAPE_TYPE sourceShapeType = getShapeType(sourceElement);
DefaultProcessDiagramCanvas.SHAPE_TYPE targetShapeType = getShapeType(targetElement);
return processDiagramCanvas.connectionPerfectionizer(sourceShapeType, targetShapeType, sourceGraphicInfo, targetGraphicInfo, graphicInfoList);
}
/**
* This method returns shape type of base element.<br>
* Each element can be presented as rectangle, rhombus, or ellipse.
* @param baseElement
* @return DefaultProcessDiagramCanvas.SHAPE_TYPE
*/
protected static DefaultProcessDiagramCanvas.SHAPE_TYPE getShapeType(BaseElement baseElement) {
if (baseElement instanceof Task || baseElement instanceof Activity || baseElement instanceof TextAnnotation) {
return DefaultProcessDiagramCanvas.SHAPE_TYPE.Rectangle;
} else if (baseElement instanceof Gateway) {
return DefaultProcessDiagramCanvas.SHAPE_TYPE.Rhombus;
} else if (baseElement instanceof Event) {
return DefaultProcessDiagramCanvas.SHAPE_TYPE.Ellipse;
} else {
// unknown source element, just do not correct coordinates
}
return null;
}
protected static GraphicInfo getLineCenter(List<GraphicInfo> graphicInfoList) {
GraphicInfo gi = new GraphicInfo();
int xPoints[]= new int[graphicInfoList.size()];
int yPoints[]= new int[graphicInfoList.size()];
double length = 0;
double[] lengths = new double[graphicInfoList.size()];
lengths[0] = 0;
double m;
for (int i=1; i<graphicInfoList.size(); i++) {
GraphicInfo graphicInfo = graphicInfoList.get(i);
GraphicInfo previousGraphicInfo = graphicInfoList.get(i-1);
if (i == 1) {
xPoints[0] = (int) previousGraphicInfo.getX();
yPoints[0] = (int) previousGraphicInfo.getY();
}
xPoints[i] = (int) graphicInfo.getX();
yPoints[i] = (int) graphicInfo.getY();
length += Math.sqrt(
Math.pow((int) graphicInfo.getX() - (int) previousGraphicInfo.getX(), 2) +
Math.pow((int) graphicInfo.getY() - (int) previousGraphicInfo.getY(), 2)
);
lengths[i] = length;
}
m = length / 2;
int p1 = 0, p2 = 1;
for (int i = 1; i < lengths.length; i++) {
double len = lengths[i];
p1 = i-1;
p2 = i;
if (len > m) {
break;
}
}
GraphicInfo graphicInfo1 = graphicInfoList.get(p1);
GraphicInfo graphicInfo2 = graphicInfoList.get(p2);
double AB = (int)graphicInfo2.getX() - (int)graphicInfo1.getX();
double OA = (int)graphicInfo2.getY() - (int)graphicInfo1.getY();
double OB = lengths[p2] - lengths[p1];
double ob = m - lengths[p1];
double ab = AB * ob / OB;
double oa = OA * ob / OB;
double mx = graphicInfo1.getX() + ab;
double my = graphicInfo1.getY() + oa;
gi.setX(mx);
gi.setY(my);
return gi;
}
protected void drawArtifact(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, Artifact artifact) {
ArtifactDrawInstruction drawInstruction = artifactDrawInstructions.get(artifact.getClass());
if (drawInstruction != null) {
drawInstruction.draw(processDiagramCanvas, bpmnModel, artifact);
}
}
private static void drawHighLight(DefaultProcessDiagramCanvas processDiagramCanvas, GraphicInfo graphicInfo) {
processDiagramCanvas.drawHighLight((int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
protected static DefaultProcessDiagramCanvas initProcessDiagramCanvas(BpmnModel bpmnModel, String imageType,
String activityFontName, String labelFontName, ClassLoader customClassLoader) {
// We need to calculate maximum values to know how big the image will be in its entirety
double minX = Double.MAX_VALUE;
double maxX = 0;
double minY = Double.MAX_VALUE;
double maxY = 0;
for (Pool pool : bpmnModel.getPools()) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(pool.getId());
minX = graphicInfo.getX();
maxX = graphicInfo.getX() + graphicInfo.getWidth();
minY = graphicInfo.getY();
maxY = graphicInfo.getY() + graphicInfo.getHeight();
}
List<FlowNode> flowNodes = gatherAllFlowNodes(bpmnModel);
for (FlowNode flowNode : flowNodes) {
GraphicInfo flowNodeGraphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
// width
if (flowNodeGraphicInfo.getX() + flowNodeGraphicInfo.getWidth() > maxX) {
maxX = flowNodeGraphicInfo.getX() + flowNodeGraphicInfo.getWidth();
}
if (flowNodeGraphicInfo.getX() < minX) {
minX = flowNodeGraphicInfo.getX();
}
// height
if (flowNodeGraphicInfo.getY() + flowNodeGraphicInfo.getHeight() > maxY) {
maxY = flowNodeGraphicInfo.getY() + flowNodeGraphicInfo.getHeight();
}
if (flowNodeGraphicInfo.getY() < minY) {
minY = flowNodeGraphicInfo.getY();
}
for (SequenceFlow sequenceFlow : flowNode.getOutgoingFlows()) {
List<GraphicInfo> graphicInfoList = bpmnModel.getFlowLocationGraphicInfo(sequenceFlow.getId());
if (graphicInfoList != null) {
for (GraphicInfo graphicInfo : graphicInfoList) {
// width
if (graphicInfo.getX() > maxX) {
maxX = graphicInfo.getX();
}
if (graphicInfo.getX() < minX) {
minX = graphicInfo.getX();
}
// height
if (graphicInfo.getY() > maxY) {
maxY = graphicInfo.getY();
}
if (graphicInfo.getY()< minY) {
minY = graphicInfo.getY();
}
}
}
}
}
List<Artifact> artifacts = gatherAllArtifacts(bpmnModel);
for (Artifact artifact : artifacts) {
GraphicInfo artifactGraphicInfo = bpmnModel.getGraphicInfo(artifact.getId());
if (artifactGraphicInfo != null) {
// width
if (artifactGraphicInfo.getX() + artifactGraphicInfo.getWidth() > maxX) {
maxX = artifactGraphicInfo.getX() + artifactGraphicInfo.getWidth();
}
if (artifactGraphicInfo.getX() < minX) {
minX = artifactGraphicInfo.getX();
}
// height
if (artifactGraphicInfo.getY() + artifactGraphicInfo.getHeight() > maxY) {
maxY = artifactGraphicInfo.getY() + artifactGraphicInfo.getHeight();
}
if (artifactGraphicInfo.getY() < minY) {
minY = artifactGraphicInfo.getY();
}
}
List<GraphicInfo> graphicInfoList = bpmnModel.getFlowLocationGraphicInfo(artifact.getId());
if (graphicInfoList != null) {
for (GraphicInfo graphicInfo : graphicInfoList) {
// width
if (graphicInfo.getX() > maxX) {
maxX = graphicInfo.getX();
}
if (graphicInfo.getX() < minX) {
minX = graphicInfo.getX();
}
// height
if (graphicInfo.getY() > maxY) {
maxY = graphicInfo.getY();
}
if (graphicInfo.getY()< minY) {
minY = graphicInfo.getY();
}
}
}
}
int nrOfLanes = 0;
for (Process process : bpmnModel.getProcesses()) {
for (Lane l : process.getLanes()) {
nrOfLanes++;
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(l.getId());
// // width
if (graphicInfo.getX() + graphicInfo.getWidth() > maxX) {
maxX = graphicInfo.getX() + graphicInfo.getWidth();
}
if (graphicInfo.getX() < minX) {
minX = graphicInfo.getX();
}
// height
if (graphicInfo.getY() + graphicInfo.getHeight() > maxY) {
maxY = graphicInfo.getY() + graphicInfo.getHeight();
}
if (graphicInfo.getY() < minY) {
minY = graphicInfo.getY();
}
}
}
// Special case, see http://jira.codehaus.org/browse/ACT-1431
if (flowNodes.isEmpty() && bpmnModel.getPools().isEmpty() && nrOfLanes == 0) {
// Nothing to show
minX = 0;
minY = 0;
}
return new DefaultProcessDiagramCanvas((int) maxX + 10,(int) maxY + 10, (int) minX, (int) minY,
imageType, activityFontName, labelFontName, customClassLoader);
}
protected static List<Artifact> gatherAllArtifacts(BpmnModel bpmnModel) {
List<Artifact> artifacts = new ArrayList<Artifact>();
for (Process process : bpmnModel.getProcesses()) {
artifacts.addAll(process.getArtifacts());
}
return artifacts;
}
protected static List<FlowNode> gatherAllFlowNodes(BpmnModel bpmnModel) {
List<FlowNode> flowNodes = new ArrayList<FlowNode>();
for (Process process : bpmnModel.getProcesses()) {
flowNodes.addAll(gatherAllFlowNodes(process));
}
return flowNodes;
}
protected static List<FlowNode> gatherAllFlowNodes(FlowElementsContainer flowElementsContainer) {
List<FlowNode> flowNodes = new ArrayList<FlowNode>();
for (FlowElement flowElement : flowElementsContainer.getFlowElements()) {
if (flowElement instanceof FlowNode) {
flowNodes.add((FlowNode) flowElement);
}
if (flowElement instanceof FlowElementsContainer) {
flowNodes.addAll(gatherAllFlowNodes((FlowElementsContainer) flowElement));
}
}
return flowNodes;
}
protected interface ActivityDrawInstruction {
void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode);
}
protected interface ArtifactDrawInstruction {
void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, Artifact artifact);
}
}