/* 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.engine.impl.bpmn.diagram;
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.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.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.ThrowEvent;
import org.activiti.bpmn.model.TimerEventDefinition;
import org.activiti.bpmn.model.UserTask;
/**
* Class to generate an image based the diagram interchange information in a
* BPMN 2.0 process.
*
* @author Joram Barrez
*/
public class ProcessDiagramGenerator {
protected static final Map<Class<? extends BaseElement>, ActivityDrawInstruction> activityDrawInstructions = new HashMap<Class<? extends BaseElement>, ActivityDrawInstruction>();
// The instructions on how to draw a certain construct is
// created statically and stored in a map for performance.
static {
// start event
activityDrawInstructions.put(StartEvent.class, new ActivityDrawInstruction() {
public void draw(ProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
StartEvent startEvent = (StartEvent) flowNode;
if (startEvent.getEventDefinitions() != null && startEvent.getEventDefinitions().size() > 0) {
if (startEvent.getEventDefinitions().get(0) instanceof TimerEventDefinition) {
processDiagramCanvas.drawTimerStartEvent((int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
} else if (startEvent.getEventDefinitions().get(0) instanceof ErrorEventDefinition) {
processDiagramCanvas.drawErrorStartEvent((int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
} else {
processDiagramCanvas.drawNoneStartEvent((int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
}
});
// signal catch
activityDrawInstructions.put(IntermediateCatchEvent.class, new ActivityDrawInstruction() {
public void draw(ProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
IntermediateCatchEvent intermediateCatchEvent = (IntermediateCatchEvent) flowNode;
if (intermediateCatchEvent.getEventDefinitions() != null && intermediateCatchEvent.getEventDefinitions().size() > 0) {
if (intermediateCatchEvent.getEventDefinitions().get(0) instanceof SignalEventDefinition) {
processDiagramCanvas.drawCatchingSignalEvent(flowNode.getName(), (int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight(), false);
} else if (intermediateCatchEvent.getEventDefinitions().get(0) instanceof TimerEventDefinition) {
processDiagramCanvas.drawCatchingTimerEvent(flowNode.getName(), (int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight(), false);
}
}
}
});
// signal throw
activityDrawInstructions.put(ThrowEvent.class, new ActivityDrawInstruction() {
public void draw(ProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
ThrowEvent throwEvent = (ThrowEvent) flowNode;
if (throwEvent.getEventDefinitions() != null && throwEvent.getEventDefinitions().size() > 0) {
if (throwEvent.getEventDefinitions().get(0) instanceof SignalEventDefinition) {
processDiagramCanvas.drawThrowingSignalEvent((int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
} else {
processDiagramCanvas.drawThrowingNoneEvent((int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
}
});
// end event
activityDrawInstructions.put(EndEvent.class, new ActivityDrawInstruction() {
public void draw(ProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
EndEvent endEvent = (EndEvent) flowNode;
if (endEvent.getEventDefinitions() != null && endEvent.getEventDefinitions().size() > 0) {
if (endEvent.getEventDefinitions().get(0) instanceof ErrorEventDefinition) {
processDiagramCanvas.drawErrorEndEvent(flowNode.getName(), (int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
} else {
processDiagramCanvas.drawNoneEndEvent((int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
}
});
// task
activityDrawInstructions.put(Task.class, new ActivityDrawInstruction() {
public void draw(ProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawTask(flowNode.getName(), (int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
});
// user task
activityDrawInstructions.put(UserTask.class, new ActivityDrawInstruction() {
public void draw(ProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawUserTask(flowNode.getName(), (int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
});
// script task
activityDrawInstructions.put(ScriptTask.class, new ActivityDrawInstruction() {
public void draw(ProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawScriptTask(flowNode.getName(), (int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
});
// service task
activityDrawInstructions.put(ServiceTask.class, new ActivityDrawInstruction() {
public void draw(ProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawServiceTask(flowNode.getName(), (int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
});
// receive task
activityDrawInstructions.put(ReceiveTask.class, new ActivityDrawInstruction() {
public void draw(ProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawReceiveTask(flowNode.getName(), (int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
});
// send task
activityDrawInstructions.put(SendTask.class, new ActivityDrawInstruction() {
public void draw(ProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawSendTask(flowNode.getName(), (int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
});
// manual task
activityDrawInstructions.put(ManualTask.class, new ActivityDrawInstruction() {
public void draw(ProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawManualTask(flowNode.getName(), (int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
});
// businessRuleTask task
activityDrawInstructions.put(BusinessRuleTask.class, new ActivityDrawInstruction() {
public void draw(ProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawBusinessRuleTask(flowNode.getName(), (int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
});
// exclusive gateway
activityDrawInstructions.put(ExclusiveGateway.class, new ActivityDrawInstruction() {
public void draw(ProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawExclusiveGateway((int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
});
// inclusive gateway
activityDrawInstructions.put(InclusiveGateway.class, new ActivityDrawInstruction() {
public void draw(ProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawInclusiveGateway((int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
});
// parallel gateway
activityDrawInstructions.put(ParallelGateway.class, new ActivityDrawInstruction() {
public void draw(ProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawParallelGateway((int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
});
// event based gateway
activityDrawInstructions.put(EventGateway.class, new ActivityDrawInstruction() {
public void draw(ProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawEventBasedGateway((int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
});
// Boundary timer
activityDrawInstructions.put(BoundaryEvent.class, new ActivityDrawInstruction() {
public void draw(ProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
BoundaryEvent boundaryEvent = (BoundaryEvent) flowNode;
if (boundaryEvent.getEventDefinitions() != null && boundaryEvent.getEventDefinitions().size() > 0) {
if (boundaryEvent.getEventDefinitions().get(0) instanceof TimerEventDefinition) {
processDiagramCanvas.drawCatchingTimerEvent(flowNode.getName(), (int) graphicInfo.getX(),
(int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight(), boundaryEvent.isCancelActivity());
} else if (boundaryEvent.getEventDefinitions().get(0) instanceof ErrorEventDefinition) {
processDiagramCanvas.drawCatchingErrorEvent((int) graphicInfo.getX(), (int) graphicInfo.getY(),
(int) graphicInfo.getWidth(), (int) graphicInfo.getHeight(), boundaryEvent.isCancelActivity());
} else if (boundaryEvent.getEventDefinitions().get(0) instanceof SignalEventDefinition) {
processDiagramCanvas.drawCatchingSignalEvent(flowNode.getName(), (int) graphicInfo.getX(),
(int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight(), boundaryEvent.isCancelActivity());
}
}
}
});
// subprocess
activityDrawInstructions.put(SubProcess.class, new ActivityDrawInstruction() {
public void draw(ProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
if (!graphicInfo.isExpanded()) {
processDiagramCanvas.drawCollapsedSubProcess(flowNode.getName(), (int) graphicInfo.getX(),
(int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight(), false);
} else {
processDiagramCanvas.drawExpandedSubProcess(flowNode.getName(), (int) graphicInfo.getX(),
(int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight(), false);
}
}
});
// Event subprocess
activityDrawInstructions.put(EventSubProcess.class, new ActivityDrawInstruction() {
public void draw(ProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
if (!graphicInfo.isExpanded()) {
processDiagramCanvas.drawCollapsedSubProcess(flowNode.getName(), (int) graphicInfo.getX(),
(int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight(), true);
} else {
processDiagramCanvas.drawExpandedSubProcess(flowNode.getName(), (int) graphicInfo.getX(),
(int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight(), true);
}
}
});
// call activity
activityDrawInstructions.put(CallActivity.class, new ActivityDrawInstruction() {
public void draw(ProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId());
processDiagramCanvas.drawCollapsedCallActivity(flowNode.getName(), (int) graphicInfo.getX(),
(int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
});
}
/**
* Generates a PNG diagram image of the given process definition, using the
* diagram interchange information of the process.
*/
public static InputStream generatePngDiagram(BpmnModel bpmnModel) {
return generateDiagram(bpmnModel, "png", Collections.<String> emptyList());
}
/**
* Generates a JPG diagram image of the given process definition, using the
* diagram interchange information of the process.
*/
public static InputStream generateJpgDiagram(BpmnModel bpmnModel) {
return generateDiagram(bpmnModel, "jpg", Collections.<String> emptyList());
}
protected static ProcessDiagramCanvas generateDiagram(BpmnModel bpmnModel, List<String> highLightedActivities) {
return generateDiagram(bpmnModel, highLightedActivities, Collections.<String> emptyList());
}
protected static ProcessDiagramCanvas generateDiagram(BpmnModel bpmnModel, List<String> highLightedActivities, List<String> highLightedFlows) {
ProcessDiagramCanvas processDiagramCanvas = initProcessDiagramCanvas(bpmnModel);
// // Draw pool shape, if process is participant in collaboration
for (Pool pool : bpmnModel.getPools()) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(pool.getId());
processDiagramCanvas.drawPoolOrLane(pool.getName(), (int) graphicInfo.getX(), (int) graphicInfo.getY(),
(int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
// Draw lanes
for (Process process : bpmnModel.getProcesses()) {
for (Lane lane : process.getLanes()) {
GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(lane.getId());
processDiagramCanvas.drawPoolOrLane(lane.getName(), (int) graphicInfo.getX(), (int) graphicInfo.getY(),
(int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
}
// Draw activities and their sequence-flows
for (FlowNode flowNode : bpmnModel.getProcesses().get(0).findFlowElementsOfType(FlowNode.class)) {
drawActivity(processDiagramCanvas, bpmnModel, flowNode, highLightedActivities, highLightedFlows);
}
return processDiagramCanvas;
}
public static InputStream generateDiagram(BpmnModel bpmnModel, String imageType, List<String> highLightedActivities) {
ProcessDiagramCanvas canvas = generateDiagram(bpmnModel, highLightedActivities, Collections.<String> emptyList());
return canvas.generateImage(imageType);
}
public static InputStream generateDiagram(BpmnModel bpmnModel, String imageType, List<String> highLightedActivities, List<String> highLightedFlows) {
return generateDiagram(bpmnModel, highLightedActivities, highLightedFlows).generateImage(imageType);
}
protected static void drawActivity(ProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode, List<String> highLightedActivities, List<String> highLightedFlows) {
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.isExpanded();
} else if (flowNode instanceof CallActivity) {
collapsed = true;
}
// 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()) {
List<GraphicInfo> graphicInfoList = bpmnModel.getFlowLocationGraphicInfo(sequenceFlow.getId());
for (int i=1; i<graphicInfoList.size(); i++) {
GraphicInfo graphicInfo = graphicInfoList.get(i);
GraphicInfo previousGraphicInfo = graphicInfoList.get(i-1);
boolean highLighted = (highLightedFlows.contains(sequenceFlow.getId()));
boolean drawConditionalIndicator = (i == 1) && sequenceFlow.getConditionExpression() != null && !(flowNode instanceof Gateway);
if (i < graphicInfoList.size() - 1) {
processDiagramCanvas.drawSequenceflowWithoutArrow((int) previousGraphicInfo.getX(), (int) previousGraphicInfo.getY(),
(int) graphicInfo.getX(), (int) graphicInfo.getY(), drawConditionalIndicator, highLighted);
} else {
processDiagramCanvas.drawSequenceflow((int) previousGraphicInfo.getX(), (int) previousGraphicInfo.getY(),
(int) graphicInfo.getX(), (int) graphicInfo.getY(), drawConditionalIndicator, highLighted);
}
}
}
// TODO: curvy parameter
// Outgoing transitions of activity
// for (PvmTransition sequenceFlow : activity.getOutgoingTransitions()) {
// boolean highLighted = (highLightedFlows.contains(sequenceFlow.getId()));
// boolean drawConditionalIndicator = sequenceFlow.getProperty(BpmnParse.PROPERTYNAME_CONDITION) != null
// && !((String) activity.getProperty("type")).toLowerCase().contains("gateway");
// boolean isDefault = sequenceFlow.getId().equals(activity.getProperty("default"))
// && ((String) activity.getProperty("type")).toLowerCase().contains("gateway");
//
// List<Integer> waypoints = ((TransitionImpl) sequenceFlow).getWaypoints();
// int xPoints[]= new int[waypoints.size()/2];
// int yPoints[]= new int[waypoints.size()/2];
// for (int i=0, j=0; i < waypoints.size(); i+=2, j++) { // waypoints.size()
// // minimally 4: x1, y1,
// // x2, y2
// xPoints[j] = waypoints.get(i);
// yPoints[j] = waypoints.get(i+1);
// }
// processDiagramCanvas.drawSequenceflow(xPoints, yPoints, drawConditionalIndicator, isDefault, highLighted);
// }
// Nested elements
if (flowNode instanceof FlowElementsContainer) {
for (FlowElement nestedFlowElement : ((FlowElementsContainer) flowNode).getFlowElements()) {
if (nestedFlowElement instanceof FlowNode) {
drawActivity(processDiagramCanvas, bpmnModel, (FlowNode) nestedFlowElement, highLightedActivities, highLightedFlows);
}
}
}
}
private static void drawHighLight(ProcessDiagramCanvas processDiagramCanvas, GraphicInfo graphicInfo) {
processDiagramCanvas.drawHighLight((int) graphicInfo.getX(), (int) graphicInfo.getY(), (int) graphicInfo.getWidth(), (int) graphicInfo.getHeight());
}
protected static ProcessDiagramCanvas initProcessDiagramCanvas(BpmnModel bpmnModel) {
// 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());
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.size() == 0 && bpmnModel.getPools().size() == 0 && nrOfLanes == 0) {
// Nothing to show
minX = 0;
minY = 0;
}
return new ProcessDiagramCanvas((int) maxX + 10,(int) maxY + 10, (int) minX, (int) minY);
}
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(ProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode);
}
}