一套完整的后台管理系统java

/* 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 com.stylefeng.guns.core.flowable; import org.flowable.bpmn.model.*; import org.flowable.bpmn.model.Process; import org.flowable.image.ProcessDiagramGenerator; import org.flowable.image.impl.DefaultProcessDiagramCanvas; import java.awt.image.BufferedImage; import java.io.InputStream; import java.util.*; /** * 修复线的文字显示 * * @author Joram Barrez * @author Tijs Rademakers */ public class GunsDefaultProcessDiagramGenerator implements ProcessDiagramGenerator { protected Map<Class<? extends BaseElement>, ActivityDrawInstruction> activityDrawInstructions = new HashMap<>(); protected Map<Class<? extends BaseElement>, ArtifactDrawInstruction> artifactDrawInstructions = new HashMap<>(); public GunsDefaultProcessDiagramGenerator() { this(1.0); } // The instructions on how to draw a certain construct is // created statically and stored in a map for performance. public GunsDefaultProcessDiagramGenerator(final double scaleFactor) { // start event activityDrawInstructions.put(StartEvent.class, new ActivityDrawInstruction() { @Override 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 if (eventDefinition instanceof MessageEventDefinition) { processDiagramCanvas.drawMessageStartEvent(graphicInfo, scaleFactor); } else { processDiagramCanvas.drawNoneStartEvent(graphicInfo); } } else { processDiagramCanvas.drawNoneStartEvent(graphicInfo); } } }); // signal catch activityDrawInstructions.put(IntermediateCatchEvent.class, new ActivityDrawInstruction() { @Override 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); } else if (intermediateCatchEvent.getEventDefinitions().get(0) instanceof MessageEventDefinition) { processDiagramCanvas.drawCatchingMessageEvent(flowNode.getName(), graphicInfo, true, scaleFactor); } } } }); // signal throw activityDrawInstructions.put(ThrowEvent.class, new ActivityDrawInstruction() { @Override 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 if (throwEvent.getEventDefinitions().get(0) instanceof CompensateEventDefinition) { processDiagramCanvas.drawThrowingCompensateEvent(graphicInfo, scaleFactor); } else { processDiagramCanvas.drawThrowingNoneEvent(graphicInfo, scaleFactor); } } else { processDiagramCanvas.drawThrowingNoneEvent(graphicInfo, scaleFactor); } } }); // end event activityDrawInstructions.put(EndEvent.class, new ActivityDrawInstruction() { @Override 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); } } else { processDiagramCanvas.drawNoneEndEvent(graphicInfo, scaleFactor); } } }); // task activityDrawInstructions.put(Task.class, new ActivityDrawInstruction() { @Override public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) { GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNode.getId()); processDiagramCanvas.drawTask(flowNode.getName(), graphicInfo, scaleFactor); } }); // user task activityDrawInstructions.put(UserTask.class, new ActivityDrawInstruction() { @Override 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() { @Override public void draw(DefaultProcessDiagramCanvas processDiagramCanvas, BpmnModel bpmnModel, FlowNode flowNode) { GraphicInfo graphicInfo = bpmnModel.getGraphicInfo(flowNod