MyDefaultProcessDiagramCanvas.java
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package com.ruoyi.flowable.config;
import org.flowable.bpmn.model.AssociationDirection;
import org.flowable.image.impl.DefaultProcessDiagramCanvas;
import java.awt.*;
import java.awt.geom.Line2D;
import java.awt.geom.RoundRectangle2D;
/**
* @author XuanXuan
* @date 2021-04-03
*/
public class MyDefaultProcessDiagramCanvas extends DefaultProcessDiagramCanvas {
//设置高亮线的颜色 这里我设置成绿色
protected static Color HIGHLIGHT_SEQUENCEFLOW_COLOR = Color.GREEN;
public MyDefaultProcessDiagramCanvas(int width, int height, int minX, int minY, String imageType, String activityFontName, String labelFontName, String annotationFontName, ClassLoader customClassLoader) {
super(width, height, minX, minY, imageType, activityFontName, labelFontName, annotationFontName, customClassLoader);
}
public MyDefaultProcessDiagramCanvas(int width, int height, int minX, int minY, String imageType) {
super(width, height, minX, minY, imageType);
}
/**
* 画线颜色设置
*/
@Override
public void drawConnection(int[] xPoints, int[] yPoints, boolean conditional, boolean isDefault, String connectionType,
AssociationDirection associationDirection, boolean highLighted, double scaleFactor) {
Paint originalPaint = g.getPaint();
Stroke originalStroke = g.getStroke();
g.setPaint(CONNECTION_COLOR);
if (connectionType.equals("association")) {
g.setStroke(ASSOCIATION_STROKE);
} else if (highLighted) {
//设置线的颜色
g.setPaint(originalPaint);
g.setStroke(HIGHLIGHT_FLOW_STROKE);
}
for (int i = 1; i < xPoints.length; i++) {
Integer sourceX = xPoints[i - 1];
Integer sourceY = yPoints[i - 1];
Integer targetX = xPoints[i];
Integer targetY = yPoints[i];
Line2D.Double line = new Line2D.Double(sourceX, sourceY, targetX, targetY);
g.draw(line);
}
if (isDefault) {
Line2D.Double line = new Line2D.Double(xPoints[0], yPoints[0], xPoints[1], yPoints[1]);
drawDefaultSequenceFlowIndicator(line, scaleFactor);
}
if (conditional) {
Line2D.Double line = new Line2D.Double(xPoints[0], yPoints[0], xPoints[1], yPoints[1]);
drawConditionalSequenceFlowIndicator(line, scaleFactor);
}
if (associationDirection == AssociationDirection.ONE || associationDirection == AssociationDirection.BOTH) {
Line2D.Double line = new Line2D.Double(xPoints[xPoints.length - 2], yPoints[xPoints.length - 2], xPoints[xPoints.length - 1], yPoints[xPoints.length - 1]);
drawArrowHead(line, scaleFactor);
}
if (associationDirection == AssociationDirection.BOTH) {
Line2D.Double line = new Line2D.Double(xPoints[1], yPoints[1], xPoints[0], yPoints[0]);
drawArrowHead(line, scaleFactor);
}
g.setPaint(originalPaint);
g.setStroke(originalStroke);
}
/**
* 高亮节点设置
*/
@Override
public void drawHighLight(int x, int y, int width, int height) {
Paint originalPaint = g.getPaint();
Stroke originalStroke = g.getStroke();
//设置高亮节点的颜色
g.setPaint(HIGHLIGHT_COLOR);
g.setStroke(THICK_TASK_BORDER_STROKE);
RoundRectangle2D rect = new RoundRectangle2D.Double(x, y, width, height, 20, 20);
g.draw(rect);
g.setPaint(originalPaint);
g.setStroke(originalStroke);
}
}