public void paint(Graphics g) {
System.out.println("paint");
Graphics2D g2d = (Graphics2D) g;
Point1 p1, p2;
n = paintInfo.size();
if (toolFlag == 2) g2d.clearRect(0, 0, getSize().width - 100, getSize().height - 100); // 清除
for (int i = 0; i < n - 1; i++) {
p1 = (Point1) paintInfo.elementAt(i);
p2 = (Point1) paintInfo.elementAt(i + 1);
size = new BasicStroke(p1.boarder, BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL);
g2d.setColor(p1.col);
g2d.setStroke(size);
if (p1.tool == p2.tool) {
switch (p1.tool) {
case 0: // 画笔
Line2D line1 = new Line2D.Double(p1.x, p1.y, p2.x, p2.y);
g2d.draw(line1);
break;
case 1: // 橡皮
g.clearRect(p1.x, p1.y, p1.boarder, p1.boarder);
break;
case 3: // 画直线
Line2D line2 = new Line2D.Double(p1.x, p1.y, p2.x, p2.y);
g2d.draw(line2);
break;
case 4: // 画圆
Ellipse2D ellipse =
new Ellipse2D.Double(p1.x, p1.y, Math.abs(p2.x - p1.x), Math.abs(p2.y - p1.y));
g2d.draw(ellipse);
break;
case 5: // 画矩形
Rectangle2D rect =
new Rectangle2D.Double(p1.x, p1.y, Math.abs(p2.x - p1.x), Math.abs(p2.y - p1.y));
g2d.draw(rect);
break;
case 6: // 截断，跳过
i = i + 1;
break;
default:
} // end switch
} // end if
} // end for
}
/** Determines if this subtree contains the given vertex */
public boolean containsTreeVertex(TreeVertex vertex) {
if (vertex == null) return false;
for (int i = 0; i < m_vertexList.size(); i++) {
if ((TreeVertex) m_vertexList.elementAt(i) == vertex) return true;
}
for (int i = 0; i < m_edgeList.size(); i++) {
TreeEdge edge = (TreeEdge) m_edgeList.elementAt(i);
if (edge.getSourceVertex() == vertex || edge.getDestVertex() == vertex) {
return true;
}
}
return false;
}
private void recurseSelectEdges(TreeVertex root) {
Vector edges = root.getEdgeList();
for (int i = 0; i < edges.size(); i++) {
TreeEdge edge = (TreeEdge) edges.elementAt(i);
TreeVertex dest = edge.getDestVertex();
if (m_vertexList.contains(dest)) {
edge.setSelected(true);
recurseSelectEdges(dest);
}
}
}
public TreeVertex findRoot() {
if (m_root != null) return m_root;
int rootLayer = 1000;
TreeVertex root = null;
for (int i = 0; i < m_vertexList.size(); i++) {
TreeVertex vertex = (TreeVertex) m_vertexList.elementAt(i);
if (vertex.getLayer() < rootLayer) {
rootLayer = vertex.getLayer();
root = vertex;
}
}
return root;
}