mappanel.java

Contiki是一个开源

          x = n.node.getX();
          y = n.node.getY();
        } else {
          x = lx;
          y = 10;
          lx += 30;
        }

        if (!hideNetwork) {
          FontMetrics fm = g.getFontMetrics();
          int fnHeight = fm.getHeight();
          int fnDescent = fm.getDescent();
          for (int j = 0, mu = n.node.getLinkCount(); j < mu; j++) {
            Link link = n.node.getLink(j);
            if (link.node.hasLocation()) {
              long age = (time - link.getLastActive()) / 100;
              int x2 = link.node.getX();
              int y2 = link.node.getY();
              if (n.isSelected) {
                if (age > LINK_COLOR.length) {
                  age = 100;
                } else {
                  age -= 50;
                }
              }
              line.setLine(x, y, x2, y2);
              if (age < LINK_COLOR.length) {
                g.setColor(age < 0 ? LINK_COLOR[0] : LINK_COLOR[(int) age]);
              } else {
                g.setColor(LINK_COLOR[LINK_COLOR.length - 1]);
              }
              g2d.draw(line);
//              g.setColor(Color.lightGray);
              int xn1, xn2, yn1, yn2;
              if (x <= x2) {
                xn1 = x; xn2 = x2;
                yn1 = y; yn2 = y2;
              } else {
                xn1 = x2; xn2 = x;
                yn1 = y2; yn2 = y;
              }
              int dx = xn1 + (xn2 - xn1) / 2 + 4;
              int dy = yn1 + (yn2 - yn1) / 2 - fnDescent;
              if (yn2 < yn1) {
                dy += fnHeight - fnDescent;
              }
              g.drawString("ETX:" + (((int)(link.getETX() * 100 + 0.5)) / 100.0), dx, dy);
            }
          }
        }

        n.paint(g, x, y);

        g.setColor(Color.black);
        if (n.isSelected) {
          BasicGraphicsUtils.drawDashedRect(g, x - delta, y - delta, 2 * delta, 2 * delta);
        }
        if (selectedNode != null && selectedNode.message != null) {
          g.drawString(selectedNode.message, 10, 10);
        }
      }
    }
  }


  // -------------------------------------------------------------------
  // ActionListener
  // -------------------------------------------------------------------

  public void actionPerformed(ActionEvent e) {
    Object source = e.getSource();
    if (source == timer) {
      ticker++;
      if (hasPendingEvents) {
        boolean repaint = false;
        hasPendingEvents = false;
        MapNode[] nodes = nodeList;
        if (nodes != null) {
          long time = System.currentTimeMillis();
          for (int i = 0, n = nodes.length; i < n; i++) {
            if (nodes[i].tick(time)) {
              repaint = true;
            }
          }
        }
        if (repaint) {
          hasPendingEvents = true;
          repaint();
        }
      } else if ((ticker % 10) == 0) {
        repaint();
      }
    } else if (source == hideItem) {
      hideNetwork = !hideNetwork;
      if (!hideNetwork) hideItem.setText("Hide Network");
      else hideItem.setText("Show Network");
      repaint();

    } else if (source == resetNetworkItem) {
      MapNode[] nodes = nodeList;
      if (nodes != null) {
        for (int i = 0, m = nodes.length; i < m; i++) {
          MapNode n = nodes[i];
          n.node.clearLinks();
        }
        repaint();
      }
    }
  }


  // -------------------------------------------------------------------
  // Mouselistener
  // -------------------------------------------------------------------

  private MapNode getNodeAt(int mx, int my) {
    int lx = 10;
    MapNode[] nodes = nodeList;
    if (nodes != null) {
      for (int i = 0, m = nodes.length; i < m; i++) {
        MapNode n = nodes[i];
        int x, y;
        if (n.node.hasLocation()) {
          x = n.node.getX();
          y = n.node.getY();
        } else {
          x = lx;
          y = 10;
          lx += 30;
        }
        if (mx >= (x - delta)
            && mx <= (x + delta)
            && my >= (y - delta)
            && my <= (y + delta)) {
          return n;
        }
      }
    }
    return null;
  }

  public void mouseClicked(MouseEvent e) {
    int mx = e.getX();
    int my = e.getY();
    if (e.getButton() == MouseEvent.BUTTON1) {
      MapNode node = getNodeAt(mx, my);
      if (node != selectedNode) {
        server.selectNodes(node == null ? null : new Node[] { node.node });
      }
    }
    showPopup(e);
  }

  public void mousePressed(MouseEvent e) {
    if (e.getButton() == MouseEvent.BUTTON1) {
      MapNode aNode = getNodeAt(e.getX(), e.getY());
      if (aNode != selectedNode) {
        server.selectNodes(aNode != null ? new Node[] { aNode.node } : null);
      }
      draggedNode = aNode;
      draggedTime = System.currentTimeMillis();

    } else if (selectedNode != null) {
      selectedNode = draggedNode = null;
      server.selectNodes(null);
    }
    showPopup(e);
  }

  public void mouseReleased(MouseEvent e) {
    if (draggedNode != null && e.getButton() == MouseEvent.BUTTON1) {
      if ((!VISUAL_DRAG || (draggedTime > 0)) &&
          (System.currentTimeMillis() - draggedTime) < 300) {
        // Do not drag if mouse is only moved during click

      } else {
        draggedNode.node.setLocation(e.getX(), e.getY());
        server.updateNodeLocation(draggedNode.node);
        draggedNode = null;
        repaint();
      }
    }

    showPopup(e);
  }

  private void showPopup(MouseEvent e) {
    if (e.isPopupTrigger()
        && (e.getModifiers() & (MouseEvent.SHIFT_MASK|MouseEvent.CTRL_MASK)) == 0) {
//      popupNode = getNodeAt(e.getX(), e.getY());
//      nodeItem.setEnabled(popupNode != null);
      popupMenu.show(this, e.getX(), e.getY());
    }
  }

  public void mouseEntered(MouseEvent e) {
  }

  public void mouseExited(MouseEvent e) {
  }


  // -------------------------------------------------------------------
  // MouseMotion
  // -------------------------------------------------------------------

  public void mouseDragged(MouseEvent e) {
    if (!VISUAL_DRAG || draggedNode == null) {
      // Do nothing

    } else if (draggedTime > 0) {
      if ((System.currentTimeMillis() - draggedTime) > 300) {
        // No mouse click, time to drag the node
        draggedTime = -1;
      }

    } else {
      draggedNode.node.setLocation(e.getX(), e.getY());
      repaint();
    }
  }

  public void mouseMoved(MouseEvent e) {
  }


  // -------------------------------------------------------------------
  // MapNode
  // -------------------------------------------------------------------

  private static class MapNode {

    public final Node node;
    public boolean isSelected;
    public String message = null;

    private int tick = 0;

    MapNode(MapPanel panel, Node node) {
      this.node = node;
    }

    boolean tick(long time) {
      boolean r = false;
      if (tick > 0) {
        tick--;
        r = true;
      }

      for (int i = 0, n = node.getLinkCount(); i < n; i++) {
        Link link = node.getLink(i);
        long age = (time - link.getLastActive()) / 100;
        if (age < 200) {
          r = true;
          break;
        }
      }
      return r;
    }

    public void paint(Graphics g, int x, int y) {
      if (tick > (TOTAL_SHOW - SHOW_BLINK)) {
        if ((tick & 4) == 0) {
          // Hide circle
        } else {
          int index = FADE_COUNT - tick - 1;
          if (index < 0) {
            index = 0;
          }
          final int d = 8;
          g.setColor(OTHER_COLOR[index]);
          g.fillOval(x - d, y - d, d * 2 + 1, d * 2 + 1);
        }
      }

      if (tick < (TOTAL_SHOW - SHOW_BLINK) && tick > 0) {
        g.setColor(Color.red);
        int height = 13 * tick / TOTAL_SHOW;
        g.fillRect(x - 6, 5 + y - height, 2, height);
      }

      g.setColor(Color.black);
      final int od = 3;
      g.drawString(node.getID(), x + od * 2 + 3, y + 4);
      g.fillOval(x - od, y - od, od * 2 + 1, od * 2 + 1);
    }

  } // end of inner class MapNode

}