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lnetd_node.py
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from graph import Graph
from node import Node
from interface import Interface
from utilities import *
import json
import math
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtCore import (
Qt,
QSize,
QTimer,
QPointF,
QRectF,
QMetaObject,
QRect,
QCoreApplication,
QPoint,
QLineF,
pyqtSlot,
)
from PyQt5.QtGui import (
QPainter,
QBrush,
QPen,
QFont,
QIcon,
QTransform,
QPalette,
QColor,
)
from PyQt5.QtWidgets import (
QApplication,
QWidget,
QVBoxLayout,
QFrame,
QCheckBox,
QHBoxLayout,
QLineEdit,
QPushButton,
QMessageBox,
QFileDialog,
QSizePolicy,
QMenu,
QSlider,
QDialog,
QComboBox,
QLabel,
QSpacerItem,
QMainWindow,
QMenuBar,
QOpenGLWidget,
)
from lnetd_link import Link
class Rectangle(QtWidgets.QGraphicsEllipseItem):
def __init__(self, node):
super(Rectangle, self).__init__(parent=None)
self.icons = False
self.node = node
self.node_position = self.node.get_position()
self.node_radius = Vector(self.node.get_radius() + 8).repeat(2)
x1 = self.node_position[0]
y1 = self.node_position[1]
self.setPos(x1,y1)
self.setRect(-self.node.radius/2,-self.node.radius/2,self.node.radius,self.node.radius)
self.setFlag(QtWidgets.QGraphicsItem.ItemIsMovable)
self.setFlag(QtWidgets.QGraphicsItem.ItemIsSelectable)
self.setFlag(QtWidgets.QGraphicsItem.ItemSendsGeometryChanges)
# node ontop
self.setZValue(1)
self.grayBrush = QtGui.QBrush(QtCore.Qt.gray)
self.redBrush = QtGui.QBrush(QtCore.Qt.red)
self.whiteBrush = QtGui.QBrush(QtCore.Qt.white)
# self.font_family: str = "Times New Roman"
self.font_family = "Roboto"
self.font_size: int = 18
self.show_context = True
def shape(self):
"""this is the selection area and colision detection"""
path = QtGui.QPainterPath()
path.addRect(
self.rect()
)
return path
def boundingRect(self):
#return QRectF(*(self.node_position - self.node_radius), *(2 * self.node_radius))
return self.rect()
def paint(self, painter, option, widget=None):
# super(Rectangle, self).paint(painter, option, widget)
external = False
if "ASN" in self.node.label:
external = True
painter.save()
painter.setRenderHints(
QtGui.QPainter.Antialiasing
| QtGui.QPainter.TextAntialiasing
| QtGui.QPainter.SmoothPixmapTransform
| QtGui.QPainter.HighQualityAntialiasing,
True,
)
if external:
# print('External true',self.node.label)
if self.node._failed:
painter.setBrush(self.redBrush)
img_png = QtGui.QPixmap(":/icons/cloud_down.png")
elif option.state & QtWidgets.QStyle.State_Selected:
painter.setBrush(self.grayBrush)
img_png = QtGui.QPixmap(":/icons/cloud_selected.png")
else:
painter.setBrush(self.whiteBrush)
img_png = QtGui.QPixmap(":/icons/cloud.png")
else:
# print('External false',self.node.label)
if self.node._failed:
painter.setBrush(self.redBrush)
img_png = QtGui.QPixmap(":/icons/router_down.png")
elif option.state & QtWidgets.QStyle.State_Selected:
painter.setBrush(self.grayBrush)
img_png = QtGui.QPixmap(":/icons/router_new.png")
else:
painter.setBrush(self.whiteBrush)
img_png = QtGui.QPixmap(":/icons/router.png")
painter.setPen(QtGui.QPen(QtCore.Qt.black, 1))
if self.icons:
#
# FIX ME allow images instead via config option, find proper icons for router , router_selected , router_down
painter.setFont(QFont(self.font_family, self.font_size / 3.2))
painter.drawPixmap(
QRect(-self.node.radius/2,-self.node.radius/2,self.node.radius,self.node.radius),
img_png,
)
painter.drawText(
QRect(-self.node.radius/2,self.node.radius/4,self.node.radius,self.node.radius),
Qt.AlignCenter,
self.node.label,
)
else:
painter.setFont(QFont(self.font_family, self.font_size / 3.2))
#painter.drawEllipse(QPointF(*self.node_position), *self.node_radius)
painter.drawEllipse(self.rect())
painter.drawText(self.rect(),Qt.AlignCenter,self.node.label)
painter.restore()
def itemChange(self, change, value):
# change 9 == positionchange
if change == 9:
new_pos = self.boundingRect().center() + value
self.node.set_position(Vector(new_pos.x(), new_pos.y()))
for item in self.scene().items():
if isinstance(item, Link):
if item.link.target == self.node or item.source_node == self.node:
item.updatePosition()
# update scene matrix
self.prepareGeometryChange()
self.update()
# return super(Rectangle, self).itemChange(change, value)
return value
def contextMenuEvent(self, event):
if not self.show_context:
return
scene = self.scene()
cmenu = QMenu()
selected_nodes = [item for item in scene.selectedItems() if isinstance(item,Rectangle)]
if not self.node._failed and len(scene.selectedItems()) <= 1:
fail_node = cmenu.addAction("Node Down")
elif self.node._failed and len(scene.selectedItems()) <= 1:
unfail_node = cmenu.addAction("Node Up")
if len(scene.selectedItems()) <= 1:
delete_node = cmenu.addAction("Delete Node")
changeName = cmenu.addAction("Change Name")
setAsSource = cmenu.addAction("Set As Source")
setAsTarget = cmenu.addAction("Set As Target")
if len(selected_nodes) == 2:
add_interface = cmenu.addAction("Add Interface")
show_path = cmenu.addAction("Show Path Info")
setAsGroup = cmenu.addAction("Group")
if len(selected_nodes) > 2:
setAsGroup = cmenu.addAction("Group")
action = cmenu.exec_(event.screenPos())
if len(scene.selectedItems()) <=1:
if not self.node._failed and action == fail_node:
self.node._failed = True
#print('fail node')
if scene is not None:
scene.handleNodeActionDown(
self, "this is a message from Node Down GraphicsItem "
)
elif self.node._failed and action == unfail_node:
self.node._failed = False
#print('unfail node')
if scene is not None:
scene.handleNodeActionUp(
self, "this is a message from Node Up GraphicsItem"
)
elif action == changeName:
#print('change name')
scene.handlechangeNodeName(
self, "this is a message from NodeNameChange GraphicsItem")
elif action == delete_node:
#print('delete node')
scene.handleNodeActionDelete(
self, "this is a message from Node Up GraphicsItem")
elif action == setAsSource:
#print('set as source')
scene.handleNodeActionSetAsSource(
self, "this is a message from Node Up GraphicsItem")
elif action == setAsTarget:
#print('set as target')
scene.handleNodeActionSetAsTarget(
self, "this is a message from Node Up GraphicsItem")
elif len(scene.selectedItems()) == 2:
if action == add_interface:
#print('add interface')
scene.handleInterfaceAdd(
self, "this is a message from interfaceAdd GraphicsItem")
elif action == show_path:
#print('show path')
scene.handleShowPath(self, "message")
elif action == setAsGroup:
#print('group')
scene.handleNodeActionSetAsGroup(
self, "message from setAsGroup")
elif len(scene.selectedItems()) > 1:
if action == setAsGroup:
#print('group')
scene.handleNodeActionSetAsGroup(
self, "message from setAsGroup")
self.update()
super(Rectangle, self).contextMenuEvent(event)