--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/eric6/Graphics/ClassItem.py Sun Apr 14 15:09:21 2019 +0200
@@ -0,0 +1,282 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2007 - 2019 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing an UML like class item.
+"""
+
+from __future__ import unicode_literals
+
+from PyQt5.QtGui import QFont
+from PyQt5.QtWidgets import QGraphicsSimpleTextItem, QStyle
+
+from .UMLItem import UMLModel, UMLItem
+
+import Utilities
+
+
+class ClassModel(UMLModel):
+ """
+ Class implementing the class model.
+ """
+ def __init__(self, name, methods=None, attributes=None):
+ """
+ Constructor
+
+ @param name the class name (string)
+ @param methods list of method names of the class
+ (list of strings)
+ @param attributes list of attribute names of the class
+ (list of strings)
+ """
+ super(ClassModel, self).__init__(name)
+
+ self.methods = [] if methods is None else methods[:]
+ self.attributes = [] if attributes is None else attributes[:]
+
+ def addMethod(self, method):
+ """
+ Public method to add a method to the class model.
+
+ @param method method name to be added (string)
+ """
+ self.methods.append(method)
+
+ def addAttribute(self, attribute):
+ """
+ Public method to add an attribute to the class model.
+
+ @param attribute attribute name to be added (string)
+ """
+ self.attributes.append(attribute)
+
+ def getMethods(self):
+ """
+ Public method to retrieve the methods of the class.
+
+ @return list of class methods (list of strings)
+ """
+ return self.methods[:]
+
+ def getAttributes(self):
+ """
+ Public method to retrieve the attributes of the class.
+
+ @return list of class attributes (list of strings)
+ """
+ return self.attributes[:]
+
+
+class ClassItem(UMLItem):
+ """
+ Class implementing an UML like class item.
+ """
+ ItemType = "class"
+
+ def __init__(self, model=None, external=False, x=0, y=0,
+ rounded=False, noAttrs=False, parent=None, scene=None):
+ """
+ Constructor
+
+ @param model class model containing the class data (ClassModel)
+ @param external flag indicating a class defined outside our scope
+ (boolean)
+ @param x x-coordinate (integer)
+ @param y y-coordinate (integer)
+ @keyparam rounded flag indicating a rounded corner (boolean)
+ @keyparam noAttrs flag indicating, that no attributes should be shown
+ (boolean)
+ @keyparam parent reference to the parent object (QGraphicsItem)
+ @keyparam scene reference to the scene object (QGraphicsScene)
+ """
+ UMLItem.__init__(self, model, x, y, rounded, parent)
+
+ self.external = external
+ self.noAttrs = noAttrs
+
+ scene.addItem(self)
+
+ if self.model:
+ self.__createTexts()
+ self.__calculateSize()
+
+ def __createTexts(self):
+ """
+ Private method to create the text items of the class item.
+ """
+ if self.model is None:
+ return
+
+ boldFont = QFont(self.font)
+ boldFont.setBold(True)
+
+ attrs = self.model.getAttributes()
+ meths = self.model.getMethods()
+
+ x = self.margin + self.rect().x()
+ y = self.margin + self.rect().y()
+ self.header = QGraphicsSimpleTextItem(self)
+ self.header.setFont(boldFont)
+ self.header.setText(self.model.getName())
+ self.header.setPos(x, y)
+ y += self.header.boundingRect().height() + self.margin
+ if not self.noAttrs and not self.external:
+ if attrs:
+ txt = "\n".join(attrs)
+ else:
+ txt = " "
+ self.attrs = QGraphicsSimpleTextItem(self)
+ self.attrs.setFont(self.font)
+ self.attrs.setText(txt)
+ self.attrs.setPos(x, y)
+ y += self.attrs.boundingRect().height() + self.margin
+ else:
+ self.attrs = None
+ if meths:
+ txt = "\n".join(meths)
+ else:
+ txt = " "
+ self.meths = QGraphicsSimpleTextItem(self)
+ self.meths.setFont(self.font)
+ self.meths.setText(txt)
+ self.meths.setPos(x, y)
+
+ def __calculateSize(self):
+ """
+ Private method to calculate the size of the class item.
+ """
+ if self.model is None:
+ return
+
+ width = self.header.boundingRect().width()
+ height = self.header.boundingRect().height()
+ if self.attrs:
+ width = max(width, self.attrs.boundingRect().width())
+ height = height + self.attrs.boundingRect().height() + self.margin
+ if self.meths:
+ width = max(width, self.meths.boundingRect().width())
+ height = height + self.meths.boundingRect().height()
+ self.setSize(width + 2 * self.margin, height + 2 * self.margin)
+
+ def setModel(self, model):
+ """
+ Public method to set the class model.
+
+ @param model class model containing the class data (ClassModel)
+ """
+ self.scene().removeItem(self.header)
+ self.header = None
+ if self.attrs:
+ self.scene().removeItem(self.attrs)
+ self.attrs = None
+ if self.meths:
+ self.scene().removeItem(self.meths)
+ self.meths = None
+ self.model = model
+ self.__createTexts()
+ self.__calculateSize()
+
+ def paint(self, painter, option, widget=None):
+ """
+ Public method to paint the item in local coordinates.
+
+ @param painter reference to the painter object (QPainter)
+ @param option style options (QStyleOptionGraphicsItem)
+ @param widget optional reference to the widget painted on (QWidget)
+ """
+ pen = self.pen()
+ if (option.state & QStyle.State_Selected) == \
+ QStyle.State(QStyle.State_Selected):
+ pen.setWidth(2)
+ else:
+ pen.setWidth(1)
+
+ painter.setPen(pen)
+ painter.setBrush(self.brush())
+ painter.setFont(self.font)
+
+ offsetX = self.rect().x()
+ offsetY = self.rect().y()
+ w = self.rect().width()
+ h = self.rect().height()
+
+ painter.drawRect(offsetX, offsetY, w, h)
+ y = self.margin + self.header.boundingRect().height()
+ painter.drawLine(offsetX, offsetY + y, offsetX + w - 1, offsetY + y)
+ if self.attrs:
+ y += self.margin + self.attrs.boundingRect().height()
+ painter.drawLine(offsetX, offsetY + y,
+ offsetX + w - 1, offsetY + y)
+
+ self.adjustAssociations()
+
+ def isExternal(self):
+ """
+ Public method returning the external state.
+
+ @return external state (boolean)
+ """
+ return self.external
+
+ def buildItemDataString(self):
+ """
+ Public method to build a string to persist the specific item data.
+
+ This string must start with ", " and should be built like
+ "attribute=value" with pairs separated by ", ". value must not
+ contain ", " or newlines.
+
+ @return persistence data (string)
+ """
+ entries = [
+ "is_external={0}".format(self.external),
+ "no_attributes={0}".format(self.noAttrs),
+ "name={0}".format(self.model.getName()),
+ ]
+ attributes = self.model.getAttributes()
+ if attributes:
+ entries.append("attributes={0}".format("||".join(attributes)))
+ methods = self.model.getMethods()
+ if methods:
+ entries.append("methods={0}".format("||".join(methods)))
+
+ return ", " + ", ".join(entries)
+
+ def parseItemDataString(self, version, data):
+ """
+ Public method to parse the given persistence data.
+
+ @param version version of the data (string)
+ @param data persisted data to be parsed (string)
+ @return flag indicating success (boolean)
+ """
+ parts = data.split(", ")
+ if len(parts) < 3:
+ return False
+
+ name = ""
+ attributes = []
+ methods = []
+
+ for part in parts:
+ key, value = part.split("=", 1)
+ if key == "is_external":
+ self.external = Utilities.toBool(value.strip())
+ elif key == "no_attributes":
+ self.noAttrs = Utilities.toBool(value.strip())
+ elif key == "name":
+ name = value.strip()
+ elif key == "attributes":
+ attributes = value.strip().split("||")
+ elif key == "methods":
+ methods = value.strip().split("||")
+ else:
+ return False
+
+ self.model = ClassModel(name, methods, attributes)
+ self.__createTexts()
+ self.__calculateSize()
+
+ return True
