diff -r 000000000000 -r de9c2efb9d02 Graphics/UMLItem.py
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Graphics/UMLItem.py Mon Dec 28 16:03:33 2009 +0000
@@ -0,0 +1,140 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2004 - 2009 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing the UMLWidget base class.
+"""
+
+from PyQt4.QtCore import *
+from PyQt4.QtGui import *
+
+import Preferences
+
+class UMLItem(QGraphicsRectItem):
+ """
+ Class implementing the UMLItem base class.
+ """
+ def __init__(self, x = 0, y = 0, rounded = False, parent = None):
+ """
+ Constructor
+
+ @param x x-coordinate (integer)
+ @param y y-coordinate (integer)
+ @param rounded flag indicating a rounded corner (boolean)
+ @keyparam parent reference to the parent object (QGraphicsItem)
+ """
+ QGraphicsRectItem.__init__(self, parent)
+ self.font = Preferences.getGraphics("Font")
+ self.margin = 5
+ self.associations = []
+ self.shouldAdjustAssociations = False
+
+ self.setRect(x, y, 60, 30)
+
+ if rounded:
+ p = self.pen()
+ p.setCapStyle(Qt.RoundCap)
+ p.setJoinStyle(Qt.RoundJoin)
+
+ self.setFlag(QGraphicsItem.ItemIsMovable, True)
+ self.setFlag(QGraphicsItem.ItemIsSelectable, True)
+
+ def setSize(self, width, height):
+ """
+ Public method to set the rectangles size.
+
+ @param width width of the rectangle (float)
+ @param height height of the rectangle (float)
+ """
+ rect = self.rect()
+ rect.setSize(QSizeF(width, height))
+ self.setRect(rect)
+
+ def addAssociation(self, assoc):
+ """
+ Method to add an association to this widget.
+
+ @param assoc association to be added (AssociationWidget)
+ """
+ if assoc and not assoc in self.associations:
+ self.associations.append(assoc)
+
+ def removeAssociation(self, assoc):
+ """
+ Method to remove an association to this widget.
+
+ @param assoc association to be removed (AssociationWidget)
+ """
+ if assoc and assoc in self.associations:
+ self.associations.remove(assoc)
+
+ def removeAssociations(self):
+ """
+ Method to remove all associations of this widget.
+ """
+ for assoc in self.associations[:]:
+ assoc.unassociate()
+ assoc.hide()
+ del assoc
+
+ def adjustAssociations(self):
+ """
+ Method to adjust the associations to widget movements.
+ """
+ if self.shouldAdjustAssociations:
+ for assoc in self.associations:
+ assoc.widgetMoved()
+ self.shouldAdjustAssociations = False
+
+ def moveBy(self, dx, dy):
+ """
+ Overriden method to move the widget relative.
+
+ @param dx relative movement in x-direction (float)
+ @param dy relative movement in y-direction (float)
+ """
+ QGraphicsRectItem.moveBy(self, dx, dy)
+ self.adjustAssociations()
+
+ def setPos(self, x, y):
+ """
+ Overriden method to set the items position.
+
+ @param x absolute x-position (float)
+ @param y absolute y-position (float)
+ """
+ QGraphicsRectItem.setPos(self, x, y)
+ self.adjustAssociations()
+
+ def itemChange(self, change, value):
+ """
+ Protected method called when an items state changes.
+
+ @param change the item's change (QGraphicsItem.GraphicsItemChange)
+ @param value the value of the change (QVariant)
+ @return adjusted values (QVariant)
+ """
+ if change == QGraphicsItem.ItemPositionChange:
+ self.shouldAdjustAssociations = True
+ return QGraphicsItem.itemChange(self, change, value)
+
+ 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.drawRect(self.rect())
+ self.adjustAssociations()
