class RoleNode(AbstractResizableNode):
"""
This class implements the 'Role' node.
"""
indexL = 0
indexB = 1
indexT = 3
indexR = 2
indexE = 4
identities = {Identity.Role}
item = Item.RoleNode
minheight = 50
minwidth = 70
def __init__(self, width=minwidth, height=minheight, brush=None, **kwargs):
"""
Initialize the node.
:type width: int
:type height: int
:type brush: QBrush
"""
super().__init__(**kwargs)
w = max(width, self.minwidth)
h = max(height, self.minheight)
s = self.handleSize
self.brush = brush or QBrush(QColor(252, 252, 252))
self.pen = QPen(QColor(0, 0, 0), 1.1, Qt.SolidLine)
self.polygon = self.createPolygon(w, h)
self.background = self.createBackground(w + s, h + s)
self.selection = self.createSelection(w + s, h + s)
self.label = Label('role', parent=self)
self.label.updatePos()
self.updateHandles()
####################################################################################################################
# #
# PROPERTIES #
# #
####################################################################################################################
@property
def asymmetric(self):
"""
Tells whether the Role is defined as asymmetric.
:rtype: bool
"""
scene = self.scene()
meta = scene.meta.metaFor(self.item, self.text())
return meta.asymmetry
@asymmetric.setter
def asymmetric(self, value):
"""
Set the Role asymmetry property.
:type value: bool
"""
scene = self.scene()
meta = scene.meta.metaFor(self.item, self.text())
meta.asymmetry = bool(value)
scene.meta.add(self.item, self.text(), meta)
@property
def functional(self):
"""
Tells whether the Role is defined as functional.
:rtype: bool
"""
scene = self.scene()
meta = scene.meta.metaFor(self.item, self.text())
return meta.functionality
@functional.setter
def functional(self, value):
"""
Set the Role functionality property.
:type value: bool
"""
scene = self.scene()
meta = scene.meta.metaFor(self.item, self.text())
meta.functionality = bool(value)
scene.meta.add(self.item, self.text(), meta)
@property
def identity(self):
"""
Returns the identity of the current node.
:rtype: Identity
"""
return Identity.Role
@identity.setter
def identity(self, identity):
"""
Set the identity of the current node.
:type identity: Identity
"""
pass
@property
def inverseFunctional(self):
"""
Tells whether the Role is defined as inverse functional.
:rtype: bool
"""
scene = self.scene()
meta = scene.meta.metaFor(self.item, self.text())
return meta.inverseFunctionality
@inverseFunctional.setter
def inverseFunctional(self, value):
"""
Set the Role inverse functionality property.
:type value: bool
"""
scene = self.scene()
meta = scene.meta.metaFor(self.item, self.text())
meta.inverseFunctionality = bool(value)
scene.meta.add(self.item, self.text(), meta)
@property
def irreflexive(self):
"""
Tells whether the Role is defined as irreflexive.
:rtype: bool
"""
scene = self.scene()
meta = scene.meta.metaFor(self.item, self.text())
return meta.irreflexivity
@irreflexive.setter
def irreflexive(self, value):
"""
Set the Role irreflexivity property.
:type value: bool
"""
scene = self.scene()
meta = scene.meta.metaFor(self.item, self.text())
meta.irreflexivity = bool(value)
scene.meta.add(self.item, self.text(), meta)
@property
def reflexive(self):
"""
Tells whether the Role is defined as reflexive.
:rtype: bool
"""
scene = self.scene()
meta = scene.meta.metaFor(self.item, self.text())
return meta.reflexivity
@reflexive.setter
def reflexive(self, value):
"""
Set the Role reflexivity property.
:type value: bool
"""
scene = self.scene()
meta = scene.meta.metaFor(self.item, self.text())
meta.reflexivity = bool(value)
scene.meta.add(self.item, self.text(), meta)
@property
def special(self):
"""
Returns the special type of this node.
:rtype: Special
"""
return Special.forValue(self.text())
@property
def symmetric(self):
"""
Tells whether the Role is defined as symmetric.
:rtype: bool
"""
scene = self.scene()
meta = scene.meta.metaFor(self.item, self.text())
return meta.symmetry
@symmetric.setter
def symmetric(self, value):
"""
Set the Role symmetry property.
:type value: bool
"""
scene = self.scene()
meta = scene.meta.metaFor(self.item, self.text())
meta.symmetry = bool(value)
scene.meta.add(self.item, self.text(), meta)
@property
def transitive(self):
"""
Tells whether the Role is defined as transitive.
:rtype: bool
"""
scene = self.scene()
meta = scene.meta.metaFor(self.item, self.text())
return meta.transitivity
@transitive.setter
def transitive(self, value):
"""
Set the Role transitivity property.
:type value: bool
"""
scene = self.scene()
meta = scene.meta.metaFor(self.item, self.text())
meta.transitivity = bool(value)
scene.meta.add(self.item, self.text(), meta)
####################################################################################################################
# #
# INTERFACE #
# #
####################################################################################################################
def copy(self, scene):
"""
Create a copy of the current item.
:type scene: DiagramScene
"""
kwargs = {
'id': self.id,
'brush': self.brush,
'height': self.height(),
'width': self.width(),
}
node = scene.factory.create(item=self.item, scene=scene, **kwargs)
node.setPos(self.pos())
node.setText(self.text())
node.setTextPos(node.mapFromScene(self.mapToScene(self.textPos())))
return node
@staticmethod
def createBackground(width, height):
"""
Returns the initialized background polygon according to the given width/height.
:type width: int
:type height: int
:rtype: QPolygonF
"""
return QPolygonF([
QPointF(-width / 2, 0),
QPointF(0, +height / 2),
QPointF(+width / 2, 0),
QPointF(0, -height / 2),
QPointF(-width / 2, 0)
])
@staticmethod
def createPolygon(width, height):
"""
Returns the initialized polygon according to the given width/height.
:type width: int
:type height: int
:rtype: QPolygonF
"""
return QPolygonF([
QPointF(-width / 2, 0),
QPointF(0, +height / 2),
QPointF(+width / 2, 0),
QPointF(0, -height / 2),
QPointF(-width / 2, 0)
])
def height(self):
"""
Returns the height of the shape.
:rtype: int
"""
return self.polygon[self.indexB].y() - self.polygon[self.indexT].y()
def interactiveResize(self, mousePos):
"""
Handle the interactive resize of the shape.
:type mousePos: QPointF
"""
scene = self.scene()
snap = scene.mainwindow.snapToGrid
size = scene.GridSize
offset = self.handleSize + self.handleMove
moved = self.label.moved
R = QRectF(self.boundingRect())
D = QPointF(0, 0)
minBoundW = self.minwidth + offset * 2
minBoundH = self.minheight + offset * 2
self.prepareGeometryChange()
if self.mousePressHandle == self.handleTL:
fromX = self.mousePressBound.left()
fromY = self.mousePressBound.top()
toX = fromX + mousePos.x() - self.mousePressPos.x()
toY = fromY + mousePos.y() - self.mousePressPos.y()
toX = snapF(toX, size, -offset, snap)
toY = snapF(toY, size, -offset, snap)
D.setX(toX - fromX)
D.setY(toY - fromY)
R.setLeft(toX)
R.setTop(toY)
## CLAMP SIZE
if R.width() < minBoundW:
D.setX(D.x() - minBoundW + R.width())
R.setLeft(R.left() - minBoundW + R.width())
if R.height() < minBoundH:
D.setY(D.y() - minBoundH + R.height())
R.setTop(R.top() - minBoundH + R.height())
self.selection.setLeft(R.left())
self.selection.setTop(R.top())
self.background[self.indexT] = QPointF(R.left() + R.width() / 2,
R.top())
self.background[self.indexB] = QPointF(
R.left() + R.width() / 2, self.background[self.indexB].y())
self.background[self.indexL] = QPointF(R.left(),
R.top() + R.height() / 2)
self.background[self.indexE] = QPointF(R.left(),
R.top() + R.height() / 2)
self.background[self.indexR] = QPointF(
self.background[self.indexR].x(),
R.top() + R.height() / 2)
self.polygon[self.indexT] = QPointF(R.left() + R.width() / 2,
R.top() + offset)
self.polygon[self.indexB] = QPointF(R.left() + R.width() / 2,
self.polygon[self.indexB].y())
self.polygon[self.indexL] = QPointF(R.left() + offset,
R.top() + R.height() / 2)
self.polygon[self.indexE] = QPointF(R.left() + offset,
R.top() + R.height() / 2)
self.polygon[self.indexR] = QPointF(self.polygon[self.indexR].x(),
R.top() + R.height() / 2)
elif self.mousePressHandle == self.handleTM:
fromY = self.mousePressBound.top()
toY = fromY + mousePos.y() - self.mousePressPos.y()
toY = snapF(toY, size, -offset, snap)
D.setY(toY - fromY)
R.setTop(toY)
## CLAMP SIZE
if R.height() < minBoundH:
D.setY(D.y() - minBoundH + R.height())
R.setTop(R.top() - minBoundH + R.height())
self.selection.setTop(R.top())
self.background[self.indexT] = QPointF(
self.background[self.indexT].x(), R.top())
self.background[self.indexL] = QPointF(
self.background[self.indexL].x(),
R.top() + R.height() / 2)
self.background[self.indexE] = QPointF(
self.background[self.indexE].x(),
R.top() + R.height() / 2)
self.background[self.indexR] = QPointF(
self.background[self.indexR].x(),
R.top() + R.height() / 2)
self.polygon[self.indexT] = QPointF(self.polygon[self.indexT].x(),
R.top() + offset)
self.polygon[self.indexL] = QPointF(self.polygon[self.indexL].x(),
R.top() + R.height() / 2)
self.polygon[self.indexE] = QPointF(self.polygon[self.indexE].x(),
R.top() + R.height() / 2)
self.polygon[self.indexR] = QPointF(self.polygon[self.indexR].x(),
R.top() + R.height() / 2)
elif self.mousePressHandle == self.handleTR:
fromX = self.mousePressBound.right()
fromY = self.mousePressBound.top()
toX = fromX + mousePos.x() - self.mousePressPos.x()
toY = fromY + mousePos.y() - self.mousePressPos.y()
toX = snapF(toX, size, +offset, snap)
toY = snapF(toY, size, -offset, snap)
D.setX(toX - fromX)
D.setY(toY - fromY)
R.setRight(toX)
R.setTop(toY)
## CLAMP SIZE
if R.width() < minBoundW:
D.setX(D.x() + minBoundW - R.width())
R.setRight(R.right() + minBoundW - R.width())
if R.height() < minBoundH:
D.setY(D.y() - minBoundH + R.height())
R.setTop(R.top() - minBoundH + R.height())
self.selection.setRight(R.right())
self.selection.setTop(R.top())
self.background[self.indexT] = QPointF(R.right() - R.width() / 2,
R.top())
self.background[self.indexB] = QPointF(
R.right() - R.width() / 2, self.background[self.indexB].y())
self.background[self.indexL] = QPointF(
self.background[self.indexL].x(),
R.top() + R.height() / 2)
self.background[self.indexE] = QPointF(
self.background[self.indexE].x(),
R.top() + R.height() / 2)
self.background[self.indexR] = QPointF(R.right(),
R.top() + R.height() / 2)
self.polygon[self.indexT] = QPointF(R.right() - R.width() / 2,
R.top() + offset)
self.polygon[self.indexB] = QPointF(R.right() - R.width() / 2,
self.polygon[self.indexB].y())
self.polygon[self.indexL] = QPointF(self.polygon[self.indexL].x(),
R.top() + R.height() / 2)
self.polygon[self.indexE] = QPointF(self.polygon[self.indexE].x(),
R.top() + R.height() / 2)
self.polygon[self.indexR] = QPointF(R.right() - offset,
R.top() + R.height() / 2)
elif self.mousePressHandle == self.handleML:
fromX = self.mousePressBound.left()
toX = fromX + mousePos.x() - self.mousePressPos.x()
toX = snapF(toX, size, -offset, snap)
D.setX(toX - fromX)
R.setLeft(toX)
## CLAMP SIZE
if R.width() < minBoundW:
D.setX(D.x() - minBoundW + R.width())
R.setLeft(R.left() - minBoundW + R.width())
self.selection.setLeft(R.left())
self.background[self.indexL] = QPointF(
R.left(),
self.mousePressBound.top() + self.mousePressBound.height() / 2)
self.background[self.indexE] = QPointF(
R.left(),
self.mousePressBound.top() + self.mousePressBound.height() / 2)
self.background[self.indexT] = QPointF(
R.left() + R.width() / 2, self.background[self.indexT].y())
self.background[self.indexB] = QPointF(
R.left() + R.width() / 2, self.background[self.indexB].y())
self.polygon[self.indexL] = QPointF(
R.left() + offset,
self.mousePressBound.top() + self.mousePressBound.height() / 2)
self.polygon[self.indexE] = QPointF(
R.left() + offset,
self.mousePressBound.top() + self.mousePressBound.height() / 2)
self.polygon[self.indexT] = QPointF(R.left() + R.width() / 2,
self.polygon[self.indexT].y())
self.polygon[self.indexB] = QPointF(R.left() + R.width() / 2,
self.polygon[self.indexB].y())
elif self.mousePressHandle == self.handleMR:
fromX = self.mousePressBound.right()
toX = fromX + mousePos.x() - self.mousePressPos.x()
toX = snapF(toX, size, +offset, snap)
D.setX(toX - fromX)
R.setRight(toX)
## CLAMP SIZE
if R.width() < minBoundW:
D.setX(D.x() + minBoundW - R.width())
R.setRight(R.right() + minBoundW - R.width())
self.selection.setRight(R.right())
self.background[self.indexR] = QPointF(
R.right(),
self.mousePressBound.top() + self.mousePressBound.height() / 2)
self.background[self.indexT] = QPointF(
R.right() - R.width() / 2, self.background[self.indexT].y())
self.background[self.indexB] = QPointF(
R.right() - R.width() / 2, self.background[self.indexB].y())
self.polygon[self.indexR] = QPointF(
R.right() - offset,
self.mousePressBound.top() + self.mousePressBound.height() / 2)
self.polygon[self.indexT] = QPointF(R.right() - R.width() / 2,
self.polygon[self.indexT].y())
self.polygon[self.indexB] = QPointF(R.right() - R.width() / 2,
self.polygon[self.indexB].y())
elif self.mousePressHandle == self.handleBL:
fromX = self.mousePressBound.left()
fromY = self.mousePressBound.bottom()
toX = fromX + mousePos.x() - self.mousePressPos.x()
toY = fromY + mousePos.y() - self.mousePressPos.y()
toX = snapF(toX, size, -offset, snap)
toY = snapF(toY, size, +offset, snap)
D.setX(toX - fromX)
D.setY(toY - fromY)
R.setLeft(toX)
R.setBottom(toY)
## CLAMP SIZE
if R.width() < minBoundW:
D.setX(D.x() - minBoundW + R.width())
R.setLeft(R.left() - minBoundW + R.width())
if R.height() < minBoundH:
D.setY(D.y() + minBoundH - R.height())
R.setBottom(R.bottom() + minBoundH - R.height())
self.selection.setLeft(R.left())
self.selection.setBottom(R.bottom())
self.background[self.indexT] = QPointF(
R.left() + R.width() / 2, self.background[self.indexT].y())
self.background[self.indexB] = QPointF(R.left() + R.width() / 2,
R.bottom())
self.background[self.indexL] = QPointF(R.left(),
R.bottom() - R.height() / 2)
self.background[self.indexE] = QPointF(R.left(),
R.bottom() - R.height() / 2)
self.background[self.indexR] = QPointF(
self.background[self.indexR].x(),
R.bottom() - R.height() / 2)
self.polygon[self.indexT] = QPointF(R.left() + R.width() / 2,
self.polygon[self.indexT].y())
self.polygon[self.indexB] = QPointF(R.left() + R.width() / 2,
R.bottom() - offset)
self.polygon[self.indexL] = QPointF(R.left() + offset,
R.bottom() - R.height() / 2)
self.polygon[self.indexE] = QPointF(R.left() + offset,
R.bottom() - R.height() / 2)
self.polygon[self.indexR] = QPointF(self.polygon[self.indexR].x(),
R.bottom() - R.height() / 2)
elif self.mousePressHandle == self.handleBM:
fromY = self.mousePressBound.bottom()
toY = fromY + mousePos.y() - self.mousePressPos.y()
toY = snapF(toY, size, +offset, snap)
D.setY(toY - fromY)
R.setBottom(toY)
## CLAMP SIZE
if R.height() < minBoundH:
D.setY(D.y() + minBoundH - R.height())
R.setBottom(R.bottom() + minBoundH - R.height())
self.selection.setBottom(R.bottom())
self.background[self.indexB] = QPointF(
self.background[self.indexB].x(), R.bottom())
self.background[self.indexL] = QPointF(
self.background[self.indexL].x(),
R.top() + R.height() / 2)
self.background[self.indexE] = QPointF(
self.background[self.indexE].x(),
R.top() + R.height() / 2)
self.background[self.indexR] = QPointF(
self.background[self.indexR].x(),
R.top() + R.height() / 2)
self.polygon[self.indexB] = QPointF(self.polygon[self.indexB].x(),
R.bottom() - offset)
self.polygon[self.indexL] = QPointF(self.polygon[self.indexL].x(),
R.top() + R.height() / 2)
self.polygon[self.indexE] = QPointF(self.polygon[self.indexE].x(),
R.top() + R.height() / 2)
self.polygon[self.indexR] = QPointF(self.polygon[self.indexR].x(),
R.top() + R.height() / 2)
elif self.mousePressHandle == self.handleBR:
fromX = self.mousePressBound.right()
fromY = self.mousePressBound.bottom()
toX = fromX + mousePos.x() - self.mousePressPos.x()
toY = fromY + mousePos.y() - self.mousePressPos.y()
toX = snapF(toX, size, +offset, snap)
toY = snapF(toY, size, +offset, snap)
D.setX(toX - fromX)
D.setY(toY - fromY)
R.setRight(toX)
R.setBottom(toY)
## CLAMP SIZE
if R.width() < minBoundW:
D.setX(D.x() + minBoundW - R.width())
R.setRight(R.right() + minBoundW - R.width())
if R.height() < minBoundH:
D.setY(D.y() + minBoundH - R.height())
R.setBottom(R.bottom() + minBoundH - R.height())
self.selection.setRight(R.right())
self.selection.setBottom(R.bottom())
self.background[self.indexT] = QPointF(
R.right() - R.width() / 2, self.background[self.indexT].y())
self.background[self.indexB] = QPointF(R.right() - R.width() / 2,
R.bottom())
self.background[self.indexL] = QPointF(
self.background[self.indexL].x(),
R.bottom() - R.height() / 2)
self.background[self.indexE] = QPointF(
self.background[self.indexE].x(),
R.bottom() - R.height() / 2)
self.background[self.indexR] = QPointF(R.right(),
R.bottom() - R.height() / 2)
self.polygon[self.indexT] = QPointF(R.right() - R.width() / 2,
self.polygon[self.indexT].y())
self.polygon[self.indexB] = QPointF(R.right() - R.width() / 2,
R.bottom() - offset)
self.polygon[self.indexL] = QPointF(self.polygon[self.indexL].x(),
R.bottom() - R.height() / 2)
self.polygon[self.indexE] = QPointF(self.polygon[self.indexE].x(),
R.bottom() - R.height() / 2)
self.polygon[self.indexR] = QPointF(R.right() - offset,
R.bottom() - R.height() / 2)
self.updateHandles()
self.updateTextPos(moved=moved)
self.updateAnchors(self.mousePressData, D)
def width(self):
"""
Returns the width of the shape.
:rtype: int
"""
return self.polygon[self.indexR].x() - self.polygon[self.indexL].x()
####################################################################################################################
# #
# GEOMETRY #
# #
####################################################################################################################
def boundingRect(self):
"""
Returns the shape bounding rectangle.
:rtype: QRectF
"""
return self.selection
def painterPath(self):
"""
Returns the current shape as QPainterPath (used for collision detection).
:rtype: QPainterPath
"""
path = QPainterPath()
path.addPolygon(self.polygon)
return path
def shape(self):
"""
Returns the shape of this item as a QPainterPath in local coordinates.
:rtype: QPainterPath
"""
path = QPainterPath()
path.addPolygon(self.polygon)
for shape in self.handleBound:
path.addEllipse(shape)
return path
####################################################################################################################
# #
# LABEL SHORTCUTS #
# #
####################################################################################################################
def textPos(self):
"""
Returns the current label position in item coordinates.
:rtype: QPointF
"""
return self.label.pos()
def text(self):
"""
Returns the label text.
:rtype: str
"""
return self.label.text()
def setTextPos(self, pos):
"""
Set the label position.
:type pos: QPointF
"""
self.label.setPos(pos)
def setText(self, text):
"""
Set the label text.
:type text: str
"""
self.label.editable = Special.forValue(text) is None
self.label.setText(text)
def updateTextPos(self, *args, **kwargs):
"""
Update the label position.
"""
self.label.updatePos(*args, **kwargs)
####################################################################################################################
# #
# DRAWING #
# #
####################################################################################################################
@classmethod
def image(cls, **kwargs):
"""
Returns an image suitable for the palette.
:rtype: QPixmap
"""
# INITIALIZATION
pixmap = QPixmap(kwargs['w'], kwargs['h'])
pixmap.fill(Qt.transparent)
painter = QPainter(pixmap)
polygon = cls.createPolygon(46, 34)
# ITEM SHAPE
painter.setRenderHint(QPainter.Antialiasing)
painter.setPen(QPen(QColor(0, 0, 0), 1.1, Qt.SolidLine))
painter.setBrush(QColor(252, 252, 252))
painter.translate(kwargs['w'] / 2, kwargs['h'] / 2)
painter.drawPolygon(polygon)
# TEXT WITHIN SHAPE
painter.setFont(Font('Arial', 11, Font.Light))
painter.drawText(polygon.boundingRect(), Qt.AlignCenter, 'role')
return pixmap
def paint(self, painter, option, widget=None):
"""
Paint the node in the diagram scene.
:type painter: QPainter
:type option: QStyleOptionGraphicsItem
:type widget: QWidget
"""
# SET THE RECT THAT NEEDS TO BE REPAINTED
painter.setClipRect(option.exposedRect)
# SELECTION AREA
painter.setPen(self.selectionPen)
painter.setBrush(self.selectionBrush)
painter.drawRect(self.selection)
# SYNTAX VALIDATION
painter.setRenderHint(QPainter.Antialiasing)
painter.setPen(self.backgroundPen)
painter.setBrush(self.backgroundBrush)
painter.drawPolygon(self.background)
# ITEM SHAPE
painter.setPen(self.pen)
painter.setBrush(self.brush)
painter.drawPolygon(self.polygon)
# RESIZE HANDLES
painter.setRenderHint(QPainter.Antialiasing)
for i in range(self.handleNum):
painter.setBrush(self.handleBrush[i])
painter.setPen(self.handlePen[i])
painter.drawEllipse(self.handleBound[i])
class ValueDomainNode(AbstractNode):
"""
This class implements the 'Value-Domain' node.
"""
identities = {Identity.ValueDomain}
item = Item.ValueDomainNode
minheight = 40
minwidth = 90
def __init__(self, width=minwidth, height=minheight, brush=None, **kwargs):
"""
Initialize the Value-Domain node.
:type width: int
:type height: int
:type brush: QBrush
"""
super().__init__(**kwargs)
self.brush = brush or QBrush(QColor(252, 252, 252))
self.pen = QPen(QColor(0, 0, 0), 1.0, Qt.SolidLine)
self.polygon = self.createPolygon(self.minwidth, self.minheight)
self.background = self.createBackground(self.minwidth + 8,
self.minheight + 8)
self.selection = self.createSelection(self.minwidth + 8,
self.minheight + 8)
self.label = Label('xsd:string',
movable=False,
editable=False,
parent=self)
self.updateLayout()
####################################################################################################################
# #
# PROPERTIES #
# #
####################################################################################################################
@property
def datatype(self):
"""
Returns the datatype associated with this node.
:rtype: XsdDatatype
"""
return XsdDatatype.forValue(self.text())
@property
def identity(self):
"""
Returns the identity of the current node.
:rtype: Identity
"""
return Identity.ValueDomain
@identity.setter
def identity(self, identity):
"""
Set the identity of the current node.
:type identity: Identity
"""
pass
####################################################################################################################
# #
# INTERFACE #
# #
####################################################################################################################
def copy(self, scene):
"""
Create a copy of the current item.
:type scene: DiagramScene
"""
kwargs = {
'id': self.id,
'brush': self.brush,
'height': self.height(),
'width': self.width(),
}
node = scene.factory.create(item=self.item, scene=scene, **kwargs)
node.setPos(self.pos())
node.setText(self.text())
node.setTextPos(node.mapFromScene(self.mapToScene(self.textPos())))
return node
@staticmethod
def createBackground(width, height):
"""
Returns the initialized background polygon according to the given width/height.
:type width: int
:type height: int
:rtype: QRectF
"""
return QRectF(-width / 2, -height / 2, width, height)
@staticmethod
def createPolygon(width, height):
"""
Returns the initialized polygon according to the given width/height.
:type width: int
:type height: int
:rtype: QRectF
"""
return QRectF(-width / 2, -height / 2, width, height)
def height(self):
"""
Returns the height of the shape.
:rtype: int
"""
return self.polygon.height()
def updateLayout(self):
"""
Update current shape rect according to the selected datatype.
"""
width = max(self.label.width() + 16, self.minwidth)
self.polygon = self.createPolygon(width, self.minheight)
self.background = self.createBackground(width + 8, self.minheight + 8)
self.selection = self.createSelection(width + 8, self.minheight + 8)
self.updateTextPos()
self.updateEdges()
def width(self):
"""
Returns the width of the shape.
:rtype: int
"""
return self.polygon.width()
####################################################################################################################
# #
# GEOMETRY #
# #
####################################################################################################################
def boundingRect(self):
"""
Returns the shape bounding rectangle.
:rtype: QRectF
"""
return self.selection
def painterPath(self):
"""
Returns the current shape as QPainterPath (used for collision detection).
:rtype: QPainterPath
"""
path = QPainterPath()
path.addRoundedRect(self.polygon, 8, 8)
return path
def shape(self):
"""
Returns the shape of this item as a QPainterPath in local coordinates.
:rtype: QPainterPath
"""
path = QPainterPath()
path.addRoundedRect(self.polygon, 8, 8)
return path
####################################################################################################################
# #
# LABEL SHORTCUTS #
# #
####################################################################################################################
def textPos(self):
"""
Returns the current label position in item coordinates.
:rtype: QPointF
"""
return self.label.pos()
def text(self):
"""
Returns the label text.
:rtype: str
"""
return self.label.text()
def setTextPos(self, pos):
"""
Set the label position.
:type pos: QPointF
"""
self.label.setPos(pos)
def setText(self, text):
"""
Set the label text.
:type text: str
"""
datatype = XsdDatatype.forValue(text) or XsdDatatype.string
self.label.setText(datatype.value)
self.updateLayout()
def updateTextPos(self, *args, **kwargs):
"""
Update the label position.
"""
self.label.updatePos(*args, **kwargs)
####################################################################################################################
# #
# DRAWING #
# #
####################################################################################################################
@classmethod
def image(cls, **kwargs):
"""
Returns an image suitable for the palette.
:rtype: QPixmap
"""
# INITIALIZATION
pixmap = QPixmap(kwargs['w'], kwargs['h'])
pixmap.fill(Qt.transparent)
painter = QPainter(pixmap)
rect = cls.createPolygon(54, 34)
# ITEM SHAPE
painter.setRenderHint(QPainter.Antialiasing)
painter.setPen(
QPen(QColor(0, 0, 0), 1.0, Qt.SolidLine, Qt.SquareCap,
Qt.RoundJoin))
painter.setBrush(QColor(252, 252, 252))
painter.translate(kwargs['w'] / 2, kwargs['h'] / 2)
painter.drawRoundedRect(rect, 6, 6)
# TEXT WITHIN THE SHAPE
painter.setFont(Font('Arial', 10, Font.Light))
painter.drawText(rect, Qt.AlignCenter, 'xsd:string')
return pixmap
def paint(self, painter, option, widget=None):
"""
Paint the node in the diagram scene.
:type painter: QPainter
:type option: QStyleOptionGraphicsItem
:type widget: QWidget
"""
# SET THE RECT THAT NEEDS TO BE REPAINTED
painter.setClipRect(option.exposedRect)
# SELECTION AREA
painter.setPen(self.selectionPen)
painter.setBrush(self.selectionBrush)
painter.drawRect(self.selection)
# SYNTAX VALIDATION
painter.setRenderHint(QPainter.Antialiasing)
painter.setPen(self.backgroundPen)
painter.setBrush(self.backgroundBrush)
painter.drawRoundedRect(self.background, 8, 8)
# SHAPE
painter.setBrush(self.brush)
painter.setPen(self.pen)
painter.drawRoundedRect(self.polygon, 8, 8)
class ConceptNode(AbstractResizableNode):
"""
This class implements the 'Concept' node.
"""
identities = {Identity.Concept}
item = Item.ConceptNode
minheight = 50
minwidth = 110
def __init__(self, width=minwidth, height=minheight, brush=None, **kwargs):
"""
Initialize the node.
:type width: int
:type height: int
:type brush: QBrush
"""
super().__init__(**kwargs)
w = max(width, self.minwidth)
h = max(height, self.minheight)
s = self.handleSize
self.brush = brush or QBrush(QColor(252, 252, 252))
self.pen = QPen(QColor(0, 0, 0), 1.0, Qt.SolidLine)
self.polygon = self.createPolygon(w, h)
self.background = self.createBackground(w + s, h + s)
self.selection = self.createSelection(w + s, h + s)
self.label = Label('concept', parent=self)
self.label.updatePos()
self.updateHandles()
####################################################################################################################
# #
# PROPERTIES #
# #
####################################################################################################################
@property
def identity(self):
"""
Returns the identity of the current node.
:rtype: Identity
"""
return Identity.Concept
@identity.setter
def identity(self, identity):
"""
Set the identity of the current node.
:type identity: Identity
"""
pass
@property
def special(self):
"""
Returns the special type of this node.
:rtype: Special
"""
return Special.forValue(self.text())
####################################################################################################################
# #
# INTERFACE #
# #
####################################################################################################################
def copy(self, scene):
"""
Create a copy of the current item.
:type scene: DiagramScene
"""
kwargs = {
'id': self.id,
'brush': self.brush,
'height': self.height(),
'width': self.width(),
}
node = scene.factory.create(item=self.item, scene=scene, **kwargs)
node.setPos(self.pos())
node.setText(self.text())
node.setTextPos(node.mapFromScene(self.mapToScene(self.textPos())))
return node
@staticmethod
def createBackground(width, height):
"""
Returns the initialized background polygon according to the given width/height.
:type width: int
:type height: int
:rtype: QRectF
"""
return QRectF(-width / 2, -height / 2, width, height)
@staticmethod
def createPolygon(width, height):
"""
Returns the initialized polygon according to the given width/height.
:type width: int
:type height: int
:rtype: QRectF
"""
return QRectF(-width / 2, -height / 2, width, height)
def height(self):
"""
Returns the height of the shape.
:rtype: int
"""
return self.polygon.height()
def interactiveResize(self, mousePos):
"""
Handle the interactive resize of the shape.
:type mousePos: QPointF
"""
scene = self.scene()
snap = scene.mainwindow.snapToGrid
size = scene.GridSize
offset = self.handleSize + self.handleMove
moved = self.label.moved
R = QRectF(self.boundingRect())
D = QPointF(0, 0)
minBoundW = self.minwidth + offset * 2
minBoundH = self.minheight + offset * 2
self.prepareGeometryChange()
if self.mousePressHandle == self.handleTL:
fromX = self.mousePressBound.left()
fromY = self.mousePressBound.top()
toX = fromX + mousePos.x() - self.mousePressPos.x()
toY = fromY + mousePos.y() - self.mousePressPos.y()
toX = snapF(toX, size, -offset, snap)
toY = snapF(toY, size, -offset, snap)
D.setX(toX - fromX)
D.setY(toY - fromY)
R.setLeft(toX)
R.setTop(toY)
## CLAMP SIZE
if R.width() < minBoundW:
D.setX(D.x() - minBoundW + R.width())
R.setLeft(R.left() - minBoundW + R.width())
if R.height() < minBoundH:
D.setY(D.y() - minBoundH + R.height())
R.setTop(R.top() - minBoundH + R.height())
self.background.setLeft(R.left())
self.background.setTop(R.top())
self.selection.setLeft(R.left())
self.selection.setTop(R.top())
self.polygon.setLeft(R.left() + offset)
self.polygon.setTop(R.top() + offset)
elif self.mousePressHandle == self.handleTM:
fromY = self.mousePressBound.top()
toY = fromY + mousePos.y() - self.mousePressPos.y()
toY = snapF(toY, size, -offset, snap)
D.setY(toY - fromY)
R.setTop(toY)
## CLAMP SIZE
if R.height() < minBoundH:
D.setY(D.y() - minBoundH + R.height())
R.setTop(R.top() - minBoundH + R.height())
self.background.setTop(R.top())
self.selection.setTop(R.top())
self.polygon.setTop(R.top() + offset)
elif self.mousePressHandle == self.handleTR:
fromX = self.mousePressBound.right()
fromY = self.mousePressBound.top()
toX = fromX + mousePos.x() - self.mousePressPos.x()
toY = fromY + mousePos.y() - self.mousePressPos.y()
toX = snapF(toX, size, +offset, snap)
toY = snapF(toY, size, -offset, snap)
D.setX(toX - fromX)
D.setY(toY - fromY)
R.setRight(toX)
R.setTop(toY)
## CLAMP SIZE
if R.width() < minBoundW:
D.setX(D.x() + minBoundW - R.width())
R.setRight(R.right() + minBoundW - R.width())
if R.height() < minBoundH:
D.setY(D.y() - minBoundH + R.height())
R.setTop(R.top() - minBoundH + R.height())
self.background.setRight(R.right())
self.background.setTop(R.top())
self.selection.setRight(R.right())
self.selection.setTop(R.top())
self.polygon.setRight(R.right() - offset)
self.polygon.setTop(R.top() + offset)
elif self.mousePressHandle == self.handleML:
fromX = self.mousePressBound.left()
toX = fromX + mousePos.x() - self.mousePressPos.x()
toX = snapF(toX, size, -offset, snap)
D.setX(toX - fromX)
R.setLeft(toX)
## CLAMP SIZE
if R.width() < minBoundW:
D.setX(D.x() - minBoundW + R.width())
R.setLeft(R.left() - minBoundW + R.width())
self.background.setLeft(R.left())
self.selection.setLeft(R.left())
self.polygon.setLeft(R.left() + offset)
elif self.mousePressHandle == self.handleMR:
fromX = self.mousePressBound.right()
toX = fromX + mousePos.x() - self.mousePressPos.x()
toX = snapF(toX, size, +offset, snap)
D.setX(toX - fromX)
R.setRight(toX)
## CLAMP SIZE
if R.width() < minBoundW:
D.setX(D.x() + minBoundW - R.width())
R.setRight(R.right() + minBoundW - R.width())
self.background.setRight(R.right())
self.selection.setRight(R.right())
self.polygon.setRight(R.right() - offset)
elif self.mousePressHandle == self.handleBL:
fromX = self.mousePressBound.left()
fromY = self.mousePressBound.bottom()
toX = fromX + mousePos.x() - self.mousePressPos.x()
toY = fromY + mousePos.y() - self.mousePressPos.y()
toX = snapF(toX, size, -offset, snap)
toY = snapF(toY, size, +offset, snap)
D.setX(toX - fromX)
D.setY(toY - fromY)
R.setLeft(toX)
R.setBottom(toY)
## CLAMP SIZE
if R.width() < minBoundW:
D.setX(D.x() - minBoundW + R.width())
R.setLeft(R.left() - minBoundW + R.width())
if R.height() < minBoundH:
D.setY(D.y() + minBoundH - R.height())
R.setBottom(R.bottom() + minBoundH - R.height())
self.background.setLeft(R.left())
self.background.setBottom(R.bottom())
self.selection.setLeft(R.left())
self.selection.setBottom(R.bottom())
self.polygon.setLeft(R.left() + offset)
self.polygon.setBottom(R.bottom() - offset)
elif self.mousePressHandle == self.handleBM:
fromY = self.mousePressBound.bottom()
toY = fromY + mousePos.y() - self.mousePressPos.y()
toY = snapF(toY, size, +offset, snap)
D.setY(toY - fromY)
R.setBottom(toY)
## CLAMP SIZE
if R.height() < minBoundH:
D.setY(D.y() + minBoundH - R.height())
R.setBottom(R.bottom() + minBoundH - R.height())
self.background.setBottom(R.bottom())
self.selection.setBottom(R.bottom())
self.polygon.setBottom(R.bottom() - offset)
elif self.mousePressHandle == self.handleBR:
fromX = self.mousePressBound.right()
fromY = self.mousePressBound.bottom()
toX = fromX + mousePos.x() - self.mousePressPos.x()
toY = fromY + mousePos.y() - self.mousePressPos.y()
toX = snapF(toX, size, +offset, snap)
toY = snapF(toY, size, +offset, snap)
D.setX(toX - fromX)
D.setY(toY - fromY)
R.setRight(toX)
R.setBottom(toY)
## CLAMP SIZE
if R.width() < minBoundW:
D.setX(D.x() + minBoundW - R.width())
R.setRight(R.right() + minBoundW - R.width())
if R.height() < minBoundH:
D.setY(D.y() + minBoundH - R.height())
R.setBottom(R.bottom() + minBoundH - R.height())
self.background.setRight(R.right())
self.background.setBottom(R.bottom())
self.selection.setRight(R.right())
self.selection.setBottom(R.bottom())
self.polygon.setRight(R.right() - offset)
self.polygon.setBottom(R.bottom() - offset)
self.updateHandles()
self.updateTextPos(moved=moved)
self.updateAnchors(self.mousePressData, D)
def width(self):
"""
Returns the width of the shape.
:rtype: int
"""
return self.polygon.width()
####################################################################################################################
# #
# GEOMETRY #
# #
####################################################################################################################
def boundingRect(self):
"""
Returns the shape bounding rectangle.
:rtype: QRectF
"""
return self.selection
def painterPath(self):
"""
Returns the current shape as QPainterPath (used for collision detection).
:rtype: QPainterPath
"""
path = QPainterPath()
path.addRect(self.polygon)
return path
def shape(self):
"""
Returns the shape of this item as a QPainterPath in local coordinates.
:rtype: QPainterPath
"""
path = QPainterPath()
path.addRect(self.polygon)
for shape in self.handleBound:
path.addEllipse(shape)
return path
####################################################################################################################
# #
# LABEL SHORTCUTS #
# #
####################################################################################################################
def textPos(self):
"""
Returns the current label position in item coordinates.
:rtype: QPointF
"""
return self.label.pos()
def text(self):
"""
Returns the label text.
:rtype: str
"""
return self.label.text()
def setTextPos(self, pos):
"""
Set the label position.
:type pos: QPointF
"""
self.label.setPos(pos)
def setText(self, text):
"""
Set the label text.
:type text: str
"""
self.label.editable = Special.forValue(text) is None
self.label.setText(text)
def updateTextPos(self, *args, **kwargs):
"""
Update the label position.
"""
self.label.updatePos(*args, **kwargs)
####################################################################################################################
# #
# DRAWING #
# #
####################################################################################################################
@classmethod
def image(cls, **kwargs):
"""
Returns an image suitable for the palette.
:rtype: QPixmap
"""
# INITIALIZATION
pixmap = QPixmap(kwargs['w'], kwargs['h'])
pixmap.fill(Qt.transparent)
painter = QPainter(pixmap)
rect = cls.createPolygon(54, 34)
# DRAW THE RECTANGLE
painter.setPen(QPen(QColor(0, 0, 0), 1.0, Qt.SolidLine))
painter.setBrush(QColor(252, 252, 252))
painter.translate(kwargs['w'] / 2, kwargs['h'] / 2)
painter.drawRect(rect)
# TEXT WITHIN THE RECTANGLE
painter.setFont(Font('Arial', 11, Font.Light))
painter.drawText(rect, Qt.AlignCenter, 'concept')
return pixmap
def paint(self, painter, option, widget=None):
"""
Paint the node in the diagram scene.
:type painter: QPainter
:type option: QStyleOptionGraphicsItem
:type widget: QWidget
"""
# SET THE RECT THAT NEEDS TO BE REPAINTED
painter.setClipRect(option.exposedRect)
# SELECTION AREA
painter.setPen(self.selectionPen)
painter.setBrush(self.selectionBrush)
painter.drawRect(self.selection)
# SYNTAX VALIDATION
painter.setPen(self.backgroundPen)
painter.setBrush(self.backgroundBrush)
painter.drawRect(self.background)
# ITEM SHAPE
painter.setPen(self.pen)
painter.setBrush(self.brush)
painter.drawRect(self.polygon)
# RESIZE HANDLES
painter.setRenderHint(QPainter.Antialiasing)
for i in range(self.handleNum):
painter.setBrush(self.handleBrush[i])
painter.setPen(self.handlePen[i])
painter.drawEllipse(self.handleBound[i])
class AttributeNode(AbstractNode):
"""
This class implements the 'Attribute' node.
"""
identities = {Identity.Attribute}
item = Item.AttributeNode
def __init__(self, width=20, height=20, brush=None, **kwargs):
"""
Initialize the node.
:type width: int
:type height: int
:type brush: QBrush
"""
super().__init__(**kwargs)
self.brush = brush or QBrush(QColor(252, 252, 252))
self.pen = QPen(QColor(0, 0, 0), 1.1, Qt.SolidLine)
self.polygon = self.createPolygon(20, 20)
self.background = self.createBackground(28, 28)
self.selection = self.createBackground(28, 28)
self.label = Label('attribute', centered=False, parent=self)
self.label.updatePos()
####################################################################################################################
# #
# PROPERTIES #
# #
####################################################################################################################
@property
def functional(self):
"""
Tells whether the Attribute is defined as functional.
:rtype: bool
"""
scene = self.scene()
meta = scene.meta.metaFor(self.item, self.text())
return meta.functionality
@functional.setter
def functional(self, value):
"""
Set the Attribute functionality property.
:type value: bool
"""
scene = self.scene()
meta = scene.meta.metaFor(self.item, self.text())
meta.functionality = bool(value)
scene.meta.add(self.item, self.text(), meta)
@property
def identity(self):
"""
Returns the identity of the current node.
:rtype: Identity
"""
return Identity.Attribute
@identity.setter
def identity(self, identity):
"""
Set the identity of the current node.
:type identity: Identity
"""
pass
@property
def special(self):
"""
Returns the special type of this node.
:rtype: Special
"""
return Special.forValue(self.text())
####################################################################################################################
# #
# INTERFACE #
# #
####################################################################################################################
def copy(self, scene):
"""
Create a copy of the current item.
:type scene: DiagramScene
"""
kwargs = {
'id': self.id,
'brush': self.brush,
'height': self.height(),
'width': self.width(),
}
node = scene.factory.create(item=self.item, scene=scene, **kwargs)
node.setPos(self.pos())
node.setText(self.text())
node.setTextPos(node.mapFromScene(self.mapToScene(self.textPos())))
return node
@staticmethod
def createBackground(width, height):
"""
Returns the initialized background polygon according to the given width/height.
:type width: int
:type height: int
:rtype: T QRectF
"""
return QRectF(-width / 2, -height / 2, width, height)
@staticmethod
def createPolygon(width, height):
"""
Returns the initialized polygon according to the given width/height.
:type width: int
:type height: int
:rtype: QRectF
"""
return QRectF(-width / 2, -height / 2, width, height)
def height(self):
"""
Returns the height of the shape.
:rtype: int
"""
return self.polygon.height()
def width(self):
"""
Returns the width of the shape.
:rtype: int
"""
return self.polygon.width()
####################################################################################################################
# #
# GEOMETRY #
# #
####################################################################################################################
def boundingRect(self):
"""
Returns the shape bounding rectangle.
:rtype: QRectF
"""
return self.selection
def painterPath(self):
"""
Returns the current shape as QPainterPath (used for collision detection).
:rtype: QPainterPath
"""
path = QPainterPath()
path.addEllipse(self.polygon)
return path
def shape(self):
"""
Returns the shape of this item as a QPainterPath in local coordinates.
:rtype: QPainterPath
"""
path = QPainterPath()
path.addEllipse(self.polygon)
return path
####################################################################################################################
# #
# LABEL SHORTCUTS #
# #
####################################################################################################################
def textPos(self):
"""
Returns the current label position in item coordinates.
:rtype: QPointF
"""
return self.label.pos()
def text(self):
"""
Returns the label text.
:rtype: str
"""
return self.label.text()
def setTextPos(self, pos):
"""
Set the label position.
:type pos: QPointF
"""
self.label.setPos(pos)
def setText(self, text):
"""
Set the label text.
:type text: str
"""
self.label.editable = Special.forValue(text) is None
self.label.setText(text)
def updateTextPos(self, *args, **kwargs):
"""
Update the label position.
"""
self.label.updatePos(*args, **kwargs)
####################################################################################################################
# #
# DRAWING #
# #
####################################################################################################################
@classmethod
def image(cls, **kwargs):
"""
Returns an image suitable for the palette.
:rtype: QPixmap
"""
# INITIALIZATION
pixmap = QPixmap(kwargs['w'], kwargs['h'])
pixmap.fill(Qt.transparent)
painter = QPainter(pixmap)
# TEXT
painter.setFont(Font('Arial', 9, Font.Light))
painter.translate(0, 0)
painter.drawText(QRectF(0, 0, kwargs['w'], kwargs['h'] / 2),
Qt.AlignCenter, 'attribute')
# ITEM SHAPE
painter.setRenderHint(QPainter.Antialiasing)
painter.setPen(QPen(QColor(0, 0, 0), 1.1, Qt.SolidLine))
painter.setBrush(QColor(252, 252, 252))
painter.translate(kwargs['w'] / 2, kwargs['h'] / 2 + 6)
painter.drawEllipse(cls.createPolygon(18, 18))
return pixmap
def paint(self, painter, option, widget=None):
"""
Paint the node in the diagram scene.
:type painter: QPainter
:type option: QStyleOptionGraphicsItem
:type widget: QWidget
"""
# SET THE RECT THAT NEEDS TO BE REPAINTED
painter.setClipRect(option.exposedRect)
# SELECTION AREA
painter.setPen(self.selectionPen)
painter.setBrush(self.selectionBrush)
painter.drawRect(self.selection)
# SYNTAX VALIDATION
painter.setRenderHint(QPainter.Antialiasing)
painter.setPen(self.backgroundPen)
painter.setBrush(self.backgroundBrush)
painter.drawEllipse(self.background)
# ITEM SHAPE
painter.setPen(self.pen)
painter.setBrush(self.brush)
painter.drawEllipse(self.polygon)
class RestrictionNode(AbstractNode):
"""
This is the base class for all the Restriction nodes.
"""
__metaclass__ = ABCMeta
def __init__(self, width=20, height=20, brush=None, **kwargs):
"""
Initialize the node.
:type width: int
:type height: int
:type brush: QBrush
"""
super().__init__(**kwargs)
self.brush = brush or QBrush(QColor(252, 252, 252))
self.pen = QPen(QColor(0, 0, 0), 1.0, Qt.SolidLine)
self.polygon = self.createPolygon(20, 20)
self.background = self.createBackground(28, 28)
self.selection = self.createSelection(28, 28)
self.label = Label(Restriction.Exists.label, centered=False, editable=False, parent=self)
self.label.updatePos()
####################################################################################################################
# #
# PROPERTIES #
# #
####################################################################################################################
@property
def identity(self):
"""
Returns the identity of the current node.
:rtype: Identity
"""
return Identity.Concept
@identity.setter
def identity(self, identity):
"""
Set the identity of the current node.
:type identity: Identity
"""
pass
@property
def cardinality(self):
"""
Returns the cardinality of the node.
:rtype: dict
"""
cardinality = {'min': None, 'max': None}
match = RE_CARDINALITY.match(self.text())
if match:
if match.group('min') != '-':
cardinality['min'] = int(match.group('min'))
if match.group('max') != '-':
cardinality['max'] = int(match.group('max'))
return cardinality
@property
def restriction(self):
"""
Returns the restriction type of the node.
:rtype: Restriction
"""
return Restriction.forLabel(self.text())
####################################################################################################################
# #
# INTERFACE #
# #
####################################################################################################################
def copy(self, scene):
"""
Create a copy of the current item.
:type scene: DiagramScene
"""
kwargs = {
'id': self.id,
'height': self.height(),
'width': self.width(),
}
node = scene.factory.create(item=self.item, scene=scene, **kwargs)
node.setPos(self.pos())
node.setText(self.text())
node.setTextPos(node.mapFromScene(self.mapToScene(self.textPos())))
return node
@staticmethod
def createBackground(width, height):
"""
Returns the initialized background polygon according to the given width/height.
:type width: int
:type height: int
:rtype: QRectF
"""
return QRectF(-width / 2, -height / 2, width, height)
@staticmethod
def createPolygon(width, height):
"""
Returns the initialized polygon according to the given width/height.
:type width: int
:type height: int
:rtype: QRectF
"""
return QRectF(-width / 2, -height / 2, width, height)
def height(self):
"""
Returns the height of the shape.
:rtype: int
"""
return self.polygon.height()
def width(self):
"""
Returns the width of the shape.
:rtype: int
"""
return self.polygon.width()
####################################################################################################################
# #
# GEOMETRY #
# #
####################################################################################################################
def boundingRect(self):
"""
Returns the shape bounding rectangle.
:rtype: QRectF
"""
return self.selection
def painterPath(self):
"""
Returns the current shape as QPainterPath (used for collision detection).
:rtype: QPainterPath
"""
path = QPainterPath()
path.addRect(self.polygon)
return path
def shape(self, *args, **kwargs):
"""
Returns the shape of this item as a QPainterPath in local coordinates.
:rtype: QPainterPath
"""
path = QPainterPath()
path.addRect(self.polygon)
return path
####################################################################################################################
# #
# LABEL SHORTCUTS #
# #
####################################################################################################################
def textPos(self):
"""
Returns the current label position.
:rtype: QPointF
"""
return self.label.pos()
def text(self):
"""
Returns the label text.
:rtype: str
"""
return self.label.text()
def setTextPos(self, pos):
"""
Set the label position.
:type pos: QPointF
"""
self.label.setPos(pos)
def setText(self, text):
"""
Set the label text: will additionally parse the given value checking for a consistent restriction type.
:type text: str
"""
restriction = Restriction.forLabel(text)
if not restriction:
text = Restriction.Exists.label
self.label.setText(text)
def updateTextPos(self, *args, **kwargs):
"""
Update the label position.
"""
self.label.updatePos(*args, **kwargs)
####################################################################################################################
# #
# DRAWING #
# #
####################################################################################################################
@classmethod
@abstractmethod
def image(cls, **kwargs):
"""
Returns an image suitable for the palette.
:rtype: QPixmap
"""
pass
def paint(self, painter, option, widget=None):
"""
Paint the node in the diagram scene.
:type painter: QPainter
:type option: QStyleOptionGraphicsItem
:type widget: QWidget
"""
# SELECTION AREA
painter.setPen(self.selectionPen)
painter.setBrush(self.selectionBrush)
painter.drawRect(self.selection)
# SYNTAX VALIDATION
painter.setPen(self.backgroundPen)
painter.setBrush(self.backgroundBrush)
painter.drawRect(self.background)
# SHAPE
painter.setPen(self.pen)
painter.setBrush(self.brush)
painter.drawRect(self.polygon)
class AttributeNode(AbstractNode):
"""
This class implements the 'Attribute' node.
"""
identities = {Identity.Attribute}
item = Item.AttributeNode
def __init__(self, width=20, height=20, brush=None, **kwargs):
"""
Initialize the node.
:type width: int
:type height: int
:type brush: QBrush
"""
super().__init__(**kwargs)
self.brush = brush or QBrush(QColor(252, 252, 252))
self.pen = QPen(QColor(0, 0, 0), 1.1, Qt.SolidLine)
self.polygon = self.createPolygon(20, 20)
self.background = self.createBackground(28, 28)
self.selection = self.createBackground(28, 28)
self.label = Label('attribute', centered=False, parent=self)
self.label.updatePos()
####################################################################################################################
# #
# PROPERTIES #
# #
####################################################################################################################
@property
def functional(self):
"""
Tells whether the Attribute is defined as functional.
:rtype: bool
"""
scene = self.scene()
meta = scene.meta.metaFor(self.item, self.text())
return meta.functionality
@functional.setter
def functional(self, value):
"""
Set the Attribute functionality property.
:type value: bool
"""
scene = self.scene()
meta = scene.meta.metaFor(self.item, self.text())
meta.functionality = bool(value)
scene.meta.add(self.item, self.text(), meta)
@property
def identity(self):
"""
Returns the identity of the current node.
:rtype: Identity
"""
return Identity.Attribute
@identity.setter
def identity(self, identity):
"""
Set the identity of the current node.
:type identity: Identity
"""
pass
@property
def special(self):
"""
Returns the special type of this node.
:rtype: Special
"""
return Special.forValue(self.text())
####################################################################################################################
# #
# INTERFACE #
# #
####################################################################################################################
def copy(self, scene):
"""
Create a copy of the current item.
:type scene: DiagramScene
"""
kwargs = {
'id': self.id,
'brush': self.brush,
'height': self.height(),
'width': self.width(),
}
node = scene.factory.create(item=self.item, scene=scene, **kwargs)
node.setPos(self.pos())
node.setText(self.text())
node.setTextPos(node.mapFromScene(self.mapToScene(self.textPos())))
return node
@staticmethod
def createBackground(width, height):
"""
Returns the initialized background polygon according to the given width/height.
:type width: int
:type height: int
:rtype: T QRectF
"""
return QRectF(-width / 2, -height / 2, width, height)
@staticmethod
def createPolygon(width, height):
"""
Returns the initialized polygon according to the given width/height.
:type width: int
:type height: int
:rtype: QRectF
"""
return QRectF(-width / 2, -height / 2, width, height)
def height(self):
"""
Returns the height of the shape.
:rtype: int
"""
return self.polygon.height()
def width(self):
"""
Returns the width of the shape.
:rtype: int
"""
return self.polygon.width()
####################################################################################################################
# #
# GEOMETRY #
# #
####################################################################################################################
def boundingRect(self):
"""
Returns the shape bounding rectangle.
:rtype: QRectF
"""
return self.selection
def painterPath(self):
"""
Returns the current shape as QPainterPath (used for collision detection).
:rtype: QPainterPath
"""
path = QPainterPath()
path.addEllipse(self.polygon)
return path
def shape(self):
"""
Returns the shape of this item as a QPainterPath in local coordinates.
:rtype: QPainterPath
"""
path = QPainterPath()
path.addEllipse(self.polygon)
return path
####################################################################################################################
# #
# LABEL SHORTCUTS #
# #
####################################################################################################################
def textPos(self):
"""
Returns the current label position in item coordinates.
:rtype: QPointF
"""
return self.label.pos()
def text(self):
"""
Returns the label text.
:rtype: str
"""
return self.label.text()
def setTextPos(self, pos):
"""
Set the label position.
:type pos: QPointF
"""
self.label.setPos(pos)
def setText(self, text):
"""
Set the label text.
:type text: str
"""
self.label.editable = Special.forValue(text) is None
self.label.setText(text)
def updateTextPos(self, *args, **kwargs):
"""
Update the label position.
"""
self.label.updatePos(*args, **kwargs)
####################################################################################################################
# #
# DRAWING #
# #
####################################################################################################################
@classmethod
def image(cls, **kwargs):
"""
Returns an image suitable for the palette.
:rtype: QPixmap
"""
# INITIALIZATION
pixmap = QPixmap(kwargs['w'], kwargs['h'])
pixmap.fill(Qt.transparent)
painter = QPainter(pixmap)
# TEXT
painter.setFont(Font('Arial', 9, Font.Light))
painter.translate(0, 0)
painter.drawText(QRectF(0, 0, kwargs['w'], kwargs['h'] / 2), Qt.AlignCenter, 'attribute')
# ITEM SHAPE
painter.setRenderHint(QPainter.Antialiasing)
painter.setPen(QPen(QColor(0, 0, 0), 1.1, Qt.SolidLine))
painter.setBrush(QColor(252, 252, 252))
painter.translate(kwargs['w'] / 2, kwargs['h'] / 2 + 6)
painter.drawEllipse(cls.createPolygon(18, 18))
return pixmap
def paint(self, painter, option, widget=None):
"""
Paint the node in the diagram scene.
:type painter: QPainter
:type option: QStyleOptionGraphicsItem
:type widget: QWidget
"""
# SET THE RECT THAT NEEDS TO BE REPAINTED
painter.setClipRect(option.exposedRect)
# SELECTION AREA
painter.setPen(self.selectionPen)
painter.setBrush(self.selectionBrush)
painter.drawRect(self.selection)
# SYNTAX VALIDATION
painter.setRenderHint(QPainter.Antialiasing)
painter.setPen(self.backgroundPen)
painter.setBrush(self.backgroundBrush)
painter.drawEllipse(self.background)
# ITEM SHAPE
painter.setPen(self.pen)
painter.setBrush(self.brush)
painter.drawEllipse(self.polygon)
class ValueDomainNode(AbstractNode):
"""
This class implements the 'Value-Domain' node.
"""
identities = {Identity.ValueDomain}
item = Item.ValueDomainNode
minheight = 40
minwidth = 90
def __init__(self, width=minwidth, height=minheight, brush=None, **kwargs):
"""
Initialize the Value-Domain node.
:type width: int
:type height: int
:type brush: QBrush
"""
super().__init__(**kwargs)
self.brush = brush or QBrush(QColor(252, 252, 252))
self.pen = QPen(QColor(0, 0, 0), 1.0, Qt.SolidLine)
self.polygon = self.createPolygon(self.minwidth, self.minheight)
self.background = self.createBackground(self.minwidth + 8, self.minheight + 8)
self.selection = self.createSelection(self.minwidth + 8, self.minheight + 8)
self.label = Label('xsd:string', movable=False, editable=False, parent=self)
self.updateLayout()
####################################################################################################################
# #
# PROPERTIES #
# #
####################################################################################################################
@property
def datatype(self):
"""
Returns the datatype associated with this node.
:rtype: XsdDatatype
"""
return XsdDatatype.forValue(self.text())
@property
def identity(self):
"""
Returns the identity of the current node.
:rtype: Identity
"""
return Identity.ValueDomain
@identity.setter
def identity(self, identity):
"""
Set the identity of the current node.
:type identity: Identity
"""
pass
####################################################################################################################
# #
# INTERFACE #
# #
####################################################################################################################
def copy(self, scene):
"""
Create a copy of the current item.
:type scene: DiagramScene
"""
kwargs = {
'id': self.id,
'brush': self.brush,
'height': self.height(),
'width': self.width(),
}
node = scene.factory.create(item=self.item, scene=scene, **kwargs)
node.setPos(self.pos())
node.setText(self.text())
node.setTextPos(node.mapFromScene(self.mapToScene(self.textPos())))
return node
@staticmethod
def createBackground(width, height):
"""
Returns the initialized background polygon according to the given width/height.
:type width: int
:type height: int
:rtype: QRectF
"""
return QRectF(-width / 2, -height / 2, width, height)
@staticmethod
def createPolygon(width, height):
"""
Returns the initialized polygon according to the given width/height.
:type width: int
:type height: int
:rtype: QRectF
"""
return QRectF(-width / 2, -height / 2, width, height)
def height(self):
"""
Returns the height of the shape.
:rtype: int
"""
return self.polygon.height()
def updateLayout(self):
"""
Update current shape rect according to the selected datatype.
"""
width = max(self.label.width() + 16, self.minwidth)
self.polygon = self.createPolygon(width, self.minheight)
self.background = self.createBackground(width + 8, self.minheight + 8)
self.selection = self.createSelection(width + 8, self.minheight + 8)
self.updateTextPos()
self.updateEdges()
def width(self):
"""
Returns the width of the shape.
:rtype: int
"""
return self.polygon.width()
####################################################################################################################
# #
# GEOMETRY #
# #
####################################################################################################################
def boundingRect(self):
"""
Returns the shape bounding rectangle.
:rtype: QRectF
"""
return self.selection
def painterPath(self):
"""
Returns the current shape as QPainterPath (used for collision detection).
:rtype: QPainterPath
"""
path = QPainterPath()
path.addRoundedRect(self.polygon, 8, 8)
return path
def shape(self):
"""
Returns the shape of this item as a QPainterPath in local coordinates.
:rtype: QPainterPath
"""
path = QPainterPath()
path.addRoundedRect(self.polygon, 8, 8)
return path
####################################################################################################################
# #
# LABEL SHORTCUTS #
# #
####################################################################################################################
def textPos(self):
"""
Returns the current label position in item coordinates.
:rtype: QPointF
"""
return self.label.pos()
def text(self):
"""
Returns the label text.
:rtype: str
"""
return self.label.text()
def setTextPos(self, pos):
"""
Set the label position.
:type pos: QPointF
"""
self.label.setPos(pos)
def setText(self, text):
"""
Set the label text.
:type text: str
"""
datatype = XsdDatatype.forValue(text) or XsdDatatype.string
self.label.setText(datatype.value)
self.updateLayout()
def updateTextPos(self, *args, **kwargs):
"""
Update the label position.
"""
self.label.updatePos(*args, **kwargs)
####################################################################################################################
# #
# DRAWING #
# #
####################################################################################################################
@classmethod
def image(cls, **kwargs):
"""
Returns an image suitable for the palette.
:rtype: QPixmap
"""
# INITIALIZATION
pixmap = QPixmap(kwargs['w'], kwargs['h'])
pixmap.fill(Qt.transparent)
painter = QPainter(pixmap)
rect = cls.createPolygon(54, 34)
# ITEM SHAPE
painter.setRenderHint(QPainter.Antialiasing)
painter.setPen(QPen(QColor(0, 0, 0), 1.0, Qt.SolidLine, Qt.SquareCap, Qt.RoundJoin))
painter.setBrush(QColor(252, 252, 252))
painter.translate(kwargs['w'] / 2, kwargs['h'] / 2)
painter.drawRoundedRect(rect, 6, 6)
# TEXT WITHIN THE SHAPE
painter.setFont(Font('Arial', 10, Font.Light))
painter.drawText(rect, Qt.AlignCenter, 'xsd:string')
return pixmap
def paint(self, painter, option, widget=None):
"""
Paint the node in the diagram scene.
:type painter: QPainter
:type option: QStyleOptionGraphicsItem
:type widget: QWidget
"""
# SET THE RECT THAT NEEDS TO BE REPAINTED
painter.setClipRect(option.exposedRect)
# SELECTION AREA
painter.setPen(self.selectionPen)
painter.setBrush(self.selectionBrush)
painter.drawRect(self.selection)
# SYNTAX VALIDATION
painter.setRenderHint(QPainter.Antialiasing)
painter.setPen(self.backgroundPen)
painter.setBrush(self.backgroundBrush)
painter.drawRoundedRect(self.background, 8, 8)
# SHAPE
painter.setBrush(self.brush)
painter.setPen(self.pen)
painter.drawRoundedRect(self.polygon, 8, 8)
class ValueRestrictionNode(AbstractNode):
"""
This class implements the 'Value-Restriction' node.
"""
indexTR = 0
indexTL = 1
indexBL = 2
indexBR = 3
indexRT = 4
indexEE = 5
identities = {Identity.ValueDomain}
item = Item.ValueRestrictionNode
minheight = 50
minwidth = 180
def __init__(self, width=minwidth, height=minheight, brush=None, **kwargs):
"""
Initialize the node.
:type width: int
:type height: int
:type brush: QBrush
"""
super().__init__(**kwargs)
self.brush = brush or QBrush(QColor(252, 252, 252))
self.pen = QPen(QColor(0, 0, 0), 1.0, Qt.SolidLine)
self.polygon = self.createPolygon(self.minwidth, self.minheight)
self.fold = self.createFold(self.polygon, self.indexTR, self.indexRT)
self.background = self.createBackground(self.minwidth + 8,
self.minheight + 8)
self.selection = self.createSelection(self.minwidth + 8,
self.minheight + 8)
self.label = Label('xsd:length "32"^^xsd:string',
movable=False,
editable=False,
parent=self)
self.updateLayout()
####################################################################################################################
# #
# PROPERTIES #
# #
####################################################################################################################
@property
def constrained(self):
"""
Tells whether the datatype of this restriction is constrained by graph composition.
:rtype: bool
"""
f1 = lambda x: x.isItem(Item.InputEdge)
f2 = lambda x: x.isItem(Item.DatatypeRestrictionNode)
f3 = lambda x: x.isItem(Item.ValueDomainNode)
x = first(self.outgoingNodes(filter_on_edges=f1, filter_on_nodes=f2))
if x:
return first(
x.incomingNodes(filter_on_edges=f1,
filter_on_nodes=f3)) is not None
return False
@property
def datatype(self):
"""
Returns the datatype associated with this node.
:rtype: XsdDatatype
"""
match = RE_FACET.match(self.text())
if match:
return XsdDatatype.forValue(match.group('datatype'))
return None
@property
def facet(self):
"""
Returns the facet associated with this node.
:rtype: Facet
"""
match = RE_FACET.match(self.text())
if match:
return Facet.forValue(match.group('facet'))
return None
@property
def identity(self):
"""
Returns the identity of the current node.
:rtype: Identity
"""
return Identity.ValueDomain
@identity.setter
def identity(self, identity):
"""
Set the identity of the current node.
:type identity: Identity
"""
pass
@property
def value(self):
"""
Returns the value of the restriction.
:rtype: str
"""
match = RE_FACET.match(self.text())
if match:
return match.group('value')
return ''
####################################################################################################################
# #
# INTERFACE #
# #
####################################################################################################################
@staticmethod
def compose(facet, value, datatype):
"""
Compose the restriction string.
:type facet: Facet
:type value: str
:type datatype: XsdDatatype
:return: str
"""
return '{} "{}"^^{}'.format(facet.value,
cutR(cutL(value.strip(), '"'), '"'),
datatype.value)
def copy(self, scene):
"""
Create a copy of the current item.
:type scene: DiagramScene
"""
kwargs = {
'id': self.id,
'brush': self.brush,
'height': self.height(),
'width': self.width(),
}
node = scene.factory.create(item=self.item, scene=scene, **kwargs)
node.setPos(self.pos())
node.setText(self.text())
node.setTextPos(node.mapFromScene(self.mapToScene(self.textPos())))
return node
@staticmethod
def createBackground(width, height):
"""
Returns the initialized background polygon according to the given width/height.
:type width: int
:type height: int
:rtype: QRectF
"""
return QRectF(-width / 2, -height / 2, width, height)
@staticmethod
def createFold(polygon, indexTR, indexRT):
"""
Returns the initialized fold polygon.
:type polygon: QPolygonF
:type indexTR: int
:type indexRT: int
:rtype: QPolygonF
"""
return QPolygonF([
QPointF(polygon[indexTR].x(), polygon[indexTR].y()),
QPointF(polygon[indexTR].x(), polygon[indexTR].y() + 12),
QPointF(polygon[indexRT].x(), polygon[indexRT].y()),
QPointF(polygon[indexTR].x(), polygon[indexTR].y()),
])
@staticmethod
def createPolygon(width, height):
"""
Returns the initialized polygon according to the given width/height.
:type width: int
:type height: int
:rtype: QPolygonF
"""
return QPolygonF([
QPointF(+(width / 2) - 12, -(height / 2)), # 0
QPointF(-(width / 2), -(height / 2)), # 1
QPointF(-(width / 2), +(height / 2)), # 2
QPointF(+(width / 2), +(height / 2)), # 3
QPointF(+(width / 2), -(height / 2) + 12), # 4
QPointF(+(width / 2) - 12, -(height / 2)), # 5
])
def height(self):
"""
Returns the height of the shape.
:rtype: int
"""
return self.polygon[self.indexBL].y() - self.polygon[self.indexTL].y()
def updateLayout(self):
"""
Update current shape rect according to the selected datatype.
"""
width = max(self.label.width() + 16, self.minwidth)
self.polygon = self.createPolygon(width, self.minheight)
self.fold = self.createFold(self.polygon, self.indexTR, self.indexRT)
self.background = self.createBackground(width + 8, self.minheight + 8)
self.selection = self.createSelection(width + 8, self.minheight + 8)
self.updateTextPos()
self.updateEdges()
def width(self):
"""
Returns the width of the shape.
:rtype: int
"""
return self.polygon[self.indexBR].x() - self.polygon[self.indexBL].x()
####################################################################################################################
# #
# GEOMETRY #
# #
####################################################################################################################
def boundingRect(self):
"""
Returns the shape bounding rectangle.
:rtype: QRectF
"""
return self.selection
def painterPath(self):
"""
Returns the current shape as QPainterPath (used for collision detection).
:rtype: QPainterPath
"""
path = QPainterPath()
path.addPolygon(self.polygon)
return path
def shape(self):
"""
Returns the shape of this item as a QPainterPath in local coordinates.
:rtype: QPainterPath
"""
path = QPainterPath()
path.addPolygon(self.polygon)
return path
####################################################################################################################
# #
# LABEL SHORTCUTS #
# #
####################################################################################################################
def textPos(self):
"""
Returns the current label position in item coordinates.
:rtype: QPointF
"""
return self.label.pos()
def text(self):
"""
Returns the label text.
:rtype: str
"""
return self.label.text()
def setTextPos(self, pos):
"""
Set the label position.
:type pos: QPointF
"""
self.label.setPos(pos)
def setText(self, text):
"""
Set the label text.
:type text: str
"""
self.label.setText(text)
self.updateLayout()
def updateTextPos(self, *args, **kwargs):
"""
Update the label position.
"""
self.label.updatePos(*args, **kwargs)
####################################################################################################################
# #
# DRAWING #
# #
####################################################################################################################
@classmethod
def image(cls, **kwargs):
"""
Returns an image suitable for the palette.
:rtype: QPixmap
"""
# INITIALIZATION
pixmap = QPixmap(kwargs['w'], kwargs['h'])
pixmap.fill(Qt.transparent)
painter = QPainter(pixmap)
polygon = QPolygonF([
QPointF(+27 - 10, -17), # 0
QPointF(-27, -17), # 1
QPointF(-27, +17), # 2
QPointF(+27, +17), # 3
QPointF(+27, -17 + 10), # 4
QPointF(+27 - 10, -17), # 5
])
fold = QPolygonF([
QPointF(polygon[cls.indexTR].x(), polygon[cls.indexTR].y()),
QPointF(polygon[cls.indexTR].x(), polygon[cls.indexTR].y() + 10),
QPointF(polygon[cls.indexRT].x(), polygon[cls.indexRT].y()),
QPointF(polygon[cls.indexTR].x(), polygon[cls.indexTR].y()),
])
# ITEM SHAPE
painter.setPen(QPen(QColor(0, 0, 0), 1.0, Qt.SolidLine))
painter.setBrush(QColor(252, 252, 252))
painter.translate(kwargs['w'] / 2, kwargs['h'] / 2)
painter.drawPolygon(polygon)
painter.drawPolygon(fold)
# TEXT WITHIN THE SHAPE
painter.setFont(Font('Arial', 10, Font.Light))
painter.drawText(polygon.boundingRect(), Qt.AlignCenter,
'value\nrestriction')
return pixmap
def paint(self, painter, option, widget=None):
"""
Paint the node in the diagram scene.
:type painter: QPainter
:type option: QStyleOptionGraphicsItem
:type widget: QWidget
"""
# SET THE RECT THAT NEEDS TO BE REPAINTED
painter.setClipRect(option.exposedRect)
# SELECTION AREA
painter.setPen(self.selectionPen)
painter.setBrush(self.selectionBrush)
painter.drawRect(self.selection)
# SYNTAX VALIDATION
painter.setRenderHint(QPainter.Antialiasing)
painter.setPen(self.backgroundPen)
painter.setBrush(self.backgroundBrush)
painter.drawRect(self.background)
# SHAPE
painter.setPen(self.pen)
painter.setBrush(self.brush)
painter.drawPolygon(self.polygon)
painter.drawPolygon(self.fold)
class ValueRestrictionNode(AbstractNode):
"""
This class implements the 'Value-Restriction' node.
"""
indexTR = 0
indexTL = 1
indexBL = 2
indexBR = 3
indexRT = 4
indexEE = 5
identities = {Identity.ValueDomain}
item = Item.ValueRestrictionNode
minheight = 50
minwidth = 180
def __init__(self, width=minwidth, height=minheight, brush=None, **kwargs):
"""
Initialize the node.
:type width: int
:type height: int
:type brush: QBrush
"""
super().__init__(**kwargs)
self.brush = brush or QBrush(QColor(252, 252, 252))
self.pen = QPen(QColor(0, 0, 0), 1.0, Qt.SolidLine)
self.polygon = self.createPolygon(self.minwidth, self.minheight)
self.fold = self.createFold(self.polygon, self.indexTR, self.indexRT)
self.background = self.createBackground(self.minwidth + 8, self.minheight + 8)
self.selection = self.createSelection(self.minwidth + 8, self.minheight + 8)
self.label = Label('xsd:length "32"^^xsd:string', movable=False, editable=False, parent=self)
self.updateLayout()
####################################################################################################################
# #
# PROPERTIES #
# #
####################################################################################################################
@property
def constrained(self):
"""
Tells whether the datatype of this restriction is constrained by graph composition.
:rtype: bool
"""
f1 = lambda x: x.isItem(Item.InputEdge)
f2 = lambda x: x.isItem(Item.DatatypeRestrictionNode)
f3 = lambda x: x.isItem(Item.ValueDomainNode)
x = first(self.outgoingNodes(filter_on_edges=f1, filter_on_nodes=f2))
if x:
return first(x.incomingNodes(filter_on_edges=f1, filter_on_nodes=f3)) is not None
return False
@property
def datatype(self):
"""
Returns the datatype associated with this node.
:rtype: XsdDatatype
"""
match = RE_FACET.match(self.text())
if match:
return XsdDatatype.forValue(match.group('datatype'))
return None
@property
def facet(self):
"""
Returns the facet associated with this node.
:rtype: Facet
"""
match = RE_FACET.match(self.text())
if match:
return Facet.forValue(match.group('facet'))
return None
@property
def identity(self):
"""
Returns the identity of the current node.
:rtype: Identity
"""
return Identity.ValueDomain
@identity.setter
def identity(self, identity):
"""
Set the identity of the current node.
:type identity: Identity
"""
pass
@property
def value(self):
"""
Returns the value of the restriction.
:rtype: str
"""
match = RE_FACET.match(self.text())
if match:
return match.group('value')
return ''
####################################################################################################################
# #
# INTERFACE #
# #
####################################################################################################################
@staticmethod
def compose(facet, value, datatype):
"""
Compose the restriction string.
:type facet: Facet
:type value: str
:type datatype: XsdDatatype
:return: str
"""
return '{} "{}"^^{}'.format(facet.value, cutR(cutL(value.strip(), '"'), '"'), datatype.value)
def copy(self, scene):
"""
Create a copy of the current item.
:type scene: DiagramScene
"""
kwargs = {
'id': self.id,
'brush': self.brush,
'height': self.height(),
'width': self.width(),
}
node = scene.factory.create(item=self.item, scene=scene, **kwargs)
node.setPos(self.pos())
node.setText(self.text())
node.setTextPos(node.mapFromScene(self.mapToScene(self.textPos())))
return node
@staticmethod
def createBackground(width, height):
"""
Returns the initialized background polygon according to the given width/height.
:type width: int
:type height: int
:rtype: QRectF
"""
return QRectF(-width / 2, -height / 2, width, height)
@staticmethod
def createFold(polygon, indexTR, indexRT):
"""
Returns the initialized fold polygon.
:type polygon: QPolygonF
:type indexTR: int
:type indexRT: int
:rtype: QPolygonF
"""
return QPolygonF([
QPointF(polygon[indexTR].x(), polygon[indexTR].y()),
QPointF(polygon[indexTR].x(), polygon[indexTR].y() + 12),
QPointF(polygon[indexRT].x(), polygon[indexRT].y()),
QPointF(polygon[indexTR].x(), polygon[indexTR].y()),
])
@staticmethod
def createPolygon(width, height):
"""
Returns the initialized polygon according to the given width/height.
:type width: int
:type height: int
:rtype: QPolygonF
"""
return QPolygonF([
QPointF(+(width / 2) - 12, -(height / 2)), # 0
QPointF(-(width / 2), -(height / 2)), # 1
QPointF(-(width / 2), +(height / 2)), # 2
QPointF(+(width / 2), +(height / 2)), # 3
QPointF(+(width / 2), -(height / 2) + 12), # 4
QPointF(+(width / 2) - 12, -(height / 2)), # 5
])
def height(self):
"""
Returns the height of the shape.
:rtype: int
"""
return self.polygon[self.indexBL].y() - self.polygon[self.indexTL].y()
def updateLayout(self):
"""
Update current shape rect according to the selected datatype.
"""
width = max(self.label.width() + 16, self.minwidth)
self.polygon = self.createPolygon(width, self.minheight)
self.fold = self.createFold(self.polygon, self.indexTR, self.indexRT)
self.background = self.createBackground(width + 8, self.minheight + 8)
self.selection = self.createSelection(width + 8, self.minheight + 8)
self.updateTextPos()
self.updateEdges()
def width(self):
"""
Returns the width of the shape.
:rtype: int
"""
return self.polygon[self.indexBR].x() - self.polygon[self.indexBL].x()
####################################################################################################################
# #
# GEOMETRY #
# #
####################################################################################################################
def boundingRect(self):
"""
Returns the shape bounding rectangle.
:rtype: QRectF
"""
return self.selection
def painterPath(self):
"""
Returns the current shape as QPainterPath (used for collision detection).
:rtype: QPainterPath
"""
path = QPainterPath()
path.addPolygon(self.polygon)
return path
def shape(self):
"""
Returns the shape of this item as a QPainterPath in local coordinates.
:rtype: QPainterPath
"""
path = QPainterPath()
path.addPolygon(self.polygon)
return path
####################################################################################################################
# #
# LABEL SHORTCUTS #
# #
####################################################################################################################
def textPos(self):
"""
Returns the current label position in item coordinates.
:rtype: QPointF
"""
return self.label.pos()
def text(self):
"""
Returns the label text.
:rtype: str
"""
return self.label.text()
def setTextPos(self, pos):
"""
Set the label position.
:type pos: QPointF
"""
self.label.setPos(pos)
def setText(self, text):
"""
Set the label text.
:type text: str
"""
self.label.setText(text)
self.updateLayout()
def updateTextPos(self, *args, **kwargs):
"""
Update the label position.
"""
self.label.updatePos(*args, **kwargs)
####################################################################################################################
# #
# DRAWING #
# #
####################################################################################################################
@classmethod
def image(cls, **kwargs):
"""
Returns an image suitable for the palette.
:rtype: QPixmap
"""
# INITIALIZATION
pixmap = QPixmap(kwargs['w'], kwargs['h'])
pixmap.fill(Qt.transparent)
painter = QPainter(pixmap)
polygon = QPolygonF([
QPointF(+27 - 10, -17), # 0
QPointF(-27, -17), # 1
QPointF(-27, +17), # 2
QPointF(+27, +17), # 3
QPointF(+27, -17 + 10), # 4
QPointF(+27 - 10, -17), # 5
])
fold = QPolygonF([
QPointF(polygon[cls.indexTR].x(), polygon[cls.indexTR].y()),
QPointF(polygon[cls.indexTR].x(), polygon[cls.indexTR].y() + 10),
QPointF(polygon[cls.indexRT].x(), polygon[cls.indexRT].y()),
QPointF(polygon[cls.indexTR].x(), polygon[cls.indexTR].y()),
])
# ITEM SHAPE
painter.setPen(QPen(QColor(0, 0, 0), 1.0, Qt.SolidLine))
painter.setBrush(QColor(252, 252, 252))
painter.translate(kwargs['w'] / 2, kwargs['h'] / 2)
painter.drawPolygon(polygon)
painter.drawPolygon(fold)
# TEXT WITHIN THE SHAPE
painter.setFont(Font('Arial', 10, Font.Light))
painter.drawText(polygon.boundingRect(), Qt.AlignCenter, 'value\nrestriction')
return pixmap
def paint(self, painter, option, widget=None):
"""
Paint the node in the diagram scene.
:type painter: QPainter
:type option: QStyleOptionGraphicsItem
:type widget: QWidget
"""
# SET THE RECT THAT NEEDS TO BE REPAINTED
painter.setClipRect(option.exposedRect)
# SELECTION AREA
painter.setPen(self.selectionPen)
painter.setBrush(self.selectionBrush)
painter.drawRect(self.selection)
# SYNTAX VALIDATION
painter.setRenderHint(QPainter.Antialiasing)
painter.setPen(self.backgroundPen)
painter.setBrush(self.backgroundBrush)
painter.drawRect(self.background)
# SHAPE
painter.setPen(self.pen)
painter.setBrush(self.brush)
painter.drawPolygon(self.polygon)
painter.drawPolygon(self.fold)
class IndividualNode(AbstractResizableNode):
"""
This class implements the 'Individual' node.
"""
indexLT = 0
indexLB = 1
indexBL = 2
indexBR = 3
indexRB = 4
indexRT = 5
indexTR = 6
indexTL = 7
indexEE = 8
identities = {Identity.Instance, Identity.Value}
item = Item.IndividualNode
minheight = 60
minwidth = 60
def __init__(self, width=minwidth, height=minheight, brush=None, **kwargs):
"""
Initialize the node.
:type width: int
:type height: int
:type brush: QBrush
"""
super().__init__(**kwargs)
w = max(width, self.minwidth)
h = max(height, self.minheight)
s = self.handleSize
self.brush = brush or QBrush(QColor(252, 252, 252))
self.pen = QPen(QColor(0, 0, 0), 1.0, Qt.SolidLine)
self.polygon = self.createPolygon(w, h)
self.background = self.createBackground(w + s, h + s)
self.selection = self.createSelection(w + s, h + s)
self.label = Label('instance', parent=self)
self.label.updatePos()
self.updateHandles()
####################################################################################################################
# #
# PROPERTIES #
# #
####################################################################################################################
@property
def datatype(self):
"""
Returns the datatype associated with this node.
:rtype: XsdDatatype
"""
match = RE_VALUE.match(self.text())
if match:
return XsdDatatype.forValue(match.group('datatype'))
return None
@property
def identity(self):
"""
Returns the identity of the current node.
:rtype: Identity
"""
match = RE_VALUE.match(self.text())
if match:
return Identity.Value
return Identity.Instance
@property
def value(self):
"""
Returns the value value associated with this node.
:rtype: str
"""
match = RE_VALUE.match(self.text())
if match:
return match.group('value')
return None
####################################################################################################################
# #
# INTERFACE #
# #
####################################################################################################################
@staticmethod
def composeValue(value, datatype):
"""
Compose the value string.
:type value: str
:type datatype: XsdDatatype
:return: str
"""
return '"{}"^^{}'.format(cutR(cutL(value.strip(), '"'), '"'), datatype.value)
def copy(self, scene):
"""
Create a copy of the current item.
:type scene: DiagramScene
"""
kwargs = {
'id': self.id,
'brush': self.brush,
'height': self.height(),
'width': self.width(),
}
node = scene.factory.create(item=self.item, scene=scene, **kwargs)
node.setPos(self.pos())
node.setText(self.text())
node.setTextPos(node.mapFromScene(self.mapToScene(self.textPos())))
return node
@staticmethod
def createBackground(width, height):
"""
Returns the initialized background polygon according to the given width/height.
:type width: int
:type height: int
:rtype: QPolygonF
"""
return QPolygonF([
QPointF(-(width / 2), -((height / (1 + math.sqrt(2))) / 2)), # 0
QPointF(-(width / 2), +((height / (1 + math.sqrt(2))) / 2)), # 1
QPointF(-((width / (1 + math.sqrt(2))) / 2), +(height / 2)), # 2
QPointF(+((width / (1 + math.sqrt(2))) / 2), +(height / 2)), # 3
QPointF(+(width / 2), +((height / (1 + math.sqrt(2))) / 2)), # 4
QPointF(+(width / 2), -((height / (1 + math.sqrt(2))) / 2)), # 5
QPointF(+((width / (1 + math.sqrt(2))) / 2), -(height / 2)), # 6
QPointF(-((width / (1 + math.sqrt(2))) / 2), -(height / 2)), # 7
QPointF(-(width / 2), -((height / (1 + math.sqrt(2))) / 2)), # 8
])
@staticmethod
def createPolygon(width, height):
"""
Returns the initialized polygon according to the given width/height.
:type width: int
:type height: int
:rtype: QPolygonF
"""
return QPolygonF([
QPointF(-(width / 2), -((height / (1 + math.sqrt(2))) / 2)), # 0
QPointF(-(width / 2), +((height / (1 + math.sqrt(2))) / 2)), # 1
QPointF(-((width / (1 + math.sqrt(2))) / 2), +(height / 2)), # 2
QPointF(+((width / (1 + math.sqrt(2))) / 2), +(height / 2)), # 3
QPointF(+(width / 2), +((height / (1 + math.sqrt(2))) / 2)), # 4
QPointF(+(width / 2), -((height / (1 + math.sqrt(2))) / 2)), # 5
QPointF(+((width / (1 + math.sqrt(2))) / 2), -(height / 2)), # 6
QPointF(-((width / (1 + math.sqrt(2))) / 2), -(height / 2)), # 7
QPointF(-(width / 2), -((height / (1 + math.sqrt(2))) / 2)), # 8
])
def height(self):
"""
Returns the height of the shape.
:rtype: int
"""
return self.polygon[self.indexTR].y() - self.polygon[self.indexBR].y()
def interactiveResize(self, mousePos):
"""
Handle the interactive resize of the shape.
:type mousePos: QPointF
"""
scene = self.scene()
snap = scene.mainwindow.snapToGrid
size = scene.GridSize
offset = self.handleSize + self.handleMove
moved = self.label.moved
R = QRectF(self.boundingRect())
D = QPointF(0, 0)
minBoundW = self.minwidth + offset * 2
minBoundH = self.minheight + offset * 2
self.prepareGeometryChange()
if self.mousePressHandle == self.handleTL:
fromX = self.mousePressBound.left()
fromY = self.mousePressBound.top()
toX = fromX + mousePos.x() - self.mousePressPos.x()
toY = fromY + mousePos.y() - self.mousePressPos.y()
toX = snapF(toX, size, -offset, snap)
toY = snapF(toY, size, -offset, snap)
D.setX(toX - fromX)
D.setY(toY - fromY)
R.setLeft(toX)
R.setTop(toY)
## CLAMP SIZE
if R.width() < minBoundW:
D.setX(D.x() - minBoundW + R.width())
R.setLeft(R.left() - minBoundW + R.width())
if R.height() < minBoundH:
D.setY(D.y() - minBoundH + R.height())
R.setTop(R.top() - minBoundH + R.height())
newSideY = (R.height() - offset * 2) / (1 + math.sqrt(2))
newSideX = (R.width() - offset * 2) / (1 + math.sqrt(2))
newLeftRightBottomY = (R.y() + R.height() / 2) + newSideY / 2
newLeftRightTopY = (R.y() + R.height() / 2) - newSideY / 2
newTopBottomLeftX = (R.x() + R.width() / 2) - newSideX / 2
newTopBottomRightX = (R.x() + R.width() / 2) + newSideX / 2
self.selection.setLeft(R.left())
self.selection.setTop(R.top())
self.background[self.indexLT] = QPointF(R.left(), newLeftRightTopY)
self.background[self.indexLB] = QPointF(R.left(), newLeftRightBottomY)
self.background[self.indexRT] = QPointF(R.right(), newLeftRightTopY)
self.background[self.indexRB] = QPointF(R.right(), newLeftRightBottomY)
self.background[self.indexTL] = QPointF(newTopBottomLeftX, R.top())
self.background[self.indexTR] = QPointF(newTopBottomRightX, R.top())
self.background[self.indexBL] = QPointF(newTopBottomLeftX, R.bottom())
self.background[self.indexBR] = QPointF(newTopBottomRightX, R.bottom())
self.background[self.indexEE] = QPointF(R.left(), newLeftRightTopY)
self.polygon[self.indexLT] = QPointF(R.left() + offset, newLeftRightTopY)
self.polygon[self.indexLB] = QPointF(R.left() + offset, newLeftRightBottomY)
self.polygon[self.indexRT] = QPointF(R.right() - offset, newLeftRightTopY)
self.polygon[self.indexRB] = QPointF(R.right() - offset, newLeftRightBottomY)
self.polygon[self.indexTL] = QPointF(newTopBottomLeftX, R.top() + offset)
self.polygon[self.indexTR] = QPointF(newTopBottomRightX, R.top() + offset)
self.polygon[self.indexBL] = QPointF(newTopBottomLeftX, R.bottom() - offset)
self.polygon[self.indexBR] = QPointF(newTopBottomRightX, R.bottom() - offset)
self.polygon[self.indexEE] = QPointF(R.left() + offset, newLeftRightTopY)
elif self.mousePressHandle == self.handleTM:
fromY = self.mousePressBound.top()
toY = fromY + mousePos.y() - self.mousePressPos.y()
toY = snapF(toY, size, -offset, snap)
D.setY(toY - fromY)
R.setTop(toY)
## CLAMP SIZE
if R.height() < minBoundH:
D.setY(D.y() - minBoundH + R.height())
R.setTop(R.top() - minBoundH + R.height())
newSide = (R.height() - offset * 2) / (1 + math.sqrt(2))
newLeftRightBottomY = (R.y() + R.height() / 2) + newSide / 2
newLeftRightTopY = (R.y() + R.height() / 2) - newSide / 2
self.selection.setTop(R.top())
self.background[self.indexTL] = QPointF(self.background[self.indexTL].x(), R.top())
self.background[self.indexTR] = QPointF(self.background[self.indexTR].x(), R.top())
self.background[self.indexLB] = QPointF(self.background[self.indexLB].x(), newLeftRightBottomY)
self.background[self.indexRB] = QPointF(self.background[self.indexRB].x(), newLeftRightBottomY)
self.background[self.indexLT] = QPointF(self.background[self.indexLT].x(), newLeftRightTopY)
self.background[self.indexRT] = QPointF(self.background[self.indexRT].x(), newLeftRightTopY)
self.background[self.indexEE] = QPointF(self.background[self.indexEE].x(), newLeftRightTopY)
self.polygon[self.indexTL] = QPointF(self.polygon[self.indexTL].x(), R.top() + offset)
self.polygon[self.indexTR] = QPointF(self.polygon[self.indexTR].x(), R.top() + offset)
self.polygon[self.indexLB] = QPointF(self.polygon[self.indexLB].x(), newLeftRightBottomY)
self.polygon[self.indexRB] = QPointF(self.polygon[self.indexRB].x(), newLeftRightBottomY)
self.polygon[self.indexLT] = QPointF(self.polygon[self.indexLT].x(), newLeftRightTopY)
self.polygon[self.indexRT] = QPointF(self.polygon[self.indexRT].x(), newLeftRightTopY)
self.polygon[self.indexEE] = QPointF(self.polygon[self.indexEE].x(), newLeftRightTopY)
elif self.mousePressHandle == self.handleTR:
fromX = self.mousePressBound.right()
fromY = self.mousePressBound.top()
toX = fromX + mousePos.x() - self.mousePressPos.x()
toY = fromY + mousePos.y() - self.mousePressPos.y()
toX = snapF(toX, size, +offset, snap)
toY = snapF(toY, size, -offset, snap)
D.setX(toX - fromX)
D.setY(toY - fromY)
R.setRight(toX)
R.setTop(toY)
## CLAMP SIZE
if R.width() < minBoundW:
D.setX(D.x() + minBoundW - R.width())
R.setRight(R.right() + minBoundW - R.width())
if R.height() < minBoundH:
D.setY(D.y() - minBoundH + R.height())
R.setTop(R.top() - minBoundH + R.height())
newSideY = (R.height() - offset * 2) / (1 + math.sqrt(2))
newSideX = (R.width() - offset * 2) / (1 + math.sqrt(2))
newLeftRightBottomY = (R.y() + R.height() / 2) + newSideY / 2
newLeftRightTopY = (R.y() + R.height() / 2) - newSideY / 2
newTopBottomLeftX = (R.x() + R.width() / 2) - newSideX / 2
newTopBottomRightX = (R.x() + R.width() / 2) + newSideX / 2
self.selection.setRight(R.right())
self.selection.setTop(R.top())
self.background[self.indexLT] = QPointF(R.left(), newLeftRightTopY)
self.background[self.indexLB] = QPointF(R.left(), newLeftRightBottomY)
self.background[self.indexRT] = QPointF(R.right(), newLeftRightTopY)
self.background[self.indexRB] = QPointF(R.right(), newLeftRightBottomY)
self.background[self.indexTL] = QPointF(newTopBottomLeftX, R.top())
self.background[self.indexTR] = QPointF(newTopBottomRightX, R.top())
self.background[self.indexBL] = QPointF(newTopBottomLeftX, R.bottom())
self.background[self.indexBR] = QPointF(newTopBottomRightX, R.bottom())
self.background[self.indexEE] = QPointF(R.left(), newLeftRightTopY)
self.polygon[self.indexLT] = QPointF(R.left() + offset, newLeftRightTopY)
self.polygon[self.indexLB] = QPointF(R.left() + offset, newLeftRightBottomY)
self.polygon[self.indexRT] = QPointF(R.right() - offset, newLeftRightTopY)
self.polygon[self.indexRB] = QPointF(R.right() - offset, newLeftRightBottomY)
self.polygon[self.indexTL] = QPointF(newTopBottomLeftX, R.top() + offset)
self.polygon[self.indexTR] = QPointF(newTopBottomRightX, R.top() + offset)
self.polygon[self.indexBL] = QPointF(newTopBottomLeftX, R.bottom() - offset)
self.polygon[self.indexBR] = QPointF(newTopBottomRightX, R.bottom() - offset)
self.polygon[self.indexEE] = QPointF(R.left() + offset, newLeftRightTopY)
elif self.mousePressHandle == self.handleML:
fromX = self.mousePressBound.left()
toX = fromX + mousePos.x() - self.mousePressPos.x()
toX = snapF(toX, size, -offset, snap)
D.setX(toX - fromX)
R.setLeft(toX)
## CLAMP SIZE
if R.width() < minBoundW:
D.setX(D.x() - minBoundW + R.width())
R.setLeft(R.left() - minBoundW + R.width())
newSide = (R.width() - offset * 2) / (1 + math.sqrt(2))
newTopBottomLeftX = (R.x() + R.width() / 2) - newSide / 2
newTopBottomRightX = (R.x() + R.width() / 2) + newSide / 2
self.selection.setLeft(R.left())
self.background[self.indexLT] = QPointF(R.left(), self.background[self.indexLT].y())
self.background[self.indexLB] = QPointF(R.left(), self.background[self.indexLB].y())
self.background[self.indexEE] = QPointF(R.left(), self.background[self.indexEE].y())
self.background[self.indexTL] = QPointF(newTopBottomLeftX, self.background[self.indexTL].y())
self.background[self.indexTR] = QPointF(newTopBottomRightX, self.background[self.indexTR].y())
self.background[self.indexBL] = QPointF(newTopBottomLeftX, self.background[self.indexBL].y())
self.background[self.indexBR] = QPointF(newTopBottomRightX, self.background[self.indexBR].y())
self.polygon[self.indexLT] = QPointF(R.left() + offset, self.polygon[self.indexLT].y())
self.polygon[self.indexLB] = QPointF(R.left() + offset, self.polygon[self.indexLB].y())
self.polygon[self.indexEE] = QPointF(R.left() + offset, self.polygon[self.indexEE].y())
self.polygon[self.indexTL] = QPointF(newTopBottomLeftX, self.polygon[self.indexTL].y())
self.polygon[self.indexTR] = QPointF(newTopBottomRightX, self.polygon[self.indexTR].y())
self.polygon[self.indexBL] = QPointF(newTopBottomLeftX, self.polygon[self.indexBL].y())
self.polygon[self.indexBR] = QPointF(newTopBottomRightX, self.polygon[self.indexBR].y())
elif self.mousePressHandle == self.handleMR:
fromX = self.mousePressBound.right()
toX = fromX + mousePos.x() - self.mousePressPos.x()
toX = snapF(toX, size, +offset, snap)
D.setX(toX - fromX)
R.setRight(toX)
## CLAMP SIZE
if R.width() < minBoundW:
D.setX(D.x() + minBoundW - R.width())
R.setRight(R.right() + minBoundW - R.width())
newSide = (R.width() - offset * 2) / (1 + math.sqrt(2))
newTopBottomRightX = (R.x() + R.width() / 2) + newSide / 2
newTopBottomLeftX = (R.x() + R.width() / 2) - newSide / 2
self.selection.setRight(R.right())
self.background[self.indexRT] = QPointF(R.right(), self.background[self.indexRT].y())
self.background[self.indexRB] = QPointF(R.right(), self.background[self.indexRB].y())
self.background[self.indexTL] = QPointF(newTopBottomLeftX, self.background[self.indexTL].y())
self.background[self.indexTR] = QPointF(newTopBottomRightX, self.background[self.indexTR].y())
self.background[self.indexBL] = QPointF(newTopBottomLeftX, self.background[self.indexBL].y())
self.background[self.indexBR] = QPointF(newTopBottomRightX, self.background[self.indexBR].y())
self.polygon[self.indexRT] = QPointF(R.right() - offset, self.polygon[self.indexRT].y())
self.polygon[self.indexRB] = QPointF(R.right() - offset, self.polygon[self.indexRB].y())
self.polygon[self.indexTL] = QPointF(newTopBottomLeftX, self.polygon[self.indexTL].y())
self.polygon[self.indexTR] = QPointF(newTopBottomRightX, self.polygon[self.indexTR].y())
self.polygon[self.indexBL] = QPointF(newTopBottomLeftX, self.polygon[self.indexBL].y())
self.polygon[self.indexBR] = QPointF(newTopBottomRightX, self.polygon[self.indexBR].y())
elif self.mousePressHandle == self.handleBL:
fromX = self.mousePressBound.left()
fromY = self.mousePressBound.bottom()
toX = fromX + mousePos.x() - self.mousePressPos.x()
toY = fromY + mousePos.y() - self.mousePressPos.y()
toX = snapF(toX, size, -offset, snap)
toY = snapF(toY, size, +offset, snap)
D.setX(toX - fromX)
D.setY(toY - fromY)
R.setLeft(toX)
R.setBottom(toY)
## CLAMP SIZE
if R.width() < minBoundW:
D.setX(D.x() - minBoundW + R.width())
R.setLeft(R.left() - minBoundW + R.width())
if R.height() < minBoundH:
D.setY(D.y() + minBoundH - R.height())
R.setBottom(R.bottom() + minBoundH - R.height())
newSideY = (R.height() - offset * 2) / (1 + math.sqrt(2))
newSideX = (R.width() - offset * 2) / (1 + math.sqrt(2))
newLeftRightBottomY = (R.y() + R.height() / 2) + newSideY / 2
newLeftRightTopY = (R.y() + R.height() / 2) - newSideY / 2
newTopBottomLeftX = (R.x() + R.width() / 2) - newSideX / 2
newTopBottomRightX = (R.x() + R.width() / 2) + newSideX / 2
self.selection.setLeft(R.left())
self.selection.setBottom(R.bottom())
self.background[self.indexLT] = QPointF(R.left(), newLeftRightTopY)
self.background[self.indexLB] = QPointF(R.left(), newLeftRightBottomY)
self.background[self.indexRT] = QPointF(R.right(), newLeftRightTopY)
self.background[self.indexRB] = QPointF(R.right(), newLeftRightBottomY)
self.background[self.indexTL] = QPointF(newTopBottomLeftX, R.top())
self.background[self.indexTR] = QPointF(newTopBottomRightX, R.top())
self.background[self.indexBL] = QPointF(newTopBottomLeftX, R.bottom())
self.background[self.indexBR] = QPointF(newTopBottomRightX, R.bottom())
self.background[self.indexEE] = QPointF(R.left(), newLeftRightTopY)
self.polygon[self.indexLT] = QPointF(R.left() + offset, newLeftRightTopY)
self.polygon[self.indexLB] = QPointF(R.left() + offset, newLeftRightBottomY)
self.polygon[self.indexRT] = QPointF(R.right() - offset, newLeftRightTopY)
self.polygon[self.indexRB] = QPointF(R.right() - offset, newLeftRightBottomY)
self.polygon[self.indexTL] = QPointF(newTopBottomLeftX, R.top() + offset)
self.polygon[self.indexTR] = QPointF(newTopBottomRightX, R.top() + offset)
self.polygon[self.indexBL] = QPointF(newTopBottomLeftX, R.bottom() - offset)
self.polygon[self.indexBR] = QPointF(newTopBottomRightX, R.bottom() - offset)
self.polygon[self.indexEE] = QPointF(R.left() + offset, newLeftRightTopY)
elif self.mousePressHandle == self.handleBM:
fromY = self.mousePressBound.bottom()
toY = fromY + mousePos.y() - self.mousePressPos.y()
toY = snapF(toY, size, +offset, snap)
D.setY(toY - fromY)
R.setBottom(toY)
## CLAMP SIZE
if R.height() < minBoundH:
D.setY(D.y() + minBoundH - R.height())
R.setBottom(R.bottom() + minBoundH - R.height())
newSide = (R.height() - offset * 2) / (1 + math.sqrt(2))
newLeftRightTopY = (R.y() + R.height() / 2) - newSide / 2
newLeftRightBottomY = (R.y() + R.height() / 2) + newSide / 2
self.selection.setBottom(R.bottom())
self.background[self.indexBL] = QPointF(self.background[self.indexBL].x(), R.bottom())
self.background[self.indexBR] = QPointF(self.background[self.indexBR].x(), R.bottom())
self.background[self.indexLB] = QPointF(self.background[self.indexLB].x(), newLeftRightBottomY)
self.background[self.indexRB] = QPointF(self.background[self.indexRB].x(), newLeftRightBottomY)
self.background[self.indexLT] = QPointF(self.background[self.indexLT].x(), newLeftRightTopY)
self.background[self.indexRT] = QPointF(self.background[self.indexRT].x(), newLeftRightTopY)
self.background[self.indexEE] = QPointF(self.background[self.indexEE].x(), newLeftRightTopY)
self.polygon[self.indexBL] = QPointF(self.polygon[self.indexBL].x(), R.bottom() - offset)
self.polygon[self.indexBR] = QPointF(self.polygon[self.indexBR].x(), R.bottom() - offset)
self.polygon[self.indexLB] = QPointF(self.polygon[self.indexLB].x(), newLeftRightBottomY)
self.polygon[self.indexRB] = QPointF(self.polygon[self.indexRB].x(), newLeftRightBottomY)
self.polygon[self.indexLT] = QPointF(self.polygon[self.indexLT].x(), newLeftRightTopY)
self.polygon[self.indexRT] = QPointF(self.polygon[self.indexRT].x(), newLeftRightTopY)
self.polygon[self.indexEE] = QPointF(self.polygon[self.indexEE].x(), newLeftRightTopY)
elif self.mousePressHandle == self.handleBR:
fromX = self.mousePressBound.right()
fromY = self.mousePressBound.bottom()
toX = fromX + mousePos.x() - self.mousePressPos.x()
toY = fromY + mousePos.y() - self.mousePressPos.y()
toX = snapF(toX, size, +offset, snap)
toY = snapF(toY, size, +offset, snap)
D.setX(toX - fromX)
D.setY(toY - fromY)
R.setRight(toX)
R.setBottom(toY)
## CLAMP SIZE
if R.width() < minBoundW:
D.setX(D.x() + minBoundW - R.width())
R.setRight(R.right() + minBoundW - R.width())
if R.height() < minBoundH:
D.setY(D.y() + minBoundH - R.height())
R.setBottom(R.bottom() + minBoundH - R.height())
newSideY = (R.height() - offset * 2) / (1 + math.sqrt(2))
newSideX = (R.width() - offset * 2) / (1 + math.sqrt(2))
newLeftRightBottomY = (R.y() + R.height() / 2) + newSideY / 2
newLeftRightTopY = (R.y() + R.height() / 2) - newSideY / 2
newTopBottomLeftX = (R.x() + R.width() / 2) - newSideX / 2
newTopBottomRightX = (R.x() + R.width() / 2) + newSideX / 2
self.selection.setRight(R.right())
self.selection.setBottom(R.bottom())
self.background[self.indexLT] = QPointF(R.left(), newLeftRightTopY)
self.background[self.indexLB] = QPointF(R.left(), newLeftRightBottomY)
self.background[self.indexRT] = QPointF(R.right(), newLeftRightTopY)
self.background[self.indexRB] = QPointF(R.right(), newLeftRightBottomY)
self.background[self.indexTL] = QPointF(newTopBottomLeftX, R.top())
self.background[self.indexTR] = QPointF(newTopBottomRightX, R.top())
self.background[self.indexBL] = QPointF(newTopBottomLeftX, R.bottom())
self.background[self.indexBR] = QPointF(newTopBottomRightX, R.bottom())
self.background[self.indexEE] = QPointF(R.left(), newLeftRightTopY)
self.polygon[self.indexLT] = QPointF(R.left() + offset, newLeftRightTopY)
self.polygon[self.indexLB] = QPointF(R.left() + offset, newLeftRightBottomY)
self.polygon[self.indexRT] = QPointF(R.right() - offset, newLeftRightTopY)
self.polygon[self.indexRB] = QPointF(R.right() - offset, newLeftRightBottomY)
self.polygon[self.indexTL] = QPointF(newTopBottomLeftX, R.top() + offset)
self.polygon[self.indexTR] = QPointF(newTopBottomRightX, R.top() + offset)
self.polygon[self.indexBL] = QPointF(newTopBottomLeftX, R.bottom() - offset)
self.polygon[self.indexBR] = QPointF(newTopBottomRightX, R.bottom() - offset)
self.polygon[self.indexEE] = QPointF(R.left() + offset, newLeftRightTopY)
self.updateHandles()
self.updateTextPos(moved=moved)
self.updateAnchors(self.mousePressData, D)
def width(self):
"""
Returns the width of the shape.
:rtype: int
"""
return self.polygon[self.indexRT].x() - self.polygon[self.indexLT].x()
####################################################################################################################
# #
# GEOMETRY #
# #
####################################################################################################################
def boundingRect(self):
"""
Returns the shape bounding rectangle.
:rtype: QRectF
"""
return self.selection
def painterPath(self):
"""
Returns the current shape as QPainterPath (used for collision detection).
:rtype: QPainterPath
"""
path = QPainterPath()
path.addPolygon(self.polygon)
return path
def shape(self):
"""
Returns the shape of this item as a QPainterPath in local coordinates.
:rtype: QPainterPath
"""
path = QPainterPath()
path.addPolygon(self.polygon)
for shape in self.handleBound:
path.addEllipse(shape)
return path
####################################################################################################################
# #
# LABEL SHORTCUTS #
# #
####################################################################################################################
def textPos(self):
"""
Returns the current label position in item coordinates.
:rtype: QPointF
"""
return self.label.pos()
def text(self):
"""
Returns the label text.
:rtype: str
"""
return self.label.text()
def setTextPos(self, pos):
"""
Set the label position.
:type pos: QPointF
"""
self.label.setPos(pos)
def setText(self, text):
"""
Set the label text: will additionally block label editing if a literal is being.
:type text: str
"""
self.label.editable = RE_VALUE.match(text) is None
self.label.setText(text)
def updateTextPos(self, *args, **kwargs):
"""
Update the label position.
"""
self.label.updatePos(*args, **kwargs)
####################################################################################################################
# #
# DRAWING #
# #
####################################################################################################################
@classmethod
def image(cls, **kwargs):
"""
Returns an image suitable for the palette.
:rtype: QPixmap
"""
# INITIALIZATION
pixmap = QPixmap(kwargs['w'], kwargs['h'])
pixmap.fill(Qt.transparent)
painter = QPainter(pixmap)
polygon = cls.createPolygon(40, 40)
# ITEM SHAPE
painter.setPen(QPen(QColor(0, 0, 0), 1.0, Qt.SolidLine))
painter.setBrush(QColor(252, 252, 252))
painter.translate(kwargs['w'] / 2, kwargs['h'] / 2)
painter.drawPolygon(polygon)
# TEXT WITHIN THE SHAPE
painter.setFont(Font('Arial', 9, Font.Light))
painter.drawText(-16, 4, 'instance')
return pixmap
def paint(self, painter, option, widget=None):
"""
Paint the node in the diagram scene.
:type painter: QPainter
:type option: QStyleOptionGraphicsItem
:type widget: QWidget
"""
# SET THE RECT THAT NEEDS TO BE REPAINTED
painter.setClipRect(option.exposedRect)
# SELECTION AREA
painter.setPen(self.selectionPen)
painter.setBrush(self.selectionBrush)
painter.drawRect(self.selection)
# SYNTAX VALIDATION
painter.setRenderHint(QPainter.Antialiasing)
painter.setPen(self.backgroundPen)
painter.setBrush(self.backgroundBrush)
painter.drawPolygon(self.background)
# ITEM SHAPE
painter.setPen(self.pen)
painter.setBrush(self.brush)
painter.drawPolygon(self.polygon)
# RESIZE HANDLES
painter.setRenderHint(QPainter.Antialiasing)
for i in range(self.handleNum):
painter.setBrush(self.handleBrush[i])
painter.setPen(self.handlePen[i])
painter.drawEllipse(self.handleBound[i])