def _add_selection(self, item):
"""Add selection rooted at item
"""
outline = self._selection_poly(item)
selection_item = QGraphicsPolygonItem(self)
# selection_item = QGraphicsPathItem(self)
selection_item.setPos(self.contentsRect().topLeft())
# selection_item.setPen(QPen(Qt.NoPen))
selection_item.setPen(make_pen(width=1, cosmetic=True))
transform = self._itemgroup.transform()
path = transform.map(outline)
margin = 4
if item.node.is_leaf:
path = QPolygonF(path.boundingRect().adjusted(
-margin, -margin, margin, margin))
else:
pass
# ppath = QPainterPath()
# ppath.addPolygon(path)
# path = path_outline(ppath, width=margin).toFillPolygon()
selection_item.setPolygon(path)
# selection_item.setPath(path_outline(path, width=4))
selection_item.unscaled_path = outline
self._selection[item] = selection_item
item.setSelected(True)
def _add_selection(self, item):
"""Add selection rooted at item
"""
outline = self._selection_poly(item)
selection_item = QGraphicsPolygonItem(self)
# selection_item = QGraphicsPathItem(self)
selection_item.setPos(self.contentsRect().topLeft())
# selection_item.setPen(QPen(Qt.NoPen))
selection_item.setPen(make_pen(width=1, cosmetic=True))
transform = self._itemgroup.transform()
path = transform.map(outline)
margin = 4
if item.node.is_leaf:
path = QPolygonF(path.boundingRect()
.adjusted(-margin, -margin, margin, margin))
else:
pass
# ppath = QPainterPath()
# ppath.addPolygon(path)
# path = path_outline(ppath, width=margin).toFillPolygon()
selection_item.setPolygon(path)
# selection_item.setPath(path_outline(path, width=4))
selection_item.unscaled_path = outline
self._selection[item] = selection_item
item.setSelected(True)
class PolygonCurve(OWCurve):
"""
A plot item that shows a filled or empty polygon.
:param pen: The pen used to draw the polygon's outline
:type pen: :obj:`.QPen`
:param brush: The brush used to paint the polygon's inside
:type brush: :obj:`.QBrush`
:param xData: The list of x coordinates
:type xData: list of float
:param yData: The list of y coordinates
:type yData: list of float
:param tooltip: The tool tip shown when hovering over this curve
:type tooltip: str
"""
def __init__(self,
pen=QPen(Qt.black),
brush=QBrush(Qt.white),
xData=[],
yData=[],
tooltip=None):
OWCurve.__init__(self, xData, yData, tooltip=tooltip)
self._data_polygon = self.polygon_from_data(xData, yData)
self._polygon_item = QGraphicsPolygonItem(self)
self.set_pen(pen)
self.set_brush(brush)
def update_properties(self):
self._polygon_item.setPolygon(self.graph_transform().map(
self._data_polygon))
self._polygon_item.setPen(self.pen())
self._polygon_item.setBrush(self.brush())
@staticmethod
def polygon_from_data(xData, yData):
"""
Creates a polygon from a list of x and y coordinates.
:returns: A polygon with point corresponding to ``xData`` and ``yData``.
:rtype: QPolygonF
"""
if xData and yData:
n = min(len(xData), len(yData))
p = QPolygonF(n + 1)
for i in range(n):
p[i] = QPointF(xData[i], yData[i])
p[n] = QPointF(xData[0], yData[0])
return p
else:
return QPolygonF()
def set_data(self, xData, yData):
self._data_polygon = self.polygon_from_data(xData, yData)
OWCurve.set_data(self, xData, yData)
class PolygonCurve(OWCurve):
"""
A plot item that shows a filled or empty polygon.
:param pen: The pen used to draw the polygon's outline
:type pen: :obj:`.QPen`
:param brush: The brush used to paint the polygon's inside
:type brush: :obj:`.QBrush`
:param xData: The list of x coordinates
:type xData: list of float
:param yData: The list of y coordinates
:type yData: list of float
:param tooltip: The tool tip shown when hovering over this curve
:type tooltip: str
"""
def __init__(self, pen=QPen(Qt.black), brush=QBrush(Qt.white), xData=[], yData=[], tooltip=None):
OWCurve.__init__(self, xData, yData, tooltip=tooltip)
self._data_polygon = self.polygon_from_data(xData, yData)
self._polygon_item = QGraphicsPolygonItem(self)
self.set_pen(pen)
self.set_brush(brush)
def update_properties(self):
self._polygon_item.setPolygon(self.graph_transform().map(self._data_polygon))
self._polygon_item.setPen(self.pen())
self._polygon_item.setBrush(self.brush())
@staticmethod
def polygon_from_data(xData, yData):
"""
Creates a polygon from a list of x and y coordinates.
:returns: A polygon with point corresponding to ``xData`` and ``yData``.
:rtype: QPolygonF
"""
if xData and yData:
n = min(len(xData), len(yData))
p = QPolygonF(n + 1)
for i in range(n):
p[i] = QPointF(xData[i], yData[i])
p[n] = QPointF(xData[0], yData[0])
return p
else:
return QPolygonF()
def set_data(self, xData, yData):
self._data_polygon = self.polygon_from_data(xData, yData)
OWCurve.set_data(self, xData, yData)
class ParallelCoordinatePolygon(OWPlotItem):
def __init__(self, i, mu1, mu2, sigma1, sigma2, phi, color):
OWPlotItem.__init__(self)
self.outer_box = QGraphicsPolygonItem(self)
self.inner_box = QGraphicsPolygonItem(self)
self.i = i
self.mu1 = mu1
self.mu2 = mu2
self.sigma1 = sigma1
self.sigma2 = sigma2
self.phi = phi
self.twosigmapolygon = QPolygonF([
QPointF(i, mu1 - sigma1),
QPointF(i, mu1 + sigma1),
QPointF(i + 1, mu2 + sigma2),
QPointF(i + 1, mu2 - sigma2),
QPointF(i, mu1 - sigma1)
])
self.sigmapolygon = QPolygonF([
QPointF(i, mu1 - .5 * sigma1),
QPointF(i, mu1 + .5 * sigma1),
QPointF(i + 1, mu2 + .5 * sigma2),
QPointF(i + 1, mu2 - .5 * sigma2),
QPointF(i, mu1 - .5 * sigma1)
])
if isinstance(color, tuple):
color = QColor(*color)
color.setAlphaF(.3)
self.outer_box.setBrush(color)
self.outer_box.setPen(QColor(0, 0, 0, 0))
self.inner_box.setBrush(color)
self.inner_box.setPen(color)
def update_properties(self):
self.outer_box.setPolygon(self.graph_transform().map(
self.twosigmapolygon))
self.inner_box.setPolygon(self.graph_transform().map(
self.sigmapolygon))
class ParallelCoordinatePolygon(OWPlotItem):
def __init__(self, i, mu1, mu2, sigma1, sigma2, phi, color):
OWPlotItem.__init__(self)
self.outer_box = QGraphicsPolygonItem(self)
self.inner_box = QGraphicsPolygonItem(self)
self.i = i
self.mu1 = mu1
self.mu2 = mu2
self.sigma1 = sigma1
self.sigma2 = sigma2
self.phi = phi
self.twosigmapolygon = QPolygonF([
QPointF(i, mu1 - sigma1), QPointF(i, mu1 + sigma1),
QPointF(i + 1, mu2 + sigma2), QPointF(i + 1, mu2 - sigma2),
QPointF(i, mu1 - sigma1)
])
self.sigmapolygon = QPolygonF([
QPointF(i, mu1 - .5 * sigma1), QPointF(i, mu1 + .5 * sigma1),
QPointF(i + 1, mu2 + .5 * sigma2), QPointF(i + 1, mu2 - .5 * sigma2),
QPointF(i, mu1 - .5 * sigma1)
])
if isinstance(color, tuple):
color = QColor(*color)
color.setAlphaF(.3)
self.outer_box.setBrush(color)
self.outer_box.setPen(QColor(0, 0, 0, 0))
self.inner_box.setBrush(color)
self.inner_box.setPen(color)
def update_properties(self):
self.outer_box.setPolygon(self.graph_transform().map(self.twosigmapolygon))
self.inner_box.setPolygon(self.graph_transform().map(self.sigmapolygon))
