def mouseMoveEvent(self, event):
if self.__resizing:
delta = event.pos() - event.lastPos()
bottomRight = self.boundingRect().bottomRight() + delta
newRect = QtCore.QRectF(0., 0., bottomRight.x(), bottomRight.y())
if newRect.contains(
self.__headerContentRect.adjusted(0, 0, 0,
self.__handleSize)):
self.setRect(newRect)
self.__headerRect = QtCore.QRectF(
0., 0., bottomRight.x(), self.__headerContentRect.height())
self.__moveHandleBottomRightTo(newRect.bottomRight())
else:
QtGui.QGraphicsRectItem.mouseMoveEvent(self, event)
def mousePressEvent(self, event):
pos = event.pos()
bottomRight = self.boundingRect().bottomRight()
x, y = bottomRight.x(), bottomRight.y()
rect = QtCore.QRectF(x - 5, y - 5, x + 5, y + 5)
if self.__handlePoly.containsPoint(pos, QtCore.Qt.OddEvenFill):
self.__resizing = True
else:
QtGui.QGraphicsRectItem.mousePressEvent(self, event)
def boundingRect(self, force=True):
if force or self._boundCache is None:
x, y, w, h = self._boundingRect()
w = max(w, self._minWidth)
h = max(h, self._minHeight)
self._boundCache = QtCore.QRectF(x, y, w, h)
if self._parent:
self._parent.boundCache = None
return self._boundCache
def find_closest_connectable(self, pos, boxsize=10.0):
# creation of a square to find connectables inside.
if isinstance(pos, QtCore.QPointF) : pos = pos.x(), pos.y()
rect = QtCore.QRectF((pos[0] - boxsize / 2), (pos[1] - boxsize / 2), boxsize, boxsize)
dstPortItems = self.items(rect)
dstPortItems = [item for item in dstPortItems if self.is_connectable(item)]
distance = float('inf')
dstPortItem = None
for item in dstPortItems:
d = sqrt((item.boundingRect().center().x() - pos[0]) ** 2 +
(item.boundingRect().center().y() - pos[1]) ** 2)
if d < distance:
distance = d
dstPortItem = item
return dstPortItem
def paint_data(self, data, painter, rectangle, option=None):
painter.save()
pen = QtGui.QPen()
if option and option.state & QtGui.QStyle.State_Selected:
painter.fillRect(option.rect, option.palette.highlight())
pen.setColor(option.palette.highlightedText().color())
else:
pen.setColor(QtCore.Qt.blue)
painter.setPen(pen)
painter.setRenderHint(painter.Antialiasing, True)
text_option = QtGui.QTextOption()
text_option.setAlignment(QtCore.Qt.AlignHCenter)
painter.drawText(QtCore.QRectF(rectangle), data, text_option)
painter.restore()
def paint_data(self, data, painter, rectangle, option=None, **kwargs):
if data is None:
return
painter.save()
if option:
rectangle = option.rect
pen = QtGui.QPen()
if option.state & QtGui.QStyle.State_Selected:
pen.setColor(option.palette.highlightedText().color())
painter.setPen(pen)
painter.setRenderHint(painter.Antialiasing, True)
painter.fillRect(rectangle, option.palette.highlight())
x = rectangle.x()
y = rectangle.y()
size = min(rectangle.width(), rectangle.height())
frame = QtCore.QRectF(x, y, size, size)
painter.drawImage(frame, to_image(data))
painter.restore()
def drawSpan(self, painter, rect):
opt = QtGui.QStyleOptionSlider()
QtGui.QSlider.initStyleOption(self, opt)
# area
groove = self.style().subControlRect(QtGui.QStyle.CC_Slider, opt, QtGui.QStyle.SC_SliderGroove, self)
if opt.orientation == QtCore.Qt.Horizontal:
groove.adjust(0, 0, -1, 0)
else:
groove.adjust(0, 0, 0, -1)
# pen & brush
painter.setPen(QtGui.QPen(self.gradientLeft, 0))
if opt.orientation == QtCore.Qt.Horizontal:
self.setupPainter(painter, opt.orientation, groove.center().x(), groove.top(), groove.center().x(), groove.bottom())
else:
self.setupPainter(painter, opt.orientation, groove.left(), groove.center().y(), groove.right(), groove.center().y())
# draw groove
intersected = QtCore.QRectF(rect.intersected(groove))
gradient = QtGui.QLinearGradient(intersected.topLeft(), intersected.topRight())
gradient.setColorAt(0, self.gradientLeft)
gradient.setColorAt(1, self.gradientRight)
painter.fillRect(intersected, gradient)
