本文整理匯總了Python中PyQt5.QtWidgets.QGraphicsTextItem.setX方法的典型用法代碼示例。如果您正苦於以下問題：Python QGraphicsTextItem.setX方法的具體用法？Python QGraphicsTextItem.setX怎麽用？Python QGraphicsTextItem.setX使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類PyQt5.QtWidgets.QGraphicsTextItem的用法示例。
在下文中一共展示了QGraphicsTextItem.setX方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。
示例1: Edge
# 需要導入模塊: from PyQt5.QtWidgets import QGraphicsTextItem [as 別名]
# 或者: from PyQt5.QtWidgets.QGraphicsTextItem import setX [as 別名]
#.........這裏部分代碼省略.........
@property
def end_point(self):
''' Compute connection end point - redefine in subclasses '''
return self.mapFromScene(*self.edge['end']) \
if self.edge.get('end') else None
def bezier_set_visible(self, visible=True):
''' Display or hide the edge control points '''
self.bezier_visible = visible
for group in self.bezier[1:]:
for ctrl_point in group:
if visible:
ctrl_point.show()
else:
ctrl_point.hide()
if visible:
self.end_connection.show()
self.source_connection.show()
else:
self.end_connection.hide()
self.source_connection.hide()
self.update()
def mousePressEvent(self, event):
''' On a mouse click, display the control points '''
self.bezier_set_visible(True)
# pylint: disable=R0914
def reshape(self):
''' Update the shape of the edge (redefined function) '''
path = QPainterPath()
# If there is a starting point, draw a line to the first curve point
if self.start_point:
path.moveTo(self.source_connection.center)
path.lineTo(self.bezier[0])
else:
path.moveTo(self.source_connection.center)
# Loop over the curve points:
for group in self.bezier[1:]:
path.cubicTo(*[point.center for point in group])
# If there is an ending point, draw a line to it
if self.end_point:
path.lineTo(self.end_connection.center)
end_point = path.currentPosition()
arrowhead = self.angle_arrow(path)
path.lineTo(arrowhead[0])
path.moveTo(end_point)
path.lineTo(arrowhead[1])
path.moveTo(end_point)
try:
# Add the transition label, if any (none for the START edge)
font = QFont('arial', pointSize=8)
metrics = QFontMetrics(font)
label = self.edge.get('label', '')
lines = label.split('\n')
width = metrics.width(max(lines)) # longest line
height = metrics.height() * len(lines)
# lp is the position of the center of the text
pos = self.mapFromScene(*self.edge['lp'])
if not self.text_label:
self.text_label = QGraphicsTextItem(
self.edge.get('label', ''), parent=self)
self.text_label.setX(pos.x() - width / 2)
self.text_label.setY(pos.y() - height / 2)
self.text_label.setFont(font)
# Make horizontal center alignment, as dot does
self.text_label.setTextWidth(self.text_label.boundingRect().width())
fmt = QTextBlockFormat()
fmt.setAlignment(Qt.AlignHCenter)
cursor = self.text_label.textCursor()
cursor.select(QTextCursor.Document)
cursor.mergeBlockFormat(fmt)
cursor.clearSelection()
self.text_label.setTextCursor(cursor)
self.text_label.show()
except KeyError:
# no label
pass
self.setPath(path)
def __str__(self):
''' user-friendly information about the edge coordinates '''
return('Edge between ' + self.edge['source'].name + ' and ' +
self.edge['target'].name + str(self.edge['spline'][0]))
def paint(self, painter, option, widget):
''' Apply anti-aliasing to Edge Connections '''
painter.setRenderHint(QPainter.Antialiasing, True)
super(Edge, self).paint(painter, option, widget)
# Draw lines between connection points, if visible
if self.bezier_visible:
painter.setPen(
QPen(Qt.lightGray, 0, Qt.SolidLine))
painter.setBrush(Qt.NoBrush)
points_flat = [point.center
for sub1 in self.bezier[1:] for point in sub1]
painter.drawPolyline([self.source_connection.center]
+ points_flat + [self.end_connection.center])