def addEdge(self,
startPt,
endPt,
label,
edgeColor,
labelColor=None,
xoffset=0.0):
if not labelColor:
labelColor = edgeColor
assert isinstance(startPt, QPointF)
assert isinstance(endPt, QPointF)
assert isinstance(label, str)
# if color in self.edgeList:
# self.lineList[color].extend( line_list )
# else:
# self.lineList[color] = line_list
# print(self.edgeList)
edge = QLineF(startPt, endPt)
if edgeColor in self.edgeList.keys():
self.edgeList[edgeColor].append(edge)
else:
self.edgeList[edgeColor] = [edge]
# self.update()
midp = QPointF((edge.x1() * 0.2 + edge.x2() * 0.8),
(edge.y1() * 0.2 + edge.y2() * 0.8))
self.addLabel(midp, label, labelColor, xoffset=xoffset)
def get_midpoint(label: str, side: QLineF) -> (QPointF, QPointF):
"""
Procedure to compute the midpoint of a rectangle side.
Parameters
----------
label : str
The side label ("top", "right", "bottom", "left")
side : QLineF
The line representing the side.
Returns
----------
tuple
The two coordinates of the mid-point.
"""
mid_x = (side.x1() + side.x2()) / 2
mid_y = (side.y1() + side.y2()) / 2
# Add a margin depending on the side
if label == "top":
mid_y += 4
elif label == "right":
mid_x -= 4
elif label == "bottom":
mid_y -= 4
elif label == "left":
mid_x += 4
return mid_x, mid_y
class Border(QGraphicsItem):
#def __init__(self, x, y, width, height, vx, vy):
def __init__(self, x1, y1, x2, y2, dir):
super(Border, self).__init__()
#self.pos = QPointF(x, y)
#self.lines = [QLineF(x, y, x + width, y),
# QLineF(x, y, x, y + height),
# QLineF(x, y + height, x + width, y + height),
# QLineF(x + width, y, x + width, y + height)]
#self.width = width
#self.height = height
#self.rect = QRectF(self.pos.x(), self.pos.y(), self.width, self.height)
if dir == 1:
self.line = QLineF(x1, y1, x2, y2)
else:
self.line = QLineF(x2, y2, x1, y1)
#self.direction = QVector2D(vx, vy)
def type(self):
return QGraphicsItem.UserType + 1
# def collisionAngle(self, line):
# intersects = (None, 0)
# for l in self.lines:
# r = line.intersects(l)
# print (r, l, line)
# if r[0] == 1:
# tmp = QLineF(line.p1(), r[1])
# if intersects[0] is None or tmp.length() < intersects[1]:
# print ("raggio ", tmp, tmp.length()) # corretto
# print ("l ", l, tmp.angleTo(l))
# print ("l_perp ", l.normalVector(), tmp.angleTo(l.normalVector()))
# intersects = [tmp, tmp.length(), tmp.angleTo(l.normalVector())]
# print ("inter ", intersects)
#
# if intersects[0] is not None:
# return intersects[2]
# else:
# return 0
def boundingRect(self):
#return QRectF(self.pos.x(), self.pos.y(), self.width, self.height)
return QRectF(self.line.x1(), self.line.y1(),
self.line.dx() + 2,
self.line.dy() + 2)
def paint(self, painter, option, widget):
#painter.setRenderHint(QPainter::Antialiasing);
#painter.setPen(Qt::black);
painter.setPen(QPen(Qt.black, 5, Qt.SolidLine))
painter.setBrush(QBrush(Qt.red, Qt.VerPattern))
painter.drawLine(self.line)
def draw_axis(
painter: QtGui.QPainter,
axis: QtCore.QLineF,
pen: QtGui.QPen,
dash_pen: QtGui.QPen
) -> None:
""" Рисует координатную ось """
painter.setPen(pen)
painter.drawLine(
int(axis.x1()),
int(axis.y1()),
int(axis.x2()),
int(axis.y2())
)
def _drawGuidelines(painter,
glyph,
scale,
rect,
guidelines,
drawLines=True,
drawText=True,
drawSelection=True,
color=None):
if not (drawLines or drawText):
return
xMin, yMin, width, height = rect
xMax = xMin + width
yMax = yMin + height
for line in guidelines:
color_ = color
if color_ is None:
if line.color:
color_ = colorToQColor(line.color)
else:
color_ = defaultColor("glyphGuideline")
painter.save()
painter.setPen(color)
line1 = None
if None not in (line.x, line.y):
if line.angle is not None:
# make an infinite line that intersects *(line.x, line.y)*
# 1. make horizontal line from *(line.x, line.y)* of length
# *diagonal*
diagonal = math.sqrt(width**2 + height**2)
line1 = QLineF(line.x, line.y, line.x + diagonal, line.y)
# 2. set the angle
# defcon guidelines are clockwise
line1.setAngle(line.angle)
# 3. reverse the line and set length to 2 * *diagonal*
line1.setPoints(line1.p2(), line1.p1())
line1.setLength(2 * diagonal)
else:
line1 = QLineF(xMin, line.y, xMax, line.y)
textX = 0
textY = 0
if drawLines:
if line1 is not None:
# line
drawLine(painter, line1.x1(), line1.y1(), line1.x2(),
line1.y2())
# point
x, y = line.x, line.y
smoothWidth = 8 * scale
smoothHalf = smoothWidth / 2.0
painter.save()
pointPath = QPainterPath()
x -= smoothHalf
y -= smoothHalf
pointPath.addEllipse(x, y, smoothWidth, smoothWidth)
pen = QPen(color_)
pen.setWidthF(1 * scale)
painter.setPen(pen)
if drawSelection and line.selected:
painter.fillPath(pointPath, color_)
painter.drawPath(pointPath)
painter.restore()
else:
if line.y is not None:
drawLine(painter, xMin, line.y, xMax, line.y)
elif line.x is not None:
drawLine(painter, line.x, yMin, line.x, yMax)
if drawText and line.name:
if line1 is not None:
textX = line.x
textY = line.y - 6 * scale
xAlign = "center"
else:
if line.y is not None:
fontSize = painter.font().pointSize()
textX = glyph.width + 6 * scale
textY = line.y - (fontSize / 3.5) * scale
elif line.x is not None:
textX = line.x + 6 * scale
textY = 0
xAlign = "left"
drawTextAtPoint(painter,
line.name,
textX,
textY,
scale,
xAlign=xAlign)
painter.restore()
def _drawGuidelines(painter, glyph, scale, rect, guidelines, drawLines=True,
drawText=True, drawSelection=True, color=None):
if not (drawLines or drawText):
return
xMin, yMin, width, height = rect
xMax = xMin + width
yMax = yMin + height
fontSize = painter.font().pointSize()
for line in guidelines:
color_ = color
if color_ is None:
if line.color:
color_ = colorToQColor(line.color)
else:
color_ = defaultColor("glyphGuideline")
painter.save()
painter.setPen(color)
line1 = None
if None not in (line.x, line.y):
if line.angle is not None:
# make an infinite line that intersects *(line.x, line.y)*
# 1. make horizontal line from *(line.x, line.y)* of length
# *diagonal*
diagonal = math.sqrt(width**2 + height**2)
line1 = QLineF(line.x, line.y, line.x + diagonal, line.y)
# 2. set the angle
# defcon guidelines are clockwise
line1.setAngle(line.angle)
# 3. reverse the line and set length to 2 * *diagonal*
line1.setPoints(line1.p2(), line1.p1())
line1.setLength(2 * diagonal)
else:
line1 = QLineF(xMin, line.y, xMax, line.y)
textX = 0
textY = 0
if drawLines:
if line1 is not None:
# line
drawLine(
painter, line1.x1(), line1.y1(), line1.x2(), line1.y2())
# point
x, y = line.x, line.y
smoothWidth = 8 * scale
smoothHalf = smoothWidth / 2.0
painter.save()
pointPath = QPainterPath()
x -= smoothHalf
y -= smoothHalf
pointPath.addEllipse(x, y, smoothWidth, smoothWidth)
pen = QPen(color_)
pen.setWidthF(1 * scale)
painter.setPen(pen)
if drawSelection and line.selected:
painter.fillPath(pointPath, color_)
painter.drawPath(pointPath)
painter.restore()
else:
if line.y is not None:
drawLine(painter, xMin, line.y, xMax, line.y)
elif line.x is not None:
drawLine(painter, line.x, yMin, line.x, yMax)
if drawText and line.name:
if line1 is not None:
textX = line.x
textY = line.y - 6 * scale
xAlign = "center"
else:
if line.y is not None:
textX = glyph.width + 6 * scale
textY = line.y - (fontSize / 3.5) * scale
elif line.x is not None:
textX = line.x + 6 * scale
textY = 0
xAlign = "left"
drawTextAtPoint(
painter, line.name, textX, textY, scale, xAlign=xAlign)
painter.restore()
class EdgeItem(QGraphicsLineItem):
def __init__(self,
boxName,
fromLocation,
toLocation,
guard,
reset,
scene,
parentForm,
style=Qt.SolidLine,
rect=None,
matrix=QTransform()):
super(EdgeItem, self).__init__()
self.setFlags(QGraphicsItem.ItemIsSelectable
| QGraphicsItem.ItemIsMovable
| QGraphicsItem.ItemIsFocusable)
self.style = style
self.boxName = boxName
self.guard = guard
self.reset = reset
self._fromLocation = None
self._toLocation = None
if fromLocation == None:
x1 = 10
y1 = 10
else:
x1 = fromLocation.rect.right()
y1 = fromLocation.rect.top() + fromLocation.rect.height() * 0.3
if toLocation == None:
x2 = 100
y2 = 100
else:
x2 = toLocation.rect.left()
y2 = toLocation.rect.top() + fromLocation.rect.height() * 0.3
self.parentForm = parentForm
self.source = QPointF(x1, y1)
self.dest = QPointF(x2, y2)
self.fromLocation = fromLocation
self.toLocation = toLocation
self.direction = "a"
self.myColor = Qt.black
self.setPen(
QPen(self.myColor, 2, Qt.SolidLine, Qt.RoundCap, Qt.RoundJoin))
self.line = QLineF(self.source, self.dest)
self.line.setLength(self.line.length() - 5)
self.resetLine()
self.scene = scene
scene.clearSelection()
scene.addItem(self)
self.setSelected(True)
self.setFocus()
global Dirty
Dirty = True
def drawLine2Self(self):
haveEdges = [
strDirection for strDirection in self.fromLocation.edges.values()
]
self.arcx1 = self.fromLocation.x() + self.fromLocation.rect.x(
) - 40 #-30
self.arcy1 = self.fromLocation.y() + self.fromLocation.rect.y(
) # -50#+self.fromLocation.rect.height*0.3
self.minAngle = 90
x1 = self.arcx1 + 33
y1 = self.arcy1 + 80
x2 = self.arcx1 + 40
y2 = self.arcy1 + 80
self.arcTextx = self.arcx1
self.arcTexty = self.arcy1 + 40
self.spanAngle = 180
if "top" not in haveEdges and self.fromLocation.isNameAbove == False:
self.arcx1 = self.fromLocation.x() + self.fromLocation.rect.x(
) + 10
self.arcy1 = self.fromLocation.y() + self.fromLocation.rect.y(
) - 40
x1 = self.arcx1 + 80
y1 = self.arcy1 + 40 - 7
x2 = self.arcx1 + 80
y2 = self.arcy1 + 40
self.minAngle = 0
self.arcTextx = self.arcx1 + 40
self.arcTexty = self.arcy1
elif "left" not in haveEdges:
self.arcx1 = self.fromLocation.x() + self.fromLocation.rect.x(
) - 40 #-30
self.arcy1 = self.fromLocation.y() + self.fromLocation.rect.y(
) + 10 # -50#+self.fromLocation.rect.height*0.3
self.minAngle = 90
x1 = self.arcx1 + 33
y1 = self.arcy1 + 80
x2 = self.arcx1 + 40
y2 = self.arcy1 + 80
self.arcTextx = self.arcx1
self.arcTexty = self.arcy1 + 40
elif "bottom" not in haveEdges and self.fromLocation.isNameAbove:
self.arcx1 = self.fromLocation.x() + self.fromLocation.rect.x(
) + 10
self.arcy1 = self.fromLocation.y() + self.fromLocation.rect.y(
) + self.fromLocation.rect.height() - 40
self.minAngle = 180
x1 = self.arcx1 + 80
y1 = self.arcy1 + 7 + 40
x2 = self.arcx1 + 80
y2 = self.arcy1 + 40
self.arcTextx = self.arcx1 + 40
self.arcTexty = self.arcy1 + 80
elif "right" not in haveEdges:
self.arcx1 = self.fromLocation.x() + self.fromLocation.rect.x(
) + self.fromLocation.rect.width() - 40 #-30
self.arcy1 = self.fromLocation.y() + self.fromLocation.rect.y(
) + 10 # -50#+self.fromLocation.rect.height*0.3
self.minAngle = 270
x1 = self.arcx1 + 7 + 25 + adjustX1
y1 = self.arcy1 + 80
x2 = self.arcx1 + 25 + adjustX1
y2 = self.arcy1 + 80
self.arcTextx = self.arcx1 + 80
self.arcTexty = self.arcy1 + 40
self.source = QPointF(x1, y1)
self.dest = QPointF(x2, y2)
self.line = QLineF(self.source, self.dest)
self.line.setLength(self.line.length() - 5)
#if 'time' not in listOfStrings :
# print("Yes, 'time' NOT found in List : " , listOfStrings)
def getQPixmap4Guard(self):
guardFig = Figure(figsize=(5, 0.4))
canvas = FigureCanvas(guardFig)
strData = self.guard
try:
guardFig.text(0.1, 0.3, strData, family="Consolas", fontsize=10)
except:
pass
canvas.draw()
size = canvas.size()
width, height = size.width(), size.height()
im = QImage(canvas.buffer_rgba(), width, height, QImage.Format_ARGB32)
return QPixmap(im)
def getQPixmap4Reset(self):
guardFig = Figure(figsize=(5, 0.4))
canvas = FigureCanvas(guardFig)
strData = self.reset
try:
guardFig.text(0.1, 0.3, strData, family="Consolas", fontsize=10)
except:
pass
canvas.draw()
size = canvas.size()
width, height = size.width(), size.height()
im = QImage(canvas.buffer_rgba(), width, height, QImage.Format_ARGB32)
return QPixmap(im)
def resetLine(self):
self.direction = ""
if self.fromLocation == None and self.toLocation == None:
return
if self.fromLocation == None:
#self.toLocation.edges[self.boxName]="left"
x2 = self.toLocation.x() + self.toLocation.rect.x()
y2 = self.toLocation.y() + self.toLocation.rect.x(
) + self.toLocation.rect.height() * 0.3
x1 = x2 - 30
y1 = y2
elif self.toLocation == None:
#self.fromLocation.edges[self.boxName]="right"
x1 = self.fromLocation.x() + self.fromLocation.rect.x(
) + self.fromLocation.rect.width()
y1 = self.fromLocation.y() + self.fromLocation.rect.y(
) + self.fromLocation.rect.height() * 0.3
x2 = x1 + 30
y2 = y1
else:
adjustX1 = self.fromLocation.x() + self.fromLocation.rect.x()
adjustX2 = self.toLocation.x() + self.toLocation.rect.x()
adjustY1 = self.fromLocation.y() + self.fromLocation.rect.y()
adjustY2 = self.toLocation.y() + self.toLocation.rect.y()
if self.fromLocation.boxName == self.toLocation.boxName:
self.drawLine2Self()
self.fromLocation.edgeToSelf = self.boxName
return
x_diff = self.toLocation.x() - self.fromLocation.x()
y_diff = self.toLocation.y() - self.fromLocation.y()
x_diff_standand = (self.fromLocation.rect.width() +
self.toLocation.rect.width()) / 2
y_diff_standand = (self.fromLocation.rect.height() +
self.toLocation.rect.height()) / 2
if ((abs(y_diff) < y_diff_standand)):
if x_diff > 0:
self.direction = "x>"
self.fromLocation.edges[self.boxName] = "right"
self.toLocation.edges[self.boxName] = "left"
x1 = self.fromLocation.rect.width() + adjustX1
y1 = self.fromLocation.rect.height() * 0.4 + adjustY1
x2 = adjustX2
y2 = self.toLocation.rect.height() * 0.4 + adjustY2
else:
self.direction = "x<"
self.fromLocation.edges[self.boxName] = "left"
self.toLocation.edges[self.boxName] = "right"
x1 = adjustX1
y1 = self.fromLocation.rect.height() * 0.6 + adjustY1
x2 = self.toLocation.rect.width() + adjustX2
y2 = self.toLocation.rect.height() * 0.6 + adjustY2
elif ((abs(x_diff) < x_diff_standand)):
if (y_diff > 0):
self.direction = "y>"
self.fromLocation.edges[self.boxName] = "bottom"
self.toLocation.edges[self.boxName] = "top"
x1 = self.fromLocation.rect.width() * 0.4 + adjustX1
y1 = self.fromLocation.rect.height() + adjustY1
x2 = self.toLocation.rect.width() * 0.4 + adjustX2
y2 = adjustY2
else:
self.direction = "y<"
self.fromLocation.edges[self.boxName] = "top"
self.toLocation.edges[self.boxName] = "bottom"
x1 = self.fromLocation.rect.width() * 0.6 + adjustX1
y1 = adjustY1
x2 = self.toLocation.rect.width() * 0.6 + adjustX2
y2 = self.toLocation.rect.height() + adjustY2
else:
if (x_diff > 0) and (y_diff > 0):
self.direction = "xy>"
self.fromLocation.edges[self.boxName] = "right"
self.toLocation.edges[self.boxName] = "top"
x1 = self.fromLocation.rect.width() + adjustX1
y1 = self.fromLocation.rect.height() * 0.8 + adjustY1
x2 = self.toLocation.rect.width() * 0.2 + adjustX2
y2 = adjustY2
elif ((x_diff < 0) and (y_diff < 0)):
self.direction = "xy<"
self.fromLocation.edges[self.boxName] = "left"
self.toLocation.edges[self.boxName] = "bottom"
x1 = adjustX1
y1 = self.fromLocation.rect.height() * 0.2 + adjustY1
x2 = self.toLocation.rect.width() * 0.8 + adjustX2
y2 = self.toLocation.rect.height() + adjustY2
elif (x_diff > 0) and (y_diff < 0):
self.direction = "x>y<"
self.fromLocation.edges[self.boxName] = "top"
self.toLocation.edges[self.boxName] = "left"
x1 = self.fromLocation.rect.width() * 0.8 + adjustX1
y1 = adjustY1
x2 = adjustX2
y2 = self.toLocation.rect.height() * 0.8 + adjustY2
else:
self.direction = "x<y>"
self.fromLocation.edges[self.boxName] = "bottom"
self.toLocation.edges[self.boxName] = "right"
x1 = self.fromLocation.rect.width() * 0.2 + adjustX1
y1 = adjustY1 + self.fromLocation.rect.height()
x2 = adjustX2 + self.toLocation.rect.width()
y2 = self.toLocation.rect.height() * 0.2 + adjustY2
self.direction = self.direction + " fLX:" + str(
self.fromLocation.x()) + ",fLrx" + str(
self.fromLocation.rect.x()) + ",fLrw" + str(
self.fromLocation.rect.width()) + ",Lx" + str(x1)
self.source = QPointF(x1, y1)
self.dest = QPointF(x2, y2)
self.line = QLineF(self.source, self.dest)
self.line.setLength(self.line.length() - 5)
@property
def boxName(self):
return self._boxName
@boxName.setter
def boxName(self, value):
if not isinstance(value, str):
raise ValueError('EdgeName must be an string!')
self._boxName = value
@property
def guard(self):
return self._guard
@guard.setter
def guard(self, value):
if not isinstance(value, str):
raise ValueError('EdgeName must be an string!')
self._guard = value
@property
def reset(self):
return self._reset
@reset.setter
def reset(self, value):
if not isinstance(value, str):
raise ValueError('EdgeName must be an string!')
self._reset = value
def toSaveJson(self):
data = {
"type": "Edge",
"boxName": self.boxName,
"strFromLocation": self.fromLocation.boxName,
"strToLocation": self.toLocation.boxName,
"guard": self.guard,
"reset": self.reset,
"style": self.style,
"rotation": self.rotation()
}
return data
@property
def fromLocation(self):
return self._fromLocation
@fromLocation.setter
def fromLocation(self, value):
if value != None:
if not isinstance(value, LocationItem):
raise ValueError('LocationName must be a LocationItem!')
self._fromLocation = value
self.resetLine()
@property
def toLocation(self):
return self._toLocation
@toLocation.setter
def toLocation(self, value):
if value != None:
if not isinstance(value, LocationItem):
raise ValueError('LocationName must be a LocationItem!')
self._toLocation = value
self.resetLine()
def parentWidget(self):
return self.scene.views()[0]
def itemChange(self, change, variant):
if change != QGraphicsItem.ItemSelectedChange:
global Dirty
Dirty = True
return QGraphicsLineItem.itemChange(self, change, variant)
def mouseDoubleClickEvent(self, event):
dialog = edgeItemDlg(self, self.parentWidget(), self.parentWidget(),
self.scene, self.parentForm)
dialog.exec_()
def paint(self, QPainter, QStyleOptionGraphicsItem, QWidget_widget=None):
# setPen
pen = QPen()
pen.setWidth(1)
pen.setJoinStyle(Qt.MiterJoin) #让箭头变尖
QPainter.setPen(pen)
# draw line
QPainter.drawLine(self.line)
ptextx = (self.line.x1() + self.line.x2()) / 2
ptexty = (self.line.y1() + self.line.y2()) / 2
ptexty -= 5
ptextx -= len(self.boxName) * 3
#QPainter.drawText(QPointF(ptextx, ptexty+20), self.direction)
# setBrush
brush = QBrush()
brush.setColor(Qt.black)
brush.setStyle(Qt.SolidPattern)
QPainter.setBrush(brush)
v = self.line.unitVector()
v.setLength(5)
v.translate(QPointF(self.line.dx(), self.line.dy()))
n = v.normalVector()
n.setLength(n.length() * 0.5)
n2 = n.normalVector().normalVector()
p1 = v.p2()
p2 = n.p2()
p3 = n2.p2()
# 方法1
QPainter.drawLine(self.line)
QPainter.drawPolygon(p1, p2, p3)
if self.fromLocation is not None and self.toLocation is not None:
if self.fromLocation.boxName == self.toLocation.boxName:
QPainter.drawArc(self.arcx1, self.arcy1, 80, 80,
self.minAngle * 16, self.spanAngle * 16)
ptextx = self.arcTextx
ptexty = self.arcTexty
#QPainter.drawArc(self.arcx1, self.arcy1+100, 50, 50, 270*16, 89*16)
#QPainter.drawArc(self.arcx1, self.arcy1+200, 50, 50, 0*16, 89*16)
#QPainter.drawArc(self.arcx1, self.arcy1+300, 50, 50, 270*16, 180*16)
#QPainter.drawArc(self.arcx1, self.arcy1+400, 50, 50, 270*16, 270*16)
#QPainter.drawArc(self.arcx1, self.arcy1+500, 50, 50, 180*16, 89*16)
QPainter.drawText(QPointF(ptextx, ptexty), self.boxName)
#QPainter.drawRect(self.arcx1, self.arcy1, 50, 50)
self.scene.update()
class LineItem(QGraphicsLineItem):
def __init__(self,
boxName,
fromBox,
toBox,
position,
scene,
parentForm,
style=Qt.SolidLine,
rect=None,
matrix=QTransform()):
super(LineItem, self).__init__()
self.setFlags(QGraphicsItem.ItemIsSelectable
| QGraphicsItem.ItemIsMovable
| QGraphicsItem.ItemIsFocusable)
self.style = style
self.boxName = boxName
self._fromBox = None
self._toBox = None
if fromBox == None:
x1 = 10
y1 = 10
else:
x1 = fromBox.boundingRect().right()
y1 = fromBox.boundingRect().top(
) + fromBox.boundingRect().height() * 0.3
if toBox == None:
x2 = 100
y2 = 100
else:
x2 = toBox.boundingRect().left()
y2 = toBox.boundingRect().top(
) + fromBox.boundingRect().height() * 0.3
self.parentForm = parentForm
self.source = QPointF(x1, y1)
self.dest = QPointF(x2, y2)
self.fromBox = fromBox
self.toBox = toBox
self.direction = "a"
self.myColor = Qt.black
self.setPen(
QPen(self.myColor, 2, Qt.SolidLine, Qt.RoundCap, Qt.RoundJoin))
self.line = QLineF(self.source, self.dest)
self.line.setLength(self.line.length() - 5)
self.resetLine()
self.scene = scene
scene.clearSelection()
scene.addItem(self)
self.setSelected(True)
self.setFocus()
global Dirty
Dirty = True
def resetLine(self):
if self.fromBox == None and self.toBox == None:
return
if self.fromBox == None:
x2 = self.toBox.x()
y2 = self.toBox.y() + self.toBox.boundingRect().height() * 0.3
x1 = x2 - 30
y1 = y2
elif self.toBox == None:
x1 = self.fromBox.x() + self.fromBox.boundingRect().width()
y1 = self.fromBox.y() + self.fromBox.boundingRect().height() * 0.3
x2 = x1 + 30
y2 = y1
else:
x_diff = self.toBox.x() - self.fromBox.x()
y_diff = self.toBox.y() - self.fromBox.y()
x_diff_standand = (self.fromBox.boundingRect().width() +
self.toBox.boundingRect().width()) / 2
y_diff_standand = (self.fromBox.boundingRect().height() +
self.toBox.boundingRect().height()) / 2
if ((abs(y_diff) < y_diff_standand)):
if x_diff > 0:
self.direction = "x>"
x1 = self.fromBox.x() + self.fromBox.boundingRect().width()
y1 = self.fromBox.y(
) + self.fromBox.boundingRect().height() * 0.3
x2 = self.toBox.x()
y2 = self.toBox.y(
) + self.toBox.boundingRect().height() * 0.3
else:
self.direction = "x<"
x1 = self.fromBox.x()
y1 = self.fromBox.y(
) + self.fromBox.boundingRect().height() * 0.67
x2 = self.toBox.x() + self.toBox.boundingRect().width()
y2 = self.toBox.y(
) + self.toBox.boundingRect().height() * 0.67
elif ((abs(x_diff) < x_diff_standand)):
if (y_diff > 0):
self.direction = "y>"
x1 = self.fromBox.x(
) + self.fromBox.boundingRect().width() * 0.3
y1 = self.fromBox.y() + self.fromBox.boundingRect().height(
)
x2 = self.toBox.x(
) + self.toBox.boundingRect().width() * 0.3
y2 = self.toBox.y()
else:
self.direction = "y<"
x1 = self.fromBox.x(
) + self.fromBox.boundingRect().width() * 0.67
y1 = self.fromBox.y()
x2 = self.toBox.x(
) + self.toBox.boundingRect().width() * 0.67
y2 = self.toBox.y() + self.toBox.boundingRect().height()
else:
if (x_diff > 0) and (y_diff > 0):
self.direction = "xy>"
x1 = self.fromBox.x() + self.fromBox.boundingRect().width()
y1 = self.fromBox.y(
) + self.fromBox.boundingRect().height() * 0.87
x2 = self.toBox.x(
) + self.toBox.boundingRect().width() * 0.13
y2 = self.toBox.y()
elif ((x_diff < 0) and (y_diff < 0)):
self.direction = "xy<"
x1 = self.fromBox.x()
y1 = self.fromBox.y(
) + self.fromBox.boundingRect().height() * 0.13
x2 = self.toBox.x(
) + self.toBox.boundingRect().width() * 0.87
y2 = self.toBox.y() + self.toBox.boundingRect().height()
elif (x_diff > 0) and (y_diff < 0):
self.direction = "x>y<"
x1 = self.fromBox.x(
) + self.fromBox.boundingRect().width() * 0.87
y1 = self.fromBox.y()
x2 = self.toBox.x()
y2 = self.toBox.y(
) + self.toBox.boundingRect().height() * 0.87
else:
self.direction = "x<y>"
x1 = self.fromBox.x(
) + self.fromBox.boundingRect().width() * 0.13
y1 = self.fromBox.y() + self.fromBox.boundingRect().height(
)
x2 = self.toBox.x() + self.toBox.boundingRect().width()
y2 = self.toBox.y(
) + self.toBox.boundingRect().height() * 0.13
self.source = QPointF(x1, y1)
self.dest = QPointF(x2, y2)
self.line = QLineF(self.source, self.dest)
self.line.setLength(self.line.length() - 5)
@property
def boxName(self):
return self._boxName
@boxName.setter
def boxName(self, value):
if not isinstance(value, str):
raise ValueError('boxName must be an string!')
self._boxName = value
def toSaveJson(self):
data = {
"type": "Line",
"boxName": self.boxName,
"strFromBox": self.fromBox.boxName,
"strToBox": self.toBox.boxName,
"style": self.style,
"rotation": self.rotation()
}
return data
@property
def fromBox(self):
return self._fromBox
@fromBox.setter
def fromBox(self, value):
if value != None:
if not isinstance(value, QGraphicsTextItem):
raise ValueError('boxName must be an string!')
self._fromBox = value
self.resetLine()
@property
def toBox(self):
return self._toBox
@toBox.setter
def toBox(self, value):
if value != None:
if not isinstance(value, QGraphicsTextItem):
raise ValueError('boxName must be an string!')
self._toBox = value
self.resetLine()
def parentWidget(self):
return self.scene().views()[0]
def itemChange(self, change, variant):
if change != QGraphicsItem.ItemSelectedChange:
global Dirty
Dirty = True
return QGraphicsLineItem.itemChange(self, change, variant)
def mouseDoubleClickEvent(self, event):
dialog = LineItemDlg(self, self.parentWidget(), self.parentWidget(),
self.scene, self.parentForm)
dialog.exec_()
def paint(self, QPainter, QStyleOptionGraphicsItem, QWidget_widget=None):
# setPen
pen = QPen()
pen.setWidth(1)
pen.setJoinStyle(Qt.MiterJoin) #让箭头变尖
QPainter.setPen(pen)
# draw line
QPainter.drawLine(self.line)
ptextx = (self.line.x1() + self.line.x2()) / 2
ptexty = (self.line.y1() + self.line.y2()) / 2
ptexty -= 5
ptextx -= len(self.boxName) * 3
QPainter.drawText(QPointF(ptextx, ptexty), self.boxName)
#Painter.drawText(QPointF(ptextx, ptexty+20), self.direction)
# setBrush
brush = QBrush()
brush.setColor(Qt.black)
brush.setStyle(Qt.SolidPattern)
QPainter.setBrush(brush)
v = self.line.unitVector()
v.setLength(5)
v.translate(QPointF(self.line.dx(), self.line.dy()))
n = v.normalVector()
n.setLength(n.length() * 0.5)
n2 = n.normalVector().normalVector()
p1 = v.p2()
p2 = n.p2()
p3 = n2.p2()
# 方法1
QPainter.drawLine(self.line)
QPainter.drawPolygon(p1, p2, p3)
QPainter.drawArc(10, 10, 50, 50, 0, 180 * 16)
v = self.line.unitVector()
v.setLength(5)
v.translate(QPointF(10, 60))
n = v.normalVector()
n.setLength(n.length() * 0.5)
n2 = n.normalVector().normalVector()
p1 = v.p2()
p2 = n.p2()
p3 = n2.p2()
# 方法1
#QPainter.drawLine(self.line)
QPainter.drawPolygon(p1, p2, p3)
self.scene.update()
def line_q_to_s(line: QLineF):
return Line(Point(line.x1(), line.y1()), Point(line.x2(), line.y2()))
def draw_axis(painter: QtGui.QPainter, axis: QtCore.QLineF, pen,
dash_pen) -> None:
painter.setPen(pen)
painter.drawLine(0, 0, int(axis.x1()), int(axis.y1()))
painter.setPen(dash_pen)
painter.drawLine(0, 0, int(axis.x2()), int(axis.y2()))
