class RoundAnimation(QPropertyAnimation):
def __init__(self, target, prop, parent=None):
super(RoundAnimation, self).__init__(target, prop, parent)
def updateCurrentTime(self, currentTime):
self.path = QPainterPath()
if self.path.isEmpty():
end = self.endValue()
start = self.startValue()
self.path.addEllipse(QRectF(start, end))
duration = self.duration()
if duration == 0:
progress = 1.0
else:
progress = (((currentTime - 1) % duration) + 1) / float(duration)
easedProgress = self.easingCurve().valueForProgress(progress)
if easedProgress > 1.0:
easedProgress -= 1.0
elif easedProgress < 0:
easedProgress += 1.0
pt = self.path.pointAtPercent(easedProgress)
self.updateCurrentValue(pt)
class Animation(QPropertyAnimation):
'''
动画类
'''
def __init__(self, target, prop):
'''
target, prop这个两个参数分别对应：动画的产生对象和setter
'''
super(Animation, self).__init__(target, prop)
def updateCurrentTime(self, currentTime):
'''
currentTime（此属性保存动画的当前时间和进度）总是在变化的。
每次动画的currentTime更改时，都会调用updateCurrentTime()函数
'''
self.m_path = QPainterPath()
if self.m_path.isEmpty():
end = self.endValue()
start = self.startValue()
# endValue()、startValue()分别表示动画的结束值和起始值
self.m_path.addEllipse(QRectF(start, end))
# 在指定的boundingRectangle内创建一个椭圆，这里是QRectF(start, end)，并将其作为封闭的子路径添加到painter路径中。
dura = self.duration()
progress = (((currentTime - 1) % dura) + 1) / float(dura)
# duration()此属性保存动画的持续时间（以毫秒为单位）。 默认持续时间为250毫秒。progress则描绘了当前的完成比率。
easedProgress = self.easingCurve().valueForProgress(progress)
if easedProgress > 1.0:
easedProgress -= 1.0
elif easedProgress < 0:
easedProgress += 1.0
# 返回进度缓和曲线的有效进度。 进度必须介于0和1之间，而返回的有效进度可能超出这些范围。大于1就减1，小于0就加1。
pt = self.m_path.pointAtPercent(easedProgress)
# 返回当前路径的百分比easedProgress处的点。
# 参数easedProgress必须介于0和1之间。当存在曲线时，百分比参数被映射到贝塞尔方程的t参数。
self.updateCurrentValue(pt)
# 每次动画的当前值更改时，都会调用updateCurrentValue()。pt参数是新的当前值。没有这个函数动画动不了。
self.valueChanged.emit(pt)
def startAnimation(self, startx, starty, endx, endy, duration):
'''
setStartValue()、setEndValue()分别表示设置动画的起止位置，setDuration()设置动画的运行时间。
'''
self.setStartValue(QPointF(startx, starty))
self.setEndValue(QPointF(endx, endy))
self.setDuration(duration)
self.setLoopCount(-1)
# 值为-1时，动画将永远循环直至停止
self.start()
class _MoveAnimation(QPropertyAnimation):
'''move animation'''
MOVE1 = 1
MOVE2 = 2
MOVE3 = 3
def __init__(self, target, parent, easing=QEasingCurve.Custom):
super(_MoveAnimation, self).__init__(target, b"pos")
self.parent = parent
self.easing = easing
if easing != -1:
self.setEasingCurve(easing)
self.m_path = QPainterPath()
def setMoveType(self, _type):
self._type = _type
def updateCurrentTime(self, currentTime):
if self.m_path.isEmpty():
# end = self.endValue()
start = self.startValue()
if self._type == self.MOVE1:
end = QPoint(self.parent.width() / 4.0, 0)
elif self._type == self.MOVE2:
end = QPoint((self.parent.width() / 4.0) * 3.0, 0)
if not start:
start = QPoint(self.parent.width() / 4.0, 0)
# 第二个移动没有设置开始坐标,这里以第一个移动结束为开始
elif self._type == self.MOVE3:
if not start:
start = QPoint((self.parent.width() / 4.0) * 3.0, 0)
# 第三个移动没有设置开始坐标,这里以第二个移动结束为开始
end = QPoint(self.parent.width(), 0)
self.m_path.moveTo(start)
self.m_path.addEllipse(QRectF(start, end))
dura = self.duration()
if dura == 0:
progress = 1.0
else:
progress = (((currentTime - 1) % dura) + 1) / float(dura)
easedProgress = self.easingCurve().valueForProgress(progress)
if easedProgress > 1.0:
easedProgress -= 1.0
elif easedProgress < 0:
easedProgress += 1.0
pt = self.m_path.pointAtPercent(easedProgress)
self.updateCurrentValue(pt)
self.valueChanged.emit(pt)
super(_MoveAnimation, self).updateCurrentTime(currentTime)
class _MoveAnimation(QPropertyAnimation):
'''move animation'''
MOVE1 = 1
MOVE2 = 2
MOVE3 = 3
def __init__(self, target, parent, easing = QEasingCurve.Custom):
super(_MoveAnimation, self).__init__(target, b"pos")
self.parent = parent
self.easing = easing
if easing != -1:
self.setEasingCurve(easing)
self.m_path = QPainterPath()
def setMoveType(self, _type):
self._type = _type
def updateCurrentTime(self, currentTime):
if self.m_path.isEmpty():
# end = self.endValue()
start = self.startValue()
if self._type == self.MOVE1:
end = QPoint(self.parent.width() / 4.0, 0)
elif self._type == self.MOVE2:
end = QPoint((self.parent.width() / 4.0) * 3.0, 0)
if not start:
start = QPoint(self.parent.width() / 4.0, 0)
# 第二个移动没有设置开始坐标,这里以第一个移动结束为开始
elif self._type == self.MOVE3:
if not start:
start = QPoint((self.parent.width() / 4.0) * 3.0, 0)
# 第三个移动没有设置开始坐标,这里以第二个移动结束为开始
end = QPoint(self.parent.width(), 0)
self.m_path.moveTo(start)
self.m_path.addEllipse(QRectF(start, end))
dura = self.duration()
if dura == 0:
progress = 1.0
else:
progress = (((currentTime - 1) % dura) + 1) / float(dura)
easedProgress = self.easingCurve().valueForProgress(progress)
if easedProgress > 1.0:
easedProgress -= 1.0
elif easedProgress < 0:
easedProgress += 1.0
pt = self.m_path.pointAtPercent(easedProgress)
self.updateCurrentValue(pt)
self.valueChanged.emit(pt)
super(_MoveAnimation, self).updateCurrentTime(currentTime)
class _MpcbAnimation(QPropertyAnimation):
def __init__(self, parent, target, index, easing = QEasingCurve.InQuad):
super(_MpcbAnimation, self).__init__(target, b"pos")
self.parent = parent
self.m_pathType = 1
self.easing = easing
self.createAnimation(target, index)
def createAnimation(self, target, index):
'''创建动画'''
self.m_path = QPainterPath()
if self.easing != -1:
self.setEasingCurve(self.easing)
self.setStartValue(QPointF(0, 0))
self.setEndValue(QPointF(90, 90))
self.setDuration(2000)
self.setLoopCount(-1)
def updateCurrentTime(self, currentTime):
if self.m_pathType:
if self.m_path.isEmpty():
end = self.endValue()
start = self.startValue()
self.m_path.moveTo(start)
self.m_path.addEllipse(QRectF(start, end))
dura = self.duration()
if dura == 0:
progress = 1.0
else:
progress = (((currentTime - 1) % dura) + 1) / float(dura)
easedProgress = self.easingCurve().valueForProgress(progress)
if easedProgress > 1.0:
easedProgress -= 1.0
elif easedProgress < 0:
easedProgress += 1.0
pt = self.m_path.pointAtPercent(easedProgress)
self.updateCurrentValue(pt)
self.valueChanged.emit(pt)
else:
super(_MpcbAnimation, self).updateCurrentTime(currentTime)
class _MpcbAnimation(QPropertyAnimation):
def __init__(self, parent, target, index, easing=QEasingCurve.InQuad):
super(_MpcbAnimation, self).__init__(target, b"pos")
self.parent = parent
self.m_pathType = 1
self.easing = easing
self.createAnimation(target, index)
def createAnimation(self, target, index):
'''创建动画'''
self.m_path = QPainterPath()
if self.easing != -1:
self.setEasingCurve(self.easing)
self.setStartValue(QPointF(0, 0))
self.setEndValue(QPointF(90, 90))
self.setDuration(2000)
self.setLoopCount(-1)
def updateCurrentTime(self, currentTime):
if self.m_pathType:
if self.m_path.isEmpty():
end = self.endValue()
start = self.startValue()
self.m_path.moveTo(start)
self.m_path.addEllipse(QRectF(start, end))
dura = self.duration()
if dura == 0:
progress = 1.0
else:
progress = (((currentTime - 1) % dura) + 1) / float(dura)
easedProgress = self.easingCurve().valueForProgress(progress)
if easedProgress > 1.0:
easedProgress -= 1.0
elif easedProgress < 0:
easedProgress += 1.0
pt = self.m_path.pointAtPercent(easedProgress)
self.updateCurrentValue(pt)
self.valueChanged.emit(pt)
else:
super(_MpcbAnimation, self).updateCurrentTime(currentTime)
class Animation(QPropertyAnimation):
LinearPath, CirclePath = range(2)
def __init__(self, target, prop):
super(Animation, self).__init__(target, prop)
self.setPathType(Animation.LinearPath)
def setPathType(self, pathType):
self.m_pathType = pathType
self.m_path = QPainterPath()
def updateCurrentTime(self, currentTime):
if self.m_pathType == Animation.CirclePath:
if self.m_path.isEmpty():
end = self.endValue()
start = self.startValue()
self.m_path.moveTo(start)
self.m_path.addEllipse(QRectF(start, end))
dura = self.duration()
if dura == 0:
progress = 1.0
else:
progress = (((currentTime - 1) % dura) + 1) / float(dura)
easedProgress = self.easingCurve().valueForProgress(progress)
if easedProgress > 1.0:
easedProgress -= 1.0
elif easedProgress < 0:
easedProgress += 1.0
pt = self.m_path.pointAtPercent(easedProgress)
self.updateCurrentValue(pt)
self.valueChanged.emit(pt)
else:
super(Animation, self).updateCurrentTime(currentTime)
class Animation(QPropertyAnimation):
LinearPath, CirclePath = range(2)
def __init__(self, target, prop):
super(Animation, self).__init__(target, prop)
self.setPathType(Animation.LinearPath)
def setPathType(self, pathType):
self.m_pathType = pathType
self.m_path = QPainterPath()
def updateCurrentTime(self, currentTime):
if self.m_pathType == Animation.CirclePath:
if self.m_path.isEmpty():
end = self.endValue()
start = self.startValue()
self.m_path.moveTo(start)
self.m_path.addEllipse(QRectF(start, end))
dura = self.duration()
if dura == 0:
progress = 1.0
else:
progress = (((currentTime - 1) % dura) + 1) / float(dura)
easedProgress = self.easingCurve().valueForProgress(progress)
if easedProgress > 1.0:
easedProgress -= 1.0
elif easedProgress < 0:
easedProgress += 1.0
pt = self.m_path.pointAtPercent(easedProgress)
self.updateCurrentValue(pt)
self.valueChanged.emit(pt)
else:
super(Animation, self).updateCurrentTime(currentTime)
class BorderItem(QGraphicsObject):
def __init__(self,
scene,
view_scale,
shape,
transform=QTransform(),
parent=None):
super(BorderItem, self).__init__(parent)
self.setTransform(transform)
self.shape = shape
self._item_path = QPainterPath(QPoint(0, 0))
self._pen = QPen()
self._pen.setWidthF(adjust_pen_width(PEN_STANDARD_WIDTH, view_scale))
# 设置蚂蚁线数据
self._line_len = 4
self._line_step = .2
self._line_speed = 100
self._line_color = Qt.black
# 线条的长度
self._dashes = 4
# 空白长度
self._spaces = 10
self._dash_pattern = [self._line_len] * 20
self._timer = QTimer()
self._timer.timeout.connect(self.update_value)
if scene:
scene.clearSelection()
scene.addItem(self)
def is_empty(self):
return self._item_path.isEmpty()
def get_path(self):
return self._item_path
def get_scene_path(self):
return self.mapToScene(self.get_path())
def copy(self):
new_item = SelectionItem(position=self.scenePos(),
scene=None,
view_scale=1,
path=self._item_path,
shape=self.get_shape(),
transform=self.transform(),
parent=self.parent())
new_item.pen = self.pen
return new_item
def set_item_path_by_size(self, width=0, height=0):
self._item_path = QPainterPath(QPoint(0, 0))
self._item_path.addRect(QRectF(0, 0, width, height))
self.update(self.boundingRect())
def set_item_path_by_path(self, path):
self._item_path = path
def set_pen_width_by_scale(self, width: [int, float]):
pen_width = adjust_pen_width(PEN_STANDARD_WIDTH, width)
self._pen.setWidthF(pen_width)
def set_pen_width_by_width(self, width: [int, float]):
if isinstance(width, int):
self._pen.setWidth(width)
elif isinstance(width, float):
self._pen.setWidthF(width)
@property
def pen(self):
return self._pen
@pen.setter
def pen(self, new_pen: QPen):
self._pen = new_pen
def update_value(self):
""""""
if self._dashes >= self._line_len and self._spaces >= self._line_len:
self._dashes = self._spaces = 0.
if self._dashes <= 0 and self._spaces < self._line_len:
self._spaces += self._line_step
elif self._dashes < self._line_len <= self._spaces:
self._dashes += self._line_step
self._dash_pattern[0] = self._dashes
self._dash_pattern[1] = self._spaces
self.update(self.boundingRect())
def add_area(self, path: QPainterPath):
"""TODO"""
def cut_area(self, path: QPainterPath):
"""TODO"""
def combine_area(self, path: QPainterPath):
"""TODO"""
def intersects(self, other) -> bool:
p1 = self.mapToScene(self.get_path())
p2 = other.mapToScene(other.get_path())
return p1.intersects(p2)
def shape(self):
return self._item_path
# 继承QGraphicsItem类必须实现 boundingRect() paint()两个方法
# 返回本item的 包围和矩形 QRectF 用于item的点击等判断
def boundingRect(self):
return self._item_path.boundingRect().adjusted(0, 0, 2, 2)
def paint(self, painter: QPainter, option, widget=None) -> None:
self._pen.setColor(Qt.white)
self._pen.setStyle(Qt.SolidLine)
painter.setPen(self._pen)
painter.drawPath(self._item_path)
self._pen.setColor(Qt.black)
self._pen.setDashPattern(self._dash_pattern)
painter.setPen(self._pen)
painter.drawPath(self._item_path)
def __add__(self, other):
"""
轮廓 +operation
:param other:
:return: self
"""
p1 = self.mapToScene(self._item_path)
p2 = other.mapToScene(other.get_path())
new_path = self.mapFromScene(p1 + p2)
new_item = self.copy()
new_item.set_item_path_by_path(new_path)
return new_item
def __iadd__(self, other):
"""
轮廓 +=operation
:param other:
:return: self
"""
p1 = self.mapToScene(self._item_path)
p2 = other.mapToScene(other.get_path())
new_path = self.mapFromScene(p1 + p2)
new_path.closeSubpath()
self._item_path = new_path
return self
def __sub__(self, other):
"""
轮廓 -operation
:param other:
:return: self
"""
p1 = self.mapToScene(self._item_path)
p2 = other.mapToScene(other.get_path())
new_path = self.mapFromScene(p1 - p2)
new_path.closeSubpath()
new_item = self.copy()
new_item.set_item_path_by_path(new_path)
return new_item
def __isub__(self, other):
"""
轮廓 -=operation
:param other:
:return: self
"""
p1 = self.mapToScene(self._item_path)
p2 = other.mapToScene(other.get_path())
new_path = self.mapFromScene(p1 - p2)
new_path.closeSubpath()
self._item_path = new_path
self.update()
return self
def __and__(self, other):
"""
轮廓 &operation
:param other:
:return: self
"""
p1 = self.mapToScene(self._item_path)
p2 = other.mapToScene(other.get_path())
new_path = self.mapFromScene(p1 & p2)
new_path.closeSubpath()
new_item = self.copy()
new_item.set_item_path_by_path(new_path)
return new_item
def __iand__(self, other):
"""
轮廓 &=operation
:param other:
:return: self
"""
p1 = self.mapToScene(self._item_path)
p2 = other.mapToScene(other.get_path())
self._item_path = self.mapFromScene(p1 & p2)
self._item_path.closeSubpath()
self.update()
return self
class GraphicsPathObject(QGraphicsObject):
"""A QGraphicsObject subclass implementing an interface similar to
QGraphicsPathItem, and also adding a positionChanged() signal
"""
positionChanged = Signal([], ["QPointF"])
def __init__(self, parent=None, **kwargs):
QGraphicsObject.__init__(self, parent, **kwargs)
self.setFlag(QGraphicsObject.ItemSendsGeometryChanges)
self.__path = QPainterPath()
self.__brush = QBrush(Qt.NoBrush)
self.__pen = QPen()
self.__boundingRect = None
def setPath(self, path):
"""Set the items `path` (:class:`QPainterPath`).
"""
if not isinstance(path, QPainterPath):
raise TypeError("%r, 'QPainterPath' expected" % type(path))
if self.__path != path:
self.prepareGeometryChange()
# Need to store a copy of object so the shape can't be mutated
# without properly updating the geometry.
self.__path = QPainterPath(path)
self.__boundingRect = None
self.update()
def path(self):
"""Return the items path.
"""
return QPainterPath(self.__path)
def setBrush(self, brush):
"""Set the items `brush` (:class:`QBrush`)
"""
if not isinstance(brush, QBrush):
brush = QBrush(brush)
if self.__brush != brush:
self.__brush = QBrush(brush)
self.update()
def brush(self):
"""Return the items brush.
"""
return QBrush(self.__brush)
def setPen(self, pen):
"""Set the items outline `pen` (:class:`QPen`).
"""
if not isinstance(pen, QPen):
pen = QPen(pen)
if self.__pen != pen:
self.prepareGeometryChange()
self.__pen = QPen(pen)
self.__boundingRect = None
self.update()
def pen(self):
"""Return the items pen.
"""
return QPen(self.__pen)
def paint(self, painter, option, widget=None):
if self.__path.isEmpty():
return
painter.save()
painter.setPen(self.__pen)
painter.setBrush(self.__brush)
painter.drawPath(self.__path)
painter.restore()
def boundingRect(self):
if self.__boundingRect is None:
br = self.__path.controlPointRect()
pen_w = self.__pen.widthF()
self.__boundingRect = br.adjusted(-pen_w, -pen_w, pen_w, pen_w)
return self.__boundingRect
def shape(self):
return shapeFromPath(self.__path, self.__pen)
def itemChange(self, change, value):
if change == QGraphicsObject.ItemPositionHasChanged:
pos = qunwrap(value)
self.positionChanged.emit()
self.positionChanged[QPointF].emit(pos)
return QGraphicsObject.itemChange(self, change, value)