def __get_bezier_middle(self, bezier: QPainterPath) -> QPointF:
"""
Get the point in the middle of a bezier curve.
"""
percent_middle = bezier.percentAtLength(
bezier.length() / 2)
return bezier.pointAtPercent(percent_middle)
class Window(QDialog):
def __init__(self):
super().__init__()
self.dialog = uic.loadUi("demoAnimation2.ui",
self) # načtení formuláře
self.show()
self.path = QPainterPath()
self.path.moveTo(30, 30)
self.path.cubicTo(30, 30, 80, 180, 180, 170)
self.labelPic.pos = QPointF(20, 20)
def paintEvent(self, e):
qp = QPainter()
qp.begin(self)
qp.drawPath(self.path)
qp.end()
def startAnimation(self):
self.anim = QPropertyAnimation(
self.labelPic,
b"pos") # vytvoření objektu třídy QPropertyAnimation
self.anim.setDuration(4000) # prodlevy při animaci
self.anim.setStartValue(QPointF(20, 20))
positionValues = [n / 80 for n in range(0, 50)]
for i in positionValues:
self.anim.setKeyValueAt(i, self.path.pointAtPercent(i))
self.anim.setEndValue(QPointF(160, 150))
self.anim.start()
class MyForm(QDialog):
def __init__(self):
super().__init__()
self.ui=Ui_Dialog()
self.ui.setupUi(self)
self.ui.pushButtonMoveCurve.clicked.connect(self.startAnimation)
self.path = QPainterPath()
self.path.moveTo(30, 30)
self.path.cubicTo(30, 30, 80, 180, 180, 170)
self.ui.labelpic.pos=QPointF(20,20)
def paintEvent(self, e):
qp = QPainter()
qp.begin(self)
qp.drawPath(self.path)
qp.end()
def startAnimation(self):
self.anim = QPropertyAnimation(self.ui.labelpic, b'geometry')
self.anim.setDuration(10000)
self.anim.setStartValue(QPointF(20, 20))
positionValues = [n / 80 for n in range(0, 50)]
for i in positionValues:
self.anim.setKeyValueAt(i, self.path.pointAtPercent(i))
self.anim.setEndValue(QPointF(160, 150))
self.anim.start()
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)
def set_shape(self, width, height):
''' Define the symbol shape '''
circ = min(width, height)
path = QPainterPath()
path.addEllipse(0, 0, circ, circ)
point1 = path.pointAtPercent(0.625)
point2 = path.pointAtPercent(0.125)
point3 = path.pointAtPercent(0.875)
point4 = path.pointAtPercent(0.375)
path.moveTo(point1)
path.lineTo(point2)
path.moveTo(point3)
path.lineTo(point4)
self.setPath(path)
# call Join superclass, otherwise symbol will take Join shape
super(Join, self).set_shape(circ, circ)
def updatePath(self):
end_hook = self.endSocket()
if end_hook is None:
return
self.prepareGeometryChange()
end_pos = self.mapFromItem(end_hook, 0.0,
0.0) + end_hook.boundingRect().center()
if self._curve:
if not self._keyPoints:
tangent_length = (abs(end_pos.x()) / 2.0) + (abs(end_pos.y()) /
4.0)
tangent_length2 = tangent_length
else:
first_pos = self._keyPoints[0]
tangent_length = (abs(first_pos.x()) /
2.0) + (abs(first_pos.y()) / 4.0)
last_pos = self._keyPoints[-1]
last_segment = end_pos - last_pos
tangent_length2 = (abs(last_segment.x()) /
2.0) + (abs(last_segment.y()) / 4.0)
spread = 60.0 / 180.0 * pi
# Find connection index
index, number_connections = self.startSocket().getIndexInfo(self)
dev = (index - number_connections / 2.0 + 0.5) * min(
spread, pi / (number_connections + 2))
tx = tangent_length * cos(dev)
ty = tangent_length * sin(dev)
start_tangent = QPointF(tx, ty)
end_tangent = QPointF(end_pos.x() - tangent_length2, end_pos.y())
path = QPainterPath()
path.cubicTo(start_tangent, end_tangent, end_pos)
# Dot styles are used for relationships
else:
path = QPainterPath()
path.lineTo(end_pos)
stroke_width = self._pen.widthF()
rect = path.boundingRect().adjusted(-stroke_width, -stroke_width,
stroke_width, stroke_width)
# draw widget
center_widget = self._centerWidget
if center_widget is not None:
center = path.pointAtPercent(0.5)
center_widget.onUpdated(center, text=str(self.index))
self._path = path
self._rect = rect
class MyDialog(QDialog):
def __init__(self):
super().__init__()
self.ui = Ui_Dialog()
self.ui.setupUi(self)
self.pixmap = QPixmap()
self.pixmap.load('game_map.png')
self.item = QGraphicsPixmapItem(self.pixmap)
self.scene = QGraphicsScene()
self.scene.addItem(self.item)
self.ui.graphicsView.setScene(self.scene)
self.ui.pushButton.clicked.connect(self.startanimation)
self.path = QPainterPath()
self.path.moveTo(30,30)
self.path.cubicTo(30,30,80,180,180,170)
self.ui.label.pos = QPointF(20,20)
self.pos1 = [0,0]
self.pos2 = [0,0]
def mousePressEvent(self, event):
if event.buttons() & QtCore.Qt.LeftButton:
self.pos1[0] = event.x()
self.pos1[1] = event.y()
def mouseReleaseEvent(self, event):
self.pos2[0] = event.x()
self.pos2[1] = event.y()
self.update()
def paintEvent(self, event):
width = self.pos2[0] - self.pos1[0]
height = self.pos2[1] - self.pos1[1]
rect = QRect(self.pos1[0],self.pos1[1],width,height)
qp = QPainter()
qp.begin(self)
pen = QPen(Qt.red,3)
pen.setStyle(Qt.DotLine)
qp.setPen(pen)
qp.drawArc(rect,0,360*16)
qp.end()
# def paintEvent(self,e):
# qp = QPainter()
# qp.begin(self)
# qp.drawPath(self.path)
# qp.end()
def startanimation(self):
self.anim = QPropertyAnimation(self.ui.label, b'pos')
self.anim.setDuration(4000)
self.anim.setStartValue(QPointF(20,20))
pos = [n/80 for n in range(0,50)]
for i in pos:
self.anim.setKeyValueAt(i,self.path.pointAtPercent(i))
self.anim.setEndValue(QPointF(160,150))
self.anim.start()
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)
def reshape(self):
''' Update the connection or arrow shape '''
shape = QPainterPath()
shape.moveTo(self.start_point)
for point in self.middle_points:
shape.lineTo(point)
shape.lineTo(self.end_point)
# If required draw an arrow head (e.g. in SDL NEXTSTATE and JOIN)
if self.child.arrow_head:
self.draw_arrow_head(shape, origin='head',
kind=self.child.arrow_head)
if self.child.arrow_tail:
shape.moveTo(shape.pointAtPercent(0))
self.draw_arrow_head(shape, origin='tail',
kind=self.child.arrow_head)
self.setPath(shape)
class Example(QWidget):
def __init__(self):
super().__init__()
self.initView()
self.initAnimation()
def initView(self):
self.path = QPainterPath()
self.path.moveTo(30, 30)
self.path.cubicTo(30, 30, 200, 350, 350, 30)
self.ball = Ball(self)
self.ball.pos = QPointF(30, 30)
self.setWindowTitle("Animation along curve")
self.setGeometry(300, 300, 400, 300)
self.show()
def paintEvent(self, e):
qp = QPainter()
qp.begin(self)
qp.setRenderHint(QPainter.Antialiasing)
qp.drawPath(self.path)
qp.end()
def initAnimation(self):
self.anim = QPropertyAnimation(self.ball, b'pos')
self.anim.setDuration(7000)
self.anim.setStartValue(QPointF(30, 30))
vals = [p/100 for p in range(0, 101)]
for i in vals:
self.anim.setKeyValueAt(i, self.path.pointAtPercent(i))
self.anim.setEndValue(QPointF(350, 30))
self.anim.start()
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)
def _draw(self, painter: QPainter, width: int, height: int):
self.x = self.flower_center_x(width) * smoothen_curve(
self.get_age_coefficient())
self.y = self.flower_center_y(height) * smoothen_curve(
self.get_age_coefficient())
painter.setPen(
QPen(Color.green,
self.stem_width * smoothen_curve(self.get_age_coefficient())))
# draw the stem
path = QPainterPath()
path.quadTo(0, self.y * 0.6, self.x, self.y)
painter.drawPath(path)
# draw the leaves
for position, coefficient, rotation in self.leafs:
painter.save()
# find the point on the stem and rotate the leaf accordingly
painter.translate(path.pointAtPercent(position))
painter.rotate(degrees(rotation))
# rotate according to where the flower is leaning towards
if self.y != 0:
painter.rotate(-degrees(sin(self.x / self.y)))
# make it so both leaves are facing the same direction
if rotation < 0:
painter.scale(-1, 1)
painter.setBrush(QBrush(Color.green))
painter.setPen(QPen(0))
# draw the leaf
leaf = QPainterPath()
leaf.setFillRule(Qt.WindingFill)
ls = self.leaf_size(width) * smoothen_curve(
self.get_age_coefficient())**2 * coefficient
leaf.quadTo(0.4 * ls, 0.5 * ls, 0, ls)
leaf.cubicTo(0, 0.5 * ls, -0.4 * ls, 0.4 * ls, 0, 0)
painter.drawPath(leaf)
painter.restore()
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)
def goOn(self):
self.anim = QPropertyAnimation(self.mascot, b"pos")
self.mascotFlip.hide()
self.mascotGif.start()
self.mascot.show()
path = QPainterPath()
path.moveTo(-70, 410)
for i in range(self.step):
path.quadTo(
QPointF(
self.xRange / self.step * i - 70 +
(self.xRange / self.step / 2), 410),
QPointF((self.xRange / self.step) * i - 70 +
(self.xRange / self.step), 430))
vals = [p / 100 for p in range(0, 101)]
self.anim.setDuration(self.duration)
for i in vals:
self.anim.setKeyValueAt(i, path.pointAtPercent(i))
self.anim.start()
self.anim.finished.connect(self.goFlip)
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 NodeAnchorItem(GraphicsPathObject):
"""
The left/right widget input/output anchors.
"""
def __init__(self, parent, *args):
self.__boundingRect = None
GraphicsPathObject.__init__(self, parent, *args)
self.setAcceptHoverEvents(True)
self.setPen(QPen(Qt.NoPen))
self.normalBrush = QBrush(QColor("#CDD5D9"))
self.connectedBrush = QBrush(QColor("#9CACB4"))
self.setBrush(self.normalBrush)
self.shadow = QGraphicsDropShadowEffect(
blurRadius=10,
color=QColor(SHADOW_COLOR),
offset=QPointF(0, 0)
)
self.setGraphicsEffect(self.shadow)
self.shadow.setEnabled(False)
# Does this item have any anchored links.
self.anchored = False
if isinstance(parent, NodeItem):
self.__parentNodeItem = parent
else:
self.__parentNodeItem = None
self.__anchorPath = QPainterPath()
self.__points = []
self.__pointPositions = []
self.__fullStroke = None
self.__dottedStroke = None
self.__shape = None
self.prepareGeometryChange()
self.__boundingRect = None
def parentNodeItem(self):
"""
Return a parent :class:`NodeItem` or ``None`` if this anchor's
parent is not a :class:`NodeItem` instance.
"""
return self.__parentNodeItem
def setAnchorPath(self, path):
"""
Set the anchor's curve path as a :class:`QPainterPath`.
"""
self.prepareGeometryChange()
self.__boundingRect = None
self.__anchorPath = path
# Create a stroke of the path.
stroke_path = QPainterPathStroker()
stroke_path.setCapStyle(Qt.RoundCap)
# Shape is wider (bigger mouse hit area - should be settable)
stroke_path.setWidth(12)
self.__shape = stroke_path.createStroke(path)
# The full stroke
stroke_path.setWidth(3)
self.__fullStroke = stroke_path.createStroke(path)
# The dotted stroke (when not connected to anything)
stroke_path.setDashPattern(Qt.DotLine)
self.__dottedStroke = stroke_path.createStroke(path)
if self.anchored:
self.setPath(self.__fullStroke)
self.setBrush(self.connectedBrush)
else:
self.setPath(self.__dottedStroke)
self.setBrush(self.normalBrush)
def anchorPath(self):
"""
Return the anchor path (:class:`QPainterPath`). This is a curve on
which the anchor points lie.
"""
return self.__anchorPath
def setAnchored(self, anchored):
"""
Set the items anchored state. When ``False`` the item draws it self
with a dotted stroke.
"""
self.anchored = anchored
if anchored:
self.setPath(self.__fullStroke)
self.setBrush(self.connectedBrush)
else:
self.setPath(self.__dottedStroke)
self.setBrush(self.normalBrush)
def setConnectionHint(self, hint=None):
"""
Set the connection hint. This can be used to indicate if
a connection can be made or not.
"""
raise NotImplementedError
def count(self):
"""
Return the number of anchor points.
"""
return len(self.__points)
def addAnchor(self, anchor, position=0.5):
"""
Add a new :class:`AnchorPoint` to this item and return it's index.
The `position` specifies where along the `anchorPath` is the new
point inserted.
"""
return self.insertAnchor(self.count(), anchor, position)
def insertAnchor(self, index, anchor, position=0.5):
"""
Insert a new :class:`AnchorPoint` at `index`.
See also
--------
NodeAnchorItem.addAnchor
"""
if anchor in self.__points:
raise ValueError("%s already added." % anchor)
self.__points.insert(index, anchor)
self.__pointPositions.insert(index, position)
anchor.setParentItem(self)
anchor.setPos(self.__anchorPath.pointAtPercent(position))
anchor.destroyed.connect(self.__onAnchorDestroyed)
self.__updatePositions()
self.setAnchored(bool(self.__points))
return index
def removeAnchor(self, anchor):
"""
Remove and delete the anchor point.
"""
anchor = self.takeAnchor(anchor)
anchor.hide()
anchor.setParentItem(None)
anchor.deleteLater()
def takeAnchor(self, anchor):
"""
Remove the anchor but don't delete it.
"""
index = self.__points.index(anchor)
del self.__points[index]
del self.__pointPositions[index]
anchor.destroyed.disconnect(self.__onAnchorDestroyed)
self.__updatePositions()
self.setAnchored(bool(self.__points))
return anchor
def __onAnchorDestroyed(self, anchor):
try:
index = self.__points.index(anchor)
except ValueError:
return
del self.__points[index]
del self.__pointPositions[index]
def anchorPoints(self):
"""
Return a list of anchor points.
"""
return list(self.__points)
def anchorPoint(self, index):
"""
Return the anchor point at `index`.
"""
return self.__points[index]
def setAnchorPositions(self, positions):
"""
Set the anchor positions in percentages (0..1) along the path curve.
"""
if self.__pointPositions != positions:
self.__pointPositions = list(positions)
self.__updatePositions()
def anchorPositions(self):
"""
Return the positions of anchor points as a list of floats where
each float is between 0 and 1 and specifies where along the anchor
path does the point lie (0 is at start 1 is at the end).
"""
return list(self.__pointPositions)
def shape(self):
if self.__shape is not None:
return self.__shape
else:
return GraphicsPathObject.shape(self)
def boundingRect(self):
if self.__boundingRect is None:
self.__boundingRect = super(NodeAnchorItem, self).boundingRect() \
.adjusted(-5, -5, 5, 5)
return self.__boundingRect
def hoverEnterEvent(self, event):
self.prepareGeometryChange()
self.__boundingRect = None
self.shadow.setEnabled(True)
return GraphicsPathObject.hoverEnterEvent(self, event)
def hoverLeaveEvent(self, event):
self.prepareGeometryChange()
self.__boundingRect = None
self.shadow.setEnabled(False)
return GraphicsPathObject.hoverLeaveEvent(self, event)
def __updatePositions(self):
"""Update anchor points positions.
"""
self.prepareGeometryChange()
self.__boundingRect = None
for point, t in zip(self.__points, self.__pointPositions):
pos = self.__anchorPath.pointAtPercent(t)
point.setPos(pos)
def paintEvent(self, event):
painter = QPainter(self)
event.accept()
painter.save()
painter.setRenderHint(QPainter.Antialiasing, True)
if self.fLabel:
if self.fCustomPaintMode == self.CUSTOM_PAINT_MODE_NULL:
painter.setPen(self.fLabelGradientColor2)
painter.setBrush(self.fLabelGradient)
painter.drawRect(self.fLabelGradientRect)
painter.setFont(self.fLabelFont)
painter.setPen(
self.fLabelGradientColorT[0 if self.isEnabled() else 1])
painter.drawText(self.fLabelPos, self.fLabel)
if self.isEnabled():
normValue = float(self.fRealValue -
self.fMinimum) / float(self.fMaximum -
self.fMinimum)
curLayer = int((self.fImageLayersCount - 1) * normValue)
if self.fImageOrientation == self.HORIZONTAL:
xpos = self.fImageBaseSize * curLayer
ypos = 0.0
else:
xpos = 0.0
ypos = self.fImageBaseSize * curLayer
source = QRectF(xpos, ypos, self.fImageBaseSize,
self.fImageBaseSize)
if isinstance(self.fImage, QPixmap):
target = QRectF(0.0, 0.0, self.fImageBaseSize,
self.fImageBaseSize)
painter.drawPixmap(target, self.fImage, source)
else:
self.fImage.renderer().render(painter, source)
# Custom knobs (Dry/Wet and Volume)
if self.fCustomPaintMode in (self.CUSTOM_PAINT_MODE_CARLA_WET,
self.CUSTOM_PAINT_MODE_CARLA_VOL):
# knob color
colorGreen = QColor(0x5D, 0xE7,
0x3D).lighter(100 + self.fHoverStep * 6)
colorBlue = QColor(0x3E, 0xB8,
0xBE).lighter(100 + self.fHoverStep * 6)
# draw small circle
ballRect = QRectF(8.0, 8.0, 15.0, 15.0)
ballPath = QPainterPath()
ballPath.addEllipse(ballRect)
#painter.drawRect(ballRect)
tmpValue = (0.375 + 0.75 * normValue)
ballValue = tmpValue - floor(tmpValue)
ballPoint = ballPath.pointAtPercent(ballValue)
# draw arc
startAngle = 218 * 16
spanAngle = -255 * 16 * normValue
if self.fCustomPaintMode == self.CUSTOM_PAINT_MODE_CARLA_WET:
painter.setBrush(colorBlue)
painter.setPen(QPen(colorBlue, 0))
painter.drawEllipse(
QRectF(ballPoint.x(), ballPoint.y(), 2.2, 2.2))
gradient = QConicalGradient(15.5, 15.5, -45)
gradient.setColorAt(0.0, colorBlue)
gradient.setColorAt(0.125, colorBlue)
gradient.setColorAt(0.625, colorGreen)
gradient.setColorAt(0.75, colorGreen)
gradient.setColorAt(0.76, colorGreen)
gradient.setColorAt(1.0, colorGreen)
painter.setBrush(gradient)
painter.setPen(QPen(gradient, 3))
else:
painter.setBrush(colorBlue)
painter.setPen(QPen(colorBlue, 0))
painter.drawEllipse(
QRectF(ballPoint.x(), ballPoint.y(), 2.2, 2.2))
painter.setBrush(colorBlue)
painter.setPen(QPen(colorBlue, 3))
painter.drawArc(4.0, 4.0, 26.0, 26.0, startAngle, spanAngle)
# Custom knobs (L and R)
elif self.fCustomPaintMode in (self.CUSTOM_PAINT_MODE_CARLA_L,
self.CUSTOM_PAINT_MODE_CARLA_R):
# knob color
color = QColor(0xAD, 0xD5,
0x48).lighter(100 + self.fHoverStep * 6)
# draw small circle
ballRect = QRectF(7.0, 8.0, 11.0, 12.0)
ballPath = QPainterPath()
ballPath.addEllipse(ballRect)
#painter.drawRect(ballRect)
tmpValue = (0.375 + 0.75 * normValue)
ballValue = tmpValue - floor(tmpValue)
ballPoint = ballPath.pointAtPercent(ballValue)
painter.setBrush(color)
painter.setPen(QPen(color, 0))
painter.drawEllipse(
QRectF(ballPoint.x(), ballPoint.y(), 2.0, 2.0))
# draw arc
if self.fCustomPaintMode == self.CUSTOM_PAINT_MODE_CARLA_L:
startAngle = 218 * 16
spanAngle = -255 * 16 * normValue
else:
startAngle = 322.0 * 16
spanAngle = 255.0 * 16 * (1.0 - normValue)
painter.setPen(QPen(color, 2.5))
painter.drawArc(3.5, 3.5, 22.0, 22.0, startAngle, spanAngle)
# Custom knobs (Color)
elif self.fCustomPaintMode == self.CUSTOM_PAINT_MODE_COLOR:
# knob color
color = self.fCustomPaintColor.lighter(100 +
self.fHoverStep * 6)
# draw small circle
ballRect = QRectF(8.0, 8.0, 15.0, 15.0)
ballPath = QPainterPath()
ballPath.addEllipse(ballRect)
tmpValue = (0.375 + 0.75 * normValue)
ballValue = tmpValue - floor(tmpValue)
ballPoint = ballPath.pointAtPercent(ballValue)
# draw arc
startAngle = 218 * 16
spanAngle = -255 * 16 * normValue
painter.setBrush(color)
painter.setPen(QPen(color, 0))
painter.drawEllipse(
QRectF(ballPoint.x(), ballPoint.y(), 2.2, 2.2))
painter.setBrush(color)
painter.setPen(QPen(color, 3))
painter.drawArc(4.0, 4.8, 26.0, 26.0, startAngle, spanAngle)
# Custom knobs (Zita)
elif self.fCustomPaintMode == self.CUSTOM_PAINT_MODE_ZITA:
a = normValue * pi * 1.5 - 2.35
r = 10.0
x = 10.5
y = 10.5
x += r * sin(a)
y -= r * cos(a)
painter.setBrush(Qt.black)
painter.setPen(QPen(Qt.black, 2))
painter.drawLine(QPointF(11.0, 11.0), QPointF(x, y))
# Custom knobs
else:
painter.restore()
return
if self.HOVER_MIN < self.fHoverStep < self.HOVER_MAX:
self.fHoverStep += 1 if self.fIsHovered else -1
QTimer.singleShot(20, self.update)
else: # isEnabled()
target = QRectF(0.0, 0.0, self.fImageBaseSize, self.fImageBaseSize)
if isinstance(self.fImage, QPixmap):
painter.drawPixmap(target, self.fImage, target)
else:
self.fImage.renderer().render(painter, target)
painter.restore()
def paintEvent(self, event):
painter = QPainter(self)
event.accept()
painter.save()
painter.setRenderHint(QPainter.Antialiasing, True)
if self.fLabel:
if self.fCustomPaintMode == self.CUSTOM_PAINT_MODE_NULL:
painter.setPen(self.fLabelGradientColor2)
painter.setBrush(self.fLabelGradient)
painter.drawRect(self.fLabelGradientRect)
painter.setFont(self.fLabelFont)
painter.setPen(self.fLabelGradientColorT[0 if self.isEnabled() else 1])
painter.drawText(self.fLabelPos, self.fLabel)
if self.isEnabled():
normValue = float(self.fRealValue - self.fMinimum) / float(self.fMaximum - self.fMinimum)
target = QRectF(0.0, 0.0, self.fPixmapBaseSize, self.fPixmapBaseSize)
curLayer = int((self.fPixmapLayersCount - 1) * normValue)
if self.fPixmapOrientation == self.HORIZONTAL:
xpos = self.fPixmapBaseSize * curLayer
ypos = 0.0
else:
xpos = 0.0
ypos = self.fPixmapBaseSize * curLayer
source = QRectF(xpos, ypos, self.fPixmapBaseSize, self.fPixmapBaseSize)
painter.drawPixmap(target, self.fPixmap, source)
# Custom knobs (Dry/Wet and Volume)
if self.fCustomPaintMode in (self.CUSTOM_PAINT_MODE_CARLA_WET, self.CUSTOM_PAINT_MODE_CARLA_VOL):
# knob color
colorGreen = QColor(0x5D, 0xE7, 0x3D).lighter(100 + self.fHoverStep*6)
colorBlue = QColor(0x3E, 0xB8, 0xBE).lighter(100 + self.fHoverStep*6)
# draw small circle
ballRect = QRectF(8.0, 8.0, 15.0, 15.0)
ballPath = QPainterPath()
ballPath.addEllipse(ballRect)
#painter.drawRect(ballRect)
tmpValue = (0.375 + 0.75*normValue)
ballValue = tmpValue - floor(tmpValue)
ballPoint = ballPath.pointAtPercent(ballValue)
# draw arc
startAngle = 216*16
spanAngle = -252*16*normValue
if self.fCustomPaintMode == self.CUSTOM_PAINT_MODE_CARLA_WET:
painter.setBrush(colorBlue)
painter.setPen(QPen(colorBlue, 0))
painter.drawEllipse(QRectF(ballPoint.x(), ballPoint.y(), 2.2, 2.2))
gradient = QConicalGradient(15.5, 15.5, -45)
gradient.setColorAt(0.0, colorBlue)
gradient.setColorAt(0.125, colorBlue)
gradient.setColorAt(0.625, colorGreen)
gradient.setColorAt(0.75, colorGreen)
gradient.setColorAt(0.76, colorGreen)
gradient.setColorAt(1.0, colorGreen)
painter.setBrush(gradient)
painter.setPen(QPen(gradient, 3))
else:
painter.setBrush(colorBlue)
painter.setPen(QPen(colorBlue, 0))
painter.drawEllipse(QRectF(ballPoint.x(), ballPoint.y(), 2.2, 2.2))
painter.setBrush(colorBlue)
painter.setPen(QPen(colorBlue, 3))
painter.drawArc(4.0, 4.0, 26.0, 26.0, startAngle, spanAngle)
# Custom knobs (L and R)
elif self.fCustomPaintMode in (self.CUSTOM_PAINT_MODE_CARLA_L, self.CUSTOM_PAINT_MODE_CARLA_R):
# knob color
color = QColor(0xAD, 0xD5, 0x48).lighter(100 + self.fHoverStep*6)
# draw small circle
ballRect = QRectF(7.0, 8.0, 11.0, 12.0)
ballPath = QPainterPath()
ballPath.addEllipse(ballRect)
#painter.drawRect(ballRect)
tmpValue = (0.375 + 0.75*normValue)
ballValue = tmpValue - floor(tmpValue)
ballPoint = ballPath.pointAtPercent(ballValue)
painter.setBrush(color)
painter.setPen(QPen(color, 0))
painter.drawEllipse(QRectF(ballPoint.x(), ballPoint.y(), 2.0, 2.0))
# draw arc
if self.fCustomPaintMode == self.CUSTOM_PAINT_MODE_CARLA_L:
startAngle = 216*16
spanAngle = -252.0*16*normValue
else:
startAngle = 324.0*16
spanAngle = 252.0*16*(1.0-normValue)
painter.setPen(QPen(color, 2))
painter.drawArc(3.5, 4.5, 22.0, 22.0, startAngle, spanAngle)
# Custom knobs (Color)
elif self.fCustomPaintMode == self.CUSTOM_PAINT_MODE_COLOR:
# knob color
color = self.fCustomPaintColor.lighter(100 + self.fHoverStep*6)
# draw small circle
ballRect = QRectF(8.0, 8.0, 15.0, 15.0)
ballPath = QPainterPath()
ballPath.addEllipse(ballRect)
tmpValue = (0.375 + 0.75*normValue)
ballValue = tmpValue - floor(tmpValue)
ballPoint = ballPath.pointAtPercent(ballValue)
# draw arc
startAngle = 216*16
spanAngle = -252*16*normValue
painter.setBrush(color)
painter.setPen(QPen(color, 0))
painter.drawEllipse(QRectF(ballPoint.x(), ballPoint.y(), 2.2, 2.2))
painter.setBrush(color)
painter.setPen(QPen(color, 3))
painter.drawArc(4.0, 4.0, 26.0, 26.0, startAngle, spanAngle)
# Custom knobs (Zita)
elif self.fCustomPaintMode == self.CUSTOM_PAINT_MODE_ZITA:
a = normValue * pi * 1.5 - 2.35
r = 10.0
x = 10.5
y = 10.5
x += r * sin(a)
y -= r * cos(a)
painter.setBrush(Qt.black)
painter.setPen(QPen(Qt.black, 2))
painter.drawLine(QPointF(11.0, 11.0), QPointF(x, y))
# Custom knobs
else:
painter.restore()
return
if self.HOVER_MIN < self.fHoverStep < self.HOVER_MAX:
self.fHoverStep += 1 if self.fIsHovered else -1
QTimer.singleShot(20, self.update)
else: # isEnabled()
target = QRectF(0.0, 0.0, self.fPixmapBaseSize, self.fPixmapBaseSize)
painter.drawPixmap(target, self.fPixmap, target)
painter.restore()
def getPointOnEdge(self, t):
edgePath = QPainterPath(self.beginPoint)
edgePath.cubicTo(self.curvePoint1, self.curvePoint2, self.endPoint)
return QPointF(edgePath.pointAtPercent(t))
def getPointOnEdge(self, t):
edgePath = QPainterPath(self.beginPoint)
edgePath.cubicTo(self.curvePoint1, self.curvePoint2, self.endPoint)
return QPointF(edgePath.pointAtPercent(t))
def distance_to_path(point: QPointF,
path: QPainterPath,
percent: float = 0.0):
bp = path.pointAtPercent(percent)
return ((bp.x() - point.x())**2.0 + (bp.y() - point.y())**2.0)**0.5
def drawTextAlongCubic(self, lay, painter, filename, msg):
fs = lay["defaultFontSize"]
font = QFont('Right Chalk', fs)
defaultMessage = msg
if len(msg) == 0:
return
c1 = QPointF(lay["x1"], lay["y1"])
c2 = QPointF(lay["x2"], lay["y2"])
c3 = QPointF(lay["x3"], lay["y3"])
c4 = QPointF(lay["x4"], lay["y4"])
path = QPainterPath(c1)
path.cubicTo(c2, c3, c4)
# painter.drawPath(path)
pathLength = path.length()
textMetricLength = QFontMetrics(font).width(defaultMessage)
fsn = int(fs * pathLength / (textMetricLength) * .95)
if fsn > 70:
fsn = 70
font = QFont('Right Chalk', fsn)
textMetricLength = QFontMetrics(font).width(defaultMessage)
messageSpacing = []
defaultMessageM = []
sumMessageSpacing = 0.0
for i in range(len(defaultMessage)):
messageSpacing.append(QFontMetrics(font).width(defaultMessage[i]))
sumMessageSpacing += messageSpacing[i]
for i in range(len(defaultMessage)):
messageSpacing[i] = messageSpacing[i] / sumMessageSpacing
steps = 0
painter.setFont(font)
for i in range(len(defaultMessage)):
steps += messageSpacing[i] / 2
point = QPointF(path.pointAtPercent(steps))
angle = path.angleAtPercent(steps)
painter.save()
painter.translate(point)
painter.rotate(-angle)
x = -QFontMetrics(font).width(defaultMessage[i]) / 2
y = -QFontMetrics(font).height() / 2
w = QFontMetrics(font).width(defaultMessage[i])
h = QFontMetrics(font).height()
r = QRectF(x, y, w, h)
painter.setPen(QPen(Qt.white, 2))
painter.drawText(r, defaultMessage[i])
if i % 2 == 0:
painter.setPen(QPen(Qt.red, 2))
else:
painter.setPen(QPen(Qt.green, 2))
# painter.drawRect(r)
painter.restore()
steps += messageSpacing[i] / 2
