def paintEvent(self, event):
rect = QRect(10, 20, 80, 60)
path = QPainterPath()
path.moveTo(20, 80)
path.lineTo(20, 30)
path.cubicTo(80, 0, 50, 50, 80, 80)
startAngle = 30 * 16
arcLength = 120 * 16
painter = QPainter(self)
painter.setPen(self.pen)
painter.setBrush(self.brush)
if self.antialiased:
painter.setRenderHint(QPainter.Antialiasing)
for x in range(0, self.width(), 100):
for y in range(0, self.height(), 100):
painter.save()
painter.translate(x, y)
if self.transformed:
painter.translate(50, 50)
painter.rotate(60.0)
painter.scale(0.6, 0.9)
painter.translate(-50, -50)
if self.shape == RenderArea.Line:
painter.drawLine(rect.bottomLeft(), rect.topRight())
elif self.shape == RenderArea.Points:
painter.drawPoints(RenderArea.points)
elif self.shape == RenderArea.Polyline:
painter.drawPolyline(RenderArea.points)
elif self.shape == RenderArea.Polygon:
painter.drawPolygon(RenderArea.points)
elif self.shape == RenderArea.Rect:
painter.drawRect(rect)
elif self.shape == RenderArea.RoundedRect:
painter.drawRoundedRect(rect, 25, 25, Qt.RelativeSize)
elif self.shape == RenderArea.Ellipse:
painter.drawEllipse(rect)
elif self.shape == RenderArea.Arc:
painter.drawArc(rect, startAngle, arcLength)
elif self.shape == RenderArea.Chord:
painter.drawChord(rect, startAngle, arcLength)
elif self.shape == RenderArea.Pie:
painter.drawPie(rect, startAngle, arcLength)
elif self.shape == RenderArea.Path:
painter.drawPath(path)
elif self.shape == RenderArea.Text:
painter.drawText(rect, Qt.AlignCenter,
"PySide 2\nQt %s" % qVersion())
elif self.shape == RenderArea.Pixmap:
painter.drawPixmap(10, 10, self.pixmap)
painter.restore()
painter.setPen(self.palette().dark().color())
painter.setBrush(Qt.NoBrush)
painter.drawRect(QRect(0, 0, self.width() - 1, self.height() - 1))
def drawValue(self, p: QPainter, baseRect: QRectF, value: float,
delta: float):
if value == self.m_min:
return
if self.m_barStyle == self.BarStyle.EXPAND:
p.setBrush(self.palette().highlight())
p.setPen(QPen(self.palette().shadow().color(),
self.m_dataPenWidth))
radius = (baseRect.height() / 2) / delta
p.drawEllipse(baseRect.center(), radius, radius)
return
elif self.m_barStyle == self.BarStyle.LINE:
p.setPen(
QPen(self.palette().highlight().color(), self.m_dataPenWidth))
p.setBrush(Qt.NoBrush)
if value == self.m_max:
p.drawEllipse(
baseRect.adjusted(self.m_outlinePenWidth / 2,
self.m_outlinePenWidth / 2,
-self.m_outlinePenWidth / 2,
-self.m_outlinePenWidth / 2))
else:
arcLength = 360 / delta
p.drawArc(
baseRect.adjusted(self.m_outlinePenWidth / 2,
self.m_outlinePenWidth / 2,
-self.m_outlinePenWidth / 2,
-self.m_outlinePenWidth / 2),
int(self.m_nullPosition * 16), int(-arcLength * 16))
return
dataPath = QPainterPath()
dataPath.setFillRule(Qt.WindingFill)
if value == self.m_max:
dataPath.addEllipse(baseRect)
else:
arcLength = 360 / delta
dataPath.moveTo(baseRect.center())
dataPath.arcTo(baseRect, self.m_nullPosition, -arcLength)
dataPath.lineTo(baseRect.center())
p.setBrush(self.palette().highlight())
p.setPen(QPen(self.palette().shadow().color(), self.m_dataPenWidth))
p.drawPath(dataPath)
def paintEvent(self, pe) -> None:
if not self.inhibit_paint:
extent = 1.5 * np.pi
offset = 1.25 * np.pi
painter = QPainter(self)
# So that we can use the background color
painter.setBackgroundMode(Qt.OpaqueMode)
# Smooth out the circle
painter.setRenderHint(QPainter.Antialiasing)
# Use background color
bgColor = painter.background().color()
painter.setBrush(painter.background())
if self._text not in implementedKnobs:
painter.setBrush(QtGui.QBrush(QtGui.QColor(int("0xcccccc",
0))))
# Store color from stylesheet, pen will be overridden
pointColor = QColor(painter.pen().color())
# print(QDial.width(self), QDial.height(self))
# draw widget borders
pen = QPen(QColor(self._ringColor), 1)
pen.setCapStyle(Qt.SquareCap)
painter.setPen(pen)
# uncomment the following line to draw outer rect
# painter.drawRect(0, 0, np.floor(QDial.width(self)), QDial.height(self))
# No border
painter.setPen(QPen(Qt.NoPen))
# the heignt of the widget is 2*radius + 2*fontsize1 + 2*fontsize2
# where fontsize1 = .4radius and fontsize2 = .9*.4*radius
# so QDial.height = radius * (2+.4*2+.4*.9*2)
#
fontsize1factor = .4
fontsize2reduction = .9
fontsize2factor = fontsize1factor * fontsize2reduction
center_x = QDial.width(self) / 2.0
center_y = QDial.height(self) / 2.0
if not self._hasFixedSize:
if not self._hasFixedFontSize:
radius = np.min(
(QDial.width(self) / 2. - self._knobMargin,
QDial.height(self) /
(2. + 2 * fontsize1factor + 2 * fontsize2factor) -
self._knobMargin))
radius = np.max((radius, 1))
# print("Radius = ", radius, ", height = ", QDial.height(self), ", width = ", QDial.width(self))
center_y = center_y - radius * (fontsize1factor +
fontsize2factor)
else:
radius = np.min(
(QDial.width(self) / 2. - self._knobMargin,
(QDial.height(self) - 4 * self._fixedFontSize) / 2. -
self._knobMargin))
radius = np.max((radius, 1))
center_y = center_y - (self._fixedFontSize *
(1 + fontsize2reduction))
else:
radius = self._fixedSize / 2.
radius = np.max((radius, 1))
center_y = center_y - radius * (fontsize1factor +
fontsize2factor)
self.radius = radius
# Draw arc
rectangle = QtCore.QRectF(center_x - radius, center_y - radius,
2 * radius, 2 * radius)
"""The startAngle and spanAngle must be specified in 1/16th of a degree,
i.e. a full circle equals 5760 (16 * 360).
Positive values for the angles mean counter-clockwise
while negative values mean the clockwise direction.
Zero degrees is at the 3 o'clock position."""
linewidth = radius / 30. * 2
# linewidth = 1
pen = QPen(QColor(self._ringColor), linewidth)
pen.setCapStyle(Qt.RoundCap)
# pen.setCapStyle(Qt.FlatCap)
painter.setPen(pen)
# adapt to linewidth to make it more pleasant to the eye
capRadius = linewidth / 4
angleCap = np.arcsin(capRadius / radius)
start_deg = (90 - np.rad2deg(extent / 2)) + np.rad2deg(angleCap)
start_16deg = start_deg * 16
extent_deg = np.rad2deg(extent) - 2 * np.rad2deg(angleCap)
extent_16deg = extent_deg * 16
painter.drawArc(rectangle, start_16deg, extent_16deg)
#draw inner circle
pen = QPen(QColor(pointColor), linewidth)
pen.setCapStyle(Qt.RoundCap)
painter.setPen(pen)
painter.setBrush(QtGui.QColor(bgColor))
radius_inner = 15. / 20. * radius
painter.drawEllipse(QtCore.QPointF(center_x, center_y),
radius_inner, radius_inner)
self.center = QtCore.QPointF(center_x, center_y)
"""
# Get ratio between current value and maximum to calculate angle
if (param != NULL):
if (param->value != this->value())
param->setValue(this->value())
"""
ratio = (QDial.value(self) - QDial.minimum(self)) / (
QDial.maximum(self) - QDial.minimum(self))
# The maximum amount of degrees is 270, offset by 225
angle = ratio * extent - offset
# Draw the indicator
painter.setBrush(QBrush(pointColor))
a_y = center_y + np.sin(angle) * (radius - .1)
a_x = center_x + np.cos(angle) * (radius - .1)
pen = QPen(pointColor, linewidth)
pen.setCapStyle(Qt.RoundCap)
painter.setPen(pen)
painter.drawLine(a_x, a_y, np.round(center_x), center_y)
if not self._hasFixedFontSize:
fontsize1 = radius * fontsize1factor
if self.sizeType == 1 and fontsize1 != Knob.fontsize1:
Knob.fontsize1 = fontsize1
else:
fontsize1 = Knob.fontsize1
fontsize2 = fontsize1 * fontsize2reduction
else:
fontsize1 = self._fixedFontSize
fontsize2 = fontsize1 * fontsize2reduction
self.fontsize1 = fontsize1
textRect_ = QtCore.QRectF(0, center_y + radius, QDial.width(self),
2 * fontsize1)
if self.coloredTitle:
painter.setPen(QColor(int(titleColor, 0)))
f = painter.font()
f.setPointSizeF(fontsize1)
painter.setFont(f)
# painter.drawRect(textRect_)
painter.drawText(textRect_, Qt.AlignHCenter | Qt.AlignTop,
self._text)
# painter.drawText(textRect_, Qt.AlignHCenter | Qt.AlignTop, str(fontsize1))
textRect_ = QtCore.QRectF(0, center_y + radius + fontsize1 * 2,
QDial.width(self), 2 * fontsize2)
if self.hasFocus():
painter.setPen(QtGui.QColor("red"))
f.setPointSizeF(fontsize2)
painter.setFont(f)
# painter.drawRect(textRect_)
painter.drawText(textRect_, Qt.AlignHCenter | Qt.AlignTop,
str(QDial.value(self)))
painter.end()