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 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 paintEvent(self, event):
side = min(self.width(), self.height())
time = QTime.currentTime()
painter = QPainter(self)
painter.setRenderHint(QPainter.Antialiasing)
painter.translate(self.width() / 2, self.height() / 2)
painter.scale(side / 200.0, side / 200.0)
painter.setPen(Qt.NoPen)
painter.setBrush(AnalogClock.hourColor)
painter.save()
painter.rotate(30.0 * ((time.hour() + time.minute() / 60.0)))
painter.drawConvexPolygon(AnalogClock.hourHand)
painter.restore()
painter.setPen(AnalogClock.hourColor)
for i in range(12):
painter.drawLine(88, 0, 96, 0)
painter.rotate(30.0)
painter.setPen(Qt.NoPen)
painter.setBrush(AnalogClock.minuteColor)
painter.save()
painter.rotate(6.0 * (time.minute() + time.second() / 60.0))
painter.drawConvexPolygon(AnalogClock.minuteHand)
painter.restore()
painter.setPen(AnalogClock.minuteColor)
for j in range(60):
if (j % 5) != 0:
painter.drawLine(92, 0, 96, 0)
painter.rotate(6.0)
def doubleBufferPaint(self, buffer=None):
self.blockSignals(True)
#self.drawFrame(painter)
if buffer is None:
buffer = QImage(self.width(), self.height(), QImage.Format_RGB888)
buffer.fill(Qt.black)
# calculate offset and scale of droplet image pixmap
scale_x, scale_y, offset_x, offset_y = self.get_from_image_transform()
db_painter = QPainter(buffer)
db_painter.setRenderHints(QPainter.Antialiasing
| QPainter.NonCosmeticDefaultPen)
db_painter.setBackground(QBrush(Qt.black))
db_painter.setPen(QPen(Qt.black, 0))
db_painter.drawPixmap(offset_x, offset_y, self._pixmap)
pen = QPen(Qt.magenta, 1)
pen_fine = QPen(Qt.blue, 1)
pen.setCosmetic(True)
db_painter.setPen(pen)
# draw droplet outline and tangent only if evaluate_droplet was successful
if self._droplet.is_valid:
try:
# transforming true image coordinates to scaled pixmap coordinates
db_painter.translate(offset_x, offset_y)
db_painter.scale(scale_x, scale_y)
# drawing tangents and baseline
db_painter.drawLine(*self._droplet.line_l)
db_painter.drawLine(*self._droplet.line_r)
db_painter.drawLine(*self._droplet.int_l, *self._droplet.int_r)
# move origin to ellipse origin
db_painter.translate(*self._droplet.center)
# draw diagnostics
# db_painter.setPen(pen_fine)
# # lines parallel to coordinate axes
# db_painter.drawLine(0,0,20*scale_x,0)
# db_painter.drawLine(0,0,0,20*scale_y)
# # angle arc
# db_painter.drawArc(-5*scale_x, -5*scale_y, 10*scale_x, 10*scale_y, 0, -self._droplet.tilt_deg*16)
# rotate coordinates to ellipse tilt
db_painter.rotate(self._droplet.tilt_deg)
# draw ellipse
# db_painter.setPen(pen)
db_painter.drawEllipse(-self._droplet.maj / 2,
-self._droplet.min / 2,
self._droplet.maj, self._droplet.min)
# # major and minor axis for diagnostics
# db_painter.drawLine(0, 0, self._droplet.maj/2, 0)
# db_painter.drawLine(0, 0, 0, self._droplet.min/2)
except Exception as ex:
logging.error(ex)
db_painter.end()
self.blockSignals(False)
return buffer
def paintEvent(self, paintEvent): # pylint: disable=unused-argument
"""
The paint event actually drawing the image
:param paintEvent: a QPaintEvent instance
:return:
"""
p = QPainter(self)
p.scale(self._scale, self._scale)
p.drawImage(0, 0, self._img)
def paintEvent(self, ev):
"""
Manually implemented paint event
:param ev: the QT paint event
:return:
"""
h = self.height()
w = self.width()
p = QPainter(self)
p.setClipRect(ev.region().boundingRect())
pen = QPen(QColor(0, 0, 0))
pen.setWidth(4)
ls = QFontMetricsF(p.font()).lineSpacing()
for idx, t in enumerate(sorted(list(self._loadData.keys()))):
y = 10 + idx * ls
pen.setColor(ThreadToColor.singleton.get(t))
p.setPen(pen)
p.drawLine(QLineF(15, y, 15 + 15, y))
pen.setColor(QColor(0, 0, 0))
p.setPen(pen)
p.drawText(QPointF(35, y), t)
if len(self._loadData) > 0:
right = max([
polygon[polygon.count() - 1].x()
for _, polygon in self._loadData.items()
])
else:
right = 0.0
p.translate(w - 10 - right * 20, h - 10)
p.scale(
20, -(h - 20)
) # x direction: 20 pixels per second, y direction: spread between 10 and h-10
topleft = p.transform().inverted()[0].map(QPointF(10, 10))
pen.setWidthF(0)
pen.setCosmetic(True)
left = topleft.x()
p.setRenderHint(QPainter.Antialiasing, True)
p.setPen(pen)
p.drawLine(QLineF(left, 0, right, 0))
p.drawLine(QLineF(left, 0, left, 1))
idx = 0
for t, polygon in self._loadData.items():
pen.setColor(ThreadToColor.singleton.get(t))
p.setPen(pen)
p.drawPolyline(polygon)
p.end()
def paintEvent(self, event):
painter = QPainter()
painter.begin(self)
painter.setRenderHint(QPainter.Antialiasing)
painter.fillRect(event.rect(), self.background_brush)
center_position = size_to_point(event.rect().size()) / 2
painter.translate(center_position)
painter.scale(self.camera.scale_factor, self.camera.scale_factor)
painter.translate(-center_position)
# Not using QPoint for smoother movement in large zoom (cause it uses integers instead of floats)
painter.translate(*self.camera.position)
painter.drawPixmap(QPoint(0., 0.), self.pixmap)
painter.end()
event.accept()
def drawProgress(self, painter: QPainter) -> None:
painter.save()
width: int = self.width()
height: int = self.height()
side: int = min(width, height)
radius: int = 99 - self.__borderWidth
# 绘制外圆
pen: QPen = QPen()
pen.setWidth(self.__borderWidth)
pen.setColor(self.__borderColor)
painter.setPen(pen if self.__borderWidth > 0 else Qt.NoPen)
painter.setBrush(self.__bgColor)
# 平移坐标轴中心, 等比例缩放
rectCircle: QRect = QRect(-radius, -radius, radius * 2, radius * 2)
painter.translate(width / 2, height / 2)
painter.scale(side / 200.0, side / 200.0)
painter.drawEllipse(rectCircle)
# 绘制圆弧进度
pen.setWidth(self.__lineWidth)
pen.setColor(self.__lineColor)
painter.setPen(pen)
offset: int = radius - self.__lineWidth - 5
rectArc: QRectF = QRectF(-offset, -offset, offset * 2, offset * 2)
startAngle: int = offset * 16
spanAngle: int = int(-self.__value * 16)
painter.drawArc(rectArc, startAngle, spanAngle)
# 绘制进度文字
font: QFont = QFont()
font.setPixelSize(offset - 15)
painter.setFont(font)
strValue: str = str(int(self.__value) * 100 // 360) + '%'
painter.drawText(rectCircle, Qt.AlignCenter, strValue)
painter.restore()
def paintEvent(self, event):
painter = QPainter(self)
painter.fillRect(self.rect(), Qt.black)
if self.pixmap.isNull():
painter.setPen(Qt.white)
painter.drawText(self.rect(), Qt.AlignCenter,
"Rendering initial image, please wait...")
return
if self.curScale == self.pixmapScale:
painter.drawPixmap(self.pixmapOffset, self.pixmap)
else:
scaleFactor = self.pixmapScale / self.curScale
newWidth = int(self.pixmap.width() * scaleFactor)
newHeight = int(self.pixmap.height() * scaleFactor)
newX = self.pixmapOffset.x() + (self.pixmap.width() - newWidth) / 2
newY = self.pixmapOffset.y() + (self.pixmap.height() -
newHeight) / 2
painter.save()
painter.translate(newX, newY)
painter.scale(scaleFactor, scaleFactor)
exposed, _ = painter.matrix().inverted()
exposed = exposed.mapRect(self.rect()).adjusted(-1, -1, 1, 1)
painter.drawPixmap(exposed, self.pixmap, exposed)
painter.restore()
text = "Use mouse wheel or the '+' and '-' keys to zoom. Press and " \
"hold left mouse button to scroll."
metrics = painter.fontMetrics()
textWidth = metrics.width(text)
painter.setPen(Qt.NoPen)
painter.setBrush(QColor(0, 0, 0, 127))
painter.drawRect((self.width() - textWidth) / 2 - 5, 0, textWidth + 10,
metrics.lineSpacing() + 5)
painter.setPen(Qt.white)
painter.drawText((self.width() - textWidth) / 2,
metrics.leading() + metrics.ascent(), text)
def paintEvent(self, event):
painter = QPainter(self)
painter.fillRect(self.rect(), Qt.black)
if self.pixmap.isNull():
painter.setPen(Qt.white)
painter.drawText(self.rect(), Qt.AlignCenter,
"Rendering initial image, please wait...")
return
if self.curScale == self.pixmapScale:
painter.drawPixmap(self.pixmapOffset, self.pixmap)
else:
scaleFactor = self.pixmapScale / self.curScale
newWidth = int(self.pixmap.width() * scaleFactor)
newHeight = int(self.pixmap.height() * scaleFactor)
newX = self.pixmapOffset.x() + (self.pixmap.width() - newWidth) / 2
newY = self.pixmapOffset.y() + (self.pixmap.height() - newHeight) / 2
painter.save()
painter.translate(newX, newY)
painter.scale(scaleFactor, scaleFactor)
exposed, _ = painter.matrix().inverted()
exposed = exposed.mapRect(self.rect()).adjusted(-1, -1, 1, 1)
painter.drawPixmap(exposed, self.pixmap, exposed)
painter.restore()
text = "Use mouse wheel or the '+' and '-' keys to zoom. Press and " \
"hold left mouse button to scroll."
metrics = painter.fontMetrics()
textWidth = metrics.width(text)
painter.setPen(Qt.NoPen)
painter.setBrush(QColor(0, 0, 0, 127))
painter.drawRect((self.width() - textWidth) / 2 - 5, 0, textWidth + 10,
metrics.lineSpacing() + 5)
painter.setPen(Qt.white)
painter.drawText((self.width() - textWidth) / 2,
metrics.leading() + metrics.ascent(), text)
def paint(self, painter: QPainter, option: QStyleOptionGraphicsItem,
widget: Optional[QWidget]) -> None:
# Draw a circle for the node
pen = QPen(Qt.gray)
pen.setWidth(2)
pen.setCosmetic(True)
# Combine ideas from these code samples to draw items at a fixed size:
# https://stackoverflow.com/questions/1222914/qgraphicsview-and-qgraphicsitem-don%C2%B4t-scale-item-when-scaling-the-view-rect
# https://www.qtcentre.org/threads/28691-Scale-independent-QGraphicsItem
object_rect = self.boundingRect()
mapped_rect = painter.transform().mapRect(object_rect)
width_ratio = object_rect.width() / mapped_rect.width()
scale_factor = max(1, width_ratio)
painter.setPen(pen)
painter.setBrush(Qt.gray)
scaled_diameter = self.diameter * scale_factor
painter.drawEllipse((self.x - scaled_diameter / 2),
(self.y - scaled_diameter / 2), scaled_diameter,
scaled_diameter)
# Draw text for the node name
label_path = QPainterPath()
label_font = QFont("Calibri", 10 * scale_factor)
label_path.addText(self.x, -self.y - self.diameter / 2, label_font,
self.name)
painter.scale(1.0, -1.0)
painter.setBrush(Qt.blue)
painter.setPen(Qt.NoPen)
painter.drawPath(label_path)
def paint(self,
painter: QPainter,
option: QStyleOptionGraphicsItem,
widget: QWidget = ...):
fillColor = self.color.darker(
150) if option.state & QStyle.State_Selected else self.color
if option.state & QStyle.State_MouseOver:
fillColor = fillColor.lighter(125)
lod = option.levelOfDetailFromTransform(painter.worldTransform())
if lod < 0.2:
if lod < 0.125:
painter.fillRect(QRectF(0, 0, 110, 70), fillColor)
return
b = painter.brush()
painter.setBrush(fillColor)
painter.drawRect(13, 13, 97, 57)
painter.setBrush(b)
return
oldPen = painter.pen()
pen = oldPen
width = 0
if option.state & QStyle.State_Selected:
width += 2
pen.setWidth(width)
b = painter.brush()
painter.setBrush(
QBrush(
fillColor.darker(120 if option.state
& QStyle.State_Sunken else 100)))
painter.drawRect(QRect(14, 14, 79, 39))
painter.setBrush(b)
if lod >= 1:
painter.setPen(QPen(Qt.gray, 1))
painter.drawLine(15, 54, 94, 54)
painter.drawLine(94, 53, 94, 15)
painter.setPen(QPen(Qt.black, 0))
# Draw text
if lod >= 2:
font = QFont("Times", 10)
font.setStyleStrategy(QFont.ForceOutline)
painter.setFont(font)
painter.save()
painter.scale(0.1, 0.1)
painter.drawText(
170, 180,
f"Model: VSC-2000 (Very Small Chip) at {self.x}x{self.y}")
painter.drawText(170, 200,
"Serial number: DLWR-WEER-123L-ZZ33-SDSJ")
painter.drawText(170, 220, "Manufacturer: Chip Manufacturer")
painter.restore()
# Drawlines
lines: List[QLineF] = []
if lod >= 0.5:
s = 1 if lod > 0.5 else 2
for i in range(0, 11, s):
lines.append(QLineF(18 + 7 * i, 13, 18 + 7 * i, 5))
lines.append(QLineF(18 + 7 * i, 54, 18 + 7 * i, 62))
for i in range(0, 7, s):
lines.append(QLineF(5, 18 + i * 5, 13, 18 + i * 5))
lines.append(QLineF(94, 18 + i * 5, 102, 18 + i * 5))
if lod >= 0.4:
lines.extend([
QLineF(25, 35, 35, 35),
QLineF(35, 30, 35, 40),
QLineF(35, 30, 45, 35),
QLineF(35, 40, 45, 35),
QLineF(45, 30, 45, 40),
QLineF(45, 35, 55, 35)
])
painter.drawLines(lines[:])
## Draw red ink
if len(self.stuff) > 1:
p = painter.pen()
painter.setPen(
QPen(Qt.red, 1, Qt.SolidLine, Qt.RoundCap, Qt.RoundJoin))
painter.setBrush(Qt.NoBrush)
path = QPainterPath()
path.moveTo(self.stuff[0])
for i in range(1, len(self.stuff)):
path.lineTo(self.stuff[i])
painter.drawPath(path)
painter.setPen(p)
def paintEvent(self, event):
hour_hand = [QPoint(7, 8), QPoint(-7, 8), QPoint(0, -40)]
minute_hand = [QPoint(7, 8), QPoint(-7, 8), QPoint(0, -70)]
second_hand = [QPoint(2, 8), QPoint(-2, 8), QPoint(0, -90)]
hour_color = QColor(0x8b, 0, 0xff)
minute_color = QColor(0, 0xbf, 0xff, 191)
second_color = QColor(0xff, 0x82, 0xab, 191)
side = min(self.width(), self.height())
painter = QPainter(self)
# pre settings
painter.setRenderHint(QPainter.Antialiasing)
painter.translate(self.width() / 2, self.height() / 2)
painter.scale(side / 200, side / 200)
painter.setPen(Qt.NoPen)
# draw hour scale & hour hand
painter.setBrush(hour_color)
painter.save()
painter.rotate(30 * (self._hour + self._minute / 60))
painter.drawConvexPolygon(hour_hand)
painter.restore()
painter.setPen(hour_color)
for i in range(12):
painter.drawLine(88, 0, 96, 0)
painter.rotate(30)
painter.setPen(Qt.NoPen)
# draw minute scale & minute hand
painter.setBrush(minute_color)
painter.save()
painter.rotate(6 * (self._minute + self._second / 60))
painter.drawConvexPolygon(minute_hand)
painter.restore()
painter.setPen(minute_color)
for i in range(60):
if i % 5:
painter.drawLine(92, 0, 96, 0)
painter.rotate(6.0)
painter.setPen(Qt.NoPen)
# draw second scale & second hand
painter.setBrush(second_color)
painter.save()
painter.rotate(6 * self._second)
painter.drawConvexPolygon(second_hand)
painter.restore()
def paintEvent(self, event):
painter = QPainter(self)
painter.setRenderHint(QPainter.HighQualityAntialiasing)
# determine max width/height of all labels
if self._maxLabelWidth is None or self._maxLabelHeight is None:
self._maxLabelWidth = 0
self._maxLabelHeight = 0
for k in self.labels.values():
b = painter.boundingRect(
QRectF(0, 0, 0, 0),
int(Qt.AlignLeft) | int(Qt.AlignVCenter), str(k))
self._maxLabelWidth = max(self._maxLabelWidth, b.width())
self._maxLabelHeight = max(self._maxLabelHeight, b.height())
barRect = self.rect()
if self._orientation == 'Vertical':
# translate Y axis
matrix = QMatrix()
matrix.translate(0, self.height() - self.margin)
matrix.scale(1, -1)
painter.setMatrix(matrix)
self.gradient.setFinalStop(0, self.height() - self.margin)
barRect.setWidth(self._barThickness)
barRect.setHeight(barRect.height() - 2 * self.margin)
painter.fillRect(barRect, self.gradient)
# restore normal coordinates
painter.scale(1, -1)
self.setMinimumWidth(self._barThickness + self._labelMargin +
self._maxLabelWidth)
elif self._orientation == 'Horizontal':
self.margin = self._maxLabelWidth / 2 + self._labelMargin
barRect.setHeight(self._barThickness)
barRect.setLeft(
self.margin
) # reduces width by margin (as opposed to shifting)
# Reduce the width by another margin to pull off the right hand side
barRect.setWidth(barRect.width() - self.margin)
painter.fillRect(barRect, self.gradient)
line_step = barRect.width() / 20
pos = barRect.left()
while pos <= barRect.right():
painter.drawLine(pos,
2 * (barRect.bottom() - barRect.top()) / 3,
pos, barRect.bottom())
pos += line_step
self.setMinimumHeight(self._maxLabelHeight + self._barThickness +
self._labelMargin)
for pos, label in self.labels.items():
# Figure coordinate position. 1=height-margin for vertical, or width-margin for horizontal
if self._orientation == 'Vertical':
lpos = -1 * ((self.height() - (2 * self.margin)) * pos)
painter.drawText(self._barThickness + self._labelMargin,
(.5 * self._maxLabelHeight) + lpos, label)
elif self._orientation == 'Horizontal':
text_rect = painter.boundingRect(QRectF(0, 0, 0, 0),
int(Qt.AlignLeft), str(label))
lpos = ((self.width() - (2 * self.margin)) * pos
) # Center position
lleft = lpos - text_rect.width() / 2
painter.drawText(lleft + self.margin, self.height() - 1, label)
