def brushChanged(self):
style = QtCore.Qt.BrushStyle(
self.brushStyleComboBox.itemData(
self.brushStyleComboBox.currentIndex(), IdRole))
if style == QtCore.Qt.LinearGradientPattern:
linearGradient = QtGui.QLinearGradient(0, 0, 100, 100)
linearGradient.setColorAt(0.0, QtCore.Qt.white)
linearGradient.setColorAt(0.2, QtCore.Qt.green)
linearGradient.setColorAt(1.0, QtCore.Qt.black)
self.renderArea.setBrush(QtGui.QBrush(linearGradient))
elif style == QtCore.Qt.RadialGradientPattern:
radialGradient = QtGui.QRadialGradient(50, 50, 50, 70, 70)
radialGradient.setColorAt(0.0, QtCore.Qt.white)
radialGradient.setColorAt(0.2, QtCore.Qt.green)
radialGradient.setColorAt(1.0, QtCore.Qt.black)
self.renderArea.setBrush(QtGui.QBrush(radialGradient))
elif style == QtCore.Qt.ConicalGradientPattern:
conicalGradient = QtGui.QConicalGradient(50, 50, 150)
conicalGradient.setColorAt(0.0, QtCore.Qt.white)
conicalGradient.setColorAt(0.2, QtCore.Qt.green)
conicalGradient.setColorAt(1.0, QtCore.Qt.black)
self.renderArea.setBrush(QtGui.QBrush(conicalGradient))
elif style == QtCore.Qt.TexturePattern:
self.renderArea.setBrush(
QtGui.QBrush(QtGui.QPixmap(':/images/brick.png')))
else:
self.renderArea.setBrush(QtGui.QBrush(QtCore.Qt.green, style))
def rebuildDataBrushIfNeeded(self):
if self.rebuildBrush:
self.rebuildBrush = False
dataBrush = QtGui.QConicalGradient()
dataBrush.setCenter(0.5, 0.5)
dataBrush.setCoordinateMode(QtGui.QGradient.StretchToDeviceMode)
for pos, color in self.gradientData:
dataBrush.setColorAt(1.0 - pos, color)
# angle
dataBrush.setAngle(self.nullPosition)
p = self.palette()
p.setBrush(QtGui.QPalette.Highlight, dataBrush)
self.setPalette(p)
def __init__(self):
QtGui.QWidget.__init__(self)
size = 24
self.setFixedSize(size, size)
self.pen_width = 5
top = left = self.pen_width / 2.
bottom = right = size - 1 - self.pen_width
self.area = QtCore.QRectF(top, left, right, bottom)
self.brush = QtGui.QConicalGradient(.5, .5, 0)
self.brush.setCoordinateMode(QtGui.QConicalGradient.ObjectBoundingMode)
self.brush.setColorAt(0, QtCore.Qt.darkGray)
self.brush.setColorAt(1, QtCore.Qt.lightGray)
self.pen = QtGui.QPen(self.brush, self.pen_width)
self.loading_timer = QtCore.QTimer()
self.loading_timer.setInterval(20)
self.loading_timer.timeout.connect(self.rotate)
def paintEvent(self, event):
painter = QtGui.QPainter(self)
painter.setRenderHint(painter.Antialiasing)
rect = event.rect()
gauge_rect = QtCore.QRect(rect)
size = gauge_rect.size()
pos = gauge_rect.center()
gauge_rect.moveCenter(
QtCore.QPoint(pos.x() - size.width(),
pos.y() - size.height()))
gauge_rect.setSize(size * .9)
gauge_rect.moveCenter(pos)
refill_rect = QtCore.QRect(gauge_rect)
size = refill_rect.size()
pos = refill_rect.center()
refill_rect.moveCenter(
QtCore.QPoint(pos.x() - size.width(),
pos.y() - size.height()))
# smaller than .9 == thicker gauge
refill_rect.setSize(size * .9)
refill_rect.moveCenter(pos)
painter.setPen(QtCore.Qt.NoPen)
painter.drawPixmap(rect, self._bg)
painter.save()
grad = QtGui.QConicalGradient(QtCore.QPointF(gauge_rect.center()),
270.0)
grad.setColorAt(.75, QtCore.Qt.green)
grad.setColorAt(.5, QtCore.Qt.yellow)
grad.setColorAt(.25, QtCore.Qt.red)
painter.setBrush(grad)
painter.drawPie(gauge_rect, 225.0 * 16, self._value * 16)
painter.restore()
painter.setBrush(QtGui.QBrush(self._bg.scaled(rect.size())))
painter.drawEllipse(refill_rect)
super(GaugeWidget, self).paintEvent(event)
def initUI(self):
self._conicalGradient = QtGui.QConicalGradient(
self.width() / 2, self.height() / 2, 180)
self._conicalGradient.setColorAt(0.0, QtGui.QColor(0, 255, 255))
self._conicalGradient.setColorAt(0.16, QtGui.QColor(0, 0, 255))
self._conicalGradient.setColorAt(0.33, QtGui.QColor(255, 0, 255))
self._conicalGradient.setColorAt(0.5, QtGui.QColor(255, 0, 0))
self._conicalGradient.setColorAt(0.66, QtGui.QColor(255, 255, 0))
self._conicalGradient.setColorAt(0.83, QtGui.QColor(0, 255, 0))
self._conicalGradient.setColorAt(1.0, QtGui.QColor(0, 255, 255))
self._vertical_gradient = QtGui.QLinearGradient(
0, self._rect.top(),
0, self._rect.top() + self._rect.height())
self._vertical_gradient.setColorAt(0.0, QtGui.QColor(0, 0, 0, 0))
self._vertical_gradient.setColorAt(1.0, QtGui.QColor(0, 0, 0))
self._horizontal_gradient = QtGui.QLinearGradient(
self._rect.left(), 0,
self._rect.left() + self._rect.width(), 0)
self._horizontal_gradient.setColorAt(0.0, QtGui.QColor(255, 255, 255))
def __init__(self, centerX = 0, centerY = 0, angle = 0, alpha = 1): super(ConicalGradientColor, self).__init__(alpha) self.value = QtGui.QConicalGradient(centerX, centerY, angle)
def paintEvent(self, event):
"""
paintEvent(QPaintEvent event)
Custom paint event to draw the gauge.
"""
# In this paint event, we start with the original
# rectangle region from the QPaintEvent, and progressively
# shrink it down from the center to add more and more layers.
painter = QtGui.QPainter(self)
painter.setRenderHint(painter.Antialiasing)
rect = event.rect()
center = QtCore.QPointF(rect.center())
painter.setPen(QtCore.Qt.NoPen)
#
# outer rim
#
grad = QtGui.QConicalGradient(center, 315)
dark = QtGui.QColor(35, 35, 35)
light = QtGui.QColor(185, 185, 185)
grad.setStops([(0.0, dark), (0.5, light), (1.0, dark)])
painter.setBrush(grad)
painter.drawEllipse(rect)
#
# inner rim
#
inner_bevel = self.centerScaleRect(rect, .93)
grad.setAngle(135)
dark = QtGui.QColor(80, 80, 80)
grad.setColorAt(0.0, dark)
grad.setColorAt(1.0, dark)
painter.setBrush(grad)
painter.drawEllipse(inner_bevel)
#
# flat gray surface
#
inside_panel = self.centerScaleRect(inner_bevel, .95)
flat_gray = QtGui.QColor(50, 50, 50)
painter.setBrush(flat_gray)
painter.drawEllipse(inside_panel)
#
# colored gauge values
#
grad.setAngle(270)
grad.setStops([(.2, QtGui.QColor(205, 0, 0)), (.5, QtCore.Qt.yellow),
(.8, QtGui.QColor(0, 205, 0))])
painter.setBrush(grad)
# This remaps the float value to the stop angle
# appropriate for the drawPie() in the paint method
# Negative values mean clockwise
# http://www.riverbankcomputing.co.uk/static/Docs/PyQt4/html/qpainter.html#drawPie
stopAngle = self._value * -270
# start and stop angle for drawPie() are in 1/16th of a degree
# incriments, so we mult them by 16
painter.drawPie(inside_panel, 225.0 * 16, stopAngle * 16)
#
# fill back in the inner flat gray surface (cutout)
#
inside_panel = self.centerScaleRect(inside_panel, .9)
painter.setBrush(flat_gray)
painter.drawEllipse(inside_panel)
super(GaugeWidget, self).paintEvent(event)
