def showEvent(self, event: QShowEvent = None) -> None:
# 首次显示记住当前背景截图,用于获取颜色值
self.__bgPix = QPixmap(self.width(), self.height())
self.__bgPix.fill(Qt.transparent)
painter: QPainter = QPainter()
painter.begin(self.__bgPix)
linearGradient: QLinearGradient = QLinearGradient()
if self.__hsbMode:
# 起始坐标和结束坐标换个位置可改变颜色顺序
linearGradient.setStart(
QPoint(self.__bgRect.x(), self.__bgRect.height()))
linearGradient.setFinalStop(
QPoint(self.__bgRect.x(), self.__bgRect.y()))
# 由下往上,饱和度百分值由0增加到1.0
for i in [i * 0.0625 for i in range(17)]:
linearGradient.setColorAt(i, QColor.fromHsvF(i, 1, 1, 1))
else:
linearGradient.setStart(QPointF(0, 0))
linearGradient.setFinalStop(QPointF(0, self.height()))
linearGradient.setColorAt(0.0, self.__topColor)
linearGradient.setColorAt(1.0, self.__bottomColor)
painter.setPen(Qt.NoPen)
painter.setBrush(linearGradient)
rect: QRect = QRect(self.__borderWidth // 2, self.__borderWidth // 2,
self.width() - self.__borderWidth,
self.height() - self.__borderWidth)
painter.drawRect(rect)
painter.end()
self.initColor()
def colorChangedHSB(self, color: QColor, hue: float, sat: float) -> None:
self.colorPanelBar.topColor = color
self.colorPanelBar.borderColor = color
self.btnHue.text = "Hue\n%0.1f" % round(hue, 1)
self.btnSat.text = "Sat\n%0.1f" % round(sat, 1)
self.btnBright.text = "Bright\n%0.1f" % round(
self.colorPanelBar.percent, 1)
c: QColor = QColor.fromHsvF(hue / 360, sat / 100,
self.colorPanelBar.percent / 100)
self.setColor(c)
def __init__(
self,
default_node_panel_factory: "providers.Factory",
name="NodesWindow",
parent: "QWidget" = None,
):
super().__init__(parent)
self.name = name
self.color_identifier = QColor.fromHsvF(random.random(), 0.65, 0.6)
self.__default_node_panel_factory = default_node_panel_factory
self.__node_panels = {}
self.__background_widget = QWidget()
self.__background_widget.setFixedWidth(0)
self.setCentralWidget(self.__background_widget)
def paintEvent(self, event):
"""Overridden method. Paint gauge as series of lines, and adds text labels."""
painter = QPainter(self)
painter.setRenderHints(QPainter.Antialiasing | QPainter.SmoothPixmapTransform)
swidth = max(self.width() - 100, 20)
sheight = self.height()
if self._min == self._max:
painter.setBrush(QBrush(Qt.red, Qt.DiagCrossPattern))
painter.drawRect(0, 0, swidth, sheight)
painter.setPen(Qt.black)
if self._min is not None:
painter.drawText(
0,
0,
self.width() - swidth,
sheight,
Qt.AlignCenter,
"{0:.2f}".format(self._min),
)
return
for x in range(0, sheight):
painter.setPen(
QColor.fromHsvF((x / sheight) * 0.7, min(1, 1.5 - (x / sheight)), 1)
)
painter.drawLine(0, x, swidth, x)
painter.setPen(Qt.black)
painter.drawText(
0,
0,
self.width() - swidth,
30,
Qt.AlignCenter,
"{0:.2f}".format(self._max),
)
painter.drawText(
0,
sheight - 30,
self.width() - swidth,
30,
Qt.AlignCenter,
"{0:.2f}".format(self._min),
)
def drawBg(self, painter: QPainter) -> None:
painter.save()
# 不可用背景灰色
if self.isEnabled():
linearGradient: QLinearGradient = QLinearGradient()
if self.__hsbMode:
# 起始坐标和结束坐标换个位置可改变颜色顺序
linearGradient.setStart(
QPoint(self.__bgRect.x(), self.__bgRect.height()))
linearGradient.setFinalStop(
QPoint(self.__bgRect.x(), self.__bgRect.y()))
# 由下往上,饱和度百分值由0增加到1.0
for i in [i * 0.0625 for i in range(17)]:
linearGradient.setColorAt(i, QColor.fromHsvF(i, 1, 1, 1))
painter.setPen(Qt.NoPen)
else:
linearGradient.setStart(QPointF(0, 0))
linearGradient.setFinalStop(QPointF(0, self.height()))
linearGradient.setColorAt(0.0, self.__topColor)
linearGradient.setColorAt(1.0, self.__bottomColor)
pen: QPen = QPen()
pen.setWidthF(self.__borderWidth)
pen.setColor(self.__borderColor)
pen.setCapStyle(Qt.RoundCap)
pen.setJoinStyle(Qt.RoundJoin)
painter.setPen(pen)
painter.setBrush(linearGradient)
else:
painter.setPen(Qt.NoPen)
painter.setBrush(self.__disableColor)
painter.drawRoundedRect(self.__bgRect, self.__borderRadius,
self.__borderRadius)
painter.restore()
def color_from_index(i, count, base_hue=0.0, saturation=1.0):
golden_ratio = 0.618033988749895
h = golden_ratio * (360 / count) * i
h = ((base_hue + h) % 360) / 360
# return QColor.fromHsvF(217 / 360, 0.60, 1.0, 1.0)
return QColor.fromHsvF(h, saturation, 1.0, 1.0)
def setUp(self):
self.original = QColor.fromHsvF(0.2, 0.3, 0.4, 0.5)
def testReduceHsv(self):
self.reduceColor(QColor.fromHsvF(0.1, 0.2, 0.3, 0.4))
def setUp(self):
self.original = QColor.fromHsvF(0.2, 0.3, 0.4, 0.5)
def testReduceHsv(self):
self.reduceColor(QColor.fromHsvF(0.1, 0.2, 0.3, 0.4))
def updateColor(self, color: QColor, value: float, percent: float) -> None:
item: ColorPanelBar = self.sender()
index: int = self.__items.index(item)
if index is 0:
# 获取当前HSB处的颜色值
self.__items[1].topColor = color
self.__items[2].topColor = color
self.__items[1].borderColor = color
self.__items[2].borderColor = color
elif index is 1:
self.__items[2].topColor = color
self.__items[2].borderColor = color
elif index is 2:
self.__items[1].topColor = color
self.__items[1].borderColor = color
elif index == 3:
self.__items[6].percent = 100 - percent
elif index == 4:
self.__items[7].percent = 100 - percent
elif index == 5:
self.__items[8].percent = 100 - percent
elif index == 6:
self.__items[3].percent = 100 - percent
elif index == 7:
self.__items[4].percent = 100 - percent
elif index == 8:
self.__items[5].percent = 100 - percent
# 如果是HSB变化则CMY和RGB变化
if index < 3:
hue: float = self.__items[0].percent / 100
sat: float = self.__items[1].percent / 100
bright: float = self.__items[2].percent / 100
# 组合HSB当前值,然后转为CMY和RGB计算百分比进行设置
color: QColor = QColor.fromHsvF(hue, sat, bright)
percentRed: float = color.redF() * 100
percentGreen: float = color.greenF() * 100
percentBlue: float = color.blueF() * 100
self.__items[3].percent = 100 - percentRed
self.__items[4].percent = 100 - percentGreen
self.__items[5].percent = 100 - percentBlue
self.__items[6].percent = percentRed
self.__items[7].percent = percentGreen
self.__items[8].percent = percentBlue
# 根据百分比获取颜色值
red: float = self.__items[6].percent / 100
green: float = self.__items[7].percent / 100
blue: float = self.__items[8].percent / 100
currentColor: QColor = QColor.fromRgbF(red, green, blue)
self.colorChanged.emit(currentColor, self.__items[0].value,
self.__items[1].percent,
self.__items[2].percent)
# 如果是CMY或者RGB变化则HSB变化
if index >= 3:
# hue活出现负数=白色,要矫正
percentHue: float = currentColor.hueF() * 100
if percentHue < 0:
percentHue = 0
percentSat: float = currentColor.saturationF() * 100
percentBright: float = currentColor.lightnessF() * 100
# 计算当前值所占百分比
self.__items[0].percent = percentHue
self.__items[1].percent = percentSat
self.__items[2].percent = percentBright
self.__items[1].topColor = currentColor
self.__items[2].topColor = currentColor
self.__items[1].borderColor = currentColor
self.__items[2].borderColor = currentColor
def paint(self, painter, option, widget):
"""Paint actuator. Overridden method."""
# if range isn't set, don't draw
if self._min is None or self._max is None:
return
painter.setRenderHints(QPainter.Antialiasing
| QPainter.SmoothPixmapTransform)
# paint grayed circle for actuators not providing the selected value
if self._state == self.STATE_INACTIVE:
painter.setPen(QPen(Qt.gray, self._scale, Qt.DotLine))
painter.drawEllipse(self._center, 10 * self._scale,
10 * self._scale)
return
# draw rectangle around selected actuator
if self._selected:
painter.setPen(QPen(Qt.black, self._scale))
painter.drawRect(self.boundingRect())
else:
painter.setPen(QPen(Qt.red, self._scale))
# draw selected actuator in red color
if self._state == self.STATE_WARNING:
painter.setBrush(Qt.red)
# if range span is 0, fill with dotted pattern
elif self._min == self._max:
brush = QBrush(Qt.red, Qt.DiagCrossPattern)
brush.setTransform(QTransform().scale(self._scale / 3,
self._scale / 3))
painter.setBrush(brush)
# draw using value as index into possible colors in HSV model
else:
hue = 1 - (self._data - self._min) / (self._max - self._min)
painter.setBrush(QColor.fromHsvF(hue * 0.7, min(1, 1.5 - hue), 1))
# draw actuator, write value
painter.drawEllipse(self._center, 10 * self._scale, 10 * self._scale)
painter.setPen(Qt.black)
font = painter.font()
font.setPixelSize(6.5 * self._scale)
font.setItalic(True)
painter.setFont(font)
painter.drawText(
self._center.x() - 10 * self._scale,
self._center.y() - 10 * self._scale,
20 * self._scale,
10 * self._scale,
Qt.AlignBottom | Qt.AlignHCenter,
str(self.id),
)
vstr = f"{self.data:.2f}"
if len(vstr) > 6:
font.setPixelSize(3.5 * self._scale)
elif len(vstr) > 3:
font.setPixelSize(4.5 * self._scale)
font.setItalic(False)
font.setBold(True)
painter.setFont(font)
# draw value
painter.drawText(
self._center.x() - 10 * self._scale,
self._center.y(),
20 * self._scale,
10 * self._scale,
Qt.AlignTop | Qt.AlignHCenter,
vstr,
)
