def createImage(self, color, alpha=255):
self._color = QColor(color)
self._color.setAlpha(255)
self._image = QImage(self.size(), QImage.Format_ARGB32)
painter = QPainter()
painter.begin(self._image)
painter.setRenderHint(QPainter.Antialiasing, True)
painter.setRenderHint(QPainter.SmoothPixmapTransform, True)
# 背景色
painter.fillRect(self.rect(), color)
# 白色渐变
gradient = QLinearGradient(0, 0, self.width(), 0)
gradient.setColorAt(0, Qt.white)
gradient.setColorAt(1, QColor.fromHslF(0.055, 0.42, 0.65, 0))
painter.fillRect(self.rect(), gradient)
# 黑色渐变
gradient = QLinearGradient(0, self.height(), 0, 0)
gradient.setColorAt(1, QColor.fromHslF(0.055, 0.42, 0.65, 0))
gradient.setColorAt(0, Qt.black)
painter.fillRect(self.rect(), gradient)
painter.end()
self.update()
if self._image and self._pointerPos:
self.colorChanged.emit(
self._image.pixelColor(
max(min(self._pointerPos.x(),
self.width() - 1), 0),
max(min(self._pointerPos.y(),
self.height() - 1), 0)))
def getColorByValue(self, value):
"""Get QVector4D-color from green (value == 0) to red (value == 1)
:param value: 0 - 1
"""
hue = 120 * (1 - value) / 360
color = QColor.fromHslF(hue, 1, 0.5)
color_vec = QVector4D(color.redF(), color.greenF(), color.blueF(), 0.5)
return color_vec
def get_foreground_color(color: QColor):
"""Получить цвет текста по цвету фона
:param color: Цвет фона
:type color: QColor
"""
text_color = QColor.fromHslF((color.hslHueF() + 0.5) % 1,
(color.hslSaturationF() + 0.5) % 1,
(color.lightnessF() + 0.5) % 1)
return text_color
def paintEvent(self, event):
painter = QPainter(self)
image = QImage(100, 100, QImage.Format_ARGB32)
for x in range(100):
for y in range(100):
s = x / 100.0
l = (100 - y) / 100.0
a = 1.0
color = QColor.fromHslF(self._hue, s, l, a)
image.setPixel(x, y, color.rgba())
painter.drawImage(0, 0, image)
def update_text(self, min_val):
self.min_val = min_val
if self.val < self.min_val:
self.back = QColor(Qt.lightGray)
else:
p = (self.val - self.min_val) / (1 - self.min_val)
hue = 120 / 360 * p
self.back = QColor.fromHslF(hue, 0.6, 0.5)
self.front = get_foreground_color(self.back)
self.setBackground(QBrush(self.back))
self.setForeground(QBrush(self.front))
self.setText(str(int(self.val * 100)) + '%')
def updateColor(self, color):
"""Sets the top right color of the panel."""
color = QColor(color)
color.setAlpha(255)
self._color = color
self._image = QImage(self.size(), QImage.Format_ARGB32)
painter = SmoothPainter(self._image)
# Render top right corner
# Choose brightest, most saturated color for the given hue. Undefined hues (greys) should default to red hue.
h = max(0, color.hsvHue())
color_full = QColor.fromHsv(h, 255, 255)
painter.fillRect(self.rect(), color_full)
# Create vertical shading
gradient = QLinearGradient(0, 0, self.width(), 0)
gradient.setColorAt(0, Qt.white)
gradient.setColorAt(1, QColor.fromHslF(0.055, 0.42, 0.65, 0))
painter.fillRect(self.rect(), gradient)
# Create horizontal shading
gradient = QLinearGradient(0, self.height(), 0, 0)
gradient.setColorAt(1, QColor.fromHslF(0.055, 0.42, 0.65, 0))
gradient.setColorAt(0, Qt.black)
painter.fillRect(self.rect(), gradient)
self._createSkinToneIndicator(painter)
painter.end()
w, h = self.width(), self.height()
_, s, v, _ = color.getHsvF()
x, y = s * w, (1 - v) * h
self._pointerPos = QPoint(x, y)
self.update()
def getColor(self, event):
x = event.pos().x()
y = event.pos().y()
if x < 0:
x = 0
if x > 100:
x = 100
if y < 0:
y = 0
if y > 100:
y = 100
s = x / 100.0
l = (100 - y) / 100.0
a = 1.0
return QColor.fromHslF(self._hue, s, l, a)
def get_color(self):
hue = 120 * self.weight / 360
color = QColor.fromHslF(hue, 1, 0.5)
return color
def lightnessValueChanged(self, value):
color = QColor.fromHslF(self.hue.value() / 100.0, self.saturation.value() / 100.0, value / 100.0, 1.0)
self.setColorParts(color)
self.colorChanged.emit(color)
def huePicked(self):
value = self.hueSlider.value()
self.colorPicker.setHue(value / 100.0)
color = QColor.fromHslF(value / 100.0, self.saturation.value() / 100.0, self.lightness.value() / 100.0, 1.0)
self.setColorParts(color)
self.colorChanged.emit(color)
def hueValueChanged(self, value):
self.hueSlider.setValue(value)
color = QColor.fromHslF(value / 100.0, self.saturation.value() / 100.0, self.lightness.value() / 100.0, 1.0)
self.setColorParts(color)
self.colorChanged.emit(color)
def hueChanged(self, value):
self.colorPicker.setHue(value / 100.0)
color = QColor.fromHslF(value / 100.0, self.saturation.value() / 100.0, self.lightness.value() / 100.0, 1.0)
self.setColorParts(color)
def get_color_by_weight(w: int):
hue = 120 * w / 360
color = QColor.fromHslF(hue, 1, 0.5)
return color
