Можно ли задать цвет заднего фона для QLabel без использование css
Можно ли задать цвет заднего фона для QLabel без использование сss
class MyLabel(QLabel):
def __init__(self, *args, **kwargs):
super().__init__( *args, **kwargs)
def _set_color(self, col):
palette = self.palette()
palette.setColor(QtGui.QPalette.Background, QtGui.QColor(col))
self.setAutoFillBackground(True)
self.setPalette(palette)
color = QtCore.pyqtProperty(QtGui.QColor, fset=_set_color)
class Test:
def __init__(self, parent):
self.parent = parent
self.width = 48
self.height = 24
self.border_radius = self.height // 2
self.switch_radius = self.height - 4
self.switch_border_radius = self.switch_radius // 2
self.switch_color = '#ffffff'
self.active_background_color = '#240DC4'
self.disable_background_color = '#CCCCCC'
self.animation_duration = 400
self.background = self._make_background()
# Для примера вызываем метод смены заднего фона с конструктора класса
self._change_background()
def _make_background(self):
background = MyLabel(self.parent)
background.setObjectName("label_5")
background.setGeometry(QtCore.QRect(self.x, self.y, self.width, self.height))
background.setStyleSheet(
"border-radius: %ipx;" \
"background-color: %s;" % (self.border_radius, self.disable_background_color)
)
return background
def _change_background(self):
self.background_color_animation = QtCore.QPropertyAnimation(self.background, b"color")
self.background_color_animation.setDuration(self.animation_duration)
self.background_color_animation.setStartValue(QtGui.QColor(50, 50, 50))
self.background_color_animation.setEndValue(QtGui.QColor(255, 50, 50))
self.background_color_animation.setEasingCurve(QtCore.QEasingCurve.InOutCubic)
self.background_color_animation.start()
Ответы (1 шт):
Автор решения: S. Nick
→ Ссылка
Я не могу воспроизвести ваш пример, потому что он не воспроизводимый. Но глядя на ваше изображение, я вам покажу что-то похожее на то, что вы излбразили.
from PyQt5.QtCore import (Qt, QSize, QPoint, QPointF, QRectF, pyqtProperty,
QEasingCurve, QPropertyAnimation, QSequentialAnimationGroup, pyqtSlot)
from PyQt5.QtGui import QColor, QBrush, QPaintEvent, QPen, QPainter
from PyQt5.QtWidgets import (QApplication, QWidget, QVBoxLayout, QLabel,
QCheckBox, QApplication)
class AnimatedToggle(QCheckBox):
_transparent_pen = QPen(Qt.transparent)
_light_grey_pen = QPen(Qt.lightGray)
def __init__(
self,
parent=None,
bar_color=Qt.gray,
checked_color="#00B0FF",
handle_color=Qt.white,
pulse_unchecked_color="#44999999",
pulse_checked_color="#4400B0EE"
):
super().__init__(parent)
self._bar_brush = QBrush(bar_color)
self._bar_checked_brush = QBrush(QColor(checked_color).lighter())
self._handle_brush = QBrush(handle_color)
self._handle_checked_brush = QBrush(QColor(checked_color))
self._pulse_unchecked_animation = QBrush(QColor(pulse_unchecked_color))
self._pulse_checked_animation = QBrush(QColor(pulse_checked_color))
self.setContentsMargins(8, 0, 8, 0)
self._handle_position = 0
self._pulse_radius = 0
self.animation = QPropertyAnimation(self, b"handle_position", self)
self.animation.setEasingCurve(QEasingCurve.InOutCubic)
self.animation.setDuration(200)
self.pulse_anim = QPropertyAnimation(self, b"pulse_radius", self)
self.pulse_anim.setDuration(350)
self.pulse_anim.setStartValue(10)
self.pulse_anim.setEndValue(20)
self.animations_group = QSequentialAnimationGroup()
self.animations_group.addAnimation(self.animation)
self.animations_group.addAnimation(self.pulse_anim)
self.stateChanged.connect(self.setup_animation)
def sizeHint(self):
return QSize(58, 45)
def hitButton(self, pos: QPoint):
return self.contentsRect().contains(pos)
@pyqtSlot(int)
def setup_animation(self, value):
self.animations_group.stop()
if value:
self.animation.setEndValue(1)
else:
self.animation.setEndValue(0)
self.animations_group.start()
def paintEvent(self, e: QPaintEvent):
contRect = self.contentsRect()
handleRadius = round(0.24 * contRect.height())
p = QPainter(self)
p.setRenderHint(QPainter.Antialiasing)
p.setPen(self._transparent_pen)
barRect = QRectF(
0, 0,
contRect.width() - handleRadius, 0.40 * contRect.height()
)
barRect.moveCenter(contRect.center())
rounding = barRect.height() / 2
trailLength = contRect.width() - 2 * handleRadius
xPos = contRect.x() + handleRadius + trailLength * self._handle_position
if self.pulse_anim.state() == QPropertyAnimation.Running:
p.setBrush(
self._pulse_checked_animation if
self.isChecked() else self._pulse_unchecked_animation)
p.drawEllipse(QPointF(xPos, barRect.center().y()),
self._pulse_radius, self._pulse_radius)
if self.isChecked():
p.setBrush(self._bar_checked_brush)
p.drawRoundedRect(barRect, rounding, rounding)
p.setBrush(self._handle_checked_brush)
else:
p.setBrush(self._bar_brush)
p.drawRoundedRect(barRect, rounding, rounding)
p.setPen(self._light_grey_pen)
p.setBrush(self._handle_brush)
p.drawEllipse(
QPointF(xPos, barRect.center().y()),
handleRadius, handleRadius)
p.end()
@pyqtProperty(float)
def handle_position(self):
return self._handle_position
@handle_position.setter
def handle_position(self, pos):
self._handle_position = pos
self.update()
@pyqtProperty(float)
def pulse_radius(self):
return self._pulse_radius
@pulse_radius.setter
def pulse_radius(self, pos):
self._pulse_radius = pos
self.update()
if __name__ == "__main__":
import sys
app = QApplication(sys.argv)
window = QWidget()
mainToggle = AnimatedToggle()
secondaryToggle = AnimatedToggle(
checked_color="#FFB000",
pulse_checked_color="#44FFB000"
)
mainToggle.setFixedSize(mainToggle.sizeHint())
secondaryToggle.setFixedSize(mainToggle.sizeHint())
window.setLayout(QVBoxLayout())
window.layout().addWidget(QLabel("Main Toggle"))
window.layout().addWidget(mainToggle)
window.layout().addWidget(QLabel("Secondary Toggle"))
window.layout().addWidget(secondaryToggle)
mainToggle.stateChanged.connect(secondaryToggle.setChecked)
window.resize(100, 200)
window.show()
sys.exit(app.exec_())
