class Example(QWidget):
def __init__(self):
super().__init__()
self.initUI()
def initUI(self):
self.col = QColor(0, 0, 0)
redb = QPushButton('Red', self)
redb.setCheckable(True)
redb.move(10, 10)
redb.clicked[bool].connect(self.setColor)
greenb = QPushButton('Green', self)
greenb.setCheckable(True)
greenb.move(10, 60)
greenb.clicked[bool].connect(self.setColor)
blueb = QPushButton('Blue', self)
blueb.setCheckable(True)
blueb.move(10, 110)
blueb.clicked[bool].connect(self.setColor)
self.square = QFrame(self)
self.square.setGeometry(150, 20, 100, 100)
self.square.setStyleSheet("QWidget { background-color: %s }" %
self.col.name())
self.setGeometry(300, 300, 300, 250)
self.setWindowTitle('Toggle button')
self.show()
def setColor(self, pressed):
source = self.sender()
if pressed:
val = 255
else:
val = 0
if source.text() == "Red":
self.col.setRed(val)
elif source.text() == "Green":
self.col.setGreen(val)
else:
self.col.setBlue(val)
self.square.setStyleSheet("QFrame { background-color: %s }" %
self.col.name())
class ColorImage(QQuickPaintedItem):
def __init__(self, parent=None):
super().__init__(parent)
self._source = QUrl()
self._color = QColor()
self._svg_data = b""
self._renderer = None
sourceChanged = pyqtSignal()
colorChanged = pyqtSignal()
def _updateSVG(self) -> None:
if not self._source or self._source.toLocalFile() == "":
return
try:
with open(self._source.toLocalFile(), "rb") as f:
self._svg_data = f.read()
except FileNotFoundError:
Logger.log(
"w",
f"Unable to find image located at {self._source.toLocalFile()}"
)
return
self._svg_data = self._svg_data.replace(
b"<svg ",
b"<svg fill=\"%s\" " % self._color.name().encode("utf-8"))
self._renderer = QSvgRenderer(self._svg_data)
self.update()
def setSource(self, source: QUrl) -> None:
if self._source != source:
self._source = source
self.sourceChanged.emit()
self._updateSVG()
@pyqtProperty(QUrl, fset=setSource, notify=sourceChanged)
def source(self) -> QUrl:
return self._source
def setColor(self, color: QColor) -> None:
if self._color != color:
self._color = color
self.colorChanged.emit()
self._updateSVG()
@pyqtProperty(QColor, fset=setColor, notify=colorChanged)
def color(self) -> QColor:
return self._color
def paint(self, painter: QPainter) -> None:
pixel_ratio = Application.getInstance().getMainWindow(
).effectiveDevicePixelRatio()
painter.scale(1 / pixel_ratio, 1 / pixel_ratio)
if self._renderer:
self._renderer.render(painter)
def initUI(self):
col = QColor(0, 0, 0)
self.btn = QPushButton('Dialog', self)
self.btn.move(20, 20)
self.btn.clicked.connect(self.showDialog)
self.frm = QFrame(self)
self.frm.setStyleSheet("QWidget { background-color: %s }" % col.name())
self.frm.setGeometry(130, 22, 200, 200)
self.setGeometry(300, 300, 450, 350)
self.setWindowTitle('Color dialog')
self.show()
