forked from jazzycamel/QLed
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QLed.py
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QLed.py
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from colorsys import rgb_to_hls, hls_to_rgb
import six
if six.PY3:
from PyQt5.QtWidgets import QApplication, QWidget, QGridLayout, QSizePolicy, QStyleOption
from PyQt5.QtGui import QPainter
from PyQt5.QtCore import pyqtSignal, Qt, QSize, QTimer, QByteArray, QRectF, pyqtProperty
from PyQt5.QtSvg import QSvgRenderer
else:
from PyQt4.QtGui import QApplication, QWidget, QPainter, QGridLayout, QSizePolicy, QStyleOption
from PyQt4.QtCore import pyqtSignal, Qt, QSize, QTimer, QByteArray, QRectF, pyqtProperty
from PyQt4.QtSvg import QSvgRenderer
class QLed(QWidget):
Circle = 1
Round = 2
Square = 3
Triangle = 4
Red = 1
Green = 2
Yellow = 3
Grey = 4
Orange = 5
Purple = 6
Blue = 7
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}
colours = {Red : (0xFF, 0x00, 0x00),
Green : (0x87, 0xD7, 0x00),
Yellow: (0xd2, 0xcd, 0x00),
Grey : (0x26, 0x26, 0x26),
Orange: (0xFF, 0x9F, 0x00),
Purple: (0xAF, 0x00, 0xFF),
Blue : (0x00, 0xD7, 0xFF)}
clicked=pyqtSignal()
def __init__(self, parent=None, **kwargs):
self.m_value=False
self.m_onColour=QLed.Red
self.m_offColour=QLed.Grey
self.m_shape=QLed.Circle
QWidget.__init__(self, parent, **kwargs)
self._pressed=False
self.renderer=QSvgRenderer()
def value(self): return self.m_value
def setValue(self, value):
self.m_value=value
self.update()
value=pyqtProperty(bool, value, setValue)
def onColour(self): return self.m_onColour
def setOnColour(self, newColour):
self.m_onColour=newColour
self.update()
onColour=pyqtProperty(int, onColour, setOnColour)
def offColour(self): return self.m_offColour
def setOffColour(self, newColour):
self.m_offColour=newColour
self.update()
offColour=pyqtProperty(int, offColour, setOffColour)
def shape(self): return self.m_shape
def setShape(self, newShape):
self.m_shape=newShape
self.update()
shape=pyqtProperty(int, shape, setShape)
def sizeHint(self):
if self.m_shape==QLed.Triangle: return QSize(64,48)
elif self.m_shape==QLed.Round: return QSize(96, 48)
return QSize(48,48)
def adjust(self, r, g, b):
def normalise(x): return x/255.0
def denormalise(x): return int(x*255.0)
(h,l,s)=rgb_to_hls(normalise(r),normalise(g),normalise(b))
(nr,ng,nb)=hls_to_rgb(h,l*1.5,s)
return (denormalise(nr),denormalise(ng),denormalise(nb))
def paintEvent(self, event):
option=QStyleOption()
option.initFrom(self)
h=option.rect.height()
w=option.rect.width()
if self.m_shape in (QLed.Triangle, QLed.Round):
aspect=(4/3.0) if self.m_shape==QLed.Triangle else 2.0
ah=w/aspect
aw=w
if ah>h:
ah=h
aw=h*aspect
x=abs(aw-w)/2.0
y=abs(ah-h)/2.0
bounds=QRectF(x,y,aw,ah)
else:
size=min(w,h)
x=abs(size-w)/2.0
y=abs(size-h)/2.0
bounds=QRectF(x,y,size,size)
painter=QPainter(self);
painter.setRenderHint(QPainter.Antialiasing, True);
(dark_r,dark_g,dark_b)=self.colours[self.m_onColour if self.m_value else self.m_offColour]
dark_str="rgb(%d,%d,%d)" % (dark_r,dark_g,dark_b)
light_str="rgb(%d,%d,%d)" % self.adjust(dark_r,dark_g,dark_b)
if six.PY3:
__xml=(self.shapes[self.m_shape]%(dark_str,light_str)).encode('utf8')
self.renderer.load(QByteArray(__xml))
else: self.renderer.load(QByteArray(self.shapes[self.m_shape] % (dark_str,light_str)))
self.renderer.render(painter, bounds)
def mousePressEvent(self, event):
self._pressed=True
QWidget.mousePressEvent(self, event)
def mouseReleaseEvent(self, event):
if self._pressed:
self._pressed=False
self.clicked.emit()
QWidget.mouseReleaseEvent(self, event)
def toggleValue(self):
self.m_value=not self.m_value;
self.update()
if __name__=="__main__":
from sys import argv, exit
class Test(QWidget):
def __init__(self, parent=None):
QWidget.__init__(self, parent)
self.setWindowTitle("QLed Test")
_l=QGridLayout()
self.setLayout(_l)
self.leds=[]
for row, shape in enumerate(QLed.shapes.keys()):
for col, colour in enumerate(QLed.colours.keys()):
if colour==QLed.Grey: continue
led=QLed(self, onColour=colour, shape=shape)
_l.addWidget(led, row, col, Qt.AlignCenter)
self.leds.append(led)
self.toggleLeds()
def toggleLeds(self):
for led in self.leds: led.toggleValue()
QTimer.singleShot(1000, self.toggleLeds)
a=QApplication(argv)
t=Test()
t.show()
t.raise_()
exit(a.exec_())