SF.net SVN: fclient:[845] trunk/fclient/fclient/impl/lib/qt4ex/led.py

[<jU...@us...>]

Revision: 845
          http://fclient.svn.sourceforge.net/fclient/?rev=845&view=rev
Author:   jUrner
Date:     2008-08-01 23:51:57 +0000 (Fri, 01 Aug 2008)

Log Message:
-----------
experimental, add a led widget

Added Paths:
-----------
    trunk/fclient/fclient/impl/lib/qt4ex/led.py

Added: trunk/fclient/fclient/impl/lib/qt4ex/led.py
===================================================================
--- trunk/fclient/fclient/impl/lib/qt4ex/led.py	                        (rev 0)
+++ trunk/fclient/fclient/impl/lib/qt4ex/led.py	2008-08-01 23:51:57 UTC (rev 845)
@@ -0,0 +1,121 @@
+"""2 state Led widget mostly taken from Eric4's E4Led, thanks detlev
+(kde4s KLed is incredibly slow...)
+"""
+
+ 
+from PyQt4 import QtCore, QtGui
+#**********************************************************************************
+#
+#**********************************************************************************
+ 
+class Led(QtGui.QWidget):
+	
+	
+	def __init__(self, parent=None, colorOn=QtGui.QColor('green'), colorOff=QtGui.QColor('red'), isOn=True):
+		QtGui.QWidget.__init__(self, parent)
+		
+		self.__isOn = isOn
+		self._colorOn = colorOn
+		self._colorOff =colorOff
+		self._timer = None
+					
+	def isOn(self):
+		return self.__isOn
+	def setOn(self, flag):
+		self.__isOn = flag
+		self.update()
+		return True
+	isOn = QtCore.pyqtProperty("bool",isOn, setOn)
+	
+	
+	def paintEvent(self, event):
+		self.paintRaised()
+		
+		
+	def ledWidth(self):
+		width = self.width()
+				
+		# enshure Led is round
+		if width > self.height():
+			width = self.height()
+			
+		# leave one pixel border
+		width -= 2
+		width = 0 if width < 0 else width
+		return width
+		
+	def paintRaised(self):
+		""""""
+		# Initialize coordinates, width and height of the LED
+		width = self.ledWidth()
+		palette = self.palette()
+		
+		# Calculate the gradient for the LED
+		wh = int(width / 2)
+		color = self.colorOn() if self.isOn else self.colorOff()
+				
+		gradient = QtGui.QRadialGradient(wh, wh, wh, 0.8 * wh, 0.8 * wh)
+		gradient.setColorAt(0.0, color.light(200))
+		gradient.setColorAt(0.6, color)
+		gradient.setColorAt(1.0, color.dark())
+		
+		# now do the drawing
+		paint = QtGui.QPainter(self)
+		paint.setRenderHint(paint.Antialiasing, True)
+		paint.setBrush(QtGui.QBrush(gradient))
+		paint.setPen(QtCore.Qt.NoPen)
+		paint.drawEllipse(1, 1, width, width)
+		paint.end()
+		
+	
+	def colorOn(self):
+		return self._colorOn
+		
+	def colorOff(self):
+		return self._colorOff
+	
+	def setColorOn(self, color):
+		self.colorOn = color
+		if self.isOn():
+			self.update()
+		
+	def setColorOff(self, color):
+		self.colorOff = color
+		if self.isOff():
+			self.update()
+			
+	
+	def flashing(self):
+		if self._timer is not None:
+			return self._timer.isActive()
+		return False
+	
+	def setFlashing(self, flag, interval=300):
+		if flag:
+			if not self._timer:
+				self._timer = QtCore.QTimer(self)
+				self.connect(self._timer, QtCore.SIGNAL('timeout()'), self.onTimerTimeout)
+			self._timer.setInterval(interval)
+			self._timer.start()
+		else:
+			if self._timer is not None:
+				self._timer.stop()
+			
+			
+	def onTimerTimeout(self):
+		if self._timer.isActive():
+			self.setOn(not self.isOn)
+		
+	
+			
+#**********************************************************************************
+#
+#**********************************************************************************
+if __name__ == '__main__':
+	import sys
+	
+	app = QtGui.QApplication(sys.argv)
+	w = Led(None)
+	w.show()
+	res = app.exec_()
+	sys.exit(res)


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