quicktime player like control bar in pyqt

Hi I am attempting to make Quicktime player like control bar shown belowAttachment 9884

However I was also attempting to make round buttons, but neither round buttons nor the quicktime like just the icon on button seems to work,

Here is the code, I guess it will be useful for anyone ;), Please tell me how can I make quicktime player like control bar

also a thin black line is showing up around the window and the buttons what is causing that and how can I get rid of it ?

Code:

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from PyQt4 import QtGui, QtCore
import sys
 
class ControlBar(QtGui.QWidget):
	"""	docstring for ControlBar"""
	def __init__(self, parent=None):
		super(ControlBar, self).__init__(parent)
		self.resize(440, 100)
		self.setStyleSheet("""
			QWidget{
			opacity: 50;
			}
			""")
		self.setWindowFlags(QtCore.Qt.FramelessWindowHint)
		self.setWindowTitle("QLinearGradient Vertical Gradient ")
		self.setAttribute(QtCore.Qt.WA_TranslucentBackground)
		self.buildUi()
 
	def mousePressEvent(self, event):
		self.offset = event.pos()
 
	def mouseMoveEvent(self, event):
		try:
			  x=event.globalX()
			  y=event.globalY()
			  x_w = self.offset.x()
			  y_w = self.offset.y()
			  self.move(x-x_w, y-y_w)
		except: pass   
 
	def paintEvent(self, ev):
		painter = QtGui.QPainter(self)
		gradient = QtGui.QLinearGradient(QtCore.QRectF(self.rect()).topLeft(),QtCore.QRectF(self.rect()).bottomLeft())
		gradient.setColorAt(0.0, QtCore.Qt.black)
		gradient.setColorAt(0.4, QtCore.Qt.gray)
		gradient.setColorAt(0.7, QtCore.Qt.black)
		painter.setBrush(gradient)
		self.openBtn.clicked.connect(self.testMessage)
		self.backBtn.clicked.connect(self.closeMe)
		painter.drawRoundedRect(0, 0, 440, 100, 20.0, 20.0)
 
	def buildUi(self):
		self.hoelayout = QtGui.QHBoxLayout()
		self.openBtn = RoundEdgeButton("Hello")
		self.backBtn = RoundEdgeButton()
		self.pausBtn = RoundEdgeButton()
		self.nextBtn = RoundEdgeButton()
		self.hoelayout.addStretch(1)
		self.hoelayout.addWidget(self.openBtn)
		self.hoelayout.addStretch(1)
		self.hoelayout.addWidget(self.backBtn)
		self.hoelayout.addStretch(1)
		self.hoelayout.addWidget(self.pausBtn)
		self.hoelayout.addStretch(1)
		self.hoelayout.addWidget(self.nextBtn)
		self.hoelayout.addStretch(1)
		self.setLayout(self.hoelayout)
 
	def closeMe(self):
		self.close()
 
	def testMessage(self):
		QtGui.QMessageBox.about(self, "Testing button pressed look feel", "just to check the pressed feel on button")
 
class RoundEdgeButton(QtGui.QPushButton):
	""" docstring for RoundEdgeButton"""
	def __init__(self,text=None, parent=None):
		super(RoundEdgeButton, self).__init__(parent)
 
		if text:
			self.setText(text)
 
	# def sizeHint(self):
	# 	return QtCore.QSize(90,27)
 
	def paintEvent(self, ev):
		btnPaint = QtGui.QPainter(self)
		btnGradient = QtGui.QLinearGradient(QtCore.QRectF(self.rect()).topLeft(), QtCore.QRectF(self.rect()).bottomLeft())
		btnGradient.setColorAt(0.4, QtCore.Qt.black)
		btnGradient.setColorAt(0.5, QtCore.Qt.white)
		btnGradient.setColorAt(0.5, QtCore.Qt.gray)
		btnGradient.setColorAt(0.4, QtCore.Qt.white)
		btnGradient.setColorAt(0.2, QtCore.Qt.gray)
		btnPaint.setBrush(btnGradient)
		# btnPaint.drawEllipse(10,10,self.width()-10, self.height())
		btnPaint.drawRoundedRect(10, 2, self.width()-12, self.height()-6, 10.0, 10.0)
 
 
if __name__ == '__main__':
	app = QtGui.QApplication(sys.argv)
	win = ControlBar()
	win.show()
	win.raise_()
	sys.exit(app.exec_())

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