/usr/lib/python2.7/dist-packages/pyqtgraph/widgets/JoystickButton.py is in python-pyqtgraph 0.9.10-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 | from ..Qt import QtGui, QtCore
__all__ = ['JoystickButton']
class JoystickButton(QtGui.QPushButton):
sigStateChanged = QtCore.Signal(object, object) ## self, state
def __init__(self, parent=None):
QtGui.QPushButton.__init__(self, parent)
self.radius = 200
self.setCheckable(True)
self.state = None
self.setState(0,0)
self.setFixedWidth(50)
self.setFixedHeight(50)
def mousePressEvent(self, ev):
self.setChecked(True)
self.pressPos = ev.pos()
ev.accept()
def mouseMoveEvent(self, ev):
dif = ev.pos()-self.pressPos
self.setState(dif.x(), -dif.y())
def mouseReleaseEvent(self, ev):
self.setChecked(False)
self.setState(0,0)
def wheelEvent(self, ev):
ev.accept()
def doubleClickEvent(self, ev):
ev.accept()
def getState(self):
return self.state
def setState(self, *xy):
xy = list(xy)
d = (xy[0]**2 + xy[1]**2)**0.5
nxy = [0,0]
for i in [0,1]:
if xy[i] == 0:
nxy[i] = 0
else:
nxy[i] = xy[i]/d
if d > self.radius:
d = self.radius
d = (d/self.radius)**2
xy = [nxy[0]*d, nxy[1]*d]
w2 = self.width()/2.
h2 = self.height()/2
self.spotPos = QtCore.QPoint(w2*(1+xy[0]), h2*(1-xy[1]))
self.update()
if self.state == xy:
return
self.state = xy
self.sigStateChanged.emit(self, self.state)
def paintEvent(self, ev):
QtGui.QPushButton.paintEvent(self, ev)
p = QtGui.QPainter(self)
p.setBrush(QtGui.QBrush(QtGui.QColor(0,0,0)))
p.drawEllipse(self.spotPos.x()-3,self.spotPos.y()-3,6,6)
def resizeEvent(self, ev):
self.setState(*self.state)
QtGui.QPushButton.resizeEvent(self, ev)
if __name__ == '__main__':
app = QtGui.QApplication([])
w = QtGui.QMainWindow()
b = JoystickButton()
w.setCentralWidget(b)
w.show()
w.resize(100, 100)
def fn(b, s):
print("state changed:", s)
b.sigStateChanged.connect(fn)
## Start Qt event loop unless running in interactive mode.
import sys
if sys.flags.interactive != 1:
app.exec_()
|