pyqtgraph/console/CmdInput.py

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2012-06-22 01:52:34 +00:00
from pyqtgraph.Qt import QtCore, QtGui
class CmdInput(QtGui.QLineEdit):
sigExecuteCmd = QtCore.Signal(object)
def __init__(self, parent):
QtGui.QLineEdit.__init__(self, parent)
self.history = [""]
self.ptr = 0
#self.lastCmd = None
#self.setMultiline(False)
def keyPressEvent(self, ev):
#print "press:", ev.key(), QtCore.Qt.Key_Up, QtCore.Qt.Key_Down, QtCore.Qt.Key_Enter
if ev.key() == QtCore.Qt.Key_Up and self.ptr < len(self.history) - 1:
self.setHistory(self.ptr+1)
ev.accept()
return
elif ev.key() == QtCore.Qt.Key_Down and self.ptr > 0:
self.setHistory(self.ptr-1)
ev.accept()
return
elif ev.key() == QtCore.Qt.Key_Return:
self.execCmd()
else:
QtGui.QLineEdit.keyPressEvent(self, ev)
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self.history[0] = asUnicode(self.text())
def execCmd(self):
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cmd = asUnicode(self.text())
if len(self.history) == 1 or cmd != self.history[1]:
self.history.insert(1, cmd)
#self.lastCmd = cmd
self.history[0] = ""
self.setHistory(0)
self.sigExecuteCmd.emit(cmd)
def setHistory(self, num):
self.ptr = num
self.setText(self.history[self.ptr])
#def setMultiline(self, m):
#height = QtGui.QFontMetrics(self.font()).lineSpacing()
#if m:
#self.setFixedHeight(height*5)
#else:
#self.setFixedHeight(height+15)
#self.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
#self.setHorizontalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOff)
#def sizeHint(self):
#hint = QtGui.QPlainTextEdit.sizeHint(self)
#height = QtGui.QFontMetrics(self.font()).lineSpacing()
#hint.setHeight(height)
#return hint