inv_spinctrl.py
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# --------------------------------------------------------------------------
# Software: InVesalius - Software de Reconstrucao 3D de Imagens Medicas
# Copyright: (C) 2001 Centro de Pesquisas Renato Archer
# Homepage: http://www.softwarepublico.gov.br
# Contact: invesalius@cti.gov.br
# License: GNU - GPL 2 (LICENSE.txt/LICENCA.txt)
# --------------------------------------------------------------------------
# Este programa e software livre; voce pode redistribui-lo e/ou
# modifica-lo sob os termos da Licenca Publica Geral GNU, conforme
# publicada pela Free Software Foundation; de acordo com a versao 2
# da Licenca.
#
# Este programa eh distribuido na expectativa de ser util, mas SEM
# QUALQUER GARANTIA; sem mesmo a garantia implicita de
# COMERCIALIZACAO ou de ADEQUACAO A QUALQUER PROPOSITO EM
# PARTICULAR. Consulte a Licenca Publica Geral GNU para obter mais
# detalhes.
# --------------------------------------------------------------------------
import decimal
import wx
class InvSpinCtrl(wx.Panel):
def __init__(
self,
parent,
id=wx.ID_ANY,
value=0,
min_value=1,
max_value=100,
increment=1,
spin_button=True,
size=wx.DefaultSize,
style=wx.TE_RIGHT,
):
super().__init__(parent, id, size=size)
self._textctrl = wx.TextCtrl(self, -1, style=style)
if spin_button and wx.Platform != "__WXGTK__":
self._spinbtn = wx.SpinButton(self, -1)
else:
self._spinbtn = None
self._value = 0
self._last_value = 0
self._min_value = 0
self._max_value = 100
self._increment = 1
self.SetMin(min_value)
self.SetMax(max_value)
self.SetValue(value)
self.SetIncrement(increment)
sizer = wx.BoxSizer(wx.HORIZONTAL)
sizer.Add(self._textctrl, 1, wx.EXPAND)
if self._spinbtn:
sizer.Add(self._spinbtn, 0, wx.EXPAND)
self.SetSizer(sizer)
sizer.Fit(self)
self.__bind_events()
def __bind_events(self):
self.Bind(wx.EVT_MOUSEWHEEL, self.OnMouseWheel)
self._textctrl.Bind(wx.EVT_KILL_FOCUS, self.OnKillFocus)
if self._spinbtn:
self._spinbtn.Bind(wx.EVT_SPIN_UP, self.OnSpinUp)
self._spinbtn.Bind(wx.EVT_SPIN_DOWN, self.OnSpinDown)
def SetIncrement(self, increment):
self._increment = increment
def SetMin(self, min_value):
self._min_value = min_value
self.SetValue(self._value)
self.CalcSizeFromTextSize()
def SetMax(self, max_value):
self._max_value = max_value
self.SetValue(self._value)
self.CalcSizeFromTextSize()
def SetRange(self, min_value, max_value):
self.SetMin(min_value)
self.SetMax(max_value)
def GetValue(self):
return self._value
def SetValue(self, value):
try:
value = int(value)
except ValueError:
value = self._last_value
if value < self._min_value:
value = self._min_value
if value > self._max_value:
value = self._max_value
self._value = value
self._textctrl.SetValue("{}".format(self._value))
self._last_value = self._value
def CalcSizeFromTextSize(self, text=None):
# To calculate best width to spinctrl
if text is None:
text = "{}".format(
max(len(str(self._max_value)), len(str(self._min_value)), 5) * "M"
)
dc = wx.WindowDC(self)
dc.SetFont(self.GetFont())
width, height = dc.GetTextExtent(text)
if self._spinbtn:
spin = wx.SpinCtrl(self, -1)
spin_width, spin_height = spin.GetBestSize()
spin.Destroy()
spinb = wx.SpinButton(self, -1)
spinb_width, spinb_height = spinb.GetBestSize()
spinb.Destroy()
width += spinb_width
if wx.Platform == "__WXMAC":
height = max(height, spin_height, spinb_height)
else:
height = spin_height
else:
height = -1
self.SetMinSize((width, height))
self.Layout()
def OnMouseWheel(self, evt):
r = evt.GetWheelRotation()
if r > 0:
self.SetValue(self.GetValue() + self._increment)
else:
self.SetValue(self.GetValue() - self._increment)
self.raise_event()
evt.Skip()
def OnKillFocus(self, evt):
value = self._textctrl.GetValue()
self.SetValue(value)
self.raise_event()
evt.Skip()
def OnSpinDown(self, evt):
self.SetValue(self.GetValue() - self._increment)
self.raise_event()
evt.Skip()
def OnSpinUp(self, evt):
self.SetValue(self.GetValue() + self._increment)
self.raise_event()
evt.Skip()
def raise_event(self):
event = wx.PyCommandEvent(wx.EVT_SPINCTRL.typeId, self.GetId())
self.GetEventHandler().ProcessEvent(event)
class InvFloatSpinCtrl(wx.Panel):
def __init__(
self,
parent,
id=wx.ID_ANY,
value=0.0,
min_value=1.0,
max_value=100.0,
increment=0.1,
digits=1,
spin_button=True,
size=wx.DefaultSize,
style=wx.TE_RIGHT,
):
super().__init__(parent, id, size=size)
self._textctrl = wx.TextCtrl(self, -1, style=style)
if spin_button and wx.Platform != "__WXGTK__":
self._spinbtn = wx.SpinButton(self, -1)
else:
self._spinbtn = None
self._digits = digits
self._dec_context = decimal.Context(prec=digits)
self._value = decimal.Decimal("0", self._dec_context)
self._last_value = self._value
self._min_value = decimal.Decimal("0", self._dec_context)
self._max_value = decimal.Decimal("100", self._dec_context)
self._increment = decimal.Decimal("0.1", self._dec_context)
self.SetIncrement(increment)
self.SetMin(min_value)
self.SetMax(max_value)
self.SetValue(value)
sizer = wx.BoxSizer(wx.HORIZONTAL)
sizer.Add(self._textctrl, 1, wx.EXPAND)
if self._spinbtn:
sizer.Add(self._spinbtn, 0, wx.EXPAND)
self.SetSizer(sizer)
sizer.Fit(self)
self.__bind_events()
def __bind_events(self):
self.Bind(wx.EVT_MOUSEWHEEL, self.OnMouseWheel)
self._textctrl.Bind(wx.EVT_KILL_FOCUS, self.OnKillFocus)
if self._spinbtn:
self._spinbtn.Bind(wx.EVT_SPIN_UP, self.OnSpinUp)
self._spinbtn.Bind(wx.EVT_SPIN_DOWN, self.OnSpinDown)
def _to_decimal(self, value):
if not isinstance(value, str):
value = "{:.{digits}f}".format(value, digits=self._digits)
return decimal.Decimal(value, self._dec_context)
def SetDigits(self, digits):
self._digits = digits
self._dec_context = decimal.Context(prec=digits)
self.SetIncrement(self._increment)
self.SetMin(self._min_value)
self.SetMax(self._max_value)
self.SetValue(self._value)
def SetIncrement(self, increment):
self._increment = self._to_decimal(increment)
def SetMin(self, min_value):
self._min_value = self._to_decimal(min_value)
self.SetValue(self._value)
def SetMax(self, max_value):
self._max_value = self._to_decimal(max_value)
self.SetValue(self._value)
def SetRange(self, min_value, max_value):
self.SetMin(min_value)
self.SetMax(max_value)
def GetValue(self):
return float(self._value)
def SetValue(self, value):
try:
value = self._to_decimal(value)
except decimal.InvalidOperation:
value = self._last_value
if value < self._min_value:
value = self._min_value
if value > self._max_value:
value = self._max_value
self._value = value
self._textctrl.SetValue("{}".format(self._value))
self._last_value = self._value
def CalcSizeFromTextSize(self, text=None):
# To calculate best width to spinctrl
if text is None:
text = "{}".format(
max(len(str(self._max_value)), len(str(self._min_value))) * "M"
)
dc = wx.WindowDC(self)
dc.SetFont(self.GetFont())
width, height = dc.GetTextExtent(text)
spin = wx.SpinCtrl(self, -1)
spin_width, spin_height = spin.GetBestSize()
spin.Destroy()
if self._spinbtn:
spin = wx.SpinCtrl(self, -1)
spin_width, spin_height = spin.GetBestSize()
spin.Destroy()
spinb = wx.SpinButton(self, -1)
spinb_width, spinb_height = spinb.GetBestSize()
spinb.Destroy()
width += spinb_width
if wx.Platform == "__WXMAC":
height = max(height, spin_height, spinb_height)
else:
height = spin_height
else:
height = -1
self.SetMinSize((width, height))
self.Layout()
def OnMouseWheel(self, evt):
r = evt.GetWheelRotation()
if r > 0:
self.SetValue(self._value + self._increment)
else:
self.SetValue(self._value - self._increment)
self.raise_event()
evt.Skip()
def OnKillFocus(self, evt):
value = self._textctrl.GetValue()
self.SetValue(value)
self.raise_event()
evt.Skip()
def OnSpinDown(self, evt):
self.SetValue(self._value - self._increment)
self.raise_event()
evt.Skip()
def OnSpinUp(self, evt):
self.SetValue(self._value + self._increment)
self.raise_event()
evt.Skip()
def raise_event(self):
event = wx.PyCommandEvent(wx.EVT_SPINCTRL.typeId, self.GetId())
self.GetEventHandler().ProcessEvent(event)