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# (C) Copyright 2004-2023 Enthought, Inc., Austin, TX
# All rights reserved.
#
# This software is provided without warranty under the terms of the BSD
# license included in LICENSE.txt and may be redistributed only under
# the conditions described in the aforementioned license. The license
# is also available online at http://www.enthought.com/licenses/BSD.txt
#
# Thanks for using Enthought open source!
import wx
from traits.api import Float, Any, Str, Union
from traitsui.editors.api import RangeEditor
from traitsui.wx.editor import Editor
from traitsui.wx.helper import TraitsUIPanel, Slider
class _BoundsEditor(Editor):
evaluate = Any()
min = Any()
max = Any()
low = Any()
high = Any()
format = Str()
def init(self, parent):
"""Finishes initializing the editor by creating the underlying toolkit
widget.
"""
factory = self.factory
if not factory.low_name:
self.low = factory.low
self.min = self.low
if not factory.high_name:
self.high = factory.high
self.max = self.high
self.max = factory.max
self.min = factory.min
self.format_str = factory.format
self.evaluate = factory.evaluate
self.sync_value(factory.evaluate_name, "evaluate", "from")
self.sync_value(factory.low_name, "low", "both")
self.sync_value(factory.high_name, "high", "both")
self.control = panel = TraitsUIPanel(parent, -1)
sizer = wx.FlexGridSizer(2, 3, 0, 0)
# low text box
self._label_lo = wx.TextCtrl(
panel,
-1,
self.format_str % self.low,
size=wx.Size(56, 20),
style=wx.TE_PROCESS_ENTER,
)
sizer.Add(self._label_lo, 0, wx.ALIGN_CENTER)
self._label_lo.Bind(wx.EVT_TEXT_ENTER, self.update_low_on_enter)
self._label_lo.Bind(wx.EVT_KILL_FOCUS, self.update_low_on_enter)
# low slider
self.control.lslider = Slider(
panel,
-1,
0,
0,
10000,
size=wx.Size(100, 20),
style=wx.SL_HORIZONTAL | wx.SL_AUTOTICKS,
)
self.control.lslider.SetValue(self._convert_to_slider(self.low))
self.control.lslider.SetTickFreq(1000, 1)
self.control.lslider.SetPageSize(1000)
self.control.lslider.SetLineSize(100)
self.control.lslider.Bind(wx.EVT_SCROLL, self.update_object_on_scroll)
sizer.Add(self.control.lslider, 1, wx.EXPAND)
sizer.AddStretchSpacer(0)
# high slider
sizer.AddStretchSpacer(0)
self.control.rslider = Slider(
panel,
-1,
self._convert_to_slider(self.high),
0,
10000,
size=wx.Size(100, 20),
style=wx.SL_HORIZONTAL | wx.SL_AUTOTICKS,
)
self.control.rslider.SetTickFreq(1000, 1)
self.control.rslider.SetPageSize(1000)
self.control.rslider.SetLineSize(100)
self.control.rslider.Bind(wx.EVT_SCROLL, self.update_object_on_scroll)
sizer.Add(self.control.rslider, 1, wx.EXPAND)
# high text box
self._label_hi = wx.TextCtrl(
panel,
-1,
self.format_str % self.high,
size=wx.Size(56, 20),
style=wx.TE_PROCESS_ENTER,
)
sizer.Add(self._label_hi, 0, wx.ALIGN_CENTER)
self._label_hi.Bind(wx.EVT_TEXT_ENTER, self.update_high_on_enter)
self._label_hi.Bind(wx.EVT_KILL_FOCUS, self.update_high_on_enter)
self.set_tooltip(self.control.lslider)
self.set_tooltip(self.control.rslider)
self.set_tooltip(self._label_lo)
self.set_tooltip(self._label_hi)
# Set-up the layout:
panel.SetSizerAndFit(sizer)
def dispose(self):
self._label_hi.Unbind(wx.EVT_TEXT_ENTER)
self._label_hi.Unbind(wx.EVT_KILL_FOCUS)
self._label_lo.Unbind(wx.EVT_TEXT_ENTER)
self._label_lo.Unbind(wx.EVT_KILL_FOCUS)
def update_low_on_enter(self, event):
if isinstance(event, wx.FocusEvent):
event.Skip()
try:
try:
low = eval(str(self._label_lo.GetValue()).strip())
if self.evaluate is not None:
low = self.evaluate(low)
except Exception as ex:
low = self.low
self._label_lo.SetValue(self.format_str % self.low)
if not self.factory.is_float:
low = int(low)
if low > self.high:
low = self.high - self._step_size()
self._label_lo.SetValue(self.format_str % low)
self.control.lslider.SetValue(self._convert_to_slider(low))
self.low = low
except:
pass
def update_high_on_enter(self, event):
if isinstance(event, wx.FocusEvent):
event.Skip()
try:
try:
high = eval(str(self._label_hi.GetValue()).strip())
if self.evaluate is not None:
high = self.evaluate(high)
except:
high = self.high
self._label_hi.SetValue(self.format_str % self.high)
if not self.factory.is_float:
high = int(high)
if high < self.low:
high = self.low + self._step_size()
self._label_hi.SetValue(self.format_str % high)
self.control.rslider.SetValue(self._convert_to_slider(high))
self.high = high
except:
pass
def update_object_on_scroll(self, evt):
low = self._convert_from_slider(self.control.lslider.GetValue())
high = self._convert_from_slider(self.control.rslider.GetValue())
if low >= high:
if evt.Position == self.control.lslider.GetValue():
low = self.high - self._step_size()
else:
high = self.low + self._step_size()
if self.factory.is_float:
self.low = low
self.high = high
else:
self.low = int(low)
self.high = int(high)
# update the sliders to the int values or the sliders
# will jiggle
self.control.lslider.SetValue(self._convert_to_slider(low))
self.control.rslider.SetValue(self._convert_to_slider(high))
def update_editor(self):
return
def _check_max_and_min(self):
# check if max & min have been defined:
if self.max is None:
self.max = self.high
if self.min is None:
self.min = self.low
def _step_size(self):
slider_delta = (
self.control.lslider.GetMax() - self.control.lslider.GetMin()
)
range_delta = self.max - self.min
return float(range_delta) / slider_delta
def _convert_from_slider(self, slider_val):
self._check_max_and_min()
return self.min + slider_val * self._step_size()
def _convert_to_slider(self, value):
self._check_max_and_min()
return (
self.control.lslider.GetMin()
+ (value - self.min) / self._step_size()
)
def _low_changed(self, low):
if self.control is None:
return
if self._label_lo is not None:
self._label_lo.SetValue(self.format_str % low)
self.control.lslider.SetValue(self._convert_to_slider(low))
def _high_changed(self, high):
if self.control is None:
return
if self._label_hi is not None:
self._label_hi.SetValue(self.format_str % high)
self.control.rslider.SetValue(self._convert_to_slider(self.high))
class BoundsEditor(RangeEditor):
min = Union(None, Float)
max = Union(None, Float)
def _get_simple_editor_class(self):
return _BoundsEditor
def _get_custom_editor_class(self):
return _BoundsEditor
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