TabularAdapter 编辑器问题
TabularAdapter Editor issue
我遇到了 TraitsUI 包中的 TabularAdapter 问题...
我已经尝试自己解决这个问题太久了，所以我想向这里的专家请教一些友好的建议:)
我将添加一段程序来说明我的问题，我希望有人可以查看它并说“啊哈！......这是你的问题”（我的手指交叉）。
基本上，我可以使用 TabularAdapter 将 table 编辑器生成到 dtype 数组中，它工作正常，除了：
1) 每当我更改元素的数量（标识为 'Number of fractures:'）时，数组都会调整大小，但 table 直到我单击其中一个后才会反映更改元素。我想要发生的是，在我释放 # of fractures 滑块后，# of rows (fractions) 会发生变化。这可行吗？
2) 我遇到的第二个问题是，如果数组在 .configure_traits() 显示之前调整大小（当 Number_of_fractures 被修改时由通知程序显示），我可以缩小大小数组的大小，但我无法将其增加到新大小。
2b) 我想我找到了一种方法让 table 编辑器显示完整的数组，即使它增加到超过代码中的 5 个集合（就在调用 .trait_configure( 之前） )), 但我被愚弄了 :( 我尝试在 vertical_fracture_group 前面添加另一个 Group() 所以 table 不是第一个显示的东西。这更接近地模拟了我的整个程序。当我这样做了，我被锁定在新的较小尺寸的数组中，我无法再将其尺寸增加到最大值 15。我正在修改代码以反映此问题。
这是我的示例代码：
# -*- coding: utf-8 -*-
"""
This is a first shot at developing a ****** User Interface using Canopy by
Enthought. Canopy is a distribution of the Python language which has a lot of
scientific and engineering features 'built-in'.
"""
#-- Imports --------------------------------------------------------------------
from traitsui.api import TabularEditor
from traitsui.tabular_adapter import TabularAdapter
from numpy import zeros, dtype
from traits.api import HasTraits, Range
from traitsui.api import View, Group, Item
#-- FileDialogDemo Class -------------------------------------------------------
max_cracks = 15 #maximum number of Fracs/cracks to allow
class VertFractureAdapter(TabularAdapter):
columns = [('Frac #',0), ('X Cen',1), ('Y Cen',2), ('Z Cen',3),
('Horiz',4), ('Vert',5), ('Angle',6)]
class SetupDialog ( HasTraits ):
Number_Of_Fractures = Range(1, max_cracks) # line 277
vertical_frac_dtype = dtype([('Fracture', 'int'), ('x', 'float'), ('y', 'float'),
('z', 'float'), ('Horiz Length', 'float'), ('Vert Length', 'float')
, ('z-axis Rotation, degrees', 'float')])
vertical_frac_array = zeros((max_cracks), dtype=vertical_frac_dtype)
vertical_fracture_group = Group(
Item(name = 'vertical_frac_array',
show_label = False,
editor = TabularEditor(adapter = VertFractureAdapter()),
width = 0.5,
height = 0.5,
)
)
#-- THIS is the actual 'View' that gets put on the screen
view = View(
#Note: When as this group 'displays' before the one with the Table, I'm 'locked' into my new maximum table display size of 8 (not my original/desired maximum of 15)
Group(
Item( name = 'Number_Of_Fractures'),
),
#Note: If I place this Group() first, my table is free to grow to it's maximum of 15
Group(
Item( name = 'Number_Of_Fractures'),
vertical_fracture_group,
),
width = 0.60,
height = 0.50,
title = '****** Setup',
resizable=True,
)
#-- Traits Event Handlers --------------------------------------------------
def _Number_Of_Fractures_changed(self):
""" Handles resizing arrays if/when the number of Fractures is changed"""
print "I've changed the # of Fractures to " + repr(self.Number_Of_Fractures)
#if not self.user_StartingUp:
self.vertical_frac_array.resize(self.Number_Of_Fractures, refcheck=False)
for crk in range(self.Number_Of_Fractures):
self.vertical_frac_array[crk]['Fracture'] = crk+1
self.vertical_frac_array[crk]['x'] = crk
self.vertical_frac_array[crk]['y'] = crk
self.vertical_frac_array[crk]['z'] = crk
# Run the program (if invoked from the command line):
if __name__ == '__main__':
# Create the dialog:
fileDialog = SetupDialog()
fileDialog.configure_traits()
fileDialog.Number_Of_Fractures = 8
在下面我与 Chris 的讨论中，他提出了一些迄今为止对我没有用的建议 :( 以下是我的 'current' 版本的测试代码，因此 Chris（或任何其他希望发出声音的人） in) 可以看到我是否犯了一些明显的错误。
# -*- coding: utf-8 -*-
"""
This is a first shot at developing a ****** User Interface using Canopy by
Enthought. Canopy is a distribution of the Python language which has a lot of
scientific and engineering features 'built-in'.
"""
#-- Imports --------------------------------------------------------------------
from traitsui.api import TabularEditor
from traitsui.tabular_adapter import TabularAdapter
from numpy import zeros, dtype
from traits.api import HasTraits, Range, Array, List
from traitsui.api import View, Group, Item
#-- FileDialogDemo Class -------------------------------------------------------
max_cracks = 15 #maximum number of Fracs/cracks to allow
class VertFractureAdapter(TabularAdapter):
columns = [('Frac #',0), ('X Cen',1), ('Y Cen',2), ('Z Cen',3),
('Horiz',4), ('Vert',5), ('Angle',6)]
even_bg_color = 0xf4f4f4 # very light gray
class SetupDialog ( HasTraits ):
Number_Of_Fractures = Range(1, max_cracks) # line 277
dummy = Range(1, max_cracks)
vertical_frac_dtype = dtype([('Fracture', 'int'), ('x', 'float'), ('y', 'float'),
('z', 'float'), ('Horiz Length', 'float'), ('Vert Length', 'float')
, ('z-axis Rotation, degrees', 'float')])
vertical_frac_array = Array(dtype=vertical_frac_dtype)
vertical_fracture_group = Group(
Item(name = 'vertical_frac_array',
show_label = False,
editor = TabularEditor(adapter = VertFractureAdapter()),
width = 0.5,
height = 0.5,
)
)
#-- THIS is the actual 'View' that gets put on the screen
view = View(
Group(
Item( name = 'dummy'),
),
Group(
Item( name = 'Number_Of_Fractures'),
vertical_fracture_group,
),
width = 0.60,
height = 0.50,
title = '****** Setup',
resizable=True,
)
#-- Traits Event Handlers --------------------------------------------------
def _Number_Of_Fractures_changed(self, old, new):
""" Handles resizing arrays if/when the number of Fractures is changed"""
print "I've changed the # of Fractures to " + repr(self.Number_Of_Fractures)
vfa = self.vertical_frac_array
vfa.resize(self.Number_Of_Fractures, refcheck=False)
for crk in range(self.Number_Of_Fractures):
vfa[crk]['Fracture'] = crk+1
vfa[crk]['x'] = crk
vfa[crk]['y'] = crk
vfa[crk]['z'] = crk
self.vertical_frac_array = vfa
# Run the program (if invoked from the command line):
if __name__ == '__main__':
# Create the dialog:
fileDialog = SetupDialog()
# put the actual dialog up...if I put it up 'first' and then resize the array, I seem to get my full range back :)
fileDialog.configure_traits()
#fileDialog.Number_Of_Fractures = 8
有两个代码细节导致您描述的问题。首先，vertical_frac_array 不是特征，因此表格编辑器无法监视它的变化。因此，table 仅在您手动与之交互时刷新。其次，traits 不监视数组内容的变化，而是监视数组的标识。因此，将不会检测到调整大小和将值分配到数组中。
解决此问题的一种方法是首先创建 vertical_frac_array 和 Array 特征。例如。 vertical_frac_array = Array(dtype=vertical_frac_dtype)。然后，在 _Number_Of_Fractures_changed 中，不要 resize vertical_frac_array 并就地修改它。相反，复制 vertical_frac_array、调整大小、修改内容，然后将操纵的副本重新分配回 vertical_frac_array。这样 table 将看到数组的标识已更改并刷新视图。
另一种选择是将 vertical_frac_array 设为 List 而不是 Array。这避免了上面的复制和重新分配技巧，因为特征确实监视列表的内容。
编辑
我的解决方案如下。我没有在 Number_Of_Fractures 更改时调整 vertical_frac_array 的大小，而是重新创建数组。我还通过 _vertical_frac_array_default 方法为 vertical_frac_array 提供了默认值。 （我也从视图中删除了不必要的代码。）
# -*- coding: utf-8 -*-
"""
This is a first shot at developing a ****** User Interface using Canopy by
Enthought. Canopy is a distribution of the Python language which has a lot of
scientific and engineering features 'built-in'.
"""
#-- Imports --------------------------------------------------------------------
from traitsui.api import TabularEditor
from traitsui.tabular_adapter import TabularAdapter
from numpy import dtype, zeros
from traits.api import HasTraits, Range, Array
from traitsui.api import View, Item
#-- FileDialogDemo Class -------------------------------------------------------
max_cracks = 15 #maximum number of Fracs/cracks to allow
vertical_frac_dtype = dtype([('Fracture', 'int'), ('x', 'float'), ('y', 'float'),
('z', 'float'), ('Horiz Length', 'float'), ('Vert Length', 'float')
, ('z-axis Rotation, degrees', 'float')])
class VertFractureAdapter(TabularAdapter):
columns = [('Frac #',0), ('X Cen',1), ('Y Cen',2), ('Z Cen',3),
('Horiz',4), ('Vert',5), ('Angle',6)]
class SetupDialog ( HasTraits ):
Number_Of_Fractures = Range(1, max_cracks) # line 277
vertical_frac_array = Array(dtype=vertical_frac_dtype)
view = View(
Item('Number_Of_Fractures'),
Item(
'vertical_frac_array',
show_label=False,
editor=TabularEditor(
adapter=VertFractureAdapter(),
),
width=0.5,
height=0.5,
),
width=0.60,
height=0.50,
title='****** Setup',
resizable=True,
)
#-- Traits Defaults -------------------------------------------------------
def _vertical_frac_array_default(self):
""" Creates the default value of the `vertical_frac_array`. """
return self._calculate_frac_array()
#-- Traits Event Handlers -------------------------------------------------
def _Number_Of_Fractures_changed(self):
""" Update `vertical_frac_array` when `Number_Of_Fractures` changes """
print "I've changed the # of Fractures to " + repr(self.Number_Of_Fractures)
#if not self.user_StartingUp:
self.vertical_frac_array = self._calculate_frac_array()
#-- Private Interface -----------------------------------------------------
def _calculate_frac_array(self):
arr = zeros(self.Number_Of_Fractures, dtype=vertical_frac_dtype)
for crk in range(self.Number_Of_Fractures):
arr[crk]['Fracture'] = crk+1
arr[crk]['x'] = crk
arr[crk]['y'] = crk
arr[crk]['z'] = crk
return arr
# Run the program (if invoked from the command line):
if __name__ == '__main__':
# Create the dialog:
fileDialog = SetupDialog()
fileDialog.configure_traits()
我遇到了 TraitsUI 包中的 TabularAdapter 问题...
我已经尝试自己解决这个问题太久了，所以我想向这里的专家请教一些友好的建议:)
我将添加一段程序来说明我的问题，我希望有人可以查看它并说“啊哈！......这是你的问题”（我的手指交叉）。
基本上，我可以使用 TabularAdapter 将 table 编辑器生成到 dtype 数组中，它工作正常，除了：
1) 每当我更改元素的数量（标识为 'Number of fractures:'）时，数组都会调整大小，但 table 直到我单击其中一个后才会反映更改元素。我想要发生的是，在我释放 # of fractures 滑块后，# of rows (fractions) 会发生变化。这可行吗？
2) 我遇到的第二个问题是，如果数组在 .configure_traits() 显示之前调整大小（当 Number_of_fractures 被修改时由通知程序显示），我可以缩小大小数组的大小，但我无法将其增加到新大小。
2b) 我想我找到了一种方法让 table 编辑器显示完整的数组，即使它增加到超过代码中的 5 个集合（就在调用 .trait_configure( 之前） )), 但我被愚弄了 :( 我尝试在 vertical_fracture_group 前面添加另一个 Group() 所以 table 不是第一个显示的东西。这更接近地模拟了我的整个程序。当我这样做了，我被锁定在新的较小尺寸的数组中，我无法再将其尺寸增加到最大值 15。我正在修改代码以反映此问题。
这是我的示例代码：
# -*- coding: utf-8 -*-
"""
This is a first shot at developing a ****** User Interface using Canopy by
Enthought. Canopy is a distribution of the Python language which has a lot of
scientific and engineering features 'built-in'.
"""
#-- Imports --------------------------------------------------------------------
from traitsui.api import TabularEditor
from traitsui.tabular_adapter import TabularAdapter
from numpy import zeros, dtype
from traits.api import HasTraits, Range
from traitsui.api import View, Group, Item
#-- FileDialogDemo Class -------------------------------------------------------
max_cracks = 15 #maximum number of Fracs/cracks to allow
class VertFractureAdapter(TabularAdapter):
columns = [('Frac #',0), ('X Cen',1), ('Y Cen',2), ('Z Cen',3),
('Horiz',4), ('Vert',5), ('Angle',6)]
class SetupDialog ( HasTraits ):
Number_Of_Fractures = Range(1, max_cracks) # line 277
vertical_frac_dtype = dtype([('Fracture', 'int'), ('x', 'float'), ('y', 'float'),
('z', 'float'), ('Horiz Length', 'float'), ('Vert Length', 'float')
, ('z-axis Rotation, degrees', 'float')])
vertical_frac_array = zeros((max_cracks), dtype=vertical_frac_dtype)
vertical_fracture_group = Group(
Item(name = 'vertical_frac_array',
show_label = False,
editor = TabularEditor(adapter = VertFractureAdapter()),
width = 0.5,
height = 0.5,
)
)
#-- THIS is the actual 'View' that gets put on the screen
view = View(
#Note: When as this group 'displays' before the one with the Table, I'm 'locked' into my new maximum table display size of 8 (not my original/desired maximum of 15)
Group(
Item( name = 'Number_Of_Fractures'),
),
#Note: If I place this Group() first, my table is free to grow to it's maximum of 15
Group(
Item( name = 'Number_Of_Fractures'),
vertical_fracture_group,
),
width = 0.60,
height = 0.50,
title = '****** Setup',
resizable=True,
)
#-- Traits Event Handlers --------------------------------------------------
def _Number_Of_Fractures_changed(self):
""" Handles resizing arrays if/when the number of Fractures is changed"""
print "I've changed the # of Fractures to " + repr(self.Number_Of_Fractures)
#if not self.user_StartingUp:
self.vertical_frac_array.resize(self.Number_Of_Fractures, refcheck=False)
for crk in range(self.Number_Of_Fractures):
self.vertical_frac_array[crk]['Fracture'] = crk+1
self.vertical_frac_array[crk]['x'] = crk
self.vertical_frac_array[crk]['y'] = crk
self.vertical_frac_array[crk]['z'] = crk
# Run the program (if invoked from the command line):
if __name__ == '__main__':
# Create the dialog:
fileDialog = SetupDialog()
fileDialog.configure_traits()
fileDialog.Number_Of_Fractures = 8
在下面我与 Chris 的讨论中，他提出了一些迄今为止对我没有用的建议 :( 以下是我的 'current' 版本的测试代码，因此 Chris（或任何其他希望发出声音的人） in) 可以看到我是否犯了一些明显的错误。
# -*- coding: utf-8 -*-
"""
This is a first shot at developing a ****** User Interface using Canopy by
Enthought. Canopy is a distribution of the Python language which has a lot of
scientific and engineering features 'built-in'.
"""
#-- Imports --------------------------------------------------------------------
from traitsui.api import TabularEditor
from traitsui.tabular_adapter import TabularAdapter
from numpy import zeros, dtype
from traits.api import HasTraits, Range, Array, List
from traitsui.api import View, Group, Item
#-- FileDialogDemo Class -------------------------------------------------------
max_cracks = 15 #maximum number of Fracs/cracks to allow
class VertFractureAdapter(TabularAdapter):
columns = [('Frac #',0), ('X Cen',1), ('Y Cen',2), ('Z Cen',3),
('Horiz',4), ('Vert',5), ('Angle',6)]
even_bg_color = 0xf4f4f4 # very light gray
class SetupDialog ( HasTraits ):
Number_Of_Fractures = Range(1, max_cracks) # line 277
dummy = Range(1, max_cracks)
vertical_frac_dtype = dtype([('Fracture', 'int'), ('x', 'float'), ('y', 'float'),
('z', 'float'), ('Horiz Length', 'float'), ('Vert Length', 'float')
, ('z-axis Rotation, degrees', 'float')])
vertical_frac_array = Array(dtype=vertical_frac_dtype)
vertical_fracture_group = Group(
Item(name = 'vertical_frac_array',
show_label = False,
editor = TabularEditor(adapter = VertFractureAdapter()),
width = 0.5,
height = 0.5,
)
)
#-- THIS is the actual 'View' that gets put on the screen
view = View(
Group(
Item( name = 'dummy'),
),
Group(
Item( name = 'Number_Of_Fractures'),
vertical_fracture_group,
),
width = 0.60,
height = 0.50,
title = '****** Setup',
resizable=True,
)
#-- Traits Event Handlers --------------------------------------------------
def _Number_Of_Fractures_changed(self, old, new):
""" Handles resizing arrays if/when the number of Fractures is changed"""
print "I've changed the # of Fractures to " + repr(self.Number_Of_Fractures)
vfa = self.vertical_frac_array
vfa.resize(self.Number_Of_Fractures, refcheck=False)
for crk in range(self.Number_Of_Fractures):
vfa[crk]['Fracture'] = crk+1
vfa[crk]['x'] = crk
vfa[crk]['y'] = crk
vfa[crk]['z'] = crk
self.vertical_frac_array = vfa
# Run the program (if invoked from the command line):
if __name__ == '__main__':
# Create the dialog:
fileDialog = SetupDialog()
# put the actual dialog up...if I put it up 'first' and then resize the array, I seem to get my full range back :)
fileDialog.configure_traits()
#fileDialog.Number_Of_Fractures = 8
有两个代码细节导致您描述的问题。首先，vertical_frac_array 不是特征，因此表格编辑器无法监视它的变化。因此，table 仅在您手动与之交互时刷新。其次，traits 不监视数组内容的变化，而是监视数组的标识。因此，将不会检测到调整大小和将值分配到数组中。
解决此问题的一种方法是首先创建 vertical_frac_array 和 Array 特征。例如。 vertical_frac_array = Array(dtype=vertical_frac_dtype)。然后，在 _Number_Of_Fractures_changed 中，不要 resize vertical_frac_array 并就地修改它。相反，复制 vertical_frac_array、调整大小、修改内容，然后将操纵的副本重新分配回 vertical_frac_array。这样 table 将看到数组的标识已更改并刷新视图。
另一种选择是将 vertical_frac_array 设为 List 而不是 Array。这避免了上面的复制和重新分配技巧，因为特征确实监视列表的内容。
编辑
我的解决方案如下。我没有在 Number_Of_Fractures 更改时调整 vertical_frac_array 的大小，而是重新创建数组。我还通过 _vertical_frac_array_default 方法为 vertical_frac_array 提供了默认值。 （我也从视图中删除了不必要的代码。）
# -*- coding: utf-8 -*-
"""
This is a first shot at developing a ****** User Interface using Canopy by
Enthought. Canopy is a distribution of the Python language which has a lot of
scientific and engineering features 'built-in'.
"""
#-- Imports --------------------------------------------------------------------
from traitsui.api import TabularEditor
from traitsui.tabular_adapter import TabularAdapter
from numpy import dtype, zeros
from traits.api import HasTraits, Range, Array
from traitsui.api import View, Item
#-- FileDialogDemo Class -------------------------------------------------------
max_cracks = 15 #maximum number of Fracs/cracks to allow
vertical_frac_dtype = dtype([('Fracture', 'int'), ('x', 'float'), ('y', 'float'),
('z', 'float'), ('Horiz Length', 'float'), ('Vert Length', 'float')
, ('z-axis Rotation, degrees', 'float')])
class VertFractureAdapter(TabularAdapter):
columns = [('Frac #',0), ('X Cen',1), ('Y Cen',2), ('Z Cen',3),
('Horiz',4), ('Vert',5), ('Angle',6)]
class SetupDialog ( HasTraits ):
Number_Of_Fractures = Range(1, max_cracks) # line 277
vertical_frac_array = Array(dtype=vertical_frac_dtype)
view = View(
Item('Number_Of_Fractures'),
Item(
'vertical_frac_array',
show_label=False,
editor=TabularEditor(
adapter=VertFractureAdapter(),
),
width=0.5,
height=0.5,
),
width=0.60,
height=0.50,
title='****** Setup',
resizable=True,
)
#-- Traits Defaults -------------------------------------------------------
def _vertical_frac_array_default(self):
""" Creates the default value of the `vertical_frac_array`. """
return self._calculate_frac_array()
#-- Traits Event Handlers -------------------------------------------------
def _Number_Of_Fractures_changed(self):
""" Update `vertical_frac_array` when `Number_Of_Fractures` changes """
print "I've changed the # of Fractures to " + repr(self.Number_Of_Fractures)
#if not self.user_StartingUp:
self.vertical_frac_array = self._calculate_frac_array()
#-- Private Interface -----------------------------------------------------
def _calculate_frac_array(self):
arr = zeros(self.Number_Of_Fractures, dtype=vertical_frac_dtype)
for crk in range(self.Number_Of_Fractures):
arr[crk]['Fracture'] = crk+1
arr[crk]['x'] = crk
arr[crk]['y'] = crk
arr[crk]['z'] = crk
return arr
# Run the program (if invoked from the command line):
if __name__ == '__main__':
# Create the dialog:
fileDialog = SetupDialog()
fileDialog.configure_traits()