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# (C) Copyright 2005-2023 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 provides
from pyface.i_layout_item import DEFAULT_SIZE
from pyface.i_layout_widget import ILayoutWidget, MLayoutWidget
from pyface.ui.wx.widget import Widget
#: The special "default" size for Wx Size objects.
WX_DEFAULT_SIZE = -1
@provides(ILayoutWidget)
class LayoutWidget(MLayoutWidget, Widget):
""" A widget which can participate as part of a layout.
This is an abstract class, as Widget._create_control needs to be
implemented at a minimum.
"""
def _set_control_minimum_size(self, size):
""" Set the minimum size of the control. """
wx_size = _size_to_wx_size(size)
self.control.SetMinSize(wx_size)
def _get_control_minimum_size(self):
""" Get the minimum size of the control. """
wx_size = self.control.GetMinSize()
return _wx_size_to_size(wx_size)
def _set_control_maximum_size(self, size):
""" Set the maximum size of the control. """
wx_size = _size_to_wx_size(size)
self.control.SetMaxSize(wx_size)
def _get_control_maximum_size(self):
""" Get the maximum size of the control. """
wx_size = self.control.GetMaxSize()
return _wx_size_to_size(wx_size)
def _set_control_stretch(self, size_policy):
""" Set the stretch factor of the control.
In Wx the stretch factor is set at layout time and can't be changed
without removing and adding the widget back into a layout.
"""
pass
def _get_control_stretch(self):
""" Get the stretch factor of the control.
In Wx the stretch factor is set at layout time and can't be obtained
from the widget itself. As a result, this method simply returns the
current trait value. This method is only used for testing.
"""
return self.stretch
def _set_control_size_policy(self, size_policy):
""" Set the size policy of the control
In Wx the size policy is set at layout time and can't be changed
without removing and adding the widget back into a layout.
"""
pass
def _get_control_size_policy(self):
""" Get the size policy of the control
In Wx the size policy is set at layout time and can't be obtained from
the widget itself. As a result, this method simply returns the
current trait value. This method is only used for testing.
"""
return self.size_policy
def _size_to_wx_size(size):
""" Convert a size tuple to a wx.Size instance.
Parameters
----------
size : tuple of (width, height)
The width and height as a tuple of ints.
Returns
-------
wx_size : wx.Size
A corresponding wx Size instance.
"""
return wx.Size(*(
x if x != DEFAULT_SIZE else WX_DEFAULT_SIZE
for x in size
))
def _wx_size_to_size(wx_size):
""" Convert a wx.Size instance to a size tuple.
Parameters
----------
wx_size : wx.Size
A wx Size instance.
Returns
-------
size : tuple of (width, height)
The corresponding width and height as a tuple of ints.
"""
return (wx_size.GetWidth(), wx_size.GetHeight())
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