enthought - TabularAdapters 的列宽？

Question

使用 Enthought Canopy 的 TraitsUI，我使用 TabularAdapters 来显示一些数组，但它们总是产生均匀比例的列宽......我想让一些宽度比其他宽度小，但还没有找到任何简单的方法......有人有什么建议吗？

Answer 1

控制列宽的get_width()一种方法是覆盖TabularArrayAdapter. 例如，

import numpy as np
from traits.api import HasTraits, Array
from traitsui.api import View, Item, TabularEditor
from traitsui.tabular_adapter import TabularAdapter


test_dtype = np.dtype([('x', 'int'),
                       ('y', 'int'),
                       ('r', 'float')])


class TestArrayAdapter(TabularAdapter):

    columns = [(name, idx) for idx, name in enumerate(test_dtype.names)]

    even_bg_color = 0xF0F4FF

    def get_width(self, object, name, col):
        widths = {0: 50, 1: 50, 2: 150}
        return widths[col]


class Test(HasTraits):

    array1 = Array(dtype=test_dtype)

    view = \
        View(
            Item(name='array1', show_label=False,
                 editor=TabularEditor(adapter=TestArrayAdapter())),
            resizable=True,
        )


a1 = np.array([(10, 20, 1.5), (15, 31, 2.4), (14, 11, 1.9), (21, 13, 2.5)],
              dtype=test_dtype)
test = Test(array1=a1)
test.configure_traits()

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