Kivy:TextInput selection_text问题

时间:2018-01-21 15:33:46

标签: python kivy restructuredtext textinput

以下是从here复制的简单rst编辑器的代码,在此代码中,selection_text被所需的标签包围,但这是一个问题我只能从左到右选择文本,当从右边选择文本时离开它不像以前那样工作,是否有可能从其他方面选择其他文本编辑器?

from kivy.app import App
from kivy.base import Builder
from kivy.uix.button import Button
from kivy.uix.boxlayout import BoxLayout



Builder.load_string("""
<root_wgt>:
    orientation: 'vertical'
    BoxLayout:
        size_hint_y:0.2
        Button:
            text: 'Emphasize'
            on_press: root.emphasize()
        Button:
            text: 'Section Header'
            on_press: root.add_section_header()
        Button:
            text: 'Subection Header'
            on_press: root.add_sub_section_header()

    BoxLayout:
        orientation: 'vertical'
        TextInput:
            id: textinput

        RstDocument:
            id: rstdocument
            text: textinput.text
""")


class root_wgt(BoxLayout):
    def emphasize(self):
        text = self.ids.textinput.text
        selection = self.ids.textinput.selection_text
        begin = self.ids.textinput.selection_from
        end = self.ids.textinput.selection_to
        new_text = text[:begin] + ' **' + selection + '** ' + text[end:]
        self.ids.textinput.text = new_text
        self.ids.rstdocument.render()

    def add_section_header(self):
        self.ids.textinput.insert_text("""\n==============""")

    def add_sub_section_header(self):
        self.ids.textinput.insert_text("""\n-----------------""")

class MyApp(App):
    def build(self):
        return root_wgt()

if __name__ == '__main__':
    MyApp().run()

1 个答案:

答案 0 :(得分:0)

问题是由于当您从右向左选择时selection_to大于selection_from所以数据提取会导致重复元素导致这种不当行为,解决方法是{{1} }和begin正确排序,我们使用sorted:

end