Ajout du GUI
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thatscringebro
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kivy/uix/behaviors/emacs.py
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140
kivy/uix/behaviors/emacs.py
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# -*- encoding: utf-8 -*-
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'''
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Emacs Behavior
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==============
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The :class:`~kivy.uix.behaviors.emacs.EmacsBehavior`
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`mixin <https://en.wikipedia.org/wiki/Mixin>`_ allows you to add
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`Emacs <https://www.gnu.org/software/emacs/>`_ keyboard shortcuts for basic
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movement and editing to the :class:`~kivy.uix.textinput.TextInput` widget.
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The shortcuts currently available are listed below:
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Emacs shortcuts
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---------------
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=============== ========================================================
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Shortcut Description
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--------------- --------------------------------------------------------
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Control + a Move cursor to the beginning of the line
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Control + e Move cursor to the end of the line
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Control + f Move cursor one character to the right
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Control + b Move cursor one character to the left
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Alt + f Move cursor to the end of the word to the right
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Alt + b Move cursor to the start of the word to the left
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Alt + Backspace Delete text left of the cursor to the beginning of word
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Alt + d Delete text right of the cursor to the end of the word
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Alt + w Copy selection
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Control + w Cut selection
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Control + y Paste selection
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=============== ========================================================
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.. warning::
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If you have the :mod:`~kivy.modules.inspector` module enabled, the
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shortcut for opening the inspector (Control + e) conflicts with the
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Emacs shortcut to move to the end of the line (it will still move the
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cursor to the end of the line, but the inspector will open as well).
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'''
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from kivy.properties import StringProperty
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__all__ = ('EmacsBehavior', )
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class EmacsBehavior(object):
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'''
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A `mixin <https://en.wikipedia.org/wiki/Mixin>`_ that enables Emacs-style
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keyboard shortcuts for the :class:`~kivy.uix.textinput.TextInput` widget.
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Please see the :mod:`Emacs behaviors module <kivy.uix.behaviors.emacs>`
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documentation for more information.
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.. versionadded:: 1.9.1
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'''
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key_bindings = StringProperty('emacs')
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'''String name which determines the type of key bindings to use with the
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:class:`~kivy.uix.textinput.TextInput`. This allows Emacs key bindings to
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be enabled/disabled programmatically for widgets that inherit from
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:class:`EmacsBehavior`. If the value is not ``'emacs'``, Emacs bindings
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will be disabled. Use ``'default'`` for switching to the default key
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bindings of TextInput.
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:attr:`key_bindings` is a :class:`~kivy.properties.StringProperty`
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and defaults to ``'emacs'``.
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.. versionadded:: 1.10.0
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'''
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def __init__(self, **kwargs):
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super(EmacsBehavior, self).__init__(**kwargs)
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self.bindings = {
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'ctrl': {
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'a': lambda: self.do_cursor_movement('cursor_home'),
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'e': lambda: self.do_cursor_movement('cursor_end'),
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'f': lambda: self.do_cursor_movement('cursor_right'),
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'b': lambda: self.do_cursor_movement('cursor_left'),
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'w': lambda: self._cut(self.selection_text),
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'y': self.paste,
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},
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'alt': {
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'w': self.copy,
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'f': lambda: self.do_cursor_movement('cursor_right',
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control=True),
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'b': lambda: self.do_cursor_movement('cursor_left',
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control=True),
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'd': self.delete_word_right,
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'\x08': self.delete_word_left, # alt + backspace
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},
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}
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def keyboard_on_key_down(self, window, keycode, text, modifiers):
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key, key_str = keycode
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# join the modifiers e.g. ['alt', 'ctrl']
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mod = '+'.join(modifiers) if modifiers else None
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is_emacs_shortcut = False
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if key in range(256) and self.key_bindings == 'emacs':
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if mod == 'ctrl' and chr(key) in self.bindings['ctrl'].keys():
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is_emacs_shortcut = True
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elif mod == 'alt' and chr(key) in self.bindings['alt'].keys():
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is_emacs_shortcut = True
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else: # e.g. ctrl+alt or alt+ctrl (alt-gr key)
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is_emacs_shortcut = False
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if is_emacs_shortcut:
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# Look up mod and key
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emacs_shortcut = self.bindings[mod][chr(key)]
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emacs_shortcut()
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else:
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super(EmacsBehavior, self).keyboard_on_key_down(window, keycode,
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text, modifiers)
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def delete_word_right(self):
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'''Delete text right of the cursor to the end of the word'''
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if self._selection:
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return
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start_index = self.cursor_index()
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start_cursor = self.cursor
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self.do_cursor_movement('cursor_right', control=True)
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end_index = self.cursor_index()
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if start_index != end_index:
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s = self.text[start_index:end_index]
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self._set_unredo_delsel(start_index, end_index, s, from_undo=False)
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self.text = self.text[:start_index] + self.text[end_index:]
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self._set_cursor(pos=start_cursor)
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def delete_word_left(self):
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'''Delete text left of the cursor to the beginning of word'''
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if self._selection:
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return
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start_index = self.cursor_index()
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self.do_cursor_movement('cursor_left', control=True)
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end_cursor = self.cursor
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end_index = self.cursor_index()
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if start_index != end_index:
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s = self.text[end_index:start_index]
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self._set_unredo_delsel(end_index, start_index, s, from_undo=False)
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self.text = self.text[:end_index] + self.text[start_index:]
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self._set_cursor(pos=end_cursor)
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