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annotate cagou/core/utils.py @ 269:a5dfc789eeaf

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widgets_handler: increased remove limit and min height/width: remove limit was too small on touch screen, making it difficult to close a widget
author Goffi <goffi@goffi.org>
date Wed, 20 Mar 2019 09:29:44 +0100
parents 112ba3295f8f
children 1b835bcfa663
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rev   line source
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1 #!/usr//bin/env python2
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2 # -*- coding: utf-8 -*-
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3
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4 # Cagou: desktop/mobile frontend for Salut à Toi XMPP client
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5 # Copyright (C) 2016-2018 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 """misc utils/behaviors"""
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21
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22
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23 from kivy.animation import Animation
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24
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25
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26 class FilterBehavior(object):
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27 """class to handle items filtering with animation"""
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28
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29 def __init__(self, *args, **kwargs):
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30 super(FilterBehavior, self).__init__(*args, **kwargs)
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31 self._filter_last = u''
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32 self._filter_anim = Animation(width = 0,
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33 height = 0,
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34 opacity = 0,
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35 d = 0.5)
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36
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37 def do_filter(self, children, text, get_child_text, width_cb, height_cb,
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38 continue_tests=None):
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39 """filter the children
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40
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41 filtered children will have a animation to set width, height and opacity to 0
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42 @param children(kivy.uix.widget.Widget): widgets to filter
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43 @param text(unicode): filter text (if this text is not present in a child,
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44 the child is filtered out)
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45 @param get_child_text(callable): must retrieve child text
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46 child is used as sole argument
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47 @param width_cb(callable, int, None): method to retrieve width when opened
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48 child is used as sole argument, int can be used instead of callable
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49 @param height_cb(callable, int, None): method to retrieve height when opened
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50 child is used as sole argument, int can be used instead of callable
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51 @param continue_tests(list[callable]): list of test to skip the item
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52 all callables take child as sole argument.
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53 if any of the callable return True, the child is skipped (i.e. not filtered)
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54 """
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55 text = text.strip().lower()
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56 filtering = len(text)>len(self._filter_last)
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57 self._filter_last = text
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58 for child in self.layout.children:
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59 if continue_tests is not None and any((t(child) for t in continue_tests)):
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60 continue
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61 if text in get_child_text(child).lower():
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62 self._filter_anim.cancel(child)
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63 for key, method in (('width', width_cb),
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64 ('height', height_cb),
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65 ('opacity', lambda c: 1)):
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66 try:
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67 setattr(child, key, method(child))
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68 except TypeError:
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69 # method is not a callable, must be an int
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70 setattr(child, key, method)
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71 elif (filtering
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72 and child.opacity > 0
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73 and not self._filter_anim.have_properties_to_animate(child)):
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74 self._filter_anim.start(child)