Mercurial > libervia-desktop-kivy
annotate cagou/core/widgets_handler.py @ 170:f4522b7c3318
widgets handler: use widget's top and right
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Sun, 29 Apr 2018 12:23:52 +0200 |
| parents | ef09dce878c7 |
| children | 27b4ceb977c7 |
| rev | line source |
|---|---|
| 13 | 1 #!/usr/bin/python |
| 2 # -*- coding: utf-8 -*- | |
| 3 | |
| 4 # Cagou: desktop/mobile frontend for Salut à Toi XMPP client | |
| 126 | 5 # Copyright (C) 2016-2018 Jérôme Poisson (goffi@goffi.org) |
| 13 | 6 |
| 7 # This program is free software: you can redistribute it and/or modify | |
| 8 # it under the terms of the GNU Affero General Public License as published by | |
| 9 # the Free Software Foundation, either version 3 of the License, or | |
| 10 # (at your option) any later version. | |
| 11 | |
| 12 # This program is distributed in the hope that it will be useful, | |
| 13 # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 # GNU Affero General Public License for more details. | |
| 16 | |
| 17 # You should have received a copy of the GNU Affero General Public License | |
| 18 # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 | |
| 20 | |
| 21 from sat.core import log as logging | |
| 22 log = logging.getLogger(__name__) | |
| 154 | 23 from sat.core import exceptions |
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24 from sat_frontends.quick_frontend import quick_widgets |
| 154 | 25 from kivy.graphics import Color, Ellipse |
| 26 from kivy.uix.layout import Layout | |
| 13 | 27 from kivy.uix.boxlayout import BoxLayout |
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28 from kivy.uix.stencilview import StencilView |
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29 from kivy.metrics import dp |
| 13 | 30 from kivy import properties |
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31 from cagou import G |
| 13 | 32 |
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33 |
| 154 | 34 REMOVE_WID_LIMIT = dp(10) |
| 35 MIN_WIDTH = MIN_HEIGHT = dp(50) | |
| 13 | 36 |
| 37 | |
| 154 | 38 class WHWrapper(BoxLayout): |
| 39 carousel = properties.ObjectProperty(None) | |
| 40 split_size = properties.NumericProperty(dp(1)) | |
| 41 split_margin = properties.NumericProperty(dp(2)) | |
| 42 split_color = properties.ListProperty([0.8, 0.8, 0.8, 1]) | |
| 43 split_color_move = properties.ListProperty([0.0, 0.8, 0.8, 1]) | |
| 44 split_color_del = properties.ListProperty([0.8, 0.0, 0.0, 1]) | |
| 45 # sp stands for "split point" | |
| 46 sp_size = properties.NumericProperty(dp(1)) | |
| 47 sp_space = properties.NumericProperty(dp(4)) | |
| 48 sp_zone = properties.NumericProperty(dp(30)) | |
| 49 _split = properties.OptionProperty('None', options=['None', 'left', 'top']) | |
| 50 _split_del = properties.BooleanProperty(False) | |
| 51 | |
| 52 def __init__(self, **kwargs): | |
| 53 idx = kwargs.pop('_wid_idx') | |
| 54 self._wid_idx = idx | |
| 55 super(WHWrapper, self).__init__(**kwargs) | |
| 56 self._former_slide = None | |
| 57 self.carousel.bind(current_slide=self.onSlideChange) | |
| 58 self._slides_update_lock = False | |
| 59 self._left_wids = set() | |
| 60 self._top_wids = set() | |
| 61 self._right_wids = set() | |
| 62 self._bottom_wids = set() | |
| 63 | |
| 64 def __repr__(self): | |
| 65 return "WHWrapper_{idx}".format(idx=self._wid_idx) | |
| 66 | |
| 67 def _main_wid(self, wid_list): | |
| 68 """return main widget of a side list | |
| 69 | |
| 70 main widget is either the widget currently splitter | |
| 71 or any widget if none is split | |
| 72 @return (WHWrapper, None): main widget or None | |
| 73 if there is not widget | |
| 74 """ | |
| 75 if not wid_list: | |
| 76 return None | |
| 77 for wid in wid_list: | |
| 78 if wid._split != 'None': | |
| 79 return wid | |
| 80 return next(iter(wid_list)) | |
| 81 | |
| 82 @property | |
| 83 def _left_wid(self): | |
| 84 return self._main_wid(self._left_wids) | |
| 85 | |
| 86 @property | |
| 87 def _top_wid(self): | |
| 88 return self._main_wid(self._top_wids) | |
| 89 | |
| 90 @property | |
| 91 def _right_wid(self): | |
| 92 return self._main_wid(self._right_wids) | |
| 93 | |
| 94 @property | |
| 95 def _bottom_wid(self): | |
| 96 return self._main_wid(self._bottom_wids) | |
| 13 | 97 |
| 154 | 98 @property |
| 99 def current_slide(self): | |
| 100 return self.carousel.current_slide | |
| 101 | |
| 102 def _draw_ellipse(self): | |
| 103 """draw split ellipse""" | |
| 104 color = self.split_color_del if self._split_del else self.split_color_move | |
| 105 try: | |
| 106 self.canvas.after.remove(self.ellipse) | |
| 107 except AttributeError: | |
| 108 pass | |
| 109 if self._split == "top": | |
| 110 with self.canvas.after: | |
| 111 Color(*color) | |
| 112 self.ellipse = Ellipse(angle_start=90, angle_end=270, | |
| 113 pos=(self.x + self.width/2 - self.sp_zone/2, | |
| 114 self.y + self.height - self.sp_zone/2), | |
| 115 size=(self.sp_zone, self.sp_zone)) | |
| 116 elif self._split == "left": | |
| 117 with self.canvas.after: | |
| 118 Color(*color) | |
| 119 self.ellipse = Ellipse(angle_end=180, | |
| 120 pos=(self.x + -self.sp_zone/2, | |
| 121 self.y + self.height/2 - self.sp_zone/2), | |
| 122 size = (self.sp_zone, self.sp_zone)) | |
| 123 else: | |
| 124 raise exceptions.InternalError('unexpected split value') | |
| 13 | 125 |
| 154 | 126 def on_touch_down(self, touch): |
| 127 """activate split if touch is on a split zone""" | |
| 128 if not self.collide_point(*touch.pos): | |
| 129 return | |
| 130 log.debug("WIDGET IDX: {} (left: {}, top: {}, right: {}, bottom: {}), pos: {}, size: {}".format( | |
| 131 self._wid_idx, | |
| 132 'None' if not self._left_wids else [w._wid_idx for w in self._left_wids], | |
| 133 'None' if not self._top_wids else [w._wid_idx for w in self._top_wids], | |
| 134 'None' if not self._right_wids else [w._wid_idx for w in self._right_wids], | |
| 135 'None' if not self._bottom_wids else [w._wid_idx for w in self._bottom_wids], | |
| 136 self.pos, | |
| 137 self.size, | |
| 138 )) | |
| 139 touch_rx, touch_ry = self.to_widget(*touch.pos, relative=True) | |
| 140 if (touch_ry <= self.height and | |
| 141 touch_ry >= self.height - self.split_size - self.split_margin or | |
| 142 touch_ry <= self.height and | |
| 143 touch_ry >= self.height - self.sp_zone and | |
| 144 touch_rx >= self.width/2 - self.sp_zone/2 and | |
| 145 touch_rx <= self.width/2 + self.sp_zone/2): | |
| 146 # split area is touched, we activate top split mode | |
| 147 self._split = "top" | |
| 148 self._draw_ellipse() | |
| 149 elif (touch_rx >= 0 and | |
| 150 touch_rx <= self.split_size + self.split_margin or | |
| 151 touch_rx >= 0 and | |
| 152 touch_rx <= self.sp_zone and | |
| 153 touch_ry >= self.height/2 - self.sp_zone/2 and | |
| 154 touch_ry <= self.height/2 + self.sp_zone/2): | |
| 155 # split area is touched, we activate left split mode | |
| 156 self._split = "left" | |
| 157 touch.ud['ori_width'] = self.width | |
| 158 self._draw_ellipse() | |
| 13 | 159 else: |
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160 if len(self.carousel.slides) == 1: |
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161 # we don't want swipe if there is only one slide |
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162 return StencilView.on_touch_down(self.carousel, touch) |
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163 else: |
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164 return super(WHWrapper, self).on_touch_down(touch) |
| 13 | 165 |
| 166 def on_touch_move(self, touch): | |
| 154 | 167 """handle size change and widget creation on split""" |
| 168 if self._split == 'None': | |
| 169 return super(WHWrapper, self).on_touch_move(touch) | |
| 170 | |
| 171 elif self._split == 'top': | |
| 172 new_height = touch.y - self.y | |
| 173 | |
| 174 if new_height < MIN_HEIGHT: | |
| 175 return | |
| 176 | |
| 177 # we must not pass the top widget/border | |
| 178 if self._top_wids: | |
| 179 top = next(iter(self._top_wids)) | |
| 180 y_limit = top.y + top.height | |
| 181 | |
| 182 if top.height <= REMOVE_WID_LIMIT: | |
| 183 # we are in remove zone, we add visual hint for that | |
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184 if not self._split_del and self._top_wids: |
| 154 | 185 self._split_del = True |
| 186 self._draw_ellipse() | |
| 187 else: | |
| 188 if self._split_del: | |
| 189 self._split_del = False | |
| 190 self._draw_ellipse() | |
| 191 else: | |
| 192 y_limit = self.y + self.height | |
| 193 | |
| 194 if touch.y >= y_limit: | |
| 195 return | |
| 196 | |
| 197 # all right, we can change size | |
| 198 self.height = new_height | |
| 199 self.ellipse.pos = (self.ellipse.pos[0], touch.y - self.sp_zone/2) | |
| 200 | |
| 201 if not self._top_wids: | |
| 202 # we are the last widget on the top | |
| 203 # so we create a new widget | |
| 204 new_wid = self.parent.add_widget() | |
| 205 self._top_wids.add(new_wid) | |
| 206 new_wid._bottom_wids.add(self) | |
| 207 for w in self._right_wids: | |
| 208 new_wid._right_wids.add(w) | |
| 209 w._left_wids.add(new_wid) | |
| 210 for w in self._left_wids: | |
| 211 new_wid._left_wids.add(w) | |
| 212 w._right_wids.add(new_wid) | |
| 13 | 213 |
| 154 | 214 elif self._split == 'left': |
| 215 ori_width = touch.ud['ori_width'] | |
| 216 new_x = touch.x | |
| 217 new_width = ori_width - (touch.x - touch.ox) | |
| 218 | |
| 219 if new_width < MIN_WIDTH: | |
| 220 return | |
| 221 | |
| 222 # we must not pass the left widget/border | |
| 223 if self._left_wids: | |
| 224 left = next(iter(self._left_wids)) | |
| 225 x_limit = left.x | |
| 226 | |
| 227 if left.width <= REMOVE_WID_LIMIT: | |
| 228 # we are in remove zone, we add visual hint for that | |
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229 if not self._split_del and self._left_wids: |
| 154 | 230 self._split_del = True |
| 231 self._draw_ellipse() | |
| 232 else: | |
| 233 if self._split_del: | |
| 234 self._split_del = False | |
| 235 self._draw_ellipse() | |
| 236 else: | |
| 237 x_limit = self.x | |
| 238 | |
| 239 if new_x <= x_limit: | |
| 240 return | |
| 241 | |
| 242 # all right, we can change position/size | |
| 243 self.x = new_x | |
| 244 self.width = new_width | |
| 245 self.ellipse.pos = (touch.x - self.sp_zone/2, self.ellipse.pos[1]) | |
| 246 | |
| 247 if not self._left_wids: | |
| 248 # we are the last widget on the left | |
| 249 # so we create a new widget | |
| 250 new_wid = self.parent.add_widget() | |
| 251 self._left_wids.add(new_wid) | |
| 252 new_wid._right_wids.add(self) | |
| 253 for w in self._top_wids: | |
| 254 new_wid._top_wids.add(w) | |
| 255 w._bottom_wids.add(new_wid) | |
| 256 for w in self._bottom_wids: | |
| 257 new_wid._bottom_wids.add(w) | |
| 258 w._top_wids.add(new_wid) | |
| 259 | |
| 260 else: | |
| 261 raise Exception.InternalError('invalid _split value') | |
| 13 | 262 |
| 263 def on_touch_up(self, touch): | |
| 154 | 264 if self._split == 'None': |
| 265 return super(WHWrapper, self).on_touch_up(touch) | |
| 266 if self._split == 'top': | |
| 267 # we remove all top widgets in delete zone, | |
| 268 # and update there side widgets list | |
| 269 for top in self._top_wids.copy(): | |
| 270 if top.height <= REMOVE_WID_LIMIT: | |
| 271 for w in top._top_wids: | |
| 272 w._bottom_wids.remove(top) | |
| 273 w._bottom_wids.update(top._bottom_wids) | |
| 274 for w in top._bottom_wids: | |
| 275 w._top_wids.remove(top) | |
| 276 w._top_wids.update(top._top_wids) | |
| 277 for w in top._left_wids: | |
| 278 w._right_wids.remove(top) | |
| 279 for w in top._right_wids: | |
| 280 w._left_wids.remove(top) | |
| 281 self.parent.remove_widget(top) | |
| 282 elif self._split == 'left': | |
| 283 # we remove all left widgets in delete zone, | |
| 284 # and update there side widgets list | |
| 285 for left in self._left_wids.copy(): | |
| 286 if left.width <= REMOVE_WID_LIMIT: | |
| 287 for w in left._left_wids: | |
| 288 w._right_wids.remove(left) | |
| 289 w._right_wids.update(left._right_wids) | |
| 290 for w in left._right_wids: | |
| 291 w._left_wids.remove(left) | |
| 292 w._left_wids.update(left._left_wids) | |
| 293 for w in left._top_wids: | |
| 294 w._bottom_wids.remove(left) | |
| 295 for w in left._bottom_wids: | |
| 296 w._top_wids.remove(left) | |
| 297 self.parent.remove_widget(left) | |
| 298 self._split = 'None' | |
| 299 self.canvas.after.remove(self.ellipse) | |
| 300 del self.ellipse | |
| 13 | 301 |
| 154 | 302 def set_widget(self, wid, index=0): |
| 303 self.carousel.add_widget(wid, index) | |
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304 |
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305 def changeWidget(self, new_widget): |
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306 """Change currently displayed widget |
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307 |
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308 slides widgets will be updated |
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309 """ |
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310 # slides update need to be blocked to avoid the update in onSlideChange |
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311 # which would mess the removal of current widgets |
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312 self._slides_update_lock = True |
| 154 | 313 current = self.carousel.current_slide |
| 314 for w in self.carousel.slides: | |
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315 if w == current or w == new_widget: |
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316 continue |
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317 if isinstance(w, quick_widgets.QuickWidget): |
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318 G.host.widgets.deleteWidget(w) |
| 154 | 319 self.carousel.clear_widgets() |
| 320 self.carousel.add_widget(new_widget) | |
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321 self._slides_update_lock = False |
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322 self.updateHiddenSlides() |
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323 |
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324 def onSlideChange(self, handler, new_slide): |
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325 if isinstance(self._former_slide, quick_widgets.QuickWidget): |
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326 G.host.removeVisibleWidget(self._former_slide) |
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327 self._former_slide = new_slide |
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328 if isinstance(new_slide, quick_widgets.QuickWidget): |
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329 G.host.addVisibleWidget(new_slide) |
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330 self.updateHiddenSlides() |
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331 |
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332 def hiddenList(self, visible_list): |
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333 """return widgets of same class as holded one which are hidden |
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334 |
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335 @param visible_list(list[QuickWidget]): widgets visible |
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336 @return (iter[QuickWidget]): widgets hidden |
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337 """ |
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338 added = [(w.targets, w.profiles) for w in visible_list] # we want to avoid recreated widgets |
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339 for w in G.host.widgets.getWidgets(self.current_slide.__class__, profiles=self.current_slide.profiles): |
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340 if w in visible_list or (w.targets, w.profiles) in added: |
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341 continue |
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342 yield w |
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343 |
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344 def widgets_sort(self, widget): |
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345 """method used as key to sort the widgets |
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346 |
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347 order of the widgets when changing slide is affected |
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348 @param widget(QuickWidget): widget to sort |
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349 @return: a value which will be used for sorting |
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350 """ |
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351 try: |
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352 return unicode(widget.target).lower() |
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353 except AttributeError: |
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354 return unicode(list(widget.targets)[0]).lower() |
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355 |
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356 def updateHiddenSlides(self): |
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357 """adjust carousel slides according to visible widgets""" |
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358 if self._slides_update_lock: |
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359 return |
| 154 | 360 if not isinstance(self.carousel.current_slide, quick_widgets.QuickWidget): |
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361 return |
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362 # lock must be used here to avoid recursions |
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363 self._slides_update_lock = True |
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364 visible_list = G.host.getVisibleList(self.current_slide.__class__) |
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365 hidden = list(self.hiddenList(visible_list)) |
| 154 | 366 slides_sorted = sorted(hidden + [self.carousel.current_slide], key=self.widgets_sort) |
| 367 to_remove = set(self.carousel.slides).difference({self.carousel.current_slide}) | |
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368 for w in to_remove: |
| 154 | 369 self.carousel.remove_widget(w) |
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370 if hidden: |
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371 # no need to add more than two widgets (next and previous), |
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372 # as the list will be updated on each new visible widget |
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373 current_idx = slides_sorted.index(self.current_slide) |
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374 try: |
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375 next_slide = slides_sorted[current_idx+1] |
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376 except IndexError: |
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377 next_slide = slides_sorted[0] |
| 154 | 378 self.carousel.add_widget(G.host.getOrClone(next_slide)) |
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379 if len(hidden)>1: |
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380 previous_slide = slides_sorted[current_idx-1] |
| 154 | 381 self.carousel.add_widget(G.host.getOrClone(previous_slide)) |
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382 |
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383 self._slides_update_lock = False |
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384 |
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385 |
| 154 | 386 class WidgetsHandlerLayout(Layout): |
| 387 count = 0 | |
| 13 | 388 |
| 154 | 389 def __init__(self, **kwargs): |
| 390 super(WidgetsHandlerLayout, self).__init__(**kwargs) | |
| 391 fbind = self.fbind | |
| 392 update = self._trigger_layout | |
| 393 fbind('children', update) | |
| 394 fbind('parent', update) | |
| 395 fbind('size', update) | |
| 396 fbind('pos', update) | |
| 13 | 397 |
| 14 | 398 @property |
| 399 def default_widget(self): | |
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400 return G.host.default_wid['factory'](G.host.default_wid, None, None) |
| 14 | 401 |
| 154 | 402 def do_layout(self, *args): |
| 403 for child in self.children: | |
| 404 # XXX: left must be calculated before right and bottom before top | |
| 405 # because they are the pos, and are used to caculate size (right and top) | |
| 406 # left | |
| 407 left = child._left_wid | |
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408 left_end_x = self.x-1 if left is None else left.right |
| 154 | 409 if child.x != left_end_x + 1 and child._split == "None": |
| 410 child.x = left_end_x + 1 | |
| 411 # right | |
| 412 right = child._right_wid | |
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413 right_x = self.right + 1 if right is None else right.x |
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414 if child.right != right_x - 1: |
| 154 | 415 child.width = right_x - child.x - 1 |
| 416 # bottom | |
| 417 bottom = child._bottom_wid | |
| 418 if bottom is None: | |
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419 if child.y != self.y: |
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420 child.y = self.y |
| 154 | 421 else: |
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422 if child.y != bottom.top + 1: |
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423 child.y = bottom.top + 1 |
| 154 | 424 # top |
| 425 top = child._top_wid | |
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426 top_y = self.top+1 if top is None else top.y |
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427 if child.top != top_y - 1: |
| 154 | 428 if child._split == "None": |
| 429 child.height = top_y - child.y - 1 | |
| 430 | |
| 431 def remove_widget(self, wid): | |
| 432 super(WidgetsHandlerLayout, self).remove_widget(wid) | |
| 433 log.debug("widget deleted ({})".format(wid._wid_idx)) | |
| 434 | |
| 435 def add_widget(self, wid=None, index=0): | |
| 436 WidgetsHandlerLayout.count += 1 | |
| 437 if wid is None: | |
| 438 wid = self.default_widget | |
| 439 wrapper = WHWrapper(_wid_idx=WidgetsHandlerLayout.count) | |
| 440 log.debug("WHWrapper created ({})".format(wrapper._wid_idx)) | |
| 441 wrapper.set_widget(wid) | |
| 442 super(WidgetsHandlerLayout, self).add_widget(wrapper, index) | |
| 443 return wrapper | |
| 444 | |
| 445 | |
| 446 class WidgetsHandler(WidgetsHandlerLayout): | |
| 447 | |
| 448 def __init__(self, **kw): | |
| 449 super(WidgetsHandler, self).__init__(**kw) | |
| 450 self.wrapper = self.add_widget() | |
| 451 | |
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452 @property |
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453 def cagou_widget(self): |
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454 """get holded CagouWidget""" |
| 154 | 455 return self.wrapper.current_slide |