Mercurial > libervia-desktop-kivy
annotate cagou/core/widgets_handler.py @ 282:1b835bcfa663
date update
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Mon, 25 Mar 2019 07:11:09 +0100 |
| parents | 23d4358803c7 |
| children | efd3fbc85aaf |
| rev | line source |
|---|---|
| 13 | 1 #!/usr/bin/python |
| 2 # -*- coding: utf-8 -*- | |
| 3 | |
| 4 # Cagou: desktop/mobile frontend for Salut à Toi XMPP client | |
| 282 | 5 # Copyright (C) 2016-2019 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 |
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32 from cagou.core.constants import Const as C |
| 13 | 33 |
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34 |
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35 REMOVE_WID_LIMIT = dp(50) |
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36 MIN_WIDTH = MIN_HEIGHT = dp(70) |
| 13 | 37 |
| 38 | |
| 154 | 39 class WHWrapper(BoxLayout): |
| 40 carousel = properties.ObjectProperty(None) | |
| 41 split_size = properties.NumericProperty(dp(1)) | |
| 42 split_margin = properties.NumericProperty(dp(2)) | |
| 43 split_color = properties.ListProperty([0.8, 0.8, 0.8, 1]) | |
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44 split_color_move = C.COLOR_SEC_DARK |
| 154 | 45 split_color_del = properties.ListProperty([0.8, 0.0, 0.0, 1]) |
| 46 # sp stands for "split point" | |
| 47 sp_size = properties.NumericProperty(dp(1)) | |
| 48 sp_space = properties.NumericProperty(dp(4)) | |
| 49 sp_zone = properties.NumericProperty(dp(30)) | |
| 50 _split = properties.OptionProperty('None', options=['None', 'left', 'top']) | |
| 51 _split_del = properties.BooleanProperty(False) | |
| 52 | |
| 53 def __init__(self, **kwargs): | |
| 54 idx = kwargs.pop('_wid_idx') | |
| 55 self._wid_idx = idx | |
| 56 super(WHWrapper, self).__init__(**kwargs) | |
| 57 self._former_slide = None | |
| 58 self.carousel.bind(current_slide=self.onSlideChange) | |
| 59 self._slides_update_lock = False | |
| 60 self._left_wids = set() | |
| 61 self._top_wids = set() | |
| 62 self._right_wids = set() | |
| 63 self._bottom_wids = set() | |
| 64 | |
| 65 def __repr__(self): | |
| 66 return "WHWrapper_{idx}".format(idx=self._wid_idx) | |
| 67 | |
| 68 def _main_wid(self, wid_list): | |
| 69 """return main widget of a side list | |
| 70 | |
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71 main widget is either the widget currently splitted |
| 154 | 72 or any widget if none is split |
| 73 @return (WHWrapper, None): main widget or None | |
| 74 if there is not widget | |
| 75 """ | |
| 76 if not wid_list: | |
| 77 return None | |
| 78 for wid in wid_list: | |
| 79 if wid._split != 'None': | |
| 80 return wid | |
| 81 return next(iter(wid_list)) | |
| 82 | |
| 83 @property | |
| 84 def _left_wid(self): | |
| 85 return self._main_wid(self._left_wids) | |
| 86 | |
| 87 @property | |
| 88 def _top_wid(self): | |
| 89 return self._main_wid(self._top_wids) | |
| 90 | |
| 91 @property | |
| 92 def _right_wid(self): | |
| 93 return self._main_wid(self._right_wids) | |
| 94 | |
| 95 @property | |
| 96 def _bottom_wid(self): | |
| 97 return self._main_wid(self._bottom_wids) | |
| 13 | 98 |
| 154 | 99 @property |
| 100 def current_slide(self): | |
| 101 return self.carousel.current_slide | |
| 102 | |
| 103 def _draw_ellipse(self): | |
| 104 """draw split ellipse""" | |
| 105 color = self.split_color_del if self._split_del else self.split_color_move | |
| 106 try: | |
| 107 self.canvas.after.remove(self.ellipse) | |
| 108 except AttributeError: | |
| 109 pass | |
| 110 if self._split == "top": | |
| 111 with self.canvas.after: | |
| 112 Color(*color) | |
| 113 self.ellipse = Ellipse(angle_start=90, angle_end=270, | |
| 114 pos=(self.x + self.width/2 - self.sp_zone/2, | |
| 115 self.y + self.height - self.sp_zone/2), | |
| 116 size=(self.sp_zone, self.sp_zone)) | |
| 117 elif self._split == "left": | |
| 118 with self.canvas.after: | |
| 119 Color(*color) | |
| 120 self.ellipse = Ellipse(angle_end=180, | |
| 121 pos=(self.x + -self.sp_zone/2, | |
| 122 self.y + self.height/2 - self.sp_zone/2), | |
| 123 size = (self.sp_zone, self.sp_zone)) | |
| 124 else: | |
| 125 raise exceptions.InternalError('unexpected split value') | |
| 13 | 126 |
| 154 | 127 def on_touch_down(self, touch): |
| 128 """activate split if touch is on a split zone""" | |
| 129 if not self.collide_point(*touch.pos): | |
| 130 return | |
| 131 log.debug("WIDGET IDX: {} (left: {}, top: {}, right: {}, bottom: {}), pos: {}, size: {}".format( | |
| 132 self._wid_idx, | |
| 133 'None' if not self._left_wids else [w._wid_idx for w in self._left_wids], | |
| 134 'None' if not self._top_wids else [w._wid_idx for w in self._top_wids], | |
| 135 'None' if not self._right_wids else [w._wid_idx for w in self._right_wids], | |
| 136 'None' if not self._bottom_wids else [w._wid_idx for w in self._bottom_wids], | |
| 137 self.pos, | |
| 138 self.size, | |
| 139 )) | |
| 140 touch_rx, touch_ry = self.to_widget(*touch.pos, relative=True) | |
| 141 if (touch_ry <= self.height and | |
| 142 touch_ry >= self.height - self.split_size - self.split_margin or | |
| 143 touch_ry <= self.height and | |
| 144 touch_ry >= self.height - self.sp_zone and | |
| 145 touch_rx >= self.width/2 - self.sp_zone/2 and | |
| 146 touch_rx <= self.width/2 + self.sp_zone/2): | |
| 147 # split area is touched, we activate top split mode | |
| 148 self._split = "top" | |
| 149 self._draw_ellipse() | |
| 150 elif (touch_rx >= 0 and | |
| 151 touch_rx <= self.split_size + self.split_margin or | |
| 152 touch_rx >= 0 and | |
| 153 touch_rx <= self.sp_zone and | |
| 154 touch_ry >= self.height/2 - self.sp_zone/2 and | |
| 155 touch_ry <= self.height/2 + self.sp_zone/2): | |
| 156 # split area is touched, we activate left split mode | |
| 157 self._split = "left" | |
| 158 touch.ud['ori_width'] = self.width | |
| 159 self._draw_ellipse() | |
| 13 | 160 else: |
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161 if len(self.carousel.slides) == 1: |
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162 # we don't want swipe if there is only one slide |
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163 return StencilView.on_touch_down(self.carousel, touch) |
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164 else: |
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165 return super(WHWrapper, self).on_touch_down(touch) |
| 13 | 166 |
| 167 def on_touch_move(self, touch): | |
| 154 | 168 """handle size change and widget creation on split""" |
| 169 if self._split == 'None': | |
| 170 return super(WHWrapper, self).on_touch_move(touch) | |
| 171 | |
| 172 elif self._split == 'top': | |
| 173 new_height = touch.y - self.y | |
| 174 | |
| 175 if new_height < MIN_HEIGHT: | |
| 176 return | |
| 177 | |
| 178 # we must not pass the top widget/border | |
| 179 if self._top_wids: | |
| 180 top = next(iter(self._top_wids)) | |
| 181 y_limit = top.y + top.height | |
| 182 | |
| 183 if top.height <= REMOVE_WID_LIMIT: | |
| 184 # we are in remove zone, we add visual hint for that | |
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185 if not self._split_del and self._top_wids: |
| 154 | 186 self._split_del = True |
| 187 self._draw_ellipse() | |
| 188 else: | |
| 189 if self._split_del: | |
| 190 self._split_del = False | |
| 191 self._draw_ellipse() | |
| 192 else: | |
| 193 y_limit = self.y + self.height | |
| 194 | |
| 195 if touch.y >= y_limit: | |
| 196 return | |
| 197 | |
| 198 # all right, we can change size | |
| 199 self.height = new_height | |
| 200 self.ellipse.pos = (self.ellipse.pos[0], touch.y - self.sp_zone/2) | |
| 201 | |
| 202 if not self._top_wids: | |
| 203 # we are the last widget on the top | |
| 204 # so we create a new widget | |
| 205 new_wid = self.parent.add_widget() | |
| 206 self._top_wids.add(new_wid) | |
| 207 new_wid._bottom_wids.add(self) | |
| 208 for w in self._right_wids: | |
| 209 new_wid._right_wids.add(w) | |
| 210 w._left_wids.add(new_wid) | |
| 211 for w in self._left_wids: | |
| 212 new_wid._left_wids.add(w) | |
| 213 w._right_wids.add(new_wid) | |
| 13 | 214 |
| 154 | 215 elif self._split == 'left': |
| 216 ori_width = touch.ud['ori_width'] | |
| 217 new_x = touch.x | |
| 218 new_width = ori_width - (touch.x - touch.ox) | |
| 219 | |
| 220 if new_width < MIN_WIDTH: | |
| 221 return | |
| 222 | |
| 223 # we must not pass the left widget/border | |
| 224 if self._left_wids: | |
| 225 left = next(iter(self._left_wids)) | |
| 226 x_limit = left.x | |
| 227 | |
| 228 if left.width <= REMOVE_WID_LIMIT: | |
| 229 # we are in remove zone, we add visual hint for that | |
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230 if not self._split_del and self._left_wids: |
| 154 | 231 self._split_del = True |
| 232 self._draw_ellipse() | |
| 233 else: | |
| 234 if self._split_del: | |
| 235 self._split_del = False | |
| 236 self._draw_ellipse() | |
| 237 else: | |
| 238 x_limit = self.x | |
| 239 | |
| 240 if new_x <= x_limit: | |
| 241 return | |
| 242 | |
| 243 # all right, we can change position/size | |
| 244 self.x = new_x | |
| 245 self.width = new_width | |
| 246 self.ellipse.pos = (touch.x - self.sp_zone/2, self.ellipse.pos[1]) | |
| 247 | |
| 248 if not self._left_wids: | |
| 249 # we are the last widget on the left | |
| 250 # so we create a new widget | |
| 251 new_wid = self.parent.add_widget() | |
| 252 self._left_wids.add(new_wid) | |
| 253 new_wid._right_wids.add(self) | |
| 254 for w in self._top_wids: | |
| 255 new_wid._top_wids.add(w) | |
| 256 w._bottom_wids.add(new_wid) | |
| 257 for w in self._bottom_wids: | |
| 258 new_wid._bottom_wids.add(w) | |
| 259 w._top_wids.add(new_wid) | |
| 260 | |
| 261 else: | |
| 262 raise Exception.InternalError('invalid _split value') | |
| 13 | 263 |
| 264 def on_touch_up(self, touch): | |
| 154 | 265 if self._split == 'None': |
| 266 return super(WHWrapper, self).on_touch_up(touch) | |
| 267 if self._split == 'top': | |
| 268 # we remove all top widgets in delete zone, | |
| 269 # and update there side widgets list | |
| 270 for top in self._top_wids.copy(): | |
| 271 if top.height <= REMOVE_WID_LIMIT: | |
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272 G.host._removeVisibleWidget(top.current_slide) |
| 154 | 273 for w in top._top_wids: |
| 274 w._bottom_wids.remove(top) | |
| 275 w._bottom_wids.update(top._bottom_wids) | |
| 276 for w in top._bottom_wids: | |
| 277 w._top_wids.remove(top) | |
| 278 w._top_wids.update(top._top_wids) | |
| 279 for w in top._left_wids: | |
| 280 w._right_wids.remove(top) | |
| 281 for w in top._right_wids: | |
| 282 w._left_wids.remove(top) | |
| 283 self.parent.remove_widget(top) | |
| 284 elif self._split == 'left': | |
| 285 # we remove all left widgets in delete zone, | |
| 286 # and update there side widgets list | |
| 287 for left in self._left_wids.copy(): | |
| 288 if left.width <= REMOVE_WID_LIMIT: | |
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289 G.host._removeVisibleWidget(left.current_slide) |
| 154 | 290 for w in left._left_wids: |
| 291 w._right_wids.remove(left) | |
| 292 w._right_wids.update(left._right_wids) | |
| 293 for w in left._right_wids: | |
| 294 w._left_wids.remove(left) | |
| 295 w._left_wids.update(left._left_wids) | |
| 296 for w in left._top_wids: | |
| 297 w._bottom_wids.remove(left) | |
| 298 for w in left._bottom_wids: | |
| 299 w._top_wids.remove(left) | |
| 300 self.parent.remove_widget(left) | |
| 301 self._split = 'None' | |
| 302 self.canvas.after.remove(self.ellipse) | |
| 303 del self.ellipse | |
| 13 | 304 |
| 154 | 305 def set_widget(self, wid, index=0): |
| 306 self.carousel.add_widget(wid, index) | |
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307 |
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308 def changeWidget(self, new_widget): |
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309 """Change currently displayed widget |
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310 |
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311 slides widgets will be updated |
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312 """ |
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313 # slides update need to be blocked to avoid the update in onSlideChange |
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314 # which would mess the removal of current widgets |
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315 self._slides_update_lock = True |
| 154 | 316 current = self.carousel.current_slide |
| 317 for w in self.carousel.slides: | |
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318 if w == current or w == new_widget: |
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319 continue |
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320 if isinstance(w, quick_widgets.QuickWidget): |
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321 G.host.widgets.deleteWidget(w) |
| 154 | 322 self.carousel.clear_widgets() |
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323 self.carousel.add_widget(G.host.getOrClone(new_widget)) |
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324 self._slides_update_lock = False |
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325 self.updateHiddenSlides() |
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326 |
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327 def onSlideChange(self, handler, new_slide): |
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328 if self._former_slide is not None: |
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329 if self._former_slide is new_slide: |
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330 # FIXME: workaround for Kivy a95d67f (and above?), Carousel.current_slide |
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331 # binding now calls onSlideChange twice with the same widget (here |
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332 # "new_slide"). To be checked with Kivy team. |
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333 return |
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334 G.host._removeVisibleWidget(self._former_slide) |
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335 self._former_slide = new_slide |
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336 if new_slide is not None: |
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337 G.host._addVisibleWidget(new_slide) |
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338 self.updateHiddenSlides() |
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339 |
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340 def hiddenList(self, visible_list): |
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341 """return widgets of same class as holded one which are hidden |
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342 |
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343 @param visible_list(list[QuickWidget]): widgets visible |
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344 @return (iter[QuickWidget]): widgets hidden |
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345 """ |
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346 added = [(w.targets, w.profiles) for w in visible_list] # we want to avoid recreated widgets |
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347 for w in G.host.widgets.getWidgets(self.current_slide.__class__, profiles=self.current_slide.profiles): |
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348 if w in visible_list or (w.targets, w.profiles) in added: |
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349 continue |
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350 yield w |
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351 |
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352 def widgets_sort(self, widget): |
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353 """method used as key to sort the widgets |
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354 |
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355 order of the widgets when changing slide is affected |
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356 @param widget(QuickWidget): widget to sort |
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357 @return: a value which will be used for sorting |
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358 """ |
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359 try: |
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360 return unicode(widget.target).lower() |
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361 except AttributeError: |
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362 return unicode(list(widget.targets)[0]).lower() |
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363 |
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364 def updateHiddenSlides(self): |
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365 """adjust carousel slides according to visible widgets""" |
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366 if self._slides_update_lock: |
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367 return |
| 154 | 368 if not isinstance(self.carousel.current_slide, quick_widgets.QuickWidget): |
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369 return |
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370 # lock must be used here to avoid recursions |
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371 self._slides_update_lock = True |
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372 visible_list = G.host.getVisibleList(self.current_slide.__class__) |
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373 hidden = list(self.hiddenList(visible_list)) |
| 154 | 374 slides_sorted = sorted(hidden + [self.carousel.current_slide], key=self.widgets_sort) |
| 375 to_remove = set(self.carousel.slides).difference({self.carousel.current_slide}) | |
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376 for w in to_remove: |
| 154 | 377 self.carousel.remove_widget(w) |
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378 if hidden: |
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379 # no need to add more than two widgets (next and previous), |
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380 # as the list will be updated on each new visible widget |
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381 current_idx = slides_sorted.index(self.current_slide) |
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382 try: |
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383 next_slide = slides_sorted[current_idx+1] |
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384 except IndexError: |
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385 next_slide = slides_sorted[0] |
| 154 | 386 self.carousel.add_widget(G.host.getOrClone(next_slide)) |
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387 if len(hidden)>1: |
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388 previous_slide = slides_sorted[current_idx-1] |
| 154 | 389 self.carousel.add_widget(G.host.getOrClone(previous_slide)) |
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390 |
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391 self._slides_update_lock = False |
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392 |
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393 |
| 154 | 394 class WidgetsHandlerLayout(Layout): |
| 395 count = 0 | |
| 13 | 396 |
| 154 | 397 def __init__(self, **kwargs): |
| 398 super(WidgetsHandlerLayout, self).__init__(**kwargs) | |
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399 self._layout_size = None # size used for the last layout |
| 154 | 400 fbind = self.fbind |
| 401 update = self._trigger_layout | |
| 402 fbind('children', update) | |
| 403 fbind('parent', update) | |
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404 fbind('size', self.adjust_prop) |
| 154 | 405 fbind('pos', update) |
| 13 | 406 |
| 14 | 407 @property |
| 408 def default_widget(self): | |
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409 return G.host.default_wid['factory'](G.host.default_wid, None, None) |
| 14 | 410 |
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411 def adjust_prop(self, handler, new_size): |
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412 """Adjust children proportion |
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413 |
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414 useful when this widget is resized (e.g. when going to fullscreen) |
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415 """ |
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416 if len(self.children) > 1: |
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417 old_width, old_height = self._layout_size |
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418 if not old_width or not old_height: |
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419 # we don't want division by zero |
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420 return self._trigger_layout(handler, new_size) |
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421 width_factor = float(self.width) / old_width |
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422 height_factor = float(self.height) / old_height |
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423 for child in self.children: |
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424 child.width *= width_factor |
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425 child.height *= height_factor |
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426 child.x *= width_factor |
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427 child.y *= height_factor |
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428 self._trigger_layout(handler, new_size) |
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429 |
| 154 | 430 def do_layout(self, *args): |
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431 self._layout_size = self.size[:] |
| 154 | 432 for child in self.children: |
| 433 # XXX: left must be calculated before right and bottom before top | |
| 434 # because they are the pos, and are used to caculate size (right and top) | |
| 435 # left | |
| 436 left = child._left_wid | |
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437 left_end_x = self.x-1 if left is None else left.right |
| 154 | 438 if child.x != left_end_x + 1 and child._split == "None": |
| 439 child.x = left_end_x + 1 | |
| 440 # right | |
| 441 right = child._right_wid | |
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442 right_x = self.right + 1 if right is None else right.x |
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443 if child.right != right_x - 1: |
| 154 | 444 child.width = right_x - child.x - 1 |
| 445 # bottom | |
| 446 bottom = child._bottom_wid | |
| 447 if bottom is None: | |
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448 if child.y != self.y: |
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449 child.y = self.y |
| 154 | 450 else: |
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451 if child.y != bottom.top + 1: |
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452 child.y = bottom.top + 1 |
| 154 | 453 # top |
| 454 top = child._top_wid | |
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455 top_y = self.top+1 if top is None else top.y |
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456 if child.top != top_y - 1: |
| 154 | 457 if child._split == "None": |
| 458 child.height = top_y - child.y - 1 | |
| 459 | |
| 460 def remove_widget(self, wid): | |
| 461 super(WidgetsHandlerLayout, self).remove_widget(wid) | |
| 462 log.debug("widget deleted ({})".format(wid._wid_idx)) | |
| 463 | |
| 464 def add_widget(self, wid=None, index=0): | |
| 465 WidgetsHandlerLayout.count += 1 | |
| 466 if wid is None: | |
| 467 wid = self.default_widget | |
| 468 wrapper = WHWrapper(_wid_idx=WidgetsHandlerLayout.count) | |
| 469 log.debug("WHWrapper created ({})".format(wrapper._wid_idx)) | |
| 470 wrapper.set_widget(wid) | |
| 471 super(WidgetsHandlerLayout, self).add_widget(wrapper, index) | |
| 472 return wrapper | |
| 473 | |
| 474 | |
| 475 class WidgetsHandler(WidgetsHandlerLayout): | |
| 476 | |
| 477 def __init__(self, **kw): | |
| 478 super(WidgetsHandler, self).__init__(**kw) | |
| 479 self.wrapper = self.add_widget() | |
| 480 | |
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481 @property |
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482 def cagou_widget(self): |
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483 """get holded CagouWidget""" |
| 154 | 484 return self.wrapper.current_slide |