Mercurial > libervia-desktop-kivy
annotate cagou/core/widgets_handler.py @ 126:cd99f70ea592
global file reorganisation:
- follow common convention by puttin cagou in "cagou" instead of "src/cagou"
- added VERSION in cagou with current version
- updated dates
- moved main executable in /bin
- moved buildozer files in root directory
- temporary moved platform to assets/platform
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Thu, 05 Apr 2018 17:11:21 +0200 |
| parents | src/cagou/core/widgets_handler.py@1922506846be |
| children | a5e8833184c6 |
| 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__) | |
|
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23 from sat_frontends.quick_frontend import quick_widgets |
| 13 | 24 from kivy.uix.boxlayout import BoxLayout |
| 25 from kivy.uix.button import Button | |
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26 from kivy.uix.carousel import Carousel |
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27 from kivy.metrics import dp |
| 13 | 28 from kivy import properties |
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29 from cagou import G |
| 13 | 30 |
| 31 | |
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32 CAROUSEL_SCROLL_DISTANCE = dp(50) |
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33 CAROUSEL_SCROLL_TIMEOUT = 80 |
| 13 | 34 NEW_WIDGET_DIST = 10 |
| 35 REMOVE_WIDGET_DIST = NEW_WIDGET_DIST | |
| 36 | |
| 37 | |
| 38 class WHSplitter(Button): | |
| 39 horizontal=properties.BooleanProperty(True) | |
| 62 | 40 thickness=properties.NumericProperty(dp(20)) |
| 13 | 41 split_move = None # we handle one split at a time, so we use a class attribute |
| 42 | |
| 43 def __init__(self, handler, **kwargs): | |
| 44 super(WHSplitter, self).__init__(**kwargs) | |
| 45 self.handler = handler | |
| 46 | |
| 47 def getPos(self, touch): | |
| 48 if self.horizontal: | |
| 49 relative_y = self.handler.to_local(*touch.pos, relative=True)[1] | |
| 50 return self.handler.height - relative_y | |
| 51 else: | |
| 52 return touch.x | |
| 53 | |
| 54 def on_touch_move(self, touch): | |
| 55 if self.split_move is None and self.collide_point(*touch.opos): | |
| 56 WHSplitter.split_move = self | |
| 57 | |
| 58 if self.split_move is self: | |
| 59 pos = self.getPos(touch) | |
| 60 if pos > NEW_WIDGET_DIST: | |
| 61 # we are above minimal distance, we resize the widget | |
| 62 self.handler.setWidgetSize(self.horizontal, pos) | |
| 63 | |
| 64 def on_touch_up(self, touch): | |
| 65 if self.split_move is self: | |
| 66 pos = self.getPos(touch) | |
| 67 if pos <= REMOVE_WIDGET_DIST: | |
| 68 # if we go under minimal distance, the widget is not wanted anymore | |
| 69 self.handler.removeWidget(self.horizontal) | |
| 70 WHSplitter.split_move=None | |
| 71 return super(WHSplitter, self).on_touch_up(touch) | |
| 72 | |
| 73 | |
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74 class HandlerCarousel(Carousel): |
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75 |
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76 def __init__(self, *args, **kwargs): |
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77 super(HandlerCarousel, self).__init__( |
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78 *args, |
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79 direction='right', |
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80 loop=True, |
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81 **kwargs) |
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82 self._former_slide = None |
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83 self.bind(current_slide=self.onSlideChange) |
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84 self._slides_update_lock = False |
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85 |
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86 def changeWidget(self, new_widget): |
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87 """Change currently displayed widget |
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88 |
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89 slides widgets will be updated |
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90 """ |
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91 # slides update need to be blocked to avoid the update in onSlideChange |
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92 # which would mess the removal of current widgets |
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93 self._slides_update_lock = True |
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94 current = self.current_slide |
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95 for w in self.slides: |
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96 if w == current or w == new_widget: |
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97 continue |
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98 if isinstance(w, quick_widgets.QuickWidget): |
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99 G.host.widgets.deleteWidget(w) |
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100 self.clear_widgets() |
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101 self.add_widget(new_widget) |
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102 self._slides_update_lock = False |
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103 self.updateHiddenSlides() |
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104 |
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105 def onSlideChange(self, handler, new_slide): |
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106 if isinstance(self._former_slide, quick_widgets.QuickWidget): |
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107 G.host.removeVisibleWidget(self._former_slide) |
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108 self._former_slide = new_slide |
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109 if isinstance(new_slide, quick_widgets.QuickWidget): |
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110 G.host.addVisibleWidget(new_slide) |
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111 self.updateHiddenSlides() |
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112 |
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113 def hiddenList(self, visible_list): |
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114 """return widgets of same class as holded one which are hidden |
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115 |
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116 @param visible_list(list[QuickWidget]): widgets visible |
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117 @return (iter[QuickWidget]): widgets hidden |
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118 """ |
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119 added = [(w.targets, w.profiles) for w in visible_list] # we want to avoid recreated widgets |
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120 for w in G.host.widgets.getWidgets(self.current_slide.__class__, profiles=self.current_slide.profiles): |
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121 if w in visible_list or (w.targets, w.profiles) in added: |
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122 continue |
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123 yield w |
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124 |
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125 def widgets_sort(self, widget): |
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126 """method used as key to sort the widgets |
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127 |
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128 order of the widgets when changing slide is affected |
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129 @param widget(QuickWidget): widget to sort |
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130 @return: a value which will be used for sorting |
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131 """ |
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132 try: |
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133 return unicode(widget.target).lower() |
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134 except AttributeError: |
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135 return unicode(list(widget.targets)[0]).lower() |
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136 |
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137 def updateHiddenSlides(self): |
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138 """adjust carousel slides according to visible widgets""" |
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139 if self._slides_update_lock: |
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140 return |
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141 if not isinstance(self.current_slide, quick_widgets.QuickWidget): |
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142 return |
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143 # lock must be used here to avoid recursions |
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144 self._slides_update_lock = True |
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145 visible_list = G.host.getVisibleList(self.current_slide.__class__) |
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146 hidden = list(self.hiddenList(visible_list)) |
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147 slides_sorted = sorted(hidden + [self.current_slide], key=self.widgets_sort) |
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148 to_remove = set(self.slides).difference({self.current_slide}) |
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149 for w in to_remove: |
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150 self.remove_widget(w) |
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151 if hidden: |
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152 # no need to add more than two widgets (next and previous), |
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153 # as the list will be updated on each new visible widget |
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154 current_idx = slides_sorted.index(self.current_slide) |
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155 try: |
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156 next_slide = slides_sorted[current_idx+1] |
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157 except IndexError: |
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158 next_slide = slides_sorted[0] |
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159 self.add_widget(G.host.getOrClone(next_slide)) |
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160 if len(hidden)>1: |
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161 previous_slide = slides_sorted[current_idx-1] |
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162 self.add_widget(G.host.getOrClone(previous_slide)) |
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163 |
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164 if len(self.slides) == 1: |
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165 # we block carousel with high scroll_distance to avoid swiping |
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166 # when the is not other instance of the widget |
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167 self.scroll_distance=2**32 |
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168 self.scroll_timeout=0 |
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169 else: |
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170 self.scroll_distance = CAROUSEL_SCROLL_DISTANCE |
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171 self.scroll_timeout=CAROUSEL_SCROLL_TIMEOUT |
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172 self._slides_update_lock = False |
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173 |
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174 |
| 13 | 175 class WidgetsHandler(BoxLayout): |
| 176 | |
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177 def __init__(self, wid=None, **kw): |
| 14 | 178 if wid is None: |
| 179 wid=self.default_widget | |
| 13 | 180 self.vert_wid = self.hor_wid = None |
| 181 BoxLayout.__init__(self, orientation="vertical", **kw) | |
| 182 self.blh = BoxLayout(orientation="horizontal") | |
| 183 self.blv = BoxLayout(orientation="vertical") | |
| 184 self.blv.add_widget(WHSplitter(self)) | |
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185 self.carousel = HandlerCarousel() |
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186 self.blv.add_widget(self.carousel) |
| 13 | 187 self.blh.add_widget(WHSplitter(self, horizontal=False)) |
| 188 self.blh.add_widget(self.blv) | |
| 189 self.add_widget(self.blh) | |
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190 self.changeWidget(wid) |
| 13 | 191 |
| 14 | 192 @property |
| 193 def default_widget(self): | |
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194 return G.host.default_wid['factory'](G.host.default_wid, None, None) |
| 14 | 195 |
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196 @property |
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197 def cagou_widget(self): |
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198 """get holded CagouWidget""" |
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199 return self.carousel.current_slide |
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200 |
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201 def changeWidget(self, new_widget): |
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202 self.carousel.changeWidget(new_widget) |
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203 |
| 13 | 204 def removeWidget(self, vertical): |
| 205 if vertical and self.vert_wid is not None: | |
| 206 self.remove_widget(self.vert_wid) | |
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207 self.vert_wid.onDelete() |
| 13 | 208 self.vert_wid = None |
| 209 elif self.hor_wid is not None: | |
| 210 self.blh.remove_widget(self.hor_wid) | |
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211 self.hor_wid.onDelete() |
| 13 | 212 self.hor_wid = None |
| 213 | |
| 214 def setWidgetSize(self, vertical, size): | |
| 215 if vertical: | |
| 216 if self.vert_wid is None: | |
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217 self.vert_wid = WidgetsHandler(self.default_widget, size_hint=(1, None)) |
| 13 | 218 self.add_widget(self.vert_wid, len(self.children)) |
| 219 self.vert_wid.height=size | |
| 220 else: | |
| 221 if self.hor_wid is None: | |
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222 self.hor_wid = WidgetsHandler(self.default_widget, size_hint=(None, 1)) |
| 13 | 223 self.blh.add_widget(self.hor_wid, len(self.blh.children)) |
| 224 self.hor_wid.width=size | |
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225 |
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226 def onDelete(self): |
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227 # when this handler is deleted, we need to delete the holded CagouWidget |
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228 cagou_widget = self.cagou_widget |
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229 if isinstance(cagou_widget, quick_widgets.QuickWidget): |
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230 G.host.removeVisibleWidget(cagou_widget) |