Mercurial > pyntnclick

annotate pyntnclick/widgets/toollist.py @ 803:bcc9277a23e6 pyntnclick

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Refactor widget positioning API. Remove unused widgets
author Stefano Rivera <stefano@rivera.za.net>
date Sun, 27 Jan 2013 14:52:16 +0200
parents efa58c92b304
children
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1 from pyntntclick.widgets.base import Container
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2 from pyntntclick.widgets.text import TextButton
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3
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4
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5 class ToolListWidget(Container):
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6 """List of other widgets, with some paging trickery"""
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7
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8 def __init__(self, pos, gd, size, widget_list, page_length,
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9 padding=2):
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10 widget_list.sort(key=lambda w: w.text)
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11 self.widget_list = widget_list
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12 self.page_length = page_length
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13 self.padding = padding
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14 self.page = 0
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15 super(ToolListWidget, self).__init__(pos, gd, size)
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16 self.prev_but = None
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17 self.next_but = None
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18
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19 def prepare(self):
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20 self.fill_page()
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21
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22 def fill_page(self):
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23 for widget in self.children[:]:
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24 self.remove(widget)
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25 start_page = self.page * self.page_length
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26 end_page = start_page + self.page_length
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27 button_height = self.rect.top + self.padding
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28 button_left = self.rect.left + self.padding
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29 for widget in self.widget_list[start_page:end_page]:
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30 widget.rect.topleft = (button_left, button_height)
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31 self.add(widget)
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32 button_height += widget.rect.height + self.padding
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33 if not self.prev_but:
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34 self.prev_but = TextButton((button_left, button_height),
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35 u'\N{LEFTWARDS ARROW}')
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36 self.prev_but.add_callback('clicked', self.change_page, -1)
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37 else:
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38 self.prev_but.rect.top = max(button_height, self.prev_but.rect.top)
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39 if not self.next_but:
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40 self.next_but = TextButton((button_left + 100, button_height),
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41 u'\N{RIGHTWARDS ARROW}')
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42 self.next_but.add_callback('clicked', self.change_page, 1)
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43 else:
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44 self.next_but.rect.top = max(button_height, self.next_but.rect.top)
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45 if start_page > 0:
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46 self.prev_but.enable()
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47 else:
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48 self.prev_but.disable()
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49 if end_page < len(self.widget_list):
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50 self.next_but.enable()
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51 else:
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52 self.next_but.disable()
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53 self.add(self.prev_but)
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54 self.add(self.next_but)
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55 for widget in self.children[:]:
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56 if widget in self.widget_list:
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57 # Standardise widdths
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58 widget.rect.width = self.rect.width - 2
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59 widget.prepare()
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60
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61 def change_page(self, ev, widget, change):
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62 self.page += change
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63 self.fill_page()
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64 return True