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comparison pyntnclick/widgets/toollist.py @ 555:c0474fe18b96 pyntnclick

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Copy in widgets from mamba (currently unused)
author Stefano Rivera <stefano@rivera.za.net>
date Sat, 11 Feb 2012 14:09:46 +0200
parents
children f9f04cb35697
comparison
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554:99a1420097df 555:c0474fe18b96
1 from pygame.constants import KEYUP, K_1, K_PAGEDOWN, K_PAGEUP
2
3 from mamba.widgets.base import Container
4 from mamba.widgets.text import TextButton
5
6
7 class ToolListWidget(Container):
8 """List of other widgets, with some paging trickery"""
9
10 def __init__(self, rect, widget_list, page_length, start_key=K_1,
11 padding=2):
12 widget_list.sort(key=lambda w: w.text)
13 self.widget_list = widget_list
14 self.page_length = page_length
15 self.padding = padding
16 self.page = 0
17 self.start_key = start_key
18 super(ToolListWidget, self).__init__(rect)
19 self.prev_but = None
20 self.next_but = None
21 self.fill_page()
22 # We do this to avoid needing to worry about focus too much
23 self.add_callback(KEYUP, self.handle_key)
24 self.focussable = True
25
26 def fill_page(self):
27 for widget in self.children[:]:
28 self.remove(widget)
29 self.hot_keys = {}
30 start_page = self.page * self.page_length
31 end_page = start_page + self.page_length
32 button_height = self.rect.top + self.padding
33 button_left = self.rect.left + self.padding
34 key = self.start_key
35 for widget in self.widget_list[start_page:end_page]:
36 widget.rect.topleft = (button_left, button_height)
37 self.add(widget)
38 if key:
39 self.hot_keys[key] = widget
40 key += 1
41 button_height += widget.rect.height + self.padding
42 if not self.prev_but:
43 self.prev_but = TextButton((button_left, button_height),
44 u'\N{LEFTWARDS ARROW}')
45 self.prev_but.add_callback('clicked', self.change_page, -1)
46 else:
47 self.prev_but.rect.top = max(button_height, self.prev_but.rect.top)
48 if not self.next_but:
49 self.next_but = TextButton((button_left + 100, button_height),
50 u'\N{RIGHTWARDS ARROW}')
51 self.next_but.add_callback('clicked', self.change_page, 1)
52 else:
53 self.next_but.rect.top = max(button_height, self.next_but.rect.top)
54 if start_page > 0:
55 self.prev_but.enable()
56 else:
57 self.prev_but.disable()
58 if end_page < len(self.widget_list):
59 self.next_but.enable()
60 else:
61 self.next_but.disable()
62 self.add(self.prev_but)
63 self.add(self.next_but)
64 for widget in self.children[:]:
65 if widget in self.widget_list:
66 # Standardise widdths
67 widget.rect.width = self.rect.width - 2
68 widget.prepare()
69
70 def handle_key(self, ev, widget):
71 if hasattr(self.parent, 'paused') and self.parent.paused:
72 # No hotjets when pasued
73 return False
74 if ev.key in self.hot_keys:
75 widget = self.hot_keys[ev.key]
76 return widget.forced_click()
77 elif ev.key == K_PAGEDOWN and self.prev_but:
78 return self.prev_but.forced_click()
79 elif ev.key == K_PAGEUP and self.next_but:
80 return self.next_but.forced_click()
81
82 def change_page(self, ev, widget, change):
83 self.page += change
84 self.fill_page()
85 return True