84 lines
3.0 KiB
Python
84 lines
3.0 KiB
Python
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from kivy.uix.gridlayout import GridLayout
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from kivy.uix.button import Button
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from kivy.uix.behaviors import CompoundSelectionBehavior
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from kivy.uix.behaviors import FocusBehavior
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from kivy.app import runTouchApp
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class SelectableGrid(FocusBehavior, CompoundSelectionBehavior, GridLayout):
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def __init__(self, **kwargs):
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super(SelectableGrid, self).__init__(**kwargs)
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def print_selection(*l):
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print('selected: ', [x.text for x in self.selected_nodes])
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self.bind(selected_nodes=print_selection)
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def keyboard_on_key_down(self, window, keycode, text, modifiers):
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if super(SelectableGrid, self).keyboard_on_key_down(
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window, keycode, text, modifiers):
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return True
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if self.select_with_key_down(window, keycode, text, modifiers):
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return True
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return False
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def keyboard_on_key_up(self, window, keycode):
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if super(SelectableGrid, self).keyboard_on_key_up(window, keycode):
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return True
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if self.select_with_key_up(window, keycode):
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return True
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return False
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def goto_node(self, key, last_node, last_node_idx):
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''' This function is used to go to the node by typing the number
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of the text of the button.
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'''
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node, idx = super(SelectableGrid, self).goto_node(key, last_node,
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last_node_idx)
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if node != last_node:
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return node, idx
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items = list(enumerate(self.get_selectable_nodes()))
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'''If self.nodes_order_reversed (the default due to using
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self.children which is reversed), the index is counted from the
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starts of the selectable nodes, like normal but the nodes are traversed
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in the reverse order.
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'''
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# start searching after the last selected node
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if not self.nodes_order_reversed:
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items = items[last_node_idx + 1:] + items[:last_node_idx + 1]
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else:
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items = items[:last_node_idx][::-1] + items[last_node_idx:][::-1]
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for i, child in items:
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if child.text.startswith(key):
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return child, i
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return node, idx
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def select_node(self, node):
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node.background_color = (1, 0, 0, 1)
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return super(SelectableGrid, self).select_node(node)
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def deselect_node(self, node):
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node.background_color = (1, 1, 1, 1)
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super(SelectableGrid, self).deselect_node(node)
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def do_touch(self, instance, touch):
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if ('button' in touch.profile and touch.button in
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('scrollup', 'scrolldown', 'scrollleft', 'scrollright')) or\
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instance.collide_point(*touch.pos):
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self.select_with_touch(instance, touch)
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else:
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return False
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return True
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root = SelectableGrid(cols=5, up_count=5, multiselect=True, scroll_count=1)
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for i in range(40):
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c = Button(text=str(i))
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c.bind(on_touch_down=root.do_touch)
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root.add_widget(c)
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runTouchApp(root)
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