Python/Kivy : 使用键盘上下键移动光标到动态添加行
Python/Kivy : Move cursor using keyboard up and down key into dynamic add row
我正在使用 python-2.7 和 kivy。当我点击 +Add More 然后行将添加 dynamic.Someone 帮助我如何使用键盘将光标 one row 跳转到 another row？
如果光标进入 2nd row、2nd column。如果我按 up 键，那么光标应该跳转到 1st row、2nd column。并且
如果我按 down 键，那么光标应该跳转到 3rd row、2nd column。
test.py
from kivy.uix.screenmanager import Screen
from kivy.app import App
from kivy.core.window import Window
from kivy.uix.boxlayout import BoxLayout
from kivy.properties import StringProperty
Window.size = (450, 325)
class display(Screen):
def add_more(self):
self.ids.rows.add_row()
class Row(BoxLayout):
button_text = StringProperty("")
class Rows(BoxLayout):
orientation = "vertical"
row_count = 0
def __init__(self, **kwargs):
super(Rows, self).__init__(**kwargs)
self.add_row()
def add_row(self):
self.row_count += 1
self.add_widget(Row(button_text=str(self.row_count)))
class test(App):
def build(self):
return self.root
if __name__ == '__main__':
test().run()
test.kv
<Row>:
orientation: "horizontal"
Button:
text: root.button_text
size_hint_x: .2
TextInput:
size_hint_x: .8
TextInput:
size_hint_x: .8
display:
BoxLayout:
orientation: "vertical"
BoxLayout:
orientation: "horizontal"
Button:
size_hint_x: .2
text: "+Add More"
valign: 'bottom'
on_press: root.add_more()
BoxLayout:
orientation: "horizontal"
Rows:
id: rows
解决方案如follow.Please参考片段，详细示例
片段
请修改此函数：
class display(Screen):
def __init__(self, **kwargs):
super(display, self).__init__(**kwargs)
Window.bind(on_key_down=self._on_keyboard_down)
def _on_keyboard_down(self, instance, keyboard, keycode, text, modifiers):
if int(keycode) == 81 or int(keycode) == 82:
if int(keycode) == 82:
key = 'up'
if int(keycode) == 81:
key = 'down'
rows = self.ids.rows
countRowLen = len(rows.children)
i = 0
for row in reversed(rows.children):
i = i + 1
j = 0
for ch in reversed(row.children):
if isinstance(ch, TextInput):
j = j + 1
if ch.focus == True:
self.params = {'count': countRowLen, 'row':i, 'column':j, 'key':key, 'gridObj': rows}
set_focus_grid_use_keyboard(self)
return True
return True
def add_more(self):
self.ids.rows.add_row()
添加新功能
def set_focus_grid_use_keyboard(obj):
if int(obj.params['count']) == int(obj.params['row']) and obj.params['key'] == 'down':
focusRow = int(1)
elif int(obj.params['row']) == 1 and obj.params['key'] == 'up':
focusRow = int(obj.params['count'])
elif obj.params['key'] == 'down':
focusRow = int(obj.params['row']) + 1
elif obj.params['key'] == 'up':
focusRow = int(obj.params['row']) - 1
i = 0
for row in reversed(obj.params['gridObj'].children):
i += 1
j = 0
print(i)
print(focusRow)
if i == int(focusRow):
for ch in reversed(row.children):
if isinstance(ch, TextInput):
j += 1
if j == int(obj.params['column']):
ch.focus = True
return False
示例
test.py
from kivy.uix.screenmanager import Screen
from kivy.app import App
from kivy.core.window import Window
from kivy.uix.boxlayout import BoxLayout
from kivy.properties import StringProperty
from kivy.uix.textinput import TextInput
Window.size = (450, 325)
def set_focus_grid_use_keyboard(obj):
if int(obj.params['count']) == int(obj.params['row']) and obj.params['key'] == 'down':
focusRow = int(1)
elif int(obj.params['row']) == 1 and obj.params['key'] == 'up':
focusRow = int(obj.params['count'])
elif obj.params['key'] == 'down':
focusRow = int(obj.params['row']) + 1
elif obj.params['key'] == 'up':
focusRow = int(obj.params['row']) - 1
i = 0
for row in reversed(obj.params['gridObj'].children):
i += 1
j = 0
print(i)
print(focusRow)
if i == int(focusRow):
for ch in reversed(row.children):
if isinstance(ch, TextInput):
j += 1
if j == int(obj.params['column']):
ch.focus = True
return False
class display(Screen):
def __init__(self, **kwargs):
super(display, self).__init__(**kwargs)
Window.bind(on_key_down=self._on_keyboard_down)
def _on_keyboard_down(self, instance, keyboard, keycode, text, modifiers):
if int(keycode) == 81 or int(keycode) == 82:
if int(keycode) == 82:
key = 'up'
if int(keycode) == 81:
key = 'down'
rows = self.ids.rows
countRowLen = len(rows.children)
i = 0
for row in reversed(rows.children):
i = i + 1
j = 0
for ch in reversed(row.children):
if isinstance(ch, TextInput):
j = j + 1
if ch.focus == True:
self.params = {'count': countRowLen, 'row':i, 'column':j, 'key':key, 'gridObj': rows}
set_focus_grid_use_keyboard(self)
return True
return True
def add_more(self):
self.ids.rows.add_row()
class Row(BoxLayout):
button_text = StringProperty("")
class Rows(BoxLayout):
orientation = "vertical"
row_count = 0
def __init__(self, **kwargs):
super(Rows, self).__init__(**kwargs)
self.add_row()
def add_row(self):
self.row_count += 1
self.add_widget(Row(button_text=str(self.row_count)))
class test(App):
def build(self):
return self.root
if __name__ == '__main__':
test().run()
test.kv
<Row>:
orientation: "horizontal"
Button:
text: root.button_text
size_hint_x: .2
TextInput:
size_hint_x: .8
TextInput:
size_hint_x: .8
display:
BoxLayout:
orientation: "vertical"
BoxLayout:
orientation: "horizontal"
Button:
size_hint_x: .2
text: "+Add More"
valign: 'bottom'
on_press: root.add_more()
BoxLayout:
orientation: "horizontal"
Rows:
id: rows
我正在使用 python-2.7 和 kivy。当我点击 +Add More 然后行将添加 dynamic.Someone 帮助我如何使用键盘将光标 one row 跳转到 another row？
如果光标进入 2nd row、2nd column。如果我按 up 键，那么光标应该跳转到 1st row、2nd column。并且
如果我按 down 键，那么光标应该跳转到 3rd row、2nd column。
test.py
from kivy.uix.screenmanager import Screen
from kivy.app import App
from kivy.core.window import Window
from kivy.uix.boxlayout import BoxLayout
from kivy.properties import StringProperty
Window.size = (450, 325)
class display(Screen):
def add_more(self):
self.ids.rows.add_row()
class Row(BoxLayout):
button_text = StringProperty("")
class Rows(BoxLayout):
orientation = "vertical"
row_count = 0
def __init__(self, **kwargs):
super(Rows, self).__init__(**kwargs)
self.add_row()
def add_row(self):
self.row_count += 1
self.add_widget(Row(button_text=str(self.row_count)))
class test(App):
def build(self):
return self.root
if __name__ == '__main__':
test().run()
test.kv
<Row>:
orientation: "horizontal"
Button:
text: root.button_text
size_hint_x: .2
TextInput:
size_hint_x: .8
TextInput:
size_hint_x: .8
display:
BoxLayout:
orientation: "vertical"
BoxLayout:
orientation: "horizontal"
Button:
size_hint_x: .2
text: "+Add More"
valign: 'bottom'
on_press: root.add_more()
BoxLayout:
orientation: "horizontal"
Rows:
id: rows
解决方案如follow.Please参考片段，详细示例
片段
请修改此函数：
class display(Screen):
def __init__(self, **kwargs):
super(display, self).__init__(**kwargs)
Window.bind(on_key_down=self._on_keyboard_down)
def _on_keyboard_down(self, instance, keyboard, keycode, text, modifiers):
if int(keycode) == 81 or int(keycode) == 82:
if int(keycode) == 82:
key = 'up'
if int(keycode) == 81:
key = 'down'
rows = self.ids.rows
countRowLen = len(rows.children)
i = 0
for row in reversed(rows.children):
i = i + 1
j = 0
for ch in reversed(row.children):
if isinstance(ch, TextInput):
j = j + 1
if ch.focus == True:
self.params = {'count': countRowLen, 'row':i, 'column':j, 'key':key, 'gridObj': rows}
set_focus_grid_use_keyboard(self)
return True
return True
def add_more(self):
self.ids.rows.add_row()
添加新功能
def set_focus_grid_use_keyboard(obj):
if int(obj.params['count']) == int(obj.params['row']) and obj.params['key'] == 'down':
focusRow = int(1)
elif int(obj.params['row']) == 1 and obj.params['key'] == 'up':
focusRow = int(obj.params['count'])
elif obj.params['key'] == 'down':
focusRow = int(obj.params['row']) + 1
elif obj.params['key'] == 'up':
focusRow = int(obj.params['row']) - 1
i = 0
for row in reversed(obj.params['gridObj'].children):
i += 1
j = 0
print(i)
print(focusRow)
if i == int(focusRow):
for ch in reversed(row.children):
if isinstance(ch, TextInput):
j += 1
if j == int(obj.params['column']):
ch.focus = True
return False
示例
test.py
from kivy.uix.screenmanager import Screen
from kivy.app import App
from kivy.core.window import Window
from kivy.uix.boxlayout import BoxLayout
from kivy.properties import StringProperty
from kivy.uix.textinput import TextInput
Window.size = (450, 325)
def set_focus_grid_use_keyboard(obj):
if int(obj.params['count']) == int(obj.params['row']) and obj.params['key'] == 'down':
focusRow = int(1)
elif int(obj.params['row']) == 1 and obj.params['key'] == 'up':
focusRow = int(obj.params['count'])
elif obj.params['key'] == 'down':
focusRow = int(obj.params['row']) + 1
elif obj.params['key'] == 'up':
focusRow = int(obj.params['row']) - 1
i = 0
for row in reversed(obj.params['gridObj'].children):
i += 1
j = 0
print(i)
print(focusRow)
if i == int(focusRow):
for ch in reversed(row.children):
if isinstance(ch, TextInput):
j += 1
if j == int(obj.params['column']):
ch.focus = True
return False
class display(Screen):
def __init__(self, **kwargs):
super(display, self).__init__(**kwargs)
Window.bind(on_key_down=self._on_keyboard_down)
def _on_keyboard_down(self, instance, keyboard, keycode, text, modifiers):
if int(keycode) == 81 or int(keycode) == 82:
if int(keycode) == 82:
key = 'up'
if int(keycode) == 81:
key = 'down'
rows = self.ids.rows
countRowLen = len(rows.children)
i = 0
for row in reversed(rows.children):
i = i + 1
j = 0
for ch in reversed(row.children):
if isinstance(ch, TextInput):
j = j + 1
if ch.focus == True:
self.params = {'count': countRowLen, 'row':i, 'column':j, 'key':key, 'gridObj': rows}
set_focus_grid_use_keyboard(self)
return True
return True
def add_more(self):
self.ids.rows.add_row()
class Row(BoxLayout):
button_text = StringProperty("")
class Rows(BoxLayout):
orientation = "vertical"
row_count = 0
def __init__(self, **kwargs):
super(Rows, self).__init__(**kwargs)
self.add_row()
def add_row(self):
self.row_count += 1
self.add_widget(Row(button_text=str(self.row_count)))
class test(App):
def build(self):
return self.root
if __name__ == '__main__':
test().run()
test.kv
<Row>:
orientation: "horizontal"
Button:
text: root.button_text
size_hint_x: .2
TextInput:
size_hint_x: .8
TextInput:
size_hint_x: .8
display:
BoxLayout:
orientation: "vertical"
BoxLayout:
orientation: "horizontal"
Button:
size_hint_x: .2
text: "+Add More"
valign: 'bottom'
on_press: root.add_more()
BoxLayout:
orientation: "horizontal"
Rows:
id: rows