我有一个小型测试用例，它实际上显示了两个问题.
该应用程序的总体要点(感兴趣的部分)是构建一个控制台类型的显示，在文本输入小部件上方有一个ScrollView窗口.对于这个精简的测试用例，它应该 echo 输入的命令"t"，然后将3行文本打印到ScrollView，并清除文本输入.还有其他按钮作为占位符，以使层次 struct 变得现实.
首先，我try 为FloatLayout层次 struct 中的一个小部件调用kivy函数，这真是太糟糕了.我try 过屏幕、应用程序、根、self 、什么都没有，但似乎找不到一种方法来到达层次 struct 的顶部，然后下降到感兴趣的小部件.当布尔图形用户界面界面为True时，就会显示此问题.test901.py中的第25行和第38行存在此问题. 通过在""标签右侧的文本输入块中输入"tenter"来触发它.
其次，如果我将bool GUI_MED设置为False，那么我没有传递任何显式参数的调用就会出现参数不匹配(参数太多).第75、101和127行显示此问题.此代码是从另一个应用程序中删除的，它运行良好..通过在""标签右侧的文本输入块中输入"tenter"来触发它，布尔GUI_MED设置为False.(如果不一致，我什么也不是……)
如果您有关于如何在按下输入后将注意力集中在文本输入小部件上的提示，我将更加感激！
谢谢！
这是Python文件(尽我所能做到的最低可重复性.)
# test901.py
from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.widget import Widget
from kivy.core.window import Window
from kivy.properties import StringProperty, NumericProperty, ObjectProperty
from kivy.uix.boxlayout import BoxLayout
from kivy.clock import Clock
__version__ = '0.1'
# Set GUI_MODE to True for scrollview output, to False for regular console output
GUI_MODE = True
def common_print(prompt):
if GUI_MODE:
print(prompt) # For debug only
# May need a "for row in prompt: print_gui_output(row)" here...
########################################################################################
# HERE IS PROBLEM 1a, I can't figure out the addressing to get to this function.... #
# game_screen, app, root, screen are all unrecognised #
# Error visible if GUI_MODE = True, and "t<enter>" is typed on the TextInput GUI >>> #
########################################################################################
game_screen.print_gui_output(prompt)
else:
print(prompt)
def common_input(prompt):
if GUI_MODE:
########################################################################################
# HERE IS PROBLEM 1b, I can't figure out the addressing to get to this function.... #
# game_screen, app, root, screen are all unrecognised #
# Error visible if GUI_MODE = True, and "t <enter>" is typed on the TextInput GUI #
########################################################################################
my_input = game_screen.gui_input(prompt)
else:
my_input = input(prompt)
return my_input
class ScrollWindow(BoxLayout):
line_count = 0
io_history = ObjectProperty(None)
def gui_input(self, command):
print("step1")
# Add output to history
self.line_count += 1
if command[-1] == 13: # got here via the enter key rather than the button
command = command[0:-2] # delete the "enter" keystroke
row = HistoryOutput()
row.line_num = str(self.line_count)
# Here is the place we add text to the scrolling text window
row.output_text = ' ' + command
self.io_history.add_widget(row)
# Here is where we prepare the input for parsing, and set the quik_param if provided
cmd = command.lower().strip()
cmd_list2 = cmd.split()
quik_param = ""
if len(cmd_list2) > 1:
cmd = cmd_list2[0]
quik_param = cmd_list2[1]
# Here we interpret the command and execute it
parse_cmd(cmd, quik_param)
# Work-around for displayed row height issues
print("step2")
########################################################################################
# HERE IS PROBLEM 2a, I can't figure why this complains of parameter mismatch #
# I am not passing any explicit parameters to recalc_height, just the implicit self #
# Error visible if GUI_MODE = False, and "t <enter>" is typed on the TextInput GUI #
########################################################################################
Clock.schedule_once(self.recalc_height)
print("step3")
return command
def print_gui_output(self, rows):
print("Step4")
# Add output to history
for my_row in rows:
self.line_count += 1
if my_row[-1] == 13: # got here via the enter key rather than the button
my_row = my_row[0:-2] # delete the "enter" keystroke
row = HistoryOutput()
row.line_num = str(self.line_count)
# Here is the place we add text to the scrolling text window
row.output_text = ' ' + my_row
self.io_history.add_widget(row)
# Work-around for displayed row height issues
print("Step5")
########################################################################################
# HERE IS PROBLEM 2b, I can't figure why this complains of parameter mismatch #
# I am not passing any explicit parameters to recalc_height, just the implicit self #
# Error visible if GUI_MODE = False, and "t <enter>" is typed on the TextInput GUI #
########################################################################################
Clock.schedule_once(self.recalc_height)
print("Step6")
def recalc_height(self):
""" A method to add and remove a widget from the io_history to force
the recalculation of its height. Without this, the scrollview will
not work correctly.
"""
work_around = Widget()
self.io_history.add_widget(work_around)
self.io_history.remove_widget(work_around)
class HistoryOutput(BoxLayout):
def collapse_row(self, app, lbl):
if lbl.shorten:
lbl.shorten = False
else:
lbl.shorten = True
print("Step7")
########################################################################################
# HERE IS PROBLEM 2c, I can't figure why this complains of parameter mismatch #
# I am not passing any explicit parameters to recalc_height, just the implicit self #
# Error visible if GUI_MODE = False, and "t <enter>" is typed on the TextInput GUI #
########################################################################################
Clock.schedule_once(app.root.recalc_height)
class ScrollBox(Button):
pass
index = NumericProperty(0)
text_name = StringProperty("")
class GameScreen(Widget):
pass
class test901App(App):
def build(self):
return GameScreen()
Window.clearcolor = (1, 1, 1, 1)
Window.size = (1700, 936)
# from dateutil.parser import parse
def parse_cmd(cmd, quik_param):
if cmd == "t":
common_print("This is line 1\nThis is line 2\nThis is line 3")
else:
common_print("Unrecognized command, try again")
def get_string(prompt):
# my_string = "" + common_input(prompt)
my_string = common_input(prompt)
if my_string == "q":
# print("*** Quick Exit from get_string ***")
raise KeyboardInterrupt
return my_string
if __name__ == '__main__':
game_screen = test901App().run()
print("Stage2")
# Command line parser
while True:
try:
print("Stage_Get_Command")
cmd2 = get_string(
"\n\nEnter a command ")
cmd2 = cmd2.lower().strip()
cmd_list = cmd2.split()
quik_param2 = ""
if len(cmd_list) > 1:
cmd2 = cmd_list[0]
quik_param2 = cmd_list[1]
# print("Long Command")
parse_cmd(cmd2, quik_param2)
except KeyboardInterrupt:
continue
这是kivy文件test901.ð
#:kivy 2.3.0
<ScrollBox>:
size_hint_y: None
height: 16
canvas:
Button:
size_hint_y: None
height: 16
halign: 'left'
font_size: 13
font_name: 'RobotoMono-Regular'
text_size: self.width, self.height
background_normal: str(False)
#on_press: self.parent.parent.parent.parent.make_selection(self.parent.index)
text:"Hi World"
<GameScreen>:
id: game_screen
canvas:
Color:
rgba: 0, 0, 1, 1 # Blue (For the border)
Rectangle:
pos: root.x, root.y
size: root.width, root.height
Color:
rgba: 1, 1, 1, 1 # White
Rectangle:
pos: root.x + 5, root.y + 5
size: root.width - 10, root.height - 10
FloatLayout:
pos: 0,0
size: root.width, root.height
id: float_layout
# Floating array of Top Buttons, most of which are MultiSelectSpinners
Button:
text: 'Hi World'
pos_hint: {'x': .006, 'y': .89 }
size_hint: 0.045, .1
font_size: 22
bold: True
background_normal: ''
background_color: 0.2, 0.7, .2, 1 # Green
halign: 'center'
ScrollWindow:
id: scroll_window
pos_hint: {'x': .005, 'y': .15 }
size_hint: 0.988, .7
# Grid of bottom buttons
GridLayout:
cols: 2
pos_hint: {'x': .05, 'y': .01}
size_hint: None, None
size: root.width * .9, root.height * .1
color: 1, 1, 0, 1
# rgba: 0, 1, 0, 1 # Black text
Button:
text: 'Selection'
Button:
text: 'Add'
#:set padding_base 2
#:set sm_button_width 36
<HistoryOutput@BoxLayout>
height: output_label.height
orientation: 'horizontal'
size_hint: 1, None
line_num: "0"
output_text: "???"
ToggleButton:
height: self.texture_size[1] + sp(padding_base)
id: output_label
size_hint: 1, None
font_name: 'RobotoMono-Regular'
font_size: 14
text: root.output_text
text_size: self.size[0], None
background_color: {'normal': (0,0,0,1), 'down': (1,1,0,1)} [self.state] # Black / Green
background_normal: "1"
<ScrollWindow>:
io_history: io_history
orientation: 'vertical'
padding: sp(padding_base), sp(padding_base)
# Scrolling text window
ScrollView:
BoxLayout:
height: sum([c.height for c in self.children]) + (2 * sp(padding_base))
id: io_history
orientation: 'vertical'
size_hint: 1, None
# Console Input Line
BoxLayout:
height: sp(32)
orientation: 'horizontal'
size_hint: 1, None
Label:
id: prompt_label
size_hint: None, 1
color: 0, 0, 0, 1 # Black
text: ">>>"
width: sp(sm_button_width)
TextInput:
id: main_input
multiline: False
on_text_validate: root.gui_input(main_input.text); main_input.text=""
Button:
on_press: root.gui_input(main_input.text)
size_hint: None, 1
text: "Enter"
width: self.texture_size[0] + (8 * sp(padding_base))
将bool GUI_MED设置为True，并将命令"t enter"输入到文本输入小部件中，我会得到以下错误跟踪:
C:\Users\rick\AppData\Local\Programs\Python\Python310\python.exe C:/Users/rick/PycharmProjects/cruise2cruise/test901.py
[INFO ] [Logger ] Record log in C:\Users\rick\.kivy\logs\kivy_24-05-02_34.txt
[INFO ] [deps ] Successfully imported "kivy_deps.angle" 0.4.0
[INFO ] [deps ] Successfully imported "kivy_deps.glew" 0.3.1
[INFO ] [deps ] Successfully imported "kivy_deps.sdl2" 0.7.0
[INFO ] [Kivy ] v2.3.0
[INFO ] [Kivy ] Installed at "C:\Users\rick\AppData\Local\Programs\Python\Python310\lib\site-packages\kivy\__init__.py"
[INFO ] [Python ] v3.10.5 (tags/v3.10.5:f377153, Jun 6 2022, 16:14:13) [MSC v.1929 64 bit (AMD64)]
[INFO ] [Python ] Interpreter at "C:\Users\rick\AppData\Local\Programs\Python\Python310\python.exe"
[INFO ] [Logger ] Purge log fired. Processing...
[INFO ] [Logger ] Skipped file C:\Users\rick\.kivy\logs\kivy_24-04-27_47.txt, PermissionError(13, 'The process cannot access the file because it is being used by another process')
[INFO ] [Logger ] Purge finished!
[INFO ] [Factory ] 195 symbols loaded
[INFO ] [Image ] Providers: img_tex, img_dds, img_sdl2 (img_pil, img_ffpyplayer ignored)
[INFO ] [Text ] Provider: sdl2
[INFO ] [Window ] Provider: sdl2
[INFO ] [GL ] Using the "OpenGL" graphics system
[INFO ] [GL ] GLEW initialization succeeded
[INFO ] [GL ] Backend used <glew>
[INFO ] [GL ] OpenGL version <b'4.6.0 Compatibility Profile Context 22.20.27.09.230330'>
[INFO ] [GL ] OpenGL vendor <b'ATI Technologies Inc.'>
[INFO ] [GL ] OpenGL renderer <b'AMD Radeon RX 5700 XT'>
[INFO ] [GL ] OpenGL parsed version: 4, 6
[INFO ] [GL ] Shading version <b'4.60'>
[INFO ] [GL ] Texture max size <16384>
[INFO ] [GL ] Texture max units <32>
[INFO ] [Window ] auto add sdl2 input provider
[INFO ] [Window ] virtual keyboard not allowed, single mode, not docked
[WARNING] [Factory ] Ignored class "HistoryOutput" re-declaration. Current - module: None, cls: <class '__main__.HistoryOutput'>, baseclass: None, filename: None. Ignored - module: None, cls: None, baseclass: BoxLayout, filename: C:\Users\rick\PycharmProjects\cruise2cruise\test901.kv.
[INFO ] [Base ] Start application main loop
[INFO ] [GL ] NPOT texture support is available
[INFO ] [Base ] Leaving application in progress...
Traceback (most recent call last):
File "C:\Users\rick\PycharmProjects\cruise2cruise\test901.py", line 170, in <module>
game_screen = test901App().run()
File "C:\Users\rick\AppData\Local\Programs\Python\Python310\lib\site-packages\kivy\app.py", line 956, in run
runTouchApp()
File "C:\Users\rick\AppData\Local\Programs\Python\Python310\lib\site-packages\kivy\base.py", line 574, in runTouchApp
EventLoop.mainloop()
File "C:\Users\rick\AppData\Local\Programs\Python\Python310\lib\site-packages\kivy\base.py", line 341, in mainloop
self.window.mainloop()
File "C:\Users\rick\AppData\Local\Programs\Python\Python310\lib\site-packages\kivy\core\window\window_sdl2.py", line 776, in mainloop
if self.dispatch('on_key_down', key,
File "kivy\\_event.pyx", line 727, in kivy._event.EventDispatcher.dispatch
File "kivy\\_event.pyx", line 1307, in kivy._event.EventObservers.dispatch
File "kivy\\_event.pyx", line 1231, in kivy._event.EventObservers._dispatch
File "C:\Users\rick\AppData\Local\Programs\Python\Python310\lib\site-packages\kivy\core\window\__init__.py", line 163, in _on_window_key_down
return self.dispatch('on_key_down', keycode, text, modifiers)
File "kivy\\_event.pyx", line 727, in kivy._event.EventDispatcher.dispatch
File "kivy\\_event.pyx", line 1307, in kivy._event.EventObservers.dispatch
File "kivy\\_event.pyx", line 1231, in kivy._event.EventObservers._dispatch
File "C:\Users\rick\AppData\Local\Programs\Python\Python310\lib\site-packages\kivy\uix\textinput.py", line 2984, in keyboard_on_key_down
self._key_down(key)
File "C:\Users\rick\AppData\Local\Programs\Python\Python310\lib\site-packages\kivy\uix\textinput.py", line 2890, in _key_down
self.dispatch('on_text_validate')
File "kivy\\_event.pyx", line 727, in kivy._event.EventDispatcher.dispatch
File "kivy\\_event.pyx", line 1307, in kivy._event.EventObservers.dispatch
File "kivy\\_event.pyx", line 1191, in kivy._event.EventObservers._dispatch
File "C:\Users\rick\AppData\Local\Programs\Python\Python310\lib\site-packages\kivy\lang\builder.py", line 60, in custom_callback
exec(__kvlang__.co_value, idmap)
File "C:\Users\rick\PycharmProjects\cruise2cruise\test901.kv", line 117, in <module>
on_text_validate: root.gui_input(main_input.text); main_input.text=""
File "C:\Users\rick\PycharmProjects\cruise2cruise\test901.py", line 67, in gui_input
parse_cmd(cmd, quik_param)
File "C:\Users\rick\PycharmProjects\cruise2cruise\test901.py", line 155, in parse_cmd
common_print("This is line 1\nThis is line 2\nThis is line 3")
File "C:\Users\rick\PycharmProjects\cruise2cruise\test901.py", line 25, in common_print
game_screen.print_gui_output(prompt)
NameError: name 'game_screen' is not defined. Did you mean: 'GameScreen'?
step1
This is line 1
This is line 2
This is line 3
Process finished with exit code 1
将布尔GUI_MED设置为False，并将命令"t enter"输入到文本输入小部件中，我会得到以下错误跟踪:
C:\Users\rick\AppData\Local\Programs\Python\Python310\python.exe C:/Users/rick/PycharmProjects/cruise2cruise/test901.py
[INFO ] [Logger ] Record log in C:\Users\rick\.kivy\logs\kivy_24-05-02_35.txt
[INFO ] [deps ] Successfully imported "kivy_deps.angle" 0.4.0
[INFO ] [deps ] Successfully imported "kivy_deps.glew" 0.3.1
[INFO ] [deps ] Successfully imported "kivy_deps.sdl2" 0.7.0
[INFO ] [Kivy ] v2.3.0
[INFO ] [Kivy ] Installed at "C:\Users\rick\AppData\Local\Programs\Python\Python310\lib\site-packages\kivy\__init__.py"
[INFO ] [Python ] v3.10.5 (tags/v3.10.5:f377153, Jun 6 2022, 16:14:13) [MSC v.1929 64 bit (AMD64)]
[INFO ] [Python ] Interpreter at "C:\Users\rick\AppData\Local\Programs\Python\Python310\python.exe"
[INFO ] [Logger ] Purge log fired. Processing...
[INFO ] [Logger ] Skipped file C:\Users\rick\.kivy\logs\kivy_24-04-27_47.txt, PermissionError(13, 'The process cannot access the file because it is being used by another process')
[INFO ] [Logger ] Purge finished!
[INFO ] [Factory ] 195 symbols loaded
[INFO ] [Image ] Providers: img_tex, img_dds, img_sdl2 (img_pil, img_ffpyplayer ignored)
[INFO ] [Text ] Provider: sdl2
[INFO ] [Window ] Provider: sdl2
[INFO ] [GL ] Using the "OpenGL" graphics system
[INFO ] [GL ] GLEW initialization succeeded
[INFO ] [GL ] Backend used <glew>
[INFO ] [GL ] OpenGL version <b'4.6.0 Compatibility Profile Context 22.20.27.09.230330'>
[INFO ] [GL ] OpenGL vendor <b'ATI Technologies Inc.'>
[INFO ] [GL ] OpenGL renderer <b'AMD Radeon RX 5700 XT'>
[INFO ] [GL ] OpenGL parsed version: 4, 6
[INFO ] [GL ] Shading version <b'4.60'>
[INFO ] [GL ] Texture max size <16384>
[INFO ] [GL ] Texture max units <32>
[INFO ] [Window ] auto add sdl2 input provider
[INFO ] [Window ] virtual keyboard not allowed, single mode, not docked
[WARNING] [Factory ] Ignored class "HistoryOutput" re-declaration. Current - module: None, cls: <class '__main__.HistoryOutput'>, baseclass: None, filename: None. Ignored - module: None, cls: None, baseclass: BoxLayout, filename: C:\Users\rick\PycharmProjects\cruise2cruise\test901.kv.
[INFO ] [Base ] Start application main loop
[INFO ] [GL ] NPOT texture support is available
step1
This is line 1
This is line 2
This is line 3
step2
step3
[INFO ] [Base ] Leaving application in progress...
Traceback (most recent call last):
File "C:\Users\rick\PycharmProjects\cruise2cruise\test901.py", line 170, in <module>
game_screen = test901App().run()
File "C:\Users\rick\AppData\Local\Programs\Python\Python310\lib\site-packages\kivy\app.py", line 956, in run
runTouchApp()
File "C:\Users\rick\AppData\Local\Programs\Python\Python310\lib\site-packages\kivy\base.py", line 574, in runTouchApp
EventLoop.mainloop()
File "C:\Users\rick\AppData\Local\Programs\Python\Python310\lib\site-packages\kivy\base.py", line 339, in mainloop
self.idle()
File "C:\Users\rick\AppData\Local\Programs\Python\Python310\lib\site-packages\kivy\base.py", line 379, in idle
Clock.tick()
File "C:\Users\rick\AppData\Local\Programs\Python\Python310\lib\site-packages\kivy\clock.py", line 733, in tick
self.post_idle(ts, self.idle())
File "C:\Users\rick\AppData\Local\Programs\Python\Python310\lib\site-packages\kivy\clock.py", line 776, in post_idle
self._process_events()
File "kivy\\_clock.pyx", line 620, in kivy._clock.CyClockBase._process_events
File "kivy\\_clock.pyx", line 653, in kivy._clock.CyClockBase._process_events
File "kivy\\_clock.pyx", line 649, in kivy._clock.CyClockBase._process_events
File "kivy\\_clock.pyx", line 218, in kivy._clock.ClockEvent.tick
TypeError: ScrollWindow.recalc_height() takes 1 positional argument but 2 were given
Process finished with exit code 1
详情请参阅上文