howto: main.py, new class with code for kivy carousel, kv 文件
howto: main.py, new class with code for kivy carousel, kv file
我正在适配kivy的showcase-Dashboard。主要是kv文件，通过screenmanager定义一个单独的screen。
我的目标是创建一个屏幕 (DiashowApp)，启动 kivy 应用轮播 (https://kivy.org/doc/stable/api-kivy.uix.carousel.html)。因此，我设置了两个 类，加载轮播并显示图像，这些图像在 kv 文件 (diashowapp.kv) 中定义。
请帮我获取代码 运行ning。
问候
斯特凡
不要得到 类 运行，带有打印语句的调试例程告诉我，没有执行两个新 类 的代码。
from time import time
from kivy.app import App
from os.path import dirname, join
from kivy.lang import Builder
from kivy.properties import NumericProperty, StringProperty, BooleanProperty,\
ListProperty
from kivy.clock import Clock
from kivy.animation import Animation
from kivy.uix.screenmanager import Screen
from kivy.uix.carousel import Carousel
from kivy.uix.image import AsyncImage
from subprocess import call
import subprocess
from kivy.logger import Logger
import random
Logger.info('title: This is a info message.')
Logger.debug('title: This is a debug message.')
skript_axis_all = "data/screens_axis.sh"
skript_kill_axis = "data/screens_kill_axis.sh"
skript_axis_01 = "data/screens_axis01.sh"
skript_axis_02 = "data/screens_axis02.sh"
skript_axis_03 = "data/screens_axis03.sh"
skript_axis_04 = "data/screens_axis04.sh"
class CarouselApp(Carousel):
def __init__(self, **kwargs):
super(CarouselApp, self).__init__(**kwargs)
self.direction = "right"
bilderliste = []
cmd2 = ['find', '/home/pi/Bilder/', '-maxdepth', '2', '-type', 'f', '-name', '*.JPG']
proc2 = subprocess.Popen(cmd2, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
o2, e2 = proc2.communicate()
#print('Output: ' + o2.decode('utf-8'))
#print('Error: ' + e2.decode('utf-8'))
#print('code: ' + str(proc2.returncode))
o2_zeilen = o2.split('\n')
counter = 0
for zeile2 in o2_zeilen:
bilderliste.append(zeile2.replace('\n',''))
random.shuffle(bilderliste, random.random)
for bildpfad in bilderliste:
if counter < 50:
counter = counter + 1
print(counter)
src = "%s" % bildpfad
print type(bildpfad)
if bildpfad is not None:
print('Bildpfad ist: %s') % src
image = AsyncImage(source = src, keep_ratio = True, allow_stretch = True)
try:
self.add_widget(image)
except Exception:
Logger.exception('Something happened in the add.widget!')
else:
pass
self.loop = True
Clock.schedule_interval(self.load_next, 5)
#print(self.slides)
class ShowcaseScreen(Screen):
fullscreen = BooleanProperty(False)
def add_widget(self, *args):
if 'content' in self.ids:
return self.ids.content.add_widget(*args)
return super(ShowcaseScreen, self).add_widget(*args)
class ShowcaseApp(App):
index = NumericProperty(-1)
current_title = StringProperty()
time = NumericProperty(0)
show_sourcecode = BooleanProperty(False)
sourcecode = StringProperty()
screen_names = ListProperty([])
hierarchy = ListProperty([])
def build(self):
self.title = 'hello world'
Clock.schedule_interval(self._update_clock, 1 / 60.)
self.screens = {}
self.available_screens = sorted([
'CarouselApp', 'Carousel', 'Scatter', 'Cameras'])
self.screen_names = self.available_screens
curdir = dirname(__file__)
self.available_screens = [join(curdir, 'data', 'screens',
'{}.kv'.format(fn).lower()) for fn in self.available_screens]
self.go_next_screen()
carouselapp.kv
ShowcaseScreen:
name: 'CarouselApp'
fullscreen: True
CarouselApp:
预计：
一个显示，自动旋转。
实际：
图片显示正确，手动滑动正确。
欢迎来到 SO :)
我不会修复你的代码。但是，如果您举个例子，您会再次链接到：kivy carousel。
如果你想要一个自动轮播，那么你可以使用 kivy 的 Clock 来安排轮播之间的间隔为 2 秒。
试试这个：（编辑：在 kv 的屏幕中实现）
from kivy.app import App
from kivy.uix.carousel import Carousel
from kivy.uix.image import AsyncImage
from kivy.clock import Clock
from kivy.lang import Builder
class MyCarousel(Carousel):
def __init__(self, **kwargs):
super(MyCarousel, self).__init__(**kwargs)
self.direction = "right"
for i in range(10):
src = "http://placehold.it/480x270.png&text=slide-%d&.png" % i
image = AsyncImage(source=src, allow_stretch=True)
self.add_widget(image)
self.loop = True
Clock.schedule_interval(self.load_next,2)
KV = """
ScreenManager:
Screen:
name: "scr1"
BoxLayout:
Button:
text: "Carousel"
on_release: root.current = "scr2"
Screen:
name: "scr2"
BoxLayout:
Button:
text: "Back"
on_release: root.current = "scr1"
MyCarousel:
"""
class CarouselApp(App):
def build(self):
return Builder.load_string(KV)
CarouselApp().run()
@el3ien
提前谢谢你。你是个好人，带我走上理解的道路。
:-)
在我进一步集成 sreenmanager 之前，我尝试调整你给我的代码。
这里我 运行 遇到了一个问题，到目前为止我无法调试。我实现了一个带有文件路径的列表的创建。我遍历该列表，但无法加载该文件。是否有限制，asyncimage 源必须在目录中，main.py 存在吗？
此致！
斯特凡
from kivy.app import App
from kivy.uix.carousel import Carousel
from kivy.uix.image import AsyncImage
from kivy.clock import Clock
from subprocess import call
import subprocess
class CarouselApp(App):
def build(self):
carousel = Carousel(direction='right')
bilderdirliste = []
bilderliste = []
cmd2 = ['find', '/photo/imac-Backup/', '-maxdepth', '2', '-type', 'f', '-name', '*.JPG']
proc2 = subprocess.Popen(cmd2, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
o2, e2 = proc2.communicate()
print('Output: ' + o2.decode('utf-8'))
print('Error: ' + e2.decode('utf-8'))
print('code: ' + str(proc2.returncode))
o2_zeilen = o2.split('\n')
counter = 0
for zeile2 in o2_zeilen:
bilderliste.append(zeile2.replace('\n','').replace(' ','\ '))
for bildpfad in bilderliste:
if counter < 10:
counter = counter + 1
print(counter)
src = "%s" % bildpfad
print('Bildpfad ist: %s') % src
image = AsyncImage(source = src, keep_ratio=True)
carousel.add_widget(image)
carousel.loop = True
Clock.schedule_interval(carousel.load_next, 3)
print(carousel.index)
return carousel
CarouselApp().run()
控制台输出为：
...
/photo/imac-Backup/4. März 2014/IMG_1704.JPG
/photo/imac-Backup/29. März 2012/IMG_0100.JPG
/photo/imac-Backup/25. September 2014/IMG_3018.JPG
/photo/imac-Backup/25. September 2014/IMG_3017.JPG
/photo/imac-Backup/25. September 2014/IMG_3015.JPG
/photo/imac-Backup/25. September 2014/IMG_3016.JPG
/photo/imac-Backup/25. September 2014/IMG_3019.JPG
/photo/imac-Backup/18. Mai 2015/IMG_3966.JPG
/photo/imac-Backup/18. Mai 2015/IMG_3965.JPG
/photo/imac-Backup/7. Mai 2013/IMG_0843.JPG
/photo/imac-Backup/1. Oktober 2016/IMG_6076.JPG
/photo/imac-Backup/1. Oktober 2016/IMG_6077.JPG
Error:
code: 0
1
Bildpfad ist: /photo/imac-Backup/13.\ Juni\ 2014/IMG_2484.JPG
[INFO ] [Loader ] using a thread pool of 2 workers
2
Bildpfad ist: /photo/imac-Backup/13.\ Juni\ 2014/IMG_2483.JPG
3
Bildpfad ist: /photo/imac-Backup/9.\ August\ 2015/IMG_4254.JPG
4
Bildpfad ist: /photo/imac-Backup/8.\ Dezember\ 2016/IMG_6187.JPG
5
Bildpfad ist: /photo/imac-Backup/3.\ Januar\ 2013/IMG_0643.JPG
0
Unable to connect to X server
[INFO ] [ProbeSysfs ] device match: /dev/input/event1
[INFO ] [MTD ] Read event from </dev/input/event1>
[INFO ] [ProbeSysfs ] device match: /dev/input/event0
[INFO ] [MTD ] Read event from </dev/input/event0>
[INFO ] [ProbeSysfs ] device match: /dev/input/event1
[INFO ] [HIDInput ] Read event from </dev/input/event1>
[INFO ] [ProbeSysfs ] device match: /dev/input/event0
[INFO ] [HIDInput ] Read event from </dev/input/event0>
[INFO ] [Base ] Start application main loop
[INFO ] [MTD ] </dev/input/event1> range position X is 0 - 4095
[INFO ] [MTD ] </dev/input/event0> range position X is 0 - 0
[INFO ] [MTD ] </dev/input/event1> range position Y is 0 - 4095
[INFO ] [HIDMotionEvent] using <USBest Technology SiS HID Touch Controller>
[INFO ] [MTD ] </dev/input/event0> range position Y is 0 - 0
[INFO ] [MTD ] </dev/input/event1> range touch major is 0 - 0
[INFO ] [HIDMotionEvent] <USBest Technology SiS HID Touch Controller> range ABS X position is 0 - 4095
[INFO ] [MTD ] </dev/input/event0> range touch major is 0 - 0
[INFO ] [MTD ] </dev/input/event1> range touch minor is 0 - 0
[INFO ] [MTD ] </dev/input/event0> range touch minor is 0 - 0
[INFO ] [HIDMotionEvent] <USBest Technology SiS HID Touch Controller> range ABS Y position is 0 - 4095
[INFO ] [HIDMotionEvent] using <PC Camera: PC Camera>
[INFO ] [MTD ] </dev/input/event1> range pressure is 0 - 255
[INFO ] [MTD ] </dev/input/event0> range pressure is 0 - 255
[INFO ] [HIDMotionEvent] <USBest Technology SiS HID Touch Controller> range position X is 0 - 4095
[INFO ] [MTD ] </dev/input/event1> axes invertion: X is 0, Y is 0
[INFO ] [MTD ] </dev/input/event0> axes invertion: X is 0, Y is 0
[INFO ] [HIDMotionEvent] <USBest Technology SiS HID Touch Controller> range position Y is 0 - 4095
[INFO ] [MTD ] </dev/input/event1> rotation set to 0
[INFO ] [MTD ] </dev/input/event0> rotation set to 0
显示的是带有运动图标（向左画圈点）的黑屏，就像一个进度条。
我正在适配kivy的showcase-Dashboard。主要是kv文件，通过screenmanager定义一个单独的screen。
我的目标是创建一个屏幕 (DiashowApp)，启动 kivy 应用轮播 (https://kivy.org/doc/stable/api-kivy.uix.carousel.html)。因此，我设置了两个 类，加载轮播并显示图像，这些图像在 kv 文件 (diashowapp.kv) 中定义。
请帮我获取代码 运行ning。
问候 斯特凡
不要得到 类 运行，带有打印语句的调试例程告诉我，没有执行两个新 类 的代码。
from time import time
from kivy.app import App
from os.path import dirname, join
from kivy.lang import Builder
from kivy.properties import NumericProperty, StringProperty, BooleanProperty,\
ListProperty
from kivy.clock import Clock
from kivy.animation import Animation
from kivy.uix.screenmanager import Screen
from kivy.uix.carousel import Carousel
from kivy.uix.image import AsyncImage
from subprocess import call
import subprocess
from kivy.logger import Logger
import random
Logger.info('title: This is a info message.')
Logger.debug('title: This is a debug message.')
skript_axis_all = "data/screens_axis.sh"
skript_kill_axis = "data/screens_kill_axis.sh"
skript_axis_01 = "data/screens_axis01.sh"
skript_axis_02 = "data/screens_axis02.sh"
skript_axis_03 = "data/screens_axis03.sh"
skript_axis_04 = "data/screens_axis04.sh"
class CarouselApp(Carousel):
def __init__(self, **kwargs):
super(CarouselApp, self).__init__(**kwargs)
self.direction = "right"
bilderliste = []
cmd2 = ['find', '/home/pi/Bilder/', '-maxdepth', '2', '-type', 'f', '-name', '*.JPG']
proc2 = subprocess.Popen(cmd2, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
o2, e2 = proc2.communicate()
#print('Output: ' + o2.decode('utf-8'))
#print('Error: ' + e2.decode('utf-8'))
#print('code: ' + str(proc2.returncode))
o2_zeilen = o2.split('\n')
counter = 0
for zeile2 in o2_zeilen:
bilderliste.append(zeile2.replace('\n',''))
random.shuffle(bilderliste, random.random)
for bildpfad in bilderliste:
if counter < 50:
counter = counter + 1
print(counter)
src = "%s" % bildpfad
print type(bildpfad)
if bildpfad is not None:
print('Bildpfad ist: %s') % src
image = AsyncImage(source = src, keep_ratio = True, allow_stretch = True)
try:
self.add_widget(image)
except Exception:
Logger.exception('Something happened in the add.widget!')
else:
pass
self.loop = True
Clock.schedule_interval(self.load_next, 5)
#print(self.slides)
class ShowcaseScreen(Screen):
fullscreen = BooleanProperty(False)
def add_widget(self, *args):
if 'content' in self.ids:
return self.ids.content.add_widget(*args)
return super(ShowcaseScreen, self).add_widget(*args)
class ShowcaseApp(App):
index = NumericProperty(-1)
current_title = StringProperty()
time = NumericProperty(0)
show_sourcecode = BooleanProperty(False)
sourcecode = StringProperty()
screen_names = ListProperty([])
hierarchy = ListProperty([])
def build(self):
self.title = 'hello world'
Clock.schedule_interval(self._update_clock, 1 / 60.)
self.screens = {}
self.available_screens = sorted([
'CarouselApp', 'Carousel', 'Scatter', 'Cameras'])
self.screen_names = self.available_screens
curdir = dirname(__file__)
self.available_screens = [join(curdir, 'data', 'screens',
'{}.kv'.format(fn).lower()) for fn in self.available_screens]
self.go_next_screen()
carouselapp.kv
ShowcaseScreen:
name: 'CarouselApp'
fullscreen: True
CarouselApp:
预计： 一个显示，自动旋转。
实际： 图片显示正确，手动滑动正确。
欢迎来到 SO :)
我不会修复你的代码。但是，如果您举个例子，您会再次链接到：kivy carousel。
如果你想要一个自动轮播，那么你可以使用 kivy 的 Clock 来安排轮播之间的间隔为 2 秒。
试试这个：（编辑：在 kv 的屏幕中实现）
from kivy.app import App
from kivy.uix.carousel import Carousel
from kivy.uix.image import AsyncImage
from kivy.clock import Clock
from kivy.lang import Builder
class MyCarousel(Carousel):
def __init__(self, **kwargs):
super(MyCarousel, self).__init__(**kwargs)
self.direction = "right"
for i in range(10):
src = "http://placehold.it/480x270.png&text=slide-%d&.png" % i
image = AsyncImage(source=src, allow_stretch=True)
self.add_widget(image)
self.loop = True
Clock.schedule_interval(self.load_next,2)
KV = """
ScreenManager:
Screen:
name: "scr1"
BoxLayout:
Button:
text: "Carousel"
on_release: root.current = "scr2"
Screen:
name: "scr2"
BoxLayout:
Button:
text: "Back"
on_release: root.current = "scr1"
MyCarousel:
"""
class CarouselApp(App):
def build(self):
return Builder.load_string(KV)
CarouselApp().run()
@el3ien 提前谢谢你。你是个好人，带我走上理解的道路。 :-) 在我进一步集成 sreenmanager 之前，我尝试调整你给我的代码。
这里我 运行 遇到了一个问题，到目前为止我无法调试。我实现了一个带有文件路径的列表的创建。我遍历该列表，但无法加载该文件。是否有限制，asyncimage 源必须在目录中，main.py 存在吗？
此致！ 斯特凡
from kivy.app import App
from kivy.uix.carousel import Carousel
from kivy.uix.image import AsyncImage
from kivy.clock import Clock
from subprocess import call
import subprocess
class CarouselApp(App):
def build(self):
carousel = Carousel(direction='right')
bilderdirliste = []
bilderliste = []
cmd2 = ['find', '/photo/imac-Backup/', '-maxdepth', '2', '-type', 'f', '-name', '*.JPG']
proc2 = subprocess.Popen(cmd2, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
o2, e2 = proc2.communicate()
print('Output: ' + o2.decode('utf-8'))
print('Error: ' + e2.decode('utf-8'))
print('code: ' + str(proc2.returncode))
o2_zeilen = o2.split('\n')
counter = 0
for zeile2 in o2_zeilen:
bilderliste.append(zeile2.replace('\n','').replace(' ','\ '))
for bildpfad in bilderliste:
if counter < 10:
counter = counter + 1
print(counter)
src = "%s" % bildpfad
print('Bildpfad ist: %s') % src
image = AsyncImage(source = src, keep_ratio=True)
carousel.add_widget(image)
carousel.loop = True
Clock.schedule_interval(carousel.load_next, 3)
print(carousel.index)
return carousel
CarouselApp().run()
控制台输出为：
...
/photo/imac-Backup/4. März 2014/IMG_1704.JPG
/photo/imac-Backup/29. März 2012/IMG_0100.JPG
/photo/imac-Backup/25. September 2014/IMG_3018.JPG
/photo/imac-Backup/25. September 2014/IMG_3017.JPG
/photo/imac-Backup/25. September 2014/IMG_3015.JPG
/photo/imac-Backup/25. September 2014/IMG_3016.JPG
/photo/imac-Backup/25. September 2014/IMG_3019.JPG
/photo/imac-Backup/18. Mai 2015/IMG_3966.JPG
/photo/imac-Backup/18. Mai 2015/IMG_3965.JPG
/photo/imac-Backup/7. Mai 2013/IMG_0843.JPG
/photo/imac-Backup/1. Oktober 2016/IMG_6076.JPG
/photo/imac-Backup/1. Oktober 2016/IMG_6077.JPG
Error:
code: 0
1
Bildpfad ist: /photo/imac-Backup/13.\ Juni\ 2014/IMG_2484.JPG
[INFO ] [Loader ] using a thread pool of 2 workers
2
Bildpfad ist: /photo/imac-Backup/13.\ Juni\ 2014/IMG_2483.JPG
3
Bildpfad ist: /photo/imac-Backup/9.\ August\ 2015/IMG_4254.JPG
4
Bildpfad ist: /photo/imac-Backup/8.\ Dezember\ 2016/IMG_6187.JPG
5
Bildpfad ist: /photo/imac-Backup/3.\ Januar\ 2013/IMG_0643.JPG
0
Unable to connect to X server
[INFO ] [ProbeSysfs ] device match: /dev/input/event1
[INFO ] [MTD ] Read event from </dev/input/event1>
[INFO ] [ProbeSysfs ] device match: /dev/input/event0
[INFO ] [MTD ] Read event from </dev/input/event0>
[INFO ] [ProbeSysfs ] device match: /dev/input/event1
[INFO ] [HIDInput ] Read event from </dev/input/event1>
[INFO ] [ProbeSysfs ] device match: /dev/input/event0
[INFO ] [HIDInput ] Read event from </dev/input/event0>
[INFO ] [Base ] Start application main loop
[INFO ] [MTD ] </dev/input/event1> range position X is 0 - 4095
[INFO ] [MTD ] </dev/input/event0> range position X is 0 - 0
[INFO ] [MTD ] </dev/input/event1> range position Y is 0 - 4095
[INFO ] [HIDMotionEvent] using <USBest Technology SiS HID Touch Controller>
[INFO ] [MTD ] </dev/input/event0> range position Y is 0 - 0
[INFO ] [MTD ] </dev/input/event1> range touch major is 0 - 0
[INFO ] [HIDMotionEvent] <USBest Technology SiS HID Touch Controller> range ABS X position is 0 - 4095
[INFO ] [MTD ] </dev/input/event0> range touch major is 0 - 0
[INFO ] [MTD ] </dev/input/event1> range touch minor is 0 - 0
[INFO ] [MTD ] </dev/input/event0> range touch minor is 0 - 0
[INFO ] [HIDMotionEvent] <USBest Technology SiS HID Touch Controller> range ABS Y position is 0 - 4095
[INFO ] [HIDMotionEvent] using <PC Camera: PC Camera>
[INFO ] [MTD ] </dev/input/event1> range pressure is 0 - 255
[INFO ] [MTD ] </dev/input/event0> range pressure is 0 - 255
[INFO ] [HIDMotionEvent] <USBest Technology SiS HID Touch Controller> range position X is 0 - 4095
[INFO ] [MTD ] </dev/input/event1> axes invertion: X is 0, Y is 0
[INFO ] [MTD ] </dev/input/event0> axes invertion: X is 0, Y is 0
[INFO ] [HIDMotionEvent] <USBest Technology SiS HID Touch Controller> range position Y is 0 - 4095
[INFO ] [MTD ] </dev/input/event1> rotation set to 0
[INFO ] [MTD ] </dev/input/event0> rotation set to 0
显示的是带有运动图标（向左画圈点）的黑屏，就像一个进度条。