[英]Can't get custom PyQt5 widget plugin to show up in Qt designer (macos)
[英]Get current value of another widget in a custom (promoted) widget in Qt Designer using PyQt5
我已经使用 Qt Designer 为我的应用程序创建了 ui。 UI 包括两个小部件。 具有不同值的下拉列表 (ComboBox),每个值代表一年 (2015, 2025, 2035) 和在地图上加载 shapefile 的自定义小部件:这是 UI 的屏幕截图(此外, 这里是 library.ui 文件):
这是我连接到 ui 的index.py文件:
import sys
from os import environ
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.uic import loadUiType
ui,_=loadUiType('library.ui')
def suppress_qt_warnings():
environ["QT_DEVICE_PIXEL_RATIO"] = "0"
environ["QT_AUTO_SCREEN_SCALE_FACTOR"] = "1"
environ["QT_SCREEN_SCALE_FACTORS"] = "1"
environ["QT_SCALE_FACTOR"] = "1"
class MainApp(QMainWindow, ui):
def __init__(self):
QMainWindow.__init__(self)
self.setupUi(self)
def main():
suppress_qt_warnings()
app=QApplication(sys.argv)
window = MainApp()
window.show()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
这是与我的自定义小部件关联的文件( leafwidget.py ):
import folium
import os.path
from PyQt5 import QtCore, QtWebEngineWidgets
from PyQt5.QtWidgets import *
import geopandas as gpd
CURRENT_DIR = os.path.dirname(os.path.realpath(__file__))
class LeafWidget (QWidget):
def __init__(self, parent=None):
QWidget.__init__(self, parent)
self.view = QtWebEngineWidgets.QWebEngineView()
shp_filename = os.path.join(CURRENT_DIR, "input", '2015_loaded_NoCC.dbf')
shp_file = gpd.read_file(shp_filename)
shp_file_json_str = shp_file.to_json()
m = folium.Map(location=[39.764075, -86.159019], zoom_start=10)
folium.GeoJson(shp_file_json_str).add_to(m)
tmp_file = QtCore.QTemporaryFile("net.html", self)
if tmp_file.open():
m.save(tmp_file.fileName())
url = QtCore.QUrl.fromLocalFile(tmp_file.fileName())
self.view.load(url)
lay = QVBoxLayout(self)
lay.addWidget(self.view)
self.show()
正如您在我的自定义小部件类 (LeafWidget) 中所见,dbf 文件的名称以年份值 (2015, 2025, 2035) 开头,后跟“_loaded_NocCC.dbf”(例如“2015_loaded_NoCC.shp”等)。
现在,我需要从下拉列表中访问选定的值(比如2025 ),然后在地图中显示相应的 shapefile ( 2025 _loaded_NoCC.shp )。
我可以在index.py 中使用self.ComboBox.currentText()轻松访问 ComboBox 的值,但是在传单小部件类 (leafwidget.py) 中,我无法访问self.ComboBox.currentText()并收到错误基本上我的班级没有属性“ComboBox”。
那么,如何在我的 LeafWidget 类中访问 ComboBox 的值?
您必须创建一个更新将显示的 shapefile 的方法,并在每次选择新选项生成新路径时调用该方法:
import folium
from PyQt5 import QtCore, QtWebEngineWidgets
from PyQt5.QtWidgets import *
import geopandas as gpd
class LeafWidget(QWidget):
def __init__(self, parent=None):
QWidget.__init__(self, parent)
self.view = QtWebEngineWidgets.QWebEngineView()
lay = QVBoxLayout(self)
lay.addWidget(self.view)
self.tmp_file = QtCore.QTemporaryFile("XXXXXX.html")
def set_shapefile(self, filename):
shp_file = gpd.read_file(filename)
shp_file_json_str = shp_file.to_json()
m = folium.Map(location=[39.764075, -86.159019], zoom_start=10)
folium.GeoJson(shp_file_json_str).add_to(m)
if self.tmp_file.open():
m.save(self.tmp_file.fileName())
url = QtCore.QUrl.fromLocalFile(self.tmp_file.fileName())
self.view.load(url)
import sys
import os.path
from os import environ
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.uic import loadUiType
CURRENT_DIR = os.path.dirname(os.path.realpath(__file__))
ui, _ = loadUiType(os.path.join(CURRENT_DIR, "library.ui"))
def suppress_qt_warnings():
environ["QT_DEVICE_PIXEL_RATIO"] = "0"
environ["QT_AUTO_SCREEN_SCALE_FACTOR"] = "1"
environ["QT_SCREEN_SCALE_FACTORS"] = "1"
environ["QT_SCALE_FACTOR"] = "1"
class MainApp(QMainWindow, ui):
def __init__(self):
QMainWindow.__init__(self)
self.setupUi(self)
self.comboBox.currentTextChanged.connect(self.handle_currentTextChanged)
self.handle_currentTextChanged(self.comboBox.currentText())
def handle_currentTextChanged(self, text):
filename = shp_filename = os.path.join(
CURRENT_DIR, "input", "{}_loaded_NoCC.shp".format(text)
)
self.LeafWidget.set_shapefile(filename)
def main():
suppress_qt_warnings()
app = QApplication(sys.argv)
window = MainApp()
window.show()
sys.exit(app.exec_())
if __name__ == "__main__":
main()
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