我一直试图在我的GUI上更新我的进度条,但我不知道怎么做。。。我提供的代码显示了更新的进度-我也只需要这个值来更新GUI上的进度条!这是来自Qt Creator的QML文件
main.py
import os
import sys
import time
from PySide2.QtGui import QGuiApplication
from PySide2.QtQml import QQmlApplicationEngine, qmlRegisterType
from PySide2.QtCore import QObject, Slot, Signal, QTimer, QUrl, QThread
from pathlib import Path
from multiprocessing.pool import ThreadPool
class MainWindow(QObject):
def __init__(self):
QObject.__init__(self)
@Slot()
def thread_progress(self):
print("Worker")
self.worker = Worker()
self.thread = QThread()
self.worker.moveToThread(self.thread)
self.thread.start()
self.worker.run()
class Worker(QObject):
progress_value = Signal(float)
@Slot()
def run(self):
self.progress = 0
self.total = 100
for i in range(0, self.total):
self.update_progress()
def update_progress(self):
print(f"{self.progress} / {self.total}")
self.progress += 1
self.progress_value.emit(self.progress)
time.sleep(1)
if __name__ == "__main__":
app = QGuiApplication(sys.argv)
engine = QQmlApplicationEngine()
# Get Context
main = MainWindow()
engine.rootContext().setContextProperty("backend", main)
# Set App Extra Info
app.setOrganizationName("zardoss")
app.setOrganizationDomain("N/A")
engine.load(os.fspath(Path(__file__).resolve().parent / "main.qml"))
if not engine.rootObjects():
sys.exit(-1)
sys.exit(app.exec_())
main.py文件与main.qml文件连接。GUI有一个按钮、进度条和一个文本输入元素。我只关心在按下generate按钮后进度条是否填满。 按下generate按钮后,您可以从控制台中看到,1-100的值正在填充,但它没有填充进度条,因为我不确定如何填充
main.qml
import QtQuick 2.15
import QtQuick.Window 2.15
import QtQuick.Controls 2.15
import QtGraphicalEffects 1.15
import QtQuick.Shapes 1.15
Window {
id: mainWindow
width: 750
height: 500
visible: true
color: "#00000000"
// Remove title bar
flags: Qt.Window | Qt.FramelessWindowHint
// Properties
property int windowStatus: 0
property int windowMargin: 10
title: qsTr("Progress Bar")
Rectangle {
id: bg
color: "#2c313c"
border.color: "#f12c313c"
border.width: 1
anchors.left: parent.left
anchors.right: parent.right
anchors.top: parent.top
anchors.bottom: parent.bottom
anchors.rightMargin: windowMargin
anchors.leftMargin: windowMargin
anchors.bottomMargin: windowMargin
anchors.topMargin: windowMargin
z:1
Rectangle {
id: appContainer
height: 480
color: "#00000000"
anchors.left: parent.left
anchors.right: parent.right
anchors.top: parent.top
anchors.bottom: parent.bottom
anchors.rightMargin: 1
anchors.leftMargin: 1
anchors.bottomMargin: 1
anchors.topMargin: 1
Rectangle {
id: content
color: "#00000000"
anchors.left: parent.left
anchors.right: parent.right
anchors.top: topBar.bottom
anchors.bottom: parent.bottom
anchors.topMargin: 0
Button {
id: btnGenerate
x: 265
y: 44
width: 200
height: 50
text: "Generate"
anchors.verticalCenter: parent.verticalCenter
anchors.right: parent.right
anchors.horizontalCenterOffset: 0
anchors.horizontalCenter: parent.horizontalCenter
anchors.verticalCenterOffset: 165
// colorPressed: "#1e5425"
// colorMouseOver: "#42b852"
font.pointSize: 14
display: AbstractButton.TextBesideIcon
font.bold: false
// colorDefault: "#328a3f"
anchors.rightMargin: 250
onPressed: {
// backend.generate()
backend.thread_progress()
}
}
ProgressBar{
id: progressBar
x: 239
y: 64
visible: true
width: 661
height: 250
// text: "%"
anchors.verticalCenter: parent.verticalCenter
value: 0
//bgColor: "#00000/*000"
//dropShadowColor: "#20000000"
//samples: 16
anchors.verticalCenterOffset: -15
anchors.horizontalCenter: parent.horizontalCenter
}
}
}
}
DropShadow{
anchors.fill: bg
horizontalOffset: 0
verticalOffset: 0
radius: 10
samples: 16
color: "#80000000"
source:bg
z: 0
}
Connections{
target: backend
function onLinkValid(valid) {
if(valid === true) {
textField.textColor = "#00FF00"
} else {
textField.textColor = "#FF00FF"
}
}
}
}
您案例中的问题是,具有进度值的信号未连接到GUI的任何元素
在这种情况下,必须在与ProgressBar连接的、暴露于QML的类中创建一个信号,并且该信号必须接收来自工作者的信号的信息。另一方面,您不应该直接调用“run()”方法,因为它将在调用它的线程中执行,在您的情况下,该线程是主线程,因此它将阻止GUI,相反,您必须通过信号或使用QTimer间接调用它
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