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我正在开发游戏,它是用 qml 和 pyqt 编写的,但应该分为两个窗口(启动器 + 游戏)。在这两个 qml 文件之间切换的正确方法是什么?我不想使用 QmlLoader,因为它不会调整窗口大小而且它需要很多信号!我也在尝试这个变体:

view.engine().clearComponentCache()
view.setSource(source())

但它没有工作(qml 窗口停止工作...... -经典窗口错误,但是在 pycharm 控制台中没有写入错误)

我的代码如下所示:

from PyQt5.QtCore import pyqtProperty, QRectF, QUrl, QObject, pyqtSignal, pyqtSlot, QVariant
from PyQt5.QtGui import QColor, QGuiApplication, QPainter, QPen
from PyQt5.QtQml import qmlRegisterType
from PyQt5.QtQuick import QQuickItem, QQuickPaintedItem, QQuickView
from PyQt5 import QtNetwork as QN
from PyQt5 import QtCore as QC

from multiprocessing import Process
import server as S
import client as C
from time import time, sleep


class Launcher(QQuickItem):
    PORTS = (9998, 9999)
    PORT = 9999
    SIZEOF_UINT32 = 4

    changeUI = pyqtSignal()
    changeName= pyqtSignal(int, str)
    connection= pyqtSignal(int, bool)
    connected= pyqtSignal(QVariant)


    @pyqtSlot(name="startGame")
    def start_game(self):
        #app.exit()
        startGame()
        print ("startGame")

    @pyqtProperty(str)
    def name(self):
        print ("return name")
        return self._name

    @name.setter
    def name(self, n):
        print ("set name")
        self._name= n


    @pyqtSlot(name= "terminate")
    def terminate_server(self):
        if not self.server: return
        self.server.terminate()     #Bye
        self.server.join()
        #self.bstopServer.setEnabled(False)
        #self.bserver.setEnabled(True)
        self.server = None

    @pyqtSlot()
    def _quit(self):
        if self.server:
            self.server.terminate()     #Bye
            self.server.join()
        app.exit()

    @pyqtSlot()
    def back(self):
        self.client.disconnect()


    def __init__(self, parent=None):
        super(Launcher, self).__init__(parent)

        self.socket= QN.QTcpSocket()        #Yeah, the game will be over internet
        self.server = None
        self.client = None                  #client is a QObject

        self._turnedOn = False
        self._players = 1
        self._name = "YourName"


class Game(QQuickItem):
    def __init__(self, parent= None):
        super(Game, self).__init__(parent)

        self.client = True      #I should get the client from the launcher, but I don´t know how


def startGame():
    view.engine().clearComponentCache()
    view.setResizeMode(QQuickView.SizeViewToRootObject)
    view.showFullScreen()
    view.setSource(
            QUrl.fromLocalFile(
                    os.path.join(os.path.dirname(__file__),'Game.qml')))
    view.show()
    #app.exec_()

def startLauncher():
    view.engine().clearComponentCache()
    view.setResizeMode(QQuickView.SizeViewToRootObject)
    view.setSource(
            QUrl.fromLocalFile(
                    os.path.join(os.path.dirname(__file__),'Launcher.qml')))


    view.show()

    app.exec_()

if __name__ == '__main__':
    import os
    import sys

    app = QGuiApplication(sys.argv)

    qmlRegisterType(Launcher, "ParanoiaLauncher", 1, 0, "App")
    qmlRegisterType(Game, "ParanoiaGame", 1, 0, "App")

    view = QQuickView()

    startLauncher()

如您所见,我的结构有点混乱,因为我是第一次做这种切换行为,所以我真的不知道应该如何正确地做......欢迎每一个建议!:)

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1 回答 1

2

我不得不在同一时间面对同样的问题。QQuickView而是一次又一次地使用相同的组件加载相同的组件,我在 QML 中创建了一个组件作为内容容器,并将所需的组件加载为它的子组件。每次设置新组件时,我们都会销毁当前组件并再次将新组件设置为子组件。

// ContentFrame.qml
Item{
    width: 800
    height: 600
    Item{
        id: contentContainer
        anchors.fill: parent
        anchors.margins: 4
    }
}

首先,请原谅我,但功能代码是用 C++ 编写的,但我认为这个概念是可以理解的。我做了一个简化版本的过程,我希望它可以移植到 python。

为了加载 ContentFrame 组件,我使用了一个派生自 QQuickView (ViewManager) 的类,它有一个名为 setView 的方法。此方法加载一个组件(在您的情况下为 Launcher 或 Game),将其设置为子contentContainer组件并将其设置anchor.fill为填充整个父组件。

ViewManager::ViewManager() :  QQuickView("ContentFrame.qml")
{
    // More ctor code
}

 // Other stuff

void ViewManager::setView(const QString &filename)
{
    QQuickItem *mostTopItem = rootObject(); //QQuickView::rootObject() method
    QQuickItem *contentItem->findChild<QQuickItem*>("contentContainer");
    if(m_current != NULL)
    {
        m_current->setProperty("visible", false);
    }

    // Call a method to load the component and create an instance of it
    QQuickItem *newItem = createOurComponentFromFile(filename);

    newItem->setProperty("parent", QVariant::fromValue<QObject*>(contentItem));

    // When "delete item" in C++, the object will be destroyed in QQmlEngine
    // in pyqt???
    QQmlEngine::setObjectOwnership(newItem, QQmlEngine::CppOwnership);

    newItem->setProperty("anchors.fill", QVariant::fromValue<QObject*>(contentItem));

    // Cleanup current object
    if(m_current != NULL)
    {
        delete m_current;
    }
    m_current = newItem;
}

还有更多代码,但 ViewManager 的核心是这个方法。我不在QQmlEngine::clearComponentCache()这里打电话,因为我不止一次加载相同的组件,但在你的情况下,这可能是个好主意。

于 2015-01-16T08:15:37.700 回答