如何设置用于vispy的小部件

Question

我知道这个问题是以几种方式提出的，但我无法在我的具体用例中找到答案。我使用(pyQT 5.15)创建布局，并希望使用vispy作为显示。在阅读完之后，我似乎不得不设置一个小部件，但我仍然不清楚如何设置。这就是我所拥有的，我试图有一个简单的例子，通过计时器将颜色从黑色更改为白色。没有错误，但也没有可视化。

下面是转换为Python的GUI.ui，名为GUI.py

from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_Dialog(object):
    def setupUi(self, Dialog):
        Dialog.setObjectName("Dialog")
        Dialog.resize(702, 603)
        self.vispy_widget = QtWidgets.QWidget(Dialog)
        self.vispy_widget.setGeometry(QtCore.QRect(150, 20, 531, 531))
        self.vispy_widget.setObjectName("vispy_widget")
        self.pushButton = QtWidgets.QPushButton(Dialog)
        self.pushButton.setGeometry(QtCore.QRect(580, 560, 75, 23))
        self.pushButton.setObjectName("pushButton")
        self.horizontalScrollBar = QtWidgets.QScrollBar(Dialog)
        self.horizontalScrollBar.setGeometry(QtCore.QRect(160, 560, 401, 20))
        self.horizontalScrollBar.setOrientation(QtCore.Qt.Horizontal)
        self.horizontalScrollBar.setObjectName("horizontalScrollBar")
        self.horizontalSlider = QtWidgets.QSlider(Dialog)
        self.horizontalSlider.setGeometry(QtCore.QRect(20, 60, 111, 16))
        self.horizontalSlider.setOrientation(QtCore.Qt.Horizontal)
        self.horizontalSlider.setObjectName("horizontalSlider")
        self.hist_widget = QtWidgets.QWidget(Dialog)
        self.hist_widget.setGeometry(QtCore.QRect(20, 90, 120, 80))
        self.hist_widget.setObjectName("hist_widget")

        self.retranslateUi(Dialog)
        QtCore.QMetaObject.connectSlotsByName(Dialog)

    def retranslateUi(self, Dialog):
        _translate = QtCore.QCoreApplication.translate
        Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
        self.pushButton.setText(_translate("Dialog", "PushButton"))


if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    Dialog = QtWidgets.QDialog()
    ui = Ui_Dialog()
    ui.setupUi(Dialog)
    Dialog.show()
    sys.exit(app.exec_())

Here is the app part:

```javascript

import sys

from vispy import gloo, app

from gui import Ui_Dialog

from PyQt5 import QtWidgets

app.use_app('pyqt5')

class Canvas(app.Canvas):

    def __init__(self, *args, **kwargs):

        app.Canvas.__init__(self, *args, **kwargs)

        self._timer = app.Timer('auto', connect=self.on_timer, start=True)

        self.tick = 0

    def on_draw(self, event):

        gloo.clear(color=True)

    def on_timer(self, event):

        self.tick += 1 / 60.0

        c = abs(math.sin(self.tick))

        gloo.set_clear_color((c, c, c, 1))

        self.update()

class myWindow(QtWidgets.QMainWindow):

    def __init__(self):

        super(myWindow, self).__init__()

        self.ui = Ui_Dialog()

        self.ui.setupUi(self)

        canvas = Canvas()

        self.ui.vispy_widget(canvas.native)

if __name__ == "__main__":

    gui = QtWidgets.QApplication(sys.argv)

    Dialog = QtWidgets.QDialog()

    ui = Ui_Dialog()

    ui.setupUi(Dialog)

    Dialog.show()

    app.run()

    #sys.exit(app.exec_())

Answer 1

有以下错误：

• self.ui.vispy_widget(canvas.native)命令没有意义，其思想是使用vispy_widget作为一个容器，用于可以通过布局放置的本地vispy小部件。

• 选择.ui表单用于确定基类，在您的情况下，您应该使用QDialog而不是QMainWindow.

。

如果您已经在小部件中设置了if __name__ == "__main__":.，那么就没有必要在中实现相同的Ui_Dialog。

• 您必须导入math模块.

import math
import sys

from vispy import gloo, app

from PyQt5 import QtWidgets

from gui import Ui_Dialog

app.use_app("pyqt5")


class Canvas(app.Canvas):
    def __init__(self, *args, **kwargs):
        app.Canvas.__init__(self, *args, **kwargs)
        self._timer = app.Timer("auto", connect=self.on_timer, start=True)
        self.tick = 0

    def on_draw(self, event):
        gloo.clear(color=True)

    def on_timer(self, event):
        self.tick += 1 / 60.0
        c = abs(math.sin(self.tick))
        gloo.set_clear_color((c, c, c, 1))
        self.update()


class MyWindow(QtWidgets.QDialog):
    def __init__(self):
        super(MyWindow, self).__init__()
        self.ui = Ui_Dialog()
        self.ui.setupUi(self)

        self.canvas = Canvas()

        lay = QtWidgets.QVBoxLayout(self.ui.vispy_widget)
        lay.addWidget(self.canvas.native)


if __name__ == "__main__":
    gui = QtWidgets.QApplication(sys.argv)
    w = MyWindow()
    w.show()
    app.run()