主页 / user-500552

The Unurin's questions

Martin Hope
The Unurin
Asked: 2024-09-29 19:23:34 +0000 UTC
  • 6

我正在PySide6中编写一个程序，我创建了一个“窗帘”，当您按下按钮时它会改变其大小。

问题在于，当Dropdown()处于折叠位置时，按钮会相互重叠。

我们如何固定它们相对于窗口的位置，以便在最小高度时，只显示一个顶部按钮？

from PySide6.QtCore import Qt, QPropertyAnimation, Property, QEasingCurve
from PySide6.QtWidgets import (
    QApplication,
    QMainWindow,
    QVBoxLayout,
    QPushButton,
    QFrame,
)


class Dropdown(QFrame):
    def __init__(self):
        super().__init__()
        self.isMin = False
        self.setFixedSize(300, 135)
        self.setStyleSheet("background-color: white;")

        button = QPushButton("Свернуть/развернуть")
        button.setStyleSheet("background: red;")
        button.setFixedHeight(25)
        button.clicked.connect(self.anim)

        layout = QVBoxLayout()
        layout.setAlignment(Qt.AlignmentFlag.AlignTop)
        layout.addWidget(button)
        for i in range(3):
            btn = QPushButton(f"Button {i}")
            btn.setFixedHeight(25)
            btn.setStyleSheet("background-color: blue;")
            layout.addWidget(btn)
        self.setLayout(layout)

        self.animation = QPropertyAnimation(self, b"Height")
        self.animation.setDuration(300)

    def anim(self):
        if self.isMin:
            self.animation.setStartValue(self.height())
            self.animation.setEndValue(135)
            self.isMin = False
        else:
            self.animation.setStartValue(self.height())
            self.animation.setEndValue(40)
            self.isMin = True
        self.animation.start()

    def setMinHeight(self, height):
        self.setFixedHeight(height)

    def getMinHeight(self):
        return self.height()

    Height = Property(int, getMinHeight, setMinHeight)


if __name__ == "__main__":
    app = QApplication()
    w = QMainWindow()
    w.setCentralWidget(Dropdown())
    w.show()
    app.exec()
python
Martin Hope
The Unurin
Asked: 2024-03-05 00:39:54 +0000 UTC
  • 5

当我尝试使用滑块信号更改matplotlib条形图的高度时，没有任何反应。

主要.py：

import sys
from PyQt6.QtWidgets import QApplication, QMainWindow, QHBoxLayout, QSlider, QWidget
import matplotlib
import matplotlib.pyplot as plt
matplotlib.use('qt5agg')
from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg


class Canvas(FigureCanvasQTAgg):
    def __init__(self):
        fig = plt.figure()
        self.ax = fig.add_subplot()
        super(Canvas, self).__init__(fig)


class Window(QMainWindow):
    def __init__(self):
        super().__init__()

        self.slider = QSlider()
        self.slider.valueChanged.connect(self.move_slider)

        self.canva = Canvas()
        self.bar = self.canva.ax.bar(0, 99)
        
        layout = QHBoxLayout()
        layout.addWidget(self.canva)
        layout.addWidget(self.slider)
        
        cont = QWidget()
        cont.setLayout(layout)

        self.setCentralWidget(cont)

        # self.bar[0].set_height(1)

    def move_slider(self, value):
        self.bar[0].set_height(1)
        print("Slider moved!")
    

app = QApplication(sys.argv)
w = Window()
w.show()
app.exec()

当滑块移动时，会向控制台发送一条消息，并且图形保持相同的高度。
此外，如果您通过函数更改高度__init__，那么它会以某种方式起作用。
我无法弄清楚问题是什么？

python