我正在尝试在 pyqt5 窗口小部件中绘制多个图形。我能够做到这一点,但如果我向窗口添加更多图形,图形的大小只会被“压缩”。通过运行以下代码并点击 Push for Window 1
与 Push for Window 2
来查看比较。
我想在canvas
上加一个滚动条,这样我就可以保留图形的大小,就像将多个图形放在一个word文件中,使用滚动条上下移动查看图形一样.我该怎么做?
import sys
import pandas as pd
import numpy as np
from PyQt5.QtWidgets import (
QApplication,QLabel,QMainWindow,QPushButton,QVBoxLayout,QWidget,)
from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas
from matplotlib.backends.backend_qt5agg import NavigationToolbar2QT as NavigationToolbar
import matplotlib.pyplot as plt
class AnotherWindow1(QWidget):
def __init__(self):
super().__init__()
self.figure = plt.figure(figsize=(45,15))
self.canvas = FigureCanvas(self.figure)
layout = QVBoxLayout()
button1 = QPushButton("Plot")
button1.clicked.connect(self.plot)
button2 = QPushButton("Back")
button2.clicked.connect(self.close_window)
layout.addWidget(button1)
layout.addWidget(button2)
layout.addWidget(self.canvas)
self.setLayout(layout)
def close_window(self):
self.close()
def plot(self):
self.figure.clear()
ax1 = self.figure.add_subplot(111)
data = pd.DataFrame(np.random.rand(5))
data.plot(ax=ax1)
self.canvas.draw()
class AnotherWindow2(QWidget):
def __init__(self):
super().__init__()
self.figure = plt.figure(figsize=(45,15))
self.canvas = FigureCanvas(self.figure)
self.canvas2 = FigureCanvas(self.figure)
self.canvas3 = FigureCanvas(self.figure)
layout = QVBoxLayout()
button1 = QPushButton("Plot")
button1.clicked.connect(self.plot)
button2 = QPushButton("Back")
button2.clicked.connect(self.close_window)
layout.addWidget(button1)
layout.addWidget(button2)
layout.addWidget(self.canvas)
layout.addWidget(self.canvas2)
layout.addWidget(self.canvas3)
self.setLayout(layout)
def close_window(self):
self.close()
def plot(self):
self.figure.clear()
ax1 = self.figure.add_subplot(111)
data = pd.DataFrame(np.random.rand(5))
data.plot(ax=ax1)
self.canvas.draw()
ax2 = self.figure.add_subplot(111)
data = pd.DataFrame(np.random.rand(5))
data.plot(ax=ax2)
self.canvas2.draw()
ax2 = self.figure.add_subplot(111)
data = pd.DataFrame(np.random.rand(5))
data.plot(ax=ax2)
self.canvas3.draw()
class MainWindow(QMainWindow):
def __init__(self):
super().__init__()
self.window1 = AnotherWindow1()
self.window2 = AnotherWindow2()
l = QVBoxLayout()
button1 = QPushButton("Push for Window 1")
button1.clicked.connect(self.show_window1)
l.addWidget(button1)
button2 = QPushButton("Push for Window 2")
button2.clicked.connect(self.show_window2)
l.addWidget(button2)
w = QWidget()
w.setLayout(l)
self.setCentralWidget(w)
def show_window1(self):
self.window1.show()
def show_window2(self):
self.window2.show()
app = QApplication(sys.argv)
w = MainWindow()
w.show()
app.exec()