我正在使用Python 3.6和PyQt-5.9.1和Qt Designer进行UI设计的应用程序,我需要包括一些matplotlib图。

经过一番挖掘,我发现为了不每次更新gui部分(这是Qt Designer所期望的)时都不修改从ui文件生成的python代码,我需要在Qt Designer中设置MatplotlibWidget插件。

我的问题是,我为此插件找到的引用来自基于Python 2.7的Python(x,y)包,而无法与Python 3.x一起使用。或在Python 3.x / Qt5环境中不起作用的PyQtdesginerplugins软件包(已在此问题How do I add matplotlib plugin to Qt5.4 Designer plugins?中指出)。

在我的Python 3.6和Qt5环境中,是否有可能将MatplotlibWidget添加到Qt Designer中?在将ui与应用程序逻辑隔离时,这将在很大程度上利用Qt Designer的优势。

最佳答案

在下面,您将找到Qt Designer的MatplotlibPlugin的PyQt5版本。

要使用它,请将两个文件都放在PYQTDESIGNERPATH环境变量中包含的目录中,或者放在directories that Qt Designer searches for its own plugins之一内的“ python”子目录中。这两个文件的命名必须完全如下所示。

matplotlibwidget.py:

from PyQt5.QtCore import QSize
from PyQt5.QtWidgets import QSizePolicy
from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as Canvas
from matplotlib.figure import Figure
from matplotlib import rcParams

rcParams['font.size'] = 9


class MatplotlibWidget(Canvas):
    def __init__(self, parent=None, title='', xlabel='', ylabel='',
                 xlim=None, ylim=None, xscale='linear', yscale='linear',
                 width=4, height=3, dpi=100):
        self.figure = Figure(figsize=(width, height), dpi=dpi)
        self.axes = self.figure.add_subplot(111)
        self.axes.set_title(title)
        self.axes.set_xlabel(xlabel)
        self.axes.set_ylabel(ylabel)
        if xscale is not None:
            self.axes.set_xscale(xscale)
        if yscale is not None:
            self.axes.set_yscale(yscale)
        if xlim is not None:
            self.axes.set_xlim(*xlim)
        if ylim is not None:
            self.axes.set_ylim(*ylim)

        super(MatplotlibWidget, self).__init__(self.figure)
        self.setParent(parent)
        super(MatplotlibWidget, self).setSizePolicy(
            QSizePolicy.Expanding, QSizePolicy.Expanding)
        super(MatplotlibWidget, self).updateGeometry()

    def sizeHint(self):
        return QSize(*self.get_width_height())

    def minimumSizeHint(self):
        return QSize(10, 10)


matplotlibplugin.py:

import os
from PyQt5.QtGui import QIcon
from PyQt5.QtDesigner import QPyDesignerCustomWidgetPlugin
from matplotlib import rcParams
from matplotlibwidget import MatplotlibWidget

rcParams['font.size'] = 9


class MatplotlibPlugin(QPyDesignerCustomWidgetPlugin):
    def __init__(self, parent=None):
        super(MatplotlibPlugin, self).__init__(parent)
        self._initialized = False

    def initialize(self, editor):
        self._initialized = True

    def isInitialized(self):
        return self._initialized

    def createWidget(self, parent):
        return MatplotlibWidget(parent)

    def name(self):
        return 'MatplotlibWidget'

    def group(self):
        return 'PyQt'

    def icon(self):
        return QIcon(os.path.join(
            rcParams['datapath'], 'images', 'matplotlib.png'))

    def toolTip(self):
        return ''

    def whatsThis(self):
        return ''

    def isContainer(self):
        return False

    def domXml(self):
        return '<widget class="MatplotlibWidget" name="mplwidget">\n' \
               '</widget>\n'

    def includeFile(self):
        return 'matplotlibwidget'

关于python - Qt5 Matplotlib Designer插件,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/47364804/

10-12 16:52