def _math_tex_to_qpixmap(math_tex: str, fs: int):
# set up a mpl figure instance
fig = Figure()
fig.patch.set_facecolor('none')
fig.set_canvas(FigureCanvasAgg(fig))
renderer = fig.canvas.get_renderer()
# plot the math_tex expression
ax = fig.add_axes([0, 0, 1, 1])
ax.axis('off')
ax.patch.set_facecolor('none')
t = ax.text(0, 0, math_tex, ha='left', va='bottom', fontsize=fs)
# fit figure size to text artist
f_width, f_height = fig.get_size_inches()
fig_bbox = fig.get_window_extent(renderer)
text_bbox = t.get_window_extent(renderer)
tight_fwidth = text_bbox.width * f_width / fig_bbox.width
tight_fheight = text_bbox.height * f_height / fig_bbox.height
fig.set_size_inches(tight_fwidth, tight_fheight)
# convert mpl figure to QPixmap
buf, size = fig.canvas.print_to_buffer()
return QPixmap(QImage.rgbSwapped(QImage(buf, size[0], size[1], QImage.Format_ARGB32)))
class PlotCanvas(FigureCanvas):
def __init__(self, parent=None, width=5, height=4, dpi=100):
print(width, height)
self.fig = Figure(figsize=(width, height), dpi=dpi)
self.parent = parent
self.axes = self.fig.add_subplot(111)
FigureCanvas.__init__(self, self.fig)
self.setParent(parent)
def func(self, pct, allvals):
absolute = float(pct / 100. * np.sum(allvals))
return "{:.1f}%\n{:.2f} ".format(pct, absolute)
def update_figure(self, labels, fracs, title, text):
self.axes.clear()
self.axes.set_title(title)
self.axes.pie(x=fracs,
labels=labels,
autopct=lambda pct: self.func(pct, fracs),
textprops=dict(color="#000000"),
startangle=90)
#print(self.sizeHint().h)
self.axes.text(-(self.fig.get_size_inches()[0] / 3),
(self.fig.get_size_inches()[1]) / 5,
text,
horizontalalignment='left',
color='green',
fontsize=12)
self.draw()
def updateLine(self, scale, dataList):
self.axes.clear()
for line in dataList:
self.axes.plot(scale, line[1], label=line[0], marker='.')
self.axes.set(xlabel='Data', ylabel='Value', title='最近30日')
self.axes.grid(linestyle='--', linewidth=1)
self.axes.legend()
self.draw()
