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Code Issues Releases Wiki Activity

Custom Navigation; Fix mouse events causing lag

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This commit is contained in:
Alexander Minges 2015-07-08 01:04:05 +02:00
parent 1ef02beebb
commit 07d44ba86e
1 changed files with 36 additions and 13 deletions
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49
ui/mplwidget.py
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@ -1,27 +1,50 @@
from PyQt5 import QtWidgets, QtGui, QtCore from PyQt5 import QtWidgets
from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas from matplotlib.backends.backend_qt5agg import (FigureCanvasQTAgg as
from matplotlib.backends.backend_qt5agg import NavigationToolbar2QT as NavigationToolbar FigureCanvas)
from matplotlib.backends.backend_qt5agg import (NavigationToolbar2QT as
NavigationToolbar)
from matplotlib.figure import Figure from matplotlib.figure import Figure
class MplCanvas(FigureCanvas): class MplCanvas(FigureCanvas):
def __init__(self): def __init__(self, parent=None, width=4, height=5, dpi=100):
self.fig = Figure() self.fig = Figure(figsize=(width, height), dpi=dpi)
self.ax = self.fig.add_subplot(111) self.ax = self.fig.add_subplot(111)
FigureCanvas.__init__(self, self.fig) FigureCanvas.__init__(self, self.fig)
FigureCanvas.setSizePolicy(self, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding) self.setParent(parent)
FigureCanvas.setSizePolicy(self, QtWidgets.QSizePolicy.Expanding,
QtWidgets.QSizePolicy.Expanding)
FigureCanvas.updateGeometry(self) FigureCanvas.updateGeometry(self)
self.setFocusPolicy(QtCore.Qt.StrongFocus)
# override mouseMoveEvent with non-functional dummy
# this will prevent the gui thread to hang while moving the mouse
# while a large number of plots is shown simultaniously
def mouseMoveEvent(self, event):
pass
def clear(self): def clear(self):
self.ax.clear() self.ax.clear()
self.fig.clear() self.fig.clear()
class MplWidget(QtWidgets.QWidget):
def __init__(self, parent = None): class CustomNavigationToolbar(NavigationToolbar):
QtWidgets.QWidget.__init__(self, parent) toolitems = (
('Save', 'Save the figure', 'filesave', 'save_figure'),
('Subplots', 'Configure subplots', 'subplots', 'configure_subplots'),
(None, None, None, None), )
def __init__(self, canvas, parent, coordinates=True):
NavigationToolbar.__init__(self, canvas, parent,
coordinates=coordinates)
class MplWidget(QtWidgets.QGraphicsView):
def __init__(self, parent=None):
QtWidgets.QGraphicsView.__init__(self, parent)
self.canvas = MplCanvas() self.canvas = MplCanvas()
self.ntb = NavigationToolbar(self.canvas, self) self.ntb = CustomNavigationToolbar(self.canvas, self,
coordinates=False)
self.vbl = QtWidgets.QVBoxLayout() self.vbl = QtWidgets.QVBoxLayout()
self.vbl.addWidget(self.canvas)
self.vbl.addWidget(self.ntb) self.vbl.addWidget(self.ntb)
self.setLayout(self.vbl) self.vbl.addWidget(self.canvas)
self.setLayout(self.vbl)