From 07d44ba86ebef265a338232fd7108517f4fce503 Mon Sep 17 00:00:00 2001
From: Alexander Minges <alexander.minges@gmail.com>
Date: Wed, 8 Jul 2015 01:04:05 +0200
Subject: [PATCH] Custom Navigation; Fix mouse events causing lag
---
ui/mplwidget.py | 49 ++++++++++++++++++++++++++++++++++++-------------
1 file changed, 36 insertions(+), 13 deletions(-)
diff --git a/ui/mplwidget.py b/ui/mplwidget.py
index d2a37ae..cb7d842 100644
--- a/ui/mplwidget.py
+++ b/ui/mplwidget.py
@@ -1,27 +1,50 @@
-from PyQt5 import QtWidgets, QtGui, QtCore
-from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas
-from matplotlib.backends.backend_qt5agg import NavigationToolbar2QT as NavigationToolbar
+from PyQt5 import QtWidgets
+from matplotlib.backends.backend_qt5agg import (FigureCanvasQTAgg as
+ FigureCanvas)
+from matplotlib.backends.backend_qt5agg import (NavigationToolbar2QT as
+ NavigationToolbar)
from matplotlib.figure import Figure
+
class MplCanvas(FigureCanvas):
- def __init__(self):
- self.fig = Figure()
+ def __init__(self, parent=None, width=4, height=5, dpi=100):
+ self.fig = Figure(figsize=(width, height), dpi=dpi)
self.ax = self.fig.add_subplot(111)
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)
- 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):
self.ax.clear()
self.fig.clear()
-class MplWidget(QtWidgets.QWidget):
- def __init__(self, parent = None):
- QtWidgets.QWidget.__init__(self, parent)
+
+class CustomNavigationToolbar(NavigationToolbar):
+ 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.ntb = NavigationToolbar(self.canvas, self)
+ self.ntb = CustomNavigationToolbar(self.canvas, self,
+ coordinates=False)
self.vbl = QtWidgets.QVBoxLayout()
- self.vbl.addWidget(self.canvas)
self.vbl.addWidget(self.ntb)
- self.setLayout(self.vbl)
\ No newline at end of file
+ self.vbl.addWidget(self.canvas)
+ self.setLayout(self.vbl)