class PlotWidget2(qt.QWidget):
"""This widget overloads PlotWidget with methods enabling drag and drop
of data files into this widget. At the moment, only CSV files are supported.
The first column will be assumed to be data for the x axis. All other columns
will be plotted against the first one.
"""
def __init__(self, parent=None, backend=None,
legends=False, callback=None, **kw):
qt.QWidget.__init__(self, parent)
layout = qt.QVBoxLayout(self)
layout.setContentsMargins(0, 0, 0, 0)
layout.setSpacing(0)
self.plotwidget = PlotWidget(self, backend,
legends, callback, **kw)
layout.addWidget(self.plotwidget)
self.setAcceptDrops(True)
def dragEnterEvent(self, e):
if e.mimeData().hasUrls():
e.accept()
def dropEvent(self, e):
data_file_path = None
if e.mimeData().hasUrls():
# we accept only single files
if e.mimeData().urls()[0].path().lower().endswith('.csv'):
data_file_path = e.mimeData().urls()[0].path()
if data_file_path is not None:
if sys.platform.startswith("win") and \
data_file_path.startswith("/") and \
":/" in data_file_path:
data_file_path = data_file_path[1:]
data = CSVData(data_file_path)
x = data.get_xcol(0)
ys = data.get_ycols()
hdrs = data.get_hdrs()
(xhdr, yhdrs) = (hdrs[0], hdrs[1:])
for (y, yhdr) in zip(ys, yhdrs):
self.plotwidget.addCurve(x, y, legend=yhdr, xlabel=xhdr, ylabel=yhdr)
def keyPressEvent(self, event):
if (event.modifiers() & qt.Qt.ShiftModifier) and (event.modifiers() & qt.Qt.ControlModifier):
if event.key() == qt.Qt.Key_C:
#print("Shift + Ctrl + C pressed")
self.renderToClipboard()
qt.QWidget.keyPressEvent(self, event)
def renderToClipboard(self):
pixmap = qt.QPixmap(self.size())
self.render(pixmap)
qt.QApplication.clipboard().setPixmap(pixmap)
def __init__(self, parent=None, backend=None,
legends=False, callback=None, **kw):
qt.QWidget.__init__(self, parent)
layout = qt.QVBoxLayout(self)
layout.setContentsMargins(0, 0, 0, 0)
layout.setSpacing(0)
self.plotwidget = PlotWidget(self, backend,
legends, callback, **kw)
layout.addWidget(self.plotwidget)
self.setAcceptDrops(True)