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#!/usr/bin/env python
# coding: utf-8
# /*##########################################################################
#
# Copyright (c) 2016-2019 European Synchrotron Radiation Facility
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
# ###########################################################################*/
"""
Example of drop zone supporting application/x-silx-uri
"""
from __future__ import absolute_import
__authors__ = ["V. Valls"]
__license__ = "MIT"
__date__ = "25/01/2019"
import logging
import silx.io
from silx.gui import qt
from silx.gui.plot.PlotWidget import PlotWidget
_logger = logging.getLogger(__name__)
logging.basicConfig()
class DropPlotWidget(PlotWidget):
def __init__(self, parent=None, backend=None):
PlotWidget.__init__(self, parent=parent, backend=backend)
self.setAcceptDrops(True)
def dragEnterEvent(self, event):
if event.mimeData().hasFormat("application/x-silx-uri"):
event.acceptProposedAction()
def dropEvent(self, event):
byteString = event.mimeData().data("application/x-silx-uri")
silxUrl = byteString.data().decode("utf-8")
with silx.io.open(silxUrl) as h5:
if silx.io.is_dataset(h5):
dataset = h5[...]
else:
_logger.error("Unsupported URI")
dataset = None
if dataset is not None:
if dataset.ndim == 1:
self.clear()
self.addCurve(y=dataset, x=range(dataset.size))
event.acceptProposedAction()
elif dataset.ndim == 2:
self.clear()
self.addImage(data=dataset)
event.acceptProposedAction()
else:
_logger.error("Unsupported dataset")
class DropLabel(qt.QLabel):
def __init__(self, parent=None, backend=None):
qt.QLabel.__init__(self)
self.setAcceptDrops(True)
self.setText("Drop something here")
def dragEnterEvent(self, event):
if event.mimeData().hasFormat("application/x-silx-uri"):
event.acceptProposedAction()
def dropEvent(self, event):
byteString = event.mimeData().data("application/x-silx-uri")
silxUrl = byteString.data().decode("utf-8")
url = silx.io.url.DataUrl(silxUrl)
self.setText(url.path())
toolTipTemplate = ("<html><ul>"
"<li><b>file_path</b>: {file_path}</li>"
"<li><b>data_path</b>: {data_path}</li>"
"<li><b>data_slice</b>: {data_slice}</li>"
"<li><b>scheme</b>: {scheme}</li>"
"</html>"
"</ul></html>"
)
toolTip = toolTipTemplate.format(
file_path=url.file_path(),
data_path=url.data_path(),
data_slice=url.data_slice(),
scheme=url.scheme())
self.setToolTip(toolTip)
event.acceptProposedAction()
class DropExample(qt.QMainWindow):
def __init__(self, parent=None):
super(DropExample, self).__init__(parent)
centralWidget = qt.QWidget(self)
layout = qt.QVBoxLayout()
centralWidget.setLayout(layout)
layout.addWidget(DropPlotWidget(parent=self))
layout.addWidget(DropLabel(parent=self))
self.setCentralWidget(centralWidget)
def main():
app = qt.QApplication([])
example = DropExample()
example.show()
app.exec_()
if __name__ == "__main__":
main()
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