Use progress bar from python

cpinter · October 10, 2018, 1:37pm

You can use this convenience function for that

Slicer/Slicer/blob/master/Base/Python/slicer/util.py#L1136


    setattr(mbox, key, value)
# Windows 10 peek feature in taskbar shows all hidden but not destroyed windows
# (after creating and closing a messagebox, hovering over the mouse on Slicer icon, moving up the
# mouse to the peek thumbnail would show it again).
# Popup windows in other Qt applications often show closed popups (such as
# Paraview's Edit / Find data dialog, MeshMixer's File/Preferences dialog).
# By calling deleteLater, the messagebox is permanently deleted when the current call is completed.
mbox.deleteLater()
return mbox.exec_()


def createProgressDialog(parent=None, value=0, maximum=100, labelText="", windowTitle="Processing...", **kwargs):
"""Display a modal QProgressDialog. Go to QProgressDialog documentation
http://pyqt.sourceforge.net/Docs/PyQt4/qprogressdialog.html for more keyword arguments, that could be used.
E.g. progressbar = createProgressIndicator(autoClose=False) if you don't want the progress dialog to automatically
close.
Updating progress value with progressbar.value = 50
Updating label text with progressbar.labelText = "processing XYZ"
"""
import qt
progressIndicator = qt.QProgressDialog(parent if parent else mainWindow())
progressIndicator.minimumDuration = 0

See example of usage here

github.com

Slicer/Slicer/blob/master/Modules/Scripted/DICOMLib/DICOMWidgets.py#L720




if missingFileCount > 0:
  slicer.util.warningDisplay("Warning: %d of %d selected files listed in the database cannot be found on disk."
                             % (missingFileCount, allFileCount), windowTitle="DICOM")


if missingFileCount == allFileCount:
  return loadablesByPlugin, loadEnabled


plugins = self.pluginSelector.selectedPlugins()


progress = slicer.util.createProgressDialog(parent=self, value=0, maximum=len(plugins))


for step, pluginClass in enumerate(plugins):
  if not self.pluginInstances.has_key(pluginClass):
    self.pluginInstances[pluginClass] = slicer.modules.dicomPlugins[pluginClass]()
  plugin = self.pluginInstances[pluginClass]
  if progress.wasCanceled:
    break
  progress.labelText = '\nChecking %s' % pluginClass
  slicer.app.processEvents()
  progress.setValue(step)

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Use progress bar from python

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