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"""
Collection of utility functions common to different toolkits.
"""
def popup_save(parent=None):
"""Popup a dialog asking for an image name to save the scene to.
This is used mainly to save a scene in full screen mode. Returns a
filename, returns empty string if action was cancelled. `parent` is
the parent widget over which the dialog will be popped up.
"""
from pyface.api import FileDialog, OK
extensions = ['*.png', '*.jpg', '*.tiff', '*.bmp', '*.ps',
'*.eps', '*.pdf', '*.tex', '*.rib', '*.wrl',
'*.oogl', '*.vrml', '*.obj', '*.iv', '*.pov',
'*.x3d']
descriptions = ["PNG", "JPG", "TIFF", "Bitmap", "PostScript",
"EPS", "PDF", "Tex", "RIB", "WRL",
"Geomview", "VRML", "Wavefront", "Open Inventor",
"Povray", "X3D"]
wildcard = ""
for description, extension in zip(descriptions, extensions):
wildcard += "{} ({})|{}|".format(description,
extension,
extension)
wildcard += "Determine by extension (*.*)|(*.*)"
dialog = FileDialog(
parent=parent, title='Save scene to image',
action='save as', default_filename="snapshot.png",
wildcard=wildcard
)
if dialog.open() == OK:
return dialog.path
else:
return ''
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