def __init__(self, **kwargs):
super().__init__()
self.library = PicroscopyLibrary(**kwargs)
self.helpers = WebHelpers(self.library)
self.clients = kwargs.get('clients', IPv4Network('0.0.0.0/0'))
logging.info('Clients must be on network %s', self.clients)
self.static_dir = os.path.abspath(
os.path.normpath(
kwargs.get('static_dir', os.path.join(HERE, 'static'))))
logging.info('Static files: %s', self.static_dir)
self.templates_dir = os.path.abspath(
os.path.normpath(
kwargs.get('templates_dir', os.path.join(HERE, 'templates'))))
logging.info('Chameleon templates: %s', self.templates_dir)
self.templates = PageTemplateLoader(self.templates_dir,
default_extension='.pt')
self.layout = self.templates['layout']
# No need to make flashes a per-session thing - it's a single user app!
self.flashes = []
self.router = PathRouter()
# XXX Add handler for exiting system
# XXX Make exit code conditional? (upgrade/reboot/shutdown/etc.)
self.router.add_routes([
url('/', self.do_template, kwargs={'page': 'library'},
name='home'),
url('/{page}.html', self.do_template, name='template'),
url('/view/{image}.html',
self.do_template,
kwargs={'page': 'image'},
name='view'),
url('/static/{path:any}', self.do_static, name='static'),
url('/images/{image}', self.do_image, name='image'),
url('/thumbs/{image}', self.do_thumb, name='thumb'),
url('/delete/{image}', self.do_delete, name='delete'),
url('/config', self.do_config, name='config'),
url('/reset', self.do_reset, name='reset'),
url('/capture', self.do_capture, name='capture'),
url('/download', self.do_download, name='download'),
url('/send', self.do_send, name='send'),
url('/logout', self.do_logout, name='logout'),
])
def __init__(self, **kwargs):
super().__init__()
self.library = PicroscopyLibrary(**kwargs)
self.helpers = WebHelpers(self.library)
self.clients = kwargs.get('clients', IPv4Network('0.0.0.0/0'))
logging.info('Clients must be on network %s', self.clients)
self.static_dir = os.path.abspath(os.path.normpath(kwargs.get(
'static_dir', os.path.join(HERE, 'static')
)))
logging.info('Static files: %s', self.static_dir)
self.templates_dir = os.path.abspath(os.path.normpath(kwargs.get(
'templates_dir', os.path.join(HERE, 'templates')
)))
logging.info('Chameleon templates: %s', self.templates_dir)
self.templates = PageTemplateLoader(
self.templates_dir, default_extension='.pt')
self.layout = self.templates['layout']
# No need to make flashes a per-session thing - it's a single user app!
self.flashes = []
self.router = PathRouter()
# XXX Add handler for exiting system
# XXX Make exit code conditional? (upgrade/reboot/shutdown/etc.)
self.router.add_routes([
url('/', self.do_template, kwargs={'page': 'library'}, name='home'),
url('/{page}.html', self.do_template, name='template'),
url('/view/{image}.html', self.do_template, kwargs={'page': 'image'}, name='view'),
url('/static/{path:any}', self.do_static, name='static'),
url('/images/{image}', self.do_image, name='image'),
url('/thumbs/{image}', self.do_thumb, name='thumb'),
url('/delete/{image}', self.do_delete, name='delete'),
url('/config', self.do_config, name='config'),
url('/reset', self.do_reset, name='reset'),
url('/capture', self.do_capture, name='capture'),
url('/download', self.do_download, name='download'),
url('/send', self.do_send, name='send'),
url('/logout', self.do_logout, name='logout'),
])
class PicroscopyWsgiApp(object):
def __init__(self, **kwargs):
super().__init__()
self.library = PicroscopyLibrary(**kwargs)
self.helpers = WebHelpers(self.library)
self.clients = kwargs.get('clients', IPv4Network('0.0.0.0/0'))
logging.info('Clients must be on network %s', self.clients)
self.static_dir = os.path.abspath(
os.path.normpath(
kwargs.get('static_dir', os.path.join(HERE, 'static'))))
logging.info('Static files: %s', self.static_dir)
self.templates_dir = os.path.abspath(
os.path.normpath(
kwargs.get('templates_dir', os.path.join(HERE, 'templates'))))
logging.info('Chameleon templates: %s', self.templates_dir)
self.templates = PageTemplateLoader(self.templates_dir,
default_extension='.pt')
self.layout = self.templates['layout']
# No need to make flashes a per-session thing - it's a single user app!
self.flashes = []
self.router = PathRouter()
# XXX Add handler for exiting system
# XXX Make exit code conditional? (upgrade/reboot/shutdown/etc.)
self.router.add_routes([
url('/', self.do_template, kwargs={'page': 'library'},
name='home'),
url('/{page}.html', self.do_template, name='template'),
url('/view/{image}.html',
self.do_template,
kwargs={'page': 'image'},
name='view'),
url('/static/{path:any}', self.do_static, name='static'),
url('/images/{image}', self.do_image, name='image'),
url('/thumbs/{image}', self.do_thumb, name='thumb'),
url('/delete/{image}', self.do_delete, name='delete'),
url('/config', self.do_config, name='config'),
url('/reset', self.do_reset, name='reset'),
url('/capture', self.do_capture, name='capture'),
url('/download', self.do_download, name='download'),
url('/send', self.do_send, name='send'),
url('/logout', self.do_logout, name='logout'),
])
def __call__(self, environ, start_response):
req = Request(environ)
try:
if not IPv4Address(req.remote_addr) in self.clients:
raise exc.HTTPForbidden()
handler, kwargs = self.router.match(req.path_info)
if handler:
# XXX Why does route_name only appear in kwargs sometimes?!
if 'route_name' in kwargs:
del kwargs['route_name']
resp = handler(req, **kwargs)
else:
self.not_found(req)
except exc.HTTPException as e:
# The exception itself is a WSGI response
resp = e
return resp(environ, start_response)
def not_found(self, req):
"""
Handler for unknown locations (404)
"""
raise exc.HTTPNotFound('The resource at %s could not be found' %
req.path_info)
def do_reset(self, req):
"""
Reset all settings to their defaults
"""
self.library.camera_reset()
self.flashes.append('Camera settings reset to defaults')
raise exc.HTTPFound(
location=self.router.path_for('template', page='library'))
def do_config(self, req):
"""
Configure the library and camera settings
"""
# Resolution is handled specially as the camera needs to stop the
# preview in order to change it
try:
new_resolution = tuple(
int(i) for i in req.params['resolution'].split('x', 1))
if len(new_resolution) != 2:
raise ValueError()
except ValueError:
self.flashes.append('Invalid resolution: %s' %
req.params['resolution'])
if self.library.camera.resolution != new_resolution:
try:
self.library.camera.stop_preview()
try:
self.library.camera.resolution = new_resolution
finally:
self.library.camera.start_preview()
except PiCameraError:
self.flashes.append('Unable to change camera resolution '
'to %s' % req.params['resolution'])
# Everything else is handled generically...
for setting in (
'sharpness',
'contrast',
'brightness',
'saturation', #'ISO',
'exposure-compensation'):
try:
setattr(self.library.camera, setting.replace('-', '_'),
int(req.params[setting]))
except ValueError:
self.flashes.append('Invalid %s: %s' %
(setting, req.params[setting]))
for setting in ('hflip', 'vflip'):
try:
setattr(self.library.camera, setting.replace('-', '_'),
bool(req.params.get(setting, 0)))
except ValueError:
self.flashes.append('Invalid %s: %s' %
(setting, req.params[setting]))
for setting in ('meter-mode', 'awb-mode', 'exposure-mode'):
try:
setattr(self.library.camera, setting.replace('-', '_'),
req.params[setting])
except ValueError:
self.flashes.append('Invalid %s: %s' %
(setting, req.params[setting]))
for setting in ('artist', 'email', 'copyright', 'description',
'filename-template', 'format'):
try:
setattr(self.library, setting.replace('-', '_'),
req.params[setting])
except ValueError:
self.flashes.append('Invalid %s: %s' %
(setting, req.params[setting]))
# If any settings failed, re-render the settings form
if self.flashes:
return self.do_template(req, 'settings')
raise exc.HTTPFound(
location=self.router.path_for('template', page='library'))
def do_capture(self, req):
"""
Take a new image with the camera and add it to the library
"""
self.library.capture()
raise exc.HTTPFound(
location=self.router.path_for('template', page='library'))
def do_download(self, req):
"""
Send the library as a .zip archive
"""
archive = self.library.archive()
size = archive.seek(0, io.SEEK_END)
archive.seek(0)
resp = Response()
resp.content_type = 'application/zip'
resp.content_length = size
resp.content_disposition = 'attachment; filename=images.zip'
resp.app_iter = FileWrapper(archive)
return resp
def do_send(self, req):
"""
Send the library as a set of attachments to an email
"""
self.library.send()
self.flashes.append('Email sent to %s' % library.email)
raise exc.HTTPFound(
location=self.router.path_for('template', page='library'))
def do_delete(self, req, image):
"""
Delete the selected images from library
"""
self.library.remove(image)
raise exc.HTTPFound(
location=self.router.path_for('template', page='library'))
def do_logout(self, req):
"""
Clear the library of all images, reset all settings
"""
self.library.clear()
self.library.user_reset()
self.library.camera_reset()
raise exc.HTTPFound(
location=self.router.path_for('template', page='settings'))
def do_image(self, req, image):
"""
Serve an image from the library
"""
if not image in self.library:
self.not_found(req)
resp = Response()
resp.content_type, resp.content_encoding = mimetypes.guess_type(
image, strict=False)
resp.content_length = self.library.stat_image(image).st_size
resp.app_iter = FileWrapper(self.library.open_image(image))
return resp
def do_thumb(self, req, image):
"""
Serve a thumbnail of an image from the library
"""
if not image in self.library:
self.not_found(req)
resp = Response()
resp.content_type = 'image/jpeg'
resp.content_length = self.library.stat_thumbnail(image).st_size
resp.app_iter = FileWrapper(self.library.open_thumbnail(image))
return resp
def do_static(self, req, path):
"""
Serve static files from disk
"""
path = os.path.normpath(os.path.join(self.static_dir, path))
if not path.startswith(self.static_dir):
self.not_found(req)
resp = Response()
resp.content_type, resp.content_encoding = mimetypes.guess_type(
path, strict=False)
if resp.content_type is None:
resp.content_type = 'application/octet-stream'
resp.content_length = os.stat(path).st_size
resp.app_iter = FileWrapper(io.open(path, 'rb'))
return resp
def do_template(self, req, page, image=None):
"""
Serve a Chameleon template-based page
"""
resp = Response()
resp.content_type = 'text/html'
resp.content_encoding = 'utf-8'
try:
template = self.templates[page]
except ValueError:
self.not_found(req)
resp.text = template(req=req,
page=page,
image=image,
helpers=self.helpers,
layout=self.layout,
flashes=self.flashes,
library=self.library,
camera=self.library.camera,
router=self.router)
del self.flashes[:]
return resp
class PicroscopyWsgiApp(object):
def __init__(self, **kwargs):
super().__init__()
self.library = PicroscopyLibrary(**kwargs)
self.helpers = WebHelpers(self.library)
self.clients = kwargs.get('clients', IPv4Network('0.0.0.0/0'))
logging.info('Clients must be on network %s', self.clients)
self.static_dir = os.path.abspath(os.path.normpath(kwargs.get(
'static_dir', os.path.join(HERE, 'static')
)))
logging.info('Static files: %s', self.static_dir)
self.templates_dir = os.path.abspath(os.path.normpath(kwargs.get(
'templates_dir', os.path.join(HERE, 'templates')
)))
logging.info('Chameleon templates: %s', self.templates_dir)
self.templates = PageTemplateLoader(
self.templates_dir, default_extension='.pt')
self.layout = self.templates['layout']
# No need to make flashes a per-session thing - it's a single user app!
self.flashes = []
self.router = PathRouter()
# XXX Add handler for exiting system
# XXX Make exit code conditional? (upgrade/reboot/shutdown/etc.)
self.router.add_routes([
url('/', self.do_template, kwargs={'page': 'library'}, name='home'),
url('/{page}.html', self.do_template, name='template'),
url('/view/{image}.html', self.do_template, kwargs={'page': 'image'}, name='view'),
url('/static/{path:any}', self.do_static, name='static'),
url('/images/{image}', self.do_image, name='image'),
url('/thumbs/{image}', self.do_thumb, name='thumb'),
url('/delete/{image}', self.do_delete, name='delete'),
url('/config', self.do_config, name='config'),
url('/reset', self.do_reset, name='reset'),
url('/capture', self.do_capture, name='capture'),
url('/download', self.do_download, name='download'),
url('/send', self.do_send, name='send'),
url('/logout', self.do_logout, name='logout'),
])
def __call__(self, environ, start_response):
req = Request(environ)
try:
if not IPv4Address(req.remote_addr) in self.clients:
raise exc.HTTPForbidden()
handler, kwargs = self.router.match(req.path_info)
if handler:
# XXX Why does route_name only appear in kwargs sometimes?!
if 'route_name' in kwargs:
del kwargs['route_name']
resp = handler(req, **kwargs)
else:
self.not_found(req)
except exc.HTTPException as e:
# The exception itself is a WSGI response
resp = e
return resp(environ, start_response)
def not_found(self, req):
"""
Handler for unknown locations (404)
"""
raise exc.HTTPNotFound(
'The resource at %s could not be found' % req.path_info)
def do_reset(self, req):
"""
Reset all settings to their defaults
"""
self.library.camera_reset()
self.flashes.append('Camera settings reset to defaults')
raise exc.HTTPFound(
location=self.router.path_for('template', page='library'))
def do_config(self, req):
"""
Configure the library and camera settings
"""
# Resolution is handled specially as the camera needs to stop the
# preview in order to change it
try:
new_resolution = tuple(
int(i) for i in req.params['resolution'].split('x', 1))
if len(new_resolution) != 2:
raise ValueError()
except ValueError:
self.flashes.append(
'Invalid resolution: %s' % req.params['resolution'])
if self.library.camera.resolution != new_resolution:
try:
self.library.camera.stop_preview()
try:
self.library.camera.resolution = new_resolution
finally:
self.library.camera.start_preview()
except PiCameraError:
self.flashes.append(
'Unable to change camera resolution '
'to %s' % req.params['resolution'])
# Everything else is handled generically...
for setting in (
'sharpness', 'contrast', 'brightness', 'saturation', #'ISO',
'exposure-compensation'):
try:
setattr(
self.library.camera, setting.replace('-', '_'),
int(req.params[setting])
)
except ValueError:
self.flashes.append(
'Invalid %s: %s' % (setting, req.params[setting]))
for setting in ('hflip', 'vflip'):
try:
setattr(
self.library.camera, setting.replace('-', '_'),
bool(req.params.get(setting, 0))
)
except ValueError:
self.flashes.append(
'Invalid %s: %s' % (setting, req.params[setting]))
for setting in ('meter-mode', 'awb-mode', 'exposure-mode'):
try:
setattr(
self.library.camera, setting.replace('-', '_'),
req.params[setting]
)
except ValueError:
self.flashes.append(
'Invalid %s: %s' % (setting, req.params[setting]))
for setting in (
'artist', 'email', 'copyright', 'description',
'filename-template', 'format'):
try:
setattr(
self.library, setting.replace('-', '_'),
req.params[setting]
)
except ValueError:
self.flashes.append(
'Invalid %s: %s' % (setting, req.params[setting]))
# If any settings failed, re-render the settings form
if self.flashes:
return self.do_template(req, 'settings')
raise exc.HTTPFound(
location=self.router.path_for('template', page='library'))
def do_capture(self, req):
"""
Take a new image with the camera and add it to the library
"""
self.library.capture()
raise exc.HTTPFound(
location=self.router.path_for('template', page='library'))
def do_download(self, req):
"""
Send the library as a .zip archive
"""
archive = self.library.archive()
size = archive.seek(0, io.SEEK_END)
archive.seek(0)
resp = Response()
resp.content_type = 'application/zip'
resp.content_length = size
resp.content_disposition = 'attachment; filename=images.zip'
resp.app_iter = FileWrapper(archive)
return resp
def do_send(self, req):
"""
Send the library as a set of attachments to an email
"""
self.library.send()
self.flashes.append('Email sent to %s' % library.email)
raise exc.HTTPFound(
location=self.router.path_for('template', page='library'))
def do_delete(self, req, image):
"""
Delete the selected images from library
"""
self.library.remove(image)
raise exc.HTTPFound(
location=self.router.path_for('template', page='library'))
def do_logout(self, req):
"""
Clear the library of all images, reset all settings
"""
self.library.clear()
self.library.user_reset()
self.library.camera_reset()
raise exc.HTTPFound(
location=self.router.path_for('template', page='settings'))
def do_image(self, req, image):
"""
Serve an image from the library
"""
if not image in self.library:
self.not_found(req)
resp = Response()
resp.content_type, resp.content_encoding = mimetypes.guess_type(
image, strict=False)
resp.content_length = self.library.stat_image(image).st_size
resp.app_iter = FileWrapper(self.library.open_image(image))
return resp
def do_thumb(self, req, image):
"""
Serve a thumbnail of an image from the library
"""
if not image in self.library:
self.not_found(req)
resp = Response()
resp.content_type = 'image/jpeg'
resp.content_length = self.library.stat_thumbnail(image).st_size
resp.app_iter = FileWrapper(self.library.open_thumbnail(image))
return resp
def do_static(self, req, path):
"""
Serve static files from disk
"""
path = os.path.normpath(os.path.join(self.static_dir, path))
if not path.startswith(self.static_dir):
self.not_found(req)
resp = Response()
resp.content_type, resp.content_encoding = mimetypes.guess_type(
path, strict=False)
if resp.content_type is None:
resp.content_type = 'application/octet-stream'
resp.content_length = os.stat(path).st_size
resp.app_iter = FileWrapper(io.open(path, 'rb'))
return resp
def do_template(self, req, page, image=None):
"""
Serve a Chameleon template-based page
"""
resp = Response()
resp.content_type = 'text/html'
resp.content_encoding = 'utf-8'
try:
template = self.templates[page]
except ValueError:
self.not_found(req)
resp.text = template(
req=req,
page=page,
image=image,
helpers=self.helpers,
layout=self.layout,
flashes=self.flashes,
library=self.library,
camera=self.library.camera,
router=self.router)
del self.flashes[:]
return resp
