def edit(request, key):
"""Open the presentation editor screen
Args:
key (str): Presentation public key, default = None
"""
from main.views.themes import get_css
try:
presentation = Presentation.objects.get(key=key)
# check if user is allowed to edit this presentation
if presentation.can_edit(request.user):
# get user data
user_data = {
"username": request.user.username,
"first_name": request.user.first_name,
"last_name": request.user.last_name,
}
else:
raise ObjectDoesNotExist
except ObjectDoesNotExist:
return HttpResponseRedirect("/")
return render_to_response("edit.html", {"theme_css": get_css(request, presentation.theme_id).content,
"presentation": presentation,
"user_data": user_data,
"share_form": share(request, presentation.id).content if presentation.is_owner(request.user) else None,
"form_change_options": ChangeOptionsForm(instance=presentation),
"NODEJS_URL": settings.NODEJS_URL
}, context_instance=RequestContext(request))
def view(request, key):
"""Shows the presentation"""
# get the presentation based on its key
presentation = Presentation.objects.get(key = key)
if presentation.is_private:
if not presentation.is_allowed(request.user):
raise Http404
from main.views.themes import get_css
slides = presentation.get_slides()
# Calculate the overview slide data
overview_scale = 1
overview_middle_point = {}
num_slides = slides.count()
if num_slides > 1:
x_values = []
y_values = []
for i in slides:
x_values.append(int(i["pos_x"]))
y_values.append(int(i["pos_y"]))
presentation_width = max(x_values) - min(x_values)
presentation_height = max(y_values) - min(y_values)
overview_middle_point = {"x": presentation_width/2, "y": presentation_height/2}
overview_scale = presentation_width / 768
slides.rewind()
# show the presentation preview
return render_to_response("view.html", {
"presentation": presentation,
"theme_css" : get_css(request, presentation.theme.id).content,
"slides": slides,
"overview_middle_point": overview_middle_point,
"overview_scale": overview_scale,
"num_slides": num_slides
}, context_instance=RequestContext(request))