def manageEvent(self, event):
# Traversing down the events tree. We receieved an event from the parent NavigationViewController.
# We need to now pass this even down the tree to the corresponding object that the mouse landed on or whatnot.
for subView in self.subViews: # Loop Through each SubView that is LISTENING for events.
if self.isVisible: # Ensure this view is visible (It should be if we've already come this far)
outside = False # Some pre-variable for later reference
mouse = event.pos # Get the mouse Position
if mouse[0] > subView.rect.topleft[0]: # Check the mouse position in regards to the subView's rectangle.
if mouse[1] > subView.rect.topleft[1]:
if mouse[0] < subView.rect.bottomright[0]:
if mouse[1] < subView.rect.bottomright[1]:
# noticer("Mouse within bounds", 0, subView) # Mouse is within the bounds
# It's easier to ask forgiveness than to ask permission. # Catching exceptions is key here, in case the subView doesn't have a callback method implemented
try:
subView.manageEvent(event, self, True) # Method exists, and was used.
except (AttributeError, TypeError):
noticer("Method manageEvent() does not exist when inside", 1, subView) # Method does not exist. What now?
else:
outside = True # Move back down the tree, setting the outside variable to True if the mouse is outside.
else:
outside = True
else:
outside = True
else:
outside = True
if outside == True: # Mouse is outside, Try send the callback method again, except with the parameter inside = False (This fixes mousebuttonups)
try:
subView.manageEvent(event, self, False)
except (AttributeError, TypeError):
noticer("Method manageEvent() does not exist when outside", 1, subView)
def userCallback(self, event, caller, withinBounds):
# Method to run the users custom callback. This will catch fatal exceptions (luckily)
try:
self.actions(self, event, caller, withinBounds)
# Method exists, and was used.
except (AttributeError, TypeError):
# Method does not exist. What now?
noticer("Method self.actions() does not exist", 2, self)
def updateView(self):
# this method basically:
# 1. Wipes the canvas clean
# 2. Blits each subView to the canvas, in order that they are in in the list AND only if they are Visible (Saves memory this way)
# 3. Blits the canvas to the screen
noticer("Updating Navigation Controller", 0, self)
self.canvas.fill(self.backgroundcolor)
for subView in self.subViews:
if subView['object'].isVisible:
self.canvas.blit(subView['object'].canvas, (0, 0))
self.screen.blit(self.canvas, (0, 0))
def makeKeyAndVisible(self, identifier):
# This method is needed to bring a subView/viewController to the front. It re-organises the subViews list.
i = 0 # Set a counter for the loop
found = False # Set some defaults
views = copy.copy(self.subViews) # Make a copy of the subViews array so we can modify it without f*****g everything up
while i < len(views): # Loopy
if (views[i]['identifier'] == identifier): # Check if the identifier we're looking for is this object
obj = self.subViews.pop(i) # Remove the object from the middle/top of the array, and get it
obj['object'].isVisible = True # Tell the subView of the object that it is now visible on screen (fixes issues with listening for events - listening for objects that are not on screen)
self.subViews.append(obj) # Re-append the object to the end
found = True # For later use, say that we did find a view
break # Break the loop, we found the one we need, no need to do any more finding. Don't work the processor too hard
else: # Didnt find the object for the identifier :(
self.subViews[i]['object'].isVisible = False # Seeing as this isn't the object we're looking for, let's tell it that no, it's no longer visible
i += 1 # Loop increment
if found != True: # Check to see if we did find one
noticer("The ViewController with identifier" + identifier + " was not found", 2, self) # Warn the console and log that we didn't find anything
# Because we did tell everything to disable itself for interactions, we need to give the top level one interactivity again.
topView = copy.copy(self.subViews) # Get the SubViews Array
top = topView.pop() # Get the last item in the array (The one that is showing)
top['object'].isVisible = True # Tell the object that it is still visible (because we told it earlier that it wasn't)
self.updateView() # Now that everything is basically over, update this navigationController, with the new arrangement of subViews
