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# Generic Split implementation.
# Use as a base class for other splits.
# Derived classes should at least implement the methods that call
# unimpl() below: minsize(), getbounds() and setbounds().
Error = 'Split.Error' # Exception
import rect
from util import remove
class Split():
#
# Calls from creator
# NB derived classes may add parameters to create()
#
def create(self, parent):
parent.addchild(self)
self.parent = parent
self.children = []
self.mouse_interest = []
self.timer_interest = []
self.mouse_focus = 0
return self
#
# Downcalls from parent to child
#
def destroy(self):
self.parent = None
for child in self.children:
child.destroy()
del self.children[:]
del self.mouse_interest[:]
del self.timer_interest[:]
self.mouse_focus = None
#
def minsize(self, m): return unimpl()
def getbounds(self): return unimpl()
def setbounds(self, bounds): unimpl()
#
def draw(self, d_detail):
# (Could avoid calls to children outside the area)
for child in self.children:
child.draw(d_detail)
#
# Downcalls only made after certain upcalls
#
def mouse_down(self, detail):
if self.mouse_focus:
self.mouse_focus.mouse_down(detail)
p = detail[0]
for child in self.mouse_interest:
if rect.pointinrect(p, child.getbounds()):
self.mouse_focus = child
child.mouse_down(detail)
def mouse_move(self, detail):
if self.mouse_focus:
self.mouse_focus.mouse_move(detail)
def mouse_up(self, detail):
if self.mouse_focus:
self.mouse_focus.mouse_up(detail)
self.mouse_focus = 0
#
def timer(self):
for child in self.timer_interest:
child.timer()
#
# Upcalls from child to parent
#
def addchild(self, child):
if child in self.children:
raise Error, 'addchild: child already inlist'
self.children.append(child)
def delchild(self, child):
if child not in self.children:
raise Error, 'delchild: child not in list'
remove(child, self.children)
if child in self.mouse_interest:
remove(child, self.mouse_interest)
if child in self.timer_interest:
remove(child, self.timer_interest)
if child = self.mouse_focus:
self.mouse_focus = 0
#
def need_mouse(self, child):
if child not in self.mouse_interest:
self.mouse_interest.append(child)
self.parent.need_mouse(self)
def no_mouse(self, child):
if child in self.mouse_interest:
remove(child, self.mouse_interest)
if not self.mouse_interest:
self.parent.no_mouse(self)
#
def need_timer(self, child):
if child not in self.timer_interest:
self.timer_interest.append(child)
self.parent.need_timer(self)
def no_timer(self, child):
if child in self.timer_interest:
remove(child, self.timer_interest)
if not self.timer_interest:
self.parent.no_timer(self)
#
# The rest are transparent:
#
def begindrawing(self):
return self.parent.begindrawing()
def beginmeasuring(self):
return self.parent.beginmeasuring()
#
def change(self, area):
self.parent.change(area)
def scroll(self, area_vector):
self.parent.scroll(area_vector)
def settimer(self, itimer):
self.parent.settimer(itimer)
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