| # 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 |
| |
| 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.keybd_interest = [] |
| self.timer_interest = [] |
| self.altdraw_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.keybd_interest[:] |
| del self.timer_interest[:] |
| del self.altdraw_interest[:] |
| self.mouse_focus = None |
| # |
| def minsize(self, m): return unimpl() # Should ask children |
| def getbounds(self): return unimpl() |
| def setbounds(self, bounds): unimpl() # Should tell children |
| # |
| def realize(self): |
| for child in self.children: |
| child.realize() |
| # |
| def draw(self, d_detail): |
| # (Could avoid calls to children outside the area) |
| for child in self.children: |
| child.draw(d_detail) |
| # |
| def altdraw(self, detail): |
| for child in self.altdraw_interest: |
| child.altdraw(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 keybd(self, type_detail): |
| for child in self.keybd_interest: |
| child.keybd(type_detail) |
| # |
| 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' |
| self.children.remove(child) |
| if child in self.mouse_interest: |
| self.mouse_interest.remove(child) |
| if child in self.keybd_interest: |
| self.keybd_interest.remove(child) |
| if child in self.timer_interest: |
| self.timer_interest.remove(child) |
| if child in self.altdraw_interest: |
| self.altdraw_interest.remove(child) |
| 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: |
| self.mouse_interest.remove(child) |
| if not self.mouse_interest: |
| self.parent.no_mouse(self) |
| # |
| def need_keybd(self, child): |
| if child not in self.keybd_interest: |
| self.keybd_interest.append(child) |
| self.parent.need_keybd(self) |
| def no_keybd(self, child): |
| if child in self.keybd_interest: |
| self.keybd_interest.remove(child) |
| if not self.keybd_interest: |
| self.parent.no_keybd(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: |
| self.timer_interest.remove(child) |
| if not self.timer_interest: |
| self.parent.no_timer(self) |
| # |
| def need_altdraw(self, child): |
| if child not in self.altdraw_interest: |
| self.altdraw_interest.append(child) |
| self.parent.need_altdraw(self) |
| def no_altdraw(self, child): |
| if child in self.altdraw_interest: |
| self.altdraw_interest.remove(child) |
| if not self.altdraw_interest: |
| self.parent.no_altdraw(self) |
| # |
| # The rest are transparent: |
| # |
| def begindrawing(self): |
| return self.parent.begindrawing() |
| def beginmeasuring(self): |
| return self.parent.beginmeasuring() |
| def getwindow(self): |
| return self.parent.getwindow() |
| # |
| 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) |