Initial revision

Lib/lib-stdwin/WindowParent.py

@@ -0,0 +1,92 @@
+# A 'WindowParent' is the only module that uses real stdwin functionality.
+# It is the root of the tree.
+# It should have exactly one child when realized.
+
+import stdwin
+from stdwinevents import *
+
+from TransParent import ManageOneChild
+
+Error = 'WindowParent.Error'	# Exception
+
+class WindowParent() = ManageOneChild():
+	#
+	def create(self, (title, size)):
+		self.title = title
+		self.size = size		# (width, height)
+		self.child = 0			# i.e., no child yet
+		self.win = 0			# i.e., no window yet
+		self.itimer = 0
+		self.do_mouse = 0
+		self.do_timer = 0
+		return self
+	#
+	def need_mouse(self, child): self.do_mouse = 1
+	def no_mouse(self, child): self.do_mouse = 0
+	#
+	def need_timer(self, child): self.do_timer = 1
+	def no_timer(self, child): self.do_timer = 0
+	#
+	def realize(self):
+		if self.win:
+			raise Error, 'realize(): called twice'
+		if not self.child:
+			raise Error, 'realize(): no child'
+		size = self.child.minsize(self.beginmeasuring())
+		self.size = max(self.size[0], size[0]), \
+						max(self.size[1], size[1])
+		stdwin.setdefwinsize(self.size)
+		self.win = stdwin.open(self.title)
+		if self.itimer:
+			self.win.settimer(self.itimer)
+		bounds = (0, 0), self.win.getwinsize()
+		self.child.setbounds(bounds)
+	#
+	def beginmeasuring(self):
+		# Return something with which a child can measure text
+		if self.win:
+			return self.win.begindrawing()
+		else:
+			return stdwin
+	#
+	def begindrawing(self):
+		if self.win:
+			return self.win.begindrawing()
+		else:
+			raise Error, 'begindrawing(): not realized yet'
+	#
+	def change(self, area):
+		if self.win:
+			self.win.change(area)
+	#
+	def scroll(self, args):
+		if self.win:
+			self.win.scroll(args)
+	#
+	def settimer(self, itimer):
+		if self.win:
+			self.win.settimer(itimer)
+		else:
+			self.itimer = itimer
+	#
+	# Only call dispatch if we have a child
+	#
+	def dispatch(self, (type, win, detail)):
+		if win <> self.win:
+			return
+		elif type = WE_DRAW:
+			d = self.win.begindrawing()
+			self.child.draw(d, detail)
+		elif type = WE_MOUSE_DOWN:
+			if self.do_mouse: self.child.mouse_down(detail)
+		elif type = WE_MOUSE_MOVE:
+			if self.do_mouse: self.child.mouse_move(detail)
+		elif type = WE_MOUSE_UP:
+			if self.do_mouse: self.child.mouse_up(detail)
+		elif type = WE_TIMER:
+			if self.do_timer: self.child.timer()
+		elif type = WE_SIZE:
+			self.win.change((0, 0), (10000, 10000)) # XXX
+			bounds = (0, 0), self.win.getwinsize()
+			self.child.setbounds(bounds)
+	#