lithid · February 20, 2013 02:05 · Feb 20, 2013
diff --git a/Grid b/Grid
@@ -0,0 +1,90 @@
+#!/usr/bin/env python2
+from gi.repository import Gtk
+
+class Grid(Gtk.Window):
+	widget_list = []
+	WIDGET_SIZE = 140
+	COLS = 1
+	NUM = 100
+
+	def calcule_columns(self, scroll, grid):
+		cols = scroll.get_allocated_width() / (self.WIDGET_SIZE + grid.get_column_spacing())
+		if (cols > len(self.widget_list)): cols = len(self.widget_list)
+		return cols
+
+	def on_resize(self, arg1, arg2, scroll, grid):
+		new_cols = self.calcule_columns(scroll, grid)
+		if  new_cols == self.COLS or new_cols == 0 or new_cols > len(self.widget_list): return
+		self.COLS = new_cols
+		self.remove_widgets(grid)
+		self.load_widgets(grid)
+
+	def remove_widgets(self, grid):
+		if self.widget_list == 0: return
+		for wid in grid.get_children():
+			grid.remove(wid)
+
+	def create_grid(self):
+		grid = Gtk.Grid()
+		grid.set_column_spacing(10)
+		grid.set_row_spacing(10)
+		grid.set_column_homogeneous(True)
+		grid.set_row_homogeneous(False)
+		grid.set_border_width(0)
+		return grid
+
+	def load_widgets(self, grid):
+		i,j = 0,0
+		COLS = self.COLS
+
+		if len(self.widget_list) == 0: return
+
+		for wid in self.widget_list:
+			grid.attach(wid, i, j, 1, 1)
+			i+=1
+			if i == COLS:
+				i=0
+				j+=1
+
+	def __init__(self):
+		def callback(widget):
+			this = widget.get_label()
+			dialog = Gtk.MessageDialog(None, Gtk.DialogFlags.MODAL,
+				message_type=Gtk.MessageType.QUESTION,
+				buttons=Gtk.ButtonsType.OK)
+			dialog.set_title("Window title %s" % this.split(" ")[1])
+			dialog.set_markup("You chose <b>%s</b>, try it again!" % this)
+			dialog.run()
+			dialog.destroy()
+
+		Gtk.Window.__init__(self, title="Grid")
+
+		self.resize(self.WIDGET_SIZE*6, self.WIDGET_SIZE*2)
+		self.set_position(Gtk.WindowPosition.CENTER)
+
+		grid_main = self.create_grid()
+		viewport = Gtk.Viewport(None, None);
+		viewport.add(grid_main)
+		viewport.set_shadow_type (Gtk.ShadowType.NONE)
+		scroll = Gtk.ScrolledWindow()
+		scroll.set_border_width(0)
+		scroll.add(viewport)
+		scroll.connect("size-allocate", self.on_resize, scroll, grid_main)
+		scroll.set_policy(Gtk.PolicyType.AUTOMATIC, Gtk.PolicyType.AUTOMATIC)
+		self.add(scroll)
+
+		z = 1
+		while z is not self.NUM+1:
+			button = Gtk.Button()
+			button.set_label("Button %s" % z)
+			button.connect("clicked", callback)
+			self.widget_list.append(button)
+			z+=1
+
+		self.load_widgets(grid_main)
+
+
+win = Grid()
+win.connect("delete-event", Gtk.main_quit)
+win.show_all()
+Gtk.main()