Differenze

Queste sono le differenze tra la revisione selezionata e la versione attuale della pagina.

--- pygtk:resizing [2009/01/14 00:04] – scrolledwindow pietro
+++ pygtk:resizing [2009/01/14 08:20] (versione attuale) – set_size_request pietro
@@ Linea 1: / Linea 1: @@
 ====== resize tweaks ======
-First: the method gtk.Window.resize() doesnt't work with a single argument (as instead does gtk.Widget.set_size_request()). OK, this is documented, though ugly.
+First: the method gtk.Window.resize() doesnt't work with a single argument (setting the other to -1, as instead does gtk.Widget.set_size_request()). OK, this is documented, though ugly.
 Now: if a gtk.Window **w** has size (100,100) and we run the following code:
@@ Linea 32: / Linea 32: @@
           window.set_data('configure handler', new_handler)
-  def set_width(window, width):
+  def get_width(window):
-      ensure_configure_handler(window)
+      width = window.get_data('real width')
+      if not width:
+          width = window.get_size()[0]
+      return width
-      window.set_data('real width', width)
+  def get_height(window):
       height = window.get_data('real height')
       if not height:
           height = window.get_size()[1]
+      return height
+  def set_width(window, width):
+      ensure_configure_handler(window)
+      window.set_data('real width', width)
+      height = get_height(window)
       window.resize(width, height)
@@ Linea 46: / Linea 55: @@
       window.set_data('real height', height)
-      width = window.get_data('real width')
+      width = get_width(window)
-      if not width:
-          width = window.get_size()[0]
       window.resize(width, height)
+==== set_size_request ====
+Notice that set_size_request has a similar problem: if a gtk.Widget **widget**'s get_size_request gives (-1,-1) and I run the following code:
+  widget.set_size_request(100,100)
+  widget.set_size_request(-1, -1)
+, it won't expand at all, nothing will happen. This is an issue if you wanted to use this as a hack to resize the widget but let to the user the possibility to shrink it again; an hackish way to solve this is instead the following code:
+  widget.set_size_request(100,100)
+  gobject.idle_add(widget.set_size_request, -1, -1)
 ====== gtk.ScrolledWindow ======