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  • Committer: Mathieu Trudel-Lapierre
  • Date: 2018-05-28 14:03:50 UTC
  • Revision ID: mathieu.trudel-lapierre@canonical.com-20180528140350-5a2az99zuqs3rzj5
https://launchpad.net/bugs/1637180
Block style context changed signal while enforcing the main window's
constant size. Thanks to Thomas Waldmann and Sebastien Bacher for the
initial analysis of  this bug. (LP: #1637180)

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UpdateManager/UpdateManager.py
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from gi.repository import Gdk, GdkX11
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from gi.repository import Gio
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from gi.repository import GLib
 
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from gi.repository import GObject
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GdkX11  # pyflakes
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        # Keep window at a constant size
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        ctx = self.get_style_context()
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        ctx.connect("changed", lambda ctx: self.resize_to_standard_width())
 
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        self.style_changed = ctx.connect("changed",
 
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                                         lambda ctx:
 
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                                             self.resize_to_standard_width())
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        # Signals
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        self.connect("delete-event", self._on_close)
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        if dpi <= 0:
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            dpi = 96
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        ctx = self.get_style_context()
 
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        GObject.signal_handler_block(ctx, self.signal_changed)
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        size = ctx.get_property("font-size", Gtk.StateFlags.NORMAL)
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        width = dpi / 72 * size * num_em
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        self.set_size_request(width, -1)
 
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        GObject.signal_handler_unblock(ctx, self.signal_changed)
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    def on_initial_focus_in(self, widget, event):
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        """callback run on initial focus-in (if started unmapped)"""