90 lines
4.0 KiB
Python
90 lines
4.0 KiB
Python
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# -*- coding:utf-8 -*-
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# Copyright (C) 2015 Patrick Griffis <tingping@tingping.se>
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# Copyright (C) 2014 Christian Hergert <christian@hergert.me>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranties of
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# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
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# PURPOSE. See the GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program. If not, see <http://www.gnu.org/licenses/>.
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from gi.repository import GObject, Gtk
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class ScrolledWindow(Gtk.ScrolledWindow):
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"""
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ScrolledWindow that sets a max size for the child to grow into.
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Taken from the Gnome Builder project:
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https://git.gnome.org/browse/gnome-builder/tree/contrib/egg/egg-scrolled-window.c
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"""
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__gtype_name__ = "EggScrolledWindow"
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max_content_height = GObject.Property(type=int, default=-1, nick="Max Content Height",
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blurb="The maximum height request that can be made")
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max_content_width = GObject.Property(type=int, default=-1, nick="Max Content Width",
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blurb="The maximum width request that can be made")
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min_content_height = GObject.Property(type=int, default=-1, nick="Min Content Height",
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blurb="The minimum height request that can be made")
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.connect_after("notify::max-content-height", lambda obj, param: self.queue_resize())
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self.connect_after("notify::max-content-width", lambda obj, param: self.queue_resize())
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def set_min_content_height(self, value):
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self.min_content_height = value
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def set_max_content_height(self, value):
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self.max_content_height = value
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def set_max_content_width(self, value):
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self.max_content_width = value
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def get_max_content_height(self):
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return self.max_content_height
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def get_max_content_width(self):
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return self.max_content_width
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def do_get_preferred_height(self):
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min_height, natural_height = Gtk.ScrolledWindow.do_get_preferred_height(self)
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child = self.get_child()
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if natural_height and self.max_content_height > -1 and child:
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style = self.get_style_context()
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border = style.get_border(style.get_state())
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additional = border.top + border.bottom
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child_min_height, child_nat_height = child.get_preferred_height()
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if child_nat_height > natural_height and self.max_content_height > natural_height:
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natural_height = min(self.max_content_height, child_nat_height) + additional
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elif natural_height > child_nat_height:
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if child_nat_height < self.min_content_height:
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return self.min_content_height, self.min_content_height
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min_height, natural_height = child_min_height + additional, child_nat_height + additional
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return min_height, natural_height
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def do_get_preferred_width(self):
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min_width, natural_width = Gtk.ScrolledWindow.do_get_preferred_width(self)
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child = self.get_child()
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if natural_width and self.max_content_width > -1 and child:
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style = self.get_style_context()
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border = style.get_border(style.get_state())
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additional = border.left + border.right + 1
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child_min_width, child_nat_width = child.get_preferred_width()
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if child_nat_width > natural_width and self.max_content_width > natural_width:
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natural_width = min(self.max_content_width, child_nat_width) + additional
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return min_width, natural_width
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