ScrolledWindow: Don’t req size for autohidden bars

POLICY_AUTOMATIC means scrollbars are only shown when needed, i.e. when
the size of the window is not large enough to show the entire child. So
when measuring the preferred size, such scrollbars should be ignored.

But measure() added size for *any* non-overlay scrollbar of the opposite
orientation, e.g. for horizontal size, it added the width of vscrollbar.
So we requested for child + bar, & having enough for child meant that the
policy hid the bar, leaving extra space empty below/right of the child.

Fix this by only adding size for such bars if they use POLICY_ALWAYS.

https://bugzilla.gnome.org/show_bug.cgi?id=778853
This commit is contained in:
Daniel Boles 2017-02-24 22:46:05 +00:00
parent 1a95c259d7
commit a96c586450

View File

@ -1765,7 +1765,7 @@ gtk_scrolled_window_measure (GtkCssGadget *gadget,
minimum_req = MAX (minimum_req, hscrollbar_requisition.width + sborder.left + sborder.right);
natural_req = MAX (natural_req, hscrollbar_requisition.width + sborder.left + sborder.right);
}
else if (!priv->use_indicators)
else if (!priv->use_indicators && priv->hscrollbar_policy == GTK_POLICY_ALWAYS)
{
minimum_req += hscrollbar_requisition.height;
natural_req += hscrollbar_requisition.height;
@ -1782,7 +1782,7 @@ gtk_scrolled_window_measure (GtkCssGadget *gadget,
minimum_req = MAX (minimum_req, vscrollbar_requisition.height + sborder.top + sborder.bottom);
natural_req = MAX (natural_req, vscrollbar_requisition.height + sborder.top + sborder.bottom);
}
else if (!priv->use_indicators)
else if (!priv->use_indicators && priv->vscrollbar_policy == GTK_POLICY_ALWAYS)
{
minimum_req += vscrollbar_requisition.width;
natural_req += vscrollbar_requisition.width;