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textview: Don't leave embedded children behind

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When scrolling embedded widgets out of view,
they sometimes get left behind because we don't
reallocated them. To avoid that, move _all_ children
out of view in size_allocate, and let the current
child allocation plumbing move the visible ones
back in place.
This commit is contained in:
Matthias Clasen 2021-11-05 18:54:06 -04:00
parent 1c6efea370
commit 4c029af6cd
1 changed files with 11 additions and 0 deletions
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11
gtk/gtktextview.c
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@ -4409,6 +4409,8 @@ gtk_text_view_allocate_children (GtkTextView *text_view)
{
const AnchoredChild *child = iter->data;
GtkTextIter child_loc;
GtkRequisition child_req;
GtkAllocation allocation;
/* We need to force-validate the regions containing children. */
gtk_text_buffer_get_iter_at_child_anchor (get_buffer (text_view),
@ -4429,6 +4431,15 @@ gtk_text_view_allocate_children (GtkTextView *text_view)
}
gtk_text_layout_validate_yrange (priv->layout, &child_loc, 0, 1);
gtk_widget_get_preferred_size (child->widget, &child_req, NULL);
allocation.x = - child_req.width;
allocation.y = - child_req.height;
allocation.width = child_req.width;
allocation.height = child_req.height;
gtk_widget_size_allocate (child->widget, &allocation, -1);
}
}