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flowbox: Implement get_child_at_pos properly

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With transforms in the mix, checking if the coordinate is inside the
widget "allocation" makes even less sense. Just use gtk_widget_pick()
and walk up until we find a GtkFlowBoxChild.
This commit is contained in:
Timm Bäder 2019-02-14 07:11:34 +01:00
parent ca2c05cdb3
commit c9d9f8b750
1 changed files with 5 additions and 17 deletions
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22
gtk/gtkflowbox.c
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@ -3918,7 +3918,7 @@ gtk_flow_box_get_child_at_index (GtkFlowBox *box,
* @y: the y coordinate of the child
*
* Gets the child in the (@x, @y) position. Both @x and @y are
* assumed to be relative to the allocation of @box.
* assumed to be relative to the origin of @box.
*
* Returns: (transfer none) (nullable): the child widget, which will
* always be a #GtkFlowBoxChild or %NULL in case no child widget
@ -3929,24 +3929,12 @@ gtk_flow_box_get_child_at_pos (GtkFlowBox *box,
gint x,
gint y)
{
GtkWidget *child;
GSequenceIter *iter;
GtkAllocation allocation;
for (iter = g_sequence_get_begin_iter (BOX_PRIV (box)->children);
!g_sequence_iter_is_end (iter);
iter = g_sequence_iter_next (iter))
{
child = g_sequence_get (iter);
if (!child_is_visible (child))
continue;
gtk_widget_get_allocation (child, &allocation);
if (gdk_rectangle_contains_point (&allocation, x, y))
return GTK_FLOW_BOX_CHILD (child);
}
GtkWidget *child = gtk_widget_pick (GTK_WIDGET (box), x, y);
if (!child)
return NULL;
return (GtkFlowBoxChild *)gtk_widget_get_ancestor (child, GTK_TYPE_FLOW_BOX_CHILD);
}
/**