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treeview: Use equal areas in the computation of drag dest row positions

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We used to divide the row in thirds vertically, and use the outer thirds for GTK_TREE_VIEW_DROP_BEFORE and AFTER, respectively.

Now we use *fourths*.  This is so that we get equal areas for these:

  GTK_TREE_VIEW_DROP_BEFORE
  GTK_TREE_VIEW_DROP_INTO_OR_BEFORE
  GTK_TREE_VIEW_DROP_INTO_OR_AFTER
  GTK_TREE_VIEW_DROP_AFTER

This makes hovering tree rows much more positive.

Signed-off-by: Federico Mena Quintero <federico@gnome.org>
This commit is contained in:
Federico Mena Quintero 2013-04-19 17:20:12 -05:00
parent a1b9bf7fbc
commit 2db8e25cdb
1 changed files with 6 additions and 6 deletions
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12
gtk/gtktreeview.c
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@ -14420,7 +14420,7 @@ gtk_tree_view_get_dest_row_at_pos (GtkTreeView *tree_view,
gint cell_y;
gint bin_x, bin_y;
gdouble offset_into_row;
gdouble third;
gdouble fourth;
GdkRectangle cell;
GtkTreeViewColumn *column = NULL;
GtkTreePath *tmp_path = NULL;
@ -14442,8 +14442,8 @@ gtk_tree_view_get_dest_row_at_pos (GtkTreeView *tree_view,
if (tree_view->priv->tree == NULL)
return FALSE;
/* If in the top third of a row, we drop before that row; if
* in the bottom third, drop after that row; if in the middle,
/* If in the top fourth of a row, we drop before that row; if
* in the bottom fourth, drop after that row; if in the middle,
* and the row has children, drop into the row.
*/
gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
@ -14470,11 +14470,11 @@ gtk_tree_view_get_dest_row_at_pos (GtkTreeView *tree_view,
tmp_path = NULL;
third = cell.height / 3.0;
fourth = cell.height / 4.0;
if (pos)
{
if (offset_into_row < third)
if (offset_into_row < fourth)
{
*pos = GTK_TREE_VIEW_DROP_BEFORE;
}
@ -14482,7 +14482,7 @@ gtk_tree_view_get_dest_row_at_pos (GtkTreeView *tree_view,
{
*pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
}
else if (offset_into_row < third * 2.0)
else if (offset_into_row < cell.height - fourth)
{
*pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
}