Make it easier to move the summary rectangle around when it is narrow or low in height.

git-svn-id: svn://localhost/ardour2/branches/3.0@7730 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 12 insertions, 5 deletions

diff --git a/gtk2_ardour/editor_summary.cc b/gtk2_ardour/editor_summary.cc
index c87d914317..69dd3772cb 100644
--- a/gtk2_ardour/editor_summary.cc
+++ b/gtk2_ardour/editor_summary.cc
@@ -363,12 +363,19 @@ EditorSummary::get_position (double x, double y) const
 {
 	/* how close the mouse has to be to the edge of the view rectangle to be considered `on it',
 	   in pixels */
-	int const edge_size = 8;
+
+	int x_edge_size = (_view_rectangle_x.second - _view_rectangle_x.first) / 4;
+	x_edge_size = min (x_edge_size, 8);
+	x_edge_size = max (x_edge_size, 1);
+
+	int y_edge_size = (_view_rectangle_y.second - _view_rectangle_y.first) / 4;
+	y_edge_size = min (y_edge_size, 8);
+	y_edge_size = max (y_edge_size, 1);
 	
-	bool const near_left = (std::abs (x - _view_rectangle_x.first) < edge_size);
-	bool const near_right = (std::abs (x - _view_rectangle_x.second) < edge_size);
- 	bool const near_top = (std::abs (y - _view_rectangle_y.first) < edge_size);
- 	bool const near_bottom = (std::abs (y - _view_rectangle_y.second) < edge_size);
+	bool const near_left = (std::abs (x - _view_rectangle_x.first) < x_edge_size);
+	bool const near_right = (std::abs (x - _view_rectangle_x.second) < x_edge_size);
+ 	bool const near_top = (std::abs (y - _view_rectangle_y.first) < y_edge_size);
+ 	bool const near_bottom = (std::abs (y - _view_rectangle_y.second) < y_edge_size);
 	bool const within_x = _view_rectangle_x.first < x && x < _view_rectangle_x.second;
 	bool const within_y = _view_rectangle_y.first < y && y < _view_rectangle_y.second;