From c88716665a62399efa6278b5eaa254434a77a305 Mon Sep 17 00:00:00 2001
From: Carl Hetherington <carl@carlh.net>
Date: Sat, 2 Jan 2010 02:10:49 +0000
Subject: [PATCH] Fix confusion between model and view points when dragging
 ranges.  Clamp both top and bottom when dragging vertically.  Fix some wacky
 formatting.

git-svn-id: svn://localhost/ardour2/branches/3.0@6436 d708f5d6-7413-0410-9779-e7cbd77b26cf
---
 gtk2_ardour/automation_line.cc | 12 +++++++++---
 gtk2_ardour/editor_drag.cc     | 11 ++++-------
 2 files changed, 13 insertions(+), 10 deletions(-)

diff --git a/gtk2_ardour/automation_line.cc b/gtk2_ardour/automation_line.cc
index ac50ac44db..7286b20bdf 100644
--- a/gtk2_ardour/automation_line.cc
+++ b/gtk2_ardour/automation_line.cc
@@ -770,12 +770,17 @@ AutomationLine::drag_motion (nframes_t x, float fraction, bool with_push)
 	double dy = fraction - _last_drag_fraction;
 	_last_drag_fraction = fraction;
 
-	/* clamp y so that the "lowest" point hits the bottom but goes no further */
+	/* clamp y so that the "lowest" point hits the bottom but goes no further
+	   and similarly with the "highest" and the top
+	*/
 	for (list<ControlPoint*>::iterator i = _drag_points.begin(); i != _drag_points.end(); ++i) {
 		double const y = ((_height - (*i)->get_y()) / _height) + dy;
 		if (y < 0) {
 			dy -= y;
 		}
+		if (y > 1) {
+			dy -= (y - 1);
+		}
 	}
 
 	for (list<ControlPoint*>::iterator i = _drag_points.begin(); i != _drag_points.end(); ++i) {
@@ -1072,8 +1077,9 @@ AutomationLine::set_selected_points (PointSelection& points)
 
 }
 
-void AutomationLine::set_colors() {
-	set_line_color( ARDOUR_UI::config()->canvasvar_AutomationLine.get() );
+void AutomationLine::set_colors()
+{
+	set_line_color (ARDOUR_UI::config()->canvasvar_AutomationLine.get());
 	for (vector<ControlPoint*>::iterator i = control_points.begin(); i != control_points.end(); ++i) {
 		(*i)->show_color (false, !points_visible);
 	}
diff --git a/gtk2_ardour/editor_drag.cc b/gtk2_ardour/editor_drag.cc
index 5920e08afa..ca2468cd2c 100644
--- a/gtk2_ardour/editor_drag.cc
+++ b/gtk2_ardour/editor_drag.cc
@@ -3577,21 +3577,18 @@ AutomationRangeDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
 		}
 
 		uint32_t const N = _line->npoints ();
-		AutomationList::const_iterator j = the_list->begin ();
 		for (uint32_t i = 0; i < N; ++i) {
 
 			ControlPoint* p = _line->nth (i);
 
-			list<AudioRange>::const_iterator k = _ranges.begin ();
-			while (k != _ranges.end() && (k->start >= (*j)->when || k->end <= (*j)->when)) {
-				++k;
+			list<AudioRange>::const_iterator j = _ranges.begin ();
+			while (j != _ranges.end() && (j->start >= (*p->model())->when || j->end <= (*p->model())->when)) {
+				++j;
 			}
 
-			if (k != _ranges.end()) {
+			if (j != _ranges.end()) {
 				points.push_back (p);
 			}
-
-			++j;
 		}
 	}