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fix drags of a single control point in a line where that is the only control point 

git-svn-id: svn://localhost/ardour2/branches/3.0@13802 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
Paul Davis 2013-01-07 20:10:18 +00:00
parent ecbc6672c7
commit bc8ccfa768
1 changed files with 14 additions and 5 deletions
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19
gtk2_ardour/automation_line.cc
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@ -507,15 +507,22 @@ AutomationLine::ContiguousControlPoints::ContiguousControlPoints (AutomationLine
void
AutomationLine::ContiguousControlPoints::compute_x_bounds ()
{
if (!empty()) {
uint32_t sz = size();
if (sz > 0 && sz < line.npoints()) {
/* determine the limits on x-axis motion for this
contiguous range of control points
*/
if (front()->view_index() > 0) {
before_x = line.nth (front()->view_index() - 1)->get_x();
}
/* if our last point has a point after it in the line,
we have an "after" bound
*/
if (back()->view_index() < (line.npoints() - 2)) {
after_x = line.nth (back()->view_index() + 1)->get_x();
}
@ -674,8 +681,10 @@ AutomationLine::drag_motion (double const x, float fraction, bool ignore_x, bool
/* update actual line coordinates (will queue a redraw)
*/
line->property_points() = line_points;
if (line_points.size() > 1) {
line->property_points() = line_points;
}
}
_drag_distance += dx;