add VU and IEC meter DSP (from jmeters)
[ardour.git] / gtk2_ardour / automation_line.cc
index 6586aed966350a0fa79a5765784c4aea4e8d73e4..17e07924778ff40e45aa38eefa35a0f2f1b4e6ff 100644 (file)
 #include <vector>
 #include <fstream>
 
-#include "pbd/stl_delete.h"
+#include "boost/shared_ptr.hpp"
+
+#include "pbd/floating.h"
 #include "pbd/memento_command.h"
+#include "pbd/stl_delete.h"
 #include "pbd/stacktrace.h"
 
 #include "ardour/automation_list.h"
@@ -32,7 +35,6 @@
 
 #include "evoral/Curve.hpp"
 
-#include "simplerect.h"
 #include "automation_line.h"
 #include "control_point.h"
 #include "gui_thread.h"
@@ -54,7 +56,6 @@ using namespace std;
 using namespace ARDOUR;
 using namespace PBD;
 using namespace Editing;
-using namespace Gnome; // for Canvas
 
 /** @param converter A TimeConverter whose origin_b is the start time of the AutomationList in session frames.
  *  This will not be deleted by AutomationLine.
@@ -88,15 +89,13 @@ AutomationLine::AutomationLine (const string& name, TimeAxisView& tv, ArdourCanv
        terminal_points_can_slide = true;
        _height = 0;
 
-       group = new ArdourCanvas::Group (parent);
-       group->property_x() = 0.0;
-       group->property_y() = 0.0;
+       group = new ArdourCanvas::Group (&parent);
 
-       line = new ArdourCanvas::Line (*group);
-       line->property_width_pixels() = (guint)1;
+       line = new ArdourCanvas::Curve (group);
        line->set_data ("line", this);
+       line->set_outline_width (2.0);
 
-       line->signal_event().connect (sigc::mem_fun (*this, &AutomationLine::event_handler));
+       line->Event.connect (sigc::mem_fun (*this, &AutomationLine::event_handler));
 
        trackview.session()->register_with_memento_command_factory(alist->id(), this);
 
@@ -201,7 +200,7 @@ void
 AutomationLine::set_line_color (uint32_t color)
 {
        _line_color = color;
-       line->property_fill_color_rgba() = color;
+       line->set_outline_color (color);
 }
 
 void
@@ -244,7 +243,7 @@ AutomationLine::modify_point_y (ControlPoint& cp, double y)
        y = min (1.0, y);
        y = _height - (y * _height);
 
-       double const x = trackview.editor().frame_to_unit_unrounded (_time_converter->to((*cp.model())->when) - _offset);
+       double const x = trackview.editor().sample_to_pixel_unrounded (_time_converter->to((*cp.model())->when) - _offset);
 
        trackview.editor().session()->begin_reversible_command (_("automation event move"));
        trackview.editor().session()->add_command (
@@ -256,7 +255,7 @@ AutomationLine::modify_point_y (ControlPoint& cp, double y)
        reset_line_coords (cp);
 
        if (line_points.size() > 1) {
-               line->property_points() = line_points;
+               line->set (line_points);
        }
 
        alist->freeze ();
@@ -277,8 +276,8 @@ void
 AutomationLine::reset_line_coords (ControlPoint& cp)
 {
        if (cp.view_index() < line_points.size()) {
-               line_points[cp.view_index()].set_x (cp.get_x());
-               line_points[cp.view_index()].set_y (cp.get_y());
+               line_points[cp.view_index()].x = cp.get_x ();
+               line_points[cp.view_index()].y = cp.get_y ();
        }
 }
 
@@ -462,6 +461,7 @@ AutomationLine::start_drag_line (uint32_t i1, uint32_t i2, float fraction)
                );
 
        _drag_points.clear ();
+
        for (uint32_t i = i1; i <= i2; i++) {
                _drag_points.push_back (nth (i));
        }
@@ -485,14 +485,82 @@ AutomationLine::start_drag_multiple (list<ControlPoint*> cp, float fraction, XML
        start_drag_common (0, fraction);
 }
 
-
 struct ControlPointSorter
 {
-       bool operator() (ControlPoint const * a, ControlPoint const * b) {
+       bool operator() (ControlPoint const * a, ControlPoint const * b) const {
+               if (floateq (a->get_x(), b->get_x(), 1)) {
+                       return a->view_index() < b->view_index();
+               } 
                return a->get_x() < b->get_x();
        }
 };
 
+AutomationLine::ContiguousControlPoints::ContiguousControlPoints (AutomationLine& al)
+       : line (al), before_x (0), after_x (DBL_MAX) 
+{
+}
+
+void
+AutomationLine::ContiguousControlPoints::compute_x_bounds ()
+{
+       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();
+               }
+       }
+}
+
+double 
+AutomationLine::ContiguousControlPoints::clamp_dx (double dx) 
+{
+       if (empty()) {
+               return dx;
+       }
+
+       /* get the maximum distance we can move any of these points along the x-axis
+        */
+       
+       double tx; /* possible position a point would move to, given dx */
+       ControlPoint* cp;
+       
+       if (dx > 0) {
+               /* check the last point, since we're moving later in time */
+               cp = back();
+       } else {
+               /* check the first point, since we're moving earlier in time */
+               cp = front();
+       }
+
+       tx = cp->get_x() + dx; // new possible position if we just add the motion 
+       tx = max (tx, before_x); // can't move later than following point
+       tx = min (tx, after_x);  // can't move earlier than preceeding point
+       return  tx - cp->get_x (); 
+}
+
+void 
+AutomationLine::ContiguousControlPoints::move (double dx, double dy) 
+{
+       for (std::list<ControlPoint*>::iterator i = begin(); i != end(); ++i) {
+               (*i)->move_to ((*i)->get_x() + dx, (*i)->get_y() - line.height() * dy, ControlPoint::Full);
+               line.reset_line_coords (**i);
+       }
+}
+
 /** Common parts of starting a drag.
  *  @param x Starting x position in units, or 0 if x is being ignored.
  *  @param fraction Starting y position (as a fraction of the track height, where 0 is the bottom and 1 the top)
@@ -506,88 +574,80 @@ AutomationLine::start_drag_common (double x, float fraction)
        _drag_had_movement = false;
        did_push = false;
 
-       _drag_points.sort (ControlPointSorter ());
+       /* they are probably ordered already, but we have to make sure */
 
-       /* find the additional points that will be dragged when the user is holding
-          the "push" modifier
-       */
-
-       uint32_t i = _drag_points.back()->view_index () + 1;
-       ControlPoint* p = 0;
-       _push_points.clear ();
-       while ((p = nth (i)) != 0 && p->can_slide()) {
-               _push_points.push_back (p);
-               ++i;
-       }
+       _drag_points.sort (ControlPointSorter());
 }
 
+
 /** Should be called to indicate motion during a drag.
  *  @param x New x position of the drag in canvas units, or undefined if ignore_x == true.
  *  @param fraction New y fraction.
  *  @return x position and y fraction that were actually used (once clamped).
  */
 pair<double, float>
-AutomationLine::drag_motion (double const x, float fraction, bool ignore_x, bool with_push)
+AutomationLine::drag_motion (double const x, float fraction, bool ignore_x, bool with_push, uint32_t& final_index)
 {
-       /* setup the points that are to be moved this time round */
-       list<ControlPoint*> points = _drag_points;
-       if (with_push) {
-               copy (_push_points.begin(), _push_points.end(), back_inserter (points));
-               points.sort (ControlPointSorter ());
+       if (_drag_points.empty()) {
+               return pair<double,float> (x,fraction);
        }
 
        double dx = ignore_x ? 0 : (x - _drag_x);
        double dy = fraction - _last_drag_fraction;
 
-       for (list<ControlPoint*>::iterator i = points.begin(); i != points.end(); ++i) {
-               /* Find the points that aren't being moved before and after
-                  this one on the control_points list
-               */
+       if (!_drag_had_movement) {
 
-               ControlPoint* before = 0;
-               ControlPoint* after = 0;
-
-               ControlPoint* last = 0;
-               for (vector<ControlPoint*>::iterator j = control_points.begin(); j != control_points.end(); ++j) {
-
-                       if (*j == *i) {
-                               
-                               before = last;
-                               
-                               vector<ControlPoint*>::iterator k = j;
-
-                               /* Next point */
-                               ++k;
-
-                               /* Now move past any points that are being moved this time */
-                               while (find (points.begin(), points.end(), *k) != points.end() && k != control_points.end ()) {
-                                       ++k;
-                               }
-                               
-                               if (k != control_points.end()) {
-                                       after = *k;
-                               }
-                               break;
+               /* "first move" ... do some stuff that we don't want to do if 
+                  no motion ever took place, but need to do before we handle
+                  motion.
+               */
+       
+               /* partition the points we are dragging into (potentially several)
+                * set(s) of contiguous points. this will not happen with a normal
+                * drag, but if the user does a discontiguous selection, it can.
+                */
+               
+               uint32_t expected_view_index = 0;
+               CCP contig;
+               
+               for (list<ControlPoint*>::iterator i = _drag_points.begin(); i != _drag_points.end(); ++i) {
+                       if (i == _drag_points.begin() || (*i)->view_index() != expected_view_index) {
+                               contig.reset (new ContiguousControlPoints (*this));
+                               contiguous_points.push_back (contig);
                        }
+                       contig->push_back (*i);
+                       expected_view_index = (*i)->view_index() + 1;
+               }
 
-                       if (find (points.begin(), points.end(), *j) == points.end ()) {
-                               /* This point isn't being moved, so it's the `last' point we've seen */
-                               last = *j;
-                       }
+               if (contiguous_points.back()->empty()) {
+                       contiguous_points.pop_back ();
                }
 
-               /* Clamp dx for this point */
-               double const before_x = before ? before->get_x() : 0;
-               double const after_x = after ? after->get_x() : DBL_MAX;
+               for (vector<CCP>::iterator ccp = contiguous_points.begin(); ccp != contiguous_points.end(); ++ccp) {
+                       (*ccp)->compute_x_bounds ();
+               }
+       }       
+
+       /* OK, now on to the stuff related to *this* motion event. First, for
+        * each contiguous range, figure out the maximum x-axis motion we are
+        * allowed (because of neighbouring points that are not moving.
+        * 
+        * if we are moving forwards with push, we don't need to do this, 
+        * since all later points will move too.
+        */
 
-               double tx = (*i)->get_x() + dx;
-               tx = max (tx, before_x);
-               tx = min (tx, after_x);
-               dx = tx - (*i)->get_x ();
+       if (dx < 0 || ((dx > 0) && !with_push)) {
+               for (vector<CCP>::iterator ccp = contiguous_points.begin(); ccp != contiguous_points.end(); ++ccp) {
+                       double dxt = (*ccp)->clamp_dx (dx);
+                       if (fabs (dxt) < fabs (dx)) {
+                               dx = dxt;
+                       }
+               }
        }
 
        /* clamp y */
-       for (list<ControlPoint*>::iterator i = points.begin(); i != points.end(); ++i) {
+       
+       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;
@@ -597,55 +657,61 @@ AutomationLine::drag_motion (double const x, float fraction, bool ignore_x, bool
                }
        }
 
-       pair<double, float> const clamped (_drag_x + dx, _last_drag_fraction + dy);
-       _drag_distance += dx;
-       _drag_x += dx;
-       _last_drag_fraction = fraction;
-
-       for (list<ControlPoint*>::iterator i = _drag_points.begin(); i != _drag_points.end(); ++i) {
-               (*i)->move_to ((*i)->get_x() + dx, (*i)->get_y() - _height * dy, ControlPoint::Full);
-               reset_line_coords (**i);
-       }
+       if (dx || dy) {
 
-       if (with_push) {
-               /* move push points, preserving their y */
-               for (list<ControlPoint*>::iterator i = _push_points.begin(); i != _push_points.end(); ++i) {
-                       (*i)->move_to ((*i)->get_x() + dx, (*i)->get_y(), ControlPoint::Full);
-                       reset_line_coords (**i);
+               /* and now move each section */
+               
+               for (vector<CCP>::iterator ccp = contiguous_points.begin(); ccp != contiguous_points.end(); ++ccp) {
+                       (*ccp)->move (dx, dy);
+               }
+               if (with_push) {
+                       final_index = contiguous_points.back()->back()->view_index () + 1;
+                       ControlPoint* p;
+                       uint32_t i = final_index;
+                       while ((p = nth (i)) != 0 && p->can_slide()) {
+                               p->move_to (p->get_x() + dx, p->get_y(), ControlPoint::Full);
+                               reset_line_coords (*p);
+                               ++i;
+                       }
                }
-       }
 
-       if (line_points.size() > 1) {
-               line->property_points() = line_points;
-       }
+               /* update actual line coordinates (will queue a redraw)
+                */
 
-       _drag_had_movement = true;
-       if (with_push) {
-               did_push = with_push;
+               if (line_points.size() > 1) {
+                       line->set (line_points);
+               }
        }
+       
+       _drag_distance += dx;
+       _drag_x += dx;
+       _last_drag_fraction = fraction;
+       _drag_had_movement = true;
+       did_push = with_push;
 
-       return clamped;
+       return pair<double, float> (_drag_x + dx, _last_drag_fraction + dy);
 }
 
 /** Should be called to indicate the end of a drag */
 void
-AutomationLine::end_drag ()
+AutomationLine::end_drag (bool with_push, uint32_t final_index)
 {
        if (!_drag_had_movement) {
                return;
        }
 
        alist->freeze ();
+       sync_model_with_view_points (_drag_points);
 
-       /* set up the points that were moved this time round */
-       list<ControlPoint*> points = _drag_points;
-       if (did_push) {
-               copy (_push_points.begin(), _push_points.end(), back_inserter (points));
-               points.sort (ControlPointSorter ());
+       if (with_push) {
+               ControlPoint* p;
+               uint32_t i = final_index;
+               while ((p = nth (i)) != 0 && p->can_slide()) {
+                       sync_model_with_view_point (*p);
+                       ++i;
+               }
        }
 
-       sync_model_with_view_points (points);
-
        alist->thaw ();
 
        update_pending = false;
@@ -656,6 +722,8 @@ AutomationLine::end_drag ()
 
        trackview.editor().session()->set_dirty ();
        did_push = false;
+
+       contiguous_points.clear ();
 }
 
 void
@@ -671,10 +739,10 @@ AutomationLine::sync_model_with_view_point (ControlPoint& cp)
 
        /* if xval has not changed, set it directly from the model to avoid rounding errors */
 
-       if (view_x == trackview.editor().frame_to_unit_unrounded (_time_converter->to ((*cp.model())->when)) - _offset) {
+       if (view_x == trackview.editor().sample_to_pixel_unrounded (_time_converter->to ((*cp.model())->when)) - _offset) {
                view_x = (*cp.model())->when - _offset;
        } else {
-               view_x = trackview.editor().unit_to_frame (view_x);
+               view_x = trackview.editor().pixel_to_sample (view_x);
                view_x = _time_converter->from (view_x + _offset);
        }
 
@@ -692,7 +760,7 @@ AutomationLine::control_points_adjacent (double xval, uint32_t & before, uint32_
        ControlPoint *acp = 0;
        double unit_xval;
 
-       unit_xval = trackview.editor().frame_to_unit_unrounded (xval);
+       unit_xval = trackview.editor().sample_to_pixel_unrounded (xval);
 
        for (vector<ControlPoint*>::iterator i = control_points.begin(); i != control_points.end(); ++i) {
 
@@ -769,9 +837,7 @@ AutomationLine::remove_point (ControlPoint& cp)
  *  @param result Filled in with selectable things; in this case, ControlPoints.
  */
 void
-AutomationLine::get_selectables (
-       framepos_t start, framepos_t end, double botfrac, double topfrac, list<Selectable*>& results
-       )
+AutomationLine::get_selectables (framepos_t start, framepos_t end, double botfrac, double topfrac, list<Selectable*>& results)
 {
        /* convert fractions to display coordinates with 0 at the top of the track */
        double const bot_track = (1 - topfrac) * trackview.current_height ();
@@ -814,7 +880,7 @@ AutomationLine::set_selected_points (PointSelection const & points)
 
 void AutomationLine::set_colors ()
 {
-       set_line_color (ARDOUR_UI::config()->canvasvar_AutomationLine.get());
+       set_line_color (ARDOUR_UI::config()->get_canvasvar_AutomationLine());
        for (vector<ControlPoint*>::iterator i = control_points.begin(); i != control_points.end(); ++i) {
                (*i)->set_color ();
        }
@@ -881,7 +947,7 @@ AutomationLine::reset_callback (const Evoral::ControlList& events)
                 * zoom and scroll into account).
                 */
                        
-               tx = trackview.editor().frame_to_unit_unrounded (tx);
+               tx = trackview.editor().sample_to_pixel_unrounded (tx);
                
                /* convert from canonical view height (0..1.0) to actual
                 * height coordinates (using X11's top-left rooted system)
@@ -910,7 +976,7 @@ AutomationLine::reset_callback (const Evoral::ControlList& events)
                /* reset the line coordinates given to the CanvasLine */
 
                while (line_points.size() < vp) {
-                       line_points.push_back (Art::Point (0,0));
+                       line_points.push_back (ArdourCanvas::Duple (0,0));
                }
 
                while (line_points.size() > vp) {
@@ -918,11 +984,11 @@ AutomationLine::reset_callback (const Evoral::ControlList& events)
                }
 
                for (uint32_t n = 0; n < vp; ++n) {
-                       line_points[n].set_x (control_points[n]->get_x());
-                       line_points[n].set_y (control_points[n]->get_y());
+                       line_points[n].x = control_points[n]->get_x();
+                       line_points[n].y = control_points[n]->get_y();
                }
 
-               line->property_points() = line_points;
+               line->set (line_points);
 
                if (_visible && alist->interpolation() != AutomationList::Discrete) {
                        line->show();