Fix insane formatting (how did this even happen? copy paste from an email diff or...
[ardour.git] / gtk2_ardour / midi_streamview.cc
index a1deba9ba94d664d4a3337551232987c4e323194..5bb232bdedf116d8b39e70a5daf966a2cd5a5137 100644 (file)
 
 #include <gtkmm2ext/gtk_ui.h>
 
+#include <ardour/midi_diskstream.h>
 #include <ardour/midi_playlist.h>
 #include <ardour/midi_region.h>
 #include <ardour/midi_source.h>
-#include <ardour/midi_diskstream.h>
 #include <ardour/midi_track.h>
-#include <ardour/midi_events.h>
-#include <ardour/smf_source.h>
 #include <ardour/region_factory.h>
+#include <ardour/smf_source.h>
 
-#include "midi_streamview.h"
-#include "region_view.h"
+#include "ardour_ui.h"
+#include "canvas-simplerect.h"
+#include "gui_thread.h"
+#include "lineset.h"
 #include "midi_region_view.h"
+#include "midi_streamview.h"
 #include "midi_time_axis.h"
-#include "canvas-simplerect.h"
-#include "region_selection.h"
-#include "selection.h"
+#include "midi_util.h"
 #include "public_editor.h"
-#include "ardour_ui.h"
+#include "region_selection.h"
+#include "region_view.h"
 #include "rgb_macros.h"
-#include "gui_thread.h"
-#include "utils.h"
+#include "selection.h"
 #include "simplerect.h"
-#include "lineset.h"
+#include "utils.h"
 
 using namespace std;
 using namespace ARDOUR;
@@ -56,38 +56,81 @@ using namespace Editing;
 MidiStreamView::MidiStreamView (MidiTimeAxisView& tv)
        : StreamView (tv)
        , note_range_adjustment(0.0f, 0.0f, 0.0f)
-       , _range(ContentsRange)
+       , _range_dirty(false)
        , _range_sum_cache(-1.0)
        , _lowest_note(60)
-       , _highest_note(60)
+       , _highest_note(71)
+       , _data_note_min(60)
+       , _data_note_max(71)
 {
-       if (tv.is_track())
+       if (tv.is_track()) {
                stream_base_color = ARDOUR_UI::config()->canvasvar_MidiTrackBase.get();
-       else
+       } else {
                stream_base_color = ARDOUR_UI::config()->canvasvar_MidiBusBase.get();
+       }
 
-       use_rec_regions = tv.editor.show_waveforms_recording ();
+       use_rec_regions = tv.editor().show_waveforms_recording ();
 
-       _note_lines = new ArdourCanvas::Lineset(*canvas_group, ArdourCanvas::Lineset::Horizontal);
+       /* use a group dedicated to MIDI underlays. Audio underlays are not in this group. */
+       midi_underlay_group = new ArdourCanvas::Group (*canvas_group);
+       midi_underlay_group->lower_to_bottom();
+
+       /* put the note lines in the timeaxisview's group, so it 
+          can be put below ghost regions from MIDI underlays*/
+       _note_lines = new ArdourCanvas::LineSet(*canvas_group, ArdourCanvas::LineSet::Horizontal);
 
        _note_lines->property_x1() = 0;
        _note_lines->property_y1() = 0;
-       _note_lines->property_x2() = trackview().editor.frame_to_pixel (max_frames);
+       _note_lines->property_x2() = trackview().editor().frame_to_pixel (max_frames);
        _note_lines->property_y2() = 0;
 
-       _note_lines->signal_event().connect (bind (mem_fun (_trackview.editor, &PublicEditor::canvas_stream_view_event), _note_lines, &_trackview));
+       _note_lines->signal_event().connect(bind(
+                       mem_fun(_trackview.editor(), &PublicEditor::canvas_stream_view_event),
+                       _note_lines, &_trackview));
+
+       _note_lines->lower_to_bottom();
 
-       note_range_adjustment.signal_value_changed().connect (mem_fun (*this, &MidiStreamView::note_range_adjustment_changed));
        ColorsChanged.connect(mem_fun(*this, &MidiStreamView::draw_note_lines));
+       
+       note_range_adjustment.set_page_size(_highest_note - _lowest_note);
+       note_range_adjustment.set_value(_lowest_note);
+       
+       note_range_adjustment.signal_value_changed().connect(
+                       mem_fun(*this, &MidiStreamView::note_range_adjustment_changed));
 }
 
 MidiStreamView::~MidiStreamView ()
 {
 }
 
+static void
+veto_note_range(uint8_t& min, uint8_t& max)
+{
+       /* Legal notes, thanks */
+       clamp_to_0_127(min);
+       clamp_to_0_127(max);
+       
+       /* Always display at least one octave in [0, 127] */
+       if (max == 127) {
+               if (min > (127 - 11)) {
+                       min = 127 - 11;
+               }
+       } else if (max < min + 11) {
+               uint8_t d = 11 - (max - min);
+               if (max + d/2 > 127) {
+                       min -= d;
+               } else {
+                       min -= d / 2;
+                       max += d / 2;
+               }
+       }
+       assert(max - min >= 11);
+       assert(max < 127);
+       assert(min < 127);
+}
 
 RegionView*
-MidiStreamView::add_region_view_internal (boost::shared_ptr<Region> r, bool wfd)
+MidiStreamView::add_region_view_internal (boost::shared_ptr<Region> r, bool wfd, bool recording)
 {
        boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion> (r);
 
@@ -104,7 +147,7 @@ MidiStreamView::add_region_view_internal (boost::shared_ptr<Region> r, bool wfd)
                        /* great. we already have a MidiRegionView for this Region. use it again. */
 
                        (*i)->set_valid (true);
-                       (*i)->enable_display(wfd);
+                       
                        display_region(dynamic_cast<MidiRegionView*>(*i), wfd);
 
                        return NULL;
@@ -116,20 +159,10 @@ MidiStreamView::add_region_view_internal (boost::shared_ptr<Region> r, bool wfd)
                
        region_view->init (region_color, false);
        region_views.push_front (region_view);
-       
-       /* follow global waveform setting */
-
-       if (wfd) {
-               region_view->enable_display(true);
-               region_view->midi_region()->midi_source(0)->load_model();
-       }
-
+                       
        /* display events and find note range */
        display_region(region_view, wfd);
 
-       /* always display at least 1 octave range */
-       _highest_note = max(_highest_note, static_cast<uint8_t>(_lowest_note + 11));
-
        /* catch regionview going away */
        region->GoingAway.connect (bind (mem_fun (*this, &MidiStreamView::remove_region_view), region));
        
@@ -144,17 +177,20 @@ MidiStreamView::display_region(MidiRegionView* region_view, bool load_model)
        if ( ! region_view)
                return;
 
+       region_view->enable_display(true);
+
        boost::shared_ptr<MidiSource> source(region_view->midi_region()->midi_source(0));
 
-       if (load_model)
+       if (load_model) {
                source->load_model();
+       }
+
+       _range_dirty = update_data_note_range(
+                       source->model()->lowest_note(),
+                       source->model()->highest_note());
 
-       // Find our note range
-       if (source->model())
-               for (size_t i=0; i < source->model()->n_notes(); ++i)
-                       update_bounds(source->model()->note_at(i)->note());
-       
        // Display region contents
+       region_view->set_height(height);
        region_view->display_model(source->model());
 }
 
@@ -165,72 +201,86 @@ MidiStreamView::display_diskstream (boost::shared_ptr<Diskstream> ds)
        draw_note_lines();
        NoteRangeChanged();
 }
-
-// FIXME: code duplication with AudioStreamView
+                       
 void
-MidiStreamView::redisplay_diskstream ()
+MidiStreamView::update_contents_metrics(boost::shared_ptr<Region> r)
 {
-       list<RegionView *>::iterator i, tmp;
-
-       for (i = region_views.begin(); i != region_views.end(); ++i) {
-               (*i)->enable_display(true); // FIXME: double display, remove
-               (*i)->set_valid (false);
-               
-               /* FIXME: slow.  MidiRegionView needs a find_note_range method
-                * that finds the range without wasting time drawing the events */
-
-               // Load model if it isn't already, to get note range
-               MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*i);
-               mrv->midi_region()->midi_source(0)->load_model();
+       boost::shared_ptr<MidiRegion> mr = boost::dynamic_pointer_cast<MidiRegion>(r);
+       if (mr) {
+               mr->midi_source(0)->load_model();
+               _range_dirty = update_data_note_range(
+                               mr->model()->lowest_note(),
+                               mr->model()->highest_note());
        }
-       
-       //_lowest_note = 60; // middle C
-       //_highest_note = _lowest_note + 11;
+}
 
-       if (_trackview.is_midi_track()) {
-               _trackview.get_diskstream()->playlist()->foreach_region (static_cast<StreamView*>(this), &StreamView::add_region_view);
+bool
+MidiStreamView::update_data_note_range(uint8_t min, uint8_t max)
+{
+       bool dirty = false;
+       if (min < _data_note_min) {
+               _data_note_min = min;
+               dirty = true;
        }
+       if (max > _data_note_max) {
+               _data_note_max = max;
+               dirty = true;
+       }
+       return dirty;
+}
 
-       /* Always display at least one octave */
-       if (_highest_note == 127) {
-               if (_lowest_note > (127 - 11))
-                       _lowest_note = 127 - 11;
-       } else if (_highest_note < _lowest_note + 11) {
-               _highest_note = _lowest_note + 11;
+void
+MidiStreamView::redisplay_diskstream ()
+{
+       if (!_trackview.is_midi_track()) {
+               return;
        }
-       
-       for (i = region_views.begin(); i != region_views.end(); ) {
-               tmp = i;
-               tmp++;
 
-               if (!(*i)->is_valid()) {
-                       delete *i;
-                       region_views.erase (i);
-               } else {
-                       (*i)->enable_display(true);
-                       (*i)->set_y_position_and_height(0, height); // apply note range
-               }
+       list<RegionView*>::iterator i;
 
-               i = tmp;
-       }
-       
-       /* now fix layering */
+       // Load models if necessary, and find note range of all our contents
+       _range_dirty = false;
+       _data_note_min = 127;
+       _data_note_max = 0;
+       _trackview.get_diskstream()->playlist()->foreach_region(
+                       static_cast<StreamView*>(this),
+                       &StreamView::update_contents_metrics);
 
-       for (RegionViewList::iterator i = region_views.begin(); i != region_views.end(); ++i) {
-               region_layered (*i);
+       // No notes, use default range
+       if (!_range_dirty) {
+               _data_note_min = 60;
+               _data_note_max = 71;
        }
        
-       note_range_adjustment.set_page_size(_highest_note - _lowest_note);
-       note_range_adjustment.set_value(_lowest_note);
-       NoteRangeChanged();
-       draw_note_lines();
+       // Extend visible range to show newly recorded data, if necessary
+       _lowest_note  = std::min(_lowest_note, _data_note_min);
+       _highest_note = std::max(_highest_note, _data_note_max);
+       
+       veto_note_range(_lowest_note, _highest_note);
+       
+       // Flag region views as invalid and disable drawing
+       for (i = region_views.begin(); i != region_views.end(); ++i) {
+               (*i)->set_valid(false);
+               (*i)->enable_display(false);
+       }
+
+       // Add and display region views, and flag them as valid
+       _trackview.get_diskstream()->playlist()->foreach_region(
+                       static_cast<StreamView*>(this),
+                       &StreamView::add_region_view);
+
+       // Stack regions by layer, and remove invalid regions
+       layer_regions();
+
+       // Update note range (not regions which are correct) and draw note lines
+       apply_note_range(_lowest_note, _highest_note, false);
 }
 
 
 void
-MidiStreamView::update_contents_y_position_and_height ()
+MidiStreamView::update_contents_height ()
 {
-       StreamView::update_contents_y_position_and_height();
+       StreamView::update_contents_height();
        _note_lines->property_y2() = height;
        draw_note_lines();
 }
@@ -244,12 +294,12 @@ MidiStreamView::draw_note_lines()
 
        _note_lines->clear();
 
-       for(int i = _lowest_note; i <= _highest_note; ++i) {
+       for (int i = lowest_note(); i <= highest_note(); ++i) {
                y = floor(note_to_y(i));
                
                _note_lines->add_line(prev_y, 1.0, ARDOUR_UI::config()->canvasvar_PianoRollBlackOutline.get());
 
-               switch(i % 12) {
+               switch (i % 12) {
                case 1:
                case 3:
                case 6:
@@ -262,56 +312,56 @@ MidiStreamView::draw_note_lines()
                        break;
                }
 
-               if(i == _highest_note) {
+               if (i == highest_note()) {
                        _note_lines->add_line(y, prev_y - y, color);
-               }
-               else {
+               } else {
                        _note_lines->add_line(y + 1.0, prev_y - y - 1.0, color);
                }
 
                prev_y = y;
        }
 }
-       
 
 void
 MidiStreamView::set_note_range(VisibleNoteRange r)
 {
-       _range = r;
        if (r == FullRange) {
                _lowest_note = 0;
                _highest_note = 127;
        } else {
-               _lowest_note = 60;
-               _highest_note = 60;
+               _lowest_note = _data_note_min;
+               _highest_note = _data_note_max;
        }
-       redisplay_diskstream();
+
+       apply_note_range(_lowest_note, _highest_note, true);
 }
 
 void
-MidiStreamView::set_note_range(uint8_t lowest, uint8_t highest) {
-       if(_range == ContentsRange) {
-               _lowest_note = lowest;
-               _highest_note = highest;
-
-               list<RegionView *>::iterator i;
-               for (i = region_views.begin(); i != region_views.end(); ++i) {
-                       (*i)->set_y_position_and_height(0, height); // apply note range
+MidiStreamView::apply_note_range(uint8_t lowest, uint8_t highest, bool to_region_views)
+{
+       _highest_note = highest;
+       _lowest_note = lowest;
+       note_range_adjustment.set_page_size(_highest_note - _lowest_note);
+       note_range_adjustment.set_value(_lowest_note);
+       draw_note_lines();
+       
+       if (to_region_views) {
+               for (list<RegionView*>::iterator i = region_views.begin(); i != region_views.end(); ++i) {
+                       ((MidiRegionView*)(*i))->apply_note_range(lowest, highest);
                }
        }
 
-       draw_note_lines();
        NoteRangeChanged();
 }
-       
+
 void 
-MidiStreamView::update_bounds(uint8_t note_num)
+MidiStreamView::update_note_range(uint8_t note_num)
 {
-       _lowest_note = min(_lowest_note, note_num);
-       _highest_note = max(_highest_note, note_num);
+       assert(note_num <= 127);
+       _data_note_min = min(_data_note_min, note_num);
+       _data_note_max = max(_data_note_max, note_num);
 }
-
-
+       
 void
 MidiStreamView::setup_rec_box ()
 {
@@ -365,7 +415,7 @@ MidiStreamView::setup_rec_box ()
                        boost::shared_ptr<MidiTrack> mt = _trackview.midi_track(); /* we know what it is already */
                        boost::shared_ptr<MidiDiskstream> ds = mt->midi_diskstream();
                        jack_nframes_t frame_pos = ds->current_capture_start ();
-                       gdouble xstart = _trackview.editor.frame_to_pixel (frame_pos);
+                       gdouble xstart = _trackview.editor().frame_to_pixel (frame_pos);
                        gdouble xend;
                        uint32_t fill_color;
 
@@ -378,7 +428,7 @@ MidiStreamView::setup_rec_box ()
                        rec_rect->property_x1() = xstart;
                        rec_rect->property_y1() = 1.0;
                        rec_rect->property_x2() = xend;
-                       rec_rect->property_y2() = (double) _trackview.height - 1;
+                       rec_rect->property_y2() = (double) _trackview.current_height() - 1;
                        rec_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
                        rec_rect->property_fill_color_rgba() = fill_color;
                        rec_rect->lower_to_bottom();
@@ -467,18 +517,19 @@ MidiStreamView::update_rec_regions (boost::shared_ptr<MidiModel> data, nframes_t
 
                        tmp = iter;
                        ++tmp;
-
-                       if (!canvas_item_visible (rec_rects[n].rectangle)) {
-                               /* rect already hidden, this region is done */
+                       
+                       boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion>(iter->first);
+                       if (!region || !iter->second) {
                                iter = tmp;
                                continue;
                        }
                        
-                       boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion>(iter->first);
-                       if (!region) {
+                       if (!canvas_item_visible (rec_rects[n].rectangle)) {
+                               /* rect already hidden, this region is done */
+                               iter = tmp;
                                continue;
                        }
-
+                       
                        nframes_t origlen = region->length();
                        
                        if (region == rec_regions.back().first && rec_active) {
@@ -502,7 +553,7 @@ MidiStreamView::update_rec_regions (boost::shared_ptr<MidiModel> data, nframes_t
 
                                                /* also update rect */
                                                ArdourCanvas::SimpleRect * rect = rec_rects[n].rectangle;
-                                               gdouble xend = _trackview.editor.frame_to_pixel (region->position() + region->length());
+                                               gdouble xend = _trackview.editor().frame_to_pixel (region->position() + region->length());
                                                rect->property_x2() = xend;
 
                                                /* draw events */
@@ -511,9 +562,9 @@ MidiStreamView::update_rec_regions (boost::shared_ptr<MidiModel> data, nframes_t
 
                                                        // FIXME: slooooooooow!
 
-                                                       const boost::shared_ptr<Note> note = data->note_at(i);
+                                                       const boost::shared_ptr<MidiRegionView::NoteType> note = data->note_at(i);
                                                        
-                                                       if (note->duration() > 0 && note->end_time() + region->position() > start)
+                                                       if (note->length() > 0 && note->end_time() + region->position() > start)
                                                                mrv->resolve_note(note->note(), note->end_time());
 
                                                        if (note->time() + region->position() < start)
@@ -567,7 +618,7 @@ MidiStreamView::update_rec_regions (boost::shared_ptr<MidiModel> data, nframes_t
                }
 
                if (update_range)
-                       update_contents_y_position_and_height();
+                       update_contents_height();
        }
 }
 
@@ -586,7 +637,6 @@ MidiStreamView::rec_data_range_ready (jack_nframes_t start, jack_nframes_t dur,
 void
 MidiStreamView::color_handler ()
 {
-
        //case cMidiTrackBase:
        if (_trackview.is_midi_track()) {
                //canvas_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MidiTrackBase.get();
@@ -599,27 +649,30 @@ MidiStreamView::color_handler ()
 }
 
 void
-MidiStreamView::note_range_adjustment_changed() {
+MidiStreamView::note_range_adjustment_changed()
+{
        double sum = note_range_adjustment.get_value() + note_range_adjustment.get_page_size();
        int lowest = (int) floor(note_range_adjustment.get_value());
        int highest;
 
-       if(sum == _range_sum_cache) {
+       if (sum == _range_sum_cache) {
                //cerr << "cached" << endl;
                highest = (int) floor(sum);
-       }
-       else {
+       } else {
                //cerr << "recalc" << endl;
                highest = lowest + (int) floor(note_range_adjustment.get_page_size());
                _range_sum_cache = sum;
        }
 
-       if(lowest == lowest_note() && highest == highest_note()) {
+       if (lowest == _lowest_note && highest == _highest_note) {
                return;
        }
 
-       //cerr << "note range changed: " << lowest << " " << highest << endl;
+       //cerr << "note range adjustment changed: " << lowest << " " << highest << endl;
        //cerr << "  val=" << v_zoom_adjustment.get_value() << " page=" << v_zoom_adjustment.get_page_size() << " sum=" << v_zoom_adjustment.get_value() + v_zoom_adjustment.get_page_size() << endl;
 
-       set_note_range(lowest, highest);
+       _lowest_note = lowest;
+       _highest_note = highest;
+       apply_note_range(lowest, highest, true);
 }
+