Factor out sequencing related things into an independant new library: "evoral".
[ardour.git] / gtk2_ardour / midi_region_view.h
index 9324838abebfde923d1a4b45bcd4b21f159233b6..1bdccd4986fb20a9ee56b353e58c25d0d006b07a 100644 (file)
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2001-2006 Paul Davis 
+    Copyright (C) 2001-2007 Paul Davis
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
 
 #include <libgnomecanvasmm.h>
 #include <libgnomecanvasmm/polygon.h>
+#include <ardour/midi_track.h>
 #include <ardour/midi_region.h>
 #include <ardour/midi_model.h>
+#include <ardour/diskstream.h>
 #include <ardour/types.h>
 
 #include "region_view.h"
-#include "route_time_axis.h"
+#include "midi_time_axis.h"
 #include "time_axis_view_item.h"
 #include "automation_line.h"
 #include "enums.h"
 #include "canvas.h"
 #include "canvas-note.h"
-#include "canvas-midi-event.h"
+#include "canvas-note-event.h"
+#include "canvas-program-change.h"
 
 namespace ARDOUR {
        class MidiRegion;
@@ -44,110 +47,202 @@ namespace ARDOUR {
 class MidiTimeAxisView;
 class GhostRegion;
 class AutomationTimeAxisView;
+class AutomationRegionView;
 
 class MidiRegionView : public RegionView
 {
   public:
-       MidiRegionView (ArdourCanvas::Group *, 
+       MidiRegionView (ArdourCanvas::Group *,
                        RouteTimeAxisView&,
                        boost::shared_ptr<ARDOUR::MidiRegion>,
                        double initial_samples_per_unit,
                        Gdk::Color& basic_color);
 
        ~MidiRegionView ();
-       
+
        virtual void init (Gdk::Color& basic_color, bool wfd);
-       
-       boost::shared_ptr<ARDOUR::MidiRegion> midi_region() const;
-       
+
+       inline const boost::shared_ptr<ARDOUR::MidiRegion> midi_region() const
+               { return boost::dynamic_pointer_cast<ARDOUR::MidiRegion>(_region); }
+
+       inline MidiTimeAxisView* midi_view() const
+               { return dynamic_cast<MidiTimeAxisView*>(&trackview); }
+
+       inline MidiStreamView* midi_stream_view() const
+               { return midi_view()->midi_view(); }
+
        void set_y_position_and_height (double, double);
-    
-    void show_region_editor ();
 
-    GhostRegion* add_ghost (AutomationTimeAxisView&);
+       void set_frame_color();
+
+       void redisplay_model();
+
+       GhostRegion* add_ghost (TimeAxisView&);
 
-       void add_event(const ARDOUR::MidiEvent& ev);
-       void add_note(const ARDOUR::MidiModel::Note& note);
+       void add_note(const boost::shared_ptr<Evoral::Note> note);
+       void resolve_note(uint8_t note_num, double end_time);
+       
+       void add_pgm_change(boost::shared_ptr<Evoral::Event> event);
 
        void begin_write();
        void end_write();
        void extend_active_notes();
 
-       void create_note_at(double x, double y);
+       void create_note_at(double x, double y, double duration);
 
        void display_model(boost::shared_ptr<ARDOUR::MidiModel> model);
 
-       inline void start_remove_command() {
-               _command_mode = Remove;
-               if (!_delta_command)
-                       _delta_command = _model->new_delta_command();
-       }
-
-       void command_remove_note(ArdourCanvas::CanvasMidiEvent* ev) {
-               if (_delta_command && ev->note()) {
-                       _delta_command->remove(*ev->note());
-                       ev->selected(true);
-               }
-       }
-
-       void note_entered(ArdourCanvas::CanvasMidiEvent* ev) {
-               if (_command_mode == Remove && _delta_command && ev->note())
-                       _delta_command->remove(*ev->note());
-       }
-
-       //ARDOUR::MidiModel::DeltaCommand* delta_command() { return _delta_command; }
-
-       void abort_command() {
-               delete _delta_command;
-               _delta_command = NULL;
-               _command_mode = None;
-       }
-
-       void apply_command() {
-               if (_delta_command) {
-                       _model->apply_command(_delta_command);
-                       _delta_command = NULL;
-               }
-               _command_mode = None;
-       }
-
+       void start_delta_command(string name = "midi edit");
+       void command_add_note(const boost::shared_ptr<Evoral::Note> note, bool selected);
+       void command_remove_note(ArdourCanvas::CanvasNoteEvent* ev);
+
+       void apply_command();
+       void abort_command();
+
+       void   note_entered(ArdourCanvas::CanvasNoteEvent* ev);
+       void   unique_select(ArdourCanvas::CanvasNoteEvent* ev);
+       void   note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add);
+       void   note_deselected(ArdourCanvas::CanvasNoteEvent* ev, bool add);
+       void   delete_selection();
+       size_t selection_size() { return _selection.size(); }
+
+       void move_selection(double dx, double dy);
+       void note_dropped(ArdourCanvas::CanvasNoteEvent* ev, double dt, uint8_t dnote);
+
+       /**
+        * This function is needed to subtract the region start in pixels
+        * from world coordinates submitted by the mouse
+        */
+       double get_position_pixels(void);
+
+       /**
+        * This function is called by CanvasMidiNote when resizing starts,
+        * i.e. when the user presses mouse-2 on the note
+        * @param note_end which end of the note, NOTE_ON or NOTE_OFF
+        */
+       void  begin_resizing(ArdourCanvas::CanvasNote::NoteEnd note_end);
+
+       /**
+        * This function is called while the user moves the mouse when resizing notes
+        * @param note_end which end of the note, NOTE_ON or NOTE_OFF
+        * @param x the difference in mouse motion, ie the motion difference if relative=true
+        *           or the absolute mouse position (track-relative) if relative is false
+        * @param relative true if relative resizing is taking place, false if absolute resizing
+        */
+       void update_resizing(ArdourCanvas::CanvasNote::NoteEnd note_end, double x, bool relative);
+
+       /**
+        * This function is called while the user releases the mouse button when resizing notes
+        * @param note_end which end of the note, NOTE_ON or NOTE_OFF
+        * @param event_x the absolute mouse position (track-relative)
+        * @param relative true if relative resizing is taking place, false if absolute resizing
+        */
+       void commit_resizing(ArdourCanvas::CanvasNote::NoteEnd note_end, double event_x, bool relative);
+
+       /**
+        * This function is called while the user adjusts the velocity on a selection of notes
+        * @param velocity the relative or absolute velocity, depending on the value of relative
+        * @param relative true if the given velocity represents a delta to be applied to all notes, false
+        *        if the absolute value of the note shoud be set
+        */
+       void change_velocity(uint8_t velocity, bool relative=false);
+       
+       /**
+        * This function is called when the user adjusts the midi channel of a selection of notes
+        * @param channel - the channel number of the new channel, zero-based
+        */
+       void change_channel(uint8_t channel);
+
+       enum MouseState { None, Pressed, SelectTouchDragging, SelectRectDragging, AddDragging, EraseTouchDragging };
+       MouseState mouse_state() const { return _mouse_state; }
+
+       struct NoteResizeData {
+               ArdourCanvas::CanvasNote  *canvas_note;
+               ArdourCanvas::SimpleRect  *resize_rect;
+               double                     current_x;
+       };
+       
+       /**
+        * This function provides the snap function for region position relative coordinates
+        * for pixel units (double) instead of nframes64_t
+        * @param x a pixel coordinate relative to region start
+        * @return the snapped pixel coordinate relative to region start
+        */
+       double snap_to_pixel(double x);
+
+       /**
+        * This function provides the snap function for region position relative coordinates
+        * for pixel units (double) instead of nframes64_t
+        * @param x a pixel coordinate relative to region start
+        * @return the snapped nframes64_t coordinate relative to region start
+        */
+       nframes64_t snap_to_frame(double x);
+
+       /**
+        * This function provides the snap function for region position relative coordinates
+        * @param x a pixel coordinate relative to region start
+        * @return the snapped nframes64_t coordinate relative to region start
+        */
+       nframes64_t snap_to_frame(nframes64_t x);
+       
   protected:
 
-    /* this constructor allows derived types
-       to specify their visibility requirements
-       to the TimeAxisViewItem parent class
+    /**
+     * this constructor allows derived types
+     * to specify their visibility requirements
+     * to the TimeAxisViewItem parent class
     */
-    
-    MidiRegionView (ArdourCanvas::Group *, 
+    MidiRegionView (ArdourCanvas::Group *,
                        RouteTimeAxisView&,
                        boost::shared_ptr<ARDOUR::MidiRegion>,
                        double samples_per_unit,
                        Gdk::Color& basic_color,
                        TimeAxisViewItem::Visibility);
-    
+
     void region_resized (ARDOUR::Change);
 
     void set_flags (XMLNode *);
     void store_flags ();
-    
+
        void reset_width_dependent_items (double pixel_width);
 
   private:
 
-       void redisplay_model();
        void clear_events();
+       void switch_source(boost::shared_ptr<ARDOUR::Source> src);
 
        bool canvas_event(GdkEvent* ev);
        bool note_canvas_event(GdkEvent* ev);
-
-       boost::shared_ptr<ARDOUR::MidiModel> _model;
-       std::vector<ArdourCanvas::Item*>     _events;
-       ArdourCanvas::CanvasNote**           _active_notes;
-       ARDOUR::MidiModel::DeltaCommand*     _delta_command;
        
-       enum CommandMode { None, Remove };
-       CommandMode _command_mode;
+       void midi_channel_mode_changed(ARDOUR::ChannelMode mode, uint16_t mask);
+
+       void clear_selection_except(ArdourCanvas::CanvasNoteEvent* ev);
+       void clear_selection() { clear_selection_except(NULL); }
+       void update_drag_selection(double last_x, double x, double last_y, double y);
+
+       int8_t   _force_channel;
+       uint16_t _last_channel_selection;
+       double   _default_note_length;
+
+       boost::shared_ptr<ARDOUR::MidiModel>        _model;
+       std::vector<ArdourCanvas::CanvasNoteEvent*> _events;
+       std::vector< boost::shared_ptr<ArdourCanvas::CanvasProgramChange> > _pgm_changes;
+       ArdourCanvas::CanvasNote**                  _active_notes;
+       ArdourCanvas::Group*                        _note_group;
+       ARDOUR::MidiModel::DeltaCommand*            _delta_command;
+
+       MouseState _mouse_state;
+       int _pressed_button;
+
+       typedef std::set<ArdourCanvas::CanvasNoteEvent*> Selection;
+       /// Currently selected CanvasNoteEvents
+       Selection _selection;
+
+       /** New notes (created in the current command) which should be selected
+        * when they appear after the command is applied. */
+       std::set< boost::shared_ptr<Evoral::Note> > _marked_for_selection;
 
+       std::vector<NoteResizeData *> _resize_data;
 };
 
 #endif /* __gtk_ardour_midi_region_view_h__ */