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livetrax/gtk2_ardour/midi_region_view.h
Paul Davis b116282bbb make shift-click for extend-selection sort-of work for MIDI 
git-svn-id: svn://localhost/ardour2/branches/3.0@5541 d708f5d6-7413-0410-9779-e7cbd77b26cf
2009-08-18 02:37:57 +00:00

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/*
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
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __gtk_ardour_midi_region_view_h__
#define __gtk_ardour_midi_region_view_h__
#include <string>
#include <vector>
#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 "editing.h"
#include "region_view.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-note-event.h"
#include "canvas-program-change.h"
#include "canvas-sysex.h"
namespace ARDOUR {
class MidiRegion;
class MidiModel;
};
namespace MIDI {
namespace Name {
struct PatchPrimaryKey;
};
};
class MidiTimeAxisView;
class GhostRegion;
class AutomationTimeAxisView;
class AutomationRegionView;
class MidiCutBuffer;
class MidiRegionView : public RegionView
{
public:
typedef Evoral::Note<ARDOUR::MidiModel::TimeType> NoteType;
MidiRegionView (ArdourCanvas::Group *,
RouteTimeAxisView&,
boost::shared_ptr<ARDOUR::MidiRegion>,
double initial_samples_per_unit,
Gdk::Color const & basic_color);
MidiRegionView (const MidiRegionView& other);
MidiRegionView (const MidiRegionView& other, boost::shared_ptr<ARDOUR::MidiRegion>);
~MidiRegionView ();
virtual void init (Gdk::Color const & basic_color, bool wfd);
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_height (double);
void apply_note_range(uint8_t lowest, uint8_t highest, bool force=false);
inline ARDOUR::ColorMode color_mode() const { return midi_view()->color_mode(); }
void set_frame_color();
void redisplay_model();
GhostRegion* add_ghost (TimeAxisView&);
void add_note(const boost::shared_ptr<NoteType> note);
void resolve_note(uint8_t note_num, double end_time);
void cut_copy_clear (Editing::CutCopyOp);
void paste (nframes64_t pos, float times, const MidiCutBuffer&);
struct PCEvent {
PCEvent(double a_time, uint8_t a_value, uint8_t a_channel)
: time(a_time), value(a_value), channel(a_channel) {}
double time;
uint8_t value;
uint8_t channel;
};
/** Add a new program change flag to the canvas.
* @param program the MidiRegionView::PCEvent to add
* @param the text to display in the flag
*/
void add_pgm_change(PCEvent& program, const std::string& displaytext);
/** Look up the given time and channel in the 'automation' and set keys accordingly.
* @param time the time of the program change event
* @param channel the MIDI channel of the event
* @key a reference to an instance of MIDI::Name::PatchPrimaryKey whose fields will
* will be set according to the result of the lookup
*/
void get_patch_key_at(double time, uint8_t channel, MIDI::Name::PatchPrimaryKey& key);
/** Change the 'automation' data of old_program to new values which correspond to new_patch.
* @param old_program the program change event which is to be altered
* @param new_patch the new lsb, msb and program number which are to be set
*/
void alter_program_change(PCEvent& old_program, const MIDI::Name::PatchPrimaryKey& new_patch);
/** Alter a given program to the new given one.
* (Called on context menu select on CanvasProgramChange)
*/
void program_selected(
ArdourCanvas::CanvasProgramChange& program,
const MIDI::Name::PatchPrimaryKey& new_patch);
/** Alter a given program to be its predecessor in the MIDNAM file.
*/
void previous_program(ArdourCanvas::CanvasProgramChange& program);
/** Alters a given program to be its successor in the MIDNAM file.
*/
void next_program(ArdourCanvas::CanvasProgramChange& program);
/** Displays all program change events in the region as flags on the canvas.
*/
void display_program_changes();
/** Displays all system exclusive events in the region as flags on the canvas.
*/
void display_sysexes();
void begin_write();
void end_write();
void extend_active_notes();
void create_note_at(double x, double y, double length);
void display_model(boost::shared_ptr<ARDOUR::MidiModel> model);
void start_delta_command(std::string name = "midi edit");
void command_add_note(const boost::shared_ptr<NoteType> note, bool selected, bool show_velocity=false);
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, bool extend=false);
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 d_pixels, uint8_t d_note);
/** Return true iff the note is within the currently visible range */
bool note_in_visible_range(const boost::shared_ptr<NoteType> note) const;
/** Get the region position in pixels relative to session. */
double get_position_pixels();
/** Begin resizing of some notes.
* Called by CanvasMidiNote when resizing starts.
* @param note_end which end of the note, NOTE_ON or NOTE_OFF
*/
void begin_resizing(ArdourCanvas::CanvasNote::NoteEnd note_end);
/** Update resizing notes while user drags.
* @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);
/** Finish resizing notes when the user releases the mouse button.
* @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);
/** Adjust the velocity on a note, and the selection if applicable.
* @param velocity the relative or absolute velocity
* @param relative whether velocity is relative or absolute
*/
void change_velocity(ArdourCanvas::CanvasNoteEvent* ev, int8_t velocity, bool relative=false);
/** Change the channel of the selection.
* @param channel - the channel number of the new channel, zero-based
*/
void change_channel(uint8_t channel);
enum MouseState {
None,
Pressed,
SelectTouchDragging,
SelectRectDragging,
AddDragging
};
MouseState mouse_state() const { return _mouse_state; }
struct NoteResizeData {
ArdourCanvas::CanvasNote *canvas_note;
ArdourCanvas::SimpleRect *resize_rect;
double current_x;
};
/** Snap a region relative pixel coordinate to pixel units.
* @param x a pixel coordinate relative to region start
* @return the snapped pixel coordinate relative to region start
*/
double snap_to_pixel(double x);
/** Snap a region relative pixel coordinate to frame units.
* @param x a pixel coordinate relative to region start
* @return the snapped nframes64_t coordinate relative to region start
*/
nframes64_t snap_pixel_to_frame(double x);
/** Snap a region relative frame coordinate to frame units.
* @param x a pixel coordinate relative to region start
* @return the snapped nframes64_t coordinate relative to region start
*/
nframes64_t snap_frame_to_frame(nframes64_t x);
/** Convert a timestamp in beats to frames (both relative to region start) */
nframes64_t beats_to_frames(double beats) const;
/** Convert a timestamp in frames to beats (both relative to region start) */
double frames_to_beats(nframes64_t beats) const;
/** Return the current selection as a MidiModel or null if there is no selection */
ARDOUR::MidiModel* selection_as_model () const;
void goto_previous_note ();
void goto_next_note ();
void change_velocities (int8_t velocity, bool relative);
void transpose (bool up, bool fine);
void nudge_notes (bool forward);
protected:
/** Allows derived types to specify their visibility requirements
* to the TimeAxisViewItem parent class.
*/
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:
/** Play the NoteOn event of the given note immediately
* and schedule the playback of the corresponding NoteOff event.
*/
void play_midi_note(boost::shared_ptr<NoteType> note);
/** Play the NoteOff-Event of the given note immediately
* (scheduled by @ref play_midi_note()).
*/
bool play_midi_note_off(boost::shared_ptr<NoteType> note);
void clear_events();
void switch_source(boost::shared_ptr<ARDOUR::Source> src);
bool canvas_event(GdkEvent* ev);
bool note_canvas_event(GdkEvent* ev);
void midi_channel_mode_changed(ARDOUR::ChannelMode mode, uint16_t mask);
void midi_patch_settings_changed(std::string model, std::string custom_device_mode);
void change_note_velocity(ArdourCanvas::CanvasNoteEvent* ev, int8_t vel, bool relative=false);
void change_note_note(ArdourCanvas::CanvasNoteEvent* ev, int8_t note, bool relative=false);
void change_note_time(ArdourCanvas::CanvasNoteEvent* ev, ARDOUR::MidiModel::TimeType, bool relative=false);
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);
void add_to_selection (ArdourCanvas::CanvasNoteEvent*);
void remove_from_selection (ArdourCanvas::CanvasNoteEvent*);
int8_t _force_channel;
uint16_t _last_channel_selection;
double _default_note_length;
uint8_t _current_range_min;
uint8_t _current_range_max;
/// MIDNAM information of the current track: Model name of MIDNAM file
std::string _model_name;
/// MIDNAM information of the current track: CustomDeviceMode
std::string _custom_device_mode;
typedef std::vector<ArdourCanvas::CanvasNoteEvent*> Events;
typedef std::vector< boost::shared_ptr<ArdourCanvas::CanvasProgramChange> > PgmChanges;
typedef std::vector< boost::shared_ptr<ArdourCanvas::CanvasSysEx> > SysExes;
boost::shared_ptr<ARDOUR::MidiModel> _model;
Events _events;
PgmChanges _pgm_changes;
SysExes _sys_exes;
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;
MidiCutBuffer* selection_as_cut_buffer () const;
/** New notes (created in the current command) which should be selected
* when they appear after the command is applied. */
std::set< boost::shared_ptr<NoteType> > _marked_for_selection;
/** New notes (created in the current command) which should have visible velocity
* when they appear after the command is applied. */
std::set< boost::shared_ptr<NoteType> > _marked_for_velocity;
std::vector<NoteResizeData *> _resize_data;
/* connection used to connect to model's ContentChanged signal */
sigc::connection content_connection;
};
#endif /* __gtk_ardour_midi_region_view_h__ */
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