2 Copyright (C) 2009 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef __gtk2_ardour_editor_drag_h_
21 #define __gtk2_ardour_editor_drag_h_
28 #include "ardour/types.h"
31 #include "editor_items.h"
38 class StatefulDiffCommand;
43 class CanvasNoteEvent;
44 class CanvasPatchChange;
51 class MidiTimeAxisView;
54 /** Class to manage current drags */
59 DragManager (Editor* e);
62 bool motion_handler (GdkEvent *, bool);
66 void set (Drag *, GdkEvent *, Gdk::Cursor* c = 0);
67 void start_grab (GdkEvent *, Gdk::Cursor* c = 0);
68 bool end_grab (GdkEvent *);
69 bool have_item (ArdourCanvas::Item *) const;
71 /** @return true if an end drag or abort is in progress */
72 bool ending () const {
76 bool active () const {
77 return !_drags.empty ();
80 /** @return current pointer x position in trackview coordinates */
81 double current_pointer_x () const {
82 return _current_pointer_x;
85 /** @return current pointer y position in trackview coordinates */
86 double current_pointer_y () const {
87 return _current_pointer_y;
90 /** @return current pointer frame */
91 ARDOUR::framepos_t current_pointer_frame () const {
92 return _current_pointer_frame;
97 std::list<Drag*> _drags;
98 bool _ending; ///< true if end_grab or abort is in progress, otherwise false
99 double _current_pointer_x; ///< trackview x of the current pointer
100 double _current_pointer_y; ///< trackview y of the current pointer
101 ARDOUR::framepos_t _current_pointer_frame; ///< frame that the pointer is now at
102 bool _old_follow_playhead; ///< state of Editor::follow_playhead() before the drags started
105 /** Abstract base class for dragging of things within the editor */
109 Drag (Editor *, ArdourCanvas::Item *);
112 void set_manager (DragManager* m) {
116 /** @return the canvas item being dragged */
117 ArdourCanvas::Item* item () const {
121 void swap_grab (ArdourCanvas::Item *, Gdk::Cursor *, uint32_t);
122 bool motion_handler (GdkEvent*, bool);
125 ARDOUR::framepos_t adjusted_frame (ARDOUR::framepos_t, GdkEvent const *, bool snap = true) const;
126 ARDOUR::framepos_t adjusted_current_frame (GdkEvent const *, bool snap = true) const;
128 /** Called to start a grab of an item.
129 * @param e Event that caused the grab to start.
130 * @param c Cursor to use, or 0.
132 virtual void start_grab (GdkEvent* e, Gdk::Cursor* c = 0);
134 virtual bool end_grab (GdkEvent *);
136 /** Called when a drag motion has occurred.
137 * @param e Event describing the motion.
138 * @param f true if this is the first movement, otherwise false.
140 virtual void motion (GdkEvent* e, bool f) = 0;
142 /** Called when a drag has finished.
143 * @param e Event describing the finish.
144 * @param m true if some movement occurred, otherwise false.
146 virtual void finished (GdkEvent* e, bool m) = 0;
148 /** Called to abort a drag and return things to how
149 * they were before it started.
150 * @param m true if some movement occurred, otherwise false.
152 virtual void aborted (bool m) = 0;
154 /** @param m Mouse mode.
155 * @return true if this drag should happen in this mouse mode.
157 virtual bool active (Editing::MouseMode m) {
158 return (m != Editing::MouseGain);
161 /** @return minimum number of frames (in x) and pixels (in y) that should be considered a movement */
162 virtual std::pair<ARDOUR::framecnt_t, int> move_threshold () const {
163 return std::make_pair (1, 1);
166 virtual bool allow_vertical_autoscroll () const {
170 /** @return true if x movement matters to this drag */
171 virtual bool x_movement_matters () const {
175 /** @return true if y movement matters to this drag */
176 virtual bool y_movement_matters () const {
180 /** Set up the _pointer_frame_offset */
181 virtual void setup_pointer_frame_offset () {
182 _pointer_frame_offset = 0;
187 double grab_x () const {
191 double grab_y () const {
195 ARDOUR::framepos_t raw_grab_frame () const {
196 return _raw_grab_frame;
199 ARDOUR::framepos_t grab_frame () const {
203 double last_pointer_x () const {
204 return _last_pointer_x;
207 double last_pointer_y () const {
208 return _last_pointer_y;
211 double last_pointer_frame () const {
212 return _last_pointer_frame;
215 boost::shared_ptr<ARDOUR::Region> add_midi_region (MidiTimeAxisView*);
217 void show_verbose_cursor_time (framepos_t);
218 void show_verbose_cursor_duration (framepos_t, framepos_t, double xoffset = 0);
219 void show_verbose_cursor_text (std::string const &);
221 Editor* _editor; ///< our editor
223 ArdourCanvas::Item* _item; ///< our item
224 /** Offset from the mouse's position for the drag to the start of the thing that is being dragged */
225 ARDOUR::framecnt_t _pointer_frame_offset;
226 bool _x_constrained; ///< true if x motion is constrained, otherwise false
227 bool _y_constrained; ///< true if y motion is constrained, otherwise false
228 bool _was_rolling; ///< true if the session was rolling before the drag started, otherwise false
232 bool _move_threshold_passed; ///< true if the move threshold has been passed, otherwise false
233 double _grab_x; ///< trackview x of the grab start position
234 double _grab_y; ///< trackview y of the grab start position
235 double _last_pointer_x; ///< trackview x of the pointer last time a motion occurred
236 double _last_pointer_y; ///< trackview y of the pointer last time a motion occurred
237 ARDOUR::framepos_t _raw_grab_frame; ///< unsnapped frame that the mouse was at when start_grab was called, or 0
238 ARDOUR::framepos_t _grab_frame; ///< adjusted_frame that the mouse was at when start_grab was called, or 0
239 ARDOUR::framepos_t _last_pointer_frame; ///< adjusted_frame the last time a motion occurred
244 /** Container for details about a region being dragged */
247 DraggingView (RegionView *, RegionDrag *);
249 RegionView* view; ///< the view
250 /** index into RegionDrag::_time_axis_views of the view that this region is currently being displayed on,
251 * or -1 if it is not visible.
254 /** layer that this region is currently being displayed on. This is a double
255 rather than a layer_t as we use fractional layers during drags to allow the user
256 to indicate a new layer to put a region on.
259 double initial_y; ///< the initial y position of the view before any reparenting
260 framepos_t initial_position; ///< initial position of the region
261 framepos_t initial_end; ///< initial end position of the region
262 boost::shared_ptr<ARDOUR::Playlist> initial_playlist;
265 /** Abstract base class for drags that involve region(s) */
266 class RegionDrag : public Drag, public sigc::trackable
269 RegionDrag (Editor *, ArdourCanvas::Item *, RegionView *, std::list<RegionView*> const &);
270 virtual ~RegionDrag () {}
274 RegionView* _primary; ///< the view that was clicked on (or whatever) to start the drag
275 std::list<DraggingView> _views; ///< information about all views that are being dragged
277 /** a list of the non-hidden TimeAxisViews sorted by editor order key */
278 std::vector<TimeAxisView*> _time_axis_views;
279 int find_time_axis_view (TimeAxisView *) const;
284 friend class DraggingView;
288 void region_going_away (RegionView *);
289 PBD::ScopedConnection death_connection;
293 /** Drags involving region motion from somewhere */
294 class RegionMotionDrag : public RegionDrag
298 RegionMotionDrag (Editor *, ArdourCanvas::Item *, RegionView *, std::list<RegionView*> const &, bool);
299 virtual ~RegionMotionDrag () {}
301 virtual void start_grab (GdkEvent *, Gdk::Cursor *);
302 virtual void motion (GdkEvent *, bool);
303 virtual void finished (GdkEvent *, bool);
304 virtual void aborted (bool);
306 /** @return true if the regions being `moved' came from somewhere on the canvas;
307 * false if they came from outside (e.g. from the region list).
309 virtual bool regions_came_from_canvas () const = 0;
313 double compute_x_delta (GdkEvent const *, ARDOUR::framecnt_t *);
314 bool y_movement_allowed (int, double) const;
317 ARDOUR::framepos_t _last_frame_position; ///< last position of the thing being dragged
318 double _total_x_delta;
319 int _last_pointer_time_axis_view;
320 double _last_pointer_layer;
324 /** Drags to move (or copy) regions that are already shown in the GUI to
325 * somewhere different.
327 class RegionMoveDrag : public RegionMotionDrag
330 RegionMoveDrag (Editor *, ArdourCanvas::Item *, RegionView *, std::list<RegionView*> const &, bool, bool);
331 virtual ~RegionMoveDrag () {}
333 void motion (GdkEvent *, bool);
334 void finished (GdkEvent *, bool);
337 bool regions_came_from_canvas () const {
341 std::pair<ARDOUR::framecnt_t, int> move_threshold () const {
342 return std::make_pair (4, 4);
345 void setup_pointer_frame_offset ();
348 typedef std::set<boost::shared_ptr<ARDOUR::Playlist> > PlaylistSet;
350 void finished_no_copy (
353 ARDOUR::framecnt_t const
359 ARDOUR::framecnt_t const
362 RegionView* insert_region_into_playlist (
363 boost::shared_ptr<ARDOUR::Region>,
370 void remove_region_from_playlist (
371 boost::shared_ptr<ARDOUR::Region>,
372 boost::shared_ptr<ARDOUR::Playlist>,
373 PlaylistSet& modified_playlists
376 void add_stateful_diff_commands_for_playlists (PlaylistSet const &);
378 void collect_new_region_view (RegionView *);
381 RegionView* _new_region_view;
384 /** Drag to insert a region from somewhere */
385 class RegionInsertDrag : public RegionMotionDrag
388 RegionInsertDrag (Editor *, boost::shared_ptr<ARDOUR::Region>, RouteTimeAxisView*, ARDOUR::framepos_t);
390 void finished (GdkEvent *, bool);
393 bool regions_came_from_canvas () const {
398 /** Region drag in splice mode */
399 class RegionSpliceDrag : public RegionMoveDrag
402 RegionSpliceDrag (Editor *, ArdourCanvas::Item *, RegionView *, std::list<RegionView*> const &);
404 void motion (GdkEvent *, bool);
405 void finished (GdkEvent *, bool);
409 /** Drags to create regions */
410 class RegionCreateDrag : public Drag
413 RegionCreateDrag (Editor *, ArdourCanvas::Item *, TimeAxisView *);
415 void motion (GdkEvent *, bool);
416 void finished (GdkEvent *, bool);
420 MidiTimeAxisView* _view;
421 boost::shared_ptr<ARDOUR::Region> _region;
424 /** Drags to resize MIDI notes */
425 class NoteResizeDrag : public Drag
428 NoteResizeDrag (Editor *, ArdourCanvas::Item *);
430 void start_grab (GdkEvent *, Gdk::Cursor* c = 0);
431 void motion (GdkEvent *, bool);
432 void finished (GdkEvent *, bool);
436 MidiRegionView* region;
441 /** Drags to move MIDI notes */
442 class NoteDrag : public Drag
445 NoteDrag (Editor*, ArdourCanvas::Item*);
447 void start_grab (GdkEvent *, Gdk::Cursor* c = 0);
448 void motion (GdkEvent *, bool);
449 void finished (GdkEvent *, bool);
454 ARDOUR::frameoffset_t total_dx () const;
455 int8_t total_dy () const;
457 MidiRegionView* _region;
458 Gnome::Canvas::CanvasNoteEvent* _primary;
459 double _cumulative_dx;
460 double _cumulative_dy;
465 class NoteCreateDrag : public Drag
468 NoteCreateDrag (Editor *, ArdourCanvas::Item *, MidiRegionView *);
471 void start_grab (GdkEvent *, Gdk::Cursor* c = 0);
472 void motion (GdkEvent *, bool);
473 void finished (GdkEvent *, bool);
477 double y_to_region (double) const;
478 framecnt_t grid_frames (framepos_t) const;
480 MidiRegionView* _region_view;
481 ArdourCanvas::SimpleRect* _drag_rect;
485 /** Drag to move MIDI patch changes */
486 class PatchChangeDrag : public Drag
489 PatchChangeDrag (Editor *, ArdourCanvas::CanvasPatchChange *, MidiRegionView *);
491 void motion (GdkEvent *, bool);
492 void finished (GdkEvent *, bool);
495 bool y_movement_matters () const {
499 void setup_pointer_frame_offset ();
502 MidiRegionView* _region_view;
503 ArdourCanvas::CanvasPatchChange* _patch_change;
504 double _cumulative_dx;
507 /** Drag to trim region(s) */
508 class TrimDrag : public RegionDrag
517 TrimDrag (Editor *, ArdourCanvas::Item *, RegionView*, std::list<RegionView*> const &);
519 void start_grab (GdkEvent *, Gdk::Cursor* c = 0);
520 void motion (GdkEvent *, bool);
521 void finished (GdkEvent *, bool);
524 bool y_movement_matters () const {
528 void setup_pointer_frame_offset ();
532 Operation _operation;
535 /** Meter marker drag */
536 class MeterMarkerDrag : public Drag
539 MeterMarkerDrag (Editor *, ArdourCanvas::Item *, bool);
541 void start_grab (GdkEvent *, Gdk::Cursor* c = 0);
542 void motion (GdkEvent *, bool);
543 void finished (GdkEvent *, bool);
546 bool allow_vertical_autoscroll () const {
550 bool y_movement_matters () const {
554 void setup_pointer_frame_offset ();
557 MeterMarker* _marker;
559 XMLNode* before_state;
562 /** Tempo marker drag */
563 class TempoMarkerDrag : public Drag
566 TempoMarkerDrag (Editor *, ArdourCanvas::Item *, bool);
568 void start_grab (GdkEvent *, Gdk::Cursor* c = 0);
569 void motion (GdkEvent *, bool);
570 void finished (GdkEvent *, bool);
573 bool allow_vertical_autoscroll () const {
577 bool y_movement_matters () const {
581 void setup_pointer_frame_offset ();
584 TempoMarker* _marker;
586 XMLNode* before_state;
590 /** Drag of the playhead cursor */
591 class CursorDrag : public Drag
594 CursorDrag (Editor *, ArdourCanvas::Item *, bool);
596 void start_grab (GdkEvent *, Gdk::Cursor* c = 0);
597 void motion (GdkEvent *, bool);
598 void finished (GdkEvent *, bool);
601 bool active (Editing::MouseMode) {
605 bool allow_vertical_autoscroll () const {
609 bool y_movement_matters () const {
614 void fake_locate (framepos_t);
616 bool _stop; ///< true to stop the transport on starting the drag, otherwise false
617 double _grab_zoom; ///< editor frames per unit when our grab started
620 /** Region fade-in drag */
621 class FadeInDrag : public RegionDrag
624 FadeInDrag (Editor *, ArdourCanvas::Item *, RegionView *, std::list<RegionView*> const &);
626 void start_grab (GdkEvent *, Gdk::Cursor* c = 0);
627 void motion (GdkEvent *, bool);
628 void finished (GdkEvent *, bool);
631 bool y_movement_matters () const {
635 void setup_pointer_frame_offset ();
638 /** Region fade-out drag */
639 class FadeOutDrag : public RegionDrag
642 FadeOutDrag (Editor *, ArdourCanvas::Item *, RegionView *, std::list<RegionView*> const &);
644 void start_grab (GdkEvent *, Gdk::Cursor* c = 0);
645 void motion (GdkEvent *, bool);
646 void finished (GdkEvent *, bool);
649 bool y_movement_matters () const {
653 void setup_pointer_frame_offset ();
657 class MarkerDrag : public Drag
660 MarkerDrag (Editor *, ArdourCanvas::Item *);
663 void start_grab (GdkEvent *, Gdk::Cursor* c = 0);
664 void motion (GdkEvent *, bool);
665 void finished (GdkEvent *, bool);
668 bool allow_vertical_autoscroll () const {
672 bool y_movement_matters () const {
676 void setup_pointer_frame_offset ();
679 void update_item (ARDOUR::Location *);
681 Marker* _marker; ///< marker being dragged
682 std::list<ARDOUR::Location*> _copied_locations;
683 ArdourCanvas::Points _points;
686 /** Control point drag */
687 class ControlPointDrag : public Drag
690 ControlPointDrag (Editor *, ArdourCanvas::Item *);
692 void start_grab (GdkEvent *, Gdk::Cursor* c = 0);
693 void motion (GdkEvent *, bool);
694 void finished (GdkEvent *, bool);
697 bool active (Editing::MouseMode m);
701 ControlPoint* _point;
702 double _fixed_grab_x;
703 double _fixed_grab_y;
704 double _cumulative_x_drag;
705 double _cumulative_y_drag;
706 static double _zero_gain_fraction;
709 /** Gain or automation line drag */
710 class LineDrag : public Drag
713 LineDrag (Editor *e, ArdourCanvas::Item *i);
715 void start_grab (GdkEvent *, Gdk::Cursor* c = 0);
716 void motion (GdkEvent *, bool);
717 void finished (GdkEvent *, bool);
720 bool active (Editing::MouseMode) {
726 AutomationLine* _line;
727 double _fixed_grab_x;
728 double _fixed_grab_y;
731 double _cumulative_y_drag;
734 /** Transient feature line drags*/
735 class FeatureLineDrag : public Drag
738 FeatureLineDrag (Editor *e, ArdourCanvas::Item *i);
740 void start_grab (GdkEvent *, Gdk::Cursor* c = 0);
741 void motion (GdkEvent *, bool);
742 void finished (GdkEvent *, bool);
745 bool active (Editing::MouseMode) {
751 ArdourCanvas::Line* _line;
752 AudioRegionView* _arv;
754 double _region_view_grab_x;
755 double _cumulative_x_drag;
761 /** Dragging of a rubberband rectangle for selecting things */
762 class RubberbandSelectDrag : public Drag
765 RubberbandSelectDrag (Editor *, ArdourCanvas::Item *);
767 void start_grab (GdkEvent *, Gdk::Cursor* c = 0);
768 void motion (GdkEvent *, bool);
769 void finished (GdkEvent *, bool);
772 std::pair<ARDOUR::framecnt_t, int> move_threshold () const {
773 return std::make_pair (8, 1);
776 void do_select_things (GdkEvent *, bool);
778 /** Select some things within a rectangle.
779 * @param button_state The button state from the GdkEvent.
780 * @param x1 The left-hand side of the rectangle in session frames.
781 * @param x2 The right-hand side of the rectangle in session frames.
782 * @param y1 The top of the rectangle in trackview coordinates.
783 * @param y2 The bottom of the rectangle in trackview coordinates.
784 * @param drag_in_progress true if the drag is currently happening.
786 virtual void select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool drag_in_progress) = 0;
788 virtual void deselect_things () = 0;
794 /** A general editor RubberbandSelectDrag (for regions, automation points etc.) */
795 class EditorRubberbandSelectDrag : public RubberbandSelectDrag
798 EditorRubberbandSelectDrag (Editor *, ArdourCanvas::Item *);
800 void select_things (int, framepos_t, framepos_t, double, double, bool);
801 void deselect_things ();
804 /** A RubberbandSelectDrag for selecting MIDI notes */
805 class MidiRubberbandSelectDrag : public RubberbandSelectDrag
808 MidiRubberbandSelectDrag (Editor *, MidiRegionView *);
810 void select_things (int, framepos_t, framepos_t, double, double, bool);
811 void deselect_things ();
814 MidiRegionView* _region_view;
817 /** A RubberbandSelectDrag for selecting MIDI notes but with no horizonal component */
818 class MidiVerticalSelectDrag : public RubberbandSelectDrag
821 MidiVerticalSelectDrag (Editor *, MidiRegionView *);
823 void select_things (int, framepos_t, framepos_t, double, double, bool);
824 void deselect_things ();
827 MidiRegionView* _region_view;
830 /** Region drag in time-FX mode */
831 class TimeFXDrag : public RegionDrag
834 TimeFXDrag (Editor *, ArdourCanvas::Item *, RegionView *, std::list<RegionView*> const &);
836 void start_grab (GdkEvent *, Gdk::Cursor* c = 0);
837 void motion (GdkEvent *, bool);
838 void finished (GdkEvent *, bool);
842 /** Scrub drag in audition mode */
843 class ScrubDrag : public Drag
846 ScrubDrag (Editor *, ArdourCanvas::Item *);
848 void start_grab (GdkEvent *, Gdk::Cursor* c = 0);
849 void motion (GdkEvent *, bool);
850 void finished (GdkEvent *, bool);
854 /** Drag in range select mode */
855 class SelectionDrag : public Drag
865 SelectionDrag (Editor *, ArdourCanvas::Item *, Operation);
867 void start_grab (GdkEvent *, Gdk::Cursor* c = 0);
868 void motion (GdkEvent *, bool);
869 void finished (GdkEvent *, bool);
872 void setup_pointer_frame_offset ();
875 Operation _operation;
877 int _original_pointer_time_axis;
878 int _last_pointer_time_axis;
879 std::list<TimeAxisView*> _added_time_axes;
880 bool _time_selection_at_start;
883 /** Range marker drag */
884 class RangeMarkerBarDrag : public Drag
889 CreateTransportMarker,
893 RangeMarkerBarDrag (Editor *, ArdourCanvas::Item *, Operation);
895 void start_grab (GdkEvent *, Gdk::Cursor* c = 0);
896 void motion (GdkEvent *, bool);
897 void finished (GdkEvent *, bool);
900 bool allow_vertical_autoscroll () const {
904 bool y_movement_matters () const {
909 void update_item (ARDOUR::Location *);
911 Operation _operation;
912 ArdourCanvas::SimpleRect* _drag_rect;
916 /** Drag of rectangle to set zoom */
917 class MouseZoomDrag : public Drag
920 MouseZoomDrag (Editor *, ArdourCanvas::Item *);
922 void start_grab (GdkEvent *, Gdk::Cursor* c = 0);
923 void motion (GdkEvent *, bool);
924 void finished (GdkEvent *, bool);
927 std::pair<ARDOUR::framecnt_t, int> move_threshold () const {
928 return std::make_pair (4, 4);
935 /** Drag of a range of automation data, changing value but not position */
936 class AutomationRangeDrag : public Drag
939 AutomationRangeDrag (Editor *, ArdourCanvas::Item *, std::list<ARDOUR::AudioRange> const &);
941 void start_grab (GdkEvent *, Gdk::Cursor* c = 0);
942 void motion (GdkEvent *, bool);
943 void finished (GdkEvent *, bool);
946 bool x_movement_matters () const {
951 std::list<ARDOUR::AudioRange> _ranges;
952 AutomationTimeAxisView* _atav;
954 /** A line that is part of the drag */
956 boost::shared_ptr<AutomationLine> line; ///< the line
957 std::list<ControlPoint*> points; ///< points to drag on the line
958 std::pair<ARDOUR::framepos_t, ARDOUR::framepos_t> range; ///< the range of all points on the line, in session frames
959 XMLNode* state; ///< the XML state node before the drag
962 std::list<Line> _lines;
964 bool _nothing_to_drag;
967 #endif /* __gtk2_ardour_editor_drag_h_ */