306 lines
9.2 KiB
C++
306 lines
9.2 KiB
C++
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/*******************************************************************************/
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/* Copyright (C) 2008 Jonathan Moore Liles */
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/* */
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/* This program is free software; you can redistribute it and/or modify it */
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/* under the terms of the GNU General Public License as published by the */
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/* Free Software Foundation; either version 2 of the License, or (at your */
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/* option) any later version. */
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/* */
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/* This program is distributed in the hope that it will be useful, but WITHOUT */
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/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
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/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for */
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/* more details. */
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/* */
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/* You should have received a copy of the GNU General Public License along */
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/* with This program; see the file COPYING. If not,write to the Free Software */
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/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/*******************************************************************************/
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#pragma once
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#include "Track.H"
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#include "Loggable.H"
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#include "Timeline.H"
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#include <list>
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#include <algorithm>
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using namespace std;
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class Track_Widget;
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struct Drag
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{
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/* mouse coords at start of drag */
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int x;
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int y;
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int state;
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Track_Widget *original;
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Drag( int X, int Y ) : x( X ), y( Y ) { state = 0; }
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};
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struct Range
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{
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nframes_t offset; /* where on the timeline */
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nframes_t start; /* first sample from clip */
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nframes_t end; /* last sample from clip */
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};
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/* Base class for virtual widget on a track */
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class Track_Widget : public Loggable
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{
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static list <Track_Widget *> _selection; /* all the widgets making up the selection */
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/* FIXME: is this not the same as /pushed/? */
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static Track_Widget * _current; /* the widget initiating events that affect the selection */
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/* these are actually managed in the Track classes */
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static Track_Widget * _pushed; /* the widget receiving drag events (a copy) */
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static Track_Widget * _original; /* the original of the /pushed/ widget */
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static Track_Widget * _belowmouse; /* the widget below the mouse cursor */
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protected:
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Track *_track; /* track this region belongs to */
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Range _range; /* range for playback */
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Range *_r; /* range for editing / display (points to the same thing as above, except for when dragging etc) */
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Fl_Color _color; /* color of waveform */
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Fl_Color _box_color; /* color of background (box) */
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bool _shown;
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Drag *_drag;
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public:
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Track_Widget ( )
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{
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_track = NULL;
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_r = &_range;
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_r->offset = _r->start = _r->end = 0;
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_shown = true;
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_drag = NULL;
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}
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virtual ~Track_Widget ( )
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{
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redraw();
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_track->remove( this );
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_selection.remove( this );
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}
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Track_Widget ( const Track_Widget &rhs )
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{
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*_r = *rhs._r;
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_track = rhs._track;
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}
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virtual Track_Widget *clone ( const Track_Widget *r ) = 0;
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bool selected ( void )
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{
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return ::find( _selection.begin(), _selection.end(), this ) != _selection.end();
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}
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void select ( void )
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{
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if ( selected() )
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return;
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_selection.push_back( this );
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_selection.sort( sort_func );
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redraw();
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}
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void deselect ( void )
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{
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_selection.remove( this );
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redraw();
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}
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static void
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delete_selected ( void )
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{
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while ( _selection.size() )
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delete _selection.front();
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}
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static Track_Widget *current ( void ) { return Track_Widget::_current; }
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static Track_Widget *pushed ( void ) { return Track_Widget::_pushed; }
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static Track_Widget *belowmouse ( void ) { return Track_Widget::_belowmouse; }
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static void pushed ( Track_Widget *w ) { Track_Widget::_pushed = w; }
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static void belowmouse ( Track_Widget *w ) { Track_Widget::_belowmouse = w; }
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// static void pushed ( Track_Widget *w ) { Track_Widget::_pushed = w; }
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bool shown ( void ) const { return _shown; }
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void show ( void ) { _shown = true; }
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void hide ( void ) { _shown = false; }
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void begin_drag ( const Drag &d )
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{
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_drag = new Drag( d );
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_r = new Range( _range );
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}
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void end_drag ( void )
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{
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_range = *_r;
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delete _r;
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_r = &_range;
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delete _drag;
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_drag = NULL;
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}
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void
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offset ( nframes_t where )
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{
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if ( ! selected() )
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{
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redraw();
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_r->offset = where;
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}
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else
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{
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long d = where - _r->offset;
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for ( list <Track_Widget *>::iterator i = _selection.begin(); i != _selection.end(); i++ )
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{
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(*i)->redraw();
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if ( d < 0 )
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(*i)->_r->offset -= 0 - d;
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else
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(*i)->_r->offset += d;
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}
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}
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}
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int dispatch ( int m );
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Fl_Widget * parent ( void ) const { return _track; }
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int scroll_x ( void ) const { return timeline->ts_to_x( timeline->xoffset ); }
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nframes_t scroll_ts ( void ) const { return timeline->xoffset; }
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virtual int y ( void ) const { return _track->y(); }
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virtual int h ( void ) const { return _track->h(); }
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/* used by regions */
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virtual int x ( void ) const { return _r->offset < timeline->xoffset ? _track->x() - 1 : min( 32767, _track->x() + timeline->ts_to_x( _r->offset - timeline->xoffset ) ); }
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/* use this as x() when you need to draw lines between widgets */
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int line_x ( void ) const
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{
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return _r->offset < timeline->xoffset ? max( -32768, _track->x() - timeline->ts_to_x( timeline->xoffset - _r->offset )) : min( 32767, _track->x() + timeline->ts_to_x( _r->offset - timeline->xoffset ) );
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}
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virtual int w ( void ) const
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{
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int tx = timeline->ts_to_x( _r->offset );
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int rw;
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if ( tx < scroll_x() )
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rw = abs_w() - (scroll_x() - tx);
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else
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rw = abs_w();
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return min( rw, _track->w() );
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}
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int abs_x ( void ) const { return timeline->ts_to_x( _r->offset ); }
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virtual int abs_w ( void ) const { return timeline->ts_to_x( _r->end - _r->start ); }
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Fl_Color color ( void ) { return _color; }
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void color ( Fl_Color v ) { _color = v; }
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Fl_Color box_color ( void ) { return _box_color; }
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Track * track ( void ) const { return _track; }
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void track ( Track *t ) { _track = t; }
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nframes_t offset ( void ) const { return _r->offset; }
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// void offset ( nframes_t o ) { _r->offset = o; }
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void end ( nframes_t v ) { _r->end = v; }
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nframes_t end ( void ) const { return _r->end; }
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void start ( nframes_t v ) { _r->start = v; }
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nframes_t start ( void ) const { return _r->start; }
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virtual nframes_t length ( void ) const { return _r->end - _r->start; }
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virtual Fl_Boxtype box ( void ) const { return FL_UP_BOX; }
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virtual Fl_Align align ( void ) const { return (Fl_Align)0; }
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virtual void
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redraw ( void )
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{
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if ( ! (align() & FL_ALIGN_INSIDE) )
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{
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// FIXME: to better..
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_track->redraw();
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}
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else
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_track->damage( FL_DAMAGE_EXPOSE, x(), y(), w(), h() );
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}
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/* just draw a simple box */
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virtual void
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draw_box ( int X, int Y, int W, int H )
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{
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if ( x() > X + W || x() + w() < X )
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return;
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fl_draw_box( box(), x(), y(), w(), h(), _box_color );
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}
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virtual void
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draw ( int X, int Y, int W, int H )
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{
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if ( x() > X + W || x() + w() < X )
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return;
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draw_box( X, Y, W, H );
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}
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bool
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operator< ( const Track_Widget & rhs )
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{
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return _r->offset < rhs._r->offset;
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}
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bool
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operator<=( const Track_Widget & rhs )
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{
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return _r->offset <= rhs._r->offset;
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}
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virtual void draw_label ( const char *label, Fl_Align align, Fl_Color color=(Fl_Color)0 );
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virtual int handle ( int m );
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static bool
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sort_func ( Track_Widget *lhs, Track_Widget *rhs )
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{
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return *lhs < *rhs;
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}
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};
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