non/Timeline/Sequence_Widget.H

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/*******************************************************************************/
/* Copyright (C) 2008 Jonathan Moore Liles */
/* */
/* 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; see the file COPYING. If not,write to the Free Software */
/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/*******************************************************************************/
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#pragma once
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#include "Sequence.H"
#include "Loggable.H"
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#include "Timeline.H"
#include <list>
#include <algorithm>
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using std::min;
using std::max;
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class Sequence_Widget;
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struct Drag
{
/* mouse coords at offset of drag */
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int x;
int y;
int state;
nframes_t start;
Drag( int X, int Y, nframes_t start=0 ) : x( X ), y( Y ), start( start ) { state = 0; }
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};
/* most common position description. /offset/ is only used by Regions,
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but it's more convenient to have it here */
struct Range
{
nframes_t start; /* where on the timeline */
nframes_t offset; /* first sample from clip */
nframes_t length; /* total number of samples */
void
trim_left ( long n )
{
start -= n;
offset -= n;
length += n;
}
void
trim_right ( long n )
{
length += n;
}
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void
set_left ( nframes_t f )
{
offset += f - start;
length -= f - start;
start = f;
}
void
set_right ( nframes_t f )
{
length = f - start;
}
Range ( ) : start( 0 ), offset( 0 ), length( 0 )
{
}
};
/* Used by time/tempo points or any other child of Sequence_Widget
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which must be locked to a point in musical time rather than wallclock
time. Bar and beat start at 1. */
struct BBT
{
unsigned short bar;
unsigned char beat;
unsigned short tick;
BBT ( ) : bar( 0 ), beat( 0 ), tick( 0 )
{
}
};
/* FIXME: wrong place for this */
struct position_info
{
nframes_t frame;
float tempo;
int beats_per_bar;
int beat_type;
BBT bbt;
};
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#define SEQUENCE_WIDGET_CLONE_FUNC(class) \
virtual Sequence_Widget *clone ( void ) const \
{ \
return new class ( *this ); \
}
/* Base class for virtual widget on a track */
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class Sequence_Widget : public Loggable
{
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static std::list <Sequence_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 Sequence_Widget * _current; /* the widget initiating events that affect the selection */
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/* these are actually managed in the Sequence classes */
static Sequence_Widget * _pushed; /* the widget receiving drag events (a copy) */
static Sequence_Widget * _original; /* the original of the /pushed/ widget */
static Sequence_Widget * _belowmouse; /* the widget below the mouse cursor */
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static Fl_Color _selection_color;
protected:
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Sequence *_sequence; /* track this region belongs to */
Range _range; /* range for playback */
Range *_r; /* range for editing / display (points to the same thing as above, except for when dragging etc) */
Fl_Color _color; /* color of waveform */
Fl_Color _box_color; /* color of background (box) */
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Drag *_drag;
virtual void get ( Log_Entry &e ) const;
virtual void set ( Log_Entry &e );
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Sequence_Widget ( const Sequence_Widget &rhs );
Sequence_Widget ( );
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const Sequence_Widget &
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operator= ( const Sequence_Widget &rhs );
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public:
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virtual ~Sequence_Widget ( );
virtual Sequence_Widget *clone ( void ) const = 0;
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bool selected ( void ) const;
void select ( void );
void deselect ( void );
void remove ( void );
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static void delete_selected ( void );
static void select_none ( void );
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static Sequence_Widget *current ( void ) { return Sequence_Widget::_current; }
static Sequence_Widget *pushed ( void ) { return Sequence_Widget::_pushed; }
static Sequence_Widget *belowmouse ( void ) { return Sequence_Widget::_belowmouse; }
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static void pushed ( Sequence_Widget *w ) { Sequence_Widget::_pushed = w; }
static void belowmouse ( Sequence_Widget *w ) { Sequence_Widget::_belowmouse = w; }
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void begin_drag ( const Drag &d );
void end_drag ( void );
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int dispatch ( int m );
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Fl_Widget * parent ( void ) const { return _sequence; }
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int scroll_x ( void ) const { return timeline->ts_to_x( timeline->xoffset ); }
nframes_t scroll_ts ( void ) const { return timeline->xoffset; }
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virtual int y ( void ) const { return _sequence->y(); }
virtual int h ( void ) const { return _sequence->h(); }
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/* used by regions */
virtual int x ( void ) const
{
return _r->start < timeline->xoffset ? _sequence->x() : min( _sequence->x() + _sequence->w(), _sequence->x() + timeline->ts_to_x( _r->start - timeline->xoffset ) );
}
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/* use this as x() when you need to draw lines between widgets */
int line_x ( void ) const
{
return _r->start < timeline->xoffset ? max( -32768, _sequence->x() - timeline->ts_to_x( timeline->xoffset - _r->start )) : min( 32767, _sequence->x() + timeline->ts_to_x( _r->start - timeline->xoffset ) );
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}
virtual int w ( void ) const
{
int tx = timeline->ts_to_x( _r->start );
int rw;
if ( tx < scroll_x() )
rw = abs_w() - (scroll_x() - tx);
else
rw = abs_w();
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return min( rw, _sequence->w() );
}
int abs_x ( void ) const { return timeline->ts_to_x( _r->start ); }
virtual int abs_w ( void ) const { return timeline->ts_to_x( _r->length ); }
Fl_Color color ( void ) const { return _color; }
void color ( Fl_Color v ) { _color = v; }
Fl_Color box_color ( void ) const { return _box_color; }
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void box_color ( Fl_Color v ) { _box_color = v; }
virtual Fl_Color selection_color ( void ) const { return _selection_color; }
virtual void selection_color ( Fl_Color v ) { _selection_color = v; }
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Sequence * sequence ( void ) const { return _sequence; }
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void sequence ( Sequence *t ) { _sequence = t; }
nframes_t start ( void ) const { return _r->start; }
/* void start ( nframes_t o ) { _r->start = o; } */
void start ( nframes_t where );
void length ( nframes_t v ) { _r->length = v; }
virtual nframes_t length ( void ) const { return _r->length; }
void offset ( nframes_t v ) { _r->offset = v; }
nframes_t offset ( void ) const { return _r->offset; }
/** convert a screen x coord into an start into the region */
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nframes_t x_to_offset ( int X )
{
return timeline->x_to_ts( scroll_x() + ( X - _sequence->x() ) ) - _r->start;
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}
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int active_r ( void ) const { return _sequence->active_r(); }
/** returns true if widget /w/ begins and ends completely within the range of this widget */
bool contains ( const Sequence_Widget *w ) const
{
return w->start() >= start() && w->start() + w->length() <= start() + length();
}
/** returns true of widget /w/ overlaps this widget in any place */
bool overlaps ( const Sequence_Widget *w ) const
{
return ! ( w->start() > start() + length() || w->start() + w->length() < start() );
}
virtual Fl_Boxtype box ( void ) const { return FL_UP_BOX; }
virtual Fl_Align align ( void ) const { return (Fl_Align)0; }
virtual void
redraw ( void )
{
if ( ! (align() & FL_ALIGN_INSIDE) )
{
// FIXME: to better..
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_sequence->redraw();
}
else
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_sequence->damage( FL_DAMAGE_EXPOSE, x(), y(), w(), h() );
}
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virtual void draw_box ( void );
virtual void draw ( void );
bool
operator< ( const Sequence_Widget & rhs ) const
{
return _r->start < rhs._r->start;
}
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bool
operator<=( const Sequence_Widget & rhs ) const
{
return _r->start <= rhs._r->start;
}
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 );
static bool
sort_func ( const Sequence_Widget *lhs, const Sequence_Widget *rhs )
{
return *lhs < *rhs;
}
};