mirrors
/
non
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
non/Timeline/Timeline.C

1315 lines
29 KiB
C
Raw Blame History

This file contains invisible Unicode characters!

This file contains invisible Unicode characters that may be processed differently from what appears below. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to reveal hidden characters.

/*******************************************************************************/
/* 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. */
/*******************************************************************************/
#include "Timeline.H"
#include "Tempo_Sequence.H"
#include "Time_Sequence.H"
#include "Audio_Sequence.H"
#include "Control_Sequence.H"
#include <FL/Fl_Scrollbar.H>
#include "Annotation_Sequence.H"
// #include <FL/Fl_Image.H>
// #include <FL/Fl_RGB_Image.H> // needed for alpha blending
#include "Track.H"
bool Timeline::draw_with_measure_lines = true;
Timeline::snap_e Timeline::snap_to = Bars;
bool Timeline::snap_magnetic = true;
bool Timeline::follow_playhead = true;
bool Timeline::center_playhead = true;
const float UPDATE_FREQ = 0.02f;
#include "Playback_DS.H"
#include "Record_DS.H"
#include "Transport.H"
/** return the combined height of all visible children of (veritcal)
pack, /p/. This is necessary because pack sizes are adjusted only
when the relevant areas are exposes. */
static int
pack_visible_height ( const Fl_Pack *p )
{
int th = 0;
const Fl_Widget* const *w = p->array();
for ( int i = p->children(); i--; ++w )
if ( (*w)->visible() )
th += (*w)->h() + p->spacing();
return th;
}
/** recalculate the size of vertical scrolling area and inform scrollbar */
void
Timeline::adjust_vscroll ( void )
{
vscroll->value( _yposition, h() - rulers->h() - hscroll->h(), 0, pack_visible_height( tracks ) );
}
void
Timeline::cb_scroll ( Fl_Widget *w, void *v )
{
((Timeline*)v)->cb_scroll( w );
}
void
Timeline::cb_scroll ( Fl_Widget *w )
{
if ( w == vscroll )
{
tracks->position( tracks->x(), (rulers->y() + rulers->h()) - vscroll->value() );
yposition( vscroll->value() );
adjust_vscroll();
}
else
{
if ( hscroll->zoom_changed() )
{
nframes_t under_mouse = x_to_offset( Fl::event_x() );
_fpp = hscroll->zoom();
const int tw = tracks->w() - Track::width();
// hscroll->value( ts_to_x( xoffset ), tw, 0, ts_to_x( _length ) );
hscroll->value( max( 0, ts_to_x( under_mouse ) - ( Fl::event_x() - tracks->x() - Track::width() ) ),
tw, 0, ts_to_x( _length ) );
redraw();
}
xposition( hscroll->value() );
}
}
Timeline::Timeline ( int X, int Y, int W, int H, const char* L ) : Fl_Overlay_Window( X, Y, W, H, L )
{
box( FL_FLAT_BOX );
xoffset = 0;
_yposition = 0;
_old_yposition = 0;
_old_xposition = 0;
X = Y = 0;
p1 = p2 = 0;
{
Scalebar *o = new Scalebar( X, Y + H - 18, W - 18, 18 );
o->range( 0, 48000 * 300 );
// o->zoom_range( 1, 16384 );
// o->zoom_range( 1, 65536 << 4 );
o->zoom_range( 1, 20 );
o->zoom( 8 );
o->type( FL_HORIZONTAL );
o->callback( cb_scroll, this );
hscroll = o;
}
{
Fl_Scrollbar *o = new Fl_Scrollbar( X + W - 18, Y, 18, H - 18 );
o->type( FL_VERTICAL );
o->callback( cb_scroll, this );
vscroll = o;
}
{
Fl_Pack *o = new Fl_Pack( X + Track::width(), Y, (W - Track::width()) - vscroll->w(), H - hscroll->h(), "rulers" );
o->type( Fl_Pack::VERTICAL );
{
Tempo_Sequence *o = new Tempo_Sequence( 0, 0, 800, 24 );
o->color( fl_gray_ramp( 18 ) );
o->label( "Tempo" );
o->align( FL_ALIGN_LEFT );
tempo_track = o;
}
{
Time_Sequence *o = new Time_Sequence( 0, 24, 800, 24 );
o->color( fl_gray_ramp( 16 ) );
o->label( "Time" );
o->align( FL_ALIGN_LEFT );
time_track = o;
}
/* { */
/* Annotation_Sequence *o = new Annotation_Sequence( 0, 24, 800, 24 ); */
/* o->color( fl_gray_ramp( 'F' ) ); */
/* o->label( "Ruler" ); */
/* o->align( FL_ALIGN_LEFT ); */
/* ruler_track = o; */
/* } */
o->size( o->w(), o->child( 0 )->h() * o->children() );
rulers = o;
o->end();
}
{
// sample_rate() = engine->sample_rate();
_fpp = 8;
// _length = sample_rate() * 60 * 2;
/* FIXME: hack */
_length = -1;
{
Fl_Pack *o = new Fl_Pack( X, rulers->y() + rulers->h(), W - vscroll->w(), 1 );
o->type( Fl_Pack::VERTICAL );
o->spacing( 1 );
tracks = o;
o->end();
resizable( o );
}
}
/* rulers go above tracks... */
add( rulers );
/* make sure scrollbars are on top */
add( vscroll );
add( hscroll );
vscroll->range( 0, tracks->h() );
redraw();
end();
Fl::add_timeout( UPDATE_FREQ, update_cb, this );
}
float
Timeline::beats_per_minute ( nframes_t when ) const
{
/* return tempo_track->beats_per_minute( when ); */
}
int
Timeline::beats_per_bar ( nframes_t when ) const
{
time_sig t = time_track->time( when );
return t.beats_per_bar;
}
void
Timeline::beats_per_minute ( nframes_t when, float bpm )
{
tempo_track->add( new Tempo_Point( when, bpm ) );
}
void
Timeline::time ( nframes_t when, int bpb, int note_type )
{
time_track->add( new Time_Point( when, bpb, note_type ) );
}
/* struct BBT */
/* { */
/* int bar, beat, tick; */
/* BBT ( int bar, int beat, int tick ) : bar( bar ), beat( beat ), tick( tick ) */
/* { */
/* } */
/* }; */
/* /\** returns the BBT value for timestamp /when/ by examining the tempo/time maps *\/ */
/* BBT */
/* Timeline::bbt ( nframes_t when ) */
/* { */
/* Tempo_Sequence *tempo = (Tempo_Sequence*)rulers->child( 0 ); */
/* BBT bbt; */
/* for ( list <Sequence_Widget *>::const_iterator i = tempo.widgets.begin(); */
/* i != tempo.widgets.end(); ++i ) */
/* { */
/* Tempo_Point *p = *i; */
/* } */
/* } */
/************/
/* Snapping */
/************/
struct nearest_line_arg
{
nframes_t original;
nframes_t closest;
};
const int snap_pixel = 10;
static nframes_t
abs_diff ( nframes_t n1, nframes_t n2 )
{
return n1 > n2 ? n1 - n2 : n2 - n1;
}
void
nearest_line_cb ( nframes_t frame, const BBT &bbt, void *arg )
{
nearest_line_arg *n = (nearest_line_arg *)arg;
if ( Timeline::snap_to == Timeline::Bars && bbt.beat )
return;
if ( Timeline::snap_magnetic &&
abs_diff( frame, n->original ) > timeline->x_to_ts( snap_pixel ) )
return;
if ( abs_diff( frame, n->original ) < abs_diff( n->original, n->closest ) )
n->closest = frame;
}
/** Set the value pointed to by /frame/ to the frame number of the of
the nearest measure line to /when/. Returns true if the new value of
*frame is valid, false otherwise. */
bool
Timeline::nearest_line ( nframes_t when, nframes_t *frame ) const
{
if ( snap_to == None )
return false;
nearest_line_arg n = { when, -1 };
render_tempomap( when - x_to_ts( w() >> 1 ), x_to_ts( w() ), nearest_line_cb, &n );
*frame = n.closest;
return *frame != (nframes_t)-1;
}
nframes_t
Timeline::x_to_offset ( int x ) const
{
return x_to_ts( max( 0, x - Track::width() ) ) + xoffset;
}
/** draws a single measure line */
static void
draw_measure_cb ( nframes_t frame, const BBT &bbt, void *arg )
{
Fl_Color *color = (Fl_Color*)arg;
fl_color( FL_BLACK );
fl_line_style( FL_DASH, 0 );
if ( bbt.beat )
++color;
fl_color( *color );
const int x = timeline->ts_to_x( frame - timeline->xoffset ) + Track::width();
fl_line( x, 0, x, 5000 );
fl_line_style( FL_SOLID, 0 );
}
/* FIXME: wrong place for this */
const float ticks_per_beat = 1920.0;
/** return the BBT values for point in time /frame/ */
BBT
Timeline::solve_tempomap ( nframes_t frame ) const
{
position_info pos = render_tempomap( frame, 1, 0, 0 );
return pos.bbt;
}
/** draw appropriate measure lines inside the given bounding box */
position_info
Timeline::render_tempomap( nframes_t start, nframes_t length, measure_line_callback * cb, void *arg ) const
{
const nframes_t end = start + length;
position_info pos;
memset( &pos, 0, sizeof( pos ) );
BBT &bbt = pos.bbt;
const nframes_t samples_per_minute = sample_rate() * 60;
list <Sequence_Widget*> & tempo_map = tempo_track->_widgets;
/* tempo_map.sort( Sequence_Widget::sort_func ); */
float bpm = 120.0f;
time_sig sig;
sig.beats_per_bar = 4;
sig.beat_type = 4;
nframes_t f = 0;
nframes_t next = 0;
nframes_t frames_per_beat = samples_per_minute / bpm;
/* FIXME: don't we need to sort so that Time_Points always preceed Tempo_Points? */
for ( list <Sequence_Widget *>::iterator i = tempo_map.begin();
i != tempo_map.end(); ++i )
{
if ( ! strcmp( (*i)->class_name(), "Tempo_Point" ) )
{
const Tempo_Point *p = (Tempo_Point*)(*i);
bpm = p->tempo();
frames_per_beat = samples_per_minute / bpm;
}
else
{
const Time_Point *p = (Time_Point*)(*i);
sig = p->time();
}
{
list <Sequence_Widget *>::iterator n = i;
++n;
if ( n == tempo_map.end() )
next = end;
else
// next = min( (*n)->start(), end );
/* points may not always be aligned with beat boundaries, so we must align here */
next = (*n)->start() - ( ( (*n)->start() - (*i)->start() ) % frames_per_beat );
}
for ( ; f < next; ++bbt.beat, f += frames_per_beat )
{
if ( bbt.beat == sig.beats_per_bar )
{
bbt.beat = 0;
++bbt.bar;
}
if ( f + frames_per_beat >= end )
goto done;
else if ( f >= start )
{
/* in the zone */
if ( cb )
cb( f, bbt, arg );
}
}
}
done:
pos.frame = f;
pos.tempo = bpm;
pos.beats_per_bar = sig.beats_per_bar;
pos.beat_type = sig.beat_type;
assert( f < end );
/* FIXME: this this right? */
const nframes_t frames_per_tick = frames_per_beat / ticks_per_beat;
bbt.tick = ( ( ( end - f ) / frames_per_tick ) % (nframes_t)ticks_per_beat );
return pos;
}
void
Timeline::draw_measure_lines ( int X, int Y, int W, int H, Fl_Color color )
{
if ( ! draw_with_measure_lines )
return;
Fl_Color colors[] = { fl_color_average( FL_RED, color, 0.65f ),
fl_color_average( FL_BLACK, color, 0.65f ) };
const nframes_t start = x_to_offset( X );
const nframes_t length = x_to_ts( W );
fl_push_clip( X, Y, W, H );
render_tempomap( start, length, draw_measure_cb, &colors );
fl_pop_clip();
}
/** just like draw mesure lines except that it also draws the BBT values. */
void
Timeline::draw_measure_BBT ( int X, int Y, int W, int H, Fl_Color color )
{
// render_tempomap( X, Y, W, H, color, true );
}
void
Timeline::xposition ( int X )
{
// _old_xposition = xoffset;
/* FIXME: shouldn't have to do this... */
X = min( X, ts_to_x( _length ) - tracks->w() - Track::width() );
xoffset = x_to_ts( X );
damage( FL_DAMAGE_SCROLL );
}
void
Timeline::yposition ( int Y )
{
// _old_yposition = _yposition;
_yposition = Y;
damage( FL_DAMAGE_SCROLL );
}
void
Timeline::draw_clip ( void * v, int X, int Y, int W, int H )
{
Timeline *tl = (Timeline *)v;
fl_push_clip( X, Y, W, H );
/* fl_color( rand() ); */
/* fl_rectf( X, Y, X + W, Y + H ); */
tl->draw_box();
tl->draw_child( *tl->rulers );
fl_push_clip( tl->tracks->x(), tl->rulers->y() + tl->rulers->h(), tl->tracks->w(), tl->h() - tl->rulers->h() - tl->hscroll->h() );
tl->draw_child( *tl->tracks );
fl_pop_clip();
fl_pop_clip();
}
// static unsigned char *rect_image;
void
Timeline::resize ( int X, int Y, int W, int H )
{
Fl_Overlay_Window::resize( X, Y, W, H );
/* why is this necessary? */
rulers->resize( Track::width(), 0, W - Track::width() - vscroll->w(), rulers->h() );
/* why is THIS necessary? */
hscroll->resize( 0, H - 18, hscroll->w(), 18 );
vscroll->size( vscroll->w(), H - 18 );
}
void
Timeline::draw ( void )
{
int X, Y, W, H;
int bdx = 0;
int bdw = 0;
X = tracks->x() + bdx + 1;
Y = tracks->y();
W = tracks->w() - bdw - 1;
H = tracks->h();
adjust_vscroll();
/* if ( damage() & FL_DAMAGE_USER1 ) */
/* { */
/* /\* save the rectangle so we can draw it (darkened) in the overlay *\/ */
/* Rectangle &r = _selection; */
/* make_current(); */
/* rect_image = fl_read_image( NULL, r.x, r.y, r.w, r.h, 0 ); */
/* return; */
/* } */
if ( ( damage() & FL_DAMAGE_ALL ) || ( damage() & FL_DAMAGE_EXPOSE ) )
{
DMESSAGE( "complete redraw" );
draw_box( box(), 0, 0, w(), h(), color() );
fl_push_clip( 0, rulers->y(), w(), rulers->h() );
draw_child( *rulers );
fl_pop_clip();
fl_push_clip( tracks->x(), rulers->y() + rulers->h(), tracks->w(), hscroll->y() - (rulers->y() + rulers->h()) );
draw_child( *tracks );
fl_pop_clip();
draw_child( *hscroll );
draw_child( *vscroll );
redraw_overlay();
/* Rectangle &r = _selection; */
/* unsigned char *data = fl_read_image( NULL, r.x, r.y, r.w, r.h, 0 ); */
/* Fl_RGB_Image bi( data, r.w, r.h, 3 ); */
/* bi.color_average( FL_BLACK, 0.50f ); */
/* bi.draw( r.x, r.y ); */
/* delete[] data; */
/* if ( r.w && r.h ) */
/* { */
/* const unsigned char data[] = { 0, 127, 0, 96, */
/* 0, 96, 0, 127 }; */
/* Fl_RGB_Image bi( data, 2, 2, 2 ); */
/* Fl_Image *bi2 = bi.copy( r.w, r.h ); */
/* bi2->draw( r.x, r.y ); */
/* delete bi2; */
/* } */
goto done;
}
if ( damage() & FL_DAMAGE_SCROLL )
{
int dx = ts_to_x( _old_xposition ) - ts_to_x( xoffset );
int dy = _old_yposition - _yposition;
/* draw_child( *rulers ); */
if ( ! dy )
fl_scroll( rulers->x(), rulers->y(), rulers->w(), rulers->h(), dx, 0, draw_clip, this );
Y = rulers->y() + rulers->h();
H = h() - rulers->h() - hscroll->h();
if ( dy == 0 )
fl_scroll( X + Track::width(), Y, W - Track::width(), H, dx, dy, draw_clip, this );
else
fl_scroll( X, Y, W, H, dx, dy, draw_clip, this );
}
if ( damage() & FL_DAMAGE_CHILD )
{
fl_push_clip( rulers->x(), rulers->y(), rulers->w(), rulers->h() );
update_child( *rulers );
fl_pop_clip();
fl_push_clip( tracks->x(), rulers->y() + rulers->h(), tracks->w(), h() - rulers->h() - hscroll->h() );
update_child( *tracks );
fl_pop_clip();
update_child( *hscroll );
update_child( *vscroll );
}
done:
_old_xposition = xoffset;
_old_yposition = _yposition;
}
void
Timeline::draw_cursor ( nframes_t frame, Fl_Color color )
{
// int x = ( ts_to_x( frame ) - ts_to_x( xoffset ) ) + tracks->x() + Track::width();
if ( frame < xoffset )
return;
const int x = ts_to_x( frame - xoffset ) + tracks->x() + Track::width();
if ( x > tracks->x() + tracks->w() )
return;
fl_color( color );
const int y = rulers->y() + rulers->h();
const int h = this->h() - hscroll->h();
fl_push_clip( Track::width(), y, tracks->w(), h );
fl_line( x, y, x, h );
fl_color( fl_darker( color ) );
fl_line( x - 1, y, x - 1, h );
fl_color( FL_BLACK );
fl_line( x + 1, y, x + 1, h );
/* draw cap */
fl_color( color );
fl_begin_polygon();
fl_vertex( x - 8, y );
fl_vertex( x, y + 8 );
fl_vertex( x + 8, y );
fl_end_polygon();
/* draw cap outline */
fl_color( FL_BLACK );
fl_begin_line();
fl_vertex( x - 8, y );
fl_vertex( x, y + 8 );
fl_vertex( x + 8, y );
fl_end_line();
fl_pop_clip();
}
void
Timeline::draw_playhead ( void )
{
if ( p1 != p2 )
{
draw_cursor( p1, FL_BLUE );
draw_cursor( p2, FL_GREEN );
}
draw_cursor( transport->frame, FL_RED );
}
void
Timeline::redraw_playhead ( void )
{
static nframes_t last_playhead = -1;
if ( last_playhead != transport->frame )
{
redraw_overlay();
last_playhead = transport->frame;
if ( follow_playhead )
{
if ( center_playhead && active() )
xposition( max( 0, ts_to_x( transport->frame ) - ( ( tracks->w() - Track::width() ) >> 1 ) ) );
else if ( ts_to_x( transport->frame ) > ts_to_x( xoffset ) + ( tracks->w() - Track::width() ) )
xposition( ts_to_x( transport->frame ) );
}
}
}
/** called so many times a second to redraw the playhead etc. */
void
Timeline::update_cb ( void *arg )
{
Fl::repeat_timeout( UPDATE_FREQ, update_cb, arg );
Timeline *tl = (Timeline *)arg;
tl->redraw_playhead();
}
void
Timeline::draw_overlay ( void )
{
draw_playhead();
if ( ! ( _selection.w && _selection.h ) )
return;
fl_push_clip( tracks->x() + Track::width(), rulers->y() + rulers->h(), tracks->w() - Track::width(), h() - rulers->h() - hscroll->h() );
const Rectangle &r = _selection;
fl_color( FL_BLACK );
fl_line_style( FL_SOLID, 2 );
fl_rect( r.x + 2, r.y + 2, r.w, r.h );
fl_color( FL_MAGENTA );
fl_line_style( FL_DASH, 2 );
fl_rect( r.x, r.y, r.w, r.h );
fl_line( r.x, r.y, r.x + r.w, r.y + r.h );
fl_line( r.x + r.w, r.y, r.x, r.y + r.h );
/* fl_overlay_rect( r.x, r.y, r.w, r.h ); */
fl_line_style( FL_SOLID, 0 );
/* const unsigned char data[] = { 127, 127, 127, 96, */
/* 127, 96, 127, 40 }; */
/* Fl_RGB_Image bi( data, 2, 2, 2 ); */
/* Fl_Image *bi2 = bi.copy( r.w, r.h ); */
/* bi2->draw( r.x, r.y ); */
/* delete bi2; */
/* unsigned char *data = fl_read_image( NULL, r.x, r.y, r.w, r.h, 0 ); */
/* Fl_RGB_Image bi( rect_image, r.w, r.h, 3 ); */
/* bi.color_average( FL_BLACK, 0.50f ); */
/* bi.draw( r.x, r.y ); */
/* delete[] rect_image; */
/* rect_image = NULL; */
fl_pop_clip();
}
// #include "Sequence_Widget.H"
/** select all widgets in inside rectangle /r/ */
void
Timeline::select ( const Rectangle &r )
{
const int Y = r.y;
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
if ( ! ( t->y() > Y + r.h || t->y() + t->h() < Y ) )
t->select( r.x, r.y, r.w, r.h, true, true );
}
}
void
Timeline::delete_selected ( void )
{
Sequence_Widget::delete_selected();
}
void
Timeline::select_none ( void )
{
Sequence_Widget::select_none();
}
/** An unfortunate necessity for implementing our own DND aside from
* the (bogus) native FLTK system */
Track *
Timeline::track_under ( int Y )
{
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
if ( ! ( t->y() > Y || t->y() + t->h() < Y ) )
return t;
}
return NULL;
}
int
Timeline::handle ( int m )
{
static Drag *drag = NULL;
switch ( m )
{
case FL_FOCUS:
case FL_UNFOCUS:
// redraw();
return 1;
case FL_KEYBOARD:
case FL_SHORTCUT:
{
if ( Fl::event_state() & ( FL_ALT | FL_CTRL | FL_SHIFT ) )
/* we don't want any keys with modifiers... */
return 0;
switch ( Fl::event_key() )
{
case FL_Delete:
case FL_Home:
case FL_End:
/* keep scrollbar from eating these. */
return 0;
case 'p':
{
int X = Fl::event_x() - Track::width();
if ( X > 0 )
{
transport->locate( xoffset + x_to_ts( X ) );
}
return 1;
}
case '[':
{
int X = Fl::event_x() - Track::width();
if ( X > 0 )
{
p1 = xoffset + x_to_ts( X );
}
return 1;
}
case ']':
{
int X = Fl::event_x() - Track::width();
if ( X > 0 )
{
p2 = xoffset + x_to_ts( X );
}
return 1;
}
default:
return Fl_Overlay_Window::handle( m );
}
return 0;
}
default:
{
if ( m == FL_PUSH )
Fl::focus( this );
int r = Fl_Overlay_Window::handle( m );
if ( m != FL_RELEASE && r )
return r;
const int X = Fl::event_x();
const int Y = Fl::event_y();
switch ( m )
{
case FL_PUSH:
{
// take_focus();
if ( Fl::event_state() & ( FL_ALT | FL_CTRL | FL_SHIFT ) )
return 0;
if ( Fl::event_button1() )
{
assert( ! drag );
drag = new Drag( X - x(), Y - y() );
_selection.x = drag->x;
_selection.y = drag->y;
}
else if ( Fl::test_shortcut( FL_BUTTON3 ) && ! Fl::event_shift() )
{
Fl_Menu_Item menu[] =
{
{ "Add Track", 0, 0, 0, FL_SUBMENU },
{ "Audio", 0, 0, 0 },
{ 0 },
{ 0 },
};
const Fl_Menu_Item *r = menu->popup( X, Y, "Timeline" );
if ( r == &menu[1] )
{
/* FIXME: prompt for I/O config? */
Loggable::block_start();
/* add audio track */
char *name = get_unique_track_name( "Audio" );
Track *t = new Track( name );
Audio_Sequence *o = new Audio_Sequence( t );
// new Control_Sequence( t );
add_track( t );
t->sequence( o );
Loggable::block_end();
}
}
else
return 0;
break;
}
case FL_DRAG:
{
int ox = X - drag->x;
int oy = Y - drag->y;
if ( ox < 0 )
_selection.x = X;
if ( oy < 0 )
_selection.y = Y;
_selection.w = abs( ox );
_selection.h = abs( oy );
break;
}
case FL_RELEASE:
{
delete drag;
drag = NULL;
select( _selection );
_selection.w = _selection.h = 0;
break;
}
default:
return 0;
break;
}
redraw_overlay();
return 1;
}
}
}
void
Timeline::zoom_in ( void )
{
hscroll->zoom_in();
}
void
Timeline::zoom_out ( void )
{
hscroll->zoom_out();
}
/** zoom the display to show /secs/ seconds per screen */
void
Timeline::zoom ( float secs )
{
const int sw = tracks->w() - Track::width();
int fpp = (int)((secs * sample_rate()) / sw);
int p = 0;
while ( 1 << p < fpp ) p++;
hscroll->zoom( p );
redraw();
}
void
Timeline::zoom_fit ( void )
{
zoom( _length / (float)sample_rate() );
}
Track *
Timeline::track_by_name ( const char *name )
{
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
if ( ! strcmp( name, t->name() ) )
return t;
}
return NULL;
}
char *
Timeline::get_unique_track_name ( const char *name )
{
char pat[256];
strcpy( pat, name );
for ( int i = 1; track_by_name( pat ); ++i )
snprintf( pat, sizeof( pat ), "%s.%d", name, i );
return strdup( pat );
}
void
Timeline::add_track ( Track *track )
{
DMESSAGE( "added new track to the timeline" );
/* FIXME: do locking */
tracks->add( track );
/* FIXME: why is this necessary? doesn't the above add do DAMAGE_CHILD? */
redraw();
}
void
Timeline::remove_track ( Track *track )
{
DMESSAGE( "removed track from the timeline" );
/* FIXME: do locking */
/* FIXME: what to do about track contents? */
tracks->remove( track );
/* FIXME: why is this necessary? doesn't the above add do DAMAGE_CHILD? */
redraw();
}
/** Initiate recording for all armed tracks */
bool
Timeline::record ( void )
{
/* FIXME: right place for this? */
transport->recording = true;
Loggable::block_start();
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
if ( t->armed() && t->record_ds )
t->record_ds->start( transport->frame );
}
deactivate();
return true;
}
/** stop recording for all armed tracks */
void
Timeline::stop ( void )
{
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
if ( t->armed() && t->record_ds )
t->record_ds->stop( transport->frame );
}
Loggable::block_end();
activate();
transport->recording = false;
}
/**********/
/* Engine */
/**********/
/** call process() on each track header */
nframes_t
Timeline::process ( nframes_t nframes )
{
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
t->process( nframes );
}
/* FIXME: BOGUS */
return nframes;
}
/* THREAD: RT */
void
Timeline::seek ( nframes_t frame )
{
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
t->seek( frame );
}
}
/* THREAD: RT */
int
Timeline::seek_pending ( void )
{
int r = 0;
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
if ( t->playback_ds )
r += t->playback_ds->buffer_percent() < 50;
}
return r;
}
/* FIXME: shouldn't these belong to the engine? */
int
Timeline::total_input_buffer_percent ( void )
{
int r = 0;
int cnt = 0;
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
if ( t->record_ds )
{
++cnt;
r += t->record_ds->buffer_percent();
}
}
if ( ! cnt )
return 0;
return r / cnt;
}
int
Timeline::total_output_buffer_percent ( void )
{
int r = 0;
int cnt = 0;
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
if ( t->playback_ds )
{
++cnt;
r += t->playback_ds->buffer_percent();
}
}
if ( ! cnt )
return 0;
return r / cnt;
}
int
Timeline::total_playback_xruns ( void )
{
int r = 0;
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
if ( t->playback_ds )
r += t->playback_ds->xruns();
}
return r;
}
int
Timeline::total_capture_xruns ( void )
{
int r = 0;
for ( int i = tracks->children(); i-- ; )
{
Track *t = (Track*)tracks->child( i );
if ( t->record_ds )
r += t->record_ds->xruns();
}
return r;
}
Reference in New Issue View Git Blame Copy Permalink