562 lines
15 KiB
C
562 lines
15 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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#include "Sequence.H"
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#include "Timeline.H"
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#include <FL/fl_draw.H>
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#include "Track.H"
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#include "FL/event_name.H"
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#include "Transport.H" // for locate()
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#include "const.h"
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#include "debug.h"
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using namespace std;
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queue <Sequence_Widget *> Sequence::_delete_queue;
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Sequence::Sequence ( Track *track, const char *name ) : Fl_Widget( 0, 0, 0, 0 ), Loggable( true )
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{
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init();
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_track = track;
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if ( name )
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_name = strdup( name );
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// log_create();
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}
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Sequence::Sequence ( int X, int Y, int W, int H ) : Fl_Widget( X, Y, W, H ), Loggable( false )
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{
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init();
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}
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void
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Sequence::init ( void )
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{
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_track = NULL;
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_name = NULL;
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box( FL_DOWN_BOX );
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color( FL_BACKGROUND_COLOR );
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align( FL_ALIGN_LEFT );
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// clear_visible_focus();
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}
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Sequence::~Sequence ( )
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{
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DMESSAGE( "destroying sequence" );
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if ( _name )
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free( _name );
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if ( _widgets.size() )
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FATAL( "programming error: leaf destructor must call Sequence::clear()!" );
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if ( parent() )
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parent()->remove( this );
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}
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void
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Sequence::log_children ( void ) const
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{
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if ( id() > 0 )
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log_create();
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for ( std::list <Sequence_Widget*>::const_iterator i = _widgets.begin();
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i != _widgets.end(); ++i )
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(*i)->log_create();
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}
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/** remove all widgets from this sequence */
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void
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Sequence::clear ( void )
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{
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Loggable::block_start();
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while ( _widgets.size() )
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delete _widgets.front();
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Loggable::block_end();
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}
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/** given screen pixel coordinate X, return an absolute frame offset into this sequence */
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nframes_t
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Sequence::x_to_offset ( int X )
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{
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return timeline->xoffset + timeline->x_to_ts( X - x() );
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}
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/** sort the widgets in this sequence by position */
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void
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Sequence::sort ( void )
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{
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_widgets.sort( Sequence_Widget::sort_func );
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}
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/** return a pointer to the widget that /r/ overlaps, or NULL if none. */
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Sequence_Widget *
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Sequence::overlaps ( Sequence_Widget *r )
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{
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for ( list <Sequence_Widget *>::const_iterator i = _widgets.begin(); i != _widgets.end(); i++ )
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{
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if ( *i == r ) continue;
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if ( (*i)->overlaps( r ) )
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return *i;
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}
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return NULL;
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}
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void
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Sequence::handle_widget_change ( nframes_t start, nframes_t length )
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{
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timeline->wrlock();
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sort();
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timeline->unlock();
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// timeline->update_length( start + length );
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}
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Sequence_Widget *
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Sequence::widget_at ( nframes_t ts, int Y )
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{
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for ( list <Sequence_Widget *>::const_reverse_iterator r = _widgets.rbegin(); r != _widgets.rend(); ++r )
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if ( ts >= (*r)->start() && ts <= (*r)->start() + (*r)->length()
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&& Y >= (*r)->y() && Y <= (*r)->y() + (*r)->h() )
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return (*r);
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return NULL;
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}
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/** return a pointer to the widget under the current mouse event, or
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* NULL if no widget intersects the event coordinates */
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Sequence_Widget *
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Sequence::event_widget ( void )
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{
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nframes_t ets = timeline->xoffset + timeline->x_to_ts( Fl::event_x() - x() );
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return widget_at( ets, Fl::event_y() );
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}
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void
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Sequence::add ( Sequence_Widget *r )
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{
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// Logger _log( this );
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if ( r->sequence() )
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{
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r->redraw();
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r->sequence()->remove( r );
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// r->track()->redraw();
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}
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timeline->wrlock();
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r->sequence( this );
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_widgets.push_back( r );
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timeline->unlock();
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handle_widget_change( r->start(), r->length() );
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}
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void
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Sequence::remove ( Sequence_Widget *r )
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{
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timeline->wrlock();
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_widgets.remove( r );
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timeline->unlock();
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handle_widget_change( r->start(), r->length() );
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}
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static nframes_t
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abs_diff ( nframes_t n1, nframes_t n2 )
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{
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return n1 > n2 ? n1 - n2 : n2 - n1;
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}
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/** snap widget /r/ to nearest edge */
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void
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Sequence::snap ( Sequence_Widget *r )
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{
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const int snap_pixels = 10;
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const nframes_t snap_frames = timeline->x_to_ts( snap_pixels );
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/* snap to other widgets */
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if ( Timeline::snap_magnetic )
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{
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const int rx1 = r->start();
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const int rx2 = r->start() + r->length();
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for ( list <Sequence_Widget*>::const_iterator i = _widgets.begin(); i != _widgets.end(); i++ )
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{
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const Sequence_Widget *w = (*i);
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if ( w == r )
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continue;
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const int wx1 = w->start();
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const int wx2 = w->start() + w->length();
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if ( abs_diff( rx1, wx2 ) < snap_frames )
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{
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r->start( w->start() + w->length() + 1 );
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return;
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}
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if ( abs_diff( rx2, wx1 ) < snap_frames )
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{
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r->start( ( w->start() - r->length() ) - 1 );
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return;
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}
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}
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}
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nframes_t f = r->start();
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/* snap to beat/bar lines */
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if ( timeline->nearest_line( &f ) )
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r->start( f );
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}
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void
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Sequence::draw ( void )
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{
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if ( ! fl_not_clipped( x(), y(), w(), h() ) )
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return;
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fl_push_clip( x(), y(), w(), h() );
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/* draw the box with the ends cut off. */
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draw_box( box(), x() - Fl::box_dx( box() ) - 1, y(), w() + Fl::box_dw( box() ) + 2, h(), color() );
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int X, Y, W, H;
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fl_clip_box( x(), y(), w(), h(), X, Y, W, H );
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/* if ( Sequence_Widget::pushed() && Sequence_Widget::pushed()->sequence() == this ) */
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/* { */
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/* /\* make sure the Sequence_Widget::pushed widget is above all others *\/ */
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/* remove( Sequence_Widget::pushed() ); */
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/* add( Sequence_Widget::pushed() ); */
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/* } */
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// printf( "track::draw %d,%d %dx%d\n", X,Y,W,H );
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// timeline->draw_measure_lines( X, Y, W, H, color() );
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for ( list <Sequence_Widget *>::const_iterator r = _widgets.begin(); r != _widgets.end(); ++r )
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(*r)->draw_box();
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for ( list <Sequence_Widget *>::const_iterator r = _widgets.begin(); r != _widgets.end(); ++r )
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(*r)->draw();
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fl_pop_clip();
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}
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#include "FL/test_press.H"
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int
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Sequence::handle ( int m )
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{
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/* if ( m != FL_NO_EVENT ) */
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/* DMESSAGE( "%s", event_name( m ) ); */
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switch ( m )
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{
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case FL_KEYBOARD:
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case FL_SHORTCUT:
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if ( Fl::test_shortcut( FL_CTRL + FL_Right ) )
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{
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transport->locate( next( transport->frame ) );
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return 1;
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}
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else if ( Fl::test_shortcut( FL_CTRL + FL_Left ) )
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{
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transport->locate( prev( transport->frame ) );
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return 1;
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}
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else if ( Fl::test_shortcut( FL_CTRL + ' ' ) )
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{
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Sequence_Widget *r = widget_at( transport->frame, y() );
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if ( r )
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{
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if ( r->selected() )
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r->deselect();
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else
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r->select();
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}
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}
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else
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{
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switch ( Fl::event_key() )
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{
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case FL_Left:
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case FL_Right:
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case FL_Up:
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case FL_Down:
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/* this is a hack to override FLTK's use of arrow keys for
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* focus navigation */
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return timeline->handle_scroll( m );
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default:
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break;
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}
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}
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if ( Sequence_Widget::belowmouse() )
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return Sequence_Widget::belowmouse()->dispatch( m );
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case FL_NO_EVENT:
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/* garbage from overlay window */
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return 0;
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case FL_FOCUS:
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Fl_Widget::handle( m );
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redraw();
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return 1;
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case FL_UNFOCUS:
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Fl_Widget::handle( m );
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redraw();
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return 1;
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case FL_LEAVE:
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// DMESSAGE( "leave" );
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fl_cursor( FL_CURSOR_DEFAULT );
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Fl_Widget::handle( m );
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return 1;
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case FL_DND_DRAG:
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return 1;
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case FL_ENTER:
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// DMESSAGE( "enter" );
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if ( Sequence_Widget::pushed() )
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{
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if ( Sequence_Widget::pushed()->sequence()->class_name() == class_name() )
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{
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/* accept objects dragged from other sequences of this type */
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add( Sequence_Widget::pushed() );
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redraw();
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fl_cursor( FL_CURSOR_MOVE );
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}
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else
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fl_cursor( (Fl_Cursor)1 );
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}
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else
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if ( ! event_widget() )
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fl_cursor( cursor() );
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Fl_Widget::handle( m );
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return 1;
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case FL_DND_ENTER:
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case FL_DND_LEAVE:
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case FL_DND_RELEASE:
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return 1;
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case FL_MOVE:
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{
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Sequence_Widget *r = event_widget();
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if ( r != Sequence_Widget::belowmouse() )
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{
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if ( Sequence_Widget::belowmouse() )
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Sequence_Widget::belowmouse()->handle( FL_LEAVE );
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Sequence_Widget::belowmouse( r );
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if ( r )
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r->handle( FL_ENTER );
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}
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return 1;
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}
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default:
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{
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Sequence_Widget *r = Sequence_Widget::pushed() ? Sequence_Widget::pushed() : event_widget();
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/* if ( this == Fl::focus() ) */
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/* DMESSAGE( "Sequence widget = %p", r ); */
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if ( r )
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{
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int retval = r->dispatch( m );
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/* DMESSAGE( "retval = %d", retval ); */
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if ( m == FL_PUSH )
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take_focus();
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if ( retval )
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{
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if ( m == FL_PUSH )
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{
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if ( Sequence_Widget::pushed() )
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Sequence_Widget::pushed()->handle( FL_UNFOCUS );
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Sequence_Widget::pushed( r );
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r->handle( FL_FOCUS );
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}
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else if ( m == FL_RELEASE )
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Sequence_Widget::pushed( NULL );
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}
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Loggable::block_start();
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while ( _delete_queue.size() )
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{
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Sequence_Widget *t = _delete_queue.front();
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_delete_queue.pop();
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if ( Sequence_Widget::pushed() == t )
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Sequence_Widget::pushed( NULL );
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if ( Sequence_Widget::belowmouse() == t )
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{
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Sequence_Widget::belowmouse()->handle( FL_LEAVE );
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Sequence_Widget::belowmouse( NULL );
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}
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delete t;
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}
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Loggable::block_end();
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if ( m == FL_PUSH )
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return 1;
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else
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return retval;
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}
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else
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{
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if ( test_press( FL_BUTTON1 ) )
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{
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/* traditional selection model */
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Sequence_Widget::select_none();
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}
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return Fl_Widget::handle( m );
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}
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}
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}
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}
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/**********/
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/* Public */
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/**********/
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/** calculate the length of this sequence by looking at the end of the
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* least widget it contains */
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/** return the length in frames of this sequence calculated from the
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* right edge of the rightmost widget */
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nframes_t
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Sequence::length ( void ) const
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{
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nframes_t l = 0;
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for ( list <Sequence_Widget *>::const_iterator r = _widgets.begin(); r != _widgets.end(); ++r )
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l = max( l, (*r)->start() + (*r)->length() );
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return l;
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}
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/** return the location of the next widget from frame /from/ */
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nframes_t
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Sequence::next ( nframes_t from ) const
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{
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for ( list <Sequence_Widget*>::const_iterator i = _widgets.begin(); i != _widgets.end(); i++ )
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if ( (*i)->start() > from )
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return (*i)->start();
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if ( _widgets.size() )
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return _widgets.back()->start();
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else
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return 0;
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}
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/** return the location of the next widget from frame /from/ */
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nframes_t
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Sequence::prev ( nframes_t from ) const
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{
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for ( list <Sequence_Widget*>::const_reverse_iterator i = _widgets.rbegin(); i != _widgets.rend(); i++ )
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if ( (*i)->start() < from )
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return (*i)->start();
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if ( _widgets.size() )
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return _widgets.front()->start();
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else
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return 0;
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}
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/** delete all selected widgets in this sequence */
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void
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Sequence::remove_selected ( void )
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{
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Loggable::block_start();
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for ( list <Sequence_Widget *>::iterator r = _widgets.begin(); r != _widgets.end(); )
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if ( (*r)->selected() )
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{
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Sequence_Widget *t = *r;
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_widgets.erase( r++ );
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delete t;
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}
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else
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++r;
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Loggable::block_end();
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}
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/** select all widgets intersecting with the range defined by the
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* pixel coordinates X through W */
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void
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Sequence::select_range ( int X, int W )
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{
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nframes_t sts = x_to_offset( X );
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nframes_t ets = sts + timeline->x_to_ts( W );
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for ( list <Sequence_Widget *>::const_reverse_iterator r = _widgets.rbegin(); r != _widgets.rend(); ++r )
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if ( ! ( (*r)->start() > ets || (*r)->start() + (*r)->length() < sts ) )
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(*r)->select();
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}
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