non/Track.C

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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. */
/*******************************************************************************/
#include "Track.H"
#include "Timeline.H"
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#include "Region.H"
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#include <FL/fl_draw.H>
void
Track::draw ( void )
{
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Fl_Group::draw();
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fl_push_clip( x(), y(), w(), h() );
for ( list <Region *>::iterator r = _regions.begin(); r != _regions.end(); r++ )
{
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// (*r)->draw( timeline.xoffset + x(), y(), w(), h() );
(*r)->draw( x(), y(), w(), h() );
}
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fl_pop_clip();
}
void
Track::remove_region ( Region *r )
{
_regions.remove( r );
}
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Region *
Track::event_region ( void )
{
// FIXME: doesn't handle overlap!
for ( list <Region *>::iterator r = _regions.begin(); r != _regions.end(); r++ )
{
int X = timeline.ts_to_x( (*r)->offset() ) - timeline.xoffset;
int W = timeline.ts_to_x( (*r)->length() );
if ( Fl::event_x() > X && Fl::event_x() < X + W )
return (*r);
}
return NULL;
}
void
Track::add ( Region *r )
{
if ( r->track() )
{
r->track()->remove_region( r );
r->track()->redraw();
}
_regions.push_back( r );
r->track( this );
// Fl_Group::add( r );
// add( r );
// r->position( r->x(), y() );
// r->redraw();
}
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/* snap /r/ to nearest edge */
void
Track::snap ( Region *r )
{
const int snap_pixels = 10;
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int rx1 = r->x();
int rx2 = r->x() + r->w();
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for ( list <Region*>::iterator i = _regions.begin(); i != _regions.end(); i++ )
{
const Region *w = (*i);
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if ( w == r )
continue;
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int wx1 = w->x();
int wx2 = w->x() + w->w();
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if ( abs( rx1 - wx2 ) < snap_pixels )
{
r->offset( w->offset() + w->length() + 1 );
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printf( "snap: %lu | %lu\n", w->offset() + w->length(), r->offset() );
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goto done;
}
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if ( abs( rx2 - wx1 ) < snap_pixels )
{
r->offset( ( w->offset() - r->length() ) - 1 );
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printf( "snap: %lu | %lu\n", r->offset() + r->length(), w->offset() );
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goto done;
}
}
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// r->offset( timeline.x_to_ts( r->x() ) );
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done:
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return;
// r->resize();
// r->position( rx1, y() );
}
int
Track::handle ( int m )
{
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static Region *current_region;
switch ( m )
{
case FL_DND_DRAG:
case FL_DND_ENTER:
case FL_ENTER:
return 1;
case FL_DND_LEAVE:
case FL_DND_RELEASE:
return 1;
case FL_PASTE:
{
const char *text = Fl::event_text();
char *file;
if ( ! sscanf( text, "file://%a[^\r\n]\n", &file ) )
{
printf( "invalid drop \"%s\"\n", text );
return 0;
}
printf( "pasted file \"%s\"\n", file );
Clip *c = Clip::from_file( file );
if ( ! c )
{
free( file );
return 0;
}
Region *r = new Region( c );
r->offset( timeline.x_to_ts( Fl::event_x() ) );
// r->position( Fl::event_x(), r->y() );
this->add( r );
return 1;
}
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case FL_MOVE:
/* these aren't used, so don't bother doing lookups for them */
return 1;
default:
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{
Region *r = event_region();
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if ( current_region )
r = current_region;
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if ( r )
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{
int retval = r->handle( m );
if ( retval && m == FL_PUSH )
current_region = r;
if ( retval && m == FL_RELEASE )
current_region = NULL;
return retval;
}
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else
return Fl_Group::handle( m );
}
}
}