280 lines
6.6 KiB
C
280 lines
6.6 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 "Panner.H"
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#include <math.h>
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/* 2D Panner widget. Supports various multichannel configurations. */
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/* multichannel layouts, in degrees */
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int Panner::_configs[][12] =
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{
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/* none, error condition? */
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{ NONE },
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/* mono, panner disabled */
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{ NONE },
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/* stereo */
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{ L, R },
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/* stereo + mono */
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{ L, R, C },
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/* quad */
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{ FL, FR, RL, RR },
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/* 5.1 */
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{ FL, FR, RL, RR, C },
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/* no such config */
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{ NONE },
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/* 7.1 */
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{ FL, FR, RL, RR, C, L, R },
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};
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/* speaker symbol */
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#define BP fl_begin_polygon()
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#define EP fl_end_polygon()
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#define BCP fl_begin_complex_polygon()
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#define ECP fl_end_complex_polygon()
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#define BL fl_begin_line()
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#define EL fl_end_line()
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#define BC fl_begin_loop()
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#define EC fl_end_loop()
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#define vv(x,y) fl_vertex(x,y)
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static void draw_speaker ( Fl_Color col )
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{
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fl_color(col);
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BP; vv(0.2,0.4); vv(0.6,0.4); vv(0.6,-0.4); vv(0.2,-0.4); EP;
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BP; vv(-0.6,0.8); vv(0.2,0.0); vv(-0.6,-0.8); EP;
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fl_color( fl_darker( col ) );
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BC; vv(0.2,0.4); vv(0.6,0.4); vv(0.6,-0.4); vv(0.2,-0.4); EC;
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BC; vv(-0.6,0.8); vv(0.2,0.0); vv(-0.6,-0.8); EC;
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}
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/** set X, Y, W, and H to the bounding box of point /p/ in screen coords */
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void
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Panner::point_bbox ( const Point *p, int *X, int *Y, int *W, int *H ) const
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{
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int tx, ty, tw, th;
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bbox( tx, ty, tw, th );
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tw -= pw();
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th -= ph();
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float px, py;
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p->axes( &px, &py );
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*X = tx + ((tw / 2) * px + (tw / 2));
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*Y = ty + ((th / 2) * py + (th / 2));
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*W = pw();
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*H = ph();
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}
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Panner::Point *
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Panner::event_point ( void )
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{
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for ( int i = _ins; i--; )
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{
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int px, py, pw, ph;
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Point *p = &_points[ i ];
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point_bbox( p, &px, &py, &pw, &ph );
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// printf( "%d, %d -- %d %d %d %d\n", Fl::event_x(), Fl::event_y(), px, py, pw, ph );
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if ( Fl::event_inside( px, py, pw, ph ) )
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return p;
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}
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return NULL;
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}
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void
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Panner::draw ( void )
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{
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draw_box();
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// draw_box( FL_FLAT_BOX, x(), y(), w(), h(), FL_BLACK );
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draw_label();
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if ( _bypassed )
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{
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fl_color( 0 );
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fl_font( FL_HELVETICA, 12 );
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fl_draw( "(bypass)", x(), y(), w(), h(), FL_ALIGN_CENTER );
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return;
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}
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int tw, th, tx, ty;
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bbox( tx, ty, tw, th );
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fl_push_clip( tx, ty, tw, th );
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fl_color( FL_WHITE );
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const int b = 10;
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tx += b;
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ty += b;
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tw -= b * 2;
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th -= b * 2;
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fl_arc( tx, ty, tw, th, 0, 360 );
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if ( _configs[ _outs ][0] >= 0 )
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{
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for ( int i = _outs; i--; )
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{
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int a = _configs[ _outs ][ i ];
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Point p( 1.2f, (float)a );
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float px, py;
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p.axes( &px, &py );
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fl_push_matrix();
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const int bx = tx + ((tw / 2) * px + (tw / 2));
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const int by = ty + ((th / 2) * py + (th / 2));
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fl_translate( bx, by );
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fl_scale( 5, 5 );
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a = 90 - a;
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fl_rotate( a );
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draw_speaker( FL_WHITE );
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fl_rotate( -a );
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fl_pop_matrix();
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}
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}
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/* ensure that points are drawn *inside* the circle */
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for ( int i = _ins; i--; )
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{
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Point *p = &_points[ i ];
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Fl_Color c = (Fl_Color)(10 + i);
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int px, py, pw, ph;
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point_bbox( p, &px, &py, &pw, &ph );
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/* draw point */
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fl_color( c );
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fl_pie( px, py, pw, ph, 0, 360 );
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/* draw echo */
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fl_color( c = fl_darker( c ) );
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fl_arc( px - 5, py - 5, pw + 10, ph + 10, 0, 360 );
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fl_color( c = fl_darker( c ) );
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fl_arc( px - 10, py - 10, pw + 20, ph + 20, 0, 360 );
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fl_color( c = fl_darker( c ) );
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fl_arc( px - 30, py - 30, pw + 60, ph + 60, 0, 360 );
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/* draw number */
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char pat[4];
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snprintf( pat, 4, "%d", i + 1 );
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fl_color( FL_BLACK );
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fl_font( FL_HELVETICA, ph + 2 );
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fl_draw( pat, px + 1, py + 1, pw - 1, ph - 1, FL_ALIGN_CENTER );
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/* draw line */
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/* fl_color( FL_WHITE ); */
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/* fl_line( bx + pw() / 2, by + ph() / 2, tx + (tw / 2), ty + (th / 2) ); */
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}
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fl_pop_clip();
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}
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/* return the current gain setting for the path in/out */
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Panner::Point
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Panner::point( int i )
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{
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return _points[ i ];
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}
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int
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Panner::handle ( int m )
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{
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static Point *drag;
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switch ( m )
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{
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case FL_PUSH:
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if ( Fl::event_button2() )
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{
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_bypassed = ! _bypassed;
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redraw();
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return 0;
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}
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else if ( Fl::event_button1() && ( drag = event_point() ) )
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return 1;
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else
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return 0;
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case FL_RELEASE:
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drag = NULL;
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return 1;
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case FL_DRAG:
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{
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float X = Fl::event_x() - x();
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float Y = Fl::event_y() - y();
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int tx, ty, tw, th;
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bbox( tx, ty, tw, th );
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/* if ( _outs < 3 ) */
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/* drag->angle( (float)(X / (tw / 2)) - 1.0f, 0.0f ); */
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/* else */
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drag->angle( (float)(X / (tw / 2)) - 1.0f, (float)(Y / (th / 2)) - 1.0f );
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printf( "%f %f\n", drag->a, drag->d );
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redraw();
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return 1;
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}
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}
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return 0;
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}
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