new-session-manager/Waveform.C

/*******************************************************************************/
/* 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 <stdio.h>

#include <FL/Enumerations.H>
#include <FL/Fl.H>

#include "Waveform.H"


#include <math.h>

extern Fl_Color velocity_colors[];


Waveform::Waveform ( int X, int Y, int W, int H, const char *L=0 ) : Fl_Widget( X, Y, W, H, L )
{


}

#if 0
void
Waveform::buble_draw ( void )
{
    int inc = 10;
    for ( tick_t x = 0; x < w() && x < _end; ++x )
    {
        float v1 = _peaks[ _start + (x * inc) ] / (float)127;
        int lh1 = (float)(h() / 2) * fabs( v1 );
        int ly1 = (h() / 2) - (lh1 / 2);


        fl_color( selection_color() );

        fl_color( velocity_colors[ 127 - (int)(127 * fabs( v1 )) ] );

        fl_pie( x, y() + ly1, inc, lh1, 0, 360 );

        fl_color( fl_darker( selection_color() ) );
        fl_arc( x, y() + ly1, inc, lh1, 0, 360 );

    }
}
#endif

int
Waveform::handle ( int m )
{

    if ( m == FL_PUSH )
    {
        switch ( Fl::event_button() )
        {
            case 1:
                _start += 100;
                _end += 100;
                redraw();
                break;
            case 3:
                _start -= 100;
                _end -= 100;
                redraw();
                break;
            default:
                return 0;
        }

        return 1;
    }

    return 0;
}

void
Waveform::draw ( void )
{
    fl_push_clip( x(), y(), w(), h() );
    draw_box( FL_PLASTIC_UP_BOX, x(), y(), w(), h(), color() );

    fl_push_matrix();

    fl_color( selection_color() );

    int j;

    float scale = 1;

    j = 0;
    for ( tick_t x = 0; x < w() && x < _end; ++x )
    {
        float lo = _peaks[ _start + j++ ] * scale;
        float hi = _peaks[ _start + j++ ] * scale;

        int mid = y() + (h() / 2);

        int rx = this->x() + x;

        fl_line( rx, mid + (h() * lo), rx, mid + (h() * hi) );
    }

    fl_color( fl_darker( fl_darker( selection_color() ) ) );

    fl_begin_line();

    j = 0;
    for ( tick_t x = 0; x < w() && x < _end; ++x )
    {
        float v = _peaks[ _start + j ] * scale;
        j += 2;
        fl_vertex( this->x() + x, y() + (h() / 2) + ((float)h() *  v ));
    }

    fl_end_line();

    fl_begin_line();

    j = 1;
    for ( tick_t x = 0; x < w() && x < _end; ++x )
    {
        float v = _peaks[ _start + j ] * scale;
        j += 2;
        fl_vertex( this->x() + x, y() + (h() / 2) + ((float)h() *  v ));
    }

    fl_end_line();


    fl_pop_matrix();

    fl_pop_clip();
}

#if 0
void
Waveform::draw ( void )
{
    fl_push_clip( x(), y(), w(), h() );
    draw_box( FL_PLASTIC_UP_BOX, x(), y(), w(), h(), color() );

    fl_push_matrix();

    int inc = 1;
    int j = 0;
    for ( tick_t x = 0; x < w() && x < _end; ++x )
    {
        float lo = _peaks[ _start + j++ ];
        float hi = _peaks[ _start + j++ ];

        int mid = y() + (h() / 2);

        int rx = this->x() + x;

        fl_color( selection_color() );

        fl_line( rx, mid + (h() * lo), rx, mid + (h() * hi) );
    }

    fl_pop_matrix();

}
#endif