104 lines
3.2 KiB
C++
104 lines
3.2 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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#pragma once
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#include <FL/Fl_Valuator.H> // for FL_HORIZONTAL and FL_VERTICAL
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#include "Meter.H"
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class DPM : public Meter
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{
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char peak_string[10];
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int _segments;
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int _pixels_per_segment;
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int _last_drawn_hi_segment;
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float _value;
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int pos ( float v )
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{
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return deflection( v ) * _segments;
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}
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static float _dim;
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static Fl_Color _gradient[];
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static Fl_Color _dim_gradient[];
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Fl_Color
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div_color ( int i )
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{
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return _gradient[ i * 127 / _segments ];
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}
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Fl_Color
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dim_div_color ( int i )
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{
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return _dim_gradient[ i * 127 / _segments ];
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}
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protected:
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virtual void draw_label ( void );
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virtual void draw ( void );
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virtual void resize ( int, int, int, int );
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public:
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DPM ( int X, int Y, int W, int H, const char *L = 0 );
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void value ( float v )
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{
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if ( _value != v )
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{
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if ( pos( v ) != pos( _value ) )
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Meter::value( v );
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}
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_value = v;
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}
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float value ( void ) const
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{
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return _value;
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}
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void pixels_per_segment ( int v ) { _pixels_per_segment = v; }
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float dim ( void ) const { return _dim; }
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void dim ( float v ) { _dim = v; if ( visible_r() ) redraw(); }
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static
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void
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blend ( int nbreaks, int* b, Fl_Color *c )
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{
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for ( int i = 0; i < nbreaks - 1; i++ )
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{
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int k = 0;
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for ( int j = b[i]; j <= b[i+1]; j++, k++ )
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_gradient[ j ] = fl_color_average( c[i+1], c[i], ( k ) / (float)(b[i+1] - b[i] ));
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}
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for ( int i = 0; i < 127; i++ )
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_dim_gradient[ i ] = fl_color_average( FL_BLACK, _gradient[ i ], _dim );
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}
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};
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