diff --git a/VU_Meter.C b/VU_Meter.C new file mode 100644 index 0000000..713727e --- /dev/null +++ b/VU_Meter.C @@ -0,0 +1,83 @@ + +/*******************************************************************************/ +/* 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. */ +/*******************************************************************************/ + +/* a VU meter, either horizontal or vertical. Color is a gradient + from color() to selection_color(). box() is used to draw the + individual 'lights'. division() controls how many 'lights' there + are. */ + +#include "VU_Meter.H" + +#include +#include + +VU_Meter::VU_Meter ( int X, int Y, int W, int H, const char *L ) : + Fl_Widget( X, Y, W, H, L ) +{ + + divisions( 32 ); + type( FL_VERTICAL ); + + dim( 0.80f ); + + color( FL_GREEN ); + selection_color( FL_RED ); + + box( FL_ROUNDED_BOX ); + + minimum( 0.0f ); + maximum( 1.0f ); + + value( 0.4f ); +} + +void +VU_Meter::draw ( void ) +{ + int v; + + v = (value() / maximum()) * _divisions; + + draw_box( FL_FLAT_BOX, x(), y(), w(), h(), FL_BLACK ); + + int bh = h() / _divisions; + int bw = w() / _divisions; + + int b = 0; + + for ( int p = _divisions; p > 0; p-- ) + { + Fl_Color c = fl_color_average( selection_color(), color(), (float)p / _divisions ); + + if ( ! active_r() ) + c = fl_inactive( c ); + + if ( p > v ) + c = fl_color_average( FL_BLACK, c, _dim ); + + if ( _type == FL_HORIZONTAL ) + draw_box( box(), x() + (p * bw), y(), bw, h(), c ); + else + draw_box( box(), x(), y() + h() - (p * bh), w(), bh, c ); + + } + + // we don't care about the label + // draw_label (tx, y() + by, tw, h() - bh); +} diff --git a/VU_Meter.H b/VU_Meter.H new file mode 100644 index 0000000..80282e5 --- /dev/null +++ b/VU_Meter.H @@ -0,0 +1,62 @@ + +/*******************************************************************************/ +/* 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. */ +/*******************************************************************************/ + +#pragma once + +#include // for FL_HORIZONTAL and FL_VERTICAL + +class VU_Meter : public Fl_Widget +{ + + float _value; + float _minimum; + float _maximum; + + int _type; + int _divisions; + float _dim; + +protected: + + virtual void draw ( void ); + +public: + + VU_Meter ( int X, int Y, int W, int H, const char *L = 0 ); + + + void maximum( float v ) { _maximum = v; redraw(); } + float maximum ( void ) const { return _maximum; } + + void minimum ( float v ) { _minimum = v; redraw(); } + float minimum ( void ) const { return _minimum; } + + void value ( float v ) { _value = v; redraw(); } + float value ( void ) const { return _value; } + + bool divisions ( void ) const { return _divisions; } + void divisions ( int v ) { _divisions = v; } + + int type ( void ) const { return _type; } + void type ( int v ) { _type = v; } + + float dim ( void ) const { return _dim; } + void dim ( float v ) { _dim = v; redraw(); } + +};