95 lines
2.9 KiB
C++
95 lines
2.9 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_Widget.H>
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#include <FL/fl_draw.H>
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#include <FL/Fl.H>
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#include <math.h>
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#include <vector>
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using namespace std;
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class Panner : public Fl_Widget
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{
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struct Point
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{
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/* axes */
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float x, y;
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Point ( ) : x( 0.0f ), y( 0.0f ) { }
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Point ( float X, float Y ) : x( X ), y( Y ) { }
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/* return the distance between the point and that referenced by /p/ */
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float
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distance ( const Point &p )
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{
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return sqrt( pow( x - p.x, 2 ) + pow( y - p.y, 2 ) );
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}
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};
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/* channel configuration */
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int _ins,
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_outs;
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vector <Point> _points;
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static int pw ( void ) { return 6; }
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static int ph ( void ) { return 6; }
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static int _configs[][12];
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void bbox ( int &X, int &Y, int &W, int &H )
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{
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W = w() - Fl::box_dw( box() );
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H = h() - Fl::box_dh( box() );
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X = x() + Fl::box_dx( box() );
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Y = y() + Fl::box_dy( box() );
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}
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Point * event_point ( void );
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Point angle_to_axes ( float a );
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public:
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Panner ( int X, int Y, int W, int H, const char *L = 0 ) :
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Fl_Widget( X, Y, W, H, L )
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{
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_ins = _outs = 4;
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_points.push_back( Point( -1, -1 ) );
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_points.push_back( Point( 1, 1 ) );
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_points.push_back( Point( -1, 1 ) );
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_points.push_back( Point( 1, -1 ) );
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_outs = 5;
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}
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virtual ~Panner ( ) { }
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virtual void draw ( void );
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virtual int handle ( int );
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};
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