diff options
Diffstat (limited to 'src/eqgraph.cpp')
| -rw-r--r-- | src/eqgraph.cpp | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/src/eqgraph.cpp b/src/eqgraph.cpp deleted file mode 100644 index 314e504d9..000000000 --- a/src/eqgraph.cpp +++ /dev/null @@ -1,163 +0,0 @@ -/*************************************************************************** - * Copyright (C) 2006 by Ilya Kotov * - * forkotov02@hotmail.ru * - * * - * 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; if not, write to the * - * Free Software Foundation, Inc., * - * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * - ***************************************************************************/ -#include <QPainter> - -#include "skin.h" -#include "eqgraph.h" - -EQGraph::EQGraph ( QWidget *parent ) - : PixmapWidget ( parent ) -{ - m_skin = Skin::getPointer(); - setPixmap ( m_skin->getEqPart ( Skin::EQ_GRAPH ) ); - clear(); - draw(); - connect ( m_skin, SIGNAL ( skinChanged() ), this, SLOT ( updateSkin() ) ); -} - - -EQGraph::~EQGraph() -{} - -void EQGraph::addValue ( int value ) -{ - if ( m_values.size() >= 10 ) - return; - m_values.append ( value ); - if ( m_values.size() == 10 ) - { - draw(); - } -} - -void EQGraph::clear () -{ - m_values.clear(); - update(); -} - -void EQGraph::init_spline ( double * x, double * y, int n, double * y2 ) -{ - int i, k; - double p, qn, sig, un, *u; - - //u = ( gfloat * ) g_malloc ( n * sizeof ( gfloat ) ); - u = new double[n]; - - y2[0] = u[0] = 0.0; - - for ( i = 1; i < n - 1; i++ ) - { - sig = ( ( double ) x[i] - x[i - 1] ) / ( ( double ) x[i + 1] - x[i - 1] ); - p = sig * y2[i - 1] + 2.0; - y2[i] = ( sig - 1.0 ) / p; - u[i] = - ( ( ( double ) y[i + 1] - y[i] ) / ( x[i + 1] - x[i] ) ) - - ( ( ( double ) y[i] - y[i - 1] ) / ( x[i] - x[i - 1] ) ); - u[i] = ( 6.0 * u[i] / ( x[i + 1] - x[i - 1] ) - sig * u[i - 1] ) / p; - } - qn = un = 0.0; - - y2[n - 1] = ( un - qn * u[n - 2] ) / ( qn * y2[n - 2] + 1.0 ); - for ( k = n - 2; k >= 0; k-- ) - y2[k] = y2[k] * y2[k + 1] + u[k]; - //g_free ( u ); - delete[] u; -} - -double EQGraph::eval_spline ( double xa[], double ya[], double y2a[], int n, double x ) -{ - int klo, khi, k; - double h, b, a; - - klo = 0; - khi = n - 1; - while ( khi - klo > 1 ) - { - k = ( khi + klo ) >> 1; - if ( xa[k] > x ) - khi = k; - else - klo = k; - } - h = xa[khi] - xa[klo]; - a = ( xa[khi] - x ) / h; - b = ( x - xa[klo] ) / h; - return ( a * ya[klo] + b * ya[khi] + - ( ( a * a * a - a ) * y2a[klo] + - ( b * b * b - b ) * y2a[khi] ) * ( h * h ) / 6.0 ); -} - -void EQGraph::draw() -{ - if(m_values.size()!=10) - { - setPixmap ( m_skin->getEqPart ( Skin::EQ_GRAPH ) ); - return; - } - - int i, y, ymin, ymax, py = 0; - double x[] = { 0, 11, 23, 35, 47, 59, 71, 83, 97, 109 }, yf[10]; - double *bands = new double[10]; - - for ( int i = 0; i<10; ++i ) - { - bands[i] = m_values.at ( i ); - } - QPixmap pixmap = m_skin->getEqPart ( Skin::EQ_GRAPH ); - - init_spline ( x, bands, 10, yf ); - for ( i = 0; i < 109; i++ ) - { - y = 9 - - ( int ) ( ( eval_spline ( x, bands, yf, 10, i ) * - 9.0 ) / 20.0 ); - if ( y < 0 ) - y = 0; - if ( y > 18 ) - y = 18; - if ( !i ) - py = y; - if ( y < py ) - { - ymin = y; - ymax = py; - } - else - { - ymin = py; - ymax = y; - } - py = y; - - QPainter paint ( &pixmap ); - paint.drawPixmap ( i, y, m_skin->getEqSpline ( y ) ) ; - - - } - setPixmap ( pixmap ); - delete [] bands; -} - -void EQGraph::updateSkin() -{ - draw(); -} - |