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//************************************************************
//=======-VUMeter
///// copyright : (C) 1999 by Martin Lorenz
////// email : lorenz@ch.tum.de
#include "vumeter.h"
#include "qtrec.h"
#include <qpe/config.h>
#include <qtimer.h>
#include <qdrawutl.h>
#include <opie2/odebug.h>
using namespace Opie::Core;
#include <math.h>
VUMeter::VUMeter(QWidget *parent, const char *name, const int tr)
: QWidget( parent, name )
{
int tracks = tr;
int i;
qWarning("initialize peakvalues");
for(i = 0; i < tracks + 2; i++) {
peak[i] = hold[i] = 32768;
holdTime[i] = 20;
}
readConf();
//rainbow effect
if( colorScheme == 0 ) {
for( i = 0; i < para.leds; i++) color[i] = green;
color[0] = color[1] = red;
color[2] = color[3] = color[4] = color[5] = yellow;
} else {
int j = para.leds - 4;
for( i = 0; i < para.leds; i++) {
int i16 = (j);
color[i] = QColor(( 15 - i16) * 16, 255, 255, QColor::Hsv);
// owarn << color[i].name() << oendl;
j--;
}
}
buffer = new QPixmap();
setBackgroundMode(NoBackground);
vuTimer = new QTimer(this,"vu timer");
connect(vuTimer, SIGNAL(timeout()), this , SLOT(timeSlot()));
}
VUMeter::~VUMeter(){
writeConf();
}
void VUMeter::update(){
// qWarning("vumeter update");
vuTimer->start(para.update, FALSE);
if (para.onOff) {
disconnect(vuTimer, SIGNAL(timeout()), this , SLOT(timeSlot()));
connect(vuTimer, SIGNAL(timeout()), this , SLOT(timeSlot()));
} else {
disconnect(vuTimer, SIGNAL(timeout()), this , SLOT(timeSlot()));
}
resize();
}
void VUMeter::slotOn() {
connect(vuTimer, SIGNAL(timeout()), this , SLOT(timeSlot()));
para.onOff=true;
}
void VUMeter::slotOff() {
disconnect(vuTimer, SIGNAL(timeout()), this , SLOT(timeSlot()));
para.onOff=false;
}
void VUMeter::slotProps() {
qDebug("VU-Dialog");
}
void VUMeter::paintEvent(QPaintEvent* e) {
Q_UNUSED(e);
bitBlt(this, 0, 0, buffer);
}
void VUMeter::mousePressEvent(QMouseEvent* e) {
Q_UNUSED(e);
}
void VUMeter::resizeEvent(QResizeEvent* event) {
buffer->resize(event->size());
resize();
}
void VUMeter::resize() {
qWarning("resize VUMeter painting");
if(buffer == 0)
qDebug("Dude NULL pixmap buffer!");
buffer->fill(black);
x = width() - 7; y = height() - 12;
dx = x / (tracks + 2); dy = y / (para.leds + 2); // size of one LED + black frame
ox = dx / 6 + 4 + (x - (tracks + 2) * dx) / 2;
oy = dy / 5 + 5 + (y - (para.leds + 2) * dy) / 2; //offsets
sx = (4 *dx) / 6; sy = (4 * dy) / 5; //size of one LED
QPainter painter; QString str; QFont font;
int i, textOffset=0;
if( painter.begin(buffer) ==FALSE)
qWarning("Painting pixmap did not work!");
else {
painter.setPen(green);
qDrawShadePanel ( &painter, 0,0, width(),height(), colorGroup(), TRUE, 2, 0);
if (2 * dy - 2 == 10) textOffset = 1;
font = painter.font(); font.setPointSize( 2 * dy - 2);
painter.setFont(font);
for(i = 0; i < tracks + 2; i++) {
painter.setPen(green); painter.setBrush(green);
str.sprintf("%d",i+1);
if (i == tracks) str.sprintf("L");
if (i == tracks + 1) str.sprintf("R");
painter.drawRect(ox + dx * i, oy + dy * (para.leds) - 2, sx, 2 * dy - 1);
painter.setPen(black);
painter.drawText(textOffset + ox + dx * i, oy + dy * (para.leds) - 2, sx, 2 * dy, AlignCenter, str);
}
painter.end();
paint();
}
}
void VUMeter::timeSlot() {
int i;
// getting stuck here
// qDebug("calling paint() from timeSlot()\n");
paint();
for(i = 0; i < tracks + 2; i++) {
peak[i] /= para.resoFactor;
}
}
void VUMeter::paint() {
int i, k;
float p, h ;
QPainter painter;
painter.begin(buffer);
int c;
for(i = 0; i < tracks + 2; i++) {
p = peak[i]; h = hold[i];
if (p >= 32767) p = 32768;
if (h >= 32767) h = 32768;
for(k = para.leds + 1; k >= 2; k--) {
c = para.leds + 1 - k;
if (p >= 32768) { //LED on
painter.setBrush(color[c]);
} else { //LED off
painter.setBrush(color[c].dark(300));
}
if (h >= 32768) { //LED-Frame on
painter.setPen(color[c]);
} else { //LED off
painter.setPen(color[c].dark(300));
}
painter.drawRect(ox + dx * i, oy + dy * c, sx, sy);
p *= para.resoFactor; h *= para.resoFactor;
}
if ( --holdTime[i] <= 0) hold[i] = peak[i];
}
painter.end();
bitBlt(this, 0, 0, buffer);
}
void VUMeter::setPeak(int a[]) {
int i;
// qDebug("set peak int");
// cerr<<"setting peak\n";
for(i = 0; i < tracks + 2; i++) {
if (a[i] > i_peak[i]) i_peak[i] = a[i];
if (a[i] > i_hold[i]) { i_hold[i] = a[i]; holdTime[i] = para.hold; }
}
paint();
}
void VUMeter::setPeak(float a[]) {
int i;
for(i = 0; i < tracks + 2; i++) {
if (a[i] > peak[i]) peak[i] = a[i];
if (a[i] > hold[i]) { hold[i] = a[i]; holdTime[i] = para.hold; }
}
paint();
}
void VUMeter::startTimer() {
vuTimer->start(para.update, FALSE);
}
void VUMeter::stopTimer() {
vuTimer->stop();
}
void VUMeter::readConf() {
Config config("OpieRec");
config.setGroup("VU-Meter");
para.onOff = config.readBoolEntry("OnOff", true);
para.update = config.readNumEntry("Update", 25);
para.hold = config.readNumEntry("Hold", 20);
para.reso = config.readNumEntry("Resolution", 3);
para.leds = config.readNumEntry("LEDs", 20);
para.resoFactor = pow(2, para.reso / 6.0);
colorScheme = config.readNumEntry("colorScheme", 1);
}
void VUMeter::writeConf() {
Config config("OpieRec");
config.setGroup("VU-Meter");
config.writeEntry("OnOff", para.onOff);
config.writeEntry("Update", para.update);
config.writeEntry("Hold", para.hold);
config.writeEntry("Resolution", para.reso);
config.writeEntry("LEDs", para.leds);
}
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