git.sesse.net Git - kdenlive/blob - src/audiosignal.cpp

   1 #include "audiosignal.h"
   2
   3 #include <QVBoxLayout>
   4 #include <QLabel>
   5 #include <QPainter>
   6 #include <QDebug>
   7 #include <QList>
   8
   9
  10 AudioSignal::AudioSignal(QWidget *parent):QWidget(parent)
  11 {
  12         //QVBoxLayout *vbox=new QVBoxLayout(this);
  13         //label=new QLabel();
  14         //vbox->addWidget(label);
  15         setMaximumHeight(12);
  16         col << Qt::green <<  Qt::green << Qt::green << Qt::green << Qt::green << Qt::green << Qt::green << Qt::green << Qt::green << Qt::green ;
  17         col << Qt::yellow <<  Qt::yellow << Qt::yellow << Qt::yellow << Qt::yellow  ;
  18         col << Qt::darkYellow << Qt::darkYellow << Qt::darkYellow;
  19         col << Qt::red << Qt::red;
  20 }
  21
  22
  23 void AudioSignal::showAudio(QByteArray arr)
  24 {
  25         channels=arr;
  26         update();
  27 }
  28 void AudioSignal::paintEvent(QPaintEvent* e)
  29 {
  30     QPainter p(this);
  31     //p.begin();
  32         //p.fillRect(0,0,(unsigned char)channels[0]*width()/255,height()/2,QBrush(Qt::SolidPattern));
  33         //p.fillRect(0,height()/2,(unsigned char)channels[1]*width()/255,height()/2,QBrush(Qt::SolidPattern));
  34         int numchan=channels.size();
  35         for (int i=0;i<numchan;i++){
  36                 int maxx=(unsigned char)channels[i]*width()/255;
  37                 int xdelta=width()/20;
  38                 int y1=height()*i/numchan;
  39                 int _h=height()/numchan-1;
  40                 for (int x=0;x<20;x++){
  41                                 if (maxx>0){
  42                                 p.fillRect(x*xdelta,y1,maxx>xdelta?xdelta-1:maxx-1,_h,QBrush(col.at(x),Qt::SolidPattern));
  43                                 maxx-=xdelta;
  44                                 }
  45                 }
  46         }
  47     p.end();
  48 }
  49 #include "audiosignal.moc"