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#include <iostream>
#include <boost/bind.hpp>
#include <wx/graphics.h>
#include "audio_plot.h"
#include "lib/decoder_factory.h"
#include "lib/audio_decoder.h"
#include "lib/audio_analysis.h"
#include "wx/wx_util.h"
using std::cout;
using std::vector;
using std::max;
using std::min;
using boost::bind;
using boost::shared_ptr;
AudioPlot::AudioPlot (wxWindow* parent, shared_ptr<AudioAnalysis> a, int c)
: wxPanel (parent)
, _analysis (a)
, _channel (c)
{
Connect (wxID_ANY, wxEVT_PAINT, wxPaintEventHandler (AudioPlot::paint), 0, this);
SetMinSize (wxSize (640, 512));
}
void
AudioPlot::paint (wxPaintEvent &)
{
wxPaintDC dc (this);
wxGraphicsContext* gc = wxGraphicsContext::Create (dc);
if (!gc) {
return;
}
int const width = GetSize().GetWidth();
float const xs = width / float (_analysis->points (_channel));
int const height = GetSize().GetHeight ();
float const ys = height / 60;
wxGraphicsPath grid = gc->CreatePath ();
gc->SetFont (gc->CreateFont (*wxSMALL_FONT));
for (int i = -60; i <= 0; i += 10) {
int const y = height - (i + 60) * ys;
grid.MoveToPoint (0, y);
grid.AddLineToPoint (width, y);
gc->DrawText (std_to_wx (String::compose ("%1dB", i)), width - 32, y - 12);
}
gc->SetPen (*wxLIGHT_GREY_PEN);
gc->StrokePath (grid);
wxGraphicsPath path[AudioPoint::COUNT];
for (int i = 0; i < AudioPoint::COUNT; ++i) {
path[i] = gc->CreatePath ();
path[i].MoveToPoint (0, height - (max (_analysis->get_point(_channel, 0)[i], -60.0f) + 60) * ys);
}
for (int i = 0; i < _analysis->points(_channel); ++i) {
for (int j = 0; j < AudioPoint::COUNT; ++j) {
path[j].AddLineToPoint (i * xs, height - (max (_analysis->get_point(_channel, i)[j], -60.0f) + 60) * ys);
}
}
gc->SetPen (*wxBLUE_PEN);
gc->StrokePath (path[AudioPoint::RMS]);
gc->SetPen (*wxRED_PEN);
gc->StrokePath (path[AudioPoint::PEAK]);
delete gc;
}
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