+#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;
+}