gtk2_ardour/fft_graph.h

   1 /*
   2     Copyright (C) 2006 Paul Davis
   3     Author: Sampo Savoleinen
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18
  19 */
  20
  21 #ifndef __ardour_fft_graph_h
  22 #define __ardour_fft_graph_h
  23
  24 #include "ardour/types.h"
  25 #include <fftw3.h>
  26
  27 #include <gtkmm/drawingarea.h>
  28 #include <gtkmm/treemodel.h>
  29 #include <gdkmm/color.h>
  30
  31 #include <glibmm/refptr.h>
  32
  33 #include <string>
  34
  35 #include "fft_result.h"
  36
  37 class AnalysisWindow;
  38
  39 class FFTGraph : public Gtk::DrawingArea
  40 {
  41         public:
  42
  43                 FFTGraph(int windowSize);
  44                 ~FFTGraph();
  45
  46                 void set_analysis_window(AnalysisWindow *a_window);
  47
  48                 int windowSize() const { return _windowSize; }
  49                 void setWindowSize(int windowSize);
  50
  51                 void redraw();
  52                 bool on_expose_event (GdkEventExpose* event);
  53
  54                 void on_size_request(Gtk::Requisition* requisition);
  55                 void on_size_allocate(Gtk::Allocation & alloc);
  56                 FFTResult *prepareResult(Gdk::Color color, std::string trackname);
  57
  58                 void set_show_minmax     (bool v) { _show_minmax     = v; redraw(); }
  59                 void set_show_normalized (bool v) { _show_normalized = v; redraw(); }
  60
  61         private:
  62
  63                 void update_size();
  64
  65                 void setWindowSize_internal(int windowSize);
  66
  67                 void draw_scales(Glib::RefPtr<Gdk::Window> window);
  68
  69                 static const int minScaleWidth = 512;
  70                 static const int minScaleHeight = 420;
  71
  72                 int currentScaleWidth;
  73                 int currentScaleHeight;
  74
  75                 static const int h_margin = 20;
  76                 static const int v_margin = 20;
  77                 Glib::RefPtr<Gdk::GC> graph_gc;
  78
  79                 int width;
  80                 int height;
  81
  82                 int _windowSize;
  83                 int _dataSize;
  84
  85                 Glib::RefPtr<Pango::Layout> layout;
  86                 AnalysisWindow *_a_window;
  87
  88                 fftwf_plan _plan;
  89
  90                 float *_out;
  91                 float *_in;
  92                 float *_hanning;
  93                 int *_logScale;
  94
  95                 bool _show_minmax;
  96                 bool _show_normalized;
  97
  98         friend class FFTResult;
  99 };
 100
 101 #endif /* __ardour_fft_graph_h */