gtk2_ardour/fft_graph.h

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