gtk2_ardour/plugin_eq_gui.h

   1 /*
   2     Copyright (C) 2008 Paul Davis
   3     Author: Sampo Savolainen
   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_plugin_eq_gui_h
  22 #define __ardour_plugin_eq_gui_h
  23
  24 #include <ardour/buffer_set.h>
  25 #include <ardour/plugin_insert.h>
  26 #include <ardour/plugin.h>
  27
  28 #include <gtkmm/table.h>
  29 #include <gtkmm/drawingarea.h>
  30 #include <gtkmm/combobox.h>
  31 #include <gtkmm/liststore.h>
  32
  33 class FFT;
  34
  35 class PluginEqGui : public Gtk::Table
  36 {
  37         public:
  38                 PluginEqGui(boost::shared_ptr<ARDOUR::PluginInsert>);
  39                 ~PluginEqGui();
  40
  41
  42
  43         private:
  44                 // Setup
  45                 void set_buffer_size(uint32_t);
  46                 void change_dB_scale();
  47
  48                 // Analysis
  49                 void run_analysis();
  50
  51                 // Drawing
  52                 virtual void on_hide();
  53                 virtual void on_show();
  54
  55                 void stop_updating();
  56                 void start_updating();
  57
  58                 void resize_analysis_area(Gtk::Allocation&);
  59                 void redraw_analysis_area();
  60
  61                 void draw_analysis_scales(cairo_t *);
  62                 bool expose_analysis_area(GdkEventExpose *);
  63
  64                 void draw_scales_power(Gtk::Widget *, cairo_t *);
  65                 void plot_amplitude(Gtk::Widget *,cairo_t *);
  66
  67                 void draw_scales_phase(Gtk::Widget *,cairo_t *);
  68                 void plot_phase(Gtk::Widget *,cairo_t *);
  69
  70                 // Helpers
  71                 bool timeout_callback();
  72                 void redraw_scales();
  73
  74
  75                 // Fields:
  76
  77                 // analysis parameters
  78                 float _samplerate;
  79
  80                 float _min_dB;
  81                 float _max_dB;
  82                 float _step_dB;
  83
  84
  85                 float _log_coeff;
  86                 float _log_max;
  87
  88                 nframes_t _buffer_size;
  89
  90                 // buffers
  91                 ARDOUR::BufferSet _bufferset;
  92
  93
  94                 // dimensions
  95                 float _analysis_width;
  96                 float _analysis_height;
  97
  98                 // My objects
  99                 FFT *_impulse_fft;
 100                 boost::shared_ptr<ARDOUR::Plugin> _plugin;
 101
 102                 // gui objects
 103                 Gtk::DrawingArea *_analysis_area;
 104                 cairo_surface_t *_analysis_scale_surface;
 105
 106
 107                 // dB scale selection:
 108                 class dBSelectionColumns : public Gtk::TreeModel::ColumnRecord
 109                 {
 110                   public:
 111                         dBSelectionColumns()
 112                                 { add(dBMin); add(dBMax); add(dBStep); add(name); }
 113
 114                         Gtk::TreeModelColumn<float> dBMin;
 115                         Gtk::TreeModelColumn<float> dBMax;
 116                         Gtk::TreeModelColumn<float> dBStep;
 117                         Gtk::TreeModelColumn<Glib::ustring> name;
 118                 };
 119
 120                 dBSelectionColumns dBColumns;
 121
 122                 Gtk::ComboBox *dBScaleCombo;
 123                 Glib::RefPtr<Gtk::ListStore> dBScaleModel;
 124
 125                 Gtk::CheckButton *_phase_button;
 126
 127                 // signals and connections
 128                 sigc::connection _update_connection;
 129                 sigc::connection _window_unmap_connection;
 130                 sigc::connection _window_map_connection;
 131 };
 132
 133 #endif
 134