Rename _size -> _video_size
[dcpomatic.git] / src / wx / colour_conversion_editor.cc
index 3d4363cb970e65c6e1008d7569b54c5ffafde478..05ec4a65c1c26efc3666c83c4a49b005e514dba9 100644 (file)
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2013-2015 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2013-2021 Carl Hetherington <cth@carlh.net>
 
     This file is part of DCP-o-matic.
 
 
 */
 
-#include "lib/colour_conversion.h"
-#include "lib/raw_convert.h"
-#include "wx_util.h"
+
+#include "check_box.h"
 #include "colour_conversion_editor.h"
+#include "static_text.h"
+#include "wx_util.h"
+#include "lib/colour_conversion.h"
+#include <dcp/locale_convert.h>
 #include <dcp/gamma_transfer_function.h>
+#include <dcp/identity_transfer_function.h>
+#include <dcp/s_gamut3_transfer_function.h>
 #include <dcp/modified_gamma_transfer_function.h>
 #include <wx/spinctrl.h>
 #include <wx/gbsizer.h>
 #include <iostream>
 
-using std::string;
+
 using std::cout;
-using boost::shared_ptr;
-using boost::dynamic_pointer_cast;
+using std::dynamic_pointer_cast;
+using std::make_shared;
+using std::shared_ptr;
+using std::string;
+using boost::bind;
+using dcp::locale_convert;
+
+
+int const ColourConversionEditor::INPUT_GAMMA = 0;
+int const ColourConversionEditor::INPUT_GAMMA_LINEARISED = 1;
+int const ColourConversionEditor::INPUT_SGAMUT3 = 2;
+
 
 ColourConversionEditor::ColourConversionEditor (wxWindow* parent, bool yuv)
        : wxPanel (parent, wxID_ANY)
        , _ignore_chromaticity_changed (false)
 {
-       wxBoxSizer* overall_sizer = new wxBoxSizer (wxVERTICAL);
+       auto overall_sizer = new wxBoxSizer (wxVERTICAL);
        SetSizer (overall_sizer);
 
-       wxGridBagSizer* table = new wxGridBagSizer (DCPOMATIC_SIZER_Y_GAP - 3, DCPOMATIC_SIZER_X_GAP);
+       auto table = new wxGridBagSizer (DCPOMATIC_SIZER_Y_GAP - 3, DCPOMATIC_SIZER_X_GAP);
        overall_sizer->Add (table, 1, wxEXPAND | wxALL, DCPOMATIC_DIALOG_BORDER);
 
        int r = 0;
 
        subhead (table, this, _("Input gamma correction"), r);
 
-       _input_gamma_linearised = new wxCheckBox (this, wxID_ANY, _("Linearise input gamma curve for small values"));
-       table->Add (_input_gamma_linearised, wxGBPosition (r, 0), wxGBSpan (1, 2));
+       add_label_to_sizer (table, this, _("Input transfer function"), true, wxGBPosition (r, 0));
+       _input = new wxChoice (this, wxID_ANY);
+       _input->Append (_("Simple gamma"));
+       _input->Append (_("Simple gamma, linearised for small values"));
+       _input->Append (_("S-Gamut3"));
+       table->Add (_input, wxGBPosition (r, 1), wxGBSpan (1, 2));
        ++r;
 
        add_label_to_sizer (table, this, _("Input gamma"), true, wxGBPosition (r, 0));
@@ -58,16 +77,16 @@ ColourConversionEditor::ColourConversionEditor (wxWindow* parent, bool yuv)
 
        add_label_to_sizer (table, this, _("Input power"), true, wxGBPosition (r, 0));
        {
-               wxBoxSizer* s = new wxBoxSizer (wxHORIZONTAL);
+               auto s = new wxBoxSizer (wxHORIZONTAL);
                _input_power = new wxSpinCtrlDouble (this);
                s->Add (_input_power, 1, wxEXPAND | wxRIGHT, DCPOMATIC_SIZER_GAP);
-               add_label_to_sizer (s, this, _("threshold"), true);
+               add_label_to_sizer (s, this, _("threshold"), true, 0, wxALIGN_CENTRE_VERTICAL | wxLEFT | wxRIGHT);
                _input_threshold = new wxTextCtrl (this, wxID_ANY, wxT (""));
                s->Add (_input_threshold, 1, wxEXPAND | wxRIGHT, DCPOMATIC_SIZER_GAP);
-               add_label_to_sizer (s, this, _("A"), true);
+               add_label_to_sizer (s, this, _("A"), true, 0, wxALIGN_CENTRE_VERTICAL | wxLEFT | wxRIGHT);
                _input_A = new wxTextCtrl (this, wxID_ANY, wxT (""));
                s->Add (_input_A, 1, wxEXPAND | wxRIGHT, DCPOMATIC_SIZER_GAP);
-               add_label_to_sizer (s, this, _("B"), true);
+               add_label_to_sizer (s, this, _("B"), true, 0, wxALIGN_CENTRE_VERTICAL | wxLEFT | wxRIGHT);
                _input_B = new wxTextCtrl (this, wxID_ANY, wxT (""));
                s->Add (_input_B, 1, wxEXPAND | wxRIGHT, DCPOMATIC_SIZER_GAP);
                table->Add (s, wxGBPosition (r, 1), wxGBSpan (1, 3));
@@ -75,7 +94,7 @@ ColourConversionEditor::ColourConversionEditor (wxWindow* parent, bool yuv)
        ++r;
 
         wxClientDC dc (parent);
-        wxSize size = dc.GetTextExtent (wxT ("-0.12345678901"));
+        auto size = dc.GetTextExtent(wxT("-0.12345678901"));
         size.SetHeight (-1);
 
         wxTextValidator validator (wxFILTER_INCLUDE_CHAR_LIST);
@@ -91,9 +110,9 @@ ColourConversionEditor::ColourConversionEditor (wxWindow* parent, bool yuv)
 
        /* YUV to RGB conversion */
 
-       wxStaticText* yuv_heading = subhead (table, this, _("YUV to RGB conversion"), r);
+       auto yuv_heading = subhead (table, this, _("YUV to RGB conversion"), r);
 
-       wxStaticText* yuv_label = add_label_to_sizer (table, this, _("YUV to RGB matrix"), true, wxGBPosition (r, 0));
+       auto yuv_label = add_label_to_sizer (table, this, _("YUV to RGB matrix"), true, wxGBPosition (r, 0));
        _yuv_to_rgb = new wxChoice (this, wxID_ANY);
        _yuv_to_rgb->Append (_("Rec. 601"));
        _yuv_to_rgb->Append (_("Rec. 709"));
@@ -146,10 +165,10 @@ ColourConversionEditor::ColourConversionEditor (wxWindow* parent, bool yuv)
         size = dc.GetTextExtent (wxT ("0.12345678"));
         size.SetHeight (-1);
 
-       wxFlexGridSizer* rgb_to_xyz_sizer = new wxFlexGridSizer (3, DCPOMATIC_SIZER_X_GAP, DCPOMATIC_SIZER_Y_GAP);
+       auto rgb_to_xyz_sizer = new wxFlexGridSizer (3, DCPOMATIC_SIZER_X_GAP, DCPOMATIC_SIZER_Y_GAP);
        for (int i = 0; i < 3; ++i) {
                for (int j = 0; j < 3; ++j) {
-                       _rgb_to_xyz[i][j] = new wxStaticText (this, wxID_ANY, wxT (""), wxDefaultPosition, size, 0);
+                       _rgb_to_xyz[i][j] = new StaticText (this, wxT (""), wxDefaultPosition, size, 0);
                        rgb_to_xyz_sizer->Add (_rgb_to_xyz[i][j]);
                }
        }
@@ -162,8 +181,8 @@ ColourConversionEditor::ColourConversionEditor (wxWindow* parent, bool yuv)
 
        subhead (table, this, _("White point adjustment"), r);
 
-       _adjust_white = new wxCheckBox (this, wxID_ANY, _("Adjust white point to"));
-       table->Add (_adjust_white, wxGBPosition (r, 0));
+       _adjust_white = new CheckBox (this, _("Adjust white point to"));
+       table->Add (_adjust_white, wxGBPosition (r, 0), wxDefaultSpan, wxALIGN_CENTER_VERTICAL);
        _adjusted_white_x = new wxTextCtrl (this, wxID_ANY, wxT (""), wxDefaultPosition, size, 0, validator);
        table->Add (_adjusted_white_x, wxGBPosition (r, 1));
        _adjusted_white_y = new wxTextCtrl (this, wxID_ANY, wxT (""), wxDefaultPosition, size, 0, validator);
@@ -176,14 +195,22 @@ ColourConversionEditor::ColourConversionEditor (wxWindow* parent, bool yuv)
         size = dc.GetTextExtent (wxT ("0.12345678"));
         size.SetHeight (-1);
 
-       wxFlexGridSizer* bradford_sizer = new wxFlexGridSizer (3, DCPOMATIC_SIZER_X_GAP, DCPOMATIC_SIZER_Y_GAP);
+       auto bradford_sizer = new wxFlexGridSizer (3, DCPOMATIC_SIZER_X_GAP, DCPOMATIC_SIZER_Y_GAP);
        for (int i = 0; i < 3; ++i) {
                for (int j = 0; j < 3; ++j) {
-                       _bradford[i][j] = new wxStaticText (this, wxID_ANY, wxT (""), wxDefaultPosition, size, 0);
+                       _bradford[i][j] = new StaticText (this, wxT (""), wxDefaultPosition, size, 0);
                        bradford_sizer->Add (_bradford[i][j]);
                }
        }
        table->Add (bradford_sizer, wxGBPosition (r - 2, 3), wxGBSpan (2, 1));
+       ++r;
+
+       /* Output transfer function */
+
+       subhead (table, this, _("Output gamma correction"), r);
+
+       _output = new CheckBox (this, _("Inverse 2.6 gamma correction on output"));
+       table->Add (_output, wxGBPosition (r, 0), wxGBSpan (1, 2));
 
        _input_gamma->SetRange (0.1, 4.0);
        _input_gamma->SetDigits (2);
@@ -192,30 +219,32 @@ ColourConversionEditor::ColourConversionEditor (wxWindow* parent, bool yuv)
        _input_power->SetDigits (6);
        _input_power->SetIncrement (0.1);
 
-       _input_gamma->Bind (wxEVT_COMMAND_SPINCTRLDOUBLE_UPDATED, boost::bind (&ColourConversionEditor::changed, this, _input_gamma));
-       _input_gamma_linearised->Bind (wxEVT_COMMAND_CHECKBOX_CLICKED, boost::bind (&ColourConversionEditor::changed, this));
-       _input_power->Bind (wxEVT_COMMAND_TEXT_UPDATED, boost::bind (&ColourConversionEditor::changed, this));
-       _input_threshold->Bind (wxEVT_COMMAND_TEXT_UPDATED, boost::bind (&ColourConversionEditor::changed, this));
-       _input_A->Bind (wxEVT_COMMAND_TEXT_UPDATED, boost::bind (&ColourConversionEditor::changed, this));
-       _input_B->Bind (wxEVT_COMMAND_TEXT_UPDATED, boost::bind (&ColourConversionEditor::changed, this));
-       _red_x->Bind (wxEVT_COMMAND_TEXT_UPDATED, boost::bind (&ColourConversionEditor::chromaticity_changed, this));
-       _red_y->Bind (wxEVT_COMMAND_TEXT_UPDATED, boost::bind (&ColourConversionEditor::chromaticity_changed, this));
-       _green_x->Bind (wxEVT_COMMAND_TEXT_UPDATED, boost::bind (&ColourConversionEditor::chromaticity_changed, this));
-       _green_y->Bind (wxEVT_COMMAND_TEXT_UPDATED, boost::bind (&ColourConversionEditor::chromaticity_changed, this));
-       _blue_x->Bind (wxEVT_COMMAND_TEXT_UPDATED, boost::bind (&ColourConversionEditor::chromaticity_changed, this));
-       _blue_y->Bind (wxEVT_COMMAND_TEXT_UPDATED, boost::bind (&ColourConversionEditor::chromaticity_changed, this));
-       _white_x->Bind (wxEVT_COMMAND_TEXT_UPDATED, boost::bind (&ColourConversionEditor::chromaticity_changed, this));
-       _white_y->Bind (wxEVT_COMMAND_TEXT_UPDATED, boost::bind (&ColourConversionEditor::chromaticity_changed, this));
-       _adjust_white->Bind (wxEVT_COMMAND_CHECKBOX_CLICKED, boost::bind (&ColourConversionEditor::adjusted_white_changed, this));
-       _adjusted_white_x->Bind (wxEVT_COMMAND_TEXT_UPDATED, boost::bind (&ColourConversionEditor::adjusted_white_changed, this));
-       _adjusted_white_y->Bind (wxEVT_COMMAND_TEXT_UPDATED, boost::bind (&ColourConversionEditor::adjusted_white_changed, this));
-       _yuv_to_rgb->Bind (wxEVT_COMMAND_CHOICE_SELECTED, boost::bind (&ColourConversionEditor::changed, this));
+       _input->Bind (wxEVT_CHOICE, bind (&ColourConversionEditor::changed, this));
+       _input_gamma->Bind (wxEVT_SPINCTRLDOUBLE, bind (&ColourConversionEditor::changed, this, _input_gamma));
+       _input_power->Bind (wxEVT_TEXT, bind (&ColourConversionEditor::changed, this));
+       _input_threshold->Bind (wxEVT_TEXT, bind (&ColourConversionEditor::changed, this));
+       _input_A->Bind (wxEVT_TEXT, bind (&ColourConversionEditor::changed, this));
+       _input_B->Bind (wxEVT_TEXT, bind (&ColourConversionEditor::changed, this));
+       _red_x->Bind (wxEVT_TEXT, bind (&ColourConversionEditor::chromaticity_changed, this));
+       _red_y->Bind (wxEVT_TEXT, bind (&ColourConversionEditor::chromaticity_changed, this));
+       _green_x->Bind (wxEVT_TEXT, bind (&ColourConversionEditor::chromaticity_changed, this));
+       _green_y->Bind (wxEVT_TEXT, bind (&ColourConversionEditor::chromaticity_changed, this));
+       _blue_x->Bind (wxEVT_TEXT, bind (&ColourConversionEditor::chromaticity_changed, this));
+       _blue_y->Bind (wxEVT_TEXT, bind (&ColourConversionEditor::chromaticity_changed, this));
+       _white_x->Bind (wxEVT_TEXT, bind (&ColourConversionEditor::chromaticity_changed, this));
+       _white_y->Bind (wxEVT_TEXT, bind (&ColourConversionEditor::chromaticity_changed, this));
+       _adjust_white->Bind (wxEVT_CHECKBOX, bind (&ColourConversionEditor::adjusted_white_changed, this));
+       _adjusted_white_x->Bind (wxEVT_TEXT, bind (&ColourConversionEditor::adjusted_white_changed, this));
+       _adjusted_white_y->Bind (wxEVT_TEXT, bind (&ColourConversionEditor::adjusted_white_changed, this));
+       _yuv_to_rgb->Bind (wxEVT_CHOICE, bind (&ColourConversionEditor::changed, this));
+       _output->Bind (wxEVT_CHECKBOX, bind (&ColourConversionEditor::changed, this));
 }
 
+
 wxStaticText *
 ColourConversionEditor::subhead (wxGridBagSizer* sizer, wxWindow* parent, wxString text, int& row) const
 {
-       wxStaticText* m = new wxStaticText (parent, wxID_ANY, text);
+       auto m = new StaticText (parent, text);
        wxFont font (*wxNORMAL_FONT);
        font.SetWeight (wxFONTWEIGHT_BOLD);
        m->SetFont (font);
@@ -224,25 +253,28 @@ ColourConversionEditor::subhead (wxGridBagSizer* sizer, wxWindow* parent, wxStri
        return m;
 }
 
+
 void
 ColourConversionEditor::set (ColourConversion conversion)
 {
-       if (dynamic_pointer_cast<const dcp::GammaTransferFunction> (conversion.in ())) {
-               shared_ptr<const dcp::GammaTransferFunction> tf = dynamic_pointer_cast<const dcp::GammaTransferFunction> (conversion.in ());
-               _input_gamma_linearised->SetValue (false);
+       if (dynamic_pointer_cast<const dcp::GammaTransferFunction>(conversion.in())) {
+               auto tf = dynamic_pointer_cast<const dcp::GammaTransferFunction>(conversion.in());
+               checked_set (_input, 0);
                set_spin_ctrl (_input_gamma, tf->gamma ());
        } else if (dynamic_pointer_cast<const dcp::ModifiedGammaTransferFunction> (conversion.in ())) {
-               shared_ptr<const dcp::ModifiedGammaTransferFunction> tf = dynamic_pointer_cast<const dcp::ModifiedGammaTransferFunction> (conversion.in ());
+               auto tf = dynamic_pointer_cast<const dcp::ModifiedGammaTransferFunction>(conversion.in());
+               checked_set (_input, 1);
                /* Arbitrary default; not used in this case (greyed out) */
                _input_gamma->SetValue (2.2);
-               _input_gamma_linearised->SetValue (true);
                set_spin_ctrl (_input_power, tf->power ());
                set_text_ctrl (_input_threshold, tf->threshold ());
                set_text_ctrl (_input_A, tf->A ());
                set_text_ctrl (_input_B, tf->B ());
+       } else if (dynamic_pointer_cast<const dcp::SGamut3TransferFunction>(conversion.in())) {
+               checked_set (_input, 2);
        }
 
-       _yuv_to_rgb->SetSelection (conversion.yuv_to_rgb ());
+       _yuv_to_rgb->SetSelection (static_cast<int>(conversion.yuv_to_rgb()));
 
        _ignore_chromaticity_changed = true;
 
@@ -276,77 +308,92 @@ ColourConversionEditor::set (ColourConversion conversion)
                _adjust_white->SetValue (false);
        }
 
+       _output->SetValue (static_cast<bool>(dynamic_pointer_cast<const dcp::GammaTransferFunction>(conversion.out())));
+
        update_rgb_to_xyz ();
        update_bradford ();
        changed ();
 }
 
+
 ColourConversion
 ColourConversionEditor::get () const
 {
        ColourConversion conversion;
 
-       if (_input_gamma_linearised->GetValue ()) {
+       switch (_input->GetSelection ()) {
+       case INPUT_GAMMA:
                conversion.set_in (
-                       shared_ptr<dcp::ModifiedGammaTransferFunction> (
-                               new dcp::ModifiedGammaTransferFunction (
-                                       _input_power->GetValue (),
-                                       raw_convert<double> (wx_to_std (_input_threshold->GetValue ())),
-                                       raw_convert<double> (wx_to_std (_input_A->GetValue ())),
-                                       raw_convert<double> (wx_to_std (_input_B->GetValue ()))
-                                       )
-                               )
+                       make_shared<dcp::GammaTransferFunction>(_input_gamma->GetValue())
                        );
-       } else {
+               break;
+       case INPUT_GAMMA_LINEARISED:
+               /* Linearised gamma */
                conversion.set_in (
-                       shared_ptr<dcp::GammaTransferFunction> (new dcp::GammaTransferFunction (_input_gamma->GetValue ()))
+                       make_shared<dcp::ModifiedGammaTransferFunction>(
+                               _input_power->GetValue (),
+                               locale_convert<double>(wx_to_std(_input_threshold->GetValue())),
+                               locale_convert<double>(wx_to_std(_input_A->GetValue())),
+                               locale_convert<double>(wx_to_std(_input_B->GetValue()))
+                               )
                        );
+               break;
+       case INPUT_SGAMUT3:
+               /* SGamut3 */
+               conversion.set_in (make_shared<dcp::SGamut3TransferFunction>());
+               break;
        }
 
-       conversion.set_yuv_to_rgb (static_cast<dcp::YUVToRGB> (_yuv_to_rgb->GetSelection ()));
+       conversion.set_yuv_to_rgb (static_cast<dcp::YUVToRGB>(_yuv_to_rgb->GetSelection()));
 
        conversion.set_red (
-               dcp::Chromaticity (raw_convert<double> (wx_to_std (_red_x->GetValue ())), raw_convert<double> (wx_to_std (_red_y->GetValue ())))
+               dcp::Chromaticity(locale_convert<double>(wx_to_std(_red_x->GetValue())), locale_convert<double>(wx_to_std(_red_y->GetValue())))
                );
        conversion.set_green (
-               dcp::Chromaticity (raw_convert<double> (wx_to_std (_green_x->GetValue ())), raw_convert<double> (wx_to_std (_green_y->GetValue ())))
+               dcp::Chromaticity(locale_convert<double>(wx_to_std(_green_x->GetValue())), locale_convert<double>(wx_to_std(_green_y->GetValue())))
                );
        conversion.set_blue (
-               dcp::Chromaticity (raw_convert<double> (wx_to_std (_blue_x->GetValue ())), raw_convert<double> (wx_to_std (_blue_y->GetValue ())))
+               dcp::Chromaticity(locale_convert<double>(wx_to_std(_blue_x->GetValue())), locale_convert<double>(wx_to_std(_blue_y->GetValue())))
                );
        conversion.set_white (
-               dcp::Chromaticity (raw_convert<double> (wx_to_std (_white_x->GetValue ())), raw_convert<double> (wx_to_std (_white_y->GetValue ())))
+               dcp::Chromaticity(locale_convert<double>(wx_to_std(_white_x->GetValue())), locale_convert<double>(wx_to_std(_white_y->GetValue())))
                );
 
-       if (_adjust_white->GetValue ()) {
-               conversion.set_adjusted_white (
-                       dcp::Chromaticity (
-                               raw_convert<double> (wx_to_std (_adjusted_white_x->GetValue ())),
-                               raw_convert<double> (wx_to_std (_adjusted_white_y->GetValue ()))
+       if (_adjust_white->GetValue()) {
+               conversion.set_adjusted_white(
+                       dcp::Chromaticity(
+                               locale_convert<double>(wx_to_std(_adjusted_white_x->GetValue())),
+                               locale_convert<double>(wx_to_std(_adjusted_white_y->GetValue()))
                                )
                        );
        } else {
                conversion.unset_adjusted_white ();
        }
 
-       conversion.set_out (shared_ptr<dcp::GammaTransferFunction> (new dcp::GammaTransferFunction (2.6)));
+       if (_output->GetValue ()) {
+               conversion.set_out (make_shared<dcp::GammaTransferFunction>(2.6));
+       } else {
+               conversion.set_out (make_shared<dcp::IdentityTransferFunction>());
+       }
 
        return conversion;
 }
 
+
 void
 ColourConversionEditor::changed ()
 {
-       bool const lin = _input_gamma_linearised->GetValue ();
-       _input_gamma->Enable (!lin);
-       _input_power->Enable (lin);
-       _input_threshold->Enable (lin);
-       _input_A->Enable (lin);
-       _input_B->Enable (lin);
+       int const in = _input->GetSelection();
+       _input_gamma->Enable (in == INPUT_GAMMA);
+       _input_power->Enable (in == INPUT_GAMMA_LINEARISED);
+       _input_threshold->Enable (in == INPUT_GAMMA_LINEARISED);
+       _input_A->Enable (in == INPUT_GAMMA_LINEARISED);
+       _input_B->Enable (in == INPUT_GAMMA_LINEARISED);
 
        Changed ();
 }
 
+
 void
 ColourConversionEditor::chromaticity_changed ()
 {
@@ -358,6 +405,7 @@ ColourConversionEditor::chromaticity_changed ()
        changed ();
 }
 
+
 void
 ColourConversionEditor::adjusted_white_changed ()
 {
@@ -365,13 +413,14 @@ ColourConversionEditor::adjusted_white_changed ()
        changed ();
 }
 
+
 void
 ColourConversionEditor::update_bradford ()
 {
        _adjusted_white_x->Enable (_adjust_white->GetValue ());
        _adjusted_white_y->Enable (_adjust_white->GetValue ());
 
-       boost::numeric::ublas::matrix<double> m = get().bradford ();
+       auto m = get().bradford();
        for (int i = 0; i < 3; ++i) {
                for (int j = 0; j < 3; ++j) {
                        char buffer[256];
@@ -381,10 +430,11 @@ ColourConversionEditor::update_bradford ()
        }
 }
 
+
 void
 ColourConversionEditor::update_rgb_to_xyz ()
 {
-       boost::numeric::ublas::matrix<double> m = get().rgb_to_xyz ();
+       auto m = get().rgb_to_xyz();
        for (int i = 0; i < 3; ++i) {
                for (int j = 0; j < 3; ++j) {
                        char buffer[256];
@@ -394,6 +444,7 @@ ColourConversionEditor::update_rgb_to_xyz ()
        }
 }
 
+
 void
 ColourConversionEditor::changed (wxSpinCtrlDouble* sc)
 {
@@ -401,13 +452,14 @@ ColourConversionEditor::changed (wxSpinCtrlDouble* sc)
           it emits an erroneous changed signal, which messes things up.
           Check for that here.
        */
-       if (fabs (_last_spin_ctrl_value[sc] - sc->GetValue()) < 1e-3) {
+       if (fabs(_last_spin_ctrl_value[sc] - sc->GetValue()) < 1e-3) {
                return;
        }
 
        Changed ();
 }
 
+
 void
 ColourConversionEditor::set_spin_ctrl (wxSpinCtrlDouble* control, double value)
 {
@@ -415,6 +467,7 @@ ColourConversionEditor::set_spin_ctrl (wxSpinCtrlDouble* control, double value)
        control->SetValue (value);
 }
 
+
 void
 ColourConversionEditor::set_text_ctrl (wxTextCtrl* control, double value)
 {