EqualizationPanel is used with EqualizationDialog and controls a graph for EffectEqualization. We should look at amalgamating the various graphing code, such as provided by FrequencyPlotDialog and FilterPanel. More...

#include <EqualizationPanel.h>

Inheritance diagram for EqualizationPanel:

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Collaboration diagram for EqualizationPanel:

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Public Member Functions
	EqualizationPanel (wxWindow *parent, wxWindowID winid, EqualizationCurvesList &curvesList, RulerPanel &freqRuler, RulerPanel &dbRuler)

	~EqualizationPanel ()

bool	AcceptsFocus () const

bool	AcceptsFocusFromKeyboard () const

void	Recalc ()

Public Member Functions inherited from wxPanelWrapper
	wxPanelWrapper ()

	wxPanelWrapper (wxWindow *parent, wxWindowID winid=wxID_ANY, const wxPoint &pos=wxDefaultPosition, const wxSize &size=wxDefaultSize, long style=wxTAB_TRAVERSAL\|wxNO_BORDER, const TranslatableString &name=XO("Panel"))

bool	Create (wxWindow *parent, wxWindowID winid=wxID_ANY, const wxPoint &pos=wxDefaultPosition, const wxSize &size=wxDefaultSize, long style=wxTAB_TRAVERSAL\|wxNO_BORDER, const TranslatableString &name=XO("Panel"))

void	SetLabel (const TranslatableString &label)

void	SetName (const TranslatableString &name)

void	SetToolTip (const TranslatableString &toolTip)

void	SetName ()

Public Member Functions inherited from wxTabTraversalWrapper< wxPanel >
	wxTabTraversalWrapper (Args &&... args)

	wxTabTraversalWrapper (const wxTabTraversalWrapper &)=delete

	wxTabTraversalWrapper (wxTabTraversalWrapper &&)=delete

wxTabTraversalWrapper &	operator= (const wxTabTraversalWrapper &)=delete

wxTabTraversalWrapper &	operator= (wxTabTraversalWrapper &&)=delete

Private Member Functions
void	OnIdle (wxIdleEvent &event)

void	OnMouseEvent (wxMouseEvent &event)

void	OnCaptureLost (wxMouseCaptureLostEvent &event)

void	OnPaint (wxPaintEvent &event)

void	OnSize (wxSizeEvent &event)

Private Attributes
wxWindow *	mParent

EqualizationCurvesList &	mCurvesList

RulerPanel &	mFreqRuler

RulerPanel &	mdBRuler

std::unique_ptr< EnvelopeEditor >	mLinEditor

std::unique_ptr< EnvelopeEditor >	mLogEditor

std::unique_ptr< wxBitmap >	mBitmap

wxRect	mEnvRect

int	mWidth

int	mHeight

Floats	mOutr

Detailed Description

EqualizationPanel is used with EqualizationDialog and controls a graph for EffectEqualization. We should look at amalgamating the various graphing code, such as provided by FrequencyPlotDialog and FilterPanel.

Definition at line 26 of file EqualizationPanel.h.

Constructor & Destructor Documentation

◆ EqualizationPanel()

EqualizationPanel::EqualizationPanel	(	wxWindow *	parent,
		wxWindowID	winid,
		EqualizationCurvesList &	curvesList,
		RulerPanel &	freqRuler,
		RulerPanel &	dbRuler
	)

Definition at line 50 of file EqualizationPanel.cpp.

   : wxPanelWrapper(parent, winid)
   , mCurvesList{ curvesList }
   , mFreqRuler{ freqRuler }
   , mdBRuler{ dbRuler }
{
   auto &parameters = mCurvesList.mParameters;
   mParent = parent;
 
   mBitmap = NULL;
   mWidth = 0;
   mHeight = 0;
 
   mLinEditor = std::make_unique<EnvelopeEditor>(
      parameters.mLinEnvelope, false);
   mLogEditor = std::make_unique<EnvelopeEditor>(
      parameters.mLogEnvelope, false);
 
   // Initial Recalc() needed to populate mOutr before the first paint event
   Recalc();
}

◆ ~EqualizationPanel()

EqualizationPanel::~EqualizationPanel ( )

Definition at line 74 of file EqualizationPanel.cpp.

{
   if(HasCapture())
      ReleaseMouse();
}

Member Function Documentation

◆ AcceptsFocus()

bool EqualizationPanel::AcceptsFocus ( ) const

inline

Definition at line 36 of file EqualizationPanel.h.

36{ return false; }

◆ AcceptsFocusFromKeyboard()

bool EqualizationPanel::AcceptsFocusFromKeyboard ( ) const

inline

Definition at line 38 of file EqualizationPanel.h.

38{ return false; }

◆ OnCaptureLost()

void EqualizationPanel::OnCaptureLost ( wxMouseCaptureLostEvent & event )

private

Definition at line 323 of file EqualizationPanel.cpp.

{
   if (HasCapture())
   {
      ReleaseMouse();
   }
}

◆ OnIdle()

void EqualizationPanel::OnIdle ( wxIdleEvent & event )

private

Definition at line 331 of file EqualizationPanel.cpp.

{
   if (mCurvesList.mRecalcRequired) {
      Recalc();
      Refresh(false);
      mCurvesList.mRecalcRequired = false;
   }
}

References mCurvesList, EqualizationCurvesList::mRecalcRequired, and Recalc().

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◆ OnMouseEvent()

void EqualizationPanel::OnMouseEvent ( wxMouseEvent & event )

private

Definition at line 291 of file EqualizationPanel.cpp.

{
   const auto &parameters = mCurvesList.mParameters;
   const auto &dBMax = parameters.mdBMax;
   const auto &dBMin = parameters.mdBMin;
   const auto &drawMode = parameters.mDrawMode;
   const auto &lin = parameters.mLin;
 
   if (!drawMode)
   {
      return;
   }
 
   if (event.ButtonDown() && !HasCapture())
   {
      CaptureMouse();
   }
 
   auto &pEditor = (lin ? mLinEditor : mLogEditor);
   if (pEditor->MouseEvent(event, mEnvRect, ZoomInfo(0.0, mEnvRect.width),
      false, 0.0,
      dBMin, dBMax)
   )
      mCurvesList.ForceRecalc();
 
   if (event.ButtonUp() && HasCapture())
   {
      mCurvesList.EnvelopeUpdated();
      ReleaseMouse();
   }
}

References EqualizationCurvesList::EnvelopeUpdated(), EqualizationCurvesList::ForceRecalc(), mCurvesList, EqualizationParameters::mdBMax, mEnvRect, mLinEditor, mLogEditor, and EqualizationCurvesList::mParameters.

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◆ OnPaint()

void EqualizationPanel::OnPaint ( wxPaintEvent & event )

private

Definition at line 99 of file EqualizationPanel.cpp.

{
   const auto &parameters = mCurvesList.mParameters;
   const auto &dBMax = parameters.mdBMax;
   const auto &dBMin = parameters.mdBMin;
   const auto &M = parameters.mM;
   const auto &drawMode = parameters.mDrawMode;
   const auto &drawGrid = parameters.mDrawGrid;
   const auto &loFreq = parameters.mLoFreq;
   const auto &hiFreq = parameters.mHiFreq;
   const auto &windowSize = parameters.mWindowSize;
   const auto &filterFuncR = parameters.mFilterFuncR;
   const auto &filterFuncI = parameters.mFilterFuncI;
 
   wxPaintDC dc(this);
   int width, height;
   GetSize(&width, &height);
 
   if (!mBitmap || mWidth!=width || mHeight!=height)
   {
      mWidth = width;
      mHeight = height;
      mBitmap = std::make_unique<wxBitmap>(mWidth, mHeight,24);
   }
 
   wxBrush bkgndBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
 
   wxMemoryDC memDC;
   memDC.SelectObject(*mBitmap);
 
   wxRect bkgndRect;
   bkgndRect.x = 0;
   bkgndRect.y = 0;
   bkgndRect.width = mWidth;
   bkgndRect.height = mHeight;
   memDC.SetBrush(bkgndBrush);
   memDC.SetPen(*wxTRANSPARENT_PEN);
   memDC.DrawRectangle(bkgndRect);
 
   bkgndRect.y = mHeight;
   memDC.DrawRectangle(bkgndRect);
 
   wxRect border;
   border.x = 0;
   border.y = 0;
   border.width = mWidth;
   border.height = mHeight;
 
   memDC.SetBrush(*wxWHITE_BRUSH);
   memDC.SetPen(*wxBLACK_PEN);
   memDC.DrawRectangle(border);
 
   mEnvRect = border;
   mEnvRect.Deflate(PANELBORDER, PANELBORDER);
 
   // Pure blue x-axis line
   memDC.SetPen(wxPen(theTheme.Colour( clrGraphLines ), 1, wxPENSTYLE_SOLID));
   int center = (int) (mEnvRect.height * dBMax/(dBMax - dBMin) + .5);
   AColor::Line(memDC,
      mEnvRect.GetLeft(), mEnvRect.y + center,
      mEnvRect.GetRight(), mEnvRect.y + center);
 
   // Draw the grid, if asked for.  Do it now so it's underneath the main plots.
   if( drawGrid )
   {
      mFreqRuler.ruler.DrawGrid(memDC, mEnvRect.height, true, true, PANELBORDER, PANELBORDER);
      mdBRuler.ruler.DrawGrid(memDC, mEnvRect.width, true, true, PANELBORDER, PANELBORDER);
   }
 
   // Med-blue envelope line
   memDC.SetPen(wxPen(theTheme.Colour(clrGraphLines), 3, wxPENSTYLE_SOLID));
 
   // Draw envelope
   int x, y, xlast = 0, ylast = 0;
   {
      Doubles values{ size_t(mEnvRect.width) };
      parameters.ChooseEnvelopeToPaint()
         .GetValues(values.get(), mEnvRect.width, 0.0, 1.0 / mEnvRect.width);
      bool off = false, off1 = false;
      for (int i = 0; i < mEnvRect.width; i++)
      {
         x = mEnvRect.x + i;
         y = lrint(mEnvRect.height*((dBMax - values[i]) / (dBMax - dBMin)) + .25); //needs more optimising, along with'what you get'?
         if (y >= mEnvRect.height)
         {
            y = mEnvRect.height - 1;
            off = true;
         }
         else
         {
            off = false;
            off1 = false;
         }
         if ((i != 0) & (!off1))
         {
            AColor::Line(memDC, xlast, ylast,
               x, mEnvRect.y + y);
         }
         off1 = off;
         xlast = x;
         ylast = mEnvRect.y + y;
      }
   }
 
   //Now draw the actual response that you will get.
   //mFilterFunc has a linear scale, window has a log one so we have to fiddle about
   memDC.SetPen(wxPen(theTheme.Colour( clrResponseLines ), 1, wxPENSTYLE_SOLID));
   double scale = (double)mEnvRect.height/(dBMax - dBMin);   //pixels per dB
   double yF;   //gain at this freq
   double delta = hiFreq / (((double)windowSize / 2.));   //size of each freq bin
 
   bool lin = parameters.IsLinear();   // log or lin scale?
 
   double loLog = log10(loFreq);
   double step = lin ? hiFreq : (log10(hiFreq) - loLog);
   step /= ((double)mEnvRect.width-1.);
   double freq;   //actual freq corresponding to x position
   int halfM = (M - 1) / 2;
   int n;   //index to mFreqFunc
   for(int i=0; i<mEnvRect.width; i++)
   {
      x = mEnvRect.x + i;
      freq = lin ? step*i : pow(10., loLog + i*step);   //Hz
      if( ( lin ? step : (pow(10., loLog + (i+1)*step)-freq) ) < delta)
      {   //not enough resolution in FFT
         // set up for calculating cos using recurrence - faster than calculating it directly each time
         double theta = M_PI*freq/hiFreq;   //radians, normalized
         double wtemp = sin(0.5 * theta);
         double wpr = -2.0 * wtemp * wtemp;
         double wpi = -1.0 * sin(theta);
         double wr = cos(theta*halfM);
         double wi = sin(theta*halfM);
 
         yF = 0.;
         for(int j=0;j<halfM;j++)
         {
            yF += 2. * mOutr[j] * wr;  // This works for me, compared to the previous version.  Compare wr to cos(theta*(halfM-j)).  Works for me.  Keep everything as doubles though.
            // do recurrence
            wr = (wtemp = wr) * wpr - wi * wpi + wr;
            wi = wi * wpr + wtemp * wpi + wi;
         }
         yF += mOutr[halfM];
         yF = fabs(yF);
         if(yF!=0.)
            yF = LINEAR_TO_DB(yF);
         else
            yF = dBMin;
      }
      else
      {   //use FFT, it has enough resolution
         n = (int)(freq/delta + .5);
         if(pow(filterFuncR[n],2)+pow(filterFuncI[n],2)!=0.)
            yF = 10.0*log10(pow(filterFuncR[n],2)+pow(filterFuncI[n],2));   //10 here, a power
         else
            yF = dBMin;
      }
      if(yF < dBMin)
         yF = dBMin;
      yF = center-scale*yF;
      if(yF>mEnvRect.height)
         yF = mEnvRect.height - 1;
      if(yF<0.)
         yF=0.;
      y = (int)(yF+.5);
 
      if (i != 0)
      {
         AColor::Line(memDC, xlast, ylast, x, mEnvRect.y + y);
      }
      xlast = x;
      ylast = mEnvRect.y + y;
   }
 
   memDC.SetPen(*wxBLACK_PEN);
   if( drawMode )
   {
      ZoomInfo zoomInfo( 0.0, mEnvRect.width-1 );
 
      // Back pointer to TrackPanel won't be needed in the one drawing
      // function we use here
      TrackArtist artist( nullptr );
 
      artist.pZoomInfo = &zoomInfo;
      TrackPanelDrawingContext context{ memDC, {}, {}, &artist  };
      EnvelopeEditor::DrawPoints( parameters.ChooseEnvelopeToPaint(),
         context, mEnvRect, false, 0.0,
      dBMin, dBMax, false);
   }
 
   dc.Blit(0, 0, mWidth, mHeight, &memDC, 0, 0, wxCOPY, FALSE);
}

References ThemeBase::Colour(), Ruler::DrawGrid(), EnvelopeEditor::DrawPoints(), AColor::Line(), LINEAR_TO_DB, lrint, M_PI, mBitmap, mCurvesList, EqualizationParameters::mdBMax, mdBRuler, mEnvRect, mFreqRuler, mHeight, mOutr, EqualizationCurvesList::mParameters, mWidth, PANELBORDER, TrackArtist::pZoomInfo, RulerPanel::ruler, theTheme, and values.

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◆ OnSize()

void EqualizationPanel::OnSize ( wxSizeEvent & event )

private

Definition at line 93 of file EqualizationPanel.cpp.

{
   Refresh( false );
}

◆ Recalc()

void EqualizationPanel::Recalc ( )

Definition at line 80 of file EqualizationPanel.cpp.

{
   auto &parameters = mCurvesList.mParameters;
   const auto &windowSize = parameters.mWindowSize;
 
   mOutr = Floats{ windowSize };
 
   parameters.CalcFilter();   //to calculate the actual response
   InverseRealFFT(windowSize,
      parameters.mFilterFuncR.get(),
      parameters.mFilterFuncI.get(), mOutr.get());
}

References InverseRealFFT(), mCurvesList, mOutr, EqualizationCurvesList::mParameters, and EqualizationFilter::mWindowSize.

Referenced by OnIdle().

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Member Data Documentation

◆ mBitmap

std::unique_ptr<wxBitmap> EqualizationPanel::mBitmap

private

Definition at line 62 of file EqualizationPanel.h.

Referenced by OnPaint().

◆ mCurvesList

EqualizationCurvesList& EqualizationPanel::mCurvesList

private

Definition at line 57 of file EqualizationPanel.h.

Referenced by OnIdle(), OnMouseEvent(), OnPaint(), and Recalc().

◆ mdBRuler

RulerPanel& EqualizationPanel::mdBRuler

private

Definition at line 59 of file EqualizationPanel.h.

Referenced by OnPaint().

◆ mEnvRect

wxRect EqualizationPanel::mEnvRect

private

Definition at line 63 of file EqualizationPanel.h.

Referenced by OnMouseEvent(), and OnPaint().

◆ mFreqRuler

RulerPanel& EqualizationPanel::mFreqRuler

private

Definition at line 58 of file EqualizationPanel.h.

Referenced by OnPaint().

◆ mHeight

int EqualizationPanel::mHeight

private

Definition at line 65 of file EqualizationPanel.h.

Referenced by OnPaint().

◆ mLinEditor

std::unique_ptr<EnvelopeEditor> EqualizationPanel::mLinEditor

private

Definition at line 60 of file EqualizationPanel.h.

Referenced by OnMouseEvent().

◆ mLogEditor

std::unique_ptr<EnvelopeEditor> EqualizationPanel::mLogEditor

private

Definition at line 60 of file EqualizationPanel.h.

Referenced by OnMouseEvent().

◆ mOutr

Floats EqualizationPanel::mOutr

private

Definition at line 69 of file EqualizationPanel.h.

Referenced by OnPaint(), and Recalc().

◆ mParent

wxWindow* EqualizationPanel::mParent

private

Definition at line 56 of file EqualizationPanel.h.

◆ mWidth

int EqualizationPanel::mWidth

private

Definition at line 64 of file EqualizationPanel.h.

Referenced by OnPaint().

The documentation for this class was generated from the following files:

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ EqualizationPanel()

◆ ~EqualizationPanel()

Member Function Documentation

◆ AcceptsFocus()

◆ AcceptsFocusFromKeyboard()

◆ OnCaptureLost()

◆ OnIdle()

◆ OnMouseEvent()

◆ OnPaint()

◆ OnSize()

◆ Recalc()

Member Data Documentation

◆ mBitmap

◆ mCurvesList

◆ mdBRuler

◆ mEnvRect

◆ mFreqRuler

◆ mHeight

◆ mLinEditor

◆ mLogEditor

◆ mOutr

◆ mParent

◆ mWidth