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 <Equalization.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, EffectEqualization effect)

	~EqualizationPanel ()

bool	AcceptsFocus () const

bool	AcceptsFocusFromKeyboard () const

void	ForceRecalc ()

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	Recalc ()

void	OnMouseEvent (wxMouseEvent &event)

void	OnCaptureLost (wxMouseCaptureLostEvent &event)

void	OnPaint (wxPaintEvent &event)

void	OnSize (wxSizeEvent &event)

Private Attributes
wxWindow *	mParent

EffectEqualization *	mEffect

std::unique_ptr< EnvelopeEditor >	mLinEditor

std::unique_ptr< EnvelopeEditor >	mLogEditor

bool	mRecalcRequired

std::unique_ptr< wxBitmap >	mBitmap

wxRect	mEnvRect

int	mWidth

int	mHeight

Floats	mOutr

Floats	mOuti

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 336 of file Equalization.h.

Constructor & Destructor Documentation

◆ EqualizationPanel()

EqualizationPanel::EqualizationPanel	(	wxWindow *	parent,
		wxWindowID	winid,
		EffectEqualization *	effect
	)

Definition at line 2970 of file Equalization.cpp.

:  wxPanelWrapper(parent, winid)
{
   mParent = parent;
   mEffect = effect;
 
   mBitmap = NULL;
   mWidth = 0;
   mHeight = 0;
 
   mLinEditor = std::make_unique<EnvelopeEditor>(*mEffect->mLinEnvelope, false);
   mLogEditor = std::make_unique<EnvelopeEditor>(*mEffect->mLogEnvelope, false);
   mEffect->mEnvelope->Flatten(0.);
   mEffect->mEnvelope->SetTrackLen(1.0);
 
   ForceRecalc();
}

◆ ~EqualizationPanel()

EqualizationPanel::~EqualizationPanel ( )

Definition at line 2989 of file Equalization.cpp.

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

Member Function Documentation

◆ AcceptsFocus()

bool EqualizationPanel::AcceptsFocus ( ) const

inline

Definition at line 344 of file Equalization.h.

344{ return false; }

◆ AcceptsFocusFromKeyboard()

bool EqualizationPanel::AcceptsFocusFromKeyboard ( ) const

inline

Definition at line 346 of file Equalization.h.

346{ return false; }

◆ ForceRecalc()

void EqualizationPanel::ForceRecalc ( )

Definition at line 2995 of file Equalization.cpp.

{
   mRecalcRequired = true;
   Refresh(false);
}

References mRecalcRequired.

Referenced by EffectEqualization::ForceRecalc(), and OnMouseEvent().

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◆ OnCaptureLost()

void EqualizationPanel::OnCaptureLost ( wxMouseCaptureLostEvent & event )

private

Definition at line 3226 of file Equalization.cpp.

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

◆ OnMouseEvent()

void EqualizationPanel::OnMouseEvent ( wxMouseEvent & event )

private

Definition at line 3199 of file Equalization.cpp.

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

References EffectEqualization::EnvelopeUpdated(), ForceRecalc(), EffectEqualization::mdBMax, EffectEqualization::mdBMin, EffectEqualization::mDrawMode, mEffect, mEnvRect, EffectEqualization::mLin, mLinEditor, and mLogEditor.

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◆ OnPaint()

void EqualizationPanel::OnPaint ( wxPaintEvent & event )

private

Definition at line 3016 of file Equalization.cpp.

{
   wxPaintDC dc(this);
   if(mRecalcRequired) {
      Recalc();
      mRecalcRequired = false;
   }
   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 * mEffect->mdBMax/(mEffect->mdBMax-mEffect->mdBMin) + .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( mEffect->mDrawGrid )
   {
      mEffect->mFreqRuler->ruler.DrawGrid(memDC, mEnvRect.height, true, true, PANELBORDER, PANELBORDER);
      mEffect->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) };
      mEffect->mEnvelope->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*((mEffect->mdBMax - values[i]) / (mEffect->mdBMax - mEffect->mdBMin)) + .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/(mEffect->mdBMax-mEffect->mdBMin);   //pixels per dB
   double yF;   //gain at this freq
   double delta = mEffect->mHiFreq / (((double)mEffect->mWindowSize / 2.));   //size of each freq bin
 
   bool lin = mEffect->IsLinear();   // log or lin scale?
 
   double loLog = log10(mEffect->mLoFreq);
   double step = lin ? mEffect->mHiFreq : (log10(mEffect->mHiFreq) - loLog);
   step /= ((double)mEnvRect.width-1.);
   double freq;   //actual freq corresponding to x position
   int halfM = (mEffect->mM - 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/mEffect->mHiFreq;   //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 = mEffect->mdBMin;
      }
      else
      {   //use FFT, it has enough resolution
         n = (int)(freq/delta + .5);
         if(pow(mEffect->mFilterFuncR[n],2)+pow(mEffect->mFilterFuncI[n],2)!=0.)
            yF = 10.0*log10(pow(mEffect->mFilterFuncR[n],2)+pow(mEffect->mFilterFuncI[n],2));   //10 here, a power
         else
            yF = mEffect->mdBMin;
      }
      if(yF < mEffect->mdBMin)
         yF = mEffect->mdBMin;
      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( mEffect->mDrawMode )
   {
      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( *mEffect->mEnvelope,
         context, mEnvRect, false, 0.0,
      mEffect->mdBMin, mEffect->mdBMax, false);
   }
 
   dc.Blit(0, 0, mWidth, mHeight, &memDC, 0, 0, wxCOPY, FALSE);
}

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◆ OnSize()

void EqualizationPanel::OnSize ( wxSizeEvent & event )

private

Definition at line 3010 of file Equalization.cpp.

{
   Refresh( false );
}

◆ Recalc()

void EqualizationPanel::Recalc ( )

private

Definition at line 3001 of file Equalization.cpp.

{
   mOutr = Floats{ mEffect->mWindowSize };
   mOuti = Floats{ mEffect->mWindowSize };
 
   mEffect->CalcFilter();   //to calculate the actual response
   InverseRealFFT(mEffect->mWindowSize, mEffect->mFilterFuncR.get(), mEffect->mFilterFuncI.get(), mOutr.get());
}

References EffectEqualization::CalcFilter(), InverseRealFFT(), mEffect, EffectEqualization::mFilterFuncI, EffectEqualization::mFilterFuncR, mOuti, mOutr, and EffectEqualization::mWindowSize.

Referenced by OnPaint().

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Member Data Documentation

◆ mBitmap

std::unique_ptr<wxBitmap> EqualizationPanel::mBitmap

private

Definition at line 371 of file Equalization.h.

Referenced by OnPaint().

◆ mEffect

EffectEqualization* EqualizationPanel::mEffect

private

Definition at line 366 of file Equalization.h.

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

◆ mEnvRect

wxRect EqualizationPanel::mEnvRect

private

Definition at line 372 of file Equalization.h.

Referenced by OnMouseEvent(), and OnPaint().

◆ mHeight

int EqualizationPanel::mHeight

private

Definition at line 374 of file Equalization.h.

Referenced by OnPaint().

◆ mLinEditor

std::unique_ptr<EnvelopeEditor> EqualizationPanel::mLinEditor

private

Definition at line 367 of file Equalization.h.

Referenced by OnMouseEvent().

◆ mLogEditor

std::unique_ptr<EnvelopeEditor> EqualizationPanel::mLogEditor

private

Definition at line 367 of file Equalization.h.

Referenced by OnMouseEvent().

◆ mOuti

Floats EqualizationPanel::mOuti

private

Definition at line 378 of file Equalization.h.

Referenced by Recalc().

◆ mOutr

Floats EqualizationPanel::mOutr

private

Definition at line 378 of file Equalization.h.

Referenced by OnPaint(), and Recalc().

◆ mParent

wxWindow* EqualizationPanel::mParent

private

Definition at line 365 of file Equalization.h.

◆ mRecalcRequired

bool EqualizationPanel::mRecalcRequired

private

Definition at line 369 of file Equalization.h.

Referenced by ForceRecalc(), and OnPaint().

◆ mWidth

int EqualizationPanel::mWidth

private

Definition at line 373 of file Equalization.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()

◆ ForceRecalc()

◆ OnCaptureLost()

◆ OnMouseEvent()

◆ OnPaint()

◆ OnSize()

◆ Recalc()

Member Data Documentation

◆ mBitmap

◆ mEffect

◆ mEnvRect

◆ mHeight

◆ mLinEditor

◆ mLogEditor

◆ mOuti

◆ mOutr

◆ mParent

◆ mRecalcRequired

◆ mWidth