anonymous_namespace{WaveformView.cpp}::WaveformPainter Class Reference

Inheritance diagram for anonymous_namespace{WaveformView.cpp}::WaveformPainter:

Collaboration diagram for anonymous_namespace{WaveformView.cpp}::WaveformPainter:

Classes
struct	ChannelCaches

Public Member Functions
	WaveformPainter ()
WaveformPainter &	EnsureClip (const WaveClip &clip)
void	SetSelection (const ZoomInfo &zoomInfo, float t0, float t1, bool selected)
void	Draw (int channelIndex, wxDC &dc, const WavePaintParameters &params, const ZoomInfo &zoomInfo, const wxRect &targetRect, int leftOffset, double from, double to)
void	SwapChannels () override
	Default implementation does nothing. More...
void	MarkChanged () noexcept override
void	Invalidate () override
std::unique_ptr< WaveClipListener >	Clone () const override
Public Member Functions inherited from WaveClipListener
virtual	~WaveClipListener ()=0
virtual void	MarkChanged () noexcept=0
virtual void	Invalidate ()=0
virtual void	WriteXMLAttributes (XMLWriter &writer) const
virtual bool	HandleXMLAttribute (const std::string_view &attr, const XMLAttributeValueView &valueView)
virtual void	MakeStereo (WaveClipListener &&other, bool aligned)
virtual void	SwapChannels ()
	Default implementation does nothing. More...
virtual void	Erase (size_t index)

Static Public Member Functions
static WaveformPainter &	Get (const WaveClip &clip)

Private Attributes
const WaveClip *	mWaveClip {}
std::vector< ChannelCaches >	mChannelCaches
std::atomic< bool >	mChanged = false

Detailed Description

Definition at line 212 of file WaveformView.cpp.

Constructor & Destructor Documentation

WaveformPainter()

anonymous_namespace{WaveformView.cpp}::WaveformPainter::WaveformPainter ( )

inline

Definition at line 219 of file WaveformView.cpp.

   {
   }

Member Function Documentation

Clone()

std::unique_ptr< WaveClipListener > anonymous_namespace{WaveformView.cpp}::WaveformPainter::Clone ( ) const

inlineoverride

Definition at line 317 of file WaveformView.cpp.

   {
      return std::make_unique<WaveformPainter>();
   }

Draw()

void anonymous_namespace{WaveformView.cpp}::WaveformPainter::Draw ( int  channelIndex, wxDC &  dc, const WavePaintParameters &  params, const ZoomInfo &  zoomInfo, const wxRect &  targetRect, int  leftOffset, double  from, double  to  )

inline

Definition at line 259 of file WaveformView.cpp.

   {
      auto& channelCache = mChannelCaches[channelIndex];
 
      channelCache.BitmapCache->SetPaintParameters(params);
 
      auto range = channelCache.BitmapCache->PerformLookup(zoomInfo, from, to);
 
      auto left   = targetRect.x + leftOffset;
      auto height = targetRect.height;
 
      const auto top = targetRect.y;
 
      wxMemoryDC memdc;
      for (auto it = range.begin(); it != range.end(); ++it)
      {
         const auto elementLeftOffset  = it.GetLeftOffset();
         const auto elementRightOffset = it.GetRightOffset();
 
         const auto width = WaveBitmapCache::CacheElementWidth -
                            elementLeftOffset - elementRightOffset;
 
         auto& bitmap = static_cast<WaveBitmapCacheElementWX&>(*it).GetBitmap();
         memdc.SelectObject(bitmap);
         dc.Blit(
            wxPoint(left, targetRect.y), wxSize(width, it->Height()), &memdc,
            wxPoint(elementLeftOffset, 0));
 
         left += width;
      }
   }

References GraphicsDataCacheBase::CacheElementWidth, anonymous_namespace{WaveformView.cpp}::WaveBitmapCacheElementWX::GetBitmap(), and params.

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EnsureClip()

WaveformPainter & anonymous_namespace{WaveformView.cpp}::WaveformPainter::EnsureClip ( const WaveClip &  clip )

inline

Definition at line 223 of file WaveformView.cpp.

   {
      const auto changed = mChanged.exchange(false);
      if (&clip != mWaveClip || changed)
         mChannelCaches.clear();
 
      const auto nChannels = clip.NChannels();
 
      if (mChannelCaches.size() == nChannels)
         return *this;
 
      mWaveClip = &clip;
 
      mChannelCaches.reserve(nChannels);
 
      for (auto channelIndex = 0; channelIndex < nChannels; ++channelIndex)
      {
         auto dataCache = std::make_shared<WaveDataCache>(clip, channelIndex);
 
         auto bitmapCache = std::make_unique<WaveBitmapCache>(
            clip, dataCache,
            [] { return std::make_unique<WaveBitmapCacheElementWX>(); });
 
         mChannelCaches.push_back(
            { std::move(dataCache), std::move(bitmapCache) });
      }
 
      return *this;
   }

References WaveClip::NChannels().

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Get()

WaveformPainter & WaveformPainter::Get ( const WaveClip &  clip )

static

Definition at line 1197 of file WaveformView.cpp.

{
   return const_cast< WaveClip& >( clip ) // Consider it mutable data
      .Attachments::Get<WaveformPainter>(sKeyW).EnsureClip(clip);
}

References sKeyW.

Invalidate()

void anonymous_namespace{WaveformView.cpp}::WaveformPainter::Invalidate ( )

inlineoverridevirtual

Implements WaveClipListener.

Definition at line 308 of file WaveformView.cpp.

   {
      for (auto& channelCache : mChannelCaches)
      {
         channelCache.DataCache->Invalidate();
         channelCache.BitmapCache->Invalidate();
      }
   }

MarkChanged()

void anonymous_namespace{WaveformView.cpp}::WaveformPainter::MarkChanged ( )

inlineoverridevirtualnoexcept

Implements WaveClipListener.

Definition at line 301 of file WaveformView.cpp.

   {
      //Triggered when any part of the waveform has changed
      //TODO: invalidate parts of the cache that intersect changes
      mChanged.store(true);
   }

SetSelection()

void anonymous_namespace{WaveformView.cpp}::WaveformPainter::SetSelection ( const ZoomInfo &  zoomInfo, float  t0, float  t1, bool  selected  )

inline

Definition at line 253 of file WaveformView.cpp.

   {
      for (auto& channelCache : mChannelCaches)
         channelCache.BitmapCache->SetSelection(zoomInfo, t0, t1, selected);
   }

SwapChannels()

void anonymous_namespace{WaveformView.cpp}::WaveformPainter::SwapChannels ( )

inlineoverridevirtual

Default implementation does nothing.

Reimplemented from WaveClipListener.

Definition at line 294 of file WaveformView.cpp.

   {
      //Wave data cache captures channel index which becomes
      //part of it's state, request cache rebuild...
      mChanged.store(true);
   }

Member Data Documentation

mChanged

std::atomic<bool> anonymous_namespace{WaveformView.cpp}::WaveformPainter::mChanged = false

private

Definition at line 332 of file WaveformView.cpp.

mChannelCaches

std::vector<ChannelCaches> anonymous_namespace{WaveformView.cpp}::WaveformPainter::mChannelCaches

private

Definition at line 331 of file WaveformView.cpp.

mWaveClip

const WaveClip* anonymous_namespace{WaveformView.cpp}::WaveformPainter::mWaveClip {}

private

Definition at line 323 of file WaveformView.cpp.

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

• WaveformView.cpp