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mirror of https://github.com/cookiengineer/audacity synced 2025-06-17 00:20:06 +02:00

TrackPanel no longer implements the draw tool...

... also implement ESC key for it
This commit is contained in:
Paul Licameli 2015-07-08 02:48:21 -04:00 committed by Paul Licameli
parent 85c03bb3b3
commit f1f254f974
11 changed files with 608 additions and 435 deletions

View File

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@ -3001,6 +3002,8 @@
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@ -3034,6 +3037,9 @@
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@ -5784,6 +5787,8 @@
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5E000A201EC7B5D500E8FD93 /* SampleHandle.h */,
5EA018231EC7B226001F2996 /* WaveTrackControls.cpp */,
5EA018241EC7B226001F2996 /* WaveTrackControls.h */,
5EA018251EC7B226001F2996 /* WaveTrackUI.cpp */,
@ -7550,6 +7555,7 @@
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1790B13E09883BFD008A330A /* Invert.cpp in Sources */,
1790B13F09883BFD008A330A /* LadspaEffect.cpp in Sources */,
5E000A211EC7B5D500E8FD93 /* SampleHandle.cpp in Sources */,
1790B14109883BFD008A330A /* Leveller.cpp in Sources */,
1790B14209883BFD008A330A /* LoadEffects.cpp in Sources */,
5E0784311DF1E4F400CA76EA /* UserException.cpp in Sources */,

View File

@ -559,6 +559,8 @@ audacity_SOURCES = \
tracks/playabletrack/notetrack/ui/NoteTrackUI.cpp \
tracks/playabletrack/notetrack/ui/NoteTrackVRulerControls.cpp \
tracks/playabletrack/notetrack/ui/NoteTrackVRulerControls.h \
tracks/playabletrack/wavetrack/ui/SampleHandle.cpp \
tracks/playabletrack/wavetrack/ui/SampleHandle.h \
tracks/playabletrack/wavetrack/ui/WaveTrackControls.cpp \
tracks/playabletrack/wavetrack/ui/WaveTrackControls.h \
tracks/playabletrack/wavetrack/ui/WaveTrackVRulerControls.cpp \

View File

@ -467,7 +467,6 @@ TrackPanel::TrackPanel(wxWindow * parent, wxWindowID id,
mRedrawAfterStop = false;
mPencilCursor = MakeCursor( wxCURSOR_PENCIL, DrawCursorXpm, 12, 22);
mSelectCursor = MakeCursor( wxCURSOR_IBEAM, IBeamCursorXpm, 17, 16);
mEnvelopeCursor= MakeCursor( wxCURSOR_ARROW, EnvCursorXpm, 16, 16);
mDisabledCursor= MakeCursor( wxCURSOR_NO_ENTRY, DisabledCursorXpm,16, 16);
@ -492,7 +491,6 @@ TrackPanel::TrackPanel(wxWindow * parent, wxWindowID id,
#endif
mArrowCursor = std::make_unique<wxCursor>(wxCURSOR_ARROW);
mSmoothCursor = std::make_unique<wxCursor>(wxCURSOR_SPRAYCAN);
mResizeCursor = std::make_unique<wxCursor>(wxCURSOR_SIZENS);
mRearrangeCursor = std::make_unique<wxCursor>(wxCURSOR_HAND);
mAdjustLeftSelectionCursor = std::make_unique<wxCursor>(wxCURSOR_POINT_LEFT);
@ -520,10 +518,6 @@ TrackPanel::TrackPanel(wxWindow * parent, wxWindowID id,
// Timer is started after the window is visible
GetProject()->Bind(wxEVT_IDLE, &TrackPanel::OnIdle, this);
//Initialize a member variable pointing to the current
//drawing track.
mDrawingTrack =NULL;
mZoomStart = -1;
mZoomEnd = -1;
@ -1157,7 +1151,6 @@ void TrackPanel::HandleInterruptedDrag()
IsClosing,
IsAdjustingLabel,
IsAdjustingSample,
IsRearranging,
IsSliding,
IsEnveloping,
@ -1298,7 +1291,6 @@ bool TrackPanel::HandleEscapeKey(bool down)
}
break;
case IsVZooming:
//case IsAdjustingSample:
break;
case IsResizing:
mCapturedTrack->SetHeight(mInitialActualHeight);
@ -1762,7 +1754,7 @@ void TrackPanel::SetCursorAndTipWhenSelectTool( Track * t,
/// In this method we know what tool we are using,
/// so set the cursor accordingly.
void TrackPanel::SetCursorAndTipByTool( int tool,
const wxMouseEvent & event, wxString& )
const wxMouseEvent &, wxString& )
{
bool unsafe = IsUnsafe();
@ -1777,12 +1769,6 @@ void TrackPanel::SetCursorAndTipByTool( int tool,
case slideTool:
SetCursor(unsafe ? *mDisabledCursor : *mSlideCursor);
break;
case drawTool:
if (unsafe)
SetCursor(*mDisabledCursor);
else
SetCursor(event.AltDown()? *mSmoothCursor : *mPencilCursor);
break;
}
// doesn't actually change the tip itself, but it could (should?) do at some
// future date.
@ -4407,330 +4393,6 @@ void TrackPanel::HandleWaveTrackVZoom
}
}
namespace {
// Is the sample horizontally nearest to the cursor sufficiently separated from
// its neighbors that the pencil tool should be allowed to drag it?
bool SampleResolutionTest(const ViewInfo &viewInfo, const WaveTrack *wt, double time, double rate, int width)
{
// Require more than 3 pixels per sample
// Round to an exact sample time
const double adjustedTime = wt->LongSamplesToTime(wt->TimeToLongSamples(time));
const wxInt64 xx = std::max(wxInt64(0), viewInfo.TimeToPosition(adjustedTime));
ZoomInfo::Intervals intervals;
viewInfo.FindIntervals(rate, intervals, width);
ZoomInfo::Intervals::const_iterator it = intervals.begin(), end = intervals.end(), prev;
wxASSERT(it != end && it->position == 0);
do
prev = it++;
while (it != end && it->position <= xx);
const double threshold = 3 * rate; // three times as many pixels per second, as samples
return prev->averageZoom > threshold;
}
}
/// Determines if we can edit samples in a wave track.
/// Also pops up warning messages in certain cases where we can't.
/// @return true if we can edit the samples, false otherwise.
bool TrackPanel::IsSampleEditingPossible( wxMouseEvent &event, const WaveTrack * wt )
{
//Exit if it's not waveform display
//Get out of here if we shouldn't be drawing right now:
//If we aren't displaying the waveform, Display a message dialog
const int display = wt->GetDisplay();
if (WaveTrack::Waveform != display)
{
wxMessageBox(_("To use Draw, choose 'Waveform' or 'Waveform (dB)' in the Track Dropdown Menu."), _("Draw Tool"));
return false;
}
bool showPoints;
{
const auto foundCell = FindCell(event.m_x, event.m_y);
if ( foundCell.type != CellType::Track )
return false;
const double rate = wt->GetRate();
const double time = mViewInfo->PositionToTime(event.m_x, foundCell.rect.x);
int width;
GetTracksUsableArea(&width, NULL);
showPoints = SampleResolutionTest(*mViewInfo, wt, time, rate, width);
}
//If we aren't zoomed in far enough, show a message dialog.
if(!showPoints)
{
wxMessageBox(_("To use Draw, zoom in further until you can see the individual samples."), _("Draw Tool"));
return false;
}
return true;
}
float TrackPanel::FindSampleEditingLevel(wxMouseEvent &event, double dBRange, double t0)
{
// Calculate where the mouse is located vertically (between +/- 1)
float zoomMin, zoomMax;
mDrawingTrack->GetDisplayBounds(&zoomMin, &zoomMax);
const int y = event.m_y - mDrawingTrackTop;
const int height = mDrawingTrack->GetHeight() - (kTopMargin + kBottomMargin);
const bool dB = !mDrawingTrack->GetWaveformSettings().isLinear();
float newLevel =
::ValueOfPixel(y, height, false, dB, dBRange, zoomMin, zoomMax);
//Take the envelope into account
Envelope *const env = mDrawingTrack->GetEnvelopeAtX(event.m_x);
if (env)
{
// Calculate sample as it would be rendered, so quantize time
double envValue = env->GetValue( t0, 1.0 / mDrawingTrack->GetRate() );
if (envValue > 0)
newLevel /= envValue;
else
newLevel = 0;
//Make sure the NEW level is between +/-1
newLevel = std::max(-1.0f, std::min(1.0f, newLevel));
}
return newLevel;
}
/// We're in a track view and zoomed enough to see the samples.
/// Someone has just clicked the mouse. What do we do?
void TrackPanel::HandleSampleEditingClick( wxMouseEvent & event )
{
//Get the track the mouse is over, and save it away for future events
mDrawingTrack = NULL;
const auto foundCell = FindCell(event.m_x, event.m_y);
auto &t = foundCell.pTrack;
auto &rect = foundCell.rect;
if (!t || (t->GetKind() != Track::Wave)
|| foundCell.type != CellType::Track)
return;
const auto wt = static_cast<WaveTrack *>(t);
if( !IsSampleEditingPossible( event, wt ) )
return;
/// \todo Should mCapturedTrack take the place of mDrawingTrack??
mDrawingTrack = wt;
mDrawingTrackTop = rect.y + kTopMargin;
//If we are still around, we are drawing in earnest. Set some member data structures up:
//First, calculate the starting sample. To get this, we need the time
double t0 = mViewInfo->PositionToTime(event.m_x, GetLeftOffset());
//convert t0 to samples
mDrawingStartSample = mDrawingTrack->TimeToLongSamples(t0);
// quantize
t0 = mDrawingTrack->LongSamplesToTime(mDrawingStartSample);
//Determine how drawing should occur. If alt is down,
//do a smoothing, instead of redrawing.
if( event.m_altDown )
{
//*************************************************
//*** ALT-DOWN-CLICK (SAMPLE SMOOTHING) ***
//*************************************************
//
// Smoothing works like this: There is a smoothing kernel radius constant that
// determines how wide the averaging window is. Plus, there is a smoothing brush radius,
// which determines how many pixels wide around the selected pixel this smoothing is applied.
//
// Samples will be replaced by a mixture of the original points and the smoothed points,
// with a triangular mixing probability whose value at the center point is
// SMOOTHING_PROPORTION_MAX and at the far bounds is SMOOTHING_PROPORTION_MIN
//Get the region of samples around the selected point
size_t sampleRegionSize = 1 + 2 * (SMOOTHING_KERNEL_RADIUS + SMOOTHING_BRUSH_RADIUS);
Floats sampleRegion{ sampleRegionSize };
Floats newSampleRegion{ 1 + 2 * (size_t)SMOOTHING_BRUSH_RADIUS };
//Get a sample from the track to do some tricks on.
mDrawingTrack->Get((samplePtr)sampleRegion.get(), floatSample,
mDrawingStartSample - SMOOTHING_KERNEL_RADIUS - SMOOTHING_BRUSH_RADIUS,
sampleRegionSize);
//Go through each point of the smoothing brush and apply a smoothing operation.
for(auto j = -SMOOTHING_BRUSH_RADIUS; j <= SMOOTHING_BRUSH_RADIUS; j++){
float sumOfSamples = 0;
for (auto i = -SMOOTHING_KERNEL_RADIUS; i <= SMOOTHING_KERNEL_RADIUS; i++){
//Go through each point of the smoothing kernel and find the average
//The average is a weighted average, scaled by a weighting kernel that is simply triangular
// A triangular kernel across N items, with a radius of R ( 2 R + 1 points), if the farthest:
// points have a probability of a, the entire triangle has total probability of (R + 1)^2.
// For sample number i and middle brush sample M, (R + 1 - abs(M-i))/ ((R+1)^2) gives a
// legal distribution whose total probability is 1.
//
//
// weighting factor value
sumOfSamples += (SMOOTHING_KERNEL_RADIUS + 1 - abs(i)) * sampleRegion[i + j + SMOOTHING_KERNEL_RADIUS + SMOOTHING_BRUSH_RADIUS];
}
newSampleRegion[j + SMOOTHING_BRUSH_RADIUS] = sumOfSamples/((SMOOTHING_KERNEL_RADIUS + 1) *(SMOOTHING_KERNEL_RADIUS + 1) );
}
// Now that the NEW sample levels are determined, go through each and mix it appropriately
// with the original point, according to a 2-part linear function whose center has probability
// SMOOTHING_PROPORTION_MAX and extends out SMOOTHING_BRUSH_RADIUS, at which the probability is
// SMOOTHING_PROPORTION_MIN. _MIN and _MAX specify how much of the smoothed curve make it through.
float prob;
for(auto j = -SMOOTHING_BRUSH_RADIUS; j <= SMOOTHING_BRUSH_RADIUS; j++){
prob = SMOOTHING_PROPORTION_MAX - (float)abs(j)/SMOOTHING_BRUSH_RADIUS * (SMOOTHING_PROPORTION_MAX - SMOOTHING_PROPORTION_MIN);
newSampleRegion[j+SMOOTHING_BRUSH_RADIUS] =
newSampleRegion[j + SMOOTHING_BRUSH_RADIUS] * prob +
sampleRegion[SMOOTHING_BRUSH_RADIUS + SMOOTHING_KERNEL_RADIUS + j] * (1 - prob);
}
//Set the sample to the point of the mouse event
mDrawingTrack->Set((samplePtr)newSampleRegion.get(), floatSample, mDrawingStartSample - SMOOTHING_BRUSH_RADIUS, 1 + 2 * SMOOTHING_BRUSH_RADIUS);
mDrawingLastDragSampleValue = 0;
}
else
{
//*************************************************
//*** PLAIN DOWN-CLICK (NORMAL DRAWING) ***
//*************************************************
SetCapturedTrack(t, IsAdjustingSample);
//Otherwise (e.g., the alt button is not down) do normal redrawing, based on the mouse position.
const float newLevel = FindSampleEditingLevel
(event, mDrawingTrack->GetWaveformSettings().dBRange, t0);
//Set the sample to the point of the mouse event
mDrawingTrack->Set((samplePtr)&newLevel, floatSample, mDrawingStartSample, 1);
mDrawingLastDragSampleValue = newLevel;
}
//Set the member data structures for drawing
mDrawingLastDragSample=mDrawingStartSample;
//Redraw the region of the selected track
RefreshTrack(mDrawingTrack);
}
void TrackPanel::HandleSampleEditingDrag( wxMouseEvent & event )
{
//*************************************************
//*** DRAG-DRAWING ***
//*************************************************
//The following will happen on a drag or a down-click.
// The point should get re-drawn at the location of the mouse.
//Exit if the mDrawingTrack is null.
if( mDrawingTrack == NULL)
return;
//Exit dragging if the alt key is down--Don't allow left-right dragging for smoothing operation
if (mMouseCapture != IsAdjustingSample)
return;
sampleCount s0; //declare this for use below. It designates the sample number which to draw.
// Figure out what time the click was at
//Find the point that we want to redraw at. If the control button is down,
//adjust only the originally clicked-on sample
if( event.m_controlDown) {
//*************************************************
//*** CTRL-DOWN (Hold Initial Sample Constant ***
//*************************************************
s0 = mDrawingStartSample;
}
else {
//*************************************************
//*** Normal CLICK-drag (Normal drawing) ***
//*************************************************
//Otherwise, adjust the sample you are dragging over right now.
//convert this to samples
const double t = mViewInfo->PositionToTime(event.m_x, GetLeftOffset());
s0 = mDrawingTrack->TimeToLongSamples(t);
}
const double t0 = mDrawingTrack->LongSamplesToTime(s0);
//Otherwise, do normal redrawing, based on the mouse position.
// Calculate where the mouse is located vertically (between +/- 1)
const float newLevel = FindSampleEditingLevel
(event, mDrawingTrack->GetWaveformSettings().dBRange, t0);
//Now, redraw all samples between current and last redrawn sample, inclusive
//Go from the smaller to larger sample.
const auto start = std::min( s0, mDrawingLastDragSample);
const auto end = std::max( s0, mDrawingLastDragSample);
// Few enough samples to be drawn individually on screen will not
// overflow size_t:
const auto size = ( end - start + 1 ).as_size_t();
if (size == 1) {
mDrawingTrack->Set((samplePtr)&newLevel, floatSample, start, size);
}
else {
std::vector<float> values(size);
for (auto i = start; i <= end; ++i) {
//This interpolates each sample linearly:
// i - start will not overflow size_t either:
values[( i - start ).as_size_t()] =
mDrawingLastDragSampleValue + (newLevel - mDrawingLastDragSampleValue) *
(i - mDrawingLastDragSample).as_float() /
(s0 - mDrawingLastDragSample).as_float();
}
mDrawingTrack->Set((samplePtr)&values[0], floatSample, start, size);
}
//Update the member data structures.
mDrawingLastDragSample=s0;
mDrawingLastDragSampleValue = newLevel;
//Redraw the region of the selected track
RefreshTrack(mDrawingTrack);
}
void TrackPanel::HandleSampleEditingButtonUp( wxMouseEvent & WXUNUSED(event))
{
//*************************************************
//*** UP-CLICK (Finish drawing) ***
//*************************************************
SetCapturedTrack( NULL );
//On up-click, send the state to the undo stack
mDrawingTrack=NULL; //Set this to NULL so it will catch improper drag events.
MakeParentPushState(_("Moved Samples"),
_("Sample Edit"),
UndoPush::CONSOLIDATE | UndoPush::AUTOSAVE);
}
/// This handles adjusting individual samples by hand using the draw tool(s)
///
/// There are several member data structure for handling drawing:
/// - mDrawingTrack: keeps track of which track you clicked down on, so drawing doesn't
/// jump to a NEW track
/// - mDrawingTrackTop: The top position of the drawing track--makes drawing easier.
/// - mDrawingStartSample: The sample you clicked down on, so that you can hold it steady
/// - mDrawingLastDragSample: When drag-drawing, this keeps track of the last sample you dragged over,
/// so it can smoothly redraw samples that got skipped over
/// - mDrawingLastDragSampleValue: The value of the last
void TrackPanel::HandleSampleEditing(wxMouseEvent & event)
{
if (event.LeftDown() ) {
HandleSampleEditingClick( event);
} else if (mDrawingTrack && event.Dragging()) {
HandleSampleEditingDrag( event );
} else if(mDrawingTrack && event.ButtonUp()) {
HandleSampleEditingButtonUp( event );
}
}
// This is for when a given track gets the x.
void TrackPanel::HandleClosing(wxMouseEvent & event)
{
@ -6885,10 +6547,6 @@ void TrackPanel::HandleTrackSpecificMouseEvent(wxMouseEvent & event)
if (!unsafe)
HandleSlide(event);
break;
case drawTool:
if (!unsafe)
HandleSampleEditing(event);
break;
}
}
}
@ -6958,8 +6616,6 @@ int TrackPanel::DetermineToolToUse( ToolsToolBar * pTtb, const wxMouseEvent & ev
currentTool = envelopeTool;
} else if( HitTestSlide( pTrack, rect, event )){
currentTool = slideTool;
} else if( HitTestSamples( pTrack, rect, event )){
currentTool = drawTool;
}
//Use the false argument since in multimode we don't
@ -7069,62 +6725,6 @@ bool TrackPanel::HitTestEnvelope(Track *track, const wxRect &rect, const wxMouse
return( distance < yTolerance );
}
/// method that tells us if the mouse event landed on an
/// editable sample
bool TrackPanel::HitTestSamples(Track *track, const wxRect &rect, const wxMouseEvent & event)
{
wxASSERT(track);
if( track->GetKind() != Track::Wave )
return false;
WaveTrack *wavetrack = (WaveTrack *)track;
//Get rate in order to calculate the critical zoom threshold
double rate = wavetrack->GetRate();
const double dBRange = wavetrack->GetWaveformSettings().dBRange;
const int displayType = wavetrack->GetDisplay();
if (WaveTrack::Waveform != displayType)
return false; // Not a wave, so return.
const bool dB = !wavetrack->GetWaveformSettings().isLinear();
const double tt = mViewInfo->PositionToTime(event.m_x, rect.x);
int width;
GetTracksUsableArea(&width, NULL);
if (!SampleResolutionTest(*mViewInfo, wavetrack, tt, rate, width))
return false;
// Just get one sample.
float oneSample;
auto s0 = (sampleCount)(tt * rate + 0.5);
if ( !wavetrack->Get(
(samplePtr)&oneSample, floatSample, s0, 1, fillZero,
// Do not propagate exception but return a failure value
false))
return false;
// Get y distance of envelope point from center line (in pixels).
float zoomMin, zoomMax;
wavetrack->GetDisplayBounds(&zoomMin, &zoomMax);
double envValue = 1.0;
Envelope* env = wavetrack->GetEnvelopeAtX(event.GetX());
if (env)
// Calculate sample as it would be rendered, so quantize time
envValue = env->GetValue( tt, 1.0 / wavetrack->GetRate() );
int yValue = GetWaveYPos( oneSample * envValue,
zoomMin, zoomMax,
rect.height, dB, true, dBRange, false) + rect.y;
// Get y position of mouse (in pixels)
int yMouse = event.m_y;
// Perhaps yTolerance should be put into preferences?
const int yTolerance = 10; // More tolerance on samples than on envelope.
return( abs( yValue - yMouse ) < yTolerance );
}
/// method that tells us if the mouse event landed on a
/// time-slider that allows us to time shift the sequence.
bool TrackPanel::HitTestSlide(Track * WXUNUSED(track), const wxRect &rect, const wxMouseEvent & event)

View File

@ -398,7 +398,6 @@ class AUDACITY_DLL_API TrackPanel final : public OverlayPanel {
// Working out where to dispatch the event to.
virtual int DetermineToolToUse( ToolsToolBar * pTtb, const wxMouseEvent & event);
virtual bool HitTestEnvelope(Track *track, const wxRect &rect, const wxMouseEvent & event);
virtual bool HitTestSamples(Track *track, const wxRect &rect, const wxMouseEvent & event);
virtual bool HitTestSlide(Track *track, const wxRect &rect, const wxMouseEvent & event);
#ifdef USE_MIDI
// data for NoteTrack interactive stretch operations:
@ -529,14 +528,6 @@ protected:
WaveTrack *track, bool shiftDown, bool rightUp,
bool fixedMousePoint);
// Handle sample editing using the 'draw' tool.
virtual bool IsSampleEditingPossible( wxMouseEvent & event, const WaveTrack * t );
virtual void HandleSampleEditing(wxMouseEvent & event);
float FindSampleEditingLevel(wxMouseEvent &event, double dBRange, double t0);
virtual void HandleSampleEditingClick( wxMouseEvent & event );
virtual void HandleSampleEditingDrag( wxMouseEvent & event );
virtual void HandleSampleEditingButtonUp( wxMouseEvent & event );
// MM: Handle mouse wheel rotation
virtual void HandleWheelRotation(wxMouseEvent & event);
virtual void HandleWheelRotationInVRuler
@ -823,12 +814,6 @@ public:
protected:
WaveTrack * mDrawingTrack; // Keeps track of which track you are drawing on between events cf. HandleDraw()
int mDrawingTrackTop; // Keeps track of the top position of the drawing track.
sampleCount mDrawingStartSample; // sample of last click-down
sampleCount mDrawingLastDragSample; // sample of last drag-over
float mDrawingLastDragSampleValue; // value of last drag-over
#ifdef EXPERIMENTAL_SPECTRAL_EDITING
void HandleCenterFrequencyCursor
(bool shiftDown, wxString &tip, const wxCursor ** ppCursor);
@ -880,7 +865,6 @@ public:
IsSelecting,
IsAdjustingLabel,
IsSelectingLabelText,
IsAdjustingSample,
IsResizing,
IsResizingBetweenLinkedTracks,
IsResizingBelowLinkedTracks,
@ -913,10 +897,10 @@ protected:
int mRearrangeCount;
std::unique_ptr<wxCursor>
mArrowCursor, mPencilCursor, mSelectCursor,
mArrowCursor, mSelectCursor,
mResizeCursor, mSlideCursor, mEnvelopeCursor, // doubles as the center frequency cursor
// for spectral selection
mSmoothCursor, mZoomInCursor, mZoomOutCursor,
mZoomInCursor, mZoomOutCursor,
mRearrangeCursor,
mDisabledCursor, mAdjustLeftSelectionCursor, mAdjustRightSelectionCursor;
#ifdef EXPERIMENTAL_SPECTRAL_EDITING
@ -1026,10 +1010,5 @@ enum : int {
// for vertical selection adjusting)
#define SELECTION_RESIZE_REGION 3
#define SMOOTHING_KERNEL_RADIUS 3
#define SMOOTHING_BRUSH_RADIUS 5
#define SMOOTHING_PROPORTION_MAX 0.7
#define SMOOTHING_PROPORTION_MIN 0.0
#endif

View File

@ -88,6 +88,9 @@ ToolsToolBar::ToolsToolBar()
mMessageOfTool[selectTool] = _("Click and drag to select audio");
mMessageOfTool[envelopeTool] = _("Click and drag to edit the amplitude envelope");
// TODO: message should also mention the brush. Describing the modifier key
// (alt, or other) varies with operating system.
mMessageOfTool[drawTool] = _("Click and drag to edit the samples");
// TODO: Why not mention middle click to zoom normal on Windows too?

View File

@ -0,0 +1,483 @@
/**********************************************************************
Audacity: A Digital Audio Editor
SampleHandle.cpp
Paul Licameli split from TrackPanel.cpp
**********************************************************************/
#include "../../../../Audacity.h"
#include "SampleHandle.h"
#include <algorithm>
#include "../../../../MemoryX.h"
#include <wx/gdicmn.h>
#include "../../../../Envelope.h"
#include "../../../../HitTestResult.h"
#include "../../../../prefs/WaveformSettings.h"
#include "../../../../Project.h"
#include "../../../../RefreshCode.h"
#include "../../../../toolbars/ToolsToolBar.h"
#include "../../../../TrackArtist.h"
#include "../../../../TrackPanelMouseEvent.h"
#include "../../../../UndoManager.h"
#include "../../../../ViewInfo.h"
#include "../../../../WaveTrack.h"
#include "../../../../../images/Cursors.h"
static const int SMOOTHING_KERNEL_RADIUS = 3;
static const int SMOOTHING_BRUSH_RADIUS = 5;
static const double SMOOTHING_PROPORTION_MAX = 0.7;
static const double SMOOTHING_PROPORTION_MIN = 0.0;
SampleHandle::SampleHandle()
{
}
SampleHandle &SampleHandle::Instance()
{
static SampleHandle instance;
return instance;
}
HitTestPreview SampleHandle::HitPreview
(const wxMouseEvent &event, const AudacityProject *pProject, bool unsafe)
{
static auto disabledCursor =
::MakeCursor(wxCURSOR_NO_ENTRY, DisabledCursorXpm, 16, 16);
static wxCursor smoothCursor{ wxCURSOR_SPRAYCAN };
static auto pencilCursor =
::MakeCursor(wxCURSOR_PENCIL, DrawCursorXpm, 12, 22);
const ToolsToolBar *const ttb = pProject->GetToolsToolBar();
return {
ttb->GetMessageForTool(drawTool),
(unsafe
? &*disabledCursor
: (event.AltDown()
? &smoothCursor
: &*pencilCursor))
};
}
HitTestResult SampleHandle::HitAnywhere
(const wxMouseEvent &event, const AudacityProject *pProject)
{
const bool unsafe = pProject->IsAudioActive();
return {
HitPreview(event, pProject, unsafe),
(unsafe
? NULL
: &Instance())
};
}
namespace {
inline double adjustTime(const WaveTrack *wt, double time)
{
// Round to an exact sample time
return wt->LongSamplesToTime(wt->TimeToLongSamples(time));
}
// Is the sample horizontally nearest to the cursor sufficiently separated
// from its neighbors that the pencil tool should be allowed to drag it?
bool SampleResolutionTest
( const ViewInfo &viewInfo, const WaveTrack *wt, double time, int width )
{
// Require more than 3 pixels per sample
const wxInt64 xx = std::max(wxInt64(0), viewInfo.TimeToPosition(time));
ZoomInfo::Intervals intervals;
const double rate = wt->GetRate();
viewInfo.FindIntervals(rate, intervals, width);
ZoomInfo::Intervals::const_iterator it = intervals.begin(),
end = intervals.end(), prev;
wxASSERT(it != end && it->position == 0);
do
prev = it++;
while (it != end && it->position <= xx);
const double threshold = 3 * rate;
// three times as many pixels per second, as samples
return prev->averageZoom > threshold;
}
}
HitTestResult SampleHandle::HitTest
(const wxMouseEvent &event, const wxRect &rect,
const AudacityProject *pProject, Track *pTrack)
{
const ViewInfo &viewInfo = pProject->GetViewInfo();
/// method that tells us if the mouse event landed on an
/// editable sample
if (pTrack->GetKind() != Track::Wave)
return {};
WaveTrack *wavetrack = static_cast<WaveTrack*>(pTrack);
const int displayType = wavetrack->GetDisplay();
if (WaveTrack::Waveform != displayType)
return {}; // Not a wave, so return.
const double tt =
adjustTime(wavetrack, viewInfo.PositionToTime(event.m_x, rect.x));
if (!SampleResolutionTest(viewInfo, wavetrack, tt, rect.width))
return {};
// Just get one sample.
float oneSample;
const double rate = wavetrack->GetRate();
const auto s0 = (sampleCount)(tt * rate + 0.5);
if (! wavetrack->Get((samplePtr)&oneSample, floatSample, s0, 1, fillZero,
// Do not propagate exception but return a failure value
false) )
return {};
// Get y distance of envelope point from center line (in pixels).
float zoomMin, zoomMax;
wavetrack->GetDisplayBounds(&zoomMin, &zoomMax);
double envValue = 1.0;
Envelope* env = wavetrack->GetEnvelopeAtX(event.GetX());
if (env)
// Calculate sample as it would be rendered, so quantize time
envValue = env->GetValue( tt, 1.0 / wavetrack->GetRate() );
const bool dB = !wavetrack->GetWaveformSettings().isLinear();
int yValue = GetWaveYPos(oneSample * envValue,
zoomMin, zoomMax,
rect.height, dB, true,
wavetrack->GetWaveformSettings().dBRange, false) + rect.y;
// Get y position of mouse (in pixels)
int yMouse = event.m_y;
// Perhaps yTolerance should be put into preferences?
const int yTolerance = 10; // More tolerance on samples than on envelope.
if (abs(yValue - yMouse) >= yTolerance)
return {};
return HitAnywhere(event, pProject);
}
SampleHandle::~SampleHandle()
{
}
namespace {
/// Determines if we can edit samples in a wave track.
/// Also pops up warning messages in certain cases where we can't.
/// @return true if we can edit the samples, false otherwise.
bool IsSampleEditingPossible
(const wxMouseEvent &event,
const wxRect &rect, const ViewInfo &viewInfo, Track *pTrack, int width)
{
if (pTrack->GetKind() != Track::Wave)
return false;
WaveTrack *wt = static_cast<WaveTrack*>(pTrack);
//Get out of here if we shouldn't be drawing right now:
//If we aren't displaying the waveform, Display a message dialog
const int display = wt->GetDisplay();
if (WaveTrack::Waveform != display)
{
wxMessageBox(_(
"To use Draw, choose 'Waveform' or 'Waveform (dB)' in the Track Dropdown Menu."),
_("Draw Tool"));
return false;
}
//If we aren't zoomed in far enough, show a message dialog.
const double time = adjustTime(wt, viewInfo.PositionToTime(event.m_x, rect.x));
if (!SampleResolutionTest(viewInfo, wt, time, width))
{
wxMessageBox(_(
"To use Draw, zoom in further until you can see the individual samples."),
_("Draw Tool"));
return false;
}
return true;
}
}
UIHandle::Result SampleHandle::Click
(const TrackPanelMouseEvent &evt, AudacityProject *pProject)
{
const wxMouseEvent &event = evt.event;
const wxRect &rect = evt.rect;
const ViewInfo &viewInfo = pProject->GetViewInfo();
Track *const pTrack = static_cast<Track*>(evt.pCell);
using namespace RefreshCode;
/// Someone has just clicked the mouse. What do we do?
const bool unsafe = pProject->IsAudioActive();
if (unsafe)
return Cancelled;
if (!IsSampleEditingPossible
(event, rect, viewInfo, pTrack, rect.width))
return Cancelled;
/// We're in a track view and zoomed enough to see the samples.
mClickedTrack = static_cast<WaveTrack*>(pTrack);
mRect = rect;
//If we are still around, we are drawing in earnest. Set some member data structures up:
//First, calculate the starting sample. To get this, we need the time
const double t0 =
adjustTime(mClickedTrack, viewInfo.PositionToTime(event.m_x, rect.x));
//convert t0 to samples
mClickedStartSample = mClickedTrack->TimeToLongSamples(t0);
//Determine how drawing should occur. If alt is down,
//do a smoothing, instead of redrawing.
if (event.m_altDown)
{
mAltKey = true;
//*************************************************
//*** ALT-DOWN-CLICK (SAMPLE SMOOTHING) ***
//*************************************************
//
// Smoothing works like this: There is a smoothing kernel radius constant that
// determines how wide the averaging window is. Plus, there is a smoothing brush radius,
// which determines how many pixels wide around the selected pixel this smoothing is applied.
//
// Samples will be replaced by a mixture of the original points and the smoothed points,
// with a triangular mixing probability whose value at the center point is
// SMOOTHING_PROPORTION_MAX and at the far bounds is SMOOTHING_PROPORTION_MIN
//Get the region of samples around the selected point
size_t sampleRegionSize = 1 + 2 * (SMOOTHING_KERNEL_RADIUS + SMOOTHING_BRUSH_RADIUS);
Floats sampleRegion{ sampleRegionSize };
Floats newSampleRegion{ 1 + 2 * (size_t)SMOOTHING_BRUSH_RADIUS };
//Get a sample from the track to do some tricks on.
mClickedTrack->Get((samplePtr)sampleRegion.get(), floatSample,
mClickedStartSample - SMOOTHING_KERNEL_RADIUS - SMOOTHING_BRUSH_RADIUS,
sampleRegionSize);
//Go through each point of the smoothing brush and apply a smoothing operation.
for (auto jj = -SMOOTHING_BRUSH_RADIUS; jj <= SMOOTHING_BRUSH_RADIUS; ++jj) {
float sumOfSamples = 0;
for (auto ii = -SMOOTHING_KERNEL_RADIUS; ii <= SMOOTHING_KERNEL_RADIUS; ++ii) {
//Go through each point of the smoothing kernel and find the average
//The average is a weighted average, scaled by a weighting kernel that is simply triangular
// A triangular kernel across N items, with a radius of R ( 2 R + 1 points), if the farthest:
// points have a probability of a, the entire triangle has total probability of (R + 1)^2.
// For sample number ii and middle brush sample M, (R + 1 - abs(M-ii))/ ((R+1)^2) gives a
// legal distribution whose total probability is 1.
//
//
// weighting factor value
sumOfSamples +=
(SMOOTHING_KERNEL_RADIUS + 1 - abs(ii)) *
sampleRegion[ii + jj + SMOOTHING_KERNEL_RADIUS + SMOOTHING_BRUSH_RADIUS];
}
newSampleRegion[jj + SMOOTHING_BRUSH_RADIUS] =
sumOfSamples /
((SMOOTHING_KERNEL_RADIUS + 1) *(SMOOTHING_KERNEL_RADIUS + 1));
}
// Now that the NEW sample levels are determined, go through each and mix it appropriately
// with the original point, according to a 2-part linear function whose center has probability
// SMOOTHING_PROPORTION_MAX and extends out SMOOTHING_BRUSH_RADIUS, at which the probability is
// SMOOTHING_PROPORTION_MIN. _MIN and _MAX specify how much of the smoothed curve make it through.
float prob;
for (auto jj = -SMOOTHING_BRUSH_RADIUS; jj <= SMOOTHING_BRUSH_RADIUS; ++jj) {
prob =
SMOOTHING_PROPORTION_MAX -
(float)abs(jj) / SMOOTHING_BRUSH_RADIUS *
(SMOOTHING_PROPORTION_MAX - SMOOTHING_PROPORTION_MIN);
newSampleRegion[jj + SMOOTHING_BRUSH_RADIUS] =
newSampleRegion[jj + SMOOTHING_BRUSH_RADIUS] * prob +
sampleRegion[SMOOTHING_BRUSH_RADIUS + SMOOTHING_KERNEL_RADIUS + jj] *
(1 - prob);
}
//Set the sample to the point of the mouse event
mClickedTrack->Set((samplePtr)newSampleRegion.get(), floatSample,
mClickedStartSample - SMOOTHING_BRUSH_RADIUS, 1 + 2 * SMOOTHING_BRUSH_RADIUS);
// mLastDragSampleValue will not be used
}
else
{
mAltKey = false;
//*************************************************
//*** PLAIN DOWN-CLICK (NORMAL DRAWING) ***
//*************************************************
//Otherwise (e.g., the alt button is not down) do normal redrawing, based on the mouse position.
const float newLevel = FindSampleEditingLevel(event, viewInfo, t0);
//Set the sample to the point of the mouse event
mClickedTrack->Set((samplePtr)&newLevel, floatSample, mClickedStartSample, 1);
mLastDragSampleValue = newLevel;
}
//Set the member data structures for drawing
mLastDragSample = mClickedStartSample;
// Sample data changed on either branch, so refresh the track display.
return RefreshCell;
}
UIHandle::Result SampleHandle::Drag
(const TrackPanelMouseEvent &evt, AudacityProject *pProject)
{
using namespace RefreshCode;
const wxMouseEvent &event = evt.event;
const ViewInfo &viewInfo = pProject->GetViewInfo();
const bool unsafe = pProject->IsAudioActive();
if (unsafe) {
this->Cancel(pProject);
return RefreshCell | Cancelled;
}
//*************************************************
//*** DRAG-DRAWING ***
//*************************************************
//No dragging effects if the alt key is down--
//Don't allow left-right dragging for smoothing operation
if (mAltKey)
return RefreshNone;
sampleCount s0; //declare this for use below. It designates which sample number to draw.
// Figure out what time the click was at
//Find the point that we want to redraw at. If the control button is down,
//adjust only the originally clicked-on sample
if (event.m_controlDown) {
//*************************************************
//*** CTRL-DOWN (Hold Initial Sample Constant ***
//*************************************************
s0 = mClickedStartSample;
}
else {
//*************************************************
//*** Normal CLICK-drag (Normal drawing) ***
//*************************************************
//Otherwise, adjust the sample you are dragging over right now.
//convert this to samples
const double tt = viewInfo.PositionToTime(event.m_x, mRect.x);
s0 = mClickedTrack->TimeToLongSamples(tt);
}
const double t0 = mClickedTrack->LongSamplesToTime(s0);
// Do redrawing, based on the mouse position.
// Calculate where the mouse is located vertically (between +/- 1)
const float newLevel = FindSampleEditingLevel(event, viewInfo, t0);
//Now, redraw all samples between current and last redrawn sample, inclusive
//Go from the smaller to larger sample.
const auto start = std::min(s0, mLastDragSample);
const auto end = std::max(s0, mLastDragSample);
// Few enough samples to be drawn individually on screen will not
// overflow size_t:
const auto size = ( end - start + 1 ).as_size_t();
if (size == 1) {
mClickedTrack->Set((samplePtr)&newLevel, floatSample, start, size);
}
else {
std::vector<float> values(size);
for (auto ii = start; ii <= end; ++ii) {
//This interpolates each sample linearly:
// i - start will not overflow size_t either:
values[( ii - start ).as_size_t()] =
mLastDragSampleValue + (newLevel - mLastDragSampleValue) *
(ii - mLastDragSample).as_float() /
(s0 - mLastDragSample).as_float();
}
mClickedTrack->Set((samplePtr)&values[0], floatSample, start, size);
}
//Update the member data structures.
mLastDragSample = s0;
mLastDragSampleValue = newLevel;
return RefreshCell;
}
HitTestPreview SampleHandle::Preview
(const TrackPanelMouseEvent &evt, const AudacityProject *pProject)
{
return HitPreview(evt.event, pProject, false);
}
UIHandle::Result SampleHandle::Release
(const TrackPanelMouseEvent &, AudacityProject *pProject,
wxWindow *)
{
const bool unsafe = pProject->IsAudioActive();
if (unsafe)
return this->Cancel(pProject);
//*************************************************
//*** UP-CLICK (Finish drawing) ***
//*************************************************
//On up-click, send the state to the undo stack
mClickedTrack = nullptr; //Set this to NULL so it will catch improper drag events.
pProject->PushState(_("Moved Samples"),
_("Sample Edit"),
UndoPush::CONSOLIDATE | UndoPush::AUTOSAVE);
// No change to draw since last drag
return RefreshCode::RefreshNone;
}
UIHandle::Result SampleHandle::Cancel(AudacityProject *pProject)
{
pProject->RollbackState();
mClickedTrack = nullptr;
return RefreshCode::RefreshCell;
}
float SampleHandle::FindSampleEditingLevel
(const wxMouseEvent &event, const ViewInfo &, double t0)
{
// Calculate where the mouse is located vertically (between +/- 1)
float zoomMin, zoomMax;
mClickedTrack->GetDisplayBounds(&zoomMin, &zoomMax);
const int yy = event.m_y - mRect.y;
const int height = mRect.GetHeight();
const bool dB = !mClickedTrack->GetWaveformSettings().isLinear();
float newLevel =
::ValueOfPixel(yy, height, false, dB,
mClickedTrack->GetWaveformSettings().dBRange, zoomMin, zoomMax);
//Take the envelope into account
Envelope *const env = mClickedTrack->GetEnvelopeAtX(event.m_x);
if (env)
{
// Calculate sample as it would be rendered, so quantize time
double envValue = env->GetValue( t0, 1.0 / mClickedTrack->GetRate());
if (envValue > 0)
newLevel /= envValue;
else
newLevel = 0;
//Make sure the NEW level is between +/-1
newLevel = std::max(-1.0f, std::min(1.0f, newLevel));
}
return newLevel;
}

View File

@ -0,0 +1,74 @@
/**********************************************************************
Audacity: A Digital Audio Editor
SampleHandle.h
Paul Licameli
**********************************************************************/
#ifndef __AUDACITY_SAMPLE_HANDLE__
#define __AUDACITY_SAMPLE_HANDLE__
#include "../../../../UIHandle.h"
#include "audacity/Types.h"
class wxMouseEvent;
#include <wx/gdicmn.h>
struct HitTestResult;
class Track;
class ViewInfo;
class WaveTrack;
class SampleHandle final : public UIHandle
{
SampleHandle();
SampleHandle(const SampleHandle&) = delete;
SampleHandle &operator=(const SampleHandle&) = delete;
static SampleHandle& Instance();
static HitTestPreview HitPreview
(const wxMouseEvent &event, const AudacityProject *pProject, bool unsafe);
public:
static HitTestResult HitAnywhere
(const wxMouseEvent &event, const AudacityProject *pProject);
static HitTestResult HitTest
(const wxMouseEvent &event, const wxRect &rect,
const AudacityProject *pProject, Track *pTrack);
virtual ~SampleHandle();
Result Click
(const TrackPanelMouseEvent &event, AudacityProject *pProject) override;
Result Drag
(const TrackPanelMouseEvent &event, AudacityProject *pProject) override;
HitTestPreview Preview
(const TrackPanelMouseEvent &event, const AudacityProject *pProject)
override;
Result Release
(const TrackPanelMouseEvent &event, AudacityProject *pProject,
wxWindow *pParent) override;
Result Cancel(AudacityProject *pProject) override;
bool StopsOnKeystroke() override { return true; }
private:
float FindSampleEditingLevel
(const wxMouseEvent &event, const ViewInfo &viewInfo, double t0);
WaveTrack *mClickedTrack{};
wxRect mRect{};
sampleCount mClickedStartSample{};
sampleCount mLastDragSample{};
float mLastDragSampleValue{};
bool mAltKey{};
};
#endif

View File

@ -13,12 +13,28 @@ Paul Licameli split from TrackPanel.cpp
#include "WaveTrackVRulerControls.h"
#include "../../../../HitTestResult.h"
#include "../../../../Project.h"
#include "../../../../TrackPanelMouseEvent.h"
#include "../../../../toolbars/ToolsToolBar.h"
#include "SampleHandle.h"
HitTestResult WaveTrack::HitTest
(const TrackPanelMouseEvent &event,
const AudacityProject *pProject)
{
return Track::HitTest(event, pProject);
HitTestResult result = Track::HitTest(event, pProject);
if (result.preview.cursor)
return result;
const ToolsToolBar *const pTtb = pProject->GetToolsToolBar();
if (pTtb->IsDown(multiTool)) {
if (NULL != (result =
SampleHandle::HitTest(event.event, event.rect, pProject, this)).preview.cursor)
;
}
return result;
}
TrackControls *WaveTrack::GetControls()

View File

@ -17,6 +17,7 @@ Paul Licameli split from TrackPanel.cpp
#include "../../Project.h"
#include "../../toolbars/ToolsToolBar.h"
#include "../playabletrack/wavetrack/ui/SampleHandle.h"
#include "ZoomHandle.h"
HitTestResult Track::HitTest
@ -28,12 +29,13 @@ HitTestResult Track::HitTest
const bool isMultiTool = pTtb->IsDown(multiTool);
if (!isMultiTool) {
switch (pTtb->GetCurrentTool()) {
case drawTool:
return SampleHandle::HitAnywhere(event.event, pProject);
case zoomTool:
return ZoomHandle::HitAnywhere(event.event, pProject);
case selectTool:
case envelopeTool:
case drawTool:
case slideTool:
default:
// cases not yet implemented

View File

@ -1,4 +1,4 @@
<?xml version="1.0" encoding="utf-8"?>
<?xml version="1.0" encoding="utf-8"?>
<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<ItemGroup Label="ProjectConfigurations">
<ProjectConfiguration Include="Debug|Win32">
@ -230,6 +230,7 @@
<ClCompile Include="..\..\..\src\tracks\playabletrack\notetrack\ui\NoteTrackControls.cpp" />
<ClCompile Include="..\..\..\src\tracks\playabletrack\notetrack\ui\NoteTrackUI.cpp" />
<ClCompile Include="..\..\..\src\tracks\playabletrack\notetrack\ui\NoteTrackVRulerControls.cpp" />
<ClCompile Include="..\..\..\src\tracks\playabletrack\wavetrack\ui\SampleHandle.cpp" />
<ClCompile Include="..\..\..\src\tracks\playabletrack\wavetrack\ui\WaveTrackControls.cpp" />
<ClCompile Include="..\..\..\src\tracks\playabletrack\wavetrack\ui\WaveTrackUI.cpp" />
<ClCompile Include="..\..\..\src\tracks\playabletrack\wavetrack\ui\WaveTrackVRulerControls.cpp" />
@ -490,6 +491,7 @@
<ClInclude Include="..\..\..\src\TrackPanelMouseEvent.h" />
<ClInclude Include="..\..\..\src\tracks\playabletrack\notetrack\ui\NoteTrackControls.h" />
<ClInclude Include="..\..\..\src\tracks\playabletrack\notetrack\ui\NoteTrackVRulerControls.h" />
<ClInclude Include="..\..\..\src\tracks\playabletrack\wavetrack\ui\SampleHandle.h" />
<ClInclude Include="..\..\..\src\tracks\playabletrack\wavetrack\ui\WaveTrackControls.h" />
<ClInclude Include="..\..\..\src\tracks\playabletrack\wavetrack\ui\WaveTrackVRulerControls.h" />
<ClInclude Include="..\..\..\src\tracks\ui\CommonTrackPanelCell.h" />
@ -1173,4 +1175,4 @@
<ImportGroup Label="ExtensionTargets">
<Import Project="..\..\ny.targets" />
</ImportGroup>
</Project>
</Project>

View File

@ -1,4 +1,4 @@
<?xml version="1.0" encoding="utf-8"?>
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<ItemGroup>
<Filter Include="src">
@ -992,6 +992,9 @@
<ClCompile Include="..\..\..\src\widgets\PopupMenuTable.cpp">
<Filter>src\widgets</Filter>
</ClCompile>
<ClCompile Include="..\..\..\src\tracks\playabletrack\wavetrack\ui\SampleHandle.cpp">
<Filter>src\tracks\playabletrack\wavetrack\ui</Filter>
</ClCompile>
</ItemGroup>
<ItemGroup>
<ClInclude Include="..\..\..\src\AboutDialog.h">
@ -1978,6 +1981,9 @@
<ClInclude Include="..\..\..\src\widgets\PopupMenuTable.h">
<Filter>src\widgets</Filter>
</ClInclude>
<ClInclude Include="..\..\..\src\tracks\playabletrack\wavetrack\ui\SampleHandle.h">
<Filter>src\tracks\playabletrack\wavetrack\ui</Filter>
</ClInclude>
</ItemGroup>
<ItemGroup>
<Image Include="..\..\audacity.ico">
@ -2201,4 +2207,4 @@
<Filter>plug-ins</Filter>
</copy>
</ItemGroup>
</Project>
</Project>