void Envelope::Draw(wxDC & dc, const wxRect & r, double h, double pps, bool dB,
float zoomMin, float zoomMax)
{
h -= mOffset;
double tright = h + (r.width / pps);
double dBr = gPrefs->Read(wxT("/GUI/EnvdBRange"), ENV_DB_RANGE);
dc.SetPen(AColor::envelopePen);
dc.SetBrush(*wxWHITE_BRUSH);
for (int i = 0; i < (int)mEnv.Count(); i++) {
if (mEnv[i]->t >= h && mEnv[i]->t <= tright) {
if (i == mDragPoint) {
dc.SetPen(AColor::envelopePen);
dc.SetBrush(AColor::envelopeBrush);
}
double v = mEnv[i]->val;
int x = int ((mEnv[i]->t - h) * pps);
int y, y2;
y = GetWaveYPos(v, zoomMin, zoomMax, r.height, dB,
true, dBr, false);
if (!mMirror) {
DrawPoint(dc, r, x, y, true);
}
else {
y2 = GetWaveYPos(-v-.000000001, zoomMin, zoomMax, r.height, dB,
true, dBr, false);
// This follows the same logic as the envelop drawing in
// TrackArtist::DrawEnvelope().
if (y2 - y < 9) {
int value = (int)((zoomMax / (zoomMax - zoomMin)) * r.height);
y = value - 4;
y2 = value + 4;
}
DrawPoint(dc, r, x, y, true);
DrawPoint(dc, r, x, y2, false);
// Contour
y = GetWaveYPos(v, zoomMin, zoomMax, r.height, dB,
false, dBr, false);
y2 = GetWaveYPos(-v-.000000001, zoomMin, zoomMax, r.height, dB,
false, dBr, false);
if (y <= y2) {
DrawPoint(dc, r, x, y, true);
DrawPoint(dc, r, x, y2, false);
}
}
if (i == mDragPoint) {
dc.SetPen(AColor::envelopePen);
dc.SetBrush(*wxWHITE_BRUSH);
}
}
}
}
/// HandleMouseButtonDown either finds an existing control point or adds a new one
/// which is then recorded as the point to drag.
/// This is slightly complicated by there possibly being four control points for
/// a given time value:
/// We have an upper and lower envelope line.
/// Also we may be showing an inner envelope (at 0.5 the range).
bool Envelope::HandleMouseButtonDown(wxMouseEvent & event, wxRect & r,
double h, double pps, bool dB,
float zoomMin, float zoomMax)
{
int ctr = (int)(r.height * zoomMax / (zoomMax - zoomMin));
bool upper = !mMirror || (zoomMin >= 0.0) || (event.m_y - r.y < ctr);
int clip_y = event.m_y - r.y;
if(clip_y < 0) clip_y = 0; //keeps point in rect r, even if mouse isn't
if(clip_y > r.GetBottom()) clip_y = r.GetBottom();
double tleft = h - mOffset;
double tright = tleft + (r.width / pps);
int bestNum = -1;
int bestDist = 10; // Must be within 10 pixel radius.
// TODO: Cache the gPrefs value. Reading it every time is inefficient.
double dBr = gPrefs->Read(wxT("/GUI/EnvdBRange"), ENV_DB_RANGE);
// Member variables hold state that will be needed in dragging.
mButton = event.GetButton();
mIsDeleting = false;
mContourOffset = false;
// wxLogDebug(wxT("Y:%i Height:%i Offset:%i"), y, height, mContourOffset );
int len = mEnv.Count();
// TODO: extract this into a function FindNearestControlPoint()
// TODO: also fix it so that we can drag the last point on an envelope.
for (int i = 0; i < len; i++) { //search for control point nearest click
if (mEnv[i]->GetT() >= tleft && mEnv[i]->GetT() <= tright) {
int x = int ((mEnv[i]->GetT() + mOffset - h) * pps) + r.x;
int y[4];
int numControlPoints;
// Outer control points
y[0] = GetWaveYPos( mEnv[i]->GetVal(), zoomMin, zoomMax, r.height,
dB, true, dBr, false);
y[1] = GetWaveYPos( -mEnv[i]->GetVal(), zoomMin, zoomMax, r.height,
dB, true, dBr, false);
// Inner control points(contour)
y[2] = GetWaveYPos( mEnv[i]->GetVal(), zoomMin, zoomMax, r.height,
dB, false, dBr, false);
y[3] = GetWaveYPos( -mEnv[i]->GetVal()-.00000001, zoomMin, zoomMax,
r.height, dB, false, dBr, false);
numControlPoints = 4;
if (y[2] > y[3])
numControlPoints = 2;
if (!mMirror)
numControlPoints = 1;
for(int j=0; j<numControlPoints; j++){
int d = (int)(sqrt((double)(SQR(x-event.m_x) + SQR(y[j]-(event.m_y-r.y)))) + 0.5);
if (d < bestDist) {
bestNum = i;
bestDist = d;
mContourOffset = (bool)(j > 1);
}
}
}
}
if (bestNum >= 0) {
mDragPoint = bestNum;
}
else {
// TODO: Extract this into a function CreateNewPoint
double when = h + (event.m_x - r.x) / pps - mOffset;
// if (when <= 0 || when >= mTrackLen)
// return false;
double v = GetValueAtX( event.m_x, r, h, pps );
int ct = GetWaveYPos( v, zoomMin, zoomMax, r.height, dB,
false, dBr, false) ;
int cb = GetWaveYPos( -v-.000000001, zoomMin, zoomMax, r.height, dB,
false, dBr, false) ;
if( ct <= cb || !mMirror ){
int t = GetWaveYPos( v, zoomMin, zoomMax, r.height, dB,
true, dBr, false) ;
int b = GetWaveYPos( -v, zoomMin, zoomMax, r.height, dB,
true, dBr, false) ;
ct = (t + ct) / 2;
cb = (b + cb) / 2;
if(mMirror &&
(event.m_y - r.y) > ct &&
((event.m_y - r.y) < cb))
mContourOffset = true;
else
mContourOffset = false;
}
double newVal = ValueOfPixel(clip_y, r.height, upper, dB,
zoomMin, zoomMax);
mDragPoint = Insert(when, newVal);
mDirty = true;
}
mUpper = upper;
mInitialWhen = mEnv[mDragPoint]->GetT();
mInitialVal = mEnv[mDragPoint]->GetVal();
mInitialX = event.m_x;
mInitialY = event.m_y+mContourOffset;
return true;
}
/// TODO: This should probably move to track artist.
void Envelope::DrawPoints(wxDC & dc, const wxRect & r, double h, double pps, bool dB,
float zoomMin, float zoomMax)
{
h -= mOffset;
wxASSERT( pps > 0 );
double tright = h + (r.width / pps);
// TODO: Cache the gPrefs value. Reading it every time is inefficient.
double dBRange = gPrefs->Read(wxT("/GUI/EnvdBRange"), ENV_DB_RANGE);
dc.SetPen(AColor::envelopePen);
dc.SetBrush(*wxWHITE_BRUSH);
for (int i = 0; i < (int)mEnv.Count(); i++) {
if (mEnv[i]->GetT() >= h && mEnv[i]->GetT() <= tright) {
// Change colour if this is the draggable point...
if (i == mDragPoint) {
dc.SetPen(AColor::envelopePen);
dc.SetBrush(AColor::envelopeBrush);
}
double v = mEnv[i]->GetVal();
int x = int ((mEnv[i]->GetT() - h) * pps);
int y, y2;
y = GetWaveYPos(v, zoomMin, zoomMax, r.height, dB,
true, dBRange, false);
if (!mMirror) {
DrawPoint(dc, r, x, y, true);
}
else {
y2 = GetWaveYPos(-v-.000000001, zoomMin, zoomMax, r.height, dB,
true, dBRange, false);
// This follows the same logic as the envelop drawing in
// TrackArtist::DrawEnvelope().
// TODO: make this calculation into a reusable function.
if (y2 - y < 9) {
int value = (int)((zoomMax / (zoomMax - zoomMin)) * r.height);
y = value - 4;
y2 = value + 4;
}
DrawPoint(dc, r, x, y, true);
DrawPoint(dc, r, x, y2, false);
// Contour
y = GetWaveYPos(v, zoomMin, zoomMax, r.height, dB,
false, dBRange, false);
y2 = GetWaveYPos(-v-.000000001, zoomMin, zoomMax, r.height, dB,
false, dBRange, false);
if (y <= y2) {
DrawPoint(dc, r, x, y, true);
DrawPoint(dc, r, x, y2, false);
}
}
// Change colour back again if was the draggable point.
if (i == mDragPoint) {
dc.SetPen(AColor::envelopePen);
dc.SetBrush(*wxWHITE_BRUSH);
}
}
}
}
bool Envelope::HandleMouseButtonDown(wxMouseEvent & event, wxRect & r,
double h, double pps, bool dB,
float zoomMin, float zoomMax, float eMin, float eMax)
{
bool upper;
int ctr = (int)(r.height * zoomMax / (zoomMax - zoomMin));
upper = (event.m_y - r.y < ctr);
if(zoomMin == eMin)
upper = true;
mButton = event.GetButton();
int clip_y = event.m_y - r.y;
if(clip_y < 0) clip_y = 0; //keeps point in rect r, even if mouse isn't
if(clip_y > r.height) clip_y = r.height;
mIsDeleting = false;
double tleft = h - mOffset;
double tright = tleft + (r.width / pps);
int bestNum = -1;
int bestDist = 10; // Must be within 10 pixel radius.
double dBr = gPrefs->Read(wxT("/GUI/EnvdBRange"), ENV_DB_RANGE);
mContourOffset = false;
// wxLogDebug(wxT("Y:%i Height:%i Offset:%i"), y, height, mContourOffset );
int len = mEnv.Count();
for (int i = 0; i < len; i++) { //search for control point nearest click
if (mEnv[i]->t >= tleft && mEnv[i]->t <= tright) {
int x = int ((mEnv[i]->t + mOffset - h) * pps) + r.x;
int y[4];
int numControlPoints;
// Outer control points
y[0] = GetWaveYPos( mEnv[i]->val, zoomMin, zoomMax, r.height,
dB, true, dBr, false);
y[1] = GetWaveYPos( -mEnv[i]->val, zoomMin, zoomMax, r.height,
dB, true, dBr, false);
// Inner control points(contour)
y[2] = GetWaveYPos( mEnv[i]->val, zoomMin, zoomMax, r.height,
dB, false, dBr, false);
y[3] = GetWaveYPos( -mEnv[i]->val-.00000001, zoomMin, zoomMax,
r.height, dB, false, dBr, false);
numControlPoints = 4;
if (y[2] > y[3])
numControlPoints = 2;
if (!mMirror)
numControlPoints = 1;
for(int j=0; j<numControlPoints; j++) {
int d = (int)(sqrt((double)(SQR(x-event.m_x) + SQR(y[j]-(event.m_y-r.y)))) + 0.5);
if (d < bestDist) {
bestNum = i;
bestDist = d;
mContourOffset = (bool)(j > 1);
}
}
}
}
if (bestNum >= 0) {
mDragPoint = bestNum;
}
else {
// Create new point
double when = h + (event.m_x - r.x) / pps - mOffset;
// if (when <= 0 || when >= mTrackLen)
// return false;
double v = GetValueAtX( event.m_x, r, h, pps );
int ct = GetWaveYPos( v, zoomMin, zoomMax, r.height, dB,
false, dBr, false) ;
int cb = GetWaveYPos( -v-.000000001, zoomMin, zoomMax, r.height, dB,
false, dBr, false) ;
if( ct <= cb || !mMirror ) {
int t = GetWaveYPos( v, zoomMin, zoomMax, r.height, dB,
true, dBr, false) ;
int b = GetWaveYPos( -v, zoomMin, zoomMax, r.height, dB,
true, dBr, false) ;
ct = (t + ct) / 2;
cb = (b + cb) / 2;
if(mMirror &&
(event.m_y - r.y) > ct &&
((event.m_y - r.y) < cb))
mContourOffset = true;
else
mContourOffset = false;
}
double newVal = ValueOfPixel(clip_y, r.height, upper, dB,
zoomMin, zoomMax, eMin);
//float MaxAmplify = ( mContourOffset ) ? 1.4 : 1.0;
if(newVal > eMax)
newVal = eMax;
mDragPoint = Insert(when, newVal);
mDirty = true;
}
mUpper = upper;
mInitialWhen = mEnv[mDragPoint]->t;
mInitialVal = mEnv[mDragPoint]->val;
mInitialX = event.m_x;
mInitialY = event.m_y+mContourOffset;
return true;
}
