Highlighting of resizers

src/TrackPanel.cpp

@@ -1648,12 +1648,14 @@ void TrackPanel::RefreshTrack(Track *trk, bool refreshbacking)
       link = trk->GetLink();
    }
 
-   // subtract insets and shadows from the rectangle, but not border
-   // This matters because some separators do paint over the border
-   wxRect rect(kLeftInset,
+   // So that the highlighting of the resizer refreshes,
+   // include left and right inset areas,
+   // exclude the inset above,
+   // but include the inset below.
+   wxRect rect(0,
             -mViewInfo->vpos + trk->GetY() + kTopInset,
-            GetRect().GetWidth() - kLeftInset - kRightInset - kShadowThickness,
-            trk->GetHeight() - kTopInset - kShadowThickness);
+            GetRect().GetWidth(),
+            trk->GetHeight() );
 
    if (link) {
       rect.height += link->GetHeight();
@@ -1749,7 +1751,8 @@ void TrackPanel::DrawEverythingElse(TrackPanelDrawingContext &context,
    trackRect.height = 0;   // for drawing background in no tracks case.
 
    VisibleTrackIterator iter(GetProject());
-   for (Track *t = iter.First(); t; t = iter.Next()) {
+   Track *prev{};
+   for (Track *t = iter.First(); t; prev = t, t = iter.Next()) {
       trackRect.y = t->GetY() - mViewInfo->vpos;
       trackRect.height = t->GetHeight();
 
@@ -1793,7 +1796,7 @@ void TrackPanel::DrawEverythingElse(TrackPanelDrawingContext &context,
          if (mAx->IsFocused(t)) {
             focusRect = borderRect;
          }
-         DrawOutside(context, borderTrack, borderRect);
+         DrawOutside(context, borderTrack, prev, borderRect);
       }
 
       // Believe it or not, we can speed up redrawing if we don't
@@ -1835,7 +1838,7 @@ void TrackPanel::DrawEverythingElse(TrackPanelDrawingContext &context,
       mUIHandle->DrawExtras(UIHandle::Cells, dc, region, clip);
 
    // Paint over the part below the tracks
-   trackRect.y += trackRect.height;
+   trackRect.y += trackRect.height + kTopInset;
    if (trackRect.y < clip.GetBottom()) {
       AColor::TrackPanelBackground(dc, false);
       dc->DrawRectangle(trackRect.x,
@@ -2291,7 +2294,7 @@ void TrackInfo::Status2DrawFunction
 
 void TrackPanel::DrawOutside
 (TrackPanelDrawingContext &context,
- Track * t, const wxRect & rec)
+ Track * t, Track *prev, const wxRect & rec)
 {
    auto dc = &context.dc;
    bool bIsWave = (t->GetKind() == Track::Wave);
@@ -2300,7 +2303,7 @@ void TrackPanel::DrawOutside
    {
       // Start with whole track rect
       wxRect rect = rec;
-      DrawOutsideOfTrack(context, t, rect);
+      DrawOutsideOfTrack(context, t, prev, rect);
 
       // Now exclude left, right, and top insets
       rect.x += kLeftInset;
@@ -2342,7 +2345,7 @@ void TrackPanel::DrawOutside
 // If linked to a following channel, also paint the separator area, which
 // overlaps the next track rectangle's top
 void TrackPanel::DrawOutsideOfTrack
-(TrackPanelDrawingContext &context, Track * t, const wxRect & rect)
+(TrackPanelDrawingContext &context, Track * t, Track *prev, const wxRect & rect)
 {
    auto dc = &context.dc;
 
@@ -2355,10 +2358,13 @@ void TrackPanel::DrawOutsideOfTrack
    side.width = kLeftInset;
    dc->DrawRectangle(side);
 
-   // Area between panel border and top track border
-   side = rect;
-   side.height = kTopInset;
-   dc->DrawRectangle(side);
+   if (!prev)
+   {
+      // Area above the first track
+      side = rect;
+      side.height = kTopInset;
+      dc->DrawRectangle(side);
+   }
 
    // Area between panel border and right track border
    side = rect;
@@ -2366,17 +2372,32 @@ void TrackPanel::DrawOutsideOfTrack
    side.width = kTopInset;
    dc->DrawRectangle(side);
 
-   // Area between tracks of stereo group
-   if (t->GetLinked()
+   auto target = dynamic_cast<TrackPanelResizeHandle*>(context.target.get());
+   auto highlight = target && target->GetTrack().get() == t;
+
+   side = rect;
+   side.y += t->GetHeight();
+
+   // Area below the track
+   if (highlight ||
+       t->GetLinked()
 #ifdef EXPERIMENTAL_OUTPUT_DISPLAY
        || MONO_WAVE_PAN(t)
 #endif
        ) {
       // Paint the channel separator over (what would be) the shadow of the top
       // channel, and the top inset of the bottom channel
-      side = rect;
-      side.y += t->GetHeight() - kShadowThickness;
+
+      // (Or, highlight the resizer area below the track)
+      side.y -= kShadowThickness;
       side.height = kTopInset + kShadowThickness;
+      if (highlight)
+         dc->SetBrush( AColor::uglyBrush );
+      dc->DrawRectangle(side);
+   }
+   else
+   {
+      side.height = kTopInset;
       dc->DrawRectangle(side);
    }
 }

src/TrackPanel.h

@@ -417,14 +417,14 @@ protected:
                            const wxRect & clip);
    void DrawOutside
       (TrackPanelDrawingContext &context,
-       Track *t, const wxRect & rec);
+       Track *t, Track *prev, const wxRect & rec);
 
    void HighlightFocusedTrack (wxDC* dc, const wxRect &rect);
    void DrawShadow            (Track *t, wxDC* dc, const wxRect & rect);
    void DrawBordersAroundTrack(Track *t, wxDC* dc, const wxRect & rect, const int labelw, const int vrul);
    void DrawOutsideOfTrack
       (TrackPanelDrawingContext &context,
-       Track *t, const wxRect & rect);
+       Track *t, Track *prev, const wxRect & rect);
 
 public:
    // Set the object that performs catch-all event handling when the pointer

src/TrackPanelResizeHandle.cpp

@@ -67,6 +67,8 @@ TrackPanelResizeHandle::TrackPanelResizeHandle
    : mpTrack{ track }
    , mMouseClickY( y )
 {
+   mChangeHighlight = RefreshCode::RefreshCell;
+
 #ifdef EXPERIMENTAL_OUTPUT_DISPLAY
    if (MONO_WAVE_PAN(track)){
       //STM:  Determine whether we should rescale one or two tracks