GetTracksUsableArea() out of TrackPanel

src/AdornedRulerPanel.cpp

@@ -535,20 +535,16 @@ namespace
 
 wxCoord GetPlayHeadX( const AudacityProject *pProject )
 {
-   const auto &tp = TrackPanel::Get( *pProject );
    const auto &viewInfo = ViewInfo::Get( *pProject );
-   int width;
-   tp.GetTracksUsableArea(&width, NULL);
+   auto width = viewInfo.GetTracksUsableWidth();
    return viewInfo.GetLeftOffset()
       + width * TracksPrefs::GetPinnedHeadPositionPreference();
 }
 
 double GetPlayHeadFraction( const AudacityProject *pProject, wxCoord xx )
 {
-   const auto &tp = TrackPanel::Get( *pProject );
    const auto &viewInfo = ViewInfo::Get( *pProject );
-   int width;
-   tp.GetTracksUsableArea(&width, NULL);
+   auto width = viewInfo.GetTracksUsableWidth();
    auto fraction = (xx - viewInfo.GetLeftOffset()) / double(width);
    return std::max(0.0, std::min(1.0, fraction));
 }
@@ -1711,10 +1707,8 @@ void AdornedRulerPanel::OnTogglePinnedState(wxCommandEvent & /*event*/)
 void AdornedRulerPanel::UpdateQuickPlayPos(wxCoord &mousePosX, bool shiftDown)
 {
    // Keep Quick-Play within usable track area.
-   const auto &tp = TrackPanel::Get( *mProject );
    const auto &viewInfo = ViewInfo::Get( *mProject );
-   int width;
-   tp.GetTracksUsableArea(&width, NULL);
+   auto width = viewInfo.GetTracksUsableWidth();
    mousePosX = std::max(mousePosX, viewInfo.GetLeftOffset());
    mousePosX = std::min(mousePosX, viewInfo.GetLeftOffset() + width - 1);
 

src/ProjectWindow.cpp

@@ -1144,8 +1144,8 @@ void ProjectWindow::FixScrollbars()
 
    int totalHeight = TrackView::GetTotalHeight( tracks ) + 32;
 
-   int panelWidth, panelHeight;
-   trackPanel.GetTracksUsableArea(&panelWidth, &panelHeight);
+   auto panelWidth = viewInfo.GetTracksUsableWidth();
+   auto panelHeight = viewInfo.GetHeight();
 
    // (From Debian...at least I think this is the change cooresponding
    // to this comment)
@@ -1469,8 +1469,7 @@ void ProjectWindow::DoScroll()
    auto &viewInfo = ViewInfo::Get( project );
    const double lowerBound = ScrollingLowerBoundTime();
 
-   int width;
-   trackPanel.GetTracksUsableArea(&width, NULL);
+   auto width = viewInfo.GetTracksUsableWidth();
    viewInfo.SetBeforeScreenWidth(viewInfo.sbarH, width, lowerBound);
 
 
@@ -1770,8 +1769,7 @@ void ProjectWindow::PlaybackScroller::OnTimer(wxCommandEvent &event)
       auto &viewInfo = ViewInfo::Get( *mProject );
       auto &trackPanel = TrackPanel::Get( *mProject );
       const int posX = viewInfo.TimeToPosition(viewInfo.mRecentStreamTime);
-      int width;
-      trackPanel.GetTracksUsableArea(&width, NULL);
+      auto width = viewInfo.GetTracksUsableWidth();
       int deltaX;
       switch (mMode)
       {
@@ -1899,7 +1897,6 @@ double ProjectWindow::GetZoomOfToFit() const
    auto &project = mProject;
    auto &tracks = TrackList::Get( project );
    auto &viewInfo = ViewInfo::Get( project );
-   auto &trackPanel = TrackPanel::Get( project );
 
    const double end = tracks.GetEndTime();
    const double start = viewInfo.bScrollBeyondZero
@@ -1910,8 +1907,7 @@ double ProjectWindow::GetZoomOfToFit() const
    if (len <= 0.0)
       return viewInfo.GetZoom();
 
-   int w;
-   trackPanel.GetTracksUsableArea(&w, NULL);
+   auto w = viewInfo.GetTracksUsableWidth();
    w -= 10;
    return w/len;
 }

src/TrackPanel.cpp

@@ -345,25 +345,6 @@ void TrackPanel::UpdatePrefs()
    Refresh();
 }
 
-wxSize TrackPanel::GetTracksUsableArea() const
-{
-   auto size = GetSize();
-   return {
-      std::max( 0,
-         size.GetWidth() - ( mViewInfo->GetLeftOffset() + kRightMargin ) ),
-      size.GetHeight()
-   };
-}
-
-void TrackPanel::GetTracksUsableArea(int *width, int *height) const
-{
-   auto size = GetTracksUsableArea();
-   if (width)
-      *width = size.GetWidth();
-   if (height)
-      *height = size.GetHeight();
-}
-
 /// Gets the pointer to the AudacityProject that
 /// goes with this track panel.
 AudacityProject * TrackPanel::GetProject() const
@@ -519,8 +500,7 @@ void TrackPanel::OnProjectSettingsChange( wxCommandEvent &event )
 
 double TrackPanel::GetScreenEndTime() const
 {
-   int width;
-   GetTracksUsableArea(&width, NULL);
+   auto width = mViewInfo->GetTracksUsableWidth();
    return mViewInfo->PositionToTime(width, 0, true);
 }
 
@@ -1302,8 +1282,7 @@ void TrackPanel::UpdateVRulerSize()
 // Make sure selection edge is in view
 void TrackPanel::ScrollIntoView(double pos)
 {
-   int w;
-   GetTracksUsableArea( &w, NULL );
+   auto w = mViewInfo->GetTracksUsableWidth();
 
    int pixel = mViewInfo->TimeToPosition(pos);
    if (pixel < 0 || pixel >= w)
@@ -1758,7 +1737,10 @@ unsigned TrackPanelCell::Char(wxKeyEvent &event, ViewInfo &, wxWindow *)
 IsVisibleTrack::IsVisibleTrack(AudacityProject *project)
    : mPanelRect {
         wxPoint{ 0, ViewInfo::Get( *project ).vpos },
-        TrackPanel::Get( *project ).GetTracksUsableArea()
+        wxSize{
+           ViewInfo::Get( *project ).GetTracksUsableWidth(),
+           ViewInfo::Get( *project ).GetHeight()
+        }
      }
 {}
 

src/TrackPanel.h

@@ -103,12 +103,6 @@ class AUDACITY_DLL_API TrackPanel final
    void OnProjectSettingsChange(wxCommandEvent &event);
    void OnTrackFocusChange( wxCommandEvent &event );
 
-   wxSize GetTracksUsableArea() const;
-
-   // Width and height, relative to upper left corner at (GetLeftOffset(), 0)
-   // Either argument may be NULL
-   void GetTracksUsableArea(int *width, int *height) const;
-
    void OnUndoReset( wxCommandEvent &event );
 
    void Refresh

src/ZoomInfo.h

@@ -101,6 +101,12 @@ public:
    int GetLabelWidth() const { return GetVRulerOffset() + GetVRulerWidth(); }
    int GetLeftOffset() const { return GetLabelWidth() + 1;}
 
+   int GetTracksUsableWidth() const
+   {
+      return
+         std::max( 0, GetWidth() - ( GetLeftOffset() + kRightMargin ) );
+   }
+
    bool ZoomInAvailable() const;
    bool ZoomOutAvailable() const;
 

src/menus/ViewMenus.cpp

@@ -53,7 +53,6 @@ AudacityProject::AttachedWindows::RegisteredFactory sLyricsWindowKey{
 double GetZoomOfSelection( const AudacityProject &project )
 {
    auto &viewInfo = ViewInfo::Get( project );
-   auto &trackPanel = TrackPanel::Get( project );
    auto &window = ProjectWindow::Get( project );
 
    const double lowerBound =
@@ -74,8 +73,7 @@ double GetZoomOfSelection( const AudacityProject &project )
    //      Fixes might have resulted from commits
    //      1b8f44d0537d987c59653b11ed75a842b48896ea and
    //      e7c7bb84a966c3b3cc4b3a9717d5f247f25e7296
-   int width;
-   trackPanel.GetTracksUsableArea(&width, NULL);
+   auto width = viewInfo.GetTracksUsableWidth();
    return (width - 1) / denom;
 }
 
@@ -149,7 +147,7 @@ double GetZoomOfPreset( const AudacityProject &project, int preset )
 namespace {
 void DoZoomFitV(AudacityProject &project)
 {
-   auto &trackPanel = TrackPanel::Get( project );
+   auto &viewInfo = ViewInfo::Get( project );
    auto &tracks = TrackList::Get( project );
 
    // Only nonminimized audio tracks will be resized
@@ -161,8 +159,7 @@ void DoZoomFitV(AudacityProject &project)
       return;
 
    // Find total height to apportion
-   int height;
-   trackPanel.GetTracksUsableArea(NULL, &height);
+   auto height = viewInfo.GetHeight();
    height -= 28;
    
    // The height of minimized and non-audio tracks cannot be apportioned

src/tracks/ui/PlayIndicatorOverlay.cpp

@@ -150,8 +150,7 @@ void PlayIndicatorOverlay::OnTimer(wxCommandEvent &event)
 
    auto &trackPanel = TrackPanel::Get( *mProject );
    const auto &viewInfo = ViewInfo::Get( *mProject );
-   int width;
-   trackPanel.GetTracksUsableArea(&width, nullptr);
+   auto width = viewInfo.GetTracksUsableWidth();
 
    if (!ProjectAudioIO::Get( *mProject ).IsAudioActive()) {
       mNewIndicatorX = -1;

src/tracks/ui/Scrubbing.cpp

@@ -611,8 +611,7 @@ void Scrubber::ContinueScrubbingPoll()
             // toward the mouse position, then move the target time to a more
             // extreme position to avoid catching-up and halting before the
             // screen scrolls.
-            int width;
-            trackPanel.GetTracksUsableArea(&width, NULL);
+            auto width = viewInfo.GetTracksUsableWidth();
             auto delta = xx - origin;
             if (delta < 0)
                delta -= width;
@@ -1077,8 +1076,7 @@ void Scrubber::DoScrub(bool seek)
       wxCoord xx = tp.ScreenToClient(::wxGetMouseState().GetPosition()).x;
 
       // Limit x
-      int width;
-      tp.GetTracksUsableArea(&width, nullptr);
+      auto width = viewInfo.GetTracksUsableWidth();
       const auto offset = viewInfo.GetLeftOffset();
       xx = (std::max(offset, std::min(offset + width - 1, xx)));