Ruler::TickSizes Struct Reference

Public Member Functions
	TickSizes (double UPP, int orientation, RulerFormat format, bool log)
TranslatableString	LabelString (double d, RulerFormat format, const TranslatableString &units) const

Public Attributes
bool	useMajor = true
double	mMajor
double	mMinor
int	mDigits

Detailed Description

Definition at line 357 of file Ruler.cpp.

Constructor & Destructor Documentation

TickSizes()

Ruler::TickSizes::TickSizes ( double  UPP, int  orientation, RulerFormat  format, bool  log  )

inline

Definition at line 366 of file Ruler.cpp.

{
   //TODO: better dynamic digit computation for the log case
   (void)log;
 
   // Given the dimensions of the ruler, the range of values it
   // has to display, and the format (i.e. Int, Real, Time),
   // figure out how many units are in one Minor tick, and
   // in one Major tick.
   //
   // The goal is to always put tick marks on nice round numbers
   // that are easy for humans to grok.  This is the most tricky
   // with time.
 
   double d;
 
   // As a heuristic, we want at least 22 pixels between each 
   // minor tick.  We want to show numbers like "-48"
   // in that space.
   // If vertical, we don't need as much space.
   double units = ((orientation == wxHORIZONTAL) ? 22 : 16) * fabs(UPP);
 
   mDigits = 0;
 
   switch(format) {
   case LinearDBFormat:
      if (units < 0.001) {
         mMinor = 0.001;
         mMajor = 0.005;
         return;
      }
      if (units < 0.01) {
         mMinor = 0.01;
         mMajor = 0.05;
         return;
      }
      if (units < 0.1) {
         mMinor = 0.1;
         mMajor = 0.5;
         return;
      }
      if (units < 1.0) {
         mMinor = 1.0;
         mMajor = 6.0;
         return;
      }
      if (units < 3.0) {
         mMinor = 3.0;
         mMajor = 12.0;
         return;
      }
      if (units < 6.0) {
         mMinor = 6.0;
         mMajor = 24.0;
         return;
      }
      if (units < 12.0) {
         mMinor = 12.0;
         mMajor = 48.0;
         return;
      }
      if (units < 24.0) {
         mMinor = 24.0;
         mMajor = 96.0;
         return;
      }
      d = 20.0;
      for(;;) {
         if (units < d) {
            mMinor = d;
            mMajor = d*5.0;
            return;
         }
         d *= 5.0;
         if (units < d) {
            mMinor = d;
            mMajor = d*5.0;
            return;
         }
         d *= 2.0;
      }
      break;
 
   case IntFormat:
      d = 1.0;
      for(;;) {
         if (units < d) {
            mMinor = d;
            mMajor = d*5.0;
            return;
         }
         d *= 5.0;
         if (units < d) {
            mMinor = d;
            mMajor = d*2.0;
            return;
         }
         d *= 2.0;
      }
      break;
 
   case TimeFormat:
      if (units > 0.5) {
         if (units < 1.0) { // 1 sec
            mMinor = 1.0;
            mMajor = 5.0;
            return;
         }
         if (units < 5.0) { // 5 sec
            mMinor = 5.0;
            mMajor = 15.0;
            return;
         }
         if (units < 10.0) {
            mMinor = 10.0;
            mMajor = 30.0;
            return;
         }
         if (units < 15.0) {
            mMinor = 15.0;
            mMajor = 60.0;
            return;
         }
         if (units < 30.0) {
            mMinor = 30.0;
            mMajor = 60.0;
            return;
         }
         if (units < 60.0) { // 1 min
            mMinor = 60.0;
            mMajor = 300.0;
            return;
         }
         if (units < 300.0) { // 5 min
            mMinor = 300.0;
            mMajor = 900.0;
            return;
         }
         if (units < 600.0) { // 10 min
            mMinor = 600.0;
            mMajor = 1800.0;
            return;
         }
         if (units < 900.0) { // 15 min
            mMinor = 900.0;
            mMajor = 3600.0;
            return;
         }
         if (units < 1800.0) { // 30 min
            mMinor = 1800.0;
            mMajor = 3600.0;
            return;
         }
         if (units < 3600.0) { // 1 hr
            mMinor = 3600.0;
            mMajor = 6*3600.0;
            return;
         }
         if (units < 6*3600.0) { // 6 hrs
            mMinor = 6*3600.0;
            mMajor = 24*3600.0;
            return;
         }
         if (units < 24*3600.0) { // 1 day
            mMinor = 24*3600.0;
            mMajor = 7*24*3600.0;
            return;
         }
 
         mMinor = 24.0 * 7.0 * 3600.0; // 1 week
         mMajor = 24.0 * 7.0 * 3600.0;
      }
 
      // Otherwise fall through to RealFormat
      // (fractions of a second should be dealt with
      // the same way as for RealFormat)
 
   case RealFormat:
      d = 0.000001;
      // mDigits is number of digits after the decimal point.
      mDigits = 6;
      for(;;) {
         if (units < d) {
            mMinor = d;
            mMajor = d*5.0;
            return;
         }
         d *= 5.0;
         if (units < d) {
            mMinor = d;
            mMajor = d*2.0;
            return;
         }
         d *= 2.0;
         mDigits--;
         // More than 10 digit numbers?  Something is badly wrong.
         // Probably units is coming in with too high a value.
         wxASSERT( mDigits >= -10 );
         if( mDigits < -10 )
            break;
      }
      mMinor = d;
      mMajor = d * 2.0;
      break;
 
   case RealLogFormat:
      d = 0.000001;
      // mDigits is number of digits after the decimal point.
      mDigits = 6;
      for(;;) {
         if (units < d) {
            mMinor = d;
            mMajor = d*5.0;
            return;
         }
         d *= 5.0;
         if (units < d) {
            mMinor = d;
            mMajor = d*2.0;
            return;
         }
         d *= 2.0;
         mDigits--;
         // More than 10 digit numbers?  Something is badly wrong.
         // Probably units is coming in with too high a value.
         wxASSERT( mDigits >= -10 );
         if( mDigits < -10 )
            break;
      }
      mDigits++;
      mMinor = d;
      mMajor = d * 2.0;
      break;
   }
}

References format, Ruler::IntFormat, Ruler::LinearDBFormat, mDigits, mMajor, mMinor, Ruler::RealFormat, Ruler::RealLogFormat, and Ruler::TimeFormat.

Member Function Documentation

LabelString()

TranslatableString Ruler::TickSizes::LabelString ( double  d, RulerFormat  format, const TranslatableString &  units  ) const

inline

Definition at line 602 of file Ruler.cpp.

{
   // Given a value, turn it into a string according
   // to the current ruler format.  The number of digits of
   // accuracy depends on the resolution of the ruler,
   // i.e. how far zoomed in or out you are.
 
   wxString s;
 
   // PRL Todo: are all these cases properly localized?  (Decimal points,
   // hour-minute-second, etc.?)
 
   // Replace -0 with 0
   if (d < 0.0 && (d+mMinor > 0.0) && ( format != RealLogFormat ))
      d = 0.0;
 
   switch( format ) {
   case IntFormat:
      s.Printf(wxT("%d"), (int)floor(d+0.5));
      break;
   case LinearDBFormat:
      if (mMinor >= 1.0)
         s.Printf(wxT("%d"), (int)floor(d+0.5));
      else {
         int precision = -log10(mMinor);
         s.Printf(wxT("%.*f"), precision, d);
      }
      break;
   case RealFormat:
      if (mMinor >= 1.0)
         s.Printf(wxT("%d"), (int)floor(d+0.5));
      else {
         s.Printf(wxString::Format(wxT("%%.%df"), mDigits), d);
      }
      break;
   case RealLogFormat:
      if (mMinor >= 1.0)
         s.Printf(wxT("%d"), (int)floor(d+0.5));
      else {
         s.Printf(wxString::Format(wxT("%%.%df"), mDigits), d);
      }
      break;
   case TimeFormat:
      if (useMajor) {
         if (d < 0) {
            s = wxT("-");
            d = -d;
         }
 
         #if ALWAYS_HH_MM_SS
         int secs = (int)(d + 0.5);
         if (mMinor >= 1.0) {
            s.Printf(wxT("%d:%02d:%02d"), secs/3600, (secs/60)%60, secs%60);
         }
         else {
            wxString t1, t2, format;
            t1.Printf(wxT("%d:%02d:"), secs/3600, (secs/60)%60);
            format.Printf(wxT("%%0%d.%dlf"), mDigits+3, mDigits);
            t2.Printf(format, fmod(d, 60.0));
            s += t1 + t2;
         }
         break;
         #endif
 
         if (mMinor >= 3600.0) {
            int hrs = (int)(d / 3600.0 + 0.5);
            wxString h;
            h.Printf(wxT("%d:00:00"), hrs);
            s += h;
         }
         else if (mMinor >= 60.0) {
            int minutes = (int)(d / 60.0 + 0.5);
            wxString m;
            if (minutes >= 60)
               m.Printf(wxT("%d:%02d:00"), minutes/60, minutes%60);
            else
               m.Printf(wxT("%d:00"), minutes);
            s += m;
         }
         else if (mMinor >= 1.0) {
            int secs = (int)(d + 0.5);
            wxString t;
            if (secs >= 3600)
               t.Printf(wxT("%d:%02d:%02d"), secs/3600, (secs/60)%60, secs%60);
            else if (secs >= 60)
               t.Printf(wxT("%d:%02d"), secs/60, secs%60);
            else
               t.Printf(wxT("%d"), secs);
            s += t;
         }
         else {
// Commented out old and incorrect code for avoiding the 40mins and 60 seconds problem
// It was causing Bug 463 - Incorrect Timeline numbering (where at high zoom and long tracks,
// numbers did not change.
#if 0
            // The casting to float is working around an issue where 59 seconds
            // would show up as 60 when using g++ (Ubuntu 4.3.3-5ubuntu4) 4.3.3.
            int secs = (int)(float)(d);
            wxString t1, t2, format;
 
            if (secs >= 3600)
               t1.Printf(wxT("%d:%02d:"), secs/3600, (secs/60)%60);
            else if (secs >= 60)
               t1.Printf(wxT("%d:"), secs/60);
 
            if (secs >= 60)
               format.Printf(wxT("%%0%d.%dlf"), mDigits+3, mDigits);
            else
               format.Printf(wxT("%%%d.%dlf"), mDigits+3, mDigits);
            // The casting to float is working around an issue where 59 seconds
            // would show up as 60 when using g++ (Ubuntu 4.3.3-5ubuntu4) 4.3.3.
            t2.Printf(format, fmod((float)d, (float)60.0));
#else
            // For d in the range of hours, d is just very slightly below the value it should 
            // have, because of using a double, which in turn yields values like 59:59:999999 
            // mins:secs:nanosecs when we want 1:00:00:000000
            // so adjust by less than a nano second per hour to get nicer number formatting.
            double dd = d * 1.000000000000001;
            int secs = (int)(dd);
            wxString t1, t2, format;
 
            if (secs >= 3600)
               t1.Printf(wxT("%d:%02d:"), secs/3600, (secs/60)%60);
            else if (secs >= 60)
               t1.Printf(wxT("%d:"), secs/60);
 
            if (secs >= 60)
               format.Printf(wxT("%%0%d.%dlf"), mDigits+3, mDigits);
            else
               format.Printf(wxT("%%%d.%dlf"), mDigits+3, mDigits);
            // dd will be reduced to just the seconds and fractional part.
            dd = dd - secs + (secs%60);
            // truncate to appropriate number of digits, so that the print formatting 
            // doesn't round up 59.9999999 to 60.
            double multiplier = pow( 10, mDigits);
            dd = ((int)(dd * multiplier))/multiplier;
            t2.Printf(format, dd);
#endif
            s += t1 + t2;
         }
      }
      else {
      }
   }
 
   auto result = Verbatim( s );
   if (!units.empty())
      result += units;
 
   return result;
}

References TranslatableString::empty(), format, Ruler::IntFormat, Ruler::LinearDBFormat, mDigits, mMinor, Ruler::RealFormat, Ruler::RealLogFormat, Ruler::TimeFormat, useMajor, Verbatim(), and wxT().

Referenced by Ruler::Updater::Tick().

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Member Data Documentation

mDigits

int Ruler::TickSizes::mDigits

Definition at line 364 of file Ruler.cpp.

Referenced by LabelString(), and TickSizes().

mMajor

double Ruler::TickSizes::mMajor

Definition at line 361 of file Ruler.cpp.

Referenced by TickSizes().

mMinor

double Ruler::TickSizes::mMinor

Definition at line 362 of file Ruler.cpp.

Referenced by LabelString(), and TickSizes().

useMajor

bool Ruler::TickSizes::useMajor = true

Definition at line 359 of file Ruler.cpp.

Referenced by LabelString().

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

• Ruler.cpp