anonymous_namespace{ClipPitchAndSpeedButtonHandle.cpp} Namespace Reference

Functions
wxString	GetPitchShiftText (int clipCentShift)
wxString	GetPlaybackSpeedText (double clipStretchRatio)
void	DrawPitchOrSpeedIconIfItFits (wxDC &dc, const wxRect &rect, const wxBitmap &icon, const wxString &text)

Detailed Description

---

Audacity: A Digital Audio Editor

ClipPitchAndSpeedButtonHandle.cpp

Matthieu Hodgkinson

Function Documentation

DrawPitchOrSpeedIconIfItFits()

void anonymous_namespace{ClipPitchAndSpeedButtonHandle.cpp}::DrawPitchOrSpeedIconIfItFits	(	wxDC &	dc,
		const wxRect &	rect,
		const wxBitmap &	icon,
		const wxString &	text
	)

Definition at line 87 of file ClipPitchAndSpeedButtonHandle.cpp.

{
   const auto textExtent = dc.GetTextExtent(text);
   const auto textWidth = textExtent.GetWidth();
   const auto textHeight = textExtent.GetHeight();
 
   const auto iconHeight = icon.GetHeight();
   const auto iconWidth = textWidth == 0 ? 0 : icon.GetWidth();
   const auto contentWidth = iconWidth + textWidth;
   if (contentWidth == 0 || contentWidth > rect.width)
      return;
   const auto height = rect.GetHeight();
   const auto iconTop = rect.GetTop() + (height - iconHeight) / 2;
   const auto x = rect.x + (rect.width - contentWidth) / 2;
   dc.DrawBitmap(icon, x, iconTop);
   const auto y = rect.GetTop() + (height - textHeight) / 2;
   dc.DrawText(text, x + iconWidth, y);
}

Referenced by ClipButtonSpecializations< ClipButtonId::Pitch >::DrawOnClip(), and ClipButtonSpecializations< ClipButtonId::Speed >::DrawOnClip().

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GetPitchShiftText()

wxString anonymous_namespace{ClipPitchAndSpeedButtonHandle.cpp}::GetPitchShiftText

(

int

clipCentShift

)

Definition at line 32 of file ClipPitchAndSpeedButtonHandle.cpp.

{
   wxString pitchShiftText;
   if (clipCentShift != 0)
   {
      pitchShiftText = wxString::Format("%.2f", std::abs(clipCentShift) / 100.);
      while (pitchShiftText.EndsWith("0"))
         pitchShiftText.RemoveLast();
      if (pitchShiftText.EndsWith(".") || pitchShiftText.EndsWith(","))
         pitchShiftText.RemoveLast();
   }
   return pitchShiftText;
}

Referenced by ClipButtonSpecializations< ClipButtonId::Pitch >::DrawOnClip().

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GetPlaybackSpeedText()

wxString anonymous_namespace{ClipPitchAndSpeedButtonHandle.cpp}::GetPlaybackSpeedText

(

double

clipStretchRatio

)

Definition at line 46 of file ClipPitchAndSpeedButtonHandle.cpp.

{
   if (TimeAndPitchInterface::IsPassThroughMode(clipStretchRatio))
      return {};
 
   // clang-format off
   // We reckon that most of the time, a rounded percentage value is sufficient.
   // There are two exceptions:
   // - The clip is only slightly stretched such that the rounded value is 100.
   //   There should be an indicator if and only if the clip is stretched, this
   //   must be reliable. Yet showing "100%" would be confusing. Hence in that
   //   case we constrain the values to [99.1, ..., 99.9, 100.1,
   //   ..., 100.9], i.e., omitting 100.0.
   // - The clip is stretched so much that the playback speed is less than 1%.
   //   Make sure in that case that we never show 0%, but always at least 0.1%.
   // clang-format on
 
   const auto playbackSpeed = 100 / clipStretchRatio;
   wxString fullText;
 
   // We compare with .95 rather than 1, since playback speeds within [100.95,
   // 101) get rounded to 101.0 and (99, 99.05] to 99.0 by `wxString::Format`.
   // Let these be processed by the integer-display branch of this if statement
   // instead.
   if (fabs(playbackSpeed - 100.) < .95)
      // Never show 100.0%
      fullText += wxString::Format(
         "%.1f%%", playbackSpeed > 100 ? std::max(playbackSpeed, 100.1) :
                                         std::min(playbackSpeed, 99.9));
   else if (playbackSpeed < 1)
      // Never show 0.0%
      fullText += wxString::Format("%.1f%%", std::max(playbackSpeed, 0.1));
   else
   {
      const auto roundedPlaybackSpeed =
         static_cast<int>(std::round(playbackSpeed));
      fullText += wxString::Format("%d%%", roundedPlaybackSpeed);
   }
   return fullText;
}

References TimeAndPitchInterface::IsPassThroughMode(), min(), and fast_float::round().

Referenced by ClipButtonSpecializations< ClipButtonId::Speed >::DrawOnClip().

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