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Bug1161: maximum zoom-out in Waveform (dB) ruler should be +6.02 dB, not +2 dB

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This commit is contained in:
Paul Licameli 2015-08-27 14:18:25 -04:00
parent 8c75d70669
commit 78ec5cdf0b
1 changed files with 9 additions and 4 deletions
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13
src/TrackPanel.cpp
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@ -4713,15 +4713,20 @@ void TrackPanel::HandleWaveTrackVZoom
} }
else { else {
// Zoom out // Zoom out
const WaveformSettings &settings = track->GetWaveformSettings();
const bool linear = settings.isLinear();
const float top = linear
? 2.0
: (LINEAR_TO_DB(2.0) + settings.dBRange) / settings.dBRange;
if (min <= -1.0 && max >= 1.0) { if (min <= -1.0 && max >= 1.0) {
// Go to the maximal zoom-out // Go to the maximal zoom-out
min = -2.0; min = -top;
max = 2.0; max = top;
} }
else { else {
// limit to +/- 1 range unless already outside that range... // limit to +/- 1 range unless already outside that range...
float minRange = (min < -1) ? -2.0 : -1.0; float minRange = (min < -1) ? -top : -1.0;
float maxRange = (max > 1) ? 2.0 : 1.0; float maxRange = (max > 1) ? top : 1.0;
// and enforce vertical zoom limits. // and enforce vertical zoom limits.
const float p1 = (zoomStart - ypos) / (float)height; const float p1 = (zoomStart - ypos) / (float)height;
if (fixedMousePoint) { if (fixedMousePoint) {