manually apply grygorii's waveform amplitude implementation

1 files changed, 8 insertions, 2 deletions

diff --git a/libs/canvas/wave_view.cc b/libs/canvas/wave_view.cc
index 8fda5ff0aa..c418a37f7c 100644
--- a/libs/canvas/wave_view.cc
+++ b/libs/canvas/wave_view.cc
@@ -834,7 +834,13 @@ WaveView::get_image (Cairo::RefPtr<Cairo::ImageSurface>& image, framepos_t start
 			     sample_start, sample_end - sample_start,
 			     _channel,
 			     _samples_per_pixel);
-
+    
+	// apply waveform amplitude zoom multiplier
+	for (int i = 0; i < n_peaks; ++i) {
+		peaks[i].max *= _amplitude_above_axis;
+		peaks[i].min *= _amplitude_above_axis;
+	}
+    
 	image = Cairo::ImageSurface::create (Cairo::FORMAT_ARGB32, n_peaks, _height);
 
 	if (peaks_read > 0) {
@@ -1039,7 +1045,7 @@ WaveView::set_shape (Shape s)
 void
 WaveView::set_amplitude_above_axis (double a)
 {
-	if (_amplitude_above_axis != a) {
+	if (abs (_amplitude_above_axis - a) > 0.01) {
 		begin_visual_change ();
 		invalidate_image_cache ();
 		_amplitude_above_axis = a;