Add and use Time::proportion_of().

1 files changed, 2 insertions, 2 deletions

diff --git a/src/lib/video_content.cc b/src/lib/video_content.cc
index 9a558052a..4b6680169 100644
--- a/src/lib/video_content.cc
+++ b/src/lib/video_content.cc
@@ -429,14 +429,14 @@ VideoContent::fade(shared_ptr<const Film> film, ContentTime time) const
 	/* time after the trimmed start of the content */
 	auto const time_after_start = time - trim_start;
 	if (fade_in_time.get() && time_after_start < fade_in_time) {
-		return std::max(0.0, static_cast<double>(time_after_start.get()) / fade_in_time.get());
+		return std::max(0.0, time_after_start.proportion_of(fade_in_time));
 	}
 
 	auto const fade_out_time = ContentTime::from_frames(fade_out(), vfr);
 	auto const end = ContentTime::from_frames(length(), vfr) - _parent->trim_end();
 	auto const time_after_end_fade_start = time - (end - fade_out_time);
 	if (time_after_end_fade_start > ContentTime()) {
-		return std::max(0.0, 1 - static_cast<double>(time_after_end_fade_start.get()) / fade_out_time.get());
+		return std::max(0.0, 1 - time_after_end_fade_start.proportion_of(fade_out_time));
 	}
 
 	return {};