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PlaylistView: support alpha channel in background images

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Ty
2025-07-03 21:23:11 -07:00
committed by Jonas Kvinge
parent 1ebc32c3aa
commit 20e5c014ef
1 changed files with 2 additions and 2 deletions
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4
src/playlist/playlistview.cpp
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@@ -1468,10 +1468,10 @@ void PlaylistView::set_background_image(const QImage &image) {
} }
if (!background_image_.isNull()) { if (!background_image_.isNull()) {
// Apply opacity filter // Apply opacity filter: scale (not overwrite!) the alpha channel
uchar *bits = background_image_.bits(); uchar *bits = background_image_.bits();
for (int i = 0; i < background_image_.height() * background_image_.bytesPerLine(); i += 4) { for (int i = 0; i < background_image_.height() * background_image_.bytesPerLine(); i += 4) {
bits[i + 3] = static_cast<uchar>((opacity_level_ / 100.0) * 255); bits[i + 3] = static_cast<uchar>(bits[i + 3] * (opacity_level_ / 100.0));
} }
if (blur_radius_ != 0) { if (blur_radius_ != 0) {