From 7b684f4d15fa8f75fe802f9dd1534cf4ee2c25ea Mon Sep 17 00:00:00 2001 From: Mikaël Capelle Date: Fri, 8 Jan 2021 17:41:10 +0100 Subject: Tentative fix for automatic text color when markers or separator colors are used. --- src/settings.cpp | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'src/settings.cpp') diff --git a/src/settings.cpp b/src/settings.cpp index 251e2b15..488a9b01 100644 --- a/src/settings.cpp +++ b/src/settings.cpp @@ -1326,12 +1326,12 @@ void ColorSettings::setColorSeparatorScrollbar(bool b) QColor ColorSettings::idealTextColor(const QColor& rBackgroundColor) { - if (rBackgroundColor.alpha() == 0) + if (rBackgroundColor.alpha() < 50) return QColor(Qt::black); - const int THRESHOLD = 106 * 255.0f / rBackgroundColor.alpha(); - int BackgroundDelta = (rBackgroundColor.red() * 0.299) + (rBackgroundColor.green() * 0.587) + (rBackgroundColor.blue() * 0.114); - return QColor((255 - BackgroundDelta <= THRESHOLD) ? Qt::black : Qt::white); + // "inverse' of luminance of the background + int iLuminance = (rBackgroundColor.red() * 0.299) + (rBackgroundColor.green() * 0.587) + (rBackgroundColor.blue() * 0.114); + return QColor(iLuminance >= 128 ? Qt::black : Qt::white); } -- cgit v1.3.1