GH-1197 add console log color adaptation

rainbow library was part of KDE - KGuiAddons

1 files changed, 26 insertions, 0 deletions

diff --git a/application/Colors.cpp b/application/Colors.cpp
new file mode 100644
index 00000000..8812c93d
--- /dev/null
+++ b/application/Colors.cpp
@@ -0,0 +1,26 @@
+#include "Colors.h"
+
+/**
+ * Blend the color with the front color, adapting to the back color
+ */
+QColor Color::blend(QColor front, QColor back, QColor color, uchar ratio)
+{
+	Q_ASSERT(front.isValid());
+	Q_ASSERT(back.isValid());
+	if (Rainbow::luma(front) > Rainbow::luma(back))
+	{
+		// for dark color schemes, produce a fitting color first
+		color = Rainbow::tint(front, color, 0.5);
+	}
+	// adapt contrast
+	return Rainbow::mix(front, color, float(ratio) / float(0xff));
+}
+
+/**
+ * Blend the color with the back color
+ */
+QColor Color::blendBackground(QColor back, QColor color, uchar ratio)
+{
+	// adapt contrast
+	return Rainbow::mix(back, color, float(ratio) / float(0xff));
+}