init

Telegram/lib_ui/ui/effects/gradient.cpp

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+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#include "ui/effects/gradient.h"
+
+namespace anim {
+
+QColor gradient_color_at(const QGradientStops &stops, float64 ratio) {
+	for (auto i = 1; i < stops.size(); i++) {
+		const auto currentPoint = stops[i].first;
+		const auto previousPoint = stops[i - 1].first;
+
+		if ((ratio <= currentPoint) && (ratio >= previousPoint)) {
+			return anim::color(
+				stops[i - 1].second,
+				stops[i].second,
+				(ratio - previousPoint) / (currentPoint - previousPoint));
+		}
+	}
+	return QColor();
+}
+
+QColor gradient_color_at(const QGradient &gradient, float64 ratio) {
+	return gradient_color_at(gradient.stops(), ratio);
+}
+
+} // namespace anim