init

Telegram/lib_ui/ui/gl/gl_math.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/gl/gl_math.h"
+
+namespace Ui::GL {
+
+QVector4D Uniform(const QRect &rect, float factor) {
+	return QVector4D(
+		rect.x() * factor,
+		rect.y() * factor,
+		rect.width() * factor,
+		rect.height() * factor);
+}
+
+QVector4D Uniform(const Rect &rect) {
+	return QVector4D(rect.x(), rect.y(), rect.width(), rect.height());
+}
+
+QSizeF Uniform(QSize size) {
+	return size;
+}
+
+Rect TransformRect(const Rect &raster, QSize viewport, float factor) {
+	return {
+		raster.left() * factor,
+		float(viewport.height() - raster.bottom()) * factor,
+		raster.width() * factor,
+		raster.height() * factor,
+	};
+}
+
+} // namespace Ui::GL