diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/user.cpp | 20 | ||||
| -rw-r--r-- | lib/util.cpp | 19 | ||||
| -rw-r--r-- | lib/util.h | 8 |
3 files changed, 28 insertions, 19 deletions
diff --git a/lib/user.cpp b/lib/user.cpp index 7f3f11f6..7b695618 100644 --- a/lib/user.cpp +++ b/lib/user.cpp @@ -33,9 +33,6 @@ #include <QtCore/QStringBuilder> #include <QtCore/QElapsedTimer> -#include <QtCore/QCryptographicHash> -#include <QtCore/QtEndian> - #include <functional> using namespace QMatrixClient; @@ -50,23 +47,8 @@ class User::Private return Avatar(move(url)); } - qreal makeHueF() - { - Q_ASSERT(!userId.isEmpty()); - QByteArray hash = QCryptographicHash::hash(userId.toUtf8(), - QCryptographicHash::Sha1); - QDataStream dataStream(qToLittleEndian(hash).left(2)); - dataStream.setByteOrder(QDataStream::LittleEndian); - quint16 hashValue; - dataStream >> hashValue; - const auto hueF = - qreal(hashValue)/std::numeric_limits<quint16>::max(); - Q_ASSERT((0 <= hueF) && (hueF <= 1)); - return hueF; - } - Private(QString userId, Connection* connection) - : userId(move(userId)), connection(connection), hueF(makeHueF()) + : userId(move(userId)), connection(connection), hueF(stringToHueF(this->userId)) { } QString userId; diff --git a/lib/util.cpp b/lib/util.cpp index 4e17d2f9..01d4e77b 100644 --- a/lib/util.cpp +++ b/lib/util.cpp @@ -23,6 +23,10 @@ #include <QtCore/QDir> #include <QtCore/QStringBuilder> +#include <QtCore/QCryptographicHash> +#include <QtCore/QtEndian> +#include <QtCore/QDataStream> + static const auto RegExpOptions = QRegularExpression::CaseInsensitiveOption | QRegularExpression::OptimizeOnFirstUsageOption @@ -93,6 +97,21 @@ QString QMatrixClient::cacheLocation(const QString& dirName) return cachePath; } +qreal QMatrixClient::stringToHueF(const QString &string) +{ + Q_ASSERT(!string.isEmpty()); + QByteArray hash = QCryptographicHash::hash(string.toUtf8(), + QCryptographicHash::Sha1); + QDataStream dataStream(qToLittleEndian(hash).left(2)); + dataStream.setByteOrder(QDataStream::LittleEndian); + quint16 hashValue; + dataStream >> hashValue; + const auto hueF = + qreal(hashValue)/std::numeric_limits<quint16>::max(); + Q_ASSERT((0 <= hueF) && (hueF <= 1)); + return hueF; +} + // Tests for function_traits<> #ifdef Q_CC_CLANG @@ -314,5 +314,13 @@ namespace QMatrixClient * \param dir path to cache directory relative to the standard cache path */ QString cacheLocation(const QString& dirName); + + /** Hue color component of based of the hash of the string. + * The implementation is based on XEP-0392: + * https://xmpp.org/extensions/xep-0392.html + * Naming and range are the same as QColor's hueF method: + * https://doc.qt.io/qt-5/qcolor.html#integer-vs-floating-point-precision + */ + qreal stringToHueF(const QString& string); } // namespace QMatrixClient |