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| author | Marc Mutz <marc.mutz@kdab.com> | 2015-04-08 19:44:48 +0200 |
|---|---|---|
| committer | Marc Mutz <marc.mutz@kdab.com> | 2015-04-21 07:28:14 +0000 |
| commit | 05d16937935ff830c3266c4a8566feed7fe33dbf (patch) | |
| tree | f4f638666520f1d9c935b5cb21440d83120b76eb /src/gui/painting/qmatrix.cpp | |
| parent | 299350f668b0077bbb11331320eeb843d3feb126 (diff) | |
Add qHash(QMatrix) and qHash(QTransform)
QMatrix and QTransform can be compared for equality,
so qHash should be overloaded, too.
[ChangeLog][QtCore][QMatrix] Added qHash(QMatrix).
[ChangeLog][QtCore][QTransform] Added qHash(QTransform).
Change-Id: I1ce925ebe258c9d7e35b68e5ac5c3373f1460c58
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Diffstat (limited to 'src/gui/painting/qmatrix.cpp')
| -rw-r--r-- | src/gui/painting/qmatrix.cpp | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/src/gui/painting/qmatrix.cpp b/src/gui/painting/qmatrix.cpp index acedc6a7ba..e4d756c18d 100644 --- a/src/gui/painting/qmatrix.cpp +++ b/src/gui/painting/qmatrix.cpp @@ -31,9 +31,11 @@ ** ****************************************************************************/ +#include "qmatrix.h" + #include "qdatastream.h" #include "qdebug.h" -#include "qmatrix.h" +#include "qhashfunctions.h" #include "qregion.h" #include "qpainterpath.h" #include "qpainterpath_p.h" @@ -972,6 +974,26 @@ bool QMatrix::operator==(const QMatrix &m) const _dy == m._dy; } + +/*! + \since 5.6 + \relates QMatrix + + Returns the hash value for \a key, using + \a seed to seed the calculation. +*/ +uint qHash(const QMatrix &key, uint seed) Q_DECL_NOTHROW +{ + QtPrivate::QHashCombine hash; + seed = hash(key.m11(), seed); + seed = hash(key.m12(), seed); + seed = hash(key.m21(), seed); + seed = hash(key.m22(), seed); + seed = hash(key.dx(), seed); + seed = hash(key.dy(), seed); + return seed; +} + /*! \fn bool QMatrix::operator!=(const QMatrix &matrix) const |