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QPolygon: add toPolygonF()

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This was forgotten when implementing QTBUG-73160, but suggested in
passing in QTBUG-64.

[ChangeLog][QtGui][QPolygon] Added toPolygonF().

Task-number: QTBUG-73160
Task-number: QTBUG-64
Change-Id: I9b33cf47a0d432aa842ab0f8337001c66e4ca41c
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
This commit is contained in:
Marc Mutz 2022-05-09 17:09:53 +02:00
parent 83779c858b
commit a1903eb941
3 changed files with 28 additions and 0 deletions
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10
src/gui/painting/qpolygon.cpp
View File

@ -442,6 +442,16 @@ QRect QPolygon::boundingRect() const
return QRect(QPoint(minx,miny), QPoint(maxx,maxy));
}
/*!
\fn QPolygon::toPolygonF() const
\since 6.4
Returns this polygon as a polygon with floating point accuracy.
\sa QPolygonF::toPolygon()
*/
#ifndef QT_NO_DEBUG_STREAM
QDebug operator<<(QDebug dbg, const QPolygon &a)
{

6
src/gui/painting/qpolygon.h
View File

@ -51,6 +51,8 @@ class QTransform;
class QRect;
class QVariant;
class QPolygonF;
// We export each out-of-line method individually to prevent MSVC from
// exporting the whole QList class.
class QPolygon : public QList<QPoint>
@ -91,6 +93,8 @@ public:
[[nodiscard]] Q_GUI_EXPORT QPolygon subtracted(const QPolygon &r) const;
Q_GUI_EXPORT bool intersects(const QPolygon &r) const;
[[nodiscard]] inline QPolygonF toPolygonF() const;
};
Q_DECLARE_SHARED(QPolygon)
@ -159,6 +163,8 @@ public:
};
Q_DECLARE_SHARED(QPolygonF)
QPolygonF QPolygon::toPolygonF() const { return QPolygonF(*this); }
#ifndef QT_NO_DEBUG_STREAM
Q_GUI_EXPORT QDebug operator<<(QDebug, const QPolygonF &);
#endif

12
tests/auto/gui/painting/qpolygon/tst_qpolygon.cpp
View File

@ -41,6 +41,7 @@ class tst_QPolygon : public QObject
private slots:
void constructors();
void toPolygonF();
void boundingRect_data();
void boundingRect();
void boundingRectF_data();
@ -80,6 +81,17 @@ void tst_QPolygon::constructors()
constructors_helperF(QRectF(1, 2, 3, 4));
}
void tst_QPolygon::toPolygonF()
{
const QPolygon p = {{1, 1}, {-1, 1}, {-1, -1}, {1, -1}};
auto pf = p.toPolygonF();
static_assert(std::is_same_v<decltype(pf), QPolygonF>);
QCOMPARE(pf.size(), p.size());
auto p2 = pf.toPolygon();
static_assert(std::is_same_v<decltype(p2), QPolygon>);
QCOMPARE(p, p2);
}
void tst_QPolygon::boundingRect_data()
{
QTest::addColumn<QPolygon>("poly");