summaryrefslogtreecommitdiffstats
path: root/src/gui/painting/qtransform.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/gui/painting/qtransform.cpp')
-rw-r--r--src/gui/painting/qtransform.cpp359
1 files changed, 122 insertions, 237 deletions
diff --git a/src/gui/painting/qtransform.cpp b/src/gui/painting/qtransform.cpp
index 8f8a675fc9..df57d2c190 100644
--- a/src/gui/painting/qtransform.cpp
+++ b/src/gui/painting/qtransform.cpp
@@ -1,41 +1,5 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the QtGui module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 3 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL3 included in the
-** packaging of this file. Please review the following information to
-** ensure the GNU Lesser General Public License version 3 requirements
-** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU
-** General Public License version 2.0 or (at your option) the GNU General
-** Public license version 3 or any later version approved by the KDE Free
-** Qt Foundation. The licenses are as published by the Free Software
-** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
-** included in the packaging of this file. Please review the following
-** information to ensure the GNU General Public License requirements will
-** be met: https://www.gnu.org/licenses/gpl-2.0.html and
-** https://www.gnu.org/licenses/gpl-3.0.html.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
+// Copyright (C) 2021 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qtransform.h"
#include "qdatastream.h"
@@ -45,7 +9,7 @@
#include "qpainterpath.h"
#include "qpainterpath_p.h"
#include "qvariant.h"
-#include <qmath.h>
+#include "qmath_p.h"
#include <qnumeric.h>
#include <private/qbezier_p.h>
@@ -90,7 +54,7 @@ static void nanWarning(const char *func)
if (t == TxProject) { \
qreal w = (m_matrix[0][2] * FX_ + m_matrix[1][2] * FY_ + m_matrix[2][2]); \
if (w < qreal(Q_NEAR_CLIP)) w = qreal(Q_NEAR_CLIP); \
- w = 1./w; \
+ w = qreal(1.)/w; \
nx *= w; \
ny *= w; \
} \
@@ -213,6 +177,7 @@ static void nanWarning(const char *func)
transformation is achieved by setting both the projection factors and
the scaling factors.
+ \section2 Combining Transforms
Here's the combined transformations example using basic matrix
operations:
@@ -223,6 +188,26 @@ static void nanWarning(const char *func)
\snippet transform/main.cpp 2
\endtable
+ The combined transform first scales each operand, then rotates it, and
+ finally translates it, just as in the order in which the product of its
+ factors is written. This means the point to which the transforms are
+ applied is implicitly multiplied on the left with the transform
+ to its right.
+
+ \section2 Relation to Matrix Notation
+ The matrix notation in QTransform is the transpose of a commonly-taught
+ convention which represents transforms and points as matrices and vectors.
+ That convention multiplies its matrix on the left and column vector to the
+ right. In other words, when several transforms are applied to a point, the
+ right-most matrix acts directly on the vector first. Then the next matrix
+ to the left acts on the result of the first operation - and so on. As a
+ result, that convention multiplies the matrices that make up a composite
+ transform in the reverse of the order in QTransform, as you can see in
+ \l {Combining Transforms}. Transposing the matrices, and combining them to
+ the right of a row vector that represents the point, lets the matrices of
+ transforms appear, in their product, in the order in which we think of the
+ transforms being applied to the point.
+
\sa QPainter, {Coordinate System}, {painting/affine}{Affine
Transformations Example}, {Transformations Example}
*/
@@ -373,7 +358,7 @@ QTransform &QTransform::translate(qreal dx, qreal dy)
if (dx == 0 && dy == 0)
return *this;
#ifndef QT_NO_DEBUG
- if (qIsNaN(dx) | qIsNaN(dy)) {
+ if (qIsNaN(dx) || qIsNaN(dy)) {
nanWarning("translate");
return *this;
}
@@ -416,7 +401,7 @@ QTransform &QTransform::translate(qreal dx, qreal dy)
QTransform QTransform::fromTranslate(qreal dx, qreal dy)
{
#ifndef QT_NO_DEBUG
- if (qIsNaN(dx) | qIsNaN(dy)) {
+ if (qIsNaN(dx) || qIsNaN(dy)) {
nanWarning("fromTranslate");
return QTransform();
}
@@ -441,7 +426,7 @@ QTransform & QTransform::scale(qreal sx, qreal sy)
if (sx == 1 && sy == 1)
return *this;
#ifndef QT_NO_DEBUG
- if (qIsNaN(sx) | qIsNaN(sy)) {
+ if (qIsNaN(sx) || qIsNaN(sy)) {
nanWarning("scale");
return *this;
}
@@ -482,7 +467,7 @@ QTransform & QTransform::scale(qreal sx, qreal sy)
QTransform QTransform::fromScale(qreal sx, qreal sy)
{
#ifndef QT_NO_DEBUG
- if (qIsNaN(sx) | qIsNaN(sy)) {
+ if (qIsNaN(sx) || qIsNaN(sy)) {
nanWarning("fromScale");
return QTransform();
}
@@ -507,7 +492,7 @@ QTransform & QTransform::shear(qreal sh, qreal sv)
if (sh == 0 && sv == 0)
return *this;
#ifndef QT_NO_DEBUG
- if (qIsNaN(sh) | qIsNaN(sv)) {
+ if (qIsNaN(sh) || qIsNaN(sv)) {
nanWarning("shear");
return *this;
}
@@ -548,29 +533,33 @@ QTransform & QTransform::shear(qreal sh, qreal sv)
return *this;
}
-const qreal deg2rad = qreal(0.017453292519943295769); // pi/180
-const qreal inv_dist_to_plane = 1. / 1024.;
-
/*!
- \fn QTransform &QTransform::rotate(qreal angle, Qt::Axis axis)
+ \since 6.5
- Rotates the coordinate system counterclockwise by the given \a angle
- about the specified \a axis and returns a reference to the matrix.
+ Rotates the coordinate system counterclockwise by the given angle \a a
+ about the specified \a axis at distance \a distanceToPlane from the
+ screen and returns a reference to the matrix.
+//! [transform-rotate-note]
Note that if you apply a QTransform to a point defined in widget
coordinates, the direction of the rotation will be clockwise
because the y-axis points downwards.
The angle is specified in degrees.
+//! [transform-rotate-note]
+
+ If \a distanceToPlane is zero, it will be ignored. This is suitable
+ for implementing orthographic projections where the z coordinate should
+ be dropped rather than projected.
\sa setMatrix()
*/
-QTransform & QTransform::rotate(qreal a, Qt::Axis axis)
+QTransform & QTransform::rotate(qreal a, Qt::Axis axis, qreal distanceToPlane)
{
if (a == 0)
return *this;
#ifndef QT_NO_DEBUG
- if (qIsNaN(a)) {
+ if (qIsNaN(a) || qIsNaN(distanceToPlane)) {
nanWarning("rotate");
return *this;
}
@@ -585,7 +574,7 @@ QTransform & QTransform::rotate(qreal a, Qt::Axis axis)
else if (a == 180.)
cosa = -1.;
else{
- qreal b = deg2rad*a; // convert to radians
+ qreal b = qDegreesToRadians(a);
sina = qSin(b); // fast and convenient
cosa = qCos(b);
}
@@ -633,13 +622,16 @@ QTransform & QTransform::rotate(qreal a, Qt::Axis axis)
if (m_dirty < TxRotate)
m_dirty = TxRotate;
} else {
+ if (!qIsNull(distanceToPlane))
+ sina /= distanceToPlane;
+
QTransform result;
if (axis == Qt::YAxis) {
result.m_matrix[0][0] = cosa;
- result.m_matrix[0][2] = -sina * inv_dist_to_plane;
+ result.m_matrix[0][2] = -sina;
} else {
result.m_matrix[1][1] = cosa;
- result.m_matrix[1][2] = -sina * inv_dist_to_plane;
+ result.m_matrix[1][2] = -sina;
}
result.m_type = TxProject;
*this = result * *this;
@@ -648,24 +640,49 @@ QTransform & QTransform::rotate(qreal a, Qt::Axis axis)
return *this;
}
+#if QT_VERSION < QT_VERSION_CHECK(7, 0, 0)
/*!
- \fn QTransform & QTransform::rotateRadians(qreal angle, Qt::Axis axis)
+ \overload
+
+ Rotates the coordinate system counterclockwise by the given angle \a a
+ about the specified \a axis at distance 1024.0 from the screen and
+ returns a reference to the matrix.
+
+ \include qtransform.cpp transform-rotate-note
- Rotates the coordinate system counterclockwise by the given \a angle
- about the specified \a axis and returns a reference to the matrix.
+ \sa setMatrix
+*/
+QTransform &QTransform::rotate(qreal a, Qt::Axis axis)
+{
+ return rotate(a, axis, 1024.0);
+}
+#endif
+
+/*!
+ \since 6.5
+ Rotates the coordinate system counterclockwise by the given angle \a a
+ about the specified \a axis at distance \a distanceToPlane from the
+ screen and returns a reference to the matrix.
+
+//! [transform-rotate-radians-note]
Note that if you apply a QTransform to a point defined in widget
coordinates, the direction of the rotation will be clockwise
because the y-axis points downwards.
The angle is specified in radians.
+//! [transform-rotate-radians-note]
+
+ If \a distanceToPlane is zero, it will be ignored. This is suitable
+ for implementing orthographic projections where the z coordinate should
+ be dropped rather than projected.
\sa setMatrix()
*/
-QTransform & QTransform::rotateRadians(qreal a, Qt::Axis axis)
+QTransform & QTransform::rotateRadians(qreal a, Qt::Axis axis, qreal distanceToPlane)
{
#ifndef QT_NO_DEBUG
- if (qIsNaN(a)) {
+ if (qIsNaN(a) || qIsNaN(distanceToPlane)) {
nanWarning("rotateRadians");
return *this;
}
@@ -716,13 +733,16 @@ QTransform & QTransform::rotateRadians(qreal a, Qt::Axis axis)
if (m_dirty < TxRotate)
m_dirty = TxRotate;
} else {
+ if (!qIsNull(distanceToPlane))
+ sina /= distanceToPlane;
+
QTransform result;
if (axis == Qt::YAxis) {
result.m_matrix[0][0] = cosa;
- result.m_matrix[0][2] = -sina * inv_dist_to_plane;
+ result.m_matrix[0][2] = -sina;
} else {
result.m_matrix[1][1] = cosa;
- result.m_matrix[1][2] = -sina * inv_dist_to_plane;
+ result.m_matrix[1][2] = -sina;
}
result.m_type = TxProject;
*this = result * *this;
@@ -730,6 +750,24 @@ QTransform & QTransform::rotateRadians(qreal a, Qt::Axis axis)
return *this;
}
+#if QT_VERSION < QT_VERSION_CHECK(7, 0, 0)
+/*!
+ \overload
+
+ Rotates the coordinate system counterclockwise by the given angle \a a
+ about the specified \a axis at distance 1024.0 from the screen and
+ returns a reference to the matrix.
+
+ \include qtransform.cpp transform-rotate-radians-note
+
+ \sa setMatrix()
+*/
+QTransform &QTransform::rotateRadians(qreal a, Qt::Axis axis)
+{
+ return rotateRadians(a, axis, 1024.0);
+}
+#endif
+
/*!
\fn bool QTransform::operator==(const QTransform &matrix) const
Returns \c true if this matrix is equal to the given \a matrix,
@@ -1107,30 +1145,8 @@ QPoint QTransform::map(const QPoint &p) const
qreal x = 0, y = 0;
TransformationType t = inline_type();
- switch(t) {
- case TxNone:
- x = fx;
- y = fy;
- break;
- case TxTranslate:
- x = fx + m_matrix[2][0];
- y = fy + m_matrix[2][1];
- break;
- case TxScale:
- x = m_matrix[0][0] * fx + m_matrix[2][0];
- y = m_matrix[1][1] * fy + m_matrix[2][1];
- break;
- case TxRotate:
- case TxShear:
- case TxProject:
- x = m_matrix[0][0] * fx + m_matrix[1][0] * fy + m_matrix[2][0];
- y = m_matrix[0][1] * fx + m_matrix[1][1] * fy + m_matrix[2][1];
- if (t == TxProject) {
- qreal w = 1./(m_matrix[0][2] * fx + m_matrix[1][2] * fy + m_matrix[2][2]);
- x *= w;
- y *= w;
- }
- }
+ MAP(fx, fy, x, y);
+
return QPoint(qRound(x), qRound(y));
}
@@ -1158,30 +1174,8 @@ QPointF QTransform::map(const QPointF &p) const
qreal x = 0, y = 0;
TransformationType t = inline_type();
- switch(t) {
- case TxNone:
- x = fx;
- y = fy;
- break;
- case TxTranslate:
- x = fx + m_matrix[2][0];
- y = fy + m_matrix[2][1];
- break;
- case TxScale:
- x = m_matrix[0][0] * fx + m_matrix[2][0];
- y = m_matrix[1][1] * fy + m_matrix[2][1];
- break;
- case TxRotate:
- case TxShear:
- case TxProject:
- x = m_matrix[0][0] * fx + m_matrix[1][0] * fy + m_matrix[2][0];
- y = m_matrix[0][1] * fx + m_matrix[1][1] * fy + m_matrix[2][1];
- if (t == TxProject) {
- qreal w = 1./(m_matrix[0][2] * fx + m_matrix[1][2] * fy + m_matrix[2][2]);
- x *= w;
- y *= w;
- }
- }
+ MAP(fx, fy, x, y);
+
return QPointF(x, y);
}
@@ -1229,41 +1223,9 @@ QLine QTransform::map(const QLine &l) const
qreal x1 = 0, y1 = 0, x2 = 0, y2 = 0;
TransformationType t = inline_type();
- switch(t) {
- case TxNone:
- x1 = fx1;
- y1 = fy1;
- x2 = fx2;
- y2 = fy2;
- break;
- case TxTranslate:
- x1 = fx1 + m_matrix[2][0];
- y1 = fy1 + m_matrix[2][1];
- x2 = fx2 + m_matrix[2][0];
- y2 = fy2 + m_matrix[2][1];
- break;
- case TxScale:
- x1 = m_matrix[0][0] * fx1 + m_matrix[2][0];
- y1 = m_matrix[1][1] * fy1 + m_matrix[2][1];
- x2 = m_matrix[0][0] * fx2 + m_matrix[2][0];
- y2 = m_matrix[1][1] * fy2 + m_matrix[2][1];
- break;
- case TxRotate:
- case TxShear:
- case TxProject:
- x1 = m_matrix[0][0] * fx1 + m_matrix[1][0] * fy1 + m_matrix[2][0];
- y1 = m_matrix[0][1] * fx1 + m_matrix[1][1] * fy1 + m_matrix[2][1];
- x2 = m_matrix[0][0] * fx2 + m_matrix[1][0] * fy2 + m_matrix[2][0];
- y2 = m_matrix[0][1] * fx2 + m_matrix[1][1] * fy2 + m_matrix[2][1];
- if (t == TxProject) {
- qreal w = 1./(m_matrix[0][2] * fx1 + m_matrix[1][2] * fy1 + m_matrix[2][2]);
- x1 *= w;
- y1 *= w;
- w = 1./(m_matrix[0][2] * fx2 + m_matrix[1][2] * fy2 + m_matrix[2][2]);
- x2 *= w;
- y2 *= w;
- }
- }
+ MAP(fx1, fy1, x1, y1);
+ MAP(fx2, fy2, x2, y2);
+
return QLine(qRound(x1), qRound(y1), qRound(x2), qRound(y2));
}
@@ -1288,66 +1250,12 @@ QLineF QTransform::map(const QLineF &l) const
qreal x1 = 0, y1 = 0, x2 = 0, y2 = 0;
TransformationType t = inline_type();
- switch(t) {
- case TxNone:
- x1 = fx1;
- y1 = fy1;
- x2 = fx2;
- y2 = fy2;
- break;
- case TxTranslate:
- x1 = fx1 + m_matrix[2][0];
- y1 = fy1 + m_matrix[2][1];
- x2 = fx2 + m_matrix[2][0];
- y2 = fy2 + m_matrix[2][1];
- break;
- case TxScale:
- x1 = m_matrix[0][0] * fx1 + m_matrix[2][0];
- y1 = m_matrix[1][1] * fy1 + m_matrix[2][1];
- x2 = m_matrix[0][0] * fx2 + m_matrix[2][0];
- y2 = m_matrix[1][1] * fy2 + m_matrix[2][1];
- break;
- case TxRotate:
- case TxShear:
- case TxProject:
- x1 = m_matrix[0][0] * fx1 + m_matrix[1][0] * fy1 + m_matrix[2][0];
- y1 = m_matrix[0][1] * fx1 + m_matrix[1][1] * fy1 + m_matrix[2][1];
- x2 = m_matrix[0][0] * fx2 + m_matrix[1][0] * fy2 + m_matrix[2][0];
- y2 = m_matrix[0][1] * fx2 + m_matrix[1][1] * fy2 + m_matrix[2][1];
- if (t == TxProject) {
- qreal w = 1./(m_matrix[0][2] * fx1 + m_matrix[1][2] * fy1 + m_matrix[2][2]);
- x1 *= w;
- y1 *= w;
- w = 1./(m_matrix[0][2] * fx2 + m_matrix[1][2] * fy2 + m_matrix[2][2]);
- x2 *= w;
- y2 *= w;
- }
- }
- return QLineF(x1, y1, x2, y2);
-}
+ MAP(fx1, fy1, x1, y1);
+ MAP(fx2, fy2, x2, y2);
-static QPolygonF mapProjective(const QTransform &transform, const QPolygonF &poly)
-{
- if (poly.size() == 0)
- return poly;
-
- if (poly.size() == 1)
- return QPolygonF() << transform.map(poly.at(0));
-
- QPainterPath path;
- path.addPolygon(poly);
-
- path = transform.map(path);
-
- QPolygonF result;
- const int elementCount = path.elementCount();
- result.reserve(elementCount);
- for (int i = 0; i < elementCount; ++i)
- result << path.elementAt(i);
- return result;
+ return QLineF(x1, y1, x2, y2);
}
-
/*!
\fn QPolygonF operator *(const QPolygonF &polygon, const QTransform &matrix)
\since 4.3
@@ -1381,9 +1289,6 @@ QPolygonF QTransform::map(const QPolygonF &a) const
if (t <= TxTranslate)
return a.translated(m_matrix[2][0], m_matrix[2][1]);
- if (t >= QTransform::TxProject)
- return mapProjective(*this, a);
-
int size = a.size();
int i;
QPolygonF p(size);
@@ -1411,9 +1316,6 @@ QPolygon QTransform::map(const QPolygon &a) const
if (t <= TxTranslate)
return a.translated(qRound(m_matrix[2][0]), qRound(m_matrix[2][1]));
- if (t >= QTransform::TxProject)
- return mapProjective(*this, QPolygonF(a)).toPolygon();
-
int size = a.size();
int i;
QPolygon p(size);
@@ -1466,16 +1368,16 @@ QRegion QTransform::map(const QRegion &r) const
QRegion res;
if (m11() < 0 || m22() < 0) {
for (const QRect &rect : r)
- res += mapRect(QRectF(rect)).toRect();
+ res += qt_mapFillRect(QRectF(rect), *this);
} else {
QVarLengthArray<QRect, 32> rects;
rects.reserve(r.rectCount());
for (const QRect &rect : r) {
- QRect nr = mapRect(QRectF(rect)).toRect();
+ QRect nr = qt_mapFillRect(QRectF(rect), *this);
if (!nr.isEmpty())
rects.append(nr);
}
- res.setRects(rects.constData(), rects.count());
+ res.setRects(rects.constData(), rects.size());
}
return res;
}
@@ -1704,7 +1606,7 @@ QPolygon QTransform::mapToPolygon(const QRect &rect) const
MAP(rect.x(), bottom, x[3], y[3]);
}
- // all coordinates are correctly, tranform to a pointarray
+ // all coordinates are correctly, transform to a pointarray
// (rounding to the next integer)
a.setPoints(4, qRound(x[0]), qRound(y[0]),
qRound(x[1]), qRound(y[1]),
@@ -1722,7 +1624,7 @@ QPolygon QTransform::mapToPolygon(const QRect &rect) const
*/
bool QTransform::squareToQuad(const QPolygonF &quad, QTransform &trans)
{
- if (quad.count() != 4)
+ if (quad.size() != 4)
return false;
qreal dx0 = quad[0].x();
@@ -1844,14 +1746,6 @@ void QTransform::setMatrix(qreal m11, qreal m12, qreal m13,
m_dirty = TxProject;
}
-static inline bool needsPerspectiveClipping(const QRectF &rect, const QTransform &transform)
-{
- const qreal wx = qMin(transform.m13() * rect.left(), transform.m13() * rect.right());
- const qreal wy = qMin(transform.m23() * rect.top(), transform.m23() * rect.bottom());
-
- return wx + wy + transform.m33() < Q_NEAR_CLIP;
-}
-
QRect QTransform::mapRect(const QRect &rect) const
{
TransformationType t = inline_type();
@@ -1872,8 +1766,7 @@ QRect QTransform::mapRect(const QRect &rect) const
y -= h;
}
return QRect(x, y, w, h);
- } else if (t < TxProject || !needsPerspectiveClipping(rect, *this)) {
- // see mapToPolygon for explanations of the algorithm.
+ } else {
qreal x = 0, y = 0;
MAP(rect.left(), rect.top(), x, y);
qreal xmin = x;
@@ -1895,11 +1788,7 @@ QRect QTransform::mapRect(const QRect &rect) const
ymin = qMin(ymin, y);
xmax = qMax(xmax, x);
ymax = qMax(ymax, y);
- return QRect(qRound(xmin), qRound(ymin), qRound(xmax)-qRound(xmin), qRound(ymax)-qRound(ymin));
- } else {
- QPainterPath path;
- path.addRect(rect);
- return map(path).boundingRect().toRect();
+ return QRectF(xmin, ymin, xmax-xmin, ymax-ymin).toRect();
}
}
@@ -1942,7 +1831,7 @@ QRectF QTransform::mapRect(const QRectF &rect) const
y -= h;
}
return QRectF(x, y, w, h);
- } else if (t < TxProject || !needsPerspectiveClipping(rect, *this)) {
+ } else {
qreal x = 0, y = 0;
MAP(rect.x(), rect.y(), x, y);
qreal xmin = x;
@@ -1965,10 +1854,6 @@ QRectF QTransform::mapRect(const QRectF &rect) const
xmax = qMax(xmax, x);
ymax = qMax(ymax, y);
return QRectF(xmin, ymin, xmax-xmin, ymax - ymin);
- } else {
- QPainterPath path;
- path.addRect(rect);
- return map(path).boundingRect();
}
}
@@ -2033,7 +1918,7 @@ void QTransform::map(int x, int y, int *tx, int *ty) const
*/
QTransform::TransformationType QTransform::type() const
{
- if(m_dirty == TxNone || m_dirty < m_type)
+ if (m_dirty == TxNone || m_dirty < m_type)
return static_cast<TransformationType>(m_type);
switch (static_cast<TransformationType>(m_dirty)) {
@@ -2046,7 +1931,7 @@ QTransform::TransformationType QTransform::type() const
case TxShear:
case TxRotate:
if (!qFuzzyIsNull(m_matrix[0][1]) || !qFuzzyIsNull(m_matrix[1][0])) {
- const qreal dot = m_matrix[0][0] * m_matrix[0][1] + m_matrix[1][0] * m_matrix[1][1];
+ const qreal dot = m_matrix[0][0] * m_matrix[1][0] + m_matrix[0][1] * m_matrix[1][1];
if (qFuzzyIsNull(dot))
m_type = TxRotate;
else
@@ -2081,7 +1966,7 @@ QTransform::TransformationType QTransform::type() const
*/
QTransform::operator QVariant() const
{
- return QVariant(QMetaType::QTransform, this);
+ return QVariant::fromValue(*this);
}