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author | axis <qt-info@nokia.com> | 2009-04-24 11:34:15 (GMT) |
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committer | axis <qt-info@nokia.com> | 2009-04-24 11:34:15 (GMT) |
commit | 8f427b2b914d5b575a4a7c0ed65d2fb8f45acc76 (patch) | |
tree | a17e1a767a89542ab59907462206d7dcf2e504b2 /src/gui/painting/qfixed_p.h | |
download | Qt-8f427b2b914d5b575a4a7c0ed65d2fb8f45acc76.zip Qt-8f427b2b914d5b575a4a7c0ed65d2fb8f45acc76.tar.gz Qt-8f427b2b914d5b575a4a7c0ed65d2fb8f45acc76.tar.bz2 |
Long live Qt for S60!
Diffstat (limited to 'src/gui/painting/qfixed_p.h')
-rw-r--r-- | src/gui/painting/qfixed_p.h | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/src/gui/painting/qfixed_p.h b/src/gui/painting/qfixed_p.h new file mode 100644 index 0000000..2e49615 --- /dev/null +++ b/src/gui/painting/qfixed_p.h @@ -0,0 +1,219 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QFIXED_P_H +#define QFIXED_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists for the convenience +// of other Qt classes. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include "QtCore/qdebug.h" +#include "QtCore/qpoint.h" +#include "QtCore/qsize.h" + +QT_BEGIN_NAMESPACE + +struct QFixed { +public: + QFixed() : val(0) {} + QFixed(int i) : val(i<<6) {} + QFixed(long i) : val(i<<6) {} + QFixed &operator=(int i) { val = (i<<6); return *this; } + QFixed &operator=(long i) { val = (i<<6); return *this; } + + static QFixed fromReal(qreal r) { QFixed f; f.val = (int)(r*qreal(64)); return f; } + static QFixed fromFixed(int fixed) { QFixed f; f.val = fixed; return f; } + + inline int value() const { return val; } + inline void setValue(int value) { val = value; } + + inline int toInt() const { return (((val)+32) & -64)>>6; } + inline qreal toReal() const { return ((qreal)val)/(qreal)64; } + + inline int truncate() const { return val>>6; } + inline QFixed round() const { QFixed f; f.val = ((val)+32) & -64; return f; } + inline QFixed floor() const { QFixed f; f.val = (val) & -64; return f; } + inline QFixed ceil() const { QFixed f; f.val = (val+63) & -64; return f; } + + inline QFixed operator+(int i) const { QFixed f; f.val = (val + (i<<6)); return f; } + inline QFixed operator+(uint i) const { QFixed f; f.val = (val + (i<<6)); return f; } + inline QFixed operator+(const QFixed &other) const { QFixed f; f.val = (val + other.val); return f; } + inline QFixed &operator+=(int i) { val += (i<<6); return *this; } + inline QFixed &operator+=(uint i) { val += (i<<6); return *this; } + inline QFixed &operator+=(const QFixed &other) { val += other.val; return *this; } + inline QFixed operator-(int i) const { QFixed f; f.val = (val - (i<<6)); return f; } + inline QFixed operator-(uint i) const { QFixed f; f.val = (val - (i<<6)); return f; } + inline QFixed operator-(const QFixed &other) const { QFixed f; f.val = (val - other.val); return f; } + inline QFixed &operator-=(int i) { val -= (i<<6); return *this; } + inline QFixed &operator-=(uint i) { val -= (i<<6); return *this; } + inline QFixed &operator-=(const QFixed &other) { val -= other.val; return *this; } + inline QFixed operator-() const { QFixed f; f.val = -val; return f; } + + inline bool operator==(const QFixed &other) const { return val == other.val; } + inline bool operator!=(const QFixed &other) const { return val != other.val; } + inline bool operator<(const QFixed &other) const { return val < other.val; } + inline bool operator>(const QFixed &other) const { return val > other.val; } + inline bool operator<=(const QFixed &other) const { return val <= other.val; } + inline bool operator>=(const QFixed &other) const { return val >= other.val; } + inline bool operator!() const { return !val; } + + inline QFixed &operator/=(int x) { val /= x; return *this; } + inline QFixed &operator/=(const QFixed &o) { + if (o.val == 0) { + val = 0x7FFFFFFFL; + } else { + bool neg = false; + qint64 a = val; + qint64 b = o.val; + if (a < 0) { a = -a; neg = true; } + if (b < 0) { b = -b; neg = !neg; } + + int res = (int)(((a << 6) + (b >> 1)) / b); + + val = (neg ? -res : res); + } + return *this; + } + inline QFixed operator/(int d) const { QFixed f; f.val = val/d; return f; } + inline QFixed operator/(QFixed b) const { QFixed f = *this; return (f /= b); } + inline QFixed operator>>(int d) const { QFixed f = *this; f.val >>= d; return f; } + inline QFixed &operator*=(int i) { val *= i; return *this; } + inline QFixed &operator*=(uint i) { val *= i; return *this; } + inline QFixed &operator*=(const QFixed &o) { + bool neg = false; + qint64 a = val; + qint64 b = o.val; + if (a < 0) { a = -a; neg = true; } + if (b < 0) { b = -b; neg = !neg; } + + int res = (int)((a * b + 0x20L) >> 6); + val = neg ? -res : res; + return *this; + } + inline QFixed operator*(int i) const { QFixed f = *this; return (f *= i); } + inline QFixed operator*(uint i) const { QFixed f = *this; return (f *= i); } + inline QFixed operator*(const QFixed &o) const { QFixed f = *this; return (f *= o); } + +private: + QFixed(qreal i) : val((int)(i*qreal(64))) {} + QFixed &operator=(qreal i) { val = (int)(i*qreal(64)); return *this; } + inline QFixed operator+(qreal i) const { QFixed f; f.val = (val + (int)(i*qreal(64))); return f; } + inline QFixed &operator+=(qreal i) { val += (int)(i*64); return *this; } + inline QFixed operator-(qreal i) const { QFixed f; f.val = (val - (int)(i*qreal(64))); return f; } + inline QFixed &operator-=(qreal i) { val -= (int)(i*64); return *this; } + inline QFixed &operator/=(qreal r) { val = (int)(val/r); return *this; } + inline QFixed operator/(qreal d) const { QFixed f; f.val = (int)(val/d); return f; } + inline QFixed &operator*=(qreal d) { val = (int) (val*d); return *this; } + inline QFixed operator*(qreal d) const { QFixed f = *this; return (f *= d); } + int val; +}; +Q_DECLARE_TYPEINFO(QFixed, Q_PRIMITIVE_TYPE); + +#define QFIXED_MAX (INT_MAX/256) + +inline int qRound(const QFixed &f) { return f.toInt(); } +inline int qFloor(const QFixed &f) { return f.floor().truncate(); } + +inline QFixed operator*(int i, const QFixed &d) { return d*i; } +inline QFixed operator+(int i, const QFixed &d) { return d+i; } +inline QFixed operator-(int i, const QFixed &d) { return -(d-i); } +inline QFixed operator*(uint i, const QFixed &d) { return d*i; } +inline QFixed operator+(uint i, const QFixed &d) { return d+i; } +inline QFixed operator-(uint i, const QFixed &d) { return -(d-i); } +// inline QFixed operator*(qreal d, const QFixed &d2) { return d2*d; } + +inline bool operator==(const QFixed &f, int i) { return f.value() == (i<<6); } +inline bool operator==(int i, const QFixed &f) { return f.value() == (i<<6); } +inline bool operator!=(const QFixed &f, int i) { return f.value() != (i<<6); } +inline bool operator!=(int i, const QFixed &f) { return f.value() != (i<<6); } +inline bool operator<=(const QFixed &f, int i) { return f.value() <= (i<<6); } +inline bool operator<=(int i, const QFixed &f) { return (i<<6) <= f.value(); } +inline bool operator>=(const QFixed &f, int i) { return f.value() >= (i<<6); } +inline bool operator>=(int i, const QFixed &f) { return (i<<6) >= f.value(); } +inline bool operator<(const QFixed &f, int i) { return f.value() < (i<<6); } +inline bool operator<(int i, const QFixed &f) { return (i<<6) < f.value(); } +inline bool operator>(const QFixed &f, int i) { return f.value() > (i<<6); } +inline bool operator>(int i, const QFixed &f) { return (i<<6) > f.value(); } + +inline QDebug &operator<<(QDebug &dbg, const QFixed &f) +{ return dbg << f.toReal(); } + +struct QFixedPoint { + QFixed x; + QFixed y; + inline QFixedPoint() {} + inline QFixedPoint(const QFixed &_x, const QFixed &_y) : x(_x), y(_y) {} + QPointF toPointF() const { return QPointF(x.toReal(), y.toReal()); } + static QFixedPoint fromPointF(const QPointF &p) { + return QFixedPoint(QFixed::fromReal(p.x()), QFixed::fromReal(p.y())); + } +}; +Q_DECLARE_TYPEINFO(QFixedPoint, Q_PRIMITIVE_TYPE); + +inline QFixedPoint operator-(const QFixedPoint &p1, const QFixedPoint &p2) +{ return QFixedPoint(p1.x - p2.x, p1.y - p2.y); } +inline QFixedPoint operator+(const QFixedPoint &p1, const QFixedPoint &p2) +{ return QFixedPoint(p1.x + p2.x, p1.y + p2.y); } + +struct QFixedSize { + QFixed width; + QFixed height; + QSizeF toSizeF() const { return QSizeF(width.toReal(), height.toReal()); } + static QFixedSize fromSizeF(const QSizeF &s) { + QFixedSize size; + size.width = QFixed::fromReal(s.width()); + size.height = QFixed::fromReal(s.height()); + return size; + } +}; +Q_DECLARE_TYPEINFO(QFixedSize, Q_PRIMITIVE_TYPE); + +QT_END_NAMESPACE + +#endif // QTEXTENGINE_P_H |