author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Wed, 18 Aug 2010 10:37:55 +0300 | |
changeset 33 | 3e2da88830cd |
parent 18 | 2f34d5167611 |
permissions | -rw-r--r-- |
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/**************************************************************************** |
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** |
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2f34d5167611
Revision: 201011
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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changeset
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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** All rights reserved. |
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** Contact: Nokia Corporation (qt-info@nokia.com) |
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** |
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** This file is part of the QtGui module of the Qt Toolkit. |
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** |
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** $QT_BEGIN_LICENSE:LGPL$ |
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** No Commercial Usage |
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** This file contains pre-release code and may not be distributed. |
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** You may use this file in accordance with the terms and conditions |
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** contained in the Technology Preview License Agreement accompanying |
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** this package. |
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** |
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** GNU Lesser General Public License Usage |
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** Alternatively, this file may be used under the terms of the GNU Lesser |
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** General Public License version 2.1 as published by the Free Software |
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** Foundation and appearing in the file LICENSE.LGPL included in the |
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** packaging of this file. Please review the following information to |
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** ensure the GNU Lesser General Public License version 2.1 requirements |
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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** |
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** In addition, as a special exception, Nokia gives you certain additional |
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** rights. These rights are described in the Nokia Qt LGPL Exception |
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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** |
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** If you have questions regarding the use of this file, please contact |
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** Nokia at qt-info@nokia.com. |
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** |
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** |
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** |
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** |
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** |
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** |
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** |
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** |
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** $QT_END_LICENSE$ |
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** |
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****************************************************************************/ |
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#ifndef QFIXED_P_H |
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#define QFIXED_P_H |
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// |
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// W A R N I N G |
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// ------------- |
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// |
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// This file is not part of the Qt API. It exists for the convenience |
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// of other Qt classes. This header file may change from version to |
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// version without notice, or even be removed. |
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// |
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// We mean it. |
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// |
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#include "QtCore/qdebug.h" |
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#include "QtCore/qpoint.h" |
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#include "QtCore/qsize.h" |
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QT_BEGIN_NAMESPACE |
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struct QFixed { |
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public: |
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QFixed() : val(0) {} |
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QFixed(int i) : val(i<<6) {} |
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QFixed(long i) : val(i<<6) {} |
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QFixed &operator=(int i) { val = (i<<6); return *this; } |
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QFixed &operator=(long i) { val = (i<<6); return *this; } |
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static QFixed fromReal(qreal r) { QFixed f; f.val = (int)(r*qreal(64)); return f; } |
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static QFixed fromFixed(int fixed) { QFixed f; f.val = fixed; return f; } |
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inline int value() const { return val; } |
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inline void setValue(int value) { val = value; } |
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inline int toInt() const { return (((val)+32) & -64)>>6; } |
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inline qreal toReal() const { return ((qreal)val)/(qreal)64; } |
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inline int truncate() const { return val>>6; } |
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inline QFixed round() const { QFixed f; f.val = ((val)+32) & -64; return f; } |
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inline QFixed floor() const { QFixed f; f.val = (val) & -64; return f; } |
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inline QFixed ceil() const { QFixed f; f.val = (val+63) & -64; return f; } |
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inline QFixed operator+(int i) const { QFixed f; f.val = (val + (i<<6)); return f; } |
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inline QFixed operator+(uint i) const { QFixed f; f.val = (val + (i<<6)); return f; } |
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inline QFixed operator+(const QFixed &other) const { QFixed f; f.val = (val + other.val); return f; } |
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inline QFixed &operator+=(int i) { val += (i<<6); return *this; } |
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inline QFixed &operator+=(uint i) { val += (i<<6); return *this; } |
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inline QFixed &operator+=(const QFixed &other) { val += other.val; return *this; } |
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inline QFixed operator-(int i) const { QFixed f; f.val = (val - (i<<6)); return f; } |
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inline QFixed operator-(uint i) const { QFixed f; f.val = (val - (i<<6)); return f; } |
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inline QFixed operator-(const QFixed &other) const { QFixed f; f.val = (val - other.val); return f; } |
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inline QFixed &operator-=(int i) { val -= (i<<6); return *this; } |
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inline QFixed &operator-=(uint i) { val -= (i<<6); return *this; } |
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inline QFixed &operator-=(const QFixed &other) { val -= other.val; return *this; } |
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inline QFixed operator-() const { QFixed f; f.val = -val; return f; } |
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inline bool operator==(const QFixed &other) const { return val == other.val; } |
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inline bool operator!=(const QFixed &other) const { return val != other.val; } |
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inline bool operator<(const QFixed &other) const { return val < other.val; } |
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inline bool operator>(const QFixed &other) const { return val > other.val; } |
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inline bool operator<=(const QFixed &other) const { return val <= other.val; } |
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inline bool operator>=(const QFixed &other) const { return val >= other.val; } |
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inline bool operator!() const { return !val; } |
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inline QFixed &operator/=(int x) { val /= x; return *this; } |
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inline QFixed &operator/=(const QFixed &o) { |
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if (o.val == 0) { |
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val = 0x7FFFFFFFL; |
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} else { |
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bool neg = false; |
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qint64 a = val; |
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qint64 b = o.val; |
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if (a < 0) { a = -a; neg = true; } |
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if (b < 0) { b = -b; neg = !neg; } |
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int res = (int)(((a << 6) + (b >> 1)) / b); |
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val = (neg ? -res : res); |
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} |
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return *this; |
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} |
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inline QFixed operator/(int d) const { QFixed f; f.val = val/d; return f; } |
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inline QFixed operator/(QFixed b) const { QFixed f = *this; return (f /= b); } |
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inline QFixed operator>>(int d) const { QFixed f = *this; f.val >>= d; return f; } |
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inline QFixed &operator*=(int i) { val *= i; return *this; } |
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inline QFixed &operator*=(uint i) { val *= i; return *this; } |
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inline QFixed &operator*=(const QFixed &o) { |
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bool neg = false; |
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qint64 a = val; |
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qint64 b = o.val; |
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if (a < 0) { a = -a; neg = true; } |
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if (b < 0) { b = -b; neg = !neg; } |
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int res = (int)((a * b + 0x20L) >> 6); |
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val = neg ? -res : res; |
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return *this; |
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} |
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inline QFixed operator*(int i) const { QFixed f = *this; return (f *= i); } |
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inline QFixed operator*(uint i) const { QFixed f = *this; return (f *= i); } |
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inline QFixed operator*(const QFixed &o) const { QFixed f = *this; return (f *= o); } |
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private: |
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QFixed(qreal i) : val((int)(i*qreal(64))) {} |
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QFixed &operator=(qreal i) { val = (int)(i*qreal(64)); return *this; } |
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inline QFixed operator+(qreal i) const { QFixed f; f.val = (val + (int)(i*qreal(64))); return f; } |
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inline QFixed &operator+=(qreal i) { val += (int)(i*64); return *this; } |
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inline QFixed operator-(qreal i) const { QFixed f; f.val = (val - (int)(i*qreal(64))); return f; } |
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inline QFixed &operator-=(qreal i) { val -= (int)(i*64); return *this; } |
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inline QFixed &operator/=(qreal r) { val = (int)(val/r); return *this; } |
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inline QFixed operator/(qreal d) const { QFixed f; f.val = (int)(val/d); return f; } |
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inline QFixed &operator*=(qreal d) { val = (int) (val*d); return *this; } |
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inline QFixed operator*(qreal d) const { QFixed f = *this; return (f *= d); } |
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int val; |
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}; |
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Q_DECLARE_TYPEINFO(QFixed, Q_PRIMITIVE_TYPE); |
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#define QFIXED_MAX (INT_MAX/256) |
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inline int qRound(const QFixed &f) { return f.toInt(); } |
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inline int qFloor(const QFixed &f) { return f.floor().truncate(); } |
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inline QFixed operator*(int i, const QFixed &d) { return d*i; } |
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inline QFixed operator+(int i, const QFixed &d) { return d+i; } |
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inline QFixed operator-(int i, const QFixed &d) { return -(d-i); } |
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inline QFixed operator*(uint i, const QFixed &d) { return d*i; } |
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inline QFixed operator+(uint i, const QFixed &d) { return d+i; } |
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inline QFixed operator-(uint i, const QFixed &d) { return -(d-i); } |
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// inline QFixed operator*(qreal d, const QFixed &d2) { return d2*d; } |
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inline bool operator==(const QFixed &f, int i) { return f.value() == (i<<6); } |
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inline bool operator==(int i, const QFixed &f) { return f.value() == (i<<6); } |
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inline bool operator!=(const QFixed &f, int i) { return f.value() != (i<<6); } |
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inline bool operator!=(int i, const QFixed &f) { return f.value() != (i<<6); } |
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inline bool operator<=(const QFixed &f, int i) { return f.value() <= (i<<6); } |
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inline bool operator<=(int i, const QFixed &f) { return (i<<6) <= f.value(); } |
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inline bool operator>=(const QFixed &f, int i) { return f.value() >= (i<<6); } |
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inline bool operator>=(int i, const QFixed &f) { return (i<<6) >= f.value(); } |
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inline bool operator<(const QFixed &f, int i) { return f.value() < (i<<6); } |
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inline bool operator<(int i, const QFixed &f) { return (i<<6) < f.value(); } |
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inline bool operator>(const QFixed &f, int i) { return f.value() > (i<<6); } |
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inline bool operator>(int i, const QFixed &f) { return (i<<6) > f.value(); } |
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#ifndef QT_NO_DEBUG_STREAM |
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inline QDebug &operator<<(QDebug &dbg, const QFixed &f) |
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{ return dbg << f.toReal(); } |
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#endif |
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struct QFixedPoint { |
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QFixed x; |
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QFixed y; |
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inline QFixedPoint() {} |
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inline QFixedPoint(const QFixed &_x, const QFixed &_y) : x(_x), y(_y) {} |
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QPointF toPointF() const { return QPointF(x.toReal(), y.toReal()); } |
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static QFixedPoint fromPointF(const QPointF &p) { |
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return QFixedPoint(QFixed::fromReal(p.x()), QFixed::fromReal(p.y())); |
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} |
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}; |
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Q_DECLARE_TYPEINFO(QFixedPoint, Q_PRIMITIVE_TYPE); |
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inline QFixedPoint operator-(const QFixedPoint &p1, const QFixedPoint &p2) |
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{ return QFixedPoint(p1.x - p2.x, p1.y - p2.y); } |
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inline QFixedPoint operator+(const QFixedPoint &p1, const QFixedPoint &p2) |
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{ return QFixedPoint(p1.x + p2.x, p1.y + p2.y); } |
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struct QFixedSize { |
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QFixed width; |
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QFixed height; |
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QSizeF toSizeF() const { return QSizeF(width.toReal(), height.toReal()); } |
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static QFixedSize fromSizeF(const QSizeF &s) { |
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QFixedSize size; |
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size.width = QFixed::fromReal(s.width()); |
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size.height = QFixed::fromReal(s.height()); |
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return size; |
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} |
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}; |
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Q_DECLARE_TYPEINFO(QFixedSize, Q_PRIMITIVE_TYPE); |
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QT_END_NAMESPACE |
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#endif // QTEXTENGINE_P_H |