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222 lines
9.8 KiB
222 lines
9.8 KiB
/****************************************************************************
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**
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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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** Commercial Usage
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Nokia.
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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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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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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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** $QT_END_LICENSE$
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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
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