| /**************************************************************************** |
| ** |
| ** Copyright (C) 2015 The Qt Company Ltd. |
| ** Contact: http://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtGui module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL21$ |
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| ** GNU Lesser General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU Lesser |
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| ****************************************************************************/ |
| |
| #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 { |
| private: |
| Q_DECL_CONSTEXPR QFixed(int val, int) : val(val) {} // 2nd int is just a dummy for disambiguation |
| public: |
| Q_DECL_CONSTEXPR QFixed() : val(0) {} |
| Q_DECL_CONSTEXPR QFixed(int i) : val(i * 64) {} |
| Q_DECL_CONSTEXPR QFixed(long i) : val(i * 64) {} |
| QFixed &operator=(int i) { val = i * 64; return *this; } |
| QFixed &operator=(long i) { val = i * 64; return *this; } |
| |
| Q_DECL_CONSTEXPR static QFixed fromReal(qreal r) { return fromFixed((int)(r*qreal(64))); } |
| Q_DECL_CONSTEXPR static QFixed fromFixed(int fixed) { return QFixed(fixed,0); } // uses private ctor |
| |
| Q_DECL_CONSTEXPR inline int value() const { return val; } |
| inline void setValue(int value) { val = value; } |
| |
| Q_DECL_CONSTEXPR inline int toInt() const { return (((val)+32) & -64)>>6; } |
| Q_DECL_CONSTEXPR inline qreal toReal() const { return ((qreal)val)/(qreal)64; } |
| |
| Q_DECL_CONSTEXPR inline int truncate() const { return val>>6; } |
| Q_DECL_CONSTEXPR inline QFixed round() const { return fromFixed(((val)+32) & -64); } |
| Q_DECL_CONSTEXPR inline QFixed floor() const { return fromFixed((val) & -64); } |
| Q_DECL_CONSTEXPR inline QFixed ceil() const { return fromFixed((val+63) & -64); } |
| |
| Q_DECL_CONSTEXPR inline QFixed operator+(int i) const { return fromFixed(val + i * 64); } |
| Q_DECL_CONSTEXPR inline QFixed operator+(uint i) const { return fromFixed((val + (i<<6))); } |
| Q_DECL_CONSTEXPR inline QFixed operator+(const QFixed &other) const { return fromFixed((val + other.val)); } |
| inline QFixed &operator+=(int i) { val += i * 64; return *this; } |
| inline QFixed &operator+=(uint i) { val += (i<<6); return *this; } |
| inline QFixed &operator+=(const QFixed &other) { val += other.val; return *this; } |
| Q_DECL_CONSTEXPR inline QFixed operator-(int i) const { return fromFixed(val - i * 64); } |
| Q_DECL_CONSTEXPR inline QFixed operator-(uint i) const { return fromFixed((val - (i<<6))); } |
| Q_DECL_CONSTEXPR inline QFixed operator-(const QFixed &other) const { return fromFixed((val - other.val)); } |
| inline QFixed &operator-=(int i) { val -= i * 64; return *this; } |
| inline QFixed &operator-=(uint i) { val -= (i<<6); return *this; } |
| inline QFixed &operator-=(const QFixed &other) { val -= other.val; return *this; } |
| Q_DECL_CONSTEXPR inline QFixed operator-() const { return fromFixed(-val); } |
| |
| Q_DECL_CONSTEXPR inline bool operator==(const QFixed &other) const { return val == other.val; } |
| Q_DECL_CONSTEXPR inline bool operator!=(const QFixed &other) const { return val != other.val; } |
| Q_DECL_CONSTEXPR inline bool operator<(const QFixed &other) const { return val < other.val; } |
| Q_DECL_CONSTEXPR inline bool operator>(const QFixed &other) const { return val > other.val; } |
| Q_DECL_CONSTEXPR inline bool operator<=(const QFixed &other) const { return val <= other.val; } |
| Q_DECL_CONSTEXPR inline bool operator>=(const QFixed &other) const { return val >= other.val; } |
| Q_DECL_CONSTEXPR 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; |
| } |
| Q_DECL_CONSTEXPR inline QFixed operator/(int d) const { return fromFixed(val/d); } |
| 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; |
| } |
| Q_DECL_CONSTEXPR inline QFixed operator*(int i) const { return fromFixed(val * i); } |
| Q_DECL_CONSTEXPR inline QFixed operator*(uint i) const { return fromFixed(val * i); } |
| inline QFixed operator*(const QFixed &o) const { QFixed f = *this; return (f *= o); } |
| |
| private: |
| Q_DECL_CONSTEXPR QFixed(qreal i) : val((int)(i*qreal(64))) {} |
| QFixed &operator=(qreal i) { val = (int)(i*qreal(64)); return *this; } |
| Q_DECL_CONSTEXPR inline QFixed operator+(qreal i) const { return fromFixed((val + (int)(i*qreal(64)))); } |
| inline QFixed &operator+=(qreal i) { val += (int)(i*64); return *this; } |
| Q_DECL_CONSTEXPR inline QFixed operator-(qreal i) const { return fromFixed((val - (int)(i*qreal(64)))); } |
| inline QFixed &operator-=(qreal i) { val -= (int)(i*64); return *this; } |
| inline QFixed &operator/=(qreal r) { val = (int)(val/r); return *this; } |
| Q_DECL_CONSTEXPR inline QFixed operator/(qreal d) const { return fromFixed((int)(val/d)); } |
| inline QFixed &operator*=(qreal d) { val = (int) (val*d); return *this; } |
| Q_DECL_CONSTEXPR inline QFixed operator*(qreal d) const { return fromFixed((int) (val*d)); } |
| int val; |
| }; |
| Q_DECLARE_TYPEINFO(QFixed, Q_PRIMITIVE_TYPE); |
| |
| #define QFIXED_MAX (INT_MAX/256) |
| |
| Q_DECL_CONSTEXPR inline int qRound(const QFixed &f) { return f.toInt(); } |
| Q_DECL_CONSTEXPR inline int qFloor(const QFixed &f) { return f.floor().truncate(); } |
| |
| Q_DECL_CONSTEXPR inline QFixed operator*(int i, const QFixed &d) { return d*i; } |
| Q_DECL_CONSTEXPR inline QFixed operator+(int i, const QFixed &d) { return d+i; } |
| Q_DECL_CONSTEXPR inline QFixed operator-(int i, const QFixed &d) { return -(d-i); } |
| Q_DECL_CONSTEXPR inline QFixed operator*(uint i, const QFixed &d) { return d*i; } |
| Q_DECL_CONSTEXPR inline QFixed operator+(uint i, const QFixed &d) { return d+i; } |
| Q_DECL_CONSTEXPR inline QFixed operator-(uint i, const QFixed &d) { return -(d-i); } |
| // Q_DECL_CONSTEXPR inline QFixed operator*(qreal d, const QFixed &d2) { return d2*d; } |
| |
| Q_DECL_CONSTEXPR inline bool operator==(const QFixed &f, int i) { return f.value() == i * 64; } |
| Q_DECL_CONSTEXPR inline bool operator==(int i, const QFixed &f) { return f.value() == i * 64; } |
| Q_DECL_CONSTEXPR inline bool operator!=(const QFixed &f, int i) { return f.value() != i * 64; } |
| Q_DECL_CONSTEXPR inline bool operator!=(int i, const QFixed &f) { return f.value() != i * 64; } |
| Q_DECL_CONSTEXPR inline bool operator<=(const QFixed &f, int i) { return f.value() <= i * 64; } |
| Q_DECL_CONSTEXPR inline bool operator<=(int i, const QFixed &f) { return i * 64 <= f.value(); } |
| Q_DECL_CONSTEXPR inline bool operator>=(const QFixed &f, int i) { return f.value() >= i * 64; } |
| Q_DECL_CONSTEXPR inline bool operator>=(int i, const QFixed &f) { return i * 64 >= f.value(); } |
| Q_DECL_CONSTEXPR inline bool operator<(const QFixed &f, int i) { return f.value() < i * 64; } |
| Q_DECL_CONSTEXPR inline bool operator<(int i, const QFixed &f) { return i * 64 < f.value(); } |
| Q_DECL_CONSTEXPR inline bool operator>(const QFixed &f, int i) { return f.value() > i * 64; } |
| Q_DECL_CONSTEXPR inline bool operator>(int i, const QFixed &f) { return i * 64 > f.value(); } |
| |
| #ifndef QT_NO_DEBUG_STREAM |
| inline QDebug &operator<<(QDebug &dbg, const QFixed &f) |
| { return dbg << f.toReal(); } |
| #endif |
| |
| struct QFixedPoint { |
| QFixed x; |
| QFixed y; |
| Q_DECL_CONSTEXPR inline QFixedPoint() {} |
| Q_DECL_CONSTEXPR inline QFixedPoint(const QFixed &_x, const QFixed &_y) : x(_x), y(_y) {} |
| Q_DECL_CONSTEXPR QPointF toPointF() const { return QPointF(x.toReal(), y.toReal()); } |
| Q_DECL_CONSTEXPR static QFixedPoint fromPointF(const QPointF &p) { |
| return QFixedPoint(QFixed::fromReal(p.x()), QFixed::fromReal(p.y())); |
| } |
| }; |
| Q_DECLARE_TYPEINFO(QFixedPoint, Q_PRIMITIVE_TYPE); |
| |
| Q_DECL_CONSTEXPR inline QFixedPoint operator-(const QFixedPoint &p1, const QFixedPoint &p2) |
| { return QFixedPoint(p1.x - p2.x, p1.y - p2.y); } |
| Q_DECL_CONSTEXPR 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; |
| Q_DECL_CONSTEXPR QFixedSize() {} |
| Q_DECL_CONSTEXPR QFixedSize(QFixed _width, QFixed _height) : width(_width), height(_height) {} |
| Q_DECL_CONSTEXPR QSizeF toSizeF() const { return QSizeF(width.toReal(), height.toReal()); } |
| Q_DECL_CONSTEXPR static QFixedSize fromSizeF(const QSizeF &s) { |
| return QFixedSize(QFixed::fromReal(s.width()), QFixed::fromReal(s.height())); |
| } |
| }; |
| Q_DECLARE_TYPEINFO(QFixedSize, Q_PRIMITIVE_TYPE); |
| |
| QT_END_NAMESPACE |
| |
| #endif // QTEXTENGINE_P_H |