Public Types

enum BorderFlag { IncludeBorders = 0x00, ExcludeMinimum = 0x01, ExcludeMaximum = 0x02, ExcludeBorders = ExcludeMinimum | ExcludeMaximum }
typedef QFlags< BorderFlag > BorderFlags
Border flags.

Public Member Functions

QwtInterval ()
Default Constructor. QwtInterval (double minValue, double maxValue, BorderFlags=IncludeBorders)
void setInterval (double minValue, double maxValue, BorderFlags=IncludeBorders)
QwtInterval normalized () const
Normalize the limits of the interval. QwtInterval inverted () const
QwtInterval limited (double lowerBound, double upperBound) const
bool operator== (const QwtInterval &) const
Compare two intervals. bool operator!= (const QwtInterval &) const
Compare two intervals. void setBorderFlags (BorderFlags)
BorderFlags borderFlags () const
double minValue () const
double maxValue () const
double width () const
Return the width of an interval. long double widthL () const
Return the width of an interval as long double. void setMinValue (double)
void setMaxValue (double)
bool contains (double value) const
bool contains (const QwtInterval &) const
bool intersects (const QwtInterval &) const
Test if two intervals overlap. QwtInterval intersect (const QwtInterval &) const
Intersect 2 intervals. QwtInterval unite (const QwtInterval &) const
Unite 2 intervals. QwtInterval operator| (const QwtInterval &) const
QwtInterval operator& (const QwtInterval &) const
Intersection of two intervals. QwtInterval & operator|= (const QwtInterval &)
Unite this interval with the given interval. QwtInterval & operator&= (const QwtInterval &)
Intersect this interval with the given interval. QwtInterval extend (double value) const
Extend the interval. QwtInterval operator| (double) const
QwtInterval & operator|= (double)
bool isValid () const
bool isNull () const
void invalidate ()
QwtInterval symmetrize (double value) const

typedef QFlags<BorderFlag > QwtInterval::BorderFlags

Border flags. An ORed combination of BorderFlag values.

Definition at line 45 of file qwt_interval.h.

enum QwtInterval::BorderFlag

Flag indicating if a border is included or excluded

See also

Enumerator

IncludeBorders

Min/Max values are inside the interval.

ExcludeMinimum

Min value is not included in the interval.

ExcludeMaximum

Max value is not included in the interval.

ExcludeBorders

Min/Max values are not included in the interval.

Definition at line 29 of file qwt_interval.h.

QwtInterval::QwtInterval () [inline]

Default Constructor. Creates an invalid interval [0.0, -1.0]

See also

Definition at line 112 of file qwt_interval.h.

QwtInterval::QwtInterval (double minValue, double maxValue, BorderFlags borderFlags = IncludeBorders) [inline]

Constructor

Build an interval with from min/max values

Parameters

Definition at line 128 of file qwt_interval.h.

QwtInterval::BorderFlags QwtInterval::borderFlags () const [inline]

Returns

See also

Definition at line 166 of file qwt_interval.h.

bool QwtInterval::contains (const QwtInterval & interval) const

Test if an interval is inside an interval

Parameters

Returns

Definition at line 90 of file qwt_interval.cpp.

bool QwtInterval::contains (double value) const

Test if a value is inside an interval

Parameters

Returns

Definition at line 67 of file qwt_interval.cpp.

QwtInterval QwtInterval::extend (double value) const

Extend the interval. If value is below minValue(), value becomes the lower limit. If value is above maxValue(), value becomes the upper limit.

extend() has no effect for invalid intervals

Parameters

Returns

See also

Definition at line 363 of file qwt_interval.cpp.

QwtInterval QwtInterval::intersect (const QwtInterval & other) const

Intersect 2 intervals.

Parameters

Returns

Definition at line 186 of file qwt_interval.cpp.

bool QwtInterval::intersects (const QwtInterval & other) const

Test if two intervals overlap.

Parameters

Returns

Definition at line 277 of file qwt_interval.cpp.

void QwtInterval::invalidate () [inline]

Invalidate the interval

The limits are set to interval [0.0, -1.0]

See also

Definition at line 325 of file qwt_interval.h.

QwtInterval QwtInterval::inverted () const

Invert the limits of the interval

Returns

See also

Definition at line 48 of file qwt_interval.cpp.

bool QwtInterval::isNull () const [inline]

Returns

Definition at line 314 of file qwt_interval.h.

bool QwtInterval::isValid () const [inline]

A interval is valid when minValue() <= maxValue(). In case of QwtInterval::ExcludeBorders it is true when minValue() < maxValue()

Returns

Definition at line 210 of file qwt_interval.h.

QwtInterval QwtInterval::limited (double lowerBound, double upperBound) const

Limit the interval, keeping the border modes

Parameters

Returns

Definition at line 336 of file qwt_interval.cpp.

double QwtInterval::maxValue () const [inline]

Returns

Definition at line 198 of file qwt_interval.h.

double QwtInterval::minValue () const [inline]

Returns

Definition at line 192 of file qwt_interval.h.

QwtInterval QwtInterval::normalized () const

Normalize the limits of the interval. If maxValue() < minValue() the limits will be inverted.

Returns

See also

Definition at line 29 of file qwt_interval.cpp.

bool QwtInterval::operator!= (const QwtInterval & other) const [inline]

Compare two intervals.

Parameters

Returns

Definition at line 296 of file qwt_interval.h.

QwtInterval QwtInterval::operator& (const QwtInterval & other) const [inline]

Intersection of two intervals.

Parameters

Returns

See also

Definition at line 258 of file qwt_interval.h.

QwtInterval & QwtInterval::operator&= (const QwtInterval & other)

Intersect this interval with the given interval.

Parameters

Returns

Definition at line 265 of file qwt_interval.cpp.

bool QwtInterval::operator== (const QwtInterval & other) const [inline]

Compare two intervals.

Parameters

Returns

Definition at line 284 of file qwt_interval.h.

QwtInterval QwtInterval::operator| (const QwtInterval & other) const [inline]

Union of two intervals

Parameters

Returns

See also

Definition at line 272 of file qwt_interval.h.

QwtInterval QwtInterval::operator| (double value) const [inline]

Extend an interval

Parameters

Returns

See also

Definition at line 308 of file qwt_interval.h.

QwtInterval & QwtInterval::operator|= (const QwtInterval & other)

Unite this interval with the given interval.

Parameters

Returns

Definition at line 253 of file qwt_interval.cpp.

QwtInterval & QwtInterval::operator|= (double value)

Extend an interval

Parameters

Returns

See also

Definition at line 380 of file qwt_interval.cpp.

void QwtInterval::setBorderFlags (BorderFlags borderFlags) [inline]

Change the border flags

Parameters

See also

Definition at line 157 of file qwt_interval.h.

void QwtInterval::setInterval (double minValue, double maxValue, BorderFlags borderFlags = IncludeBorders) [inline]

Assign the limits of the interval

Parameters

Definition at line 143 of file qwt_interval.h.

void QwtInterval::setMaxValue (double maxValue) [inline]

Assign the upper limit of the interval

Parameters

Definition at line 186 of file qwt_interval.h.

void QwtInterval::setMinValue (double minValue) [inline]

Assign the lower limit of the interval

Parameters

Definition at line 176 of file qwt_interval.h.

QwtInterval QwtInterval::symmetrize (double value) const

Adjust the limit that is closer to value, so that value becomes the center of the interval.

Parameters

Returns

Definition at line 317 of file qwt_interval.cpp.

double QwtInterval::width () const [inline]

Return the width of an interval. The width of invalid intervals is 0.0, otherwise the result is maxValue() - minValue().

Returns

See also

Definition at line 227 of file qwt_interval.h.

long double QwtInterval::widthL () const [inline]

Return the width of an interval as long double. The width of invalid intervals is 0.0, otherwise the result is maxValue() - minValue().

Returns

See also

Definition at line 241 of file qwt_interval.h.