qpainterpath.cpp File Reference

(2925683268ca9d8dc6811f8f64c50ca488b27acc)

#include "qpainterpath.h"
#include "qpainterpath_p.h"
#include <qbitmap.h>
#include <qdebug.h>
#include <qiodevice.h>
#include <qlist.h>
#include <qpen.h>
#include <qpolygon.h>
#include <qtextlayout.h>
#include <qvarlengtharray.h>
#include <qmath.h>
#include <private/qbezier_p.h>
#include <private/qfontengine_p.h>
#include <private/qnumeric_p.h>
#include <private/qobject_p.h>
#include <private/qpathclipper_p.h>
#include <private/qstroker_p.h>
#include <private/qtextengine_p.h>
#include <limits.h>

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Macros
#define	PM_INIT
#define	PM_MEASURE(x)
#define	PM_DISPLAY
#define	QT_BEZIER_A(bezier, coord)
#define	QT_BEZIER_B(bezier, coord)
#define	QT_BEZIER_C(bezier, coord)
#define	QT_BEZIER_CHECK_T(bezier, t)

Enumerations
enum	PainterDirections { Left , Right , Top , Bottom }

Functions
static QT_BEGIN_NAMESPACE bool	isValidCoord (qreal c)
static bool	hasValidCoords (QPointF p)
static bool	hasValidCoords (QRectF r)
QPainterPath	qt_stroke_dash (const QPainterPath &path, qreal *dashes, int dashCount)
void	qt_find_ellipse_coords (const QRectF &r, qreal angle, qreal length, QPointF *startPoint, QPointF *endPoint)
static QRectF	qt_painterpath_bezier_extrema (const QBezier &b)
static void	qt_painterpath_isect_line (const QPointF &p1, const QPointF &p2, const QPointF &pos, int *winding)
static void	qt_painterpath_isect_curve (const QBezier &bezier, const QPointF &pt, int *winding, int depth=0)
static bool	qt_painterpath_isect_line_rect (qreal x1, qreal y1, qreal x2, qreal y2, const QRectF &rect)
static bool	qt_isect_curve_horizontal (const QBezier &bezier, qreal y, qreal x1, qreal x2, int depth=0)
static bool	qt_isect_curve_vertical (const QBezier &bezier, qreal x, qreal y1, qreal y2, int depth=0)
static bool	pointOnEdge (const QRectF &rect, const QPointF &point)
static bool	qt_painterpath_check_crossing (const QPainterPath *path, const QRectF &rect)
static bool	epsilonCompare (const QPointF &a, const QPointF &b, const QSizeF &epsilon)
QDataStream &	operator<< (QDataStream &s, const QPainterPath &p)
QDataStream &	operator>> (QDataStream &s, QPainterPath &p)
void	qt_path_stroke_move_to (qfixed x, qfixed y, void *data)
void	qt_path_stroke_line_to (qfixed x, qfixed y, void *data)
void	qt_path_stroke_cubic_to (qfixed c1x, qfixed c1y, qfixed c2x, qfixed c2y, qfixed ex, qfixed ey, void *data)
static qreal	slopeAt (qreal t, qreal a, qreal b, qreal c, qreal d)
static QBezier	bezierAtT (const QPainterPath &path, qreal t, qreal *startingLength, qreal *bezierLength)
QDebug	operator<< (QDebug s, const QPainterPath &p)

Macro Definition Documentation

PM_DISPLAY

#define PM_DISPLAY

Definition at line 32 of file qpainterpath.cpp.

PM_INIT

#define PM_INIT

Definition at line 30 of file qpainterpath.cpp.

PM_MEASURE

#define PM_MEASURE

(

x

)

Definition at line 31 of file qpainterpath.cpp.

QT_BEZIER_A

#define QT_BEZIER_A	(		bezier,
			coord )

Value:

                                        3 * (-bezier.coord##1 \
                                        + 3*bezier.coord##2 \
                                        - 3*bezier.coord##3 \
                                        +bezier.coord##4)

Definition at line 1339 of file qpainterpath.cpp.

Referenced by qt_painterpath_bezier_extrema().

QT_BEZIER_B

#define QT_BEZIER_B	(		bezier,
			coord )

Value:

                                        6 * (bezier.coord##1 \
                                        - 2*bezier.coord##2 \
                                        + bezier.coord##3)

Definition at line 1344 of file qpainterpath.cpp.

Referenced by qt_painterpath_bezier_extrema().

QT_BEZIER_C

#define QT_BEZIER_C	(		bezier,
			coord )

Value:

                                        3 * (- bezier.coord##1 \
                                        + bezier.coord##2)

Definition at line 1348 of file qpainterpath.cpp.

Referenced by qt_painterpath_bezier_extrema().

QT_BEZIER_CHECK_T

#define QT_BEZIER_CHECK_T	(		bezier,
			t )

Value:

    if (t >= 0 && t <= 1) { \
        QPointF p(b.pointAt(t)); \
        if (p.x() < minx) minx = p.x(); \
        else if (p.x() > maxx) maxx = p.x(); \
        if (p.y() < miny) miny = p.y(); \
        else if (p.y() > maxy) maxy = p.y(); \
    }

Definition at line 1351 of file qpainterpath.cpp.

Referenced by qt_painterpath_bezier_extrema().

Enumeration Type Documentation

PainterDirections

enum PainterDirections

Enumerator
Left
Right
Top
Bottom

Definition at line 1847 of file qpainterpath.cpp.

Function Documentation

bezierAtT()

static QBezier bezierAtT ( const QPainterPath & path, qreal t, qreal * startingLength, qreal * bezierLength )

inlinestatic

Definition at line 2933 of file qpainterpath.cpp.

References QPainterPath::CurveToElement, QBezier::fromPoints(), i, QString::length(), line, QPainterPath::LineToElement, QPainterPath::MoveToElement, and QPainterPath::Element::type.

Referenced by QPainterPath::angleAtPercent(), QPainterPath::pointAtPercent(), and QPainterPath::slopeAtPercent().

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epsilonCompare()

static bool epsilonCompare ( const QPointF & a, const QPointF & b, const QSizeF & epsilon )

inlinestatic

Definition at line 2242 of file qpainterpath.cpp.

References epsilon, and qAbs().

Referenced by QPainterPath::operator==().

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hasValidCoords() [1/2]

static bool hasValidCoords ( QPointF p )

static

Definition at line 45 of file qpainterpath.cpp.

References isValidCoord().

Referenced by QPainterPath::addEllipse(), QPainterPath::addRect(), QPainterPath::arcTo(), QPainterPath::cubicTo(), QPainterPath::lineTo(), QPainterPath::moveTo(), and QPainterPath::quadTo().

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hasValidCoords() [2/2]

static bool hasValidCoords ( QRectF r )

static

Definition at line 50 of file qpainterpath.cpp.

References isValidCoord().

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isValidCoord()

static QT_BEGIN_NAMESPACE bool isValidCoord ( qreal c )

inlinestatic

Definition at line 37 of file qpainterpath.cpp.

References qIsFinite().

Referenced by QPainterPath::arcTo(), hasValidCoords(), and hasValidCoords().

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operator<<() [1/2]

QDataStream & operator<< ( QDataStream & s, const QPainterPath & p )

related

Definition at line 2412 of file qpainterpath.cpp.

operator<<() [2/2]

QDebug operator<<	(	QDebug	s,
		const QPainterPath &	p )

Definition at line 3365 of file qpainterpath.cpp.

References Qt::endl(), and i.

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operator>>()

QDataStream & operator>> ( QDataStream & s, QPainterPath & p )

related

Definition at line 2439 of file qpainterpath.cpp.

pointOnEdge()

static bool pointOnEdge ( const QRectF & rect, const QPointF & point )

static

Definition at line 1964 of file qpainterpath.cpp.

References rect, QPointF::x(), and QPointF::y().

Referenced by qt_painterpath_check_crossing().

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qt_find_ellipse_coords()

void qt_find_ellipse_coords	(	const QRectF &	r,
		qreal	angle,
		qreal	length,
		QPointF *	startPoint,
		QPointF *	endPoint )

Definition at line 65 of file qpainterpath.cpp.

References QBezier::coefficients(), d, i, qFloor(), QT_PATH_KAPPA, and qt_t_for_arc_angle().

Referenced by QPainterPath::arcMoveTo(), and qt_curves_for_arc().

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qt_isect_curve_horizontal()

static bool qt_isect_curve_horizontal ( const QBezier & bezier, qreal y, qreal x1, qreal x2, int depth = 0 )

static

Definition at line 1928 of file qpainterpath.cpp.

References QRectF::bottom(), QBezier::bounds(), QRectF::height(), QRectF::left(), qt_isect_curve_horizontal(), QRectF::right(), QBezier::split(), QRectF::top(), and QRectF::width().

Referenced by qt_isect_curve_horizontal(), and qt_painterpath_check_crossing().

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qt_isect_curve_vertical()

static bool qt_isect_curve_vertical ( const QBezier & bezier, qreal x, qreal y1, qreal y2, int depth = 0 )

static

Definition at line 1946 of file qpainterpath.cpp.

References QRectF::bottom(), QBezier::bounds(), QRectF::height(), QRectF::left(), qt_isect_curve_vertical(), QRectF::right(), QBezier::split(), QRectF::top(), and QRectF::width().

Referenced by qt_isect_curve_vertical(), and qt_painterpath_check_crossing().

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qt_painterpath_bezier_extrema()

static QRectF qt_painterpath_bezier_extrema ( const QBezier & b )

static

Definition at line 1361 of file qpainterpath.cpp.

References qFuzzyIsNull(), qSqrt(), QT_BEZIER_A, QT_BEZIER_B, QT_BEZIER_C, QT_BEZIER_CHECK_T, and t2.

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qt_painterpath_check_crossing()

static bool qt_painterpath_check_crossing ( const QPainterPath * path, const QRectF & rect )

static

Definition at line 1978 of file qpainterpath.cpp.

References QPainterPath::CurveToElement, QBezier::fromPoints(), i, QPainterPath::LineToElement, QPainterPath::MoveToElement, pointOnEdge(), qFuzzyCompare(), qt_isect_curve_horizontal(), qt_isect_curve_vertical(), qt_painterpath_isect_line_rect(), rect, QPainterPath::Element::type, QPainterPath::Element::x, and QPainterPath::Element::y.

Referenced by QPainterPath::contains(), and QPainterPath::intersects().

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qt_painterpath_isect_curve()

static void qt_painterpath_isect_curve ( const QBezier & bezier, const QPointF & pt, int * winding, int depth = 0 )

static

Definition at line 1754 of file qpainterpath.cpp.

References QBezier::bounds(), QRectF::height(), QBezier::pt1(), QBezier::pt4(), qt_painterpath_isect_curve(), QBezier::split(), QRectF::width(), QPointF::x(), QPointF::y(), and QRectF::y().

Referenced by QPainterPath::contains(), and qt_painterpath_isect_curve().

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qt_painterpath_isect_line()

static void qt_painterpath_isect_line ( const QPointF & p1, const QPointF & p2, const QPointF & pos, int * winding )

static

Definition at line 1722 of file qpainterpath.cpp.

References dir, p1, p2, pos, and qFuzzyCompare().

Referenced by QPainterPath::contains().

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qt_painterpath_isect_line_rect()

static bool qt_painterpath_isect_line_rect ( qreal x1, qreal y1, qreal x2, qreal y2, const QRectF & rect )

static

Definition at line 1849 of file qpainterpath.cpp.

References Bottom, Left, p1, p2, rect, Right, and Top.

Referenced by qt_painterpath_check_crossing().

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qt_path_stroke_cubic_to()

void qt_path_stroke_cubic_to	(	qfixed	c1x,
		qfixed	c1y,
		qfixed	c2x,
		qfixed	c2y,
		qfixed	ex,
		qfixed	ey,
		void *	data )

Definition at line 2496 of file qpainterpath.cpp.

References qt_fixed_to_real.

Referenced by QPainterPathStrokerPrivate::QPainterPathStrokerPrivate().

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qt_path_stroke_line_to()

void qt_path_stroke_line_to	(	qfixed	x,
		qfixed	y,
		void *	data )

Definition at line 2491 of file qpainterpath.cpp.

References qt_fixed_to_real.

Referenced by QPainterPathStrokerPrivate::QPainterPathStrokerPrivate().

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qt_path_stroke_move_to()

void qt_path_stroke_move_to	(	qfixed	x,
		qfixed	y,
		void *	data )

Definition at line 2486 of file qpainterpath.cpp.

References qt_fixed_to_real.

Referenced by QPainterPathStrokerPrivate::QPainterPathStrokerPrivate().

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qt_stroke_dash()

QPainterPath qt_stroke_dash	(	const QPainterPath &	path,
		qreal *	dashes,
		int	dashCount )

slopeAt()

static qreal slopeAt ( qreal t, qreal a, qreal b, qreal c, qreal d )

inlinestatic

Definition at line 2828 of file qpainterpath.cpp.

References d.

Referenced by QPainterPath::angleAtPercent(), and QPainterPath::slopeAtPercent().

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