(512d35198b726413c151533c8291c6b4b52f0a1d)

#include "qregion.h"
#include "qpainterpath.h"
#include "qpolygon.h"
#include "qbuffer.h"
#include "qdatastream.h"
#include "qvariant.h"
#include "qvarlengtharray.h"
#include "qimage.h"
#include "qbitmap.h"
#include "qtransform.h"
#include <memory>
#include <private/qdebug_p.h>
#include <limits.h>

Include dependency graph for qregion.cpp:

Go to the source code of this file.

Classes
struct	QRegionPrivate
struct	_POINTBLOCK
struct	BRESINFO
struct	_EdgeTableEntry
struct	_ScanLineList
struct	EdgeTable
struct	_ScanLineListBlock
struct	QRegionSpan

Macros
#define	QRGN_SETRECT 1
#define	QRGN_SETELLIPSE 2
#define	QRGN_SETPTARRAY_ALT 3
#define	QRGN_SETPTARRAY_WIND 4
#define	QRGN_TRANSLATE 5
#define	QRGN_OR 6
#define	QRGN_AND 7
#define	QRGN_SUB 8
#define	QRGN_XOR 9
#define	QRGN_RECTS 10
#define	RectangleOut 0
#define	RectangleIn 1
#define	RectanglePart 2
#define	EvenOddRule 0
#define	WindingRule 1
#define	_XREGION_H
#define	EXTENTCHECK(r1, r2)
#define	EXTENTS(r, idRect)
#define	MEMCHECK(dest, rect, firstrect)
#define	NUMPTSTOBUFFER 200
#define	MERGERECT(r)
#define	BRESINITPGON(dy, x1, x2, xStart, d, m, m1, incr1, incr2)
#define	BRESINCRPGON(d, minval, m, m1, incr1, incr2)
#define	BRESINITPGONSTRUCT(dmaj, min1, min2, bres)
#define	BRESINCRPGONSTRUCT(bres)
#define	CLOCKWISE 1
#define	COUNTERCLOCKWISE -1
#define	SLLSPERBLOCK 25
#define	EVALUATEEDGEWINDING(pAET, pPrevAET, y, fixWAET)
#define	EVALUATEEDGEEVENODD(pAET, pPrevAET, y)
#define	LARGE_COORDINATE INT_MAX
#define	SMALL_COORDINATE INT_MIN
#define	AddSpan

Typedefs
typedef void(*	OverlapFunc) (QRegionPrivate &dest, const QRect r1, const QRect r1End, const QRect r2, const QRect r2End, int y1, int y2)
typedef void(*	NonOverlapFunc) (QRegionPrivate &dest, const QRect r, const QRect rEnd, int y1, int y2)
typedef struct _POINTBLOCK	POINTBLOCK
typedef struct _EdgeTableEntry	EdgeTableEntry
typedef struct _ScanLineList	ScanLineList
typedef struct _ScanLineListBlock	ScanLineListBlock

Functions
QDebug	operator<< (QDebug s, const QRegion &r)
bool	rect_intersects (const QRect &r1, const QRect &r2)
	Q_DECLARE_TYPEINFO (Segment, Q_PRIMITIVE_TYPE)
Q_GUI_EXPORT QPainterPath	qt_regionToPath (const QRegion &region)
static bool	isEmptyHelper (const QRegionPrivate *preg)
static bool	canMergeFromRight (const QRect left, const QRect right)
static bool	canMergeFromLeft (const QRect right, const QRect left)
static bool	canMergeFromBelow (const QRect top, const QRect bottom, const QRect nextToTop, const QRect nextToBottom)
static QRect	qt_rect_intersect_normalized (const QRect &r1, const QRect &r2)
static bool	EqualRegion (const QRegionPrivate r1, const QRegionPrivate r2)
static void	UnionRegion (const QRegionPrivate reg1, const QRegionPrivate reg2, QRegionPrivate &dest)
static void	miRegionOp (QRegionPrivate &dest, const QRegionPrivate reg1, const QRegionPrivate reg2, OverlapFunc overlapFunc, NonOverlapFunc nonOverlap1Func, NonOverlapFunc nonOverlap2Func)
static void	UnionRectWithRegion (const QRect rect, const QRegionPrivate source, QRegionPrivate &dest)
static void	miSetExtents (QRegionPrivate &dest)
static void	OffsetRegion (QRegionPrivate &region, int x, int y)
static void	miIntersectO (QRegionPrivate &dest, const QRect r1, const QRect r1End, const QRect r2, const QRect r2End, int y1, int y2)
static int	miCoalesce (QRegionPrivate &dest, int prevStart, int curStart)
static void	miUnionNonO (QRegionPrivate &dest, const QRect r, const QRect rEnd, int y1, int y2)
static void	miUnionO (QRegionPrivate &dest, const QRect r1, const QRect r1End, const QRect r2, const QRect r2End, int y1, int y2)
static void	miSubtractNonO1 (QRegionPrivate &dest, const QRect r, const QRect rEnd, int y1, int y2)
static void	miSubtractO (QRegionPrivate &dest, const QRect r1, const QRect r1End, const QRect r2, const QRect r2End, int y1, int y2)
static void	SubtractRegion (QRegionPrivate regM, QRegionPrivate regS, QRegionPrivate &dest)
static void	XorRegion (QRegionPrivate sra, QRegionPrivate srb, QRegionPrivate &dest)
static bool	PointInRegion (QRegionPrivate *pRegion, int x, int y)
static bool	RectInRegion (QRegionPrivate *region, int rx, int ry, uint rwidth, uint rheight)
static void	InsertEdgeInET (EdgeTable ET, EdgeTableEntry ETE, int scanline, ScanLineListBlock *SLLBlock, int iSLLBlock)
static void	CreateETandAET (int count, const QPoint pts, EdgeTable ET, EdgeTableEntry AET, EdgeTableEntry pETEs, ScanLineListBlock *pSLLBlock)
static void	loadAET (EdgeTableEntry AET, EdgeTableEntry ETEs)
static void	computeWAET (EdgeTableEntry *AET)
static int	InsertionSort (EdgeTableEntry *AET)
static void	FreeStorage (ScanLineListBlock *pSLLBlock)
	Q_DECLARE_TYPEINFO (QRegionSpan, Q_PRIMITIVE_TYPE)
static void	flushRow (const QRegionSpan spans, int y, int numSpans, QRegionPrivate reg, int lastRow, int extendTo, bool *needsExtend)
static void	PtsToRegion (int numFullPtBlocks, int iCurPtBlock, POINTBLOCK FirstPtBlock, QRegionPrivate reg)
static QRegionPrivate *	PolygonRegion (const QPoint *Pts, int Count, int rule)
QRegionPrivate *	qt_bitmapToRegion (const QBitmap &bitmap)
Q_GUI_EXPORT bool	qt_region_strictContains (const QRegion &region, const QRect &rect)
static Q_DECL_COLD_FUNCTION void	set_rects_warn (const char *what)

Variables
static Q_CONSTINIT QRegionPrivate	qrp

Macro Definition Documentation

◆ _XREGION_H

#define _XREGION_H

Definition at line 1659 of file qregion.cpp.

◆ AddSpan

#define AddSpan

Value:

{ \
    xr.setCoords(prev1, y, x-1, y); \
    UnionRectWithRegion(&xr, region, *region); \
}

◆ BRESINCRPGON

#define BRESINCRPGON	(	d,
		minval,
		m,
		m1,
		incr1,
		incr2 )

Value:

    { \
    if (m1 > 0) { \
        if (d > 0) { \
            minval += m1; \
            d += incr1; \
        } \
        else { \
            minval += m; \
            d += incr2; \
        } \
    } else {\
        if (d >= 0) { \
            minval += m1; \
            d += incr1; \
        } \
        else { \
            minval += m; \
            d += incr2; \
        } \
    } \
}

Definition at line 2851 of file qregion.cpp.

◆ BRESINCRPGONSTRUCT

#define BRESINCRPGONSTRUCT ( bres )

Value:

BRESINCRPGON(bres.d, bres.minor_axis, bres.m, bres.m1, bres.incr1, bres.incr2)

BRESINCRPGON

#define BRESINCRPGON(d, minval, m, m1, incr1, incr2)

Definition qregion.cpp:2851

Definition at line 2893 of file qregion.cpp.

◆ BRESINITPGON

#define BRESINITPGON	(	dy,
		x1,
		x2,
		xStart,
		d,
		m,
		m1,
		incr1,
		incr2 )

Value:

    { \
    int dx;      /* local storage */ \
\
    /* \
     *  if the edge is horizontal, then it is ignored \
     *  and assumed not to be processed.  Otherwise, do this stuff. \
     */ \
    if ((dy) != 0) { \
        xStart = (x1); \
        dx = (x2) - xStart; \
        if (dx < 0) { \
            m = dx / (dy); \
            m1 = m - 1; \
            incr1 = -2 * dx + 2 * (dy) * m1; \
            incr2 = -2 * dx + 2 * (dy) * m; \
            d = 2 * m * (dy) - 2 * dx - 2 * (dy); \
        } else { \
            m = dx / (dy); \
            m1 = m + 1; \
            incr1 = 2 * dx - 2 * (dy) * m1; \
            incr2 = 2 * dx - 2 * (dy) * m; \
            d = -2 * m * (dy) + 2 * dx; \
        } \
    } \
}

Definition at line 2828 of file qregion.cpp.

◆ BRESINITPGONSTRUCT

#define BRESINITPGONSTRUCT	(	dmaj,
		min1,
		min2,
		bres )

Value:

BRESINITPGON(dmaj, min1, min2, bres.minor_axis, bres.d, \

bres.m, bres.m1, bres.incr1, bres.incr2)

BRESINITPGON

#define BRESINITPGON(dy, x1, x2, xStart, d, m, m1, incr1, incr2)

Definition qregion.cpp:2828

Definition at line 2889 of file qregion.cpp.

◆ CLOCKWISE

#define CLOCKWISE 1

Definition at line 2947 of file qregion.cpp.

◆ COUNTERCLOCKWISE

#define COUNTERCLOCKWISE -1

Definition at line 2948 of file qregion.cpp.

◆ EVALUATEEDGEEVENODD

#define EVALUATEEDGEEVENODD	(	pAET,
		pPrevAET,
		y )

Value:

   { \
   if (pAET->ymax == y) {          /* leaving this edge */ \
      pPrevAET->next = pAET->next; \
      pAET = pPrevAET->next; \
      if (pAET) \
         pAET->back = pPrevAET; \
   } \
   else { \
      BRESINCRPGONSTRUCT(pAET->bres) \
      pPrevAET = pAET; \
      pAET = pAET->next; \
   } \
}

Definition at line 3024 of file qregion.cpp.

◆ EVALUATEEDGEWINDING

#define EVALUATEEDGEWINDING	(	pAET,
		pPrevAET,
		y,
		fixWAET )

Value:

   { \
   if (pAET->ymax == y) {          /* leaving this edge */ \
      pPrevAET->next = pAET->next; \
      pAET = pPrevAET->next; \
      fixWAET = 1; \
      if (pAET) \
         pAET->back = pPrevAET; \
   } \
   else { \
      BRESINCRPGONSTRUCT(pAET->bres) \
      pPrevAET = pAET; \
      pAET = pAET->next; \
   } \
}

Definition at line 3001 of file qregion.cpp.

◆ EvenOddRule

#define EvenOddRule 0

Definition at line 1605 of file qregion.cpp.

◆ EXTENTCHECK

#define EXTENTCHECK	(		r1,
			r2 )

Value:

((r1)->right() >= (r2)->left() && \
 (r1)->left() <= (r2)->right() && \
 (r1)->bottom() >= (r2)->top() && \
 (r1)->top() <= (r2)->bottom())

Definition at line 1669 of file qregion.cpp.

◆ EXTENTS

#define EXTENTS	(		r,
			idRect )

Value:

    {\
    if((r)->left() < (idRect)->extents.left())\
      (idRect)->extents.setLeft((r)->left());\
    if((r)->top() < (idRect)->extents.top())\
      (idRect)->extents.setTop((r)->top());\
    if((r)->right() > (idRect)->extents.right())\
      (idRect)->extents.setRight((r)->right());\
    if((r)->bottom() > (idRect)->extents.bottom())\
      (idRect)->extents.setBottom((r)->bottom());\
}

Definition at line 1678 of file qregion.cpp.

◆ LARGE_COORDINATE

#define LARGE_COORDINATE INT_MAX

Definition at line 3089 of file qregion.cpp.

◆ MEMCHECK

#define MEMCHECK	(	dest,
		rect,
		firstrect )

Value:

  {\
  if ((dest).numRects >= ((dest).rects.size()-1)){\
    firstrect.resize(firstrect.size() * 2); \
    (rect) = (firstrect).data() + (dest).numRects;\
  }\
}

Definition at line 1692 of file qregion.cpp.

◆ MERGERECT

#define MERGERECT ( r )

Value:

if ((dest.numRects != 0) &&  \
    (pNextRect[-1].top() == y1) &&  \
    (pNextRect[-1].bottom() == y2) &&  \
    (pNextRect[-1].right() >= r->left()-1)) { \
    if (pNextRect[-1].right() < r->right()) { \
        pNextRect[-1].setRight(r->right());  \
        dest.updateInnerRect(pNextRect[-1]); \
        Q_ASSERT(pNextRect[-1].left() <= pNextRect[-1].right()); \
    }  \
} else { \
    MEMCHECK(dest, pNextRect, dest.rects)  \
    pNextRect->setCoords(r->left(), y1, r->right(), y2); \
    dest.updateInnerRect(*pNextRect); \
    dest.numRects++;  \
    pNextRect++;  \
}  \
r++;

◆ NUMPTSTOBUFFER

#define NUMPTSTOBUFFER 200

Definition at line 1704 of file qregion.cpp.

◆ QRGN_AND

#define QRGN_AND 7

Definition at line 188 of file qregion.cpp.

◆ QRGN_OR

#define QRGN_OR 6

Definition at line 187 of file qregion.cpp.

◆ QRGN_RECTS

#define QRGN_RECTS 10

Definition at line 191 of file qregion.cpp.

◆ QRGN_SETELLIPSE

#define QRGN_SETELLIPSE 2

Definition at line 183 of file qregion.cpp.

◆ QRGN_SETPTARRAY_ALT

#define QRGN_SETPTARRAY_ALT 3

Definition at line 184 of file qregion.cpp.

◆ QRGN_SETPTARRAY_WIND

#define QRGN_SETPTARRAY_WIND 4

Definition at line 185 of file qregion.cpp.

◆ QRGN_SETRECT

#define QRGN_SETRECT 1

Definition at line 182 of file qregion.cpp.

◆ QRGN_SUB

#define QRGN_SUB 8

Definition at line 189 of file qregion.cpp.

◆ QRGN_TRANSLATE

#define QRGN_TRANSLATE 5

Definition at line 186 of file qregion.cpp.

◆ QRGN_XOR

#define QRGN_XOR 9

Definition at line 190 of file qregion.cpp.

◆ RectangleIn

#define RectangleIn 1

Definition at line 1603 of file qregion.cpp.

◆ RectangleOut

#define RectangleOut 0

Definition at line 1602 of file qregion.cpp.

◆ RectanglePart

#define RectanglePart 2

Definition at line 1604 of file qregion.cpp.

◆ SLLSPERBLOCK

#define SLLSPERBLOCK 25

Definition at line 2979 of file qregion.cpp.

◆ SMALL_COORDINATE

#define SMALL_COORDINATE INT_MIN

Definition at line 3090 of file qregion.cpp.

◆ WindingRule

#define WindingRule 1

Definition at line 1606 of file qregion.cpp.

Typedef Documentation

◆ EdgeTableEntry

typedef struct _EdgeTableEntry EdgeTableEntry

◆ NonOverlapFunc

typedef void(* NonOverlapFunc)(QRegionPrivate &dest, const QRect *r, const QRect *rEnd, int y1, int y2)

Definition at line 1593 of file qregion.cpp.

◆ OverlapFunc

typedef void(* OverlapFunc)(QRegionPrivate &dest, const QRect *r1, const QRect *r1End, const QRect *r2, const QRect *r2End, int y1, int y2)

Definition at line 1591 of file qregion.cpp.

◆ POINTBLOCK

typedef struct _POINTBLOCK POINTBLOCK

◆ ScanLineList

typedef struct _ScanLineList ScanLineList

◆ ScanLineListBlock

typedef struct _ScanLineListBlock ScanLineListBlock

Function Documentation

◆ canMergeFromBelow()

bool canMergeFromBelow	(	const QRect *	top,
		const QRect *	bottom,
		const QRect *	nextToTop,
		const QRect *	nextToBottom )

inlinestatic

Definition at line 1195 of file qregion.cpp.

Referenced by QRegionPrivate::mergeFromAbove(), and QRegionPrivate::mergeFromBelow().

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◆ canMergeFromLeft()

bool canMergeFromLeft	(	const QRect *	right,
		const QRect *	left )

inlinestatic

Definition at line 1170 of file qregion.cpp.

References canMergeFromRight().

Referenced by QRegionPrivate::mergeFromLeft().

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◆ canMergeFromRight()

bool canMergeFromRight	(	const QRect *	left,
		const QRect *	right )

inlinestatic

Definition at line 1163 of file qregion.cpp.

Referenced by canMergeFromLeft(), and QRegionPrivate::mergeFromRight().

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◆ computeWAET()

void computeWAET ( EdgeTableEntry * AET )

static

Definition at line 3312 of file qregion.cpp.

◆ CreateETandAET()

void CreateETandAET	(	int	count,
		const QPoint *	pts,
		EdgeTable *	ET,
		EdgeTableEntry *	AET,
		EdgeTableEntry *	pETEs,
		ScanLineListBlock *	pSLLBlock )

static

Definition at line 3182 of file qregion.cpp.

◆ EqualRegion()

bool EqualRegion	(	const QRegionPrivate *	r1,
		const QRegionPrivate *	r2 )

static

Definition at line 2640 of file qregion.cpp.

References QRegionPrivate::numRects.

Referenced by SubtractRegion(), UnionRectWithRegion(), UnionRegion(), and XorRegion().

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◆ flushRow()

void flushRow	(	const QRegionSpan *	spans,
		int	y,
		int	numSpans,
		QRegionPrivate *	reg,
		int *	lastRow,
		int *	extendTo,
		bool *	needsExtend )

inlinestatic

Definition at line 3401 of file qregion.cpp.

◆ FreeStorage()

void FreeStorage ( ScanLineListBlock * pSLLBlock )

static

Definition at line 3379 of file qregion.cpp.

◆ InsertEdgeInET()

void InsertEdgeInET	(	EdgeTable *	ET,
		EdgeTableEntry *	ETE,
		int	scanline,
		ScanLineListBlock **	SLLBlock,
		int *	iSLLBlock )

static

Definition at line 3101 of file qregion.cpp.

◆ InsertionSort()

int InsertionSort ( EdgeTableEntry * AET )

static

Definition at line 3346 of file qregion.cpp.

◆ isEmptyHelper()

bool isEmptyHelper ( const QRegionPrivate * preg )

inlinestatic

Definition at line 1158 of file qregion.cpp.

References QRegionPrivate::numRects.

Referenced by QRegionPrivate::append(), PointInRegion(), QRegionPrivate::prepend(), SubtractRegion(), UnionRegion(), and XorRegion().

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◆ loadAET()

void loadAET	(	EdgeTableEntry *	AET,
		EdgeTableEntry *	ETEs )

static

Definition at line 3268 of file qregion.cpp.

◆ miCoalesce()

int miCoalesce	(	QRegionPrivate &	dest,
		int	prevStart,
		int	curStart )

static

Definition at line 1973 of file qregion.cpp.

References QRegionPrivate::numRects, and QRegionPrivate::updateInnerRect().

Referenced by miRegionOp().

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◆ miIntersectO()

void miIntersectO	(	QRegionPrivate &	dest,
		const QRect *	r1,
		const QRect *	r1End,
		const QRect *	r2,
		const QRect *	r2End,
		int	y1,
		int	y2 )

static

Definition at line 1908 of file qregion.cpp.

References QRegionPrivate::numRects.

◆ miRegionOp()

void miRegionOp	(	QRegionPrivate &	dest,
		const QRegionPrivate *	reg1,
		const QRegionPrivate *	reg2,
		OverlapFunc	overlapFunc,
		NonOverlapFunc	nonOverlap1Func,
		NonOverlapFunc	nonOverlap2Func )

static

Definition at line 2102 of file qregion.cpp.

References miCoalesce(), QRegionPrivate::numRects, and QRegionPrivate::vectorize().

Referenced by SubtractRegion(), and UnionRegion().

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◆ miSetExtents()

void miSetExtents ( QRegionPrivate & dest )

static

Definition at line 1828 of file qregion.cpp.

References QRegionPrivate::innerArea, QRegionPrivate::numRects, and QRegionPrivate::updateInnerRect().

Referenced by SubtractRegion().

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◆ miSubtractNonO1()

void miSubtractNonO1	(	QRegionPrivate &	dest,
		const QRect *	r,
		const QRect *	rEnd,
		int	y1,
		int	y2 )

static

Definition at line 2450 of file qregion.cpp.

References QRegionPrivate::numRects.

Referenced by SubtractRegion().

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◆ miSubtractO()

void miSubtractO	(	QRegionPrivate &	dest,
		const QRect *	r1,
		const QRect *	r1End,
		const QRect *	r2,
		const QRect *	r2End,
		int	y1,
		int	y2 )

static

Definition at line 2484 of file qregion.cpp.

References QRegionPrivate::numRects.

Referenced by SubtractRegion().

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◆ miUnionNonO()

void miUnionNonO	(	QRegionPrivate &	dest,
		const QRect *	r,
		const QRect *	rEnd,
		int	y1,
		int	y2 )

static

Definition at line 2325 of file qregion.cpp.

References QRegionPrivate::numRects.

Referenced by UnionRegion().

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◆ miUnionO()

void miUnionO	(	QRegionPrivate &	dest,
		const QRect *	r1,
		const QRect *	r1End,
		const QRect *	r2,
		const QRect *	r2End,
		int	y1,
		int	y2 )

static

Definition at line 2361 of file qregion.cpp.

References QRegionPrivate::numRects.

Referenced by UnionRegion().

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◆ OffsetRegion()

void OffsetRegion	(	QRegionPrivate &	region,
		int	x,
		int	y )

static

Definition at line 1877 of file qregion.cpp.

References QRegionPrivate::numRects.

◆ operator<<()

QDebug operator<<	(	QDebug	s,
		const QRegion &	r )

Definition at line 356 of file qregion.cpp.

◆ PointInRegion()

bool PointInRegion	(	QRegionPrivate *	pRegion,
		int	x,
		int	y )

static

Definition at line 2662 of file qregion.cpp.

References isEmptyHelper(), and QRegionPrivate::numRects.

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◆ PolygonRegion()

QRegionPrivate * PolygonRegion	(	const QPoint *	Pts,
		int	Count,
		int	rule )

static

Definition at line 3515 of file qregion.cpp.

References QRegionPrivate::innerArea, _POINTBLOCK::next, QRegionPrivate::numRects, _POINTBLOCK::pts, and QRegionPrivate::vectorize().

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◆ PtsToRegion()

void PtsToRegion	(	int	numFullPtBlocks,
		int	iCurPtBlock,
		POINTBLOCK *	FirstPtBlock,
		QRegionPrivate *	reg )

static

Definition at line 3445 of file qregion.cpp.

References QRegionPrivate::innerArea, _POINTBLOCK::next, QRegionPrivate::numRects, _POINTBLOCK::pts, and QRegionPrivate::updateInnerRect().

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◆ Q_DECLARE_TYPEINFO() [1/2]

Q_DECLARE_TYPEINFO	(	QRegionSpan	,
		Q_PRIMITIVE_TYPE	)

◆ Q_DECLARE_TYPEINFO() [2/2]

Q_DECLARE_TYPEINFO	(	Segment	,
		Q_PRIMITIVE_TYPE	)

◆ qt_bitmapToRegion()

QRegionPrivate * qt_bitmapToRegion ( const QBitmap & bitmap )

Definition at line 3719 of file qregion.cpp.

◆ qt_rect_intersect_normalized()

QRect qt_rect_intersect_normalized	(	const QRect &	r1,
		const QRect &	r2 )

inlinestatic

Definition at line 1233 of file qregion.cpp.

◆ qt_region_strictContains()

Q_GUI_EXPORT bool qt_region_strictContains	(	const QRegion &	region,
		const QRect &	rect )

Returns true if rect is guaranteed to be fully contained in region. A false return value does not guarantee the opposite.

Definition at line 4171 of file qregion.cpp.

◆ qt_regionToPath()

Q_GUI_EXPORT QPainterPath qt_regionToPath ( const QRegion & region )

Definition at line 1011 of file qregion.cpp.

◆ rect_intersects()

bool rect_intersects	(	const QRect &	r1,
		const QRect &	r2 )

inline

Definition at line 594 of file qregion.cpp.

◆ RectInRegion()

bool RectInRegion	(	QRegionPrivate *	region,
		int	rx,
		int	ry,
		uint	rwidth,
		uint	rheight )

static

Definition at line 2681 of file qregion.cpp.

References QRegionPrivate::numRects.

◆ set_rects_warn()

Q_DECL_COLD_FUNCTION void set_rects_warn ( const char * what )

static

Definition at line 4214 of file qregion.cpp.

◆ SubtractRegion()

void SubtractRegion	(	QRegionPrivate *	regM,
		QRegionPrivate *	regS,
		QRegionPrivate &	dest )

static

Definition at line 2585 of file qregion.cpp.

References QRegionPrivate::contains(), EqualRegion(), isEmptyHelper(), miRegionOp(), miSetExtents(), miSubtractNonO1(), and miSubtractO().

Referenced by XorRegion().

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◆ UnionRectWithRegion()

void UnionRectWithRegion	(	const QRect *	rect,
		const QRegionPrivate *	source,
		QRegionPrivate &	dest )

static

Definition at line 1795 of file qregion.cpp.

References QRegionPrivate::QRegionPrivate(), QRegionPrivate::append(), QRegionPrivate::canAppend(), EqualRegion(), QRegionPrivate::numRects, and UnionRegion().

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◆ UnionRegion()

void UnionRegion	(	const QRegionPrivate *	reg1,
		const QRegionPrivate *	reg2,
		QRegionPrivate &	dest )

static

Definition at line 2407 of file qregion.cpp.

References QRegionPrivate::canAppend(), QRegionPrivate::contains(), EqualRegion(), QRegionPrivate::innerArea, isEmptyHelper(), miRegionOp(), miUnionNonO(), and miUnionO().

Referenced by UnionRectWithRegion(), and XorRegion().

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◆ XorRegion()

void XorRegion	(	QRegionPrivate *	sra,
		QRegionPrivate *	srb,
		QRegionPrivate &	dest )

static

Definition at line 2606 of file qregion.cpp.

References QRegionPrivate::append(), QRegionPrivate::canAppend(), QRegionPrivate::contains(), EqualRegion(), isEmptyHelper(), SubtractRegion(), and UnionRegion().

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Variable Documentation

◆ qrp

Q_CONSTINIT QRegionPrivate qrp

static

Definition at line 1588 of file qregion.cpp.

(512d35198b726413c151533c8291c6b4b52f0a1d)

Classes

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Macro Definition Documentation

◆ _XREGION_H

◆ AddSpan

◆ BRESINCRPGON

◆ BRESINCRPGONSTRUCT

◆ BRESINITPGON

◆ BRESINITPGONSTRUCT

◆ CLOCKWISE

◆ COUNTERCLOCKWISE

◆ EVALUATEEDGEEVENODD

◆ EVALUATEEDGEWINDING

◆ EvenOddRule

◆ EXTENTCHECK

◆ EXTENTS

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◆ MERGERECT

◆ NUMPTSTOBUFFER

◆ QRGN_AND

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Typedef Documentation

◆ EdgeTableEntry

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◆ OverlapFunc

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Function Documentation

◆ canMergeFromBelow()

◆ canMergeFromLeft()

◆ canMergeFromRight()

◆ computeWAET()

◆ CreateETandAET()

◆ EqualRegion()

◆ flushRow()

◆ FreeStorage()

◆ InsertEdgeInET()

◆ InsertionSort()

◆ isEmptyHelper()

◆ loadAET()

◆ miCoalesce()

◆ miIntersectO()

◆ miRegionOp()

◆ miSetExtents()

◆ miSubtractNonO1()

◆ miSubtractO()

◆ miUnionNonO()

◆ miUnionO()

◆ OffsetRegion()

◆ operator<<()

◆ PointInRegion()

◆ PolygonRegion()

◆ PtsToRegion()

◆ Q_DECLARE_TYPEINFO() [1/2]

◆ Q_DECLARE_TYPEINFO() [2/2]

◆ qt_bitmapToRegion()

◆ qt_rect_intersect_normalized()

◆ qt_region_strictContains()

◆ qt_regionToPath()

◆ rect_intersects()