#include "qgraphicsanchorlayout_p.h"
#include <QtWidgets/qwidget.h>
#include <QtWidgets/qapplication.h>
#include <QtCore/qstack.h>
#include <numeric>

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Enumerations
enum	slackType { Grower = -1 , Shrinker = 1 }

Functions
static void	applySizePolicy (QSizePolicy::Policy policy, qreal minSizeHint, qreal prefSizeHint, qreal maxSizeHint, qreal minSize, qreal prefSize, qreal *maxSize)

static QPair< QGraphicsAnchorLayoutPrivate::Interval, qreal >	getFactor (qreal value, qreal min, qreal minPref, qreal pref, qreal maxPref, qreal max)

static qreal	interpolate (const QPair< QGraphicsAnchorLayoutPrivate::Interval, qreal > &factor, qreal min, qreal minPref, qreal pref, qreal maxPref, qreal max)

static AnchorData *	createSequence (Graph< AnchorVertex, AnchorData > graph, AnchorVertex before, const QList< AnchorVertex * > &vertices, AnchorVertex *after)

static AnchorVertex *	replaceVertex_helper (AnchorData data, AnchorVertex oldV, AnchorVertex *newV)

QList< AnchorData * >	getVariables (const QList< QSimplexConstraint * > &constraints)

static void	shiftConstraints (const QList< QSimplexConstraint * > &constraints, qreal amount)

static QPair< QSimplexVariable , QSimplexConstraint >	createSlack (QSimplexConstraint *sizeConstraint, qreal interval, slackType type)

Variables
const qreal	g_offset = (sizeof(qreal) == sizeof(double)) ? QWIDGETSIZE_MAX : QWIDGETSIZE_MAX / 32

Enumeration Type Documentation

◆ slackType

enum slackType

Enumerator
Grower
Shrinker

Definition at line 2771 of file qgraphicsanchorlayout_p.cpp.

Function Documentation

◆ applySizePolicy()

static void applySizePolicy	(	QSizePolicy::Policy	policy,
		qreal	minSizeHint,
		qreal	prefSizeHint,
		qreal	maxSizeHint,
		qreal *	minSize,
		qreal *	prefSize,
		qreal *	maxSize
	)

static

Definition at line 95 of file qgraphicsanchorlayout_p.cpp.

References QSizePolicy::GrowFlag, QSizePolicy::IgnoreFlag, policy, and QSizePolicy::ShrinkFlag.

Referenced by QtGraphicsAnchorLayout::AnchorData::refreshSizeHints().

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◆ createSequence()

static AnchorData * createSequence	(	Graph< AnchorVertex, AnchorData > *	graph,
		AnchorVertex *	before,
		const QList< AnchorVertex * > &	vertices,
		AnchorVertex *	after
	)

static

Takes the sequence of vertices described by (before, vertices, after) and removes all anchors connected to the vertices in vertices, returning one simplified anchor between before and after.

Note that this function doesn't add the created anchor to the graph. This should be done by the caller.

Definition at line 701 of file qgraphicsanchorlayout_p.cpp.

References QList< T >::append(), QString::arg(), QList< T >::at(), QtGraphicsAnchorLayout::SequentialAnchorData::calculateSizeHints(), QList< T >::count(), QtGraphicsAnchorLayout::AnchorData::from, QString::fromLatin1(), i, QList< T >::last(), next, Q_ASSERT, qDebug, qPrintable, QList< T >::reserve(), QList< T >::size(), Graph< Vertex, EdgeData >::takeEdge(), and QtGraphicsAnchorLayout::AnchorData::to.

Referenced by QV4::ExecutionEngine::fromData(), and QGraphicsAnchorLayoutPrivate::simplifyGraphIteration().

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◆ createSlack()

static QPair< QSimplexVariable , QSimplexConstraint > createSlack	(	QSimplexConstraint *	sizeConstraint,
		qreal	interval,
		slackType	type
	)

static

Definition at line 2772 of file qgraphicsanchorlayout_p.cpp.

References QHash< Key, T >::insert(), QSimplexConstraint::LessOrEqual, qMakePair(), and QSimplexConstraint::variables.

Referenced by QGraphicsAnchorLayoutPrivate::solvePreferred().

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◆ getFactor()

static QPair< QGraphicsAnchorLayoutPrivate::Interval, qreal > getFactor	(	qreal	value,
		qreal	min,
		qreal	minPref,
		qreal	pref,
		qreal	maxPref,
		qreal	max
	)

static

returns the factor in the interval [-1, 1]. -1 is at Minimum 0 is at Preferred 1 is at Maximum

Definition at line 381 of file qgraphicsanchorlayout_p.cpp.

References QGraphicsAnchorLayoutPrivate::MaxPreferredToMaximum, QGraphicsAnchorLayoutPrivate::MinimumToMinPreferred, QGraphicsAnchorLayoutPrivate::MinPreferredToPreferred, QGraphicsAnchorLayoutPrivate::PreferredToMaxPreferred, and qMakePair().

Referenced by QGraphicsAnchorLayoutPrivate::setupEdgesInterpolation(), and QtGraphicsAnchorLayout::SequentialAnchorData::updateChildrenSizes().

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◆ getVariables()

QList< AnchorData * > getVariables ( const QList< QSimplexConstraint * > & constraints )

Definition at line 2016 of file qgraphicsanchorlayout_p.cpp.

References QList< T >::at(), QSet< T >::cbegin(), i, QSet< T >::insert(), it, QList< T >::size(), and QSet< T >::values().

Referenced by QGraphicsAnchorLayoutPrivate::calculateGraphs(), and QGraphicsAnchorLayoutPrivate::solveMinMax().

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◆ interpolate()

static qreal interpolate	(	const QPair< QGraphicsAnchorLayoutPrivate::Interval, qreal > &	factor,
		qreal	min,
		qreal	minPref,
		qreal	pref,
		qreal	maxPref,
		qreal	max
	)

static

Definition at line 417 of file qgraphicsanchorlayout_p.cpp.

References QGraphicsAnchorLayoutPrivate::MaxPreferredToMaximum, QGraphicsAnchorLayoutPrivate::MinimumToMinPreferred, QGraphicsAnchorLayoutPrivate::MinPreferredToPreferred, and QGraphicsAnchorLayoutPrivate::PreferredToMaxPreferred.

Referenced by QGraphicsAnchorLayoutPrivate::interpolateEdge(), and QtGraphicsAnchorLayout::SequentialAnchorData::updateChildrenSizes().

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◆ replaceVertex_helper()

static AnchorVertex * replaceVertex_helper	(	AnchorData *	data,
		AnchorVertex *	oldV,
		AnchorVertex *	newV
	)

static

Definition at line 824 of file qgraphicsanchorlayout_p.cpp.

References other().

Referenced by QGraphicsAnchorLayoutPrivate::replaceVertex(), and QGraphicsAnchorLayoutPrivate::restoreVertices().

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◆ shiftConstraints()

static void shiftConstraints	(	const QList< QSimplexConstraint * > &	constraints,
		qreal	amount
	)

static

Shift all the constraints by a certain amount. This allows us to deal with negative values in the linear program if they are bounded by a certain limit. Functions should be careful to call it again with a negative amount, to shift the constraints back.

Definition at line 2132 of file qgraphicsanchorlayout_p.cpp.

References QList< T >::at(), i, and QList< T >::size().

Referenced by QGraphicsAnchorLayoutPrivate::calculateNonTrunk(), and QGraphicsAnchorLayoutPrivate::calculateTrunk().

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