qgraphicsanchorlayout_p.cpp File Reference

(c0e526f70f58c9b70fea1b9426d14b18f1f0066c)

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

Include dependency graph for qgraphicsanchorlayout_p.cpp:

Go to the source code of this file.

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

Functions
static void	applySizePolicy (QSizePolicy::Policy policy, qreal minSizeHint, qreal prefSizeHint, qreal maxSizeHint, qreal *minSize, qreal *prefSize, qreal *maxSize)
static std::pair< QGraphicsAnchorLayoutPrivate::Interval, qreal >	getFactor (qreal value, qreal min, qreal minPref, qreal pref, qreal maxPref, qreal max)
static qreal	interpolate (const std::pair< 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 auto	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 [1/2]

enum slackType

Enumerator
Grower
Shrinker
Grower
Shrinker

Definition at line 2764 of file qgraphicsanchorlayout_p.cpp.

slackType [2/2]

enum slackType

Enumerator
Grower
Shrinker
Grower
Shrinker

Definition at line 2764 of file qgraphicsanchorlayout_p.cpp.

Function Documentation

applySizePolicy()

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

static

Definition at line 96 of file qgraphicsanchorlayout_p.cpp.

createSequence()

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 696 of file qgraphicsanchorlayout_p.cpp.

References QtGraphicsAnchorLayout::SequentialAnchorData::calculateSizeHints(), QtGraphicsAnchorLayout::AnchorData::from, and QtGraphicsAnchorLayout::AnchorData::to.

Here is the call graph for this function:

createSlack()

auto createSlack ( QSimplexConstraint * sizeConstraint, qreal interval, slackType type )

static

Definition at line 2765 of file qgraphicsanchorlayout_p.cpp.

getFactor()

std::pair< 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 382 of file qgraphicsanchorlayout_p.cpp.

getVariables()

QList< AnchorData * > getVariables

(

const QList< QSimplexConstraint * > &

constraints

)

Definition at line 2009 of file qgraphicsanchorlayout_p.cpp.

interpolate()

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

static

Definition at line 418 of file qgraphicsanchorlayout_p.cpp.

replaceVertex_helper()

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

static

Definition at line 819 of file qgraphicsanchorlayout_p.cpp.

References QtGraphicsAnchorLayout::AnchorData::from, and QtGraphicsAnchorLayout::AnchorData::to.

shiftConstraints()

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 2125 of file qgraphicsanchorlayout_p.cpp.

Variable Documentation

g_offset

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

Definition at line 27 of file qgraphicsanchorlayout_p.cpp.