KisWrappableHBoxLayout Class Reference

#include <KisWrappableHBoxLayout.h>

Inheritance diagram for KisWrappableHBoxLayout:

Public Member Functions
void	addItem (QLayoutItem *item) override
int	count () const override
bool	hasHeightForWidth () const override
int	heightForWidth (int width) const override
QLayoutItem *	itemAt (int) const override
	KisWrappableHBoxLayout (QWidget *parent=nullptr)
QSize	minimumSize () const override
void	setGeometry (const QRect &rect) override
QSize	sizeHint () const override
QLayoutItem *	takeAt (int) override
	~KisWrappableHBoxLayout () override

Protected Member Functions
int	doLayout (const QRect &rect, bool testOnly) const

Private Attributes
QVector< QLayoutItem * >	m_items
int	m_lastWidth {-1}

Detailed Description

Definition at line 16 of file KisWrappableHBoxLayout.h.

Constructor & Destructor Documentation

KisWrappableHBoxLayout()

KisWrappableHBoxLayout::KisWrappableHBoxLayout ( QWidget * parent = nullptr )

explicit

Definition at line 12 of file KisWrappableHBoxLayout.cpp.

    : QLayout(parent)
{
    // Remove extra floating space.
    setContentsMargins(0, 0, 0, 0);
}

~KisWrappableHBoxLayout()

KisWrappableHBoxLayout::~KisWrappableHBoxLayout ( )

override

Definition at line 19 of file KisWrappableHBoxLayout.cpp.

{
    QLayoutItem *item;
    while ((item = takeAt(0))) {
        delete item;
    }
}

References takeAt().

Member Function Documentation

addItem()

void KisWrappableHBoxLayout::addItem ( QLayoutItem * item )

override

Definition at line 27 of file KisWrappableHBoxLayout.cpp.

{
    m_items.append(item);
}

References m_items.

count()

int KisWrappableHBoxLayout::count ( ) const

override

Definition at line 64 of file KisWrappableHBoxLayout.cpp.

{
    return m_items.size();
}

References m_items.

doLayout()

int KisWrappableHBoxLayout::doLayout ( const QRect & rect, bool testOnly ) const

protected

Definition at line 98 of file KisWrappableHBoxLayout.cpp.

{
    int left, top, right, bottom;
    getContentsMargins(&left, &top, &right, &bottom);
    QRect effectiveRect = rect.adjusted(+left, +top, -right, -bottom);
    int x = effectiveRect.x();
    int y = effectiveRect.y();
    int lineHeight = 0;
 
    for (QLayoutItem *item : std::as_const(m_items)) {
        int nextX = x + item->sizeHint().width() + spacing();
        if (nextX - spacing() > effectiveRect.right() && lineHeight > 0) {
            x = effectiveRect.x();
            y = y + lineHeight + spacing();
            nextX = x + item->sizeHint().width() + spacing();
            lineHeight = 0;
        }
 
        if (!testOnly) {
            item->setGeometry(QRect(QPoint(x, y), item->sizeHint()));
        }
 
        x = nextX;
        lineHeight = qMax(lineHeight, item->sizeHint().height());
    }
    return y + lineHeight - rect.y() + bottom;
}

References m_items.

hasHeightForWidth()

bool KisWrappableHBoxLayout::hasHeightForWidth ( ) const

override

Definition at line 87 of file KisWrappableHBoxLayout.cpp.

{
    return true;
}

heightForWidth()

int KisWrappableHBoxLayout::heightForWidth ( int width ) const

override

Definition at line 92 of file KisWrappableHBoxLayout.cpp.

{
    int height = doLayout(QRect(0, 0, width, 0), true);
    return height;
}

References doLayout().

itemAt()

QLayoutItem * KisWrappableHBoxLayout::itemAt ( int idx ) const

override

Definition at line 71 of file KisWrappableHBoxLayout.cpp.

{
    return m_items.value(idx);
}

References m_items.

minimumSize()

QSize KisWrappableHBoxLayout::minimumSize ( ) const

override

Definition at line 42 of file KisWrappableHBoxLayout.cpp.

{
    const QMargins margins = contentsMargins();
    const QSize marginsSize = QSize(margins.left() + margins.right(), margins.top() + margins.bottom());
 
    QSize size;
    for (const QLayoutItem *item : std::as_const(m_items))
        size = size.expandedTo(item->minimumSize());
 
    if (!geometry().isEmpty()) {
        QSize optimal = QSize(geometry().width(), heightForWidth(geometry().width()));
        int minimumWidth = size.width(); // cannot be smaller than the biggest item
        int minimumHeight = qMax(size.height(), optimal.height());
        QSize minimum = QSize(minimumWidth, minimumHeight);
        return minimum;
    }
 
    size += marginsSize;
    //size = QSize(size.width(), size.height()*5);
    return size;
}

References heightForWidth(), and m_items.

setGeometry()

void KisWrappableHBoxLayout::setGeometry ( const QRect & rect )

override

Definition at line 81 of file KisWrappableHBoxLayout.cpp.

{
    QLayout::setGeometry(rect);
    doLayout(rect, false);
}

References doLayout().

sizeHint()

QSize KisWrappableHBoxLayout::sizeHint ( ) const

override

Definition at line 32 of file KisWrappableHBoxLayout.cpp.

{
    const QMargins margins = contentsMargins();
    if (!geometry().isEmpty()) {
        return QSize(geometry().width(), heightForWidth(geometry().width()))
                + QSize(margins.left() + margins.right(), margins.top() + margins.bottom());
    }
    return minimumSize();
}

References heightForWidth(), and minimumSize().

takeAt()

QLayoutItem * KisWrappableHBoxLayout::takeAt ( int idx )

override

Definition at line 76 of file KisWrappableHBoxLayout.cpp.

{
    return idx >= 0 && idx < m_items.size() ? m_items.takeAt(idx) : 0;
}

References m_items.

Member Data Documentation

m_items

QVector<QLayoutItem*> KisWrappableHBoxLayout::m_items

private

Definition at line 38 of file KisWrappableHBoxLayout.h.

m_lastWidth

int KisWrappableHBoxLayout::m_lastWidth {-1}

private

Definition at line 39 of file KisWrappableHBoxLayout.h.

{-1};

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The documentation for this class was generated from the following files:

• libs/widgetutils/KisWrappableHBoxLayout.h
• libs/widgetutils/KisWrappableHBoxLayout.cpp