qgridlayoutengine.cpp File Reference

#include "qglobal.h"
#include <math.h>
#include "qgraphicslayoutitem.h"
#include "qgridlayoutengine_p.h"
#include "qstyleoption.h"
#include "qvarlengtharray.h"
#include <QtDebug>
#include <QtCore/qmath.h>

Go to the source code of this file.

Functions
static qreal	compare (const QGridLayoutBox &box1, const QGridLayoutBox &box2, int which)
static qreal	fixedDescent (qreal descent, qreal ascent, qreal targetSize)
static qreal	growthFactorBelowPreferredSize (qreal desired, qreal sumAvailable, qreal sumDesired)
template<typename T >
static void	insertOrRemoveItems (QVector< T > &items, int index, int delta)
bool	operator== (const QGridLayoutBox &box1, const QGridLayoutBox &box2)
static void	visualRect (QRectF *geom, Qt::LayoutDirection dir, const QRectF &contentsRect)

Function Documentation

compare()

static qreal compare ( const QGridLayoutBox &  box1, const QGridLayoutBox &  box2, int  which  )

static

Definition at line 90 of file qgridlayoutengine.cpp.

Referenced by QGridLayoutRowData::distributeMultiCells().

{
    qreal size1 = box1.q_sizes(which);
    qreal size2 = box2.q_sizes(which);

    if (which == MaximumSize) {
        return size2 - size1;
    } else {
        return size1 - size2;
    }
}

fixedDescent()

static qreal fixedDescent ( qreal  descent, qreal  ascent, qreal  targetSize  )

static

Definition at line 77 of file qgridlayoutengine.cpp.

Referenced by QGridLayoutRowData::calculateGeometries(), and QGridLayoutEngine::fillRowData().

{
    if (descent < 0.0)
        return -1.0;

    Q_ASSERT(descent >= 0.0);
    Q_ASSERT(ascent >= 0.0);
    Q_ASSERT(targetSize >= ascent + descent);

    qreal extra = targetSize - (ascent + descent);
    return descent + (extra / qreal(2.0));
}

growthFactorBelowPreferredSize()

static qreal growthFactorBelowPreferredSize ( qreal  desired, qreal  sumAvailable, qreal  sumDesired  )

static

Definition at line 71 of file qgridlayoutengine.cpp.

Referenced by QGridLayoutRowData::calculateGeometries().

{
    Q_ASSERT(sumDesired != 0.0);
    return desired * qPow(sumAvailable / sumDesired, desired / sumDesired);
}

insertOrRemoveItems()

template<typename T >

static void insertOrRemoveItems ( QVector< T > &  items, int  index, int  delta  )

static

Definition at line 59 of file qgridlayoutengine.cpp.

Referenced by QGridLayoutRowInfo::insertOrRemoveRows().

{
    int count = items.count();
    if (index < count) {
        if (delta > 0) {
            items.insert(index, delta, T());
        } else if (delta < 0) {
            items.remove(index, qMin(-delta, count - index));
        }
    }
}

operator==()

bool operator==	(	const QGridLayoutBox &	box1,
		const QGridLayoutBox &	box2
	)

Definition at line 149 of file qgridlayoutengine.cpp.

Referenced by operator!=(), and QGridLayoutBox::q_sizes().

{
    for (int i = 0; i < NSizes; ++i) {
        if (box1.q_sizes(i) != box2.q_sizes(i))
            return false;
    }
    return box1.q_minimumDescent == box2.q_minimumDescent
           && box1.q_minimumAscent == box2.q_minimumAscent;
}

visualRect()

static void visualRect ( QRectF *  geom, Qt::LayoutDirection  dir, const QRectF &  contentsRect  )

static

Definition at line 1080 of file qgridlayoutengine.cpp.

Referenced by QGridLayoutEngine::setGeometries(), QWindowsMobileStyle::sizeFromContents(), and QWindowsMobileStyle::subControlRect().

{
    if (dir == Qt::RightToLeft)
        geom->moveRight(contentsRect.right() - (geom->left() - contentsRect.left()));
}