src/gui/kernel/qgridlayout.cpp File Reference

#include "qgridlayout.h"
#include "qapplication.h"
#include "qwidget.h"
#include "qlist.h"
#include "qsizepolicy.h"
#include "qvector.h"
#include "qlayoutengine_p.h"
#include "qlayout_p.h"

Include dependency graph for qgridlayout.cpp:

Go to the source code of this file.

Classes
class	QGridBox
class	QGridLayoutPrivate
Functions
static void	distributeMultiBox (QVector< QLayoutStruct > &chain, int spacing, int start, int end, int minSize, int sizeHint, QVector< int > &stretchArray, int stretch)
static bool	checkWidget (QLayout *l, QWidget *w)

---

Function Documentation

static bool checkWidget	(	QLayout *	l,
		QWidget *	w
	)			[static]

Definition at line 1167 of file qgridlayout.cpp.

References l, qWarning(), and w.

{
    if (!w) {
        qWarning("QLayout: Cannot add null widget to %s/%s", l->metaObject()->className(),
                  l->objectName().toLocal8Bit().data());
        return false;
    }
    return true;
}

Here is the call graph for this function:

static void distributeMultiBox	(	QVector< QLayoutStruct > &	chain,
		int	spacing,
		int	start,
		int	end,
		int	minSize,
		int	sizeHint,
		QVector< int > &	stretchArray,
		int	stretch
	)			[static]

Definition at line 485 of file qgridlayout.cpp.

References QVector< T >::empty(), i, qGeomCalc(), qMax(), QWIDGETSIZE_MAX, size, and w.

Referenced by QGridLayoutPrivate::setupHfwLayoutData(), and QGridLayoutPrivate::setupLayoutData().

{
    int i;
    int w = 0;
    int wh = 0;
    int max = 0;
    for (i = start; i <= end; i++) {
        w += chain[i].minimumSize;
        wh += chain[i].sizeHint;
        if (chain[i].empty)
            chain[i].maximumSize = QWIDGETSIZE_MAX;
        max += chain[i].maximumSize;
        chain[i].empty = false;
        if (stretchArray[i] == 0)
            chain[i].stretch = qMax(chain[i].stretch,stretch);
    }
    w += spacing * (end - start);
    wh += spacing * (end - start);
    max += spacing * (end - start);

    if (max < minSize) { // implies w < minSize
        /*
          We must increase the maximum size of at least one of the
          items. qGeomCalc() will put the extra space in between the
          items. We must recover that extra space and put it
          somewhere. It does not really matter where, since the user
          can always specify stretch factors and avoid this code.
        */
        qGeomCalc(chain, start, end - start + 1, 0, minSize, spacing);
        int pos = 0;
        for (i = start; i <= end; i++) {
            int nextPos = (i == end) ? minSize - 1 : chain[i + 1].pos;
            int realSize = nextPos - pos;
            if (i != end)
                realSize -= spacing;
            if (chain[i].minimumSize < realSize)
                chain[i].minimumSize = realSize;
            if (chain[i].maximumSize < chain[i].minimumSize)
                chain[i].maximumSize = chain[i].minimumSize;
            pos = nextPos;
        }
    } else if (w < minSize) {
        qGeomCalc(chain, start, end - start + 1, 0, minSize, spacing);
        for (i = start; i <= end; i++) {
            if (chain[i].minimumSize < chain[i].size)
                chain[i].minimumSize = chain[i].size;
        }
    }

    if (wh < sizeHint) {
        qGeomCalc(chain, start, end - start + 1, 0, sizeHint, spacing);
        for (i = start; i <= end; i++) {
            if (chain[i].sizeHint < chain[i].size)
                chain[i].sizeHint = chain[i].size;
        }
    }
}

Here is the call graph for this function:

---