qgraphicslayoutitem.cpp File Reference

#include "qglobal.h"
#include "qgraphicslayout.h"
#include "qgraphicsscene.h"
#include "qgraphicslayoutitem.h"
#include "qgraphicslayoutitem_p.h"
#include "qwidget.h"
#include "qgraphicswidget.h"
#include <QtDebug>

Go to the source code of this file.

Macros
#define	COMBINE_SIZE(result, size)

Functions
static void	boundSize (QSizeF &result, const QSizeF &size)
static void	combineSize (QSizeF &result, const QSizeF &size)
static void	expandSize (QSizeF &result, const QSizeF &size)
static void	normalizeHints (qreal &minimum, qreal &preferred, qreal &maximum, qreal &descent)

Macro Definition Documentation

COMBINE_SIZE

#define COMBINE_SIZE	(		result,
			size
	)

Value:

do { \
        if ((result).width() < 0 || (result).height() < 0) \
            combineSize((result), (size)); \
    } while (false)

Definition at line 61 of file qgraphicslayoutitem.cpp.

Referenced by QGraphicsLayoutItemPrivate::effectiveSizeHints().

Function Documentation

boundSize()

static void boundSize ( QSizeF &  result, const QSizeF &  size  )

static

Definition at line 75 of file qgraphicslayoutitem.cpp.

Referenced by QGraphicsLayoutItemPrivate::effectiveSizeHints().

{
    if (size.width() >= 0 && size.width() < result.width())
        result.setWidth(size.width());
    if (size.height() >= 0 && size.height() < result.height())
        result.setHeight(size.height());
}

combineSize()

static void combineSize ( QSizeF &  result, const QSizeF &  size  )

static

Definition at line 67 of file qgraphicslayoutitem.cpp.

Referenced by QGraphicsLayoutItemPrivate::effectiveSizeHints().

{
    if (result.width() < 0)
        result.setWidth(size.width());
    if (result.height() < 0)
        result.setHeight(size.height());
}

expandSize()

static void expandSize ( QSizeF &  result, const QSizeF &  size  )

static

Definition at line 83 of file qgraphicslayoutitem.cpp.

Referenced by QGraphicsLayoutItemPrivate::effectiveSizeHints().

{
    if (size.width() >= 0 && size.width() > result.width())
        result.setWidth(size.width());
    if (size.height() >= 0 && size.height() > result.height())
        result.setHeight(size.height());
}

normalizeHints()

static void normalizeHints ( qreal &  minimum, qreal &  preferred, qreal &  maximum, qreal &  descent  )

static

Definition at line 91 of file qgraphicslayoutitem.cpp.

Referenced by QGraphicsLayoutItemPrivate::effectiveSizeHints().

{
    if (minimum >= 0 && maximum >= 0 && minimum > maximum)
        minimum = maximum;

    if (preferred >= 0) {
        if (minimum >= 0 && preferred < minimum) {
            preferred = minimum;
        } else if (maximum >= 0 && preferred > maximum) {
            preferred = maximum;
        }
    }

    if (minimum >= 0 && descent > minimum)
        descent = minimum;
}