src/gui/graphicsview/qgraphicsitem.cpp File Reference

#include "qgraphicsitem.h"
#include "qgraphicsscene.h"
#include "qgraphicsscene_p.h"
#include "qgraphicssceneevent.h"
#include "qgraphicsview.h"
#include <QtCore/qbitarray.h>
#include <QtCore/qdebug.h>
#include <QtCore/qpoint.h>
#include <QtCore/qtimer.h>
#include <QtCore/qvariant.h>
#include <QtGui/qapplication.h>
#include <QtGui/qbitmap.h>
#include <QtGui/qpainter.h>
#include <QtGui/qpainterpath.h>
#include <QtGui/qstyleoption.h>
#include <QtGui/qevent.h>
#include <private/qgraphicsitem_p.h>
#include <private/qtextcontrol_p.h>
#include <private/qtextengine_p.h>
#include <math.h>
#include "moc_qgraphicsitem.cpp"

Include dependency graph for qgraphicsitem.cpp:

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Classes
class	QGraphicsItemCustomDataStore
class	QAbstractGraphicsShapeItemPrivate
class	QGraphicsPathItemPrivate
class	QGraphicsRectItemPrivate
class	QGraphicsEllipseItemPrivate
class	QGraphicsPolygonItemPrivate
class	QGraphicsLineItemPrivate
class	QGraphicsPixmapItemPrivate
class	QGraphicsTextItemPrivate
class	QGraphicsSimpleTextItemPrivate
class	QGraphicsItemGroupPrivate
Functions
	Q_GLOBAL_STATIC (QGraphicsItemCustomDataStore, qt_dataStore)
static void	qt_graphicsItem_fullUpdate (QGraphicsItem *item)
static QPainterPath	qt_graphicsItem_shapeFromPath (const QPainterPath &path, const QPen &pen)
static QRectF	setupTextLayout (QTextLayout *layout)
QDebug	operator<< (QDebug debug, QGraphicsItem *item)

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Function Documentation

QDebug operator<<	(	QDebug	debug,
		QGraphicsItem *	item
	)

Definition at line 5821 of file qgraphicsitem.cpp.

{
    if (!item) {
        debug << "QGraphicsItem(0)";
        return debug;
    }

    QStringList flags;
    if (item->isVisible()) flags << QLatin1String("isVisible");
    if (item->isEnabled()) flags << QLatin1String("isEnabled");
    if (item->isSelected()) flags << QLatin1String("isSelected");
    if (item->hasFocus()) flags << QLatin1String("HasFocus");

    debug << "QGraphicsItem(this =" << ((void*)item)
          << ", parent =" << ((void*)item->parentItem())
          << ", pos =" << item->pos()
          << ", z =" << item->zValue() << ", flags = {"
          << flags.join(QLatin1String("|")) << " })";
    return debug;
}

Q_GLOBAL_STATIC	(	QGraphicsItemCustomDataStore	,
		qt_dataStore
	)

static void qt_graphicsItem_fullUpdate

(

QGraphicsItem *

item

)

[static]

Definition at line 362 of file qgraphicsitem.cpp.

References QGraphicsItem::children(), and QGraphicsItem::update().

Referenced by QGraphicsItem::setMatrix(), QGraphicsItem::setPos(), and QGraphicsItem::setZValue().

{
    item->update();
    foreach (QGraphicsItem *child, item->children())
        qt_graphicsItem_fullUpdate(child);
}

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static QPainterPath qt_graphicsItem_shapeFromPath	(	const QPainterPath &	path,
		const QPen &	pen
	)			[static]

Definition at line 375 of file qgraphicsitem.cpp.

References QPen::capStyle(), QPainterPathStroker::createStroke(), QPen::joinStyle(), QPen::miterLimit(), p, path, QPainterPathStroker::setCapStyle(), QPainterPathStroker::setJoinStyle(), QPainterPathStroker::setMiterLimit(), QPainterPathStroker::setWidth(), and QPen::widthF().

Referenced by QGraphicsPolygonItem::shape(), QGraphicsPathItem::shape(), QGraphicsLineItem::shape(), QGraphicsEllipseItem::shape(), and QGraphicsRectItem::shape().

{
    // We unfortunately need this hack as QPainterPathStroker will set a width of 1.0
    // if we pass a value of 0.0 to QPainterPathStroker::setWidth()
    const qreal penWidthZero = qreal(0.00000001);

    if (path == QPainterPath())
        return path;
    QPainterPathStroker ps;
    ps.setCapStyle(pen.capStyle());
    ps.setWidth(pen.widthF() <= 0.0 ? penWidthZero : pen.widthF());
    ps.setJoinStyle(pen.joinStyle());
    ps.setMiterLimit(pen.miterLimit());
    QPainterPath p = ps.createStroke(path);
    p.addPath(path);
    return p;
}

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static QRectF setupTextLayout

(

QTextLayout *

layout

)

[static]

Definition at line 5381 of file qgraphicsitem.cpp.

References i, layout, qMax(), and y.

Referenced by QGraphicsSimpleTextItem::paint(), and QGraphicsSimpleTextItemPrivate::updateBoundingRect().

{
    layout->setCacheEnabled(true);
    layout->beginLayout();
    while (layout->createLine().isValid())
        ;
    layout->endLayout();
    qreal maxWidth = 0;
    qreal y = 0;
    for (int i = 0; i < layout->lineCount(); ++i) {
        QTextLine line = layout->lineAt(i);
        maxWidth = qMax(maxWidth, line.naturalTextWidth());
        line.setPosition(QPointF(0, y));
        y += line.height();
    }
    return QRectF(0, 0, maxWidth, y);
}

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