QPaintEnginePrivate Class Reference

#include <qpaintengine_p.h>

Inheritance diagram for QPaintEnginePrivate:

Public Functions
void	drawBoxTextItem (const QPointF &p, const QTextItemInt &ti)
	QPaintEnginePrivate ()
void	setSystemTransform (const QTransform &xform)
void	setSystemViewport (const QRegion &region)
virtual void	systemStateChanged ()
void	transformSystemClip ()
virtual	~QPaintEnginePrivate ()

Public Variables
QWidget *	currentClipWidget
uint	hasSystemTransform: 1
uint	hasSystemViewport: 1
QPaintDevice *	pdev
QPaintEngine *	q_ptr
QRegion	systemClip
QRect	systemRect
QTransform	systemTransform
QRegion	systemViewport

Detailed Description

Definition at line 65 of file qpaintengine_p.h.

Constructors and Destructors

QPaintEnginePrivate()

QPaintEnginePrivate::QPaintEnginePrivate ( )

inline

Definition at line 69 of file qpaintengine_p.h.

                          : pdev(0), q_ptr(0), currentClipWidget(0), hasSystemTransform(0),
                            hasSystemViewport(0) {}

~QPaintEnginePrivate()

virtual QPaintEnginePrivate::~QPaintEnginePrivate ( )

inlinevirtual

Definition at line 71 of file qpaintengine_p.h.

{ }

Functions

drawBoxTextItem()

void QPaintEnginePrivate::drawBoxTextItem	(	const QPointF &	p,
		const QTextItemInt &	ti
	)

Definition at line 1098 of file qpaintengine.cpp.

Referenced by systemStateChanged().

{
    if (!ti.glyphs.numGlyphs)
        return;

    // any fixes here should probably also be done in QFontEngineBox::draw
    const int size = qRound(ti.fontEngine->ascent());
    QVarLengthArray<QFixedPoint> positions;
    QVarLengthArray<glyph_t> glyphs;
    QTransform matrix = QTransform::fromTranslate(p.x(), p.y() - size);
    ti.fontEngine->getGlyphPositions(ti.glyphs, matrix, ti.flags, glyphs, positions);
    if (glyphs.size() == 0)
        return;

    QSize s(size - 3, size - 3);

    QPainter *painter = q_func()->state->painter();
    painter->save();
    painter->setBrush(Qt::NoBrush);
    QPen pen = painter->pen();
    pen.setWidthF(ti.fontEngine->lineThickness().toReal());
    painter->setPen(pen);
    for (int k = 0; k < positions.size(); k++)
        painter->drawRect(QRectF(positions[k].toPointF(), s));
    painter->restore();
}

setSystemTransform()

void QPaintEnginePrivate::setSystemTransform ( const QTransform &  xform )

inline

Definition at line 104 of file qpaintengine_p.h.

Referenced by QPainterPrivate::attachPainterPrivate(), and QWidget::render().

    {
        systemTransform = xform;
        if ((hasSystemTransform = !xform.isIdentity()) || hasSystemViewport)
            transformSystemClip();
        systemStateChanged();
    }

setSystemViewport()

void QPaintEnginePrivate::setSystemViewport ( const QRegion &  region )

inline

Definition at line 112 of file qpaintengine_p.h.

Referenced by QWidget::render().

    {
        systemViewport = region;
        hasSystemViewport = !systemViewport.isEmpty();
    }

systemStateChanged()

virtual void QPaintEnginePrivate::systemStateChanged ( )

inlinevirtual

Reimplemented in QOpenGLPaintEnginePrivate, QPaintBufferEnginePrivate, QRasterPaintEnginePrivate, QGL2PaintEngineExPrivate, QX11PaintEnginePrivate, QVGPaintEnginePrivate, and QDirectFBPaintEnginePrivate.

Definition at line 118 of file qpaintengine_p.h.

Referenced by QPainterPrivate::attachPainterPrivate(), QPainterReplayer::process(), and setSystemTransform().

{ }

transformSystemClip()

void QPaintEnginePrivate::transformSystemClip ( )

inline

Definition at line 82 of file qpaintengine_p.h.

Referenced by setSystemTransform().

    {
        if (systemClip.isEmpty())
            return;

        if (hasSystemTransform) {
            if (systemTransform.type() <= QTransform::TxTranslate)
                systemClip.translate(qRound(systemTransform.dx()), qRound(systemTransform.dy()));
            else
                systemClip = systemTransform.map(systemClip);
        }

        // Make sure we're inside the viewport.
        if (hasSystemViewport) {
            systemClip &= systemViewport;
            if (systemClip.isEmpty()) {
                // We don't want to paint without system clip, so set it to 1 pixel :)
                systemClip = QRect(systemViewport.boundingRect().topLeft(), QSize(1, 1));
            }
        }
    }

Properties

currentClipWidget

QWidget* QPaintEnginePrivate::currentClipWidget

Definition at line 78 of file qpaintengine_p.h.

Referenced by QPainterPrivate::attachPainterPrivate().

hasSystemTransform

uint QPaintEnginePrivate::hasSystemTransform

Definition at line 79 of file qpaintengine_p.h.

Referenced by setSystemTransform(), and transformSystemClip().

hasSystemViewport

uint QPaintEnginePrivate::hasSystemViewport

Definition at line 80 of file qpaintengine_p.h.

Referenced by setSystemTransform(), setSystemViewport(), and transformSystemClip().

pdev

QPaintDevice* QPaintEnginePrivate::pdev

Definition at line 72 of file qpaintengine_p.h.

Referenced by QAlphaPaintEngine::begin().

q_ptr

QPaintEngine* QPaintEnginePrivate::q_ptr

Definition at line 73 of file qpaintengine_p.h.

Referenced by QPSPrintEnginePrivate::emitHeader(), and QPaintEngine::QPaintEngine().

systemClip

QRegion QPaintEnginePrivate::systemClip

Definition at line 74 of file qpaintengine_p.h.

Referenced by QWidget::render().

systemRect

QRect QPaintEnginePrivate::systemRect

Definition at line 75 of file qpaintengine_p.h.

systemTransform

QTransform QPaintEnginePrivate::systemTransform

Definition at line 77 of file qpaintengine_p.h.

Referenced by QWidget::render().

systemViewport

QRegion QPaintEnginePrivate::systemViewport

Definition at line 76 of file qpaintengine_p.h.

Referenced by QWidget::render(), and transformSystemClip().

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

• /src/gui/painting/qpaintengine_p.h
• /src/gui/painting/qpaintengine.cpp