QBlitterPaintEnginePrivate Class Reference

Inheritance diagram for QBlitterPaintEnginePrivate:

Public Functions
void	clipAndDrawPixmap (const QRectF &clip, const QRectF &target, const QPixmap &pm, const QRectF &sr, bool opacity)
void	fillRect (const QRectF &rect, const QColor &, bool alpha)
void	lock ()
	QBlitterPaintEnginePrivate (QBlittablePixmapData *p)
void	unlock ()
void	updateBrushState (QPainterState *s)
void	updateClipState (QPainterState *s)
void	updateCompleteState (QPainterState *s)
void	updateCompositionModeState (QPainterState *s)
void	updateOpacityState (QPainterState *s)
void	updatePenState (QPainterState *s)
void	updateRenderHintsState (QPainterState *s)
void	updateTransformState (QPainterState *s)
Public Functions inherited from QRasterPaintEnginePrivate
QTransform	brushMatrix () const
bool	canUseFastImageBlending (QPainter::CompositionMode mode, const QImage &image) const
const QClipData *	clip () const
void	drawImage (const QPointF &pt, const QImage &img, SrcOverBlendFunc func, const QRect &clip, int alpha, const QRect &sr=QRect())
ProcessSpans	getBrushFunc (const QRect &rect, const QSpanData *data) const
ProcessSpans	getBrushFunc (const QRectF &rect, const QSpanData *data) const
ProcessSpans	getPenFunc (const QRectF &rect, const QSpanData *data) const
void	initializeRasterizer (QSpanData *data)
bool	isUnclipped (const QRect &rect, int penWidth) const
bool	isUnclipped (const QRectF &rect, int penWidth) const
bool	isUnclipped_normalized (const QRect &rect) const
	Returns true if the rectangle is completely within the current clip state of the paint engine. More...
void	prepare (QCustomRasterPaintDevice *)
	QRasterPaintEnginePrivate ()
void	rasterize (QT_FT_Outline *outline, ProcessSpans callback, QSpanData *spanData, QRasterBuffer *rasterBuffer)
void	rasterize (QT_FT_Outline *outline, ProcessSpans callback, void *userData, QRasterBuffer *rasterBuffer)
void	rasterizeLine_dashed (QLineF line, qreal width, int *dashIndex, qreal *dashOffset, bool *inDash)
void	recalculateFastImages ()
void	systemStateChanged ()
void	updateMatrixData (QSpanData *spanData, const QBrush &brush, const QTransform &brushMatrix)
Public Functions inherited from QPaintEngineExPrivate
bool	hasClipOperations () const
	QPaintEngineExPrivate ()
void	replayClipOperations ()
	~QPaintEngineExPrivate ()
Public Functions inherited from QPaintEnginePrivate
void	drawBoxTextItem (const QPointF &p, const QTextItemInt &ti)
	QPaintEnginePrivate ()
void	setSystemTransform (const QTransform &xform)
void	setSystemViewport (const QRegion &region)
void	transformSystemClip ()
virtual	~QPaintEnginePrivate ()

Public Variables
CapabilitiesToStateMask	caps
uint	hasXForm
QBlittablePixmapData *	pmData
Public Variables inherited from QRasterPaintEnginePrivate
QScopedPointer< QClipData >	baseClip
QStroker	basicStroker
QDataBuffer< QLineF >	cachedLines
QScopedPointer< QDashStroker >	dashStroker
QPaintDevice *	device
int	deviceDepth
QRect	deviceRect
QRect	deviceRectUnclipped
QFontEngineGlyphCache::Type	glyphCacheType
QScopedPointer< QT_FT_Raster >	grayRaster
HDC	hdc
QSpanData	image_filler
QSpanData	image_filler_xform
uint	isPlain45DegreeRotation: 1
uint	mono_surface: 1
QScopedPointer< QOutlineMapper >	outlineMapper
uint	outlinemapper_xform_dirty: 1
QScopedPointer< QRasterBuffer >	rasterBuffer
QScopedPointer< QRasterizer >	rasterizer
QSpanData	solid_color_filler
Public Variables inherited from QPaintEngineExPrivate
QStrokerOps *	activeStroker
QDashStroker	dasher
QRect	exDeviceRect
StrokeHandler *	strokeHandler
QStroker	stroker
QPen	strokerPen
Public Variables inherited from QPaintEnginePrivate
QWidget *	currentClipWidget
uint	hasSystemTransform: 1
uint	hasSystemViewport: 1
QPaintDevice *	pdev
QPaintEngine *	q_ptr
QRegion	systemClip
QRect	systemRect
QTransform	systemTransform
QRegion	systemViewport

Private Functions
	Q_DECLARE_PUBLIC (QBlitterPaintEngine)

Detailed Description

Definition at line 240 of file qpaintengine_blitter.cpp.

Constructors and Destructors

QBlitterPaintEnginePrivate()

QBlitterPaintEnginePrivate::QBlitterPaintEnginePrivate ( QBlittablePixmapData *  p )

inline

Definition at line 244 of file qpaintengine_blitter.cpp.

        : QRasterPaintEnginePrivate()
        , pmData(p)
        , caps(pmData->blittable()->capabilities())
        , hasXForm(false)

    {}

Functions

clipAndDrawPixmap()

void QBlitterPaintEnginePrivate::clipAndDrawPixmap	(	const QRectF &	clip,
		const QRectF &	target,
		const QPixmap &	pm,
		const QRectF &	sr,
		bool	opacity
	)

Definition at line 398 of file qpaintengine_blitter.cpp.

{
    Q_Q(QBlitterPaintEngine);
    QRectF intersectedRect = clip.intersected(target);
    if (intersectedRect.isEmpty())
        return;
    QRectF source = sr;
    if (intersectedRect.size() != target.size()) {
        if (sr.size() == target.size()) {
            // no resize
            qreal deltaTop = target.top() - intersectedRect.top();
            qreal deltaLeft = target.left() - intersectedRect.left();
            qreal deltaBottom = target.bottom() - intersectedRect.bottom();
            qreal deltaRight = target.right() - intersectedRect.right();
            source.adjust(-deltaLeft, -deltaTop, -deltaRight, -deltaBottom);
        } else {
            // resize case
            qreal hFactor = sr.size().width() / target.size().width();
            qreal vFactor = sr.size().height() / target.size().height();
            qreal deltaTop = (target.top() - intersectedRect.top()) * vFactor;
            qreal deltaLeft = (target.left() - intersectedRect.left()) * hFactor;
            qreal deltaBottom = (target.bottom() - intersectedRect.bottom()) * vFactor;
            qreal deltaRight = (target.right() - intersectedRect.right()) * hFactor;
            source.adjust(-deltaLeft, -deltaTop, -deltaRight, -deltaBottom);
        }
    }
    pmData->unmarkRasterOverlay(intersectedRect);
    if (opacity)
        pmData->blittable()->drawPixmapOpacity(intersectedRect, pm, source, q->state()->compositionMode(), q->state()->opacity);
    else
        pmData->blittable()->drawPixmap(intersectedRect, pm, source);
}

fillRect()

void QBlitterPaintEnginePrivate::fillRect	(	const QRectF &	rect,
		const QColor &	color,
		bool	alpha
	)

Definition at line 350 of file qpaintengine_blitter.cpp.

{
    Q_Q(QBlitterPaintEngine);
    pmData->unmarkRasterOverlay(rect);
    QRectF targetRect = rect;
    if (hasXForm)
        targetRect = q->state()->matrix.mapRect(rect);
    const QClipData *clipData = clip();
    if (clipData) {
        if (clipData->hasRectClip) {
            unlock();
            if (alpha)
                pmData->blittable()->alphaFillRect(targetRect & clipData->clipRect, color, q->state()->compositionMode());
            else
                pmData->blittable()->fillRect(targetRect & clipData->clipRect, color);
        } else if (clipData->hasRegionClip) {
            QVector<QRect> rects = clipData->clipRegion.rects();
            for (int i = 0; i < rects.size(); ++i) {
                QRect intersectRect = rects.at(i).intersected(targetRect.toRect());
                if (!intersectRect.isEmpty()) {
                    unlock();
                    if (alpha)
                        pmData->blittable()->alphaFillRect(intersectRect, color, q->state()->compositionMode());
                    else
                        pmData->blittable()->fillRect(intersectRect, color);
                }
            }
        }
    } else {
        if (targetRect.x() >= 0 && targetRect.y() >= 0
            && targetRect.width() <= q->paintDevice()->width()
            && targetRect.height() <= q->paintDevice()->height()) {
            unlock();
            if (alpha)
                pmData->blittable()->alphaFillRect(targetRect, color, q->state()->compositionMode());
            else
                pmData->blittable()->fillRect(targetRect, color);
        } else {
            QRectF deviceRect(0, 0, q->paintDevice()->width(), q->paintDevice()->height());
            unlock();
            if (alpha)
                pmData->blittable()->alphaFillRect(deviceRect & targetRect, color, q->state()->compositionMode());
            else
                pmData->blittable()->fillRect(deviceRect & targetRect, color);
        }
    }
}

lock()

void QBlitterPaintEnginePrivate::lock ( )

inline

Definition at line 272 of file qpaintengine_blitter.cpp.

{
    if (!pmData->blittable()->isLocked())
        rasterBuffer->prepare(pmData->buffer());
}

Q_DECLARE_PUBLIC()

QBlitterPaintEnginePrivate::Q_DECLARE_PUBLIC ( QBlitterPaintEngine  )

private

unlock()

void QBlitterPaintEnginePrivate::unlock ( )

inline

Definition at line 278 of file qpaintengine_blitter.cpp.

{
    pmData->blittable()->unlock();
}

updateBrushState()

void QBlitterPaintEnginePrivate::updateBrushState

(

QPainterState *

s

)

Definition at line 300 of file qpaintengine_blitter.cpp.

{
    Qt::BrushStyle style = qbrush_style(s->brush);

    caps.updateState(STATE_BRUSH_PATTERN, style > Qt::SolidPattern);
    caps.updateState(STATE_BRUSH_ALPHA,
                        qbrush_color(s->brush).alpha() < 255);
}

updateClipState()

void QBlitterPaintEnginePrivate::updateClipState

(

QPainterState *

s

)

Definition at line 343 of file qpaintengine_blitter.cpp.

{
    const QClipData *clipData = clip();
    bool complexClip = clipData && !(clipData->hasRectClip || clipData->hasRegionClip);
    caps.updateState(STATE_CLIP_COMPLEX, complexClip);
}

updateCompleteState()

void QBlitterPaintEnginePrivate::updateCompleteState

(

QPainterState *

s

)

Definition at line 284 of file qpaintengine_blitter.cpp.

{
    updatePenState(s);
    updateBrushState(s);
    updateOpacityState(s);
    updateCompositionModeState(s);
    updateRenderHintsState(s);
    updateTransformState(s);
    updateClipState(s);
}

updateCompositionModeState()

void QBlitterPaintEnginePrivate::updateCompositionModeState

(

QPainterState *

s

)

Definition at line 315 of file qpaintengine_blitter.cpp.

{
    bool nonTrivial = s->composition_mode != QPainter::CompositionMode_SourceOver
                      && s->composition_mode != QPainter::CompositionMode_Source;

    caps.updateState(STATE_BLENDING_COMPLEX, nonTrivial);
}

updateOpacityState()

void QBlitterPaintEnginePrivate::updateOpacityState

(

QPainterState *

s

)

Definition at line 309 of file qpaintengine_blitter.cpp.

{
    bool translucent = s->opacity < 1;
    caps.updateState(STATE_ALPHA, translucent);
}

updatePenState()

void QBlitterPaintEnginePrivate::updatePenState

(

QPainterState *

s

)

Definition at line 295 of file qpaintengine_blitter.cpp.

{
    caps.updateState(STATE_PEN_ENABLED, qpen_style(s->pen) != Qt::NoPen);
}

updateRenderHintsState()

void QBlitterPaintEnginePrivate::updateRenderHintsState

(

QPainterState *

s

)

Definition at line 323 of file qpaintengine_blitter.cpp.

{
    bool aa = s->renderHints & QPainter::Antialiasing;
    caps.updateState(STATE_ANTIALIASING, aa);
}

updateTransformState()

void QBlitterPaintEnginePrivate::updateTransformState

(

QPainterState *

s

)

Definition at line 329 of file qpaintengine_blitter.cpp.

{
    QTransform::TransformationType type = s->matrix.type();

    // consider scaling operations with a negative factor as "complex" for now.
    // as some blitters could handle axisymmetrical operations, we should improve blitter
    // paint engine to handle them as a capability
    caps.updateState(STATE_XFORM_COMPLEX, (type > QTransform::TxScale) ||
        ((type == QTransform::TxScale) && ((s->matrix.m11() < 0.0) || (s->matrix.m22() < 0.0))));
    caps.updateState(STATE_XFORM_SCALE, type > QTransform::TxTranslate);

    hasXForm = type >= QTransform::TxTranslate;
}

Properties

caps

CapabilitiesToStateMask QBlitterPaintEnginePrivate::caps

Definition at line 268 of file qpaintengine_blitter.cpp.

hasXForm

uint QBlitterPaintEnginePrivate::hasXForm

Definition at line 269 of file qpaintengine_blitter.cpp.

pmData

QBlittablePixmapData* QBlitterPaintEnginePrivate::pmData

Definition at line 267 of file qpaintengine_blitter.cpp.

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

• /src/gui/painting/qpaintengine_blitter.cpp