Qt 4.8
Public Functions | List of all members
QVolatileImagePaintEngine Class Reference
Inheritance diagram for QVolatileImagePaintEngine:
QRasterPaintEngine QPaintEngineEx QPaintEngine

Public Functions

bool begin (QPaintDevice *device)
 Reimplement this function to initialise your paint engine when painting is to start on the paint device pdev. More...
 
void drawPixmap (const QPointF &p, const QPixmap &pm)
 
void drawPixmap (const QRectF &r, const QPixmap &pm, const QRectF &sr)
 Reimplement this function to draw the part of the pm specified by the sr rectangle in the given r. More...
 
bool end ()
 Reimplement this function to finish painting on the current paint device. More...
 
 QVolatileImagePaintEngine (QPaintDevice *device, QVolatileImage *img)
 
- Public Functions inherited from QRasterPaintEngine
void alphaPenBlt (const void *src, int bpl, int depth, int rx, int ry, int w, int h)
 
bool begin (QPaintDevice *device)
 Reimplemented Function More...
 
void brushChanged ()
 
void brushOriginChanged ()
 
void clip (const QVectorPath &path, Qt::ClipOperation op)
 
void clip (const QRect &rect, Qt::ClipOperation op)
 
void clip (const QRegion &region, Qt::ClipOperation op)
 
QRect clipBoundingRect () const
 Returns the bounding rect of the currently set clip. More...
 
void clipEnabledChanged ()
 
ClipType clipType () const
 Returns the type of the clip currently set. More...
 
void compositionModeChanged ()
 
QPoint coordinateOffset () const
 
QPainterStatecreateState (QPainterState *orig) const
 
virtual void drawBufferSpan (const uint *buffer, int bufsize, int x, int y, int length, uint const_alpha)
 Draws the given buffer. More...
 
virtual void drawColorSpans (const QSpan *spans, int count, uint color)
 Draws the given color spans with the specified color. More...
 
void drawEllipse (const QRectF &rect)
 Reimplemented Function More...
 
void drawImage (const QPointF &p, const QImage &img)
 
void drawImage (const QRectF &r, const QImage &pm, const QRectF &sr, Qt::ImageConversionFlags falgs=Qt::AutoColor)
 Reimplemented Function More...
 
void drawLines (const QLine *line, int lineCount)
 Reimplemented Function More...
 
void drawLines (const QLineF *line, int lineCount)
 Reimplemented Function More...
 
void drawPixmap (const QPointF &p, const QPixmap &pm)
 
void drawPixmap (const QRectF &r, const QPixmap &pm, const QRectF &sr)
 Reimplemented Function More...
 
void drawPoints (const QPointF *points, int pointCount)
 Reimplemented Function More...
 
void drawPoints (const QPoint *points, int pointCount)
 This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Draws the first pointCount points in the buffer points. More...
 
void drawPolygon (const QPointF *points, int pointCount, PolygonDrawMode mode)
 Reimplemented Function More...
 
void drawPolygon (const QPoint *points, int pointCount, PolygonDrawMode mode)
 Reimplemented Function More...
 
void drawRects (const QRect *rects, int rectCount)
 Reimplemented Function More...
 
void drawRects (const QRectF *rects, int rectCount)
 Reimplemented Function More...
 
void drawStaticTextItem (QStaticTextItem *textItem)
 Reimplemented Function More...
 
void drawTextItem (const QPointF &p, const QTextItem &textItem)
 Reimplemented Function More...
 
void drawTiledPixmap (const QRectF &r, const QPixmap &pm, const QPointF &sr)
 Reimplemented Function More...
 
bool end ()
 Reimplemented Function More...
 
void fill (const QVectorPath &path, const QBrush &brush)
 
void fillPath (const QPainterPath &path, QSpanData *fillData)
 
void fillPolygon (const QPointF *points, int pointCount, PolygonDrawMode mode)
 
void fillRect (const QRectF &rect, const QBrush &brush)
 Reimplemented Function More...
 
void fillRect (const QRectF &rect, const QColor &color)
 Reimplemented Function More...
 
CGContextRef getCGContext () const
 
HDC getDC () const
 
void opacityChanged ()
 
void penChanged ()
 
 QRasterPaintEngine (QPaintDevice *device)
 Creates a raster based paint engine for operating on the given device, with the complete set of QPaintEngine::PaintEngineFeature {paint engine features and capabilities}. More...
 
void releaseBuffer ()
 
void releaseDC (HDC hdc) const
 
void renderHintsChanged ()
 
void saveBuffer (const QString &s) const
 
void setCGContext (CGContextRef ref)
 
void setDC (HDC hdc)
 
void setState (QPainterState *s)
 
QSize size () const
 
QRasterPaintEngineStatestate ()
 
const QRasterPaintEngineStatestate () const
 
void stroke (const QVectorPath &path, const QPen &pen)
 
bool supportsTransformations (const QFontEngine *fontEngine) const
 
bool supportsTransformations (qreal pixelSize, const QTransform &m) const
 
void transformChanged ()
 
Type type () const
 Reimplemented Function More...
 
void updateBrush (const QBrush &brush)
 
void updateMatrix (const QTransform &matrix)
 
void updatePen (const QPen &pen)
 
 ~QRasterPaintEngine ()
 Destroys this paint engine. More...
 
- Public Functions inherited from QPaintEngineEx
virtual void beginNativePainting ()
 
virtual void clip (const QPainterPath &path, Qt::ClipOperation op)
 
virtual void draw (const QVectorPath &path)
 
virtual void drawEllipse (const QRect &r)
 The default implementation of this function calls the floating point version of this function. More...
 
virtual void drawPath (const QPainterPath &path)
 The default implementation ignores the path and does nothing. More...
 
virtual void drawPixmapFragments (const QPainter::PixmapFragment *fragments, int fragmentCount, const QPixmap &pixmap, QPainter::PixmapFragmentHints hints)
 
virtual void drawPixmapFragments (const QRectF *targetRects, const QRectF *sourceRects, int fragmentCount, const QPixmap &pixmap, QPainter::PixmapFragmentHints hints)
 
virtual void drawRoundedRect (const QRectF &rect, qreal xrad, qreal yrad, Qt::SizeMode mode)
 
virtual void endNativePainting ()
 
virtual uint flags () const
 
virtual QPixmapFilterpixmapFilter (int, const QPixmapFilter *)
 
 QPaintEngineEx ()
 
QPainterStatestate ()
 
const QPainterStatestate () const
 
virtual void sync ()
 
virtual void updateState (const QPaintEngineState &state)
 Reimplement this function to update the state of a paint engine. More...
 
- Public Functions inherited from QPaintEngine
void clearDirty (DirtyFlags df)
 
void fix_neg_rect (int *x, int *y, int *w, int *h)
 
bool hasFeature (PaintEngineFeatures feature) const
 Returns true if the paint engine supports the specified feature; otherwise returns false. More...
 
bool isActive () const
 Returns true if the paint engine is actively drawing; otherwise returns false. More...
 
bool isExtended () const
 Returns true if the paint engine is a QPaintEngineEx derivative. More...
 
QPaintDevicepaintDevice () const
 Returns the device that this engine is painting on, if painting is active; otherwise returns 0. More...
 
QPainterpainter () const
 Returns the paint engine's painter. More...
 
 QPaintEngine (PaintEngineFeatures features=0)
 Creates a paint engine with the featureset specified by caps. More...
 
void setActive (bool newState)
 Sets the active state of the paint engine to state. More...
 
void setDirty (DirtyFlags df)
 
void setPaintDevice (QPaintDevice *device)
 
void setSystemClip (const QRegion &baseClip)
 Sets the system clip for this engine. More...
 
void setSystemRect (const QRect &rect)
 Sets the target rect for drawing within the backing store. More...
 
void syncState ()
 Updates all dirty states in this engine. More...
 
QRegion systemClip () const
 Returns the system clip. More...
 
QRect systemRect () const
 Retrieves the rect for drawing within the backing store. More...
 
bool testDirty (DirtyFlags df)
 
virtual ~QPaintEngine ()
 Destroys the paint engine. More...
 

Additional Inherited Members

- Public Types inherited from QRasterPaintEngine
enum  ClipType { RectClip, ComplexClip }
 
- Public Types inherited from QPaintEngineEx
enum  Flags { DoNotEmulate = 0x01, IsEmulationEngine = 0x02 }
 
- Public Types inherited from QPaintEngine
enum  DirtyFlag {
  DirtyPen = 0x0001, DirtyBrush = 0x0002, DirtyBrushOrigin = 0x0004, DirtyFont = 0x0008,
  DirtyBackground = 0x0010, DirtyBackgroundMode = 0x0020, DirtyTransform = 0x0040, DirtyClipRegion = 0x0080,
  DirtyClipPath = 0x0100, DirtyHints = 0x0200, DirtyCompositionMode = 0x0400, DirtyClipEnabled = 0x0800,
  DirtyOpacity = 0x1000, AllDirty = 0xffff
}
 QPaintEngine::updateState(). More...
 
enum  PaintEngineFeature {
  PrimitiveTransform = 0x00000001, PatternTransform = 0x00000002, PixmapTransform = 0x00000004, PatternBrush = 0x00000008,
  LinearGradientFill = 0x00000010, RadialGradientFill = 0x00000020, ConicalGradientFill = 0x00000040, AlphaBlend = 0x00000080,
  PorterDuff = 0x00000100, PainterPaths = 0x00000200, Antialiasing = 0x00000400, BrushStroke = 0x00000800,
  ConstantOpacity = 0x00001000, MaskedBrush = 0x00002000, PerspectiveTransform = 0x00004000, BlendModes = 0x00008000,
  ObjectBoundingModeGradients = 0x00010000, RasterOpModes = 0x00020000, PaintOutsidePaintEvent = 0x20000000, AllFeatures = 0xffffffff
}
 This enum is used to describe the features or capabilities that the paint engine has. More...
 
enum  PolygonDrawMode { OddEvenMode, WindingMode, ConvexMode, PolylineMode }
 
enum  Type {
  X11, Windows, QuickDraw, CoreGraphics,
  MacPrinter, QWindowSystem, PostScript, OpenGL,
  Picture, SVG, Raster, Direct3D,
  Pdf, OpenVG, OpenGL2, PaintBuffer,
  Blitter, User = 50, MaxUser = 100
}
 
- Protected Functions inherited from QRasterPaintEngine
 QRasterPaintEngine (QRasterPaintEnginePrivate &d, QPaintDevice *)
 
- Protected Functions inherited from QPaintEngineEx
 QPaintEngineEx (QPaintEngineExPrivate &data)
 
- Protected Functions inherited from QPaintEngine
 QPaintEngine (QPaintEnginePrivate &data, PaintEngineFeatures devcaps=0)
 
- Protected Variables inherited from QPaintEngine
uint active: 1
 
QScopedPointer< QPaintEnginePrivated_ptr
 
uint extended: 1
 
PaintEngineFeatures gccaps
 
uint selfDestruct: 1
 
QPaintEngineStatestate
 

Detailed Description

Definition at line 56 of file qvolatileimage.cpp.

Constructors and Destructors

◆ QVolatileImagePaintEngine()

QVolatileImagePaintEngine::QVolatileImagePaintEngine ( QPaintDevice device,
QVolatileImage img 
)

Definition at line 275 of file qvolatileimage.cpp.

278 {
280  d->img = img;
281 }
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482
QRasterPaintEngine(QPaintDevice *device)
Creates a raster based paint engine for operating on the given device, with the complete set of QPain...

Functions

◆ begin()

bool QVolatileImagePaintEngine::begin ( QPaintDevice pdev)
virtual

Reimplement this function to initialise your paint engine when painting is to start on the paint device pdev.

Return true if the initialization was successful; otherwise return false.

See also
end() isActive()

Implements QPaintEngine.

Definition at line 283 of file qvolatileimage.cpp.

284 {
286  d->img->beginDataAccess();
287  return QRasterPaintEngine::begin(device);
288 }
double d
Definition: qnumeric_p.h:62
bool begin(QPaintDevice *device)
Reimplemented Function
#define Q_D(Class)
Definition: qglobal.h:2482

◆ drawPixmap() [1/2]

void QVolatileImagePaintEngine::drawPixmap ( const QPointF p,
const QPixmap pm 
)
virtual

Reimplemented from QPaintEngineEx.

Definition at line 301 of file qvolatileimage.cpp.

302 {
303 #ifdef Q_OS_SYMBIAN
304  QVolatileImage img = pm.pixmapData()->toVolatileImage();
305  if (!img.isNull()) {
306  img.beginDataAccess();
307  // imageRef() would detach and since we received the QVolatileImage from
308  // toVolatileImage() by value, it would cause a copy which would ruin
309  // our goal. So use constImageRef() instead.
311  img.endDataAccess(true);
312  } else {
314  }
315 #else
317 #endif
318 }
void beginDataAccess() const
const QImage & constImageRef() const
Non-detaching version, for read-only access only.
void endDataAccess(bool readOnly=false) const
bool isNull() const
void drawImage(const QPointF &p, const QImage &img)
void drawPixmap(const QPointF &p, const QPixmap &pm)
QPixmapData * pixmapData() const
Definition: qpixmap.cpp:2277

◆ drawPixmap() [2/2]

void QVolatileImagePaintEngine::drawPixmap ( const QRectF r,
const QPixmap pm,
const QRectF sr 
)
virtual

Reimplement this function to draw the part of the pm specified by the sr rectangle in the given r.

Implements QPaintEngineEx.

Definition at line 320 of file qvolatileimage.cpp.

321 {
322 #ifdef Q_OS_SYMBIAN
323  QVolatileImage img = pm.pixmapData()->toVolatileImage();
324  if (!img.isNull()) {
325  img.beginDataAccess();
327  img.endDataAccess(true);
328  } else {
330  }
331 #else
333 #endif
334 }
void beginDataAccess() const
const QImage & constImageRef() const
Non-detaching version, for read-only access only.
void endDataAccess(bool readOnly=false) const
bool isNull() const
void drawImage(const QPointF &p, const QImage &img)
void drawPixmap(const QPointF &p, const QPixmap &pm)
QPixmapData * pixmapData() const
Definition: qpixmap.cpp:2277

◆ end()

bool QVolatileImagePaintEngine::end ( )
virtual

Reimplement this function to finish painting on the current paint device.

Return true if painting was finished successfully; otherwise return false.

See also
begin() isActive()

Implements QPaintEngine.

Definition at line 290 of file qvolatileimage.cpp.

291 {
293  bool ret = QRasterPaintEngine::end();
294  d->img->endDataAccess();
295  return ret;
296 }
double d
Definition: qnumeric_p.h:62
#define Q_D(Class)
Definition: qglobal.h:2482
bool end()
Reimplemented Function

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