This document summarizes classes related to text formatting (QTextCharFormat), video playback (QCameraViewfinder, QGraphicsVideoItem, QVideoWidgetControl), camera access (QCamera, QCameraImageCapture), media objects (QMediaObject), table and list views (QHeaderView), and font metrics (QFontMetrics) in Qt. It provides documentation on class parameters, parent classes, and member functions for each class.

1. Ring Documentation, Release 1.5.2
94.133 QTextCharFormat Class
C++ Reference : http://doc.qt.io/qt-5/QTextCharFormat.html
Parameters : void
• QString anchorHref(void)
• QStringList anchorNames(void)
• QFont font(void)
• QFont::Capitalization fontCapitalization(void)
• QString fontFamily(void)
• bool fontFixedPitch(void)
• QFont::HintingPreference fontHintingPreference(void)
• bool fontItalic(void)
• bool fontKerning(void)
• qreal fontLetterSpacing(void)
• QFont::SpacingType fontLetterSpacingType(void)
• bool fontOverline(void)
• qreal fontPointSize(void)
• int fontStretch(void)
• bool fontStrikeOut(void)
• QFont::StyleHint fontStyleHint(void)
• QFont::StyleStrategy fontStyleStrategy(void)
• bool fontUnderline(void)
• int fontWeight(void)
• qreal fontWordSpacing(void)
• bool isAnchor(void)
• bool isValid(void)
• void setAnchor(bool anchor)
• void setAnchorHref( QString value)
• void setAnchorNames( QStringList names)
• void setFontCapitalization(QFont::Capitalization capitalization)
• void setFontFamily( QString family)
• void setFontFixedPitch(bool fixedPitch)
• void setFontHintingPreference(QFont::HintingPreference hintingPreference)
• void setFontItalic(bool italic)
• void setFontKerning(bool enable)
• void setFontLetterSpacing(qreal spacing)
94.133. QTextCharFormat Class 1675

2. Ring Documentation, Release 1.5.2
• void setFontLetterSpacingType(QFont::SpacingType letterSpacingType)
• void setFontOverline(bool overline)
• void setFontPointSize(qreal size)
• void setFontStretch(int factor)
• void setFontStrikeOut(bool strikeOut)
• void setFontStyleHint(QFont::StyleHint hint, QFont::StyleStrategy strategy )
• void setFontStyleStrategy(QFont::StyleStrategy strategy)
• void setFontUnderline(bool underline)
• void setFontWeight(int weight)
• void setFontWordSpacing(qreal spacing)
• void setTextOutline( QPen pen)
• void setToolTip( QString text)
• void setUnderlineColor( QColor color)
• void setUnderlineStyle(QTextCharFormat::UnderlineStyle style)
• void setVerticalAlignment(QTextCharFormat::VerticalAlignment alignment)
• QPen textOutline(void)
• QString toolTip(void)
• QColor underlineColor(void)
• QTextCharFormat::UnderlineStyle underlineStyle(void)
• QTextCharFormat::VerticalAlignment verticalAlignment(void)
94.134 QCameraViewfinder Class
C++ Reference : http://doc.qt.io/qt-5/QCameraViewfinder.html
Parameters : QWidget *
Parent Class : QVideoWidget
94.135 QGraphicsVideoItem Class
C++ Reference : http://doc.qt.io/qt-5/QGraphicsVideoItem.html
Parameters : void
• Qt::AspectRatioMode aspectRatioMode(void)
• QSizeF nativeSize(void)
• QPointF offset(void)
• void setAspectRatioMode(Qt::AspectRatioMode mode)
• void setOffset(QPointF offset)
• void setSize(QSizeF size)
94.134. QCameraViewfinder Class 1676

3. Ring Documentation, Release 1.5.2
• QSizeF size(void)
94.136 QVideoWidgetControl Class
C++ Reference : http://doc.qt.io/qt-5/QVideoWidgetControl.html
Parent Class : QMediaControl
94.137 QCamera Class
C++ Reference : http://doc.qt.io/qt-5/QCamera.html
Parameters : void
Parent Class : QMediaObject
• QCamera::CaptureModes captureMode(void)
• QCamera::Error error(void)
• QString errorString(void)
• QCameraExposure * exposure(void)
• QCameraFocus * focus(void)
• QCameraImageProcessing * imageProcessing(void)
• bool isCaptureModeSupported(QCamera::CaptureModes mode)
• QCamera::LockStatus lockStatus(void)
• QCamera::LockStatus lockStatus_2(QCamera::LockType lockType)
• QCamera::LockTypes requestedLocks(void)
• void setViewfinder(QVideoWidget * viewfinder)
• void setViewfinder_2(QGraphicsVideoItem * viewfinder)
• void setViewfinder_3(QAbstractVideoSurface * surface)
• QCamera::State state(void)
• QCamera::Status status(void)
• QCamera::LockTypes supportedLocks(void)
• void load(void)
• void searchAndLock(void)
• void searchAndLock_2(QCamera::LockTypes locks)
• void setCaptureMode(QCamera::CaptureModes mode)
• void start(void)
• void stop(void)
• void unload(void)
• void unlock(void)
• void unlock_2(QCamera::LockTypes locks)
94.136. QVideoWidgetControl Class 1677

4. Ring Documentation, Release 1.5.2
94.138 QCameraImageCapture Class
C++ Reference : http://doc.qt.io/qt-5/QCameraImageCapture.html
Parameters : QMediaObject * mediaObject
• QMultimedia::AvailabilityStatus availability(void)
• QVideoFrame::PixelFormat bufferFormat(void)
• QCameraImageCapture::CaptureDestinations captureDestination(void)
• QImageEncoderSettings encodingSettings(void)
• QCameraImageCapture::Error error(void)
• QString errorString(void)
• QString imageCodecDescription( QString codec)
• bool isAvailable(void)
• bool isCaptureDestinationSupported(QCameraImageCapture::CaptureDestinations destination)
• bool isReadyForCapture(void)
• void setBufferFormat( QVideoFrame::PixelFormat format)
• void setCaptureDestination(QCameraImageCapture::CaptureDestinations destination)
• void setEncodingSettings( QImageEncoderSettings settings)
• QList<QVideoFrame::PixelFormat> supportedBufferFormats(void)
• QStringList supportedImageCodecs(void)
• QList<QSize> supportedResolutions( QImageEncoderSettings settings , bool * continuous )
• void cancelCapture(void)
• int capture( QString file )
94.139 QMediaObject Class
C++ Reference : http://doc.qt.io/qt-5/QMediaObject.html
Parameters : void
Parent Class : QWidget
• QStringList availableMetaData(void)
• bool isMetaDataAvailable(void)
• QVariant metaData( QString key)
• int notifyInterval(void)
• void setNotifyInterval(int milliSeconds)
94.138. QCameraImageCapture Class 1678

5. Ring Documentation, Release 1.5.2
94.140 QHeaderView Class
C++ Reference : http://doc.qt.io/qt-5/QHeaderView.html
Parameters : Qt::Orientation, QWidget *
Parent Class : QAbstractItemView
• bool cascadingSectionResizes(void)
• int count(void)
• Qt::Alignment defaultAlignment(void)
• int defaultSectionSize(void)
• int hiddenSectionCount(void)
• void hideSection(int logicalIndex)
• bool highlightSections(void)
• bool isSectionHidden(int logicalIndex)
• bool isSortIndicatorShown(void)
• int length(void)
• int logicalIndex(int visualIndex)
• int logicalIndexAt(int position)
• int logicalIndexAt_2(int x, int y)
• int logicalIndexAt_3( QPoint pos)
• int maximumSectionSize(void)
• int minimumSectionSize_2(void)
• void moveSection(int from, int to)
• int offset(void)
• Qt::Orientation orientation(void)
• int resizeContentsPrecision(void)
• void resizeSection(int logicalIndex, int size)
• void resizeSections(QHeaderView::ResizeMode mode)
• bool restoreState( QByteArray state)
• QByteArray saveState(void)
• int sectionPosition(int logicalIndex)
• QHeaderView::ResizeMode sectionResizeMode(int logicalIndex)
• int sectionSize(int logicalIndex)
• int sectionSizeHint(int logicalIndex)
• int sectionViewportPosition(int logicalIndex)
• bool sectionsClickable(void)
• bool sectionsHidden(void)
94.140. QHeaderView Class 1679

6. Ring Documentation, Release 1.5.2
• bool sectionsMovable(void)
• bool sectionsMoved(void)
• void setCascadingSectionResizes(bool enable)
• void setDefaultAlignment(Qt::Alignment alignment)
• void setDefaultSectionSize(int size)
• void setHighlightSections(bool highlight)
• void setMaximumSectionSize(int size)
• void setMinimumSectionSize(int size)
• void setResizeContentsPrecision(int precision)
• void setSectionHidden(int logicalIndex, bool hide)
• void setSectionResizeMode(QHeaderView::ResizeMode mode)
• void setSectionResizeMode_2(int logicalIndex, QHeaderView::ResizeMode mode)
• void setSectionsClickable(bool clickable)
• void setSectionsMovable(bool movable)
• void setSortIndicator(int logicalIndex, Qt::SortOrder order)
• void setSortIndicatorShown(bool show)
• void setStretchLastSection(bool stretch)
• void showSection(int logicalIndex)
• Qt::SortOrder sortIndicatorOrder(void)
• int sortIndicatorSection(void)
• bool stretchLastSection(void)
• int stretchSectionCount(void)
• void swapSections(int first, int second)
• int visualIndex(int logicalIndex)
• int visualIndexAt(int position)
• void headerDataChanged(Qt::Orientation orientation, int logicalFirst, int logicalLast)
• void setOffset(int offset)
• void setOffsetToLastSection(void)
• void setOffsetToSectionPosition(int visualSectionNumber)
• void setgeometriesChangedEvent(const char *)
• void setsectionClickedEvent(const char *)
• void setsectionCountChangedEvent(const char *)
• void setsectionDoubleClickedEvent(const char *)
• void setsectionEnteredEvent(const char *)
• void setsectionHandleDoubleClickedEvent(const char *)
• void setsectionMovedEvent(const char *)
94.140. QHeaderView Class 1680

7. Ring Documentation, Release 1.5.2
• void setsectionPressedEvent(const char *)
• void setsectionResizedEvent(const char *)
• void setsortIndicatorChangedEvent(const char *)
• const char *getgeometriesChangedEvent(void)
• const char *getsectionClickedEvent(void)
• const char *getsectionCountChangedEvent(void)
• const char *getsectionDoubleClickedEvent(void)
• const char *getsectionEnteredEvent(void)
• const char *getsectionHandleDoubleClickedEvent(void)
• const char *getsectionMovedEvent(void)
• const char *getsectionPressedEvent(void)
• const char *getsectionResizedEvent(void)
• const char *getsortIndicatorChangedEvent(void)
• void geteventparameters(void)
94.141 QFontMetrics Class
C++ Reference : http://doc.qt.io/qt-5/QFontMetrics.html
Parameters : QFont
• int ascent(void)
• int averageCharWidth(void)
• QRect boundingRect(QChar ch)
• QRect boundingRect_2( QString text)
• QRect boundingRect_3(int x, int y, int width, int height, int flags, QString text, int tabStops , int * tabArray )
• QRect boundingRect_4( QRect rect, int flags, QString text, int tabStops , int * tabArray )
• int descent(void)
• QString elidedText( QString text, Qt::TextElideMode mode, int width, int flags )
• int height(void)
• bool inFont(QChar ch)
• bool inFontUcs4(uint character)
• int leading(void)
• int leftBearing(QChar ch)
• int lineSpacing(void)
• int lineWidth(void)
• int maxWidth(void)
• int minLeftBearing(void)
94.141. QFontMetrics Class 1681

8. Ring Documentation, Release 1.5.2
• int minRightBearing(void)
• int overlinePos(void)
• int rightBearing(QChar ch)
• QSize size(int flags, QString text, int tabStops , int * tabArray )
• int strikeOutPos(void)
• QRect tightBoundingRect( QString text)
• int underlinePos(void)
• int width( QString text, int len )
• int width_2(QChar ch)
• int xHeight(void)
94.142 QSplashScreen Class
C++ Reference : http://doc.qt.io/qt-5/QSplashScreen.html
Parameters : QPixmap
Parent Class : QWidget
• void finish(QWidget *mainWin)
• QPixmap pixmap(void)
• void repaint(void)
• void setPixmap(QPixmap pixmap)
• void clearMessage(void)
• void showMessage(QString message, int alignment ,QColor color)
94.143 QBoxLayout Class
C++ Reference : http://doc.qt.io/qt-5/QBoxLayout.html
Parameters : QBoxLayout::Direction dir, QWidget *parent
Parent Class : QLayout
• void addLayout(QLayout * layout, int stretch )
• void addSpacerItem(QSpacerItem * spacerItem)
• void addSpacing(int size)
• void addStretch(int stretch )
• void addStrut(int size)
• void addWidget(QWidget * widget, int stretch , Qt::Alignment alignment )
• QBoxLayout::Direction direction(void)
• void insertLayout(int index, QLayout * layout, int stretch )
• void insertSpacerItem(int index, QSpacerItem * spacerItem)
94.142. QSplashScreen Class 1682

9. Ring Documentation, Release 1.5.2
• void insertSpacing(int index, int size)
• void insertStretch(int index, int stretch )
• void insertWidget(int index, QWidget * widget, int stretch , Qt::Alignment alignment )
• void setDirection(QBoxLayout::Direction direction)
• void setSpacing(int spacing)
• void setStretch(int index, int stretch)
• bool setStretchFactor(QWidget * widget, int stretch)
• bool setStretchFactor_2(QLayout * layout, int stretch)
• int spacing(void)
• int stretch(int index)
94.144 QLayout Class
C++ Reference : http://doc.qt.io/qt-5/QLayout.html
Parameters : QWidget *
Parent Class : QObject
• bool activate(void)
• void addWidget(QWidget *w)
• QMargins contentsMargins(void)
• QRect contentsRect(void)
• void getContentsMargins(int *left, int *top, int *right, int *bottom)
• bool isEnabled(void)
• QWidget *menuBar(void)
• QWidget *parentWidget(void)
• void removeItem(QLayoutItem *item)
• void removeWidget(QWidget *widget)
• bool setAlignment(QWidget *w, Qt::Alignment alignment)
• void setAlignment_2(Qt::Alignment alignment)
• bool setAlignment_3(QLayout *l, Qt::Alignment alignment)
• void setContentsMargins(int left, int top, int right, int bottom)
• void setContentsMargins_2(QMargins margins)
• void setEnabled(bool enable)
• void setMenuBar(QWidget *widget)
• void setSizeConstraint(QLayout::SizeConstraint)
• void setSpacing(int)
• QLayout::SizeConstraint sizeConstraint(void)
94.144. QLayout Class 1683

10. Ring Documentation, Release 1.5.2
• int spacing(void)
• void update(void)
• QSize closestAcceptableSize( QWidget * widget, QSize size)
94.145 QLinearGradient Class
C++ Reference : http://doc.qt.io/qt-5/QLinearGradient.html
Parameters : void
Parent Class : QGradient
• QPointF finalStop(void)
• void setFinalStop(QPointF stop)
• void setFinalStop_2(qreal x,qreal y)
• void setStart(QPointF start)
• void setStart_2(qreal x,qreal y)
• QPointF start(void)
94.146 QGradient Class
C++ Reference : http://doc.qt.io/qt-5/QGradient.html
Parameters : void
• QGradient::CoordinateMode coordinateMode(void)
• void setColorAt(qreal position, QColor color)
• void setCoordinateMode(QGradient::CoordinateMode mode)
• void setSpread(QGradient::Spread method)
• void setStops(QGradientStops stopPoints)
• QGradient::Spread spread(void)
• QGradientStops stops(void)
• QGradient::Type type(void)
94.147 QPointF Class
C++ Reference : http://doc.qt.io/qt-5/QPointF.html
Parameters : void
• bool isNull(void)
• qreal manhattanLength(void)
• qreal rx(void)
• qreal ry(void)
94.145. QLinearGradient Class 1684