This document provides documentation on various Qt classes related to 2D graphics and painting. It includes documentation on classes like QPainter, QPixmap, QPicture, QPen, and others that provide functionality for drawing 2D graphics, working with images, and handling painting operations. For each class, it lists the class name, reference URL, constructor parameters, parent class if any, and member functions.

1. Ring Documentation, Release 1.9
• void setMinMagFilters(QOpenGLTexture::Filter minificationQOpenGLTexture::Filter, QOpenGLTex-
ture::Filter magnificationQOpenGLTexture::Filter)
• void setMinificationFilter(QOpenGLTexture::Filter filter)
• void setMinimumLevelOfDetail(float value)
• void setMipBaseLevel(int baseLevel)
• void setMipLevelRange(int baseLevel, int maxLevel)
• void setMipLevels(int levels)
• void setMipMaxLevel(int maxLevel)
• void setSwizzleMask(QOpenGLTexture::SwizzleComponent component, QOpenGLTexture::SwizzleValue
value)
• void setSwizzleMask_2(QOpenGLTexture::SwizzleValue r, QOpenGLTexture::SwizzleValue g, QOpenGLTex-
ture::SwizzleValue b, QOpenGLTexture::SwizzleValue a)
• void setWrapMode(QOpenGLTexture::WrapMode mode)
• void setWrapMode_2(QOpenGLTexture::CoordinateDirection direction, QOpenGLTexture::WrapMode mode)
• QOpenGLTexture::SwizzleValue swizzleMask(QOpenGLTexture::SwizzleComponent component)
• int width(void)
• QOpenGLTexture::WrapMode wrapMode(QOpenGLTexture::CoordinateDirection direction)
• GLuint boundTextureId(QOpenGLTexture::BindingTarget target)
87.145 QOpenGLTimerQuery Class
C++ Reference : http://doc.qt.io/qt-5/QOpenGLTimerQuery.html
Parameters : QObject *
• void begin(void)
• bool create(void)
• void destroy(void)
• void end(void)
• bool isCreated(void)
• bool isResultAvailable(void)
• GLuint objectId(void)
• void recordTimestamp(void)
• GLuint64 waitForResult(void)
• GLuint64 waitForTimestamp(void)
87.146 QOpenGLVersionProfile Class
C++ Reference : http://doc.qt.io/qt-5/QOpenGLVersionProfile.html
Parameters : void
87.145. QOpenGLTimerQuery Class 1099

2. Ring Documentation, Release 1.9
• bool hasProfiles(void)
• bool isLegacyVersion(void)
• bool isValid(void)
• QSurfaceFormat::OpenGLContextProfile profile(void)
• void setProfile(QSurfaceFormat::OpenGLContextProfile profile)
• void setVersion(int majorVersion, int minorVersion)
• QPair<int, int> version(void)
87.147 QOpenGLVertexArrayObject Class
C++ Reference : http://doc.qt.io/qt-5/QOpenGLVertexArrayObject.html
Parameters : QObject *
• void bind(void)
• bool create(void)
• void destroy(void)
• bool isCreated(void)
• GLuint objectId(void)
• void release(void)
87.148 QOpenGLWidget Class
C++ Reference : http://doc.qt.io/qt-5/QOpenGLWidget.html
Parameters : QWidget *
Parent Class : QWidget
• void geteventparameters(void)
• void setInitEvent(const char *cStr)
• const char *getInitEvent(void)
• void setPaintEvent(const char *cStr)
• const char *getPaintEvent(void)
• void setResizeEvent(const char *cStr)
• const char *getResizeEvent(void)
• QOpenGLContext * context(void)
• GLuint defaultFramebufferObject(void)
• void doneCurrent(void)
• QSurfaceFormat format(void)
• QImage grabFramebuffer(void)
• bool isValid(void)
87.147. QOpenGLVertexArrayObject Class 1100

3. Ring Documentation, Release 1.9
• void makeCurrent(void)
• void setFormat(QSurfaceFormat format)
• QOpenGLWidget::UpdateBehavior updateBehavior(void)
87.149 QPageSetupDialog Class
C++ Reference : http://doc.qt.io/qt-5/QPageSetupDialog.html
Parameters : QPrinter *,QWidget *
Parent Class : QDialog
• void open(QObject * receiver, char * member)
• QPrinter * printer(void)
87.150 QPaintDevice Class
C++ Reference : http://doc.qt.io/qt-5/QPaintDevice.html
• int colorCount(void)
• int depth(void)
• int devicePixelRatio(void)
• int heightMM(void)
• int logicalDpiX(void)
• int logicalDpiY(void)
• QPaintEngine * paintEngine(void)
• bool paintingActive(void)
• int physicalDpiX(void)
• int physicalDpiY(void)
• int width(void)
• int widthMM(void)
87.151 QPainter Class
C++ Reference : http://doc.qt.io/qt-5/QPainter.html
Parameters : void
• QBrush background(void)
• int backgroundMode(void)
• bool begin(QPaintDevice *device)
• void beginNativePainting(void)
• QRect boundingRect(int x, int y, int w, int h, int flags, QString text)
87.149. QPageSetupDialog Class 1101

4. Ring Documentation, Release 1.9
• QBrush brush(void)
• QPoint brushOrigin(void)
• QRectF clipBoundingRect(void)
• QPainterPath clipPath(void)
• QRegion clipRegion(void)
• QTransform combinedTransform(void)
• int compositionMode(void)
• QPaintDevice *device(void)
• QTransform deviceTransform(void)
• void drawArc(int x, int y, int width, int height, int startAngle, int spanAngle)
• void drawChord(int x, int y, int width, int height, int startAngle, int spanAngle)
• void drawEllipse(int x, int y, int width, int height)
• void drawGlyphRun(QPointF position, QGlyphRun glyphs)
• void drawImage(int x, int y, QImage image)
• void drawLine(int x1, int y1, int x2, int y2)
• void drawLines(QLine *lines, int lineCount)
• void drawPath(QPainterPath path)
• void drawPicture(int x, int y, QPicture picture)
• void drawPie(int x, int y, int width, int height, int startAngle, int spanAngle)
• void drawPixmap(int x, int y, QPixmap)
• void drawPoint(int x, int y)
• void drawRect(int x, int y, int width, int height)
• void drawRects(QRectF *rectangles, int rectCount)
• void drawRoundedRect(int x, int y, int w, int h, qreal xRadius, qreal yRadius, Qt::SizeMode mode)
• void drawStaticText(int left, int top, QStaticText staticText)
• void drawText(int x, int y, QString text)
• void drawTiledPixmap(int x, int y, int width, int height, QPixmap pixmap, int sx, int sy)
• bool end(void) # In RingQt use : bool endpaint(void)
• void endNativePainting(void)
• void eraseRect(int x, int y, int width, int height)
• void fillPath(QPainterPath path, QBrush brush)
• void fillRect(int x, int y, int width, int height, QBrush)
• QFont font(void)
• QFontInfo fontInfo(void)
• bool hasClipping(void)
• void initFrom(QWidget *widget)
87.151. QPainter Class 1102

5. Ring Documentation, Release 1.9
• bool isActive(void)
• int layoutDirection(void)
• double opacity(void)
• QPaintEngine *paintEngine(void)
• QPen pen(void)
• int renderHints(void)
• void resetTransform(void)
• void restore(void)
• void rotate(qreal angle)
• void save(void)
• void scale(double sx, double sy)
• void setBackground(QBrush brush)
• void setBackgroundMode(Qt::BGMode mode)
• void setBrush(QBrush brush)
• void setBrushOrigin(int x, int y)
• void setClipPath(QPainterPath path, Qt::ClipOperation operation)
• void setClipRect(int x, int y, int width, int height, Qt::ClipOperation operation)
• void setClipRegion(QRegion region, Qt::ClipOperation operation)
• void setClipping(bool enable)
• void setCompositionMode(QPainter::CompositionMode mode)
• void setFont(QFont font)
• void setLayoutDirection(Qt::LayoutDirection direction)
• void setOpacity(qreal opacity)
• void setPen(QPen pen)
• void setRenderHint(QPainter::RenderHint hint, bool on)
• void setTransform(QTransform transform, bool combine)
• void setViewTransformEnabled(bool enable)
• void setViewport(int x, int y, int width, int height)
• void setWindow(int x, int y, int width, int height)
• void setWorldMatrixEnabled(bool enable)
• void setWorldTransform( QTransform matrix, bool combine)
• void shear(double sh, double sv)
• void strokePath(QPainterPath path, QPen pen)
• bool testRenderHint(QPainter::RenderHint hint)
• QTransform transform(void)
• void translate(double dx, double dy)
87.151. QPainter Class 1103

6. Ring Documentation, Release 1.9
• bool viewTransformEnabled(void)
• QRect viewport(void)
• QRect window(void)
• bool worldMatrixEnabled(void)
• QTransform worldTransform(void)
• void drawPolygon(List *pPoints, Qt::FillRule fillRule)
• void drawConvexPolygon(List *pPoints)
• void drawPoints(List *pPoints)
• void drawPolyline(List *pPoints)
87.152 QPainter2 Class
C++ Reference : http://doc.qt.io/qt-5/QPainter2.html
Parameters : QPaintDevice *
Parent Class : QPainter
87.153 QPainterPath Class
C++ Reference : http://doc.qt.io/qt-5/QPainterPath.html
Parameters : void
• void addEllipse(qreal x, qreal y, qreal width, qreal height)
• void addPath(QPainterPath)
• void addPolygon(QPolygonF)
• void addRect(qreal x, qreal y, qreal width, qreal height)
• void addRegion(QRegion)
• void addRoundedRect(qreal x, qreal y, qreal w, qreal h, qreal xRadius, qreal yRadius, Qt::SizeMode mode)
• void addText(qreal x, qreal y, QFont, QString)
• qreal angleAtPercent(qreal t)
• void arcMoveTo(qreal x, qreal y, qreal width, qreal height, qreal angle)
• void arcTo(qreal x, qreal y, qreal width, qreal height, qreal startAngle, qreal sweepLength)
• QRectF boundingRect(void)
• void closeSubpath(void)
• void connectPath(QPainterPath)
• bool contains(QPointF)
• QRectF controlPointRect(void)
• void cubicTo(qreal c1X, qreal c1Y, qreal c2X, qreal c2Y, qreal endPointX, qreal endPointY)
• QPointF currentPosition(void)
87.152. QPainter2 Class 1104

7. Ring Documentation, Release 1.9
• QPainterPath::Element elementAt(int index)
• int elementCount(void)
• Qt::FillRule fillRule(void)
• QPainterPath intersected(QPainterPath)
• bool intersects(QRectF)
• bool isEmpty(void)
• qreal length(void)
• void lineTo(qreal x, qreal y)
• void moveTo(qreal x, qreal y)
• qreal percentAtLength(qreal len)
• QPointF pointAtPercent(qreal t)
• void quadTo(qreal cx, qreal cy, qreal endPointX, qreal endPointY)
• void setElementPositionAt(int index, qreal x, qreal y)
• void setFillRule(Qt::FillRule fillRule)
• QPainterPath simplified(void)
• qreal slopeAtPercent(qreal t)
• QPainterPath subtracted(QPainterPath)
• void swap(QPainterPath)
• QPolygonF toFillPolygon(QTransform)
• QPainterPath toReversed(void)
• void translate(qreal dx, qreal dy)
• QPainterPath translated(qreal dx, qreal dy)
• QPainterPath united(QPainterPath)
87.154 QPen Class
C++ Reference : http://doc.qt.io/qt-5/QPen.html
Parameters : void
• QBrush brush(void)
• int capStyle(void)
• QColor color(void)
• double dashOffset(void)
• bool isCosmetic(void)
• bool isSolid(void)
• int joinStyle(void)
• double miterLimit(void)
87.154. QPen Class 1105

8. Ring Documentation, Release 1.9
• void setBrush(QBrush)
• void setCapStyle(Qt::PenCapStyle style)
• void setColor(QColor)
• void setCosmetic(bool cosmetic)
• void setDashOffset(double offset)
• void setJoinStyle(Qt::PenJoinStyle style)
• void setMiterLimit(double limit)
• void setStyle(Qt::PenStyle style)
• void setWidth(int width)
• void setWidthF(double width)
• int style(void)
• void swap(QPen)
• int width(void)
• double widthF(void)
87.155 QPicture Class
C++ Reference : http://doc.qt.io/qt-5/QPicture.html
Parameters : void
• QRect boundingRect(void)
• const char *data(void)
• bool isNull(void)
• bool load(QString, const char *format) # In RingQt use : bool loadfile(QString, const char *format)
• bool play(QPainter *painter)
• bool save(QString , const char *format)
• void setBoundingRect(QRect)
• int size(void)
• void swap(QPicture)
87.156 QPixmap Class
C++ Reference : http://doc.qt.io/qt-5/QPixmap.html
Parameters : const char *
• QPixmap copy(int x, int y, int width, int height)
• QPixmap scaled(int width, int height, Qt::AspectRatioMode aspectRatioMode, Qt::TransformationMode trans-
formMode)
• int width(void)
87.155. QPicture Class 1106

9. Ring Documentation, Release 1.9
• int height(void)
• QBitmap createMaskFromColor(QColor , Qt::MaskMode)
• QBitmap mask(void)
• void setMask(QBitmap)
• void fill(QColor)
• QPixmap fromImage(QImage,Qt::ImageConversionFlags)
• bool load(QString, const char *, Qt::ImageConversionFlags )
• qint64 cacheKey(void)
• bool convertFromImage(QImage image, Qt::ImageConversionFlags flags)
• QPixmap copy_2(QRect rectangle)
• QBitmap createHeuristicMask(bool clipTight)
• int depth(void)
• void detach(void)
• qreal devicePixelRatio(void)
• bool hasAlpha(void)
• bool hasAlphaChannel(void)
• bool isNull(void)
• bool isQBitmap(void)
• bool loadFromData(uchar *data, uint len, char *format, Qt::ImageConversionFlags flags)
• bool loadFromData_2(QByteArray data, char *format, Qt::ImageConversionFlags flags)
• QRect rect(void)
• bool save(QString fileName, char *format, int quality)
• bool save_2(QIODevice *device, char *format, int quality)
• QPixmap scaled_2(QSize size, Qt::AspectRatioMode aspectRatioMode, Qt::TransformationMode transform-
Mode)
• QPixmap scaledToHeight(int height, Qt::TransformationMode mode)
• QPixmap scaledToWidth(int width, Qt::TransformationMode mode)
• void scroll(int dx, int dy, int x, int y, int width, int height, QRegion *exposed)
• void scroll_2(int dx, int dy, QRect rect, QRegion *exposed)
• void setDevicePixelRatio(qreal scaleFactor)
• QSize size(void)
• void swap(QPixmap other)
• QImage toImage(void)
• QPixmap transformed(QTransform transform, Qt::TransformationMode mode)
• QPixmap transformed_2(QMatrix matrix, Qt::TransformationMode mode)
• int defaultDepth(void)
87.156. QPixmap Class 1107

10. Ring Documentation, Release 1.9
• QPixmap fromImage_2(QImage image, Qt::ImageConversionFlags flags)
• QPixmap fromImageReader(QImageReader *imageReader, Qt::ImageConversionFlags flags)
• QTransform trueMatrix(QTransform matrix, int width, int height)
• QMatrix trueMatrix_2(QMatrix m, int w, int h)
87.157 QPixmap2 Class
C++ Reference : http://doc.qt.io/qt-5/QPixmap2.html
Parameters : int width, int height
Parent Class : QPixmap
87.158 QPlainTextEdit Class
C++ Reference : http://doc.qt.io/qt-5/QPlainTextEdit.html
Parameters : QWidget *
Parent Class : QAbstractScrollArea
• QString anchorAt(QPoint pos)
• bool backgroundVisible(void)
• int blockCount(void)
• bool canPaste(void)
• bool centerOnScroll(void)
• QMenu * createStandardContextMenu(void)
• QTextCharFormat currentCharFormat(void)
• QTextCursor cursorForPosition(QPoint pos)
• QRect cursorRect(QTextCursor cursor)
• QRect cursorRect_2(void)
• int cursorWidth(void)
• QTextDocument * document(void)
• QString documentTitle(void)
• void ensureCursorVisible(void)
• QList<QTextEdit::ExtraSelection> extraSelections(void)
• bool find(QString exp, QTextDocument::FindFlags options)
• bool isReadOnly(void)
• bool isUndoRedoEnabled(void)
• QPlainTextEdit::LineWrapMode lineWrapMode(void)
• int maximumBlockCount(void)
• void mergeCurrentCharFormat(QTextCharFormat modifier)
87.157. QPixmap2 Class 1108