Painting Classes

See also this introduction to the Qt coordinate system.

QLine	Two-dimensional vector using integer precision
QLineF	Two-dimensional vector using floating point precision
QMargins	Defines the four margins of a rectangle
QMarginsF	Defines the four margins of a rectangle
QPoint	Defines a point in the plane using integer precision
QPointF	Defines a point in the plane using floating point precision
QRect	Defines a rectangle in the plane using integer precision
QRectF	Defines a rectangle in the plane using floating point precision
QSize	Defines the size of a two-dimensional object using integer point precision
QSizeF	Defines the size of a two-dimensional object using floating point precision
QBitmap	Monochrome (1-bit depth) pixmaps
QIcon	Scalable icons in different modes and states
QIconEngine	Abstract base class for QIcon renderers
QImage	Hardware-independent image representation that allows direct access to the pixel data, and can be used as a paint device
QImageReader	Format independent interface for reading images from files or other devices
QImageWriter	Format independent interface for writing images to files or other devices
QPixmap	Off-screen image representation that can be used as a paint device
QGenericMatrix	Template class that represents a NxM transformation matrix with N columns and M rows
QVector2D	Represents a vector or vertex in 2D space
QBrush	Defines the fill pattern of shapes drawn by QPainter
QConicalGradient	Used in combination with QBrush to specify a conical gradient brush
QGradient	Used in combination with QBrush to specify gradient fills
QLinearGradient	Used in combination with QBrush to specify a linear gradient brush
QRadialGradient	Used in combination with QBrush to specify a radial gradient brush
QColor	Colors based on RGB, HSV or CMYK values
QPagedPaintDevice	Represents a paintdevice that supports multiple pages
QPaintDevice	The base class of objects that can be painted on with QPainter
QPaintEngine	Abstract definition of how QPainter draws to a given device on a given platform
QPainter	Performs low-level painting on widgets and other paint devices
QPainterPath	Container for painting operations, enabling graphical shapes to be constructed and reused
QPainterPathStroker	Used to generate fillable outlines for a given painter path
QPdfWriter	Class to generate PDFs that can be used as a paint device
QPen	Defines how a QPainter should draw lines and outlines of shapes
QPolygon	Vector of points using integer precision
QPolygonF	Vector of points using floating point precision
QRegion	Specifies a clip region for a painter
QRgba64	Struct contains a 64-bit RGB color
QTransform	Specifies 2D transformations of a coordinate system
QFont	Specifies a font used for drawing text
QFontMetrics	Font metrics information
QFontMetricsF	Font metrics information
QPlatformFontDatabase	Makes it possible to customize how fonts are discovered and how they are rendered
QSupportedWritingSystems	Used when registering fonts with the internal Qt fontdatabase
QStylePainter	Convenience class for drawing QStyle elements inside a widget
QColormap	Maps device independent QColors to device dependent pixel values
QSvgGenerator	Paint device that is used to create SVG drawings
QSvgRenderer	Used to draw the contents of SVG files onto paint devices
QSvgWidget	Widget that is used to display the contents of Scalable Vector Graphics (SVG) files

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Licensed under the GNU Free Documentation License, Version 1.3.
https://doc.qt.io/qt-5.9/painting.html