Multimedia, Graphics and Printing

These classes provide support for graphics (2D, and with OpenGL, 3D), image encoding, decoding, and manipulation, sound, animation, printing etc.

See also this introduction to the Qt coordinate system.

QAbstractGraphicsShapeItem	Common base for all path items
QBitmap	Monochrome (1-bit depth) pixmaps
QBrush	Defines the fill pattern of shapes drawn by QPainter
QColor	Colors based on RGB, HSV or CMYK values
QColorDialog	Dialog widget for specifying colors
QColormap	Maps device independent QColors to device dependent pixel values
QConicalGradient	Used in combination with QBrush to specify a conical gradient brush
QDirectPainter	Direct access to the underlying hardware in Qt for Embedded Linux
QFont	Specifies a font used for drawing text
QFontDatabase	Information about the fonts available in the underlying window system
QFontInfo	General information about fonts
QFontMetrics	Font metrics information
QFontMetricsF	Font metrics information
QGL	Specifies miscellaneous identifiers used in the Qt OpenGL module
QGLColormap	Used for installing custom colormaps into QGLWidgets
QGLContext	Encapsulates an OpenGL rendering context
QGLFormat	Specifies the display format of an OpenGL rendering context
QGLFramebufferObject	Encapsulates an OpenGL framebuffer object
QGLPixelBuffer	Encapsulates an OpenGL pbuffer
QGLWidget	Widget for rendering OpenGL graphics
QGradient	Used in combination with QBrush to specify gradient fills
QGraphicsEllipseItem	Ellipse item that you can add to a QGraphicsScene
QGraphicsGridLayout	Grid layout for managing widgets in Graphics View
QGraphicsItem	The base class for all graphical items in a QGraphicsScene
QGraphicsItemAnimation	Simple animation support for QGraphicsItem
QGraphicsItemGroup	Treating a group of items as one
QGraphicsLayout	The base class for all layouts in Graphics View
QGraphicsLayoutItem	Can be inherited to allow your custom items to be managed by layouts
QGraphicsLineItem	Line item that you can add to a QGraphicsScene
QGraphicsLinearLayout	Horizontal or vertical layout for managing widgets in Graphics View
QGraphicsPathItem	Path item that you can add to a QGraphicsScene
QGraphicsPixmapItem	Pixmap item that you can add to a QGraphicsScene
QGraphicsPolygonItem	Polygon item that you can add to a QGraphicsScene
QGraphicsProxyWidget	Proxy layer for embedding a QWidget in a QGraphicsScene
QGraphicsRectItem	Rectangle item that you can add to a QGraphicsScene
QGraphicsScene	Surface for managing a large number of 2D graphical items
QGraphicsSceneContextMenuEvent	Context menu events in the graphics view framework
QGraphicsSceneDragDropEvent	Events for drag and drop in the graphics view framework
QGraphicsSceneEvent	Base class for all graphics view related events
QGraphicsSceneHelpEvent	Events when a tooltip is requested
QGraphicsSceneHoverEvent	Hover events in the graphics view framework
QGraphicsSceneMouseEvent	Mouse events in the graphics view framework
QGraphicsSceneMoveEvent	Events for widget moving in the graphics view framework
QGraphicsSceneResizeEvent	Events for widget resizing in the graphics view framework
QGraphicsSceneWheelEvent	Wheel events in the graphics view framework
QGraphicsSimpleTextItem	Simple text path item that you can add to a QGraphicsScene
QGraphicsSvgItem	QGraphicsItem that can be used to render the contents of SVG files
QGraphicsTextItem	Text item that you can add to a QGraphicsScene to display formatted text
QGraphicsView	Widget for displaying the contents of a QGraphicsScene
QGraphicsWidget	The base class for all widget items in a QGraphicsScene
QIcon	Scalable icons in different modes and states
QIconEngine	Abstract base class for QIcon renderers
QIconEngineV2	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
QLine	Two-dimensional vector using integer precision
QLineF	Two-dimensional vector using floating point precision
QLinearGradient	Used in combination with QBrush to specify a linear gradient brush
QMatrix	Specifies 2D transformations of a coordinate system
QMovie	Convenience class for playing movies with QImageReader
QPaintDevice	The base class of objects that can be painted
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
QPalette	Contains color groups for each widget state
QPen	Defines how a QPainter should draw lines and outlines of shapes
QPicture	Paint device that records and replays QPainter commands
QPictureIO	Contains parameters for loading and saving pictures
QPixmap	Off-screen image representation that can be used as a paint device
QPixmapCache	Application-wide cache for pixmaps
QPoint	Defines a point in the plane using integer precision
QPointF	Defines a point in the plane using floating point precision
QPolygon	Vector of points using integer precision
QPolygonF	Vector of points using floating point precision
QPrintEngine	Defines an interface for how QPrinter interacts with a given printing subsystem
QPrintPreviewWidget	Widget for previewing page layouts for printer output
QPrinter	Paint device that paints on a printer
QRadialGradient	Used in combination with QBrush to specify a radial gradient brush
QRect	Defines a rectangle in the plane using integer precision
QRectF	Defines a rectangle in the plane using floating point precision
QRegion	Specifies a clip region for a painter
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
QSound	Access to the platform audio facilities
QStyleOptionGraphicsItem	Used to describe the parameters needed to draw a QGraphicsItem
QStylePainter	Convenience class for drawing QStyle elements inside a widget
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
QTimeLine	Timeline for controlling animations
QTransform	Specifies 2D transformations of a coordinate system
Phonon::VideoWidget	Widget that is used to display video

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