Defines an interface for how QPrinter interacts with a given printing subsystem. More...

Inherited by QPdfPrintEngine, QPreviewPaintEngine, QWin32PrintEngine

Public Types
enum	PrintEnginePropertyKey

Public Methods
virtual	~QPrintEngine ()

virtual bool	abort () = 0

virtual int	metric (QPaintDevice::PaintDeviceMetric id) const = 0

virtual bool	newPage () = 0

virtual QPrinter::PrinterState	printerState () const = 0

virtual QVariant	property (PrintEnginePropertyKey key) const = 0

virtual void	setProperty (PrintEnginePropertyKey key, const QVariant &value) = 0

Detailed Description

The QPrintEngine class defines an interface for how QPrinter interacts with a given printing subsystem. The common case when creating your own print engine is to derive from both QPaintEngine and QPrintEngine. Various properties of a print engine are given with property() and set with setProperty().

See also: QPaintEngine

Member Enumeration Documentation

enum QPrintEngine::PrintEnginePropertyKey

This enum is used to communicate properties between the print engine and QPrinter. A property may or may not be supported by a given print engine.

Constant	Value	Description
`QPrintEngine::PPK_CollateCopies`	`0`	A boolean value indicating whether the printout should be collated or not.
`QPrintEngine::PPK_ColorMode`	`1`	Refers to QPrinter::ColorMode, either color or monochrome.
`QPrintEngine::PPK_Creator`	`2`	A string describing the document's creator.
`QPrintEngine::PPK_Duplex`	`21`	A boolean value indicating whether both sides of the printer paper should be used for the printout.
`QPrintEngine::PPK_DocumentName`	`3`	A string describing the document name in the spooler.
`QPrintEngine::PPK_FontEmbedding`	`19`	A boolean value indicating whether data for the document's fonts should be embedded in the data sent to the printer.
`QPrintEngine::PPK_FullPage`	`4`	A boolean describing if the printer should be full page or not.
`QPrintEngine::PPK_NumberOfCopies`	`5`	Obsolete. An integer specifying the number of copies. Use PPK_CopyCount instead.
`QPrintEngine::PPK_Orientation`	`6`	Specifies a QPrinter::Orientation value.
`QPrintEngine::PPK_OutputFileName`	`7`	The output file name as a string. An empty file name indicates that the printer should not print to a file.
`QPrintEngine::PPK_PageOrder`	`8`	Specifies a QPrinter::PageOrder value.
`QPrintEngine::PPK_PageRect`	`9`	A QRect specifying the page rectangle
`QPrintEngine::PPK_PageSize`	`10`	Obsolete. Use PPK_PaperSize instead.
`QPrintEngine::PPK_PaperRect`	`11`	A QRect specifying the paper rectangle.
`QPrintEngine::PPK_PaperSource`	`12`	Specifies a QPrinter::PaperSource value.
`QPrintEngine::PPK_PaperSources`	`22`	Specifies more than one QPrinter::PaperSource value.
`QPrintEngine::PPK_PaperSize`	`PPK_PageSize`	Specifies a QPrinter::PaperSize value.
`QPrintEngine::PPK_PrinterName`	`13`	A string specifying the name of the printer.
`QPrintEngine::PPK_PrinterProgram`	`14`	A string specifying the name of the printer program used for printing,
`QPrintEngine::PPK_Resolution`	`15`	An integer describing the dots per inch for this printer.
`QPrintEngine::PPK_SelectionOption`	`16`
`QPrintEngine::PPK_SupportedResolutions`	`17`	A list of integer QVariant describing the set of supported resolutions that the printer has.
`QPrintEngine::PPK_SuppressSystemPrintStatus`	`20`	Suppress the built-in dialog for showing printing progress. As of 4.1 this only has effect on Mac OS X where, by default, a status dialog is shown.
`QPrintEngine::PPK_WindowsPageSize`	`18`	An integer specifying a DM_PAPER entry on Windows.
`QPrintEngine::PPK_CustomPaperSize`	`23`	A QSizeF specifying a custom paper size in the QPrinter::Point unit.
`QPrintEngine::PPK_PageMargins`	`24`	A QList<QVariant> containing the left, top, right and bottom margin values.
`QPrintEngine::PPK_CopyCount`	`25`	An integer specifying the number of copies to print.
`QPrintEngine::PPK_SupportsMultipleCopies`	`26`	A boolean value indicating whether or not the printer supports printing multiple copies in one job.
`QPrintEngine::PPK_CustomBase`	`0xff00`	Basis for extension.

Constructor & Destructor Documentation

QPrintEngine::~QPrintEngine ( )

inlinevirtual

Destroys the print engine.

Method Documentation

bool QPrintEngine::abort ( )

pure virtual

Instructs the print engine to abort the printing process. Returns true if successful, otherwise returns false.

int QPrintEngine::metric ( QPaintDevice::PaintDeviceMetric id ) const

pure virtual

Returns the metric for the given id.

bool QPrintEngine::newPage ( )

pure virtual

Instructs the print engine to start a new page. Returns true if the printer was able to create the new page, otherwise returns false.

QPrinter::PrinterState QPrintEngine::printerState ( ) const

pure virtual

Returns the current state of the printer being used by the print engine.

QVariant QPrintEngine::property ( PrintEnginePropertyKey key ) const

pure virtual

Returns the print engine's property specified by key.

See also: setProperty()

void QPrintEngine::setProperty	(	PrintEnginePropertyKey	key,
		const QVariant &	value
	)

pure virtual

Sets the print engine's property specified by key to the given value.

See also: property()

Public Types

Public Methods

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Method Documentation