KDReports::Report Class Reference

#include <KDReportsReport.h>

List of all members.

Public Member Functions
	Report (QObject *parent=0)
	~Report ()
void	setDefaultFont (const QFont &font)
void	addInlineElement (const Element &element)
void	addElement (const Element &element, Qt::AlignmentFlag horizontalAlignment=Qt::AlignLeft, const QColor &backgroundColor=QColor())
void	addVerticalSpacing (qreal space)
void	addFragment (const QTextDocumentFragment &fragment)
void	addPageBreak ()
void	setPageSize (const QPrinter::PageSize &size)
QPrinter::PageSize	pageSize () const
void	setOrientation (QPrinter::Orientation orientation)
QPrinter::Orientation	orientation () const
void	setWidthForEndlessPrinter (qreal widthMM)
void	setMargins (qreal top, qreal left, qreal bottom, qreal right)
void	getMargins (qreal *top, qreal *left, qreal *bottom, qreal *right) const
void	setHeaderBodySpacing (qreal spacing)
void	setFooterBodySpacing (qreal spacing)
Header &	header (HeaderLocations hl=AllPages)
Footer &	footer (HeaderLocations hl=AllPages)
void	associateModel (const QString &modelKey, QAbstractItemModel *model)
void	associateTextValue (const QString &id, const QString &value)
void	associateImageValue (const QString &id, const QPixmap &value)
bool	loadFromXML (QIODevice *iodevice, ErrorDetails *details=0)
bool	loadFromXML (const QDomDocument &doc, ErrorDetails *details=0)
void	setXmlElementHandler (KDReports::XmlElementHandler *handler)
bool	printWithDialog (QWidget *parent)
bool	print (QPrinter *printer, QWidget *parent=0)
bool	exportToFile (const QString &fileName, QWidget *parent=0)
bool	exportToImage (const QSize &size, const QString &fileName, const char *format)
bool	exportToHtml (const QString &fileName)
void	paintPage (int pageNumber, QPainter &painter)
int	numberOfPages () const
void	setTableBreakingEnabled (bool tableBreakingEnabled)
	Enable breaking of tables across multiple pages.
bool	isTableBreakingEnabled () const
void	setTableBreakingPageOrder (TableBreakingPageOrder pageOrder)
TableBreakingPageOrder	tableBreakingPageOrder () const
void	setFontScalingFactor (qreal factor)
	Scale the fonts in the document by a given factor.
qreal	fontScalingFactor () const
void	scaleTo (int numPagesHorizontally, int numPagesVertically)
	Ensure that the report fits into a number of pages.
int	maximumNumberOfPagesForHorizontalScaling () const
int	maximumNumberOfPagesForVerticalScaling () const
QList < KDReports::AutoTableElement * >	autoTableElements () const
void	regenerateAutoTables ()
void	regenerateAutoTableForModel (QAbstractItemModel *model)
void	setWatermarkText (const QString &text, int rotation=0, const QColor &color=QColor(204, 204, 204), const QFont &font=QFont(QLatin1String("Helvetica"), 48))
QString	watermarkText () const
int	watermarkRotation () const
QColor	watermarkColor () const
QFont	watermarkFont () const
void	setWatermarkPixmap (const QPixmap &pixmap, bool autoGrayOut=true)
QPixmap	watermarkPixmap () const
void	setWatermarkImage (const QImage &image)
QImage	watermarkImage () const

---

Detailed Description

The Report class represents a report.

Initially the report is empty. Content can be added to the report using the addElement API, or using loadFromXML to load an equivalent definition from an XML file.

The report can then be previewed with PreviewDialog, printed, exported to PDF, or exported to an image.

---

Constructor & Destructor Documentation

KDReports::Report::Report

(

QObject *

parent = 0

)

Constructs a report.

Parameters:

parent

optional parent object, for memory management

KDReports::Report::~Report

(

)

Destroys the report.

---

Member Function Documentation

void KDReports::Report::addElement	(	const Element &	element,
		Qt::AlignmentFlag	horizontalAlignment = Qt::AlignLeft,
		const QColor &	backgroundColor = QColor()
	)

Adds an element to the report, creating a new paragraph for it. You can specify the alignment of that paragraph.

An element defines what is added to the report. The report does not store the element, though. For this reason, any changes to the element after insertion will have no effect on the report. Set all settings in the element before calling addElement.

Parameters:

	element	the definition of what to add to the report
	horizontalAlignment	the alignment of the paragraph created for this element
	backgroundColor	the background color of the paragraph created for this element The difference with Element::setBackground is that it affects the whole paragraph, including any inline elements as well as the unused area up to the right margin of the page.

void KDReports::Report::addFragment

(

const QTextDocumentFragment &

fragment

)

Adds a piece of formatted text from a QTextDocument. This method is an optimization for the case where the initial text is in a QTextDocument (e.g. in a QTextEdit). In general you probably want to use addElement(HtmlElement()) instead.

void KDReports::Report::addInlineElement

(

const Element &

element

)

Adds an element to the report, next to the previous element, in the same paragraph.

An element defines what is added to the report. The report does not store the element, though. For this reason, any changes to the element after insertion will have no effect on the report. Set all settings in the element before calling addInlineElement.

void KDReports::Report::addPageBreak

(

)

Adds a page break to the report. The next element added to the report will be at the top of a page.

Note that you cannot call addPageBreak twice in a row, it will only insert one page break. To get a completely empty page you need to insert an empty text element between both calls to addPageBreak.

void KDReports::Report::addVerticalSpacing

(

qreal

space

)

Adds vertical spacing between paragraphs. Make sure to call addElement after that, not addInlineElement.

Parameters:

space

the space in millimeters

void KDReports::Report::associateImageValue	(	const QString &	id,
		const QPixmap &	value
	)

Associate a pixmap with the id of an image element. This is only used if the report description is going to be loaded from an XML file, using loadFromXML. This method needs to be called before loadFromXML is called.

Parameters:

	id	the id of the image element, specified using id="foo" in the XML.
	value	the pixmap to use in the report. If associateImageValue was already called with the id id, the new value replaces the old one.

void KDReports::Report::associateModel	(	const QString &	modelKey,
		QAbstractItemModel *	model
	)

Associates a model with a model key. This is only used if the report description is going to be loaded from an XML file, using loadFromXML. This method needs to be called before loadFromXML is called.

void KDReports::Report::associateTextValue	(	const QString &	id,
		const QString &	value
	)

Associate a text string with the id of a text or html element. This is only used if the report description is going to be loaded from an XML file, using loadFromXML. This method needs to be called before loadFromXML is called.

Parameters:

	id	the id of the text or html element, specified using id="foo" in the XML.
	value	the text for this element, which will appear in the report. The value can include newlines. If associateTextValue was already called with the id id, the new value replaces the old one.

QList<KDReports::AutoTableElement *> KDReports::Report::autoTableElements

(

)

const

Returns a list of the auto-table elements that were used to create this report. You wouldn't normally need this method; this is only to be able to change some settings like showing table headers or table borders at runtime.

Since:

1.1

bool KDReports::Report::exportToFile	(	const QString &	fileName,
		QWidget *	parent = 0
	)

Export the whole report to a PS or PDF file. If the file name has the suffix ".ps" then PostScript is automatically selected as output format. If the file name has the ".pdf" suffix PDF is generated.

bool KDReports::Report::exportToHtml

(

const QString &

fileName

)

Export the whole report to HTML. Note that HTML export does not include headers and footers, nor watermark.

Images are saved into separate files.

Since:

1.2

bool KDReports::Report::exportToImage	(	const QSize &	size,
		const QString &	fileName,
		const char *	format
	)

Export the whole report to an image file.

Parameters:

	size	size of the image in pixels
	fileName	the name of the image file
	format	format of the image, for instance: BMP, JPG, PNG.

qreal KDReports::Report::fontScalingFactor

(

)

const

Returns:

the font scaling factor given to setFontScalingFactor

Since:

1.1

Footer& KDReports::Report::footer

(

HeaderLocations

hl = AllPages

)

Returns:

a reference to the footer object. Calling this method makes the report have a footer on the specified pages. See header() for caveats.

Specify the contents of the footer by calling Footer::addElement.

void KDReports::Report::getMargins	(	qreal *	top,
		qreal *	left,
		qreal *	bottom,
		qreal *	right
	)			const

Returns:

the page margins in mm.

Since:

1.1

Header& KDReports::Report::header

(

HeaderLocations

hl = AllPages

)

Returns a reference to a header object. Calling this method makes the report have a header on the specified pages.

Calling the method with different sets of intersecting flags leads to undefined behavior. For instance header(EvenPages|FirstPage) and header(OddPages) is fine, but header(EvenPages|FirstPage) and header(FirstPage) leads to two headers being defined for the first page, anyone of the two could be picked. Calling the method with the same set multiple times, for instance header(EvenPages|FirstPage), is ok though: the same header instance will be returned every time.

Note that all headers will occupy the same height: the height of the tallest header.

Specify the contents of the header by calling Header::addElement.

bool KDReports::Report::isTableBreakingEnabled

(

)

const

Returns:

the value passed to setTableBreakingEnabled, also true when scaleTo was called with numPagesHorizontally > 0

bool KDReports::Report::loadFromXML	(	QIODevice *	iodevice,
		ErrorDetails *	details = 0
	)

Loads a report definition from an XML document. Notice that if the report definition contains Chart or Table elements, you need to call associate for each such element. iodevice needs to be open and readable. If you have any chart or table elements in your report, you must associate the models using associateModel() first, otherwise these elements will stay empty.

Returns:

true if the XML document was succesfully loaded, false otherwise

bool KDReports::Report::loadFromXML	(	const QDomDocument &	doc,
		ErrorDetails *	details = 0
	)

This is an overloaded member function, provided for convenience. With this method you can modify the QDomDocument before giving it to KDReports.

Note: if the QDomDocument is simply created with a file or QIODevice as argument, it will ignore whitespace-only nodes like <text> </text>. The other loadFromXML takes care of this, while this overload requires that the QDomDocument has been properly set up.

Returns:

true if the XML document was succesfully loaded, false otherwise

Since:

1.1

int KDReports::Report::maximumNumberOfPagesForHorizontalScaling

(

)

const

Returns:

the number of horizontal pages set with scaleTo, otherwise 1.

Since:

1.1

int KDReports::Report::maximumNumberOfPagesForVerticalScaling

(

)

const

Returns:

the number of vertical pages set with scaleTo, otherwise 0.

Since:

1.1

int KDReports::Report::numberOfPages

(

)

const

Returns:

the report's number of pages (with the current page size).

QPrinter::Orientation KDReports::Report::orientation

(

)

const

Returns:

the orientation set by setOrientation. The default orientation is QPrinter::Portrait.

QPrinter::PageSize KDReports::Report::pageSize

(

)

const

Returns:

the page size set by setPageSize. The default page size is A4.

void KDReports::Report::paintPage	(	int	pageNumber,
		QPainter &	painter
	)

Paints a given page of the report into the painter. Note that this method can be used for printing and for on-screen rendering so it doesn't fill the background with white, the caller has do to that.

bool KDReports::Report::print	(	QPrinter *	printer,
		QWidget *	parent = 0
	)

Print directly using the setup values from a preexisting QPrinter object. Notice that this will only change settings like page sizes or orientation temporarily, during this particular print operation. After the operation, these values will be reset to their previous values.

Returns false if cancelled (not possible yet).

Parameters:

parent

the parent widget for the progress dialog that appears when printing

bool KDReports::Report::printWithDialog

(

QWidget *

parent

)

Show the print dialog to let the user choose a printer, and print.

Parameters:

parent

the parent widget for the progress dialog that appears when printing

Returns:

false if the print dialog was cancelled

void KDReports::Report::regenerateAutoTableForModel

(

QAbstractItemModel *

model

)

Regenerate the contents of a single auto table. This can be useful if the data in this specific model changes frequently, to save time compared to recreating the full report.

Since:

1.2

void KDReports::Report::regenerateAutoTables

(

)

Regenerate the contents of auto tables. This can be useful if the data in the item model changes frequently, to save time compared to recreating the full report. It's also used by the Table Breaking dialog to show/hide headers dynamically.

Since:

1.1

void KDReports::Report::scaleTo	(	int	numPagesHorizontally,
		int	numPagesVertically
	)

Ensure that the report fits into a number of pages.

By default tables are layouted so that all columns fit into the page width, but for large tables this can wrap the text too much. This method allows to scale the report so that it fits into a number of pages horizontally and vertically. For instance, 3 pages horizontally means that tables columns can span over 3 pages, arranged side by side. This is a maximum number of pages; if the table is really small it will still occupy only a single page.

Scaling also means that the font sizes can be reduced (similar to what setFontScalingFactor does) so that the report fits into the number of pages specified by this method.

NOTE: this is mutually exclusive with setTableBreakingEnabled.

Parameters:

	numPagesHorizontally	number of pages in the horizontal direction, 1 for no table breaking in the horizontal direction.
	numPagesVertically	number of pages in the vertical direction, 0 for no limit

Since:

1.1

void KDReports::Report::setDefaultFont

(

const QFont &

font

)

Sets the default font used for text in this report.

Since:

1.1

void KDReports::Report::setFontScalingFactor

(

qreal

factor

)

Scale the fonts in the document by a given factor.

Scale all the fonts used in the main part of the report (not headers and footers) by the given amount. Therefore setFontScalingFactor(1.0) is a no-op.

Since:

1.1

void KDReports::Report::setFooterBodySpacing

(

qreal

spacing

)

Sets the margin between the footer and the body of the report, in mm. This margin is 0 by default, i.e. the footer starts immediately under the body.

Since:

1.1

void KDReports::Report::setHeaderBodySpacing

(

qreal

spacing

)

Sets the margin between the header and the body of the report, in mm. This margin is 0 by default, i.e. the body starts immediately under the header.

Since:

1.1

void KDReports::Report::setMargins	(	qreal	top,
		qreal	left,
		qreal	bottom,
		qreal	right
	)

Sets the page margins in mm. The default margins are 20 mm.

void KDReports::Report::setOrientation

(

QPrinter::Orientation

orientation

)

Sets the orientation, QPrinter::Portrait or QPrinter::Landscape.

void KDReports::Report::setPageSize

(

const QPrinter::PageSize &

size

)

Set the list of tabs (tabulations) to use when adding block elements. Those tabs will be set for any block element that is added from now on, until calling this method again.

This method allows to align numbers based on their decimal separator, for instance. Example:

     QList<QTextOption::Tab> tabs;
     QTextOption::Tab tab;
     tab.position = 50; // in mm
     tab.type = QTextOption::DelimiterTab;
     tab.delimiter = QLatin1Char( '.' );
     tabs.append( tab );
     report.setTabPositions( tabs );

     Then insert text using a tab, like TextElement("\t123.456").

This feature requires Qt 4.4 or newer.

Since:

1.2 Sets the page size of the report. Example: setPageSize(QPrinter::A4) or setPageSize(QPrinter::Letter); Note that for performance reasons, it is recommended to do this after adding all the elements to the report rather than before.

void KDReports::Report::setTableBreakingEnabled

(

bool

tableBreakingEnabled

)

Enable breaking of tables across multiple pages.

By default tables are layouted so that all columns fit into the page width, but for large tables this can wrap the text too much. Table breaking ensures that no wrapping occurs in table cells, the tables span over as many pages as needed horizontally.

Table breaking works best for the case where the document consists of a single table. Otherwise, text after the table might still be after the end of the table, i.e. not where expected.

Calling setTableBreakingEnabled(true) is logically equivalent to calling scaleTo(infinity, 0), i.e. enabling table breaking without a limit on the number of pages.

NOTE: this is mutually exclusive with scaleTo, since scaleTo enables table breaking as well, but with different parameters.

Since:

1.1

void KDReports::Report::setTableBreakingPageOrder

(

TableBreakingPageOrder

pageOrder

)

Sets the page order to use when breaking tables. When a table is bigger than the page in both directions, horizontally and vertically, then the table breaking can be done in two ways: either the table goes "down then right", i.e. all rows appear first, for the first few columns, and then other columns are printed, or it goes "right then down", i.e. all columns appear first, for the number of rows that fit into one page, and then the bottom part of the table is printed.

The default page order is DownThenRight.

Since:

1.1

void KDReports::Report::setWatermarkImage

(

const QImage &

image

)

Same as setWatermarkPixmap but with a QImage. Especially useful in threads.

Since:

1.2

void KDReports::Report::setWatermarkPixmap	(	const QPixmap &	pixmap,
		bool	autoGrayOut = true
	)

Sets the pixmap to be used as a watermark. By default, the image will be "grayed out" much like QIcon does for disabled pixmaps. If you do not want this behavior, set autoGrayOut to false. However, you need to ensure then that the image does prevent the legibility of the report. The pixmap will not be scaled, it will be centered on the page. You can set both a watermark text and a watermark image, but the two will overwrite each other so this is not recommended.

void KDReports::Report::setWatermarkText	(	const QString &	text,
		int	rotation = 0,
		const QColor &	color = QColor(204, 204, 204),
		const QFont &	font = QFont(QLatin1String("Helvetica"), 48)
	)

Sets the text to be used as a watermark. By default, the text will be displayed with 0 degrees rotation, in a light gray, in a 48pt Helvetica font, centered on the page. You can set both a watermark text and a watermark image, but the two will overwrite each other so this is not recommended. Also notice that if you choose a watermark color that is too dark, this will make the reports less legible.

void KDReports::Report::setWidthForEndlessPrinter

(

qreal

widthMM

)

Set a custom page size for an endless printer. The page width is known, the document is laid out without pagination within that width. The page height is set automatically so that the entire document fits within one page.

When calling setWidthForEndlessPrinter you don't have to call setPageSize or setOrientation.

Call setWidthForEndlessPrinter(0) to reset to normal (pagesize-dependent) behavior.

NOTE: with Qt-4.3, this feature only works reliably on Unix, using Qt compiled with CUPS support. With Qt-4.4, there is no such limitation and this feature should work everywhere.

void KDReports::Report::setXmlElementHandler

(

KDReports::XmlElementHandler *

handler

)

Sets an xml element handler. The report does not take ownership of the xml element handler.

If you want it to be deleted with the report, derive from both QObject and XmlElementHandler and give the report as parent QObject.

Since:

1.2

TableBreakingPageOrder KDReports::Report::tableBreakingPageOrder

(

)

const

Returns:

the table breaking page order given to setTableBreakingPageOrder

Since:

1.1

QColor KDReports::Report::watermarkColor

(

)

const

Returns:

the watermark text color.

QFont KDReports::Report::watermarkFont

(

)

const

Returns:

the watermark text font.

QImage KDReports::Report::watermarkImage

(

)

const

Returns:

the image to be used as watermark.

Since:

1.2

QPixmap KDReports::Report::watermarkPixmap

(

)

const

Returns:

the image to be used as watermark. If autoGrayOut was used when calling setWatermarkPixmap, this is not the same pixmap as was passed to setWatermarkPixmap.

int KDReports::Report::watermarkRotation

(

)

const

Returns:

the watermark text rotation.

QString KDReports::Report::watermarkText

(

)

const

Returns:

the watermark text.

---

The documentation for this class was generated from the following file:

• src/KDReportsReport.h