Class: QgsLayoutPageCollection

class qgis.core.QgsLayoutPageCollection(layout: QgsLayout)

Bases: PyQt5.QtCore.QObject, qgis._core.QgsLayoutSerializableObject

Constructor for QgsLayoutItemPage, with the specified parent layout.

A manager for a collection of pages in a layout.

New in version 3.0: Enums

Methods

addPage Adds a page to the collection.
beginPageSizeChange Should be called before changing any page item sizes, and followed by a call to endPageSizeChange().
childEvent
clear Removes all pages from the collection.
connectNotify
customEvent
deletePage Deletes a page from the collection.
disconnectNotify
endPageSizeChange Should be called after changing any page item sizes, and preceded by a call to beginPageSizeChange().
extendByNewPage Adds a new page to the end of the collection.
guides Returns a reference to the collection’s guide collection, which manages page snap guides.
hasUniformPageSizes Returns True if the layout has uniform page sizes, e.g.
insertPage Inserts a page into a specific position in the collection.
isSignalConnected
itemsOnPage Returns a list of layout items on the specified page index.
layout
maximumPageSize Returns the maximum size of any page in the collection, by area.
maximumPageWidth Returns the maximum width of pages in the collection.
page Returns a specific page (by pageNumber) from the collection.
pageAtPoint Returns the page at a specified point (in layout coordinates).
pageCount Returns the number of pages in the collection.
pageIsEmpty Returns whether a given page index is empty, ie, it contains no items except for the background paper item.
pageNumber Returns the page number for the specified page, or -1 if the page is not contained in the collection.
pageNumberForPoint Returns the page number corresponding to a point in the layout (in layout units).
pagePositionToAbsolute Converts a position on a page to an absolute position in (maintaining the units from the input position).
pagePositionToLayoutPosition Converts a position on a page to an absolute position in layout coordinates.
pageShadowWidth Returns the size of the page shadow, in layout units.
pageStyleSymbol Returns the symbol to use for drawing pages in the collection.
pages Returns a list of pages in the collection.
positionOnPage Returns the position within a page of a point in the layout (in layout units).
predictPageNumberForPoint Returns the theoretical page number corresponding to a point in the layout (in layout units), assuming that enough pages exist in the layout to cover that point.
readXml Sets the collection’s state from a DOM element.
receivers
redraw Triggers a redraw for all pages.
reflow Forces the page collection to reflow the arrangement of pages, e.g.
resizeToContents Resizes the layout to a single page which fits the current contents of the layout.
sender
senderSignalIndex
setPageStyleSymbol Sets the symbol to use for drawing pages in the collection.
shouldExportPage Returns whether the specified page number should be included in exports of the layouts.
spaceBetweenPages Returns the space between pages, in layout units.
stringType
takePage Takes a page from the collection, returning ownership of the page to the caller.
timerEvent
visiblePageNumbers Returns a list of the page numbers which are visible within the specified region (in layout coordinates).
visiblePages Returns a list of the pages which are visible within the specified region (in layout coordinates).
writeXml Stores the collection’s state in a DOM element.

Signals

changed Emitted when pages are added or removed from the collection.
pageAboutToBeRemoved Emitted just before a page is removed from the collection.

Attributes

addPage(self, page: QgsLayoutItemPage)

Adds a page to the collection. Ownership of the page is transferred to the collection, and the page will automatically be added to the collection’s layout() (there is no need to manually add the page item to the layout). The page will be added after all pages currently contained in the collection.

Calling addPage() automatically triggers a reflow() of pages.

See also

insertPage()

beginPageSizeChange(self)

Should be called before changing any page item sizes, and followed by a call to endPageSizeChange(). If page size changes are wrapped in these calls, then items will maintain their same relative position on pages after the page sizes are updated.

changed

Emitted when pages are added or removed from the collection. [signal]

childEvent()
clear(self)

Removes all pages from the collection.

See also

deletePage()

connectNotify()
customEvent()
deletePage(self, pageNumber: int)

Deletes a page from the collection. The page will automatically be removed from the collection’s layout().

Page numbers in collections begin at 0 - so a pageNumber of 0 will delete the first page in the collection.

Calling deletePage() automatically triggers a reflow() of pages.

See also

clear()

deletePage(self, page: QgsLayoutItemPage) Deletes a page from the collection. The page will automatically be removed from the collection’s layout().

Calling deletePage() automatically triggers a reflow() of pages.

See also

clear()

disconnectNotify()
endPageSizeChange(self)

Should be called after changing any page item sizes, and preceded by a call to beginPageSizeChange(). If page size changes are wrapped in these calls, then items will maintain their same relative position on pages after the page sizes are updated.

extendByNewPage(self) → QgsLayoutItemPage

Adds a new page to the end of the collection. This page will inherit the same size as the current final page in the collection.

The newly created page will be returned.

See also

addPage()

See also

insertPage()

guides(self) → QgsLayoutGuideCollection

Returns a reference to the collection’s guide collection, which manages page snap guides.

hasUniformPageSizes(self) → bool

Returns True if the layout has uniform page sizes, e.g. all pages are the same size.

This method does not consider differing units as non-uniform sizes, only the actual physical size of the pages.

insertPage(self, page: QgsLayoutItemPage, beforePage: int)

Inserts a page into a specific position in the collection.

Ownership of the page is transferred to the collection, and the page will automatically be added to the collection’s layout() (there is no need to manually add the page item to the layout).

The page will be added after before the page number specified by beforePage. (Page numbers in collections begin at 0 - so a beforePage of 0 will insert the page before all existing pages).

Calling insertPage() automatically triggers a reflow() of pages.

See also

addPage()

isSignalConnected()
itemsOnPage(self, page: int) → List[QgsLayoutItem]

Returns a list of layout items on the specified page index.

layout(self) → QgsLayout
maximumPageSize(self) → QSizeF

Returns the maximum size of any page in the collection, by area. The returned value is in layout units.

maximumPageWidth(self) → float

Returns the maximum width of pages in the collection. The returned value is in layout units.

page(self, pageNumber: int) → QgsLayoutItemPage

Returns a specific page (by pageNumber) from the collection. Internal page numbering starts at 0 - so a pageNumber of 0 corresponds to the first page in the collection. A None is returned if an invalid page number is specified.

See also

pages()

pageAboutToBeRemoved

Emitted just before a page is removed from the collection.

Page numbers in collections begin at 0 - so a page number of 0 indicates the first page. [signal]

pageAtPoint(self, point: Union[QPointF, QPoint]) → QgsLayoutItemPage

Returns the page at a specified point (in layout coordinates).

If no page exists at point, None will be returned.

Note

Unlike pageNumberForPoint(), this method only returns pages which directly intersect with the specified point.

pageCount(self) → int

Returns the number of pages in the collection.

See also

pages()

pageIsEmpty(self, page: int) → bool

Returns whether a given page index is empty, ie, it contains no items except for the background paper item.

pageNumber(self, page: QgsLayoutItemPage) → int

Returns the page number for the specified page, or -1 if the page is not contained in the collection.

pageNumberForPoint(self, point: Union[QPointF, QPoint]) → int

Returns the page number corresponding to a point in the layout (in layout units).

Page numbers in collections begin at 0 - so a page number of 0 indicates the first page.

Note

This is a relaxed check, which will always return a page number. For instance, it does not consider x coordinates and vertical coordinates before the first page or after the last page will still return the nearest page.

See also

pageAtPoint()

See also

positionOnPage()

pagePositionToAbsolute(self, page: int, position: QgsLayoutPoint) → QgsLayoutPoint

Converts a position on a page to an absolute position in (maintaining the units from the input position).

pagePositionToLayoutPosition(self, page: int, position: QgsLayoutPoint) → QPointF

Converts a position on a page to an absolute position in layout coordinates.

pageShadowWidth(self) → float

Returns the size of the page shadow, in layout units.

pageStyleSymbol(self) → QgsFillSymbol

Returns the symbol to use for drawing pages in the collection.

pages(self) → object

Returns a list of pages in the collection.

See also

page()

See also

pageCount()

positionOnPage(self, point: Union[QPointF, QPoint]) → QPointF

Returns the position within a page of a point in the layout (in layout units).

predictPageNumberForPoint(self, point: Union[QPointF, QPoint]) → int

Returns the theoretical page number corresponding to a point in the layout (in layout units), assuming that enough pages exist in the layout to cover that point.

If there are insufficient pages currently in the layout, this method will assume that extra “imaginary” pages have been added at the end of the layout until that point is reached. These imaginary pages will inherit the size of the existing final page in the layout.

Page numbers in collections begin at 0 - so a page number of 0 indicates the first page.

See also

pageAtPoint()

See also

positionOnPage()

readXml(self, collectionElement: QDomElement, document: QDomDocument, context: QgsReadWriteContext) → bool

Sets the collection’s state from a DOM element. collectionElement is the DOM node corresponding to the collection.

See also

writeXml()

receivers()
redraw(self)

Triggers a redraw for all pages.

reflow(self)

Forces the page collection to reflow the arrangement of pages, e.g. to account for page size/orientation change.

resizeToContents(self, margins: QgsMargins, marginUnits: QgsUnitTypes.LayoutUnit)

Resizes the layout to a single page which fits the current contents of the layout.

Calling this method resets the number of pages to 1, with the size set to the minimum size required to fit all existing layout items. Items will also be repositioned so that the new top-left bounds of the layout is at the point (marginLeft, marginTop). An optional margin can be specified.

sender()
senderSignalIndex()
setPageStyleSymbol(self, symbol: QgsFillSymbol)

Sets the symbol to use for drawing pages in the collection.

Ownership is not transferred, and a copy of the symbol is created internally.

shouldExportPage(self, page: int) → bool

Returns whether the specified page number should be included in exports of the layouts.

Warning

This will always return True unless the layout is being currently exported – it cannot be used in advance to determine whether a given page will be exported!

See also

pageIsEmpty()

spaceBetweenPages(self) → float

Returns the space between pages, in layout units.

stringType(self) → str
takePage(self, page: QgsLayoutItemPage) → QgsLayoutItemPage

Takes a page from the collection, returning ownership of the page to the caller.

timerEvent()
visiblePageNumbers(self, region: QRectF) → List[int]

Returns a list of the page numbers which are visible within the specified region (in layout coordinates).

See also

visiblePages()

visiblePages(self, region: QRectF) → List[QgsLayoutItemPage]

Returns a list of the pages which are visible within the specified region (in layout coordinates).

writeXml(self, parentElement: QDomElement, document: QDomDocument, context: QgsReadWriteContext) → bool

Stores the collection’s state in a DOM element. The parentElement should refer to the parent layout’s DOM element.

See also

readXml()