A collection of map items which are drawn above the map content in a QgsComposerMap. More...

#include <qgscomposermapitem.h>

Inheritance diagram for QgsComposerMapItemStack:

Public Member Functions
	QgsComposerMapItemStack (QgsComposerMap *map)
	Constructor for QgsComposerMapItemStack.
virtual	~QgsComposerMapItemStack ()
int	size () const
	Returns the number of items in the stack.
virtual bool	writeXML (QDomElement &elem, QDomDocument &doc) const
	Stores the state of the item stack in a DOM node.
virtual bool	readXML (const QDomElement &elem, const QDomDocument &doc)=0
	Sets the item stack's state from a DOM document.
void	drawItems (QPainter *painter)
	Draws the items from the stack on a specified painter.
bool	containsAdvancedEffects () const
	Returns whether any items within the stack contain advanced effects, such as blending modes.

Protected Member Functions
void	addItem (QgsComposerMapItem *item)
	Adds a new map item to the stack and takes ownership of the item.
void	removeItem (const QString &itemId)
	Removes an item from the stack and deletes the corresponding QgsComposerMapItem.
void	moveItemUp (const QString &itemId)
	Moves an item up the stack, causing it to be rendered above other items.
void	moveItemDown (const QString &itemId)
	Moves an item up the stack, causing it to be rendered above other items.
const QgsComposerMapItem *	constItem (const QString &itemId) const
	Returns a const reference to an item within the stack.
QgsComposerMapItem *	item (const QString &itemId) const
	Returns a reference to an item within the stack.
QgsComposerMapItem *	item (const int index) const
	Returns a reference to an item within the stack.
QgsComposerMapItem &	operator[] (int idx)
	Returns a reference to an item within the stack.
QList< QgsComposerMapItem * >	asList () const
	Returns a list of QgsComposerMapItems contained by the stack.
void	removeItems ()
	Clears the item stack and deletes all QgsComposerMapItems contained by the stack.

Protected Attributes
QList< QgsComposerMapItem * >	mItems
QgsComposerMap *	mComposerMap

Detailed Description

A collection of map items which are drawn above the map content in a QgsComposerMap.

The item stack controls which items are drawn and the order they are drawn in.

Note: added in QGIS 2.5

See Also: QgsComposerMapItem

Constructor & Destructor Documentation

QgsComposerMapItemStack::QgsComposerMapItemStack ( QgsComposerMap * map )

Constructor for QgsComposerMapItemStack.

Parameters

map	QgsComposerMap the item stack is attached to

QgsComposerMapItemStack::~QgsComposerMapItemStack ( )

virtual

Member Function Documentation

void QgsComposerMapItemStack::addItem ( QgsComposerMapItem * item )

protected

Adds a new map item to the stack and takes ownership of the item.

The item will be added to the end of the stack, and rendered above any existing map items already present in the stack.

Parameters

item	QgsComposerMapItem to add to the stack

Note: after adding an item to the stack update() should be called for the QgsComposerMap to prevent rendering artifacts

See Also: removeItem

QList< QgsComposerMapItem * > QgsComposerMapItemStack::asList ( ) const

protected

Returns a list of QgsComposerMapItems contained by the stack.

Returns: list of items

Reimplemented in QgsComposerMapGridStack, and QgsComposerMapOverviewStack.

const QgsComposerMapItem * QgsComposerMapItemStack::constItem ( const QString & itemId ) const

protected

Returns a const reference to an item within the stack.

Parameters

itemId id for the QgsComposerMapItem to find

Returns: const reference to item, if found

See Also: item

bool QgsComposerMapItemStack::containsAdvancedEffects ( ) const

Returns whether any items within the stack contain advanced effects, such as blending modes.

Returns: true if item stack contains advanced effects

void QgsComposerMapItemStack::drawItems ( QPainter * painter )

Draws the items from the stack on a specified painter.

Parameters

painter destination QPainter

QgsComposerMapItem * QgsComposerMapItemStack::item ( const QString & itemId ) const

protected

Returns a reference to an item within the stack.

Parameters

itemId id for the QgsComposerMapItem to find

Returns: reference to item if found

See Also: constItem

QgsComposerMapItem * QgsComposerMapItemStack::item ( const int index ) const

protected

Returns a reference to an item within the stack.

Parameters

index item position in the stack

Returns: reference to item if found

See Also: constItem

void QgsComposerMapItemStack::moveItemDown ( const QString & itemId )

protected

Moves an item up the stack, causing it to be rendered above other items.

Parameters

itemId id for the QgsComposerMapItem to move down

Note: after moving an item within the stack, update() should be called for the QgsComposerMap to redraw the map with the new item stack order

See Also: moveItemUp

void QgsComposerMapItemStack::moveItemUp ( const QString & itemId )

protected

Moves an item up the stack, causing it to be rendered above other items.

Parameters

itemId id for the QgsComposerMapItem to move up

Note: after moving an item within the stack, update() should be called for the QgsComposerMap to redraw the map with the new item stack order

See Also: moveItemDown

QgsComposerMapItem & QgsComposerMapItemStack::operator[] ( int idx )

protected

Returns a reference to an item within the stack.

Parameters

idx	item position in the stack

Returns: reference to item if found

See Also: constItem; item

Note: not available in python bindings

Reimplemented in QgsComposerMapGridStack, and QgsComposerMapOverviewStack.

virtual bool QgsComposerMapItemStack::readXML	(	const QDomElement &	elem,
		const QDomDocument &	doc
	)

pure virtual

Sets the item stack's state from a DOM document.

Parameters

elem	is DOM node corresponding to 'a ComposerMap' tag
doc	DOM document

Returns: true if read was successful

See Also: writeXML

Implemented in QgsComposerMapGridStack, and QgsComposerMapOverviewStack.

void QgsComposerMapItemStack::removeItem ( const QString & itemId )

protected

Removes an item from the stack and deletes the corresponding QgsComposerMapItem.

Parameters

itemId id for the QgsComposerMapItem to remove

Note: after removing an item from the stack, update() should be called for the QgsComposerMap to prevent rendering artifacts

See Also: addItem

void QgsComposerMapItemStack::removeItems ( )

protected

Clears the item stack and deletes all QgsComposerMapItems contained by the stack.

int QgsComposerMapItemStack::size ( void ) const

inline

Returns the number of items in the stack.

Returns: number of items in the stack

bool QgsComposerMapItemStack::writeXML	(	QDomElement &	elem,
		QDomDocument &	doc
	)		const

virtual

Stores the state of the item stack in a DOM node.

Parameters

elem	is DOM element corresponding to a 'ComposerMap' tag
doc	DOM document

Returns: true if write was successful

See Also: readXML

Member Data Documentation

QgsComposerMap* QgsComposerMapItemStack::mComposerMap

protected

QList< QgsComposerMapItem* > QgsComposerMapItemStack::mItems

protected

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

/tmp/buildd/qgis-2.6.0+wheezy1/src/core/composer/qgscomposermapitem.h
/tmp/buildd/qgis-2.6.0+wheezy1/src/core/composer/qgscomposermapitem.cpp

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation