Layout item for node based polygon shapes. More...

#include <qgslayoutitempolygon.h>

Inheritance diagram for QgsLayoutItemPolygon:

Public Member Functions
	QgsLayoutItemPolygon (QgsLayout *layout)
	Constructor for QgsLayoutItemPolygon for the specified layout. More...

	QgsLayoutItemPolygon (const QPolygonF &polygon, QgsLayout *layout)
	Constructor for QgsLayoutItemPolygon for the specified polygon and layout. More...

QString	displayName () const override
	Gets item display name. More...

QIcon	icon () const override
	Returns the item's icon. More...

void	setSymbol (QgsFillSymbol *symbol)
	Sets the symbol used to draw the shape. More...

QgsFillSymbol *	symbol ()
	Returns the fill symbol used to draw the shape. More...

int	type () const override

Public Member Functions inherited from QgsLayoutNodesItem
bool	addNode (QPointF point, bool checkArea=true, double radius=10)
	Add a node in current shape. More...

QRectF	boundingRect () const override

void	deselectNode ()
	Deselects any selected nodes. More...

double	estimatedFrameBleed () const override
	Returns the estimated amount the item's frame bleeds outside the item's actual rectangle. More...

bool	moveNode (int index, QPointF node)
	Moves a node to a new position. More...

int	nodeAtPosition (QPointF point, bool searchInRadius=true, double radius=10) const
	Search for the nearest node in the shape within a maximal area. More...

bool	nodePosition (int index, QPointF &position) const
	Gets the position of a node in scene coordinates. More...

QPolygonF	nodes () const
	Returns the nodes the shape consists of. More...

int	nodesSize () const
	Returns the number of nodes in the shape. More...

bool	removeNode (int index)
	Remove a node with specified index from the shape. More...

int	selectedNode () const
	Returns the currently selected node, or -1 if no node is selected. More...

void	setDisplayNodes (bool display=true)
	Set whether the item's nodes should be displayed. More...

void	setNodes (const QPolygonF &nodes)
	Sets the nodes the shape consists of. More...

bool	setSelectedNode (int index)
	Selects a node by index. More...

Public Member Functions inherited from QgsLayoutItem
	QgsLayoutItem (QgsLayout *layout, bool manageZValue=true)
	Constructor for QgsLayoutItem, with the specified parent layout. More...

	~QgsLayoutItem () override

virtual void	attemptMove (const QgsLayoutPoint &point, bool useReferencePoint=true, bool includesFrame=false, int page=-1)
	Attempts to move the item to a specified point. More...

void	attemptMoveBy (double deltaX, double deltaY)
	Attempts to shift the item's position by a specified deltaX and deltaY, in layout units. More...

virtual void	attemptResize (const QgsLayoutSize &size, bool includesFrame=false)
	Attempts to resize the item to a specified target size. More...

void	attemptSetSceneRect (const QRectF &rect, bool includesFrame=false)
	Attempts to update the item's position and size to match the passed rect in layout coordinates. More...

QColor	backgroundColor () const
	Returns the background color for this item. More...

void	beginCommand (const QString &commandText, UndoCommand command=UndoNone)
	Starts new undo command for this item. More...

QPainter::CompositionMode	blendMode () const
	Returns the item's composition blending mode. More...

void	cancelCommand ()
	Cancels the current item command and discards it. More...

virtual void	cleanup ()
	Called just before a batch of items are deleted, allowing them to run cleanup tasks. More...

virtual bool	containsAdvancedEffects () const
	Returns true if the item contains contents with blend modes or transparency effects which can only be reproduced by rastering the item. More...

QgsAbstractLayoutUndoCommand *	createCommand (const QString &text, int id, QUndoCommand *parent=nullptr) override
	Creates a new layout undo command with the specified text and parent. More...

QgsExpressionContext	createExpressionContext () const override
	This method needs to be reimplemented in all classes which implement this interface and return an expression context. More...

void	endCommand ()
	Completes the current item command and push it onto the layout's undo stack. More...

bool	excludeFromExports () const
	Returns whether the item should be excluded from layout exports and prints. More...

virtual void	finalizeRestoreFromXml ()
	Called after all pending items have been restored from XML. More...

virtual QgsLayoutSize	fixedSize () const
	Returns the fixed size of the item, if applicable, or an empty size if item can be freely resized. More...

bool	frameEnabled () const
	Returns true if the item includes a frame. More...

Qt::PenJoinStyle	frameJoinStyle () const
	Returns the join style used for drawing the item's frame. More...

QColor	frameStrokeColor () const
	Returns the frame's stroke color. More...

QgsLayoutMeasurement	frameStrokeWidth () const
	Returns the frame's stroke width. More...

bool	hasBackground () const
	Returns true if the item has a background. More...

QString	id () const
	Returns the item's ID name. More...

bool	isGroupMember () const
	Returns true if the item is part of a QgsLayoutItemGroup group. More...

bool	isLocked () const
	Returns true if the item is locked, and cannot be interacted with using the mouse. More...

virtual Flags	itemFlags () const
	Returns the item's flags, which indicate how the item behaves. More...

double	itemOpacity () const
	Returns the item's opacity. More...

double	itemRotation () const
	Returns the current rotation for the item, in degrees clockwise. More...

virtual QgsLayoutSize	minimumSize () const
	Returns the minimum allowed size of the item, if applicable, or an empty size if item can be freely resized. More...

virtual void	moveContent (double dx, double dy)
	Moves the content of the item, by a specified dx and dy in layout units. More...

virtual int	numberExportLayers () const
	Returns the number of layers that this item requires for exporting during layered exports (e.g. More...

int	page () const
	Returns the page the item is currently on, with the first page returning 0. More...

QPointF	pagePos () const
	Returns the item's position (in layout units) relative to the top left corner of its current page. More...

QgsLayoutPoint	pagePositionWithUnits () const
	Returns the item's position (in item units) relative to the top left corner of its current page. More...

void	paint (QPainter painter, const QStyleOptionGraphicsItem itemStyle, QWidget *pWidget) override
	Handles preparing a paint surface for the layout item and painting the item's content. More...

QgsLayoutItemGroup *	parentGroup () const
	Returns the item's parent group, if the item is part of a QgsLayoutItemGroup group. More...

QgsLayoutPoint	positionWithUnits () const
	Returns the item's current position, including units. More...

bool	readXml (const QDomElement &itemElement, const QDomDocument &document, const QgsReadWriteContext &context)
	Sets the item state from a DOM element. More...

virtual QRectF	rectWithFrame () const
	Returns the item's rectangular bounds, including any bleed caused by the item's frame. More...

ReferencePoint	referencePoint () const
	Returns the reference point for positioning of the layout item. More...

virtual bool	requiresRasterization () const
	Returns true if the item is drawn in such a way that forces the whole layout to be rasterized when exporting to vector formats. More...

void	setBackgroundColor (const QColor &color)
	Sets the background color for this item. More...

void	setBackgroundEnabled (bool drawBackground)
	Sets whether this item has a background drawn under it or not. More...

void	setBlendMode (QPainter::CompositionMode mode)
	Sets the item's composition blending mode. More...

void	setExcludeFromExports (bool exclude)
	Sets whether the item should be excluded from layout exports and prints. More...

virtual void	setFrameEnabled (bool drawFrame)
	Sets whether this item has a frame drawn around it or not. More...

void	setFrameJoinStyle (Qt::PenJoinStyle style)
	Sets the join style used when drawing the item's frame. More...

void	setFrameStrokeColor (const QColor &color)
	Sets the frame stroke color. More...

virtual void	setFrameStrokeWidth (QgsLayoutMeasurement width)
	Sets the frame stroke width. More...

virtual void	setId (const QString &id)
	Set the item's id name. More...

void	setItemOpacity (double opacity)
	Sets the item's opacity. More...

void	setLocked (bool locked)
	Sets whether the item is locked, preventing mouse interactions with the item. More...

virtual void	setMoveContentPreviewOffset (double dx, double dy)
	Sets temporary offset for the item, by a specified dx and dy in layout units. More...

void	setParentGroup (QgsLayoutItemGroup *group)
	Sets the item's parent group. More...

void	setReferencePoint (ReferencePoint point)
	Sets the reference point for positioning of the layout item. More...

virtual void	setSelected (bool selected)
	Sets whether the item should be selected. More...

virtual void	setVisibility (bool visible)
	Sets whether the item is visible. More...

bool	shouldDrawItem () const
	Returns whether the item should be drawn in the current context. More...

QgsLayoutSize	sizeWithUnits () const
	Returns the item's current size, including units. More...

int	type () const override
	Returns a unique graphics item type identifier. More...

virtual QString	uuid () const
	Returns the item identification string. More...

bool	writeXml (QDomElement &parentElement, QDomDocument &document, const QgsReadWriteContext &context) const
	Stores the item state in a DOM element. More...

virtual void	zoomContent (double factor, QPointF point)
	Zooms content of item. More...

Public Member Functions inherited from QgsLayoutObject
	QgsLayoutObject (QgsLayout *layout)
	Constructor for QgsLayoutObject, with the specified parent layout. More...

QgsExpressionContext	createExpressionContext () const override
	Creates an expression context relating to the objects' current state. More...

QStringList	customProperties () const
	Returns list of keys stored in custom properties for the object. More...

QVariant	customProperty (const QString &key, const QVariant &defaultValue=QVariant()) const
	Read a custom property from the object. More...

QgsPropertyCollection &	dataDefinedProperties ()
	Returns a reference to the object's property collection, used for data defined overrides. More...

const QgsPropertyCollection &	dataDefinedProperties () const
	Returns a reference to the object's property collection, used for data defined overrides. More...

const QgsLayout *	layout () const
	Returns the layout the object is attached to. More...

QgsLayout *	layout ()
	Returns the layout the object is attached to. More...

void	removeCustomProperty (const QString &key)
	Remove a custom property from the object. More...

void	setCustomProperty (const QString &key, const QVariant &value)
	Set a custom property for the object. More...

void	setDataDefinedProperties (const QgsPropertyCollection &collection)
	Sets the objects's property collection, used for data defined overrides. More...

Public Member Functions inherited from QgsExpressionContextGenerator
virtual	~QgsExpressionContextGenerator ()=default

Public Member Functions inherited from QgsLayoutUndoObjectInterface
virtual	~QgsLayoutUndoObjectInterface ()=default
	Destructor for QgsLayoutUndoObjectInterface. More...

Static Public Member Functions
static QgsLayoutItemPolygon *	create (QgsLayout *layout)
	Returns a new polygon item for the specified layout. More...

Static Public Member Functions inherited from QgsLayoutObject
static const QgsPropertiesDefinition &	propertyDefinitions ()
	Returns the layout object property definitions. More...

Protected Member Functions
bool	_addNode (int indexPoint, QPointF newPoint, double radius) override
	Method called in addNode. More...

void	_draw (QgsLayoutItemRenderContext &context, const QStyleOptionGraphicsItem *itemStyle=nullptr) override
	Method called in paint. More...

void	_readXmlStyle (const QDomElement &elmt, const QgsReadWriteContext &context) override
	Method called in readXml. More...

bool	_removeNode (int nodeIndex) override
	Method called in removeNode. More...

void	_writeXmlStyle (QDomDocument &doc, QDomElement &elmt, const QgsReadWriteContext &context) const override
	Method called in writeXml. More...

Protected Member Functions inherited from QgsLayoutNodesItem
	QgsLayoutNodesItem (QgsLayout *layout)
	Constructor for QgsLayoutNodesItem, attached to the specified layout. More...

	QgsLayoutNodesItem (const QPolygonF &polygon, QgsLayout *layout)
	Constructor for a QgsLayoutNodesItem with the given polygon nodes, attached to the specified layout. More...

double	computeDistance (QPointF pt1, QPointF pt2) const
	Compute an euclidian distance between 2 nodes. More...

void	draw (QgsLayoutItemRenderContext &context) override
	Draws the item's contents using the specified item render context. More...

bool	readPropertiesFromElement (const QDomElement &element, const QDomDocument &document, const QgsReadWriteContext &context) override
	Sets item state from a DOM element. More...

void	rescaleToFitBoundingBox ()
	Rescale the current shape according to the item's bounding box. More...

void	updateSceneRect ()
	Update the current scene rectangle for this item. More...

bool	writePropertiesToElement (QDomElement &element, QDomDocument &document, const QgsReadWriteContext &context) const override
	Stores item state within an XML DOM element. More...

Protected Member Functions inherited from QgsLayoutItem
QPointF	adjustPointForReferencePosition (QPointF point, QSizeF size, ReferencePoint reference) const
	Adjusts the specified point at which a reference position of the item sits and returns the top left corner of the item, if reference point were placed at the specified position. More...

QgsLayoutSize	applyDataDefinedSize (const QgsLayoutSize &size)
	Applies any present data defined size overrides to the specified layout size. More...

virtual QSizeF	applyItemSizeConstraint (QSizeF targetSize)
	Applies any item-specific size constraint handling to a given targetSize in layout units. More...

virtual void	drawBackground (QgsRenderContext &context)
	Draws the background for the item. More...

virtual void	drawDebugRect (QPainter *painter)
	Draws a debugging rectangle of the item's current bounds within the specified painter. More...

virtual void	drawFrame (QgsRenderContext &context)
	Draws the frame around the item. More...

QPointF	positionAtReferencePoint (ReferencePoint reference) const
	Returns the current position (in layout units) of a reference point for the item. More...

void	refreshBackgroundColor (bool updateItem=true)
	Refresh item's background color, considering data defined colors. More...

void	refreshBlendMode ()
	Refresh item's blend mode, considering data defined blend mode. More...

void	refreshFrame (bool updateItem=true)
	Refresh item's frame, considering data defined colors and frame size. More...

void	refreshItemPosition ()
	Refreshes an item's position by rechecking it against any possible overrides such as data defined positioning. More...

void	refreshItemRotation (QPointF *origin=nullptr)
	Refreshes an item's rotation by rechecking it against any possible overrides such as data defined rotation. More...

void	refreshItemSize ()
	Refreshes an item's size by rechecking it against any possible item fixed or minimum sizes. More...

void	refreshOpacity (bool updateItem=true)
	Refresh item's opacity, considering data defined opacity. More...

virtual void	setFixedSize (const QgsLayoutSize &size)
	Sets a fixed size for the layout item, which prevents it from being freely resized. More...

virtual void	setMinimumSize (const QgsLayoutSize &size)
	Sets the minimum allowed size for the layout item. More...

QgsLayoutPoint	topLeftToReferencePoint (const QgsLayoutPoint &point) const
	Returns the position for the reference point of the item, if the top-left of the item was placed at the specified point. More...

Protected Member Functions inherited from QgsLayoutObject
bool	readObjectPropertiesFromElement (const QDomElement &parentElement, const QDomDocument &document, const QgsReadWriteContext &context)
	Sets object properties from a DOM element. More...

bool	writeObjectPropertiesToElement (QDomElement &parentElement, QDomDocument &document, const QgsReadWriteContext &context) const
	Stores object properties within an XML DOM element. More...

Additional Inherited Members
Public Types inherited from QgsLayoutItem
enum	Flag { FlagOverridesPaint = 1 << 1 }
	Flags for controlling how an item behaves. More...

enum	ReferencePoint { UpperLeft, UpperMiddle, UpperRight, MiddleLeft, Middle, MiddleRight, LowerLeft, LowerMiddle, LowerRight }
	Fixed position reference point. More...

enum	UndoCommand { UndoNone = -1, UndoIncrementalMove = 1, UndoIncrementalResize, UndoStrokeColor, UndoStrokeWidth, UndoBackgroundColor, UndoOpacity, UndoSetId, UndoRotation, UndoShapeStyle, UndoShapeCornerRadius, UndoNodeMove, UndoAtlasMargin, UndoMapRotation, UndoZoomContent, UndoOverviewStyle, UndoGridFramePenColor, UndoMapGridFrameFill1Color, UndoMapGridFrameFill2Color, UndoMapAnnotationDistance, UndoMapGridAnnotationFontColor, UndoMapGridLineSymbol, UndoMapGridMarkerSymbol, UndoPictureRotation, UndoPictureFillColor, UndoPictureStrokeColor, UndoPictureStrokeWidth, UndoPictureNorthOffset, UndoLabelText, UndoLabelFont, UndoLabelMargin, UndoLabelFontColor, UndoLegendText, UndoLegendColumnCount, UndoLegendSymbolWidth, UndoLegendSymbolHeight, UndoLegendWmsLegendWidth, UndoLegendWmsLegendHeight, UndoLegendTitleSpaceBottom, UndoLegendGroupSpace, UndoLegendLayerSpace, UndoLegendSymbolSpace, UndoLegendIconSymbolSpace, UndoLegendFontColor, UndoLegendBoxSpace, UndoLegendColumnSpace, UndoLegendLineSpacing, UndoLegendRasterStrokeWidth, UndoLegendRasterStrokeColor, UndoLegendTitleFont, UndoLegendGroupFont, UndoLegendLayerFont, UndoLegendItemFont, UndoScaleBarLineWidth, UndoScaleBarSegmentSize, UndoScaleBarSegmentsLeft, UndoScaleBarSegments, UndoScaleBarHeight, UndoScaleBarFontColor, UndoScaleBarFillColor, UndoScaleBarFillColor2, UndoScaleBarStrokeColor, UndoScaleBarUnitText, UndoScaleBarMapUnitsSegment, UndoScaleBarLabelBarSize, UndoScaleBarBoxContentSpace, UndoArrowStrokeWidth, UndoArrowHeadWidth, UndoArrowHeadFillColor, UndoArrowHeadStrokeColor, UndoCustomCommand }
	Layout item undo commands, used for collapsing undo commands. More...

Public Types inherited from QgsLayoutObject
enum	DataDefinedProperty { NoProperty = 0, AllProperties, TestProperty, PresetPaperSize, PaperWidth, PaperHeight, NumPages, PaperOrientation, PageNumber, PositionX, PositionY, ItemWidth, ItemHeight, ItemRotation, Transparency, Opacity, BlendMode, ExcludeFromExports, FrameColor, BackgroundColor, MapRotation, MapScale, MapXMin, MapYMin, MapXMax, MapYMax, MapAtlasMargin, MapLayers, MapStylePreset, PictureSource, PictureSvgBackgroundColor, PictureSvgStrokeColor, PictureSvgStrokeWidth, SourceUrl, LegendTitle, LegendColumnCount, ScalebarFillColor, ScalebarFillColor2, ScalebarLineColor, ScalebarLineWidth, AttributeTableSourceLayer }
	Data defined properties for different item types. More...

enum	PropertyValueType { EvaluatedValue = 0, OriginalValue }
	Specifies whether the value returned by a function should be the original, user set value, or the current evaluated value for the property. More...

Public Slots inherited from QgsLayoutItem
virtual void	invalidateCache ()
	Forces a deferred update of any cached image the item uses. More...

virtual void	redraw ()
	Triggers a redraw (update) of the item. More...

void	refresh () override
	Refreshes the item, causing a recalculation of any property overrides and recalculation of its position and size. More...

virtual void	refreshDataDefinedProperty (QgsLayoutObject::DataDefinedProperty property=QgsLayoutObject::AllProperties)
	Refreshes a data defined property for the item by reevaluating the property's value and redrawing the item with this new value. More...

virtual void	rotateItem (double angle, QPointF transformOrigin)
	Rotates the item by a specified angle in degrees clockwise around a specified reference point. More...

virtual void	setItemRotation (double rotation, bool adjustPosition=true)
	Sets the layout item's rotation, in degrees clockwise. More...

Public Slots inherited from QgsLayoutObject
virtual void	refresh ()
	Refreshes the object, causing a recalculation of any property overrides. More...

Signals inherited from QgsLayoutItem
void	frameChanged ()
	Emitted if the item's frame style changes. More...

void	lockChanged ()
	Emitted if the item's lock status changes. More...

void	rotationChanged (double newRotation)
	Emitted on item rotation change. More...

void	sizePositionChanged ()
	Emitted when the item's size or position changes. More...

Signals inherited from QgsLayoutObject
void	changed ()
	Emitted when the object's properties change. More...

Protected Slots inherited from QgsLayoutNodesItem
virtual void	updateBoundingRect ()
	Called when the bounding rect of the item should recalculated. More...

Protected Attributes inherited from QgsLayoutNodesItem
QRectF	mCurrentRectangle
	Current bounding rectangle of shape. More...

double	mMaxSymbolBleed = 0.0
	Max symbol bleed. More...

QPolygonF	mPolygon
	Shape's nodes. More...

Protected Attributes inherited from QgsLayoutObject
QgsObjectCustomProperties	mCustomProperties
	Custom properties for object. More...

QgsPropertyCollection	mDataDefinedProperties

QPointer< QgsLayout >	mLayout

Properties inherited from QgsLayoutItem
bool	locked

Detailed Description

Layout item for node based polygon shapes.

Since: QGIS 3.0

Definition at line 30 of file qgslayoutitempolygon.h.

Constructor & Destructor Documentation

QgsLayoutItemPolygon::QgsLayoutItemPolygon ( QgsLayout * layout )

Constructor for QgsLayoutItemPolygon for the specified layout.

Definition at line 28 of file qgslayoutitempolygon.cpp.

QgsLayoutItemPolygon::QgsLayoutItemPolygon	(	const QPolygonF &	polygon,
		QgsLayout *	layout
	)

Constructor for QgsLayoutItemPolygon for the specified polygon and layout.

Definition at line 34 of file qgslayoutitempolygon.cpp.

Member Function Documentation

bool QgsLayoutItemPolygon::_addNode	(	int	nodeIndex,
		QPointF	newNode,
		double	radius
	)

overrideprotectedvirtual

Method called in addNode.

Implements QgsLayoutNodesItem.

Definition at line 55 of file qgslayoutitempolygon.cpp.

void QgsLayoutItemPolygon::_draw	(	QgsLayoutItemRenderContext &	context,
		const QStyleOptionGraphicsItem *	itemStyle = `nullptr`
	)

overrideprotectedvirtual

Method called in paint.

Implements QgsLayoutNodesItem.

Definition at line 100 of file qgslayoutitempolygon.cpp.

void QgsLayoutItemPolygon::_readXmlStyle	(	const QDomElement &	elmt,
		const QgsReadWriteContext &	context
	)

overrideprotectedvirtual

Method called in readXml.

Implements QgsLayoutNodesItem.

Definition at line 116 of file qgslayoutitempolygon.cpp.

bool QgsLayoutItemPolygon::_removeNode ( int nodeIndex )

overrideprotectedvirtual

Method called in removeNode.

Implements QgsLayoutNodesItem.

Definition at line 136 of file qgslayoutitempolygon.cpp.

void QgsLayoutItemPolygon::_writeXmlStyle	(	QDomDocument &	doc,
		QDomElement &	elmt,
		const QgsReadWriteContext &	context
	)		const

overrideprotectedvirtual

Method called in writeXml.

Implements QgsLayoutNodesItem.

Definition at line 127 of file qgslayoutitempolygon.cpp.

QgsLayoutItemPolygon * QgsLayoutItemPolygon::create ( QgsLayout * layout )

static

Returns a new polygon item for the specified layout.

The caller takes responsibility for deleting the returned object.

Definition at line 40 of file qgslayoutitempolygon.cpp.

QString QgsLayoutItemPolygon::displayName ( ) const

overridevirtual

Gets item display name.

This is the item's id if set, and if not, a user-friendly string identifying item type.

See also: id(); setId()

Reimplemented from QgsLayoutItem.

Definition at line 92 of file qgslayoutitempolygon.cpp.

QIcon QgsLayoutItemPolygon::icon ( ) const

overridevirtual

Returns the item's icon.

Reimplemented from QgsLayoutItem.

Definition at line 50 of file qgslayoutitempolygon.cpp.

void QgsLayoutItemPolygon::setSymbol ( QgsFillSymbol * symbol )

Sets the symbol used to draw the shape.

Ownership of symbol is not transferred.

See also: symbol()

Definition at line 121 of file qgslayoutitempolygon.cpp.

QgsFillSymbol* QgsLayoutItemPolygon::symbol ( )

inline

Returns the fill symbol used to draw the shape.

See also: setSymbol()

Definition at line 62 of file qgslayoutitempolygon.h.

int QgsLayoutItemPolygon::type ( ) const

override

Definition at line 45 of file qgslayoutitempolygon.cpp.

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

/build/qgis-3.4.15+24xenial/src/core/layout/qgslayoutitempolygon.h
/build/qgis-3.4.15+24xenial/src/core/layout/qgslayoutitempolygon.cpp

Public Member Functions

Static Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation