QGIS API Documentation 3.40.0-Bratislava (b56115d8743)
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A layout item subclass for elevation profile plots. More...
#include <qgslayoutitemelevationprofile.h>
Public Slots | |
void | invalidateCache () override |
void | refresh () override |
Public Slots inherited from QgsLayoutItem | |
virtual void | invalidateCache () |
Forces a deferred update of any cached image the item uses. | |
virtual void | redraw () |
Triggers a redraw (update) of the item. | |
void | refresh () override |
Refreshes the item, causing a recalculation of any property overrides and recalculation of its position and size. | |
virtual void | rotateItem (double angle, QPointF transformOrigin) |
Rotates the item by a specified angle in degrees clockwise around a specified reference point. | |
virtual void | setItemRotation (double rotation, bool adjustPosition=true) |
Sets the layout item's rotation, in degrees clockwise. | |
Public Slots inherited from QgsLayoutObject | |
virtual void | refresh () |
Refreshes the object, causing a recalculation of any property overrides. | |
Signals | |
void | previewRefreshed () |
Emitted whenever the item's preview has been refreshed. | |
Signals inherited from QgsLayoutItem | |
void | backgroundTaskCountChanged (int count) |
Emitted whenever the number of background tasks an item is executing changes. | |
void | clipPathChanged () |
Emitted when the item's clipping path has changed. | |
void | frameChanged () |
Emitted if the item's frame style changes. | |
void | lockChanged () |
Emitted if the item's lock status changes. | |
void | rotationChanged (double newRotation) |
Emitted on item rotation change. | |
void | sizePositionChanged () |
Emitted when the item's size or position changes. | |
Signals inherited from QgsLayoutObject | |
void | changed () |
Emitted when the object's properties change. | |
Public Member Functions | |
QgsLayoutItemElevationProfile (QgsLayout *layout) | |
Constructor for QgsLayoutItemElevationProfile, with the specified parent layout. | |
~QgsLayoutItemElevationProfile () override | |
bool | atlasDriven () const |
Returns whether the profile curve is set to follow the current atlas feature. | |
bool | containsAdvancedEffects () const override |
Returns true if the item contains contents with blend modes or transparency effects which can only be reproduced by rastering the item. | |
QgsCoordinateReferenceSystem | crs () const |
Returns the desired Coordinate Reference System for the profile. | |
Qgis::DistanceUnit | distanceUnit () const |
Returns the units for the distance axis. | |
QIcon | icon () const override |
Returns the item's icon. | |
QgsLayoutItem::Flags | itemFlags () const override |
Returns the item's flags, which indicate how the item behaves. | |
QList< QgsMapLayer * > | layers () const |
Returns the list of map layers participating in the elevation profile. | |
void | paint (QPainter *painter, const QStyleOptionGraphicsItem *itemStyle, QWidget *pWidget) override |
Qgs2DPlot * | plot () |
Returns a reference to the elevation plot object, which can be used to set plot appearance and properties. | |
const Qgs2DPlot * | plot () const |
Returns a reference to the elevation plot object, which can be used to set plot appearance and properties. | |
QgsCurve * | profileCurve () const |
Returns the cross section profile curve, which represents the line along which the profile should be generated. | |
QgsProfileRequest | profileRequest () const |
Returns the profile request used to generate the elevation profile. | |
void | refreshDataDefinedProperty (QgsLayoutObject::DataDefinedProperty property=QgsLayoutObject::DataDefinedProperty::AllProperties) override |
Refreshes a data defined property for the item by reevaluating the property's value and redrawing the item with this new value. | |
bool | requiresRasterization () const override |
Returns true if the item is drawn in such a way that forces the whole layout to be rasterized when exporting to vector formats. | |
void | setAtlasDriven (bool enabled) |
Sets whether the profile curve will follow the current atlas feature. | |
void | setCrs (const QgsCoordinateReferenceSystem &crs) |
Sets the desired Coordinate Reference System (crs) for the profile. | |
void | setDistanceUnit (Qgis::DistanceUnit unit) |
Sets the unit for the distance axis. | |
void | setLayers (const QList< QgsMapLayer * > &layers) |
Sets the list of map layers participating in the elevation profile. | |
void | setProfileCurve (QgsCurve *curve) |
Sets the cross section profile curve, which represents the line along which the profile should be generated. | |
void | setTolerance (double tolerance) |
Sets the tolerance of the request (in crs() units). | |
double | tolerance () const |
Returns the tolerance of the request (in crs() units). | |
int | type () const override |
Public Member Functions inherited from QgsLayoutItem | |
QgsLayoutItem (QgsLayout *layout, bool manageZValue=true) | |
Constructor for QgsLayoutItem, with the specified parent layout. | |
~QgsLayoutItem () override | |
virtual bool | accept (QgsStyleEntityVisitorInterface *visitor) const |
Accepts the specified style entity visitor, causing it to visit all style entities associated with the layout item. | |
virtual void | attemptMove (const QgsLayoutPoint &point, bool useReferencePoint=true, bool includesFrame=false, int page=-1) |
Attempts to move the item to a specified point. | |
void | attemptMoveBy (double deltaX, double deltaY) |
Attempts to shift the item's position by a specified deltaX and deltaY, in layout units. | |
virtual void | attemptResize (const QgsLayoutSize &size, bool includesFrame=false) |
Attempts to resize the item to a specified target size. | |
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. | |
QColor | backgroundColor (bool useDataDefined=true) const |
Returns the background color for this item. | |
void | beginCommand (const QString &commandText, UndoCommand command=UndoNone) |
Starts new undo command for this item. | |
QPainter::CompositionMode | blendMode () const |
Returns the item's composition blending mode. | |
void | cancelCommand () |
Cancels the current item command and discards it. | |
virtual void | cleanup () |
Called just before a batch of items are deleted, allowing them to run cleanup tasks. | |
virtual QgsGeometry | clipPath () const |
Returns the clipping path generated by this item, in layout coordinates. | |
QgsAbstractLayoutUndoCommand * | createCommand (const QString &text, int id, QUndoCommand *parent=nullptr) override |
Creates a new layout undo command with the specified text and parent. | |
QgsExpressionContext | createExpressionContext () const override |
This method needs to be reimplemented in all classes which implement this interface and return an expression context. | |
virtual QString | displayName () const |
Gets item display name. | |
void | endCommand () |
Completes the current item command and push it onto the layout's undo stack. | |
virtual double | estimatedFrameBleed () const |
Returns the estimated amount the item's frame bleeds outside the item's actual rectangle. | |
bool | excludeFromExports () const |
Returns whether the item should be excluded from layout exports and prints. | |
virtual ExportLayerBehavior | exportLayerBehavior () const |
Returns the behavior of this item during exporting to layered exports (e.g. | |
virtual QgsLayoutItem::ExportLayerDetail | exportLayerDetails () const |
Returns the details for the specified current export layer. | |
virtual void | finalizeRestoreFromXml () |
Called after all pending items have been restored from XML. | |
virtual QgsLayoutSize | fixedSize () const |
Returns the fixed size of the item, if applicable, or an empty size if item can be freely resized. | |
bool | frameEnabled () const |
Returns true if the item includes a frame. | |
Qt::PenJoinStyle | frameJoinStyle () const |
Returns the join style used for drawing the item's frame. | |
QColor | frameStrokeColor () const |
Returns the frame's stroke color. | |
QgsLayoutMeasurement | frameStrokeWidth () const |
Returns the frame's stroke width. | |
bool | hasBackground () const |
Returns true if the item has a background. | |
QString | id () const |
Returns the item's ID name. | |
bool | isGroupMember () const |
Returns true if the item is part of a QgsLayoutItemGroup group. | |
bool | isLocked () const |
Returns true if the item is locked, and cannot be interacted with using the mouse. | |
virtual bool | isRefreshing () const |
Returns true if the item is currently refreshing content in the background. | |
double | itemOpacity () const |
Returns the item's opacity. | |
double | itemRotation () const |
Returns the current rotation for the item, in degrees clockwise. | |
virtual QgsLayoutSize | minimumSize () const |
Returns the minimum allowed size of the item, if applicable, or an empty size if item can be freely resized. | |
virtual void | moveContent (double dx, double dy) |
Moves the content of the item, by a specified dx and dy in layout units. | |
virtual bool | nextExportPart () |
Moves to the next export part for a multi-layered export item, during a multi-layered export. | |
virtual Q_DECL_DEPRECATED int | numberExportLayers () const |
Returns the number of layers that this item requires for exporting during layered exports (e.g. | |
int | page () const |
Returns the page the item is currently on, with the first page returning 0. | |
QPointF | pagePos () const |
Returns the item's position (in layout units) relative to the top left corner of its current page. | |
QgsLayoutPoint | pagePositionWithUnits () const |
Returns the item's position (in item units) relative to the top left corner of its current page. | |
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. | |
QgsLayoutItemGroup * | parentGroup () const |
Returns the item's parent group, if the item is part of a QgsLayoutItemGroup group. | |
QgsLayoutPoint | positionWithUnits () const |
Returns the item's current position, including units. | |
bool | readXml (const QDomElement &itemElement, const QDomDocument &document, const QgsReadWriteContext &context) |
Sets the item state from a DOM element. | |
virtual QRectF | rectWithFrame () const |
Returns the item's rectangular bounds, including any bleed caused by the item's frame. | |
ReferencePoint | referencePoint () const |
Returns the reference point for positioning of the layout item. | |
void | setBackgroundColor (const QColor &color) |
Sets the background color for this item. | |
void | setBackgroundEnabled (bool drawBackground) |
Sets whether this item has a background drawn under it or not. | |
void | setBlendMode (QPainter::CompositionMode mode) |
Sets the item's composition blending mode. | |
void | setExcludeFromExports (bool exclude) |
Sets whether the item should be excluded from layout exports and prints. | |
virtual void | setFrameEnabled (bool drawFrame) |
Sets whether this item has a frame drawn around it or not. | |
void | setFrameJoinStyle (Qt::PenJoinStyle style) |
Sets the join style used when drawing the item's frame. | |
void | setFrameStrokeColor (const QColor &color) |
Sets the frame stroke color. | |
virtual void | setFrameStrokeWidth (QgsLayoutMeasurement width) |
Sets the frame stroke width. | |
virtual void | setId (const QString &id) |
Set the item's id name. | |
void | setItemOpacity (double opacity) |
Sets the item's opacity. | |
void | setLocked (bool locked) |
Sets whether the item is locked, preventing mouse interactions with the item. | |
virtual void | setMoveContentPreviewOffset (double dx, double dy) |
Sets temporary offset for the item, by a specified dx and dy in layout units. | |
void | setParentGroup (QgsLayoutItemGroup *group) |
Sets the item's parent group. | |
void | setReferencePoint (ReferencePoint point) |
Sets the reference point for positioning of the layout item. | |
virtual void | setSelected (bool selected) |
Sets whether the item should be selected. | |
virtual void | setVisibility (bool visible) |
Sets whether the item is visible. | |
bool | shouldDrawItem () const |
Returns whether the item should be drawn in the current context. | |
QgsLayoutSize | sizeWithUnits () const |
Returns the item's current size, including units. | |
virtual void | startLayeredExport () |
Starts a multi-layer export operation. | |
virtual void | stopLayeredExport () |
Stops a multi-layer export operation. | |
int | type () const override |
Returns a unique graphics item type identifier. | |
virtual QString | uuid () const |
Returns the item identification string. | |
bool | writeXml (QDomElement &parentElement, QDomDocument &document, const QgsReadWriteContext &context) const |
Stores the item state in a DOM element. | |
virtual void | zoomContent (double factor, QPointF point) |
Zooms content of item. | |
Public Member Functions inherited from QgsLayoutObject | |
QgsLayoutObject (QgsLayout *layout) | |
Constructor for QgsLayoutObject, with the specified parent layout. | |
QgsExpressionContext | createExpressionContext () const override |
Creates an expression context relating to the objects' current state. | |
QStringList | customProperties () const |
Returns list of keys stored in custom properties for the object. | |
QVariant | customProperty (const QString &key, const QVariant &defaultValue=QVariant()) const |
Read a custom property from the object. | |
QgsPropertyCollection & | dataDefinedProperties () |
Returns a reference to the object's property collection, used for data defined overrides. | |
const QgsPropertyCollection & | dataDefinedProperties () const |
Returns a reference to the object's property collection, used for data defined overrides. | |
QgsLayout * | layout () |
Returns the layout the object is attached to. | |
const QgsLayout * | layout () const |
Returns the layout the object is attached to. | |
void | removeCustomProperty (const QString &key) |
Remove a custom property from the object. | |
void | setCustomProperty (const QString &key, const QVariant &value) |
Set a custom property for the object. | |
void | setDataDefinedProperties (const QgsPropertyCollection &collection) |
Sets the objects's property collection, used for data defined overrides. | |
Public Member Functions inherited from QgsExpressionContextGenerator | |
virtual | ~QgsExpressionContextGenerator ()=default |
Public Member Functions inherited from QgsLayoutUndoObjectInterface | |
virtual | ~QgsLayoutUndoObjectInterface ()=default |
Static Public Member Functions | |
static QgsLayoutItemElevationProfile * | create (QgsLayout *layout) |
Returns a new elevation profile item for the specified layout. | |
Static Public Member Functions inherited from QgsLayoutObject | |
static bool | propertyAssociatesWithParentMultiframe (DataDefinedProperty property) |
Returns true if the specified property key is normally associated with the parent QgsLayoutMultiFrame object instead of a child QgsLayoutFrame object. | |
static const QgsPropertiesDefinition & | propertyDefinitions () |
Returns the layout object property definitions. | |
Protected Member Functions | |
void | draw (QgsLayoutItemRenderContext &context) override |
Draws the item's contents using the specified item render context. | |
bool | readPropertiesFromElement (const QDomElement &element, const QDomDocument &document, const QgsReadWriteContext &context) override |
Sets item state from a DOM element. | |
bool | writePropertiesToElement (QDomElement &element, QDomDocument &document, const QgsReadWriteContext &context) const override |
Stores item state within an XML DOM element. | |
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. | |
QgsLayoutSize | applyDataDefinedSize (const QgsLayoutSize &size) |
Applies any present data defined size overrides to the specified layout size. | |
virtual QSizeF | applyItemSizeConstraint (QSizeF targetSize) |
Applies any item-specific size constraint handling to a given targetSize in layout units. | |
virtual void | drawBackground (QgsRenderContext &context) |
Draws the background for the item. | |
virtual void | drawDebugRect (QPainter *painter) |
Draws a debugging rectangle of the item's current bounds within the specified painter. | |
virtual void | drawFrame (QgsRenderContext &context) |
Draws the frame around the item. | |
void | drawRefreshingOverlay (QPainter *painter, const QStyleOptionGraphicsItem *itemStyle) |
Draws a "refreshing" overlay icon on the item. | |
virtual QPainterPath | framePath () const |
Returns the path to use when drawing the item's frame or background. | |
QPointF | positionAtReferencePoint (ReferencePoint reference) const |
Returns the current position (in layout units) of a reference point for the item. | |
void | refreshBackgroundColor (bool updateItem=true) |
Refresh item's background color, considering data defined colors. | |
void | refreshBlendMode () |
Refresh item's blend mode, considering data defined blend mode. | |
void | refreshFrame (bool updateItem=true) |
Refresh item's frame, considering data defined colors and frame size. | |
void | refreshItemPosition () |
Refreshes an item's position by rechecking it against any possible overrides such as data defined positioning. | |
void | refreshItemRotation (QPointF *origin=nullptr) |
Refreshes an item's rotation by rechecking it against any possible overrides such as data defined rotation. | |
void | refreshItemSize () |
Refreshes an item's size by rechecking it against any possible item fixed or minimum sizes. | |
void | refreshOpacity (bool updateItem=true) |
Refresh item's opacity, considering data defined opacity. | |
virtual void | setFixedSize (const QgsLayoutSize &size) |
Sets a fixed size for the layout item, which prevents it from being freely resized. | |
virtual void | setMinimumSize (const QgsLayoutSize &size) |
Sets the minimum allowed size for the layout item. | |
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. | |
Protected Member Functions inherited from QgsLayoutObject | |
bool | readObjectPropertiesFromElement (const QDomElement &parentElement, const QDomDocument &document, const QgsReadWriteContext &context) |
Sets object properties from a DOM element. | |
bool | writeObjectPropertiesToElement (QDomElement &parentElement, QDomDocument &document, const QgsReadWriteContext &context) const |
Stores object properties within an XML DOM element. | |
A layout item subclass for elevation profile plots.
Definition at line 34 of file qgslayoutitemelevationprofile.h.
PRIVATE QgsLayoutItemElevationProfile::QgsLayoutItemElevationProfile | ( | QgsLayout * | layout | ) |
Constructor for QgsLayoutItemElevationProfile, with the specified parent layout.
Definition at line 73 of file qgslayoutitemelevationprofile.cpp.
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override |
Definition at line 97 of file qgslayoutitemelevationprofile.cpp.
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inline |
Returns whether the profile curve is set to follow the current atlas feature.
Definition at line 154 of file qgslayoutitemelevationprofile.h.
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overridevirtual |
Returns true
if the item contains contents with blend modes or transparency effects which can only be reproduced by rastering the item.
Subclasses should ensure that implemented overrides of this method also check the base class result.
Reimplemented from QgsLayoutItem.
Definition at line 458 of file qgslayoutitemelevationprofile.cpp.
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static |
Returns a new elevation profile item for the specified layout.
The caller takes responsibility for deleting the returned object.
Definition at line 108 of file qgslayoutitemelevationprofile.cpp.
QgsCoordinateReferenceSystem QgsLayoutItemElevationProfile::crs | ( | ) | const |
Returns the desired Coordinate Reference System for the profile.
This also represents the CRS associated with the profileCurve().
Definition at line 507 of file qgslayoutitemelevationprofile.cpp.
Qgis::DistanceUnit QgsLayoutItemElevationProfile::distanceUnit | ( | ) | const |
Returns the units for the distance axis.
Definition at line 1008 of file qgslayoutitemelevationprofile.cpp.
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overrideprotectedvirtual |
Draws the item's contents using the specified item render context.
Note that the context's painter has been scaled so that painter units are pixels. Use the QgsRenderContext methods to convert from millimeters or other units to the painter's units.
Implements QgsLayoutItem.
Definition at line 799 of file qgslayoutitemelevationprofile.cpp.
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overridevirtual |
Returns the item's icon.
Reimplemented from QgsLayoutItem.
Definition at line 118 of file qgslayoutitemelevationprofile.cpp.
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overrideslot |
Definition at line 790 of file qgslayoutitemelevationprofile.cpp.
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overridevirtual |
Returns the item's flags, which indicate how the item behaves.
Reimplemented from QgsLayoutItem.
Definition at line 448 of file qgslayoutitemelevationprofile.cpp.
QList< QgsMapLayer * > QgsLayoutItemElevationProfile::layers | ( | ) | const |
Returns the list of map layers participating in the elevation profile.
Definition at line 473 of file qgslayoutitemelevationprofile.cpp.
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override |
Definition at line 552 of file qgslayoutitemelevationprofile.cpp.
Qgs2DPlot * QgsLayoutItemElevationProfile::plot | ( | ) |
Returns a reference to the elevation plot object, which can be used to set plot appearance and properties.
Definition at line 463 of file qgslayoutitemelevationprofile.cpp.
const Qgs2DPlot * QgsLayoutItemElevationProfile::plot | ( | ) | const |
Returns a reference to the elevation plot object, which can be used to set plot appearance and properties.
Definition at line 468 of file qgslayoutitemelevationprofile.cpp.
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signal |
Emitted whenever the item's preview has been refreshed.
QgsCurve * QgsLayoutItemElevationProfile::profileCurve | ( | ) | const |
Returns the cross section profile curve, which represents the line along which the profile should be generated.
The coordinate reference system of the curve is retrieved via crs().
Definition at line 493 of file qgslayoutitemelevationprofile.cpp.
QgsProfileRequest QgsLayoutItemElevationProfile::profileRequest | ( | ) | const |
Returns the profile request used to generate the elevation profile.
Definition at line 531 of file qgslayoutitemelevationprofile.cpp.
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overrideprotectedvirtual |
Sets item state from a DOM element.
element | is the DOM element for the item |
document | DOM document |
context | read write context |
Note that item subclasses should not rely on all other items being present in the layout at the time this method is called. Instead, any connections and links to other items must be made in the finalizeRestoreFromXml() method. E.g. when restoring a scalebar, the connection to the linked map's signals should be implemented in finalizeRestoreFromXml(), not readPropertiesFromElement().
Reimplemented from QgsLayoutItem.
Definition at line 842 of file qgslayoutitemelevationprofile.cpp.
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overrideslot |
Definition at line 769 of file qgslayoutitemelevationprofile.cpp.
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overridevirtual |
Refreshes a data defined property for the item by reevaluating the property's value and redrawing the item with this new value.
If property is set to QgsLayoutObject::AllProperties then all data defined properties for the item will be refreshed.
Reimplemented from QgsLayoutItem.
Definition at line 123 of file qgslayoutitemelevationprofile.cpp.
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overridevirtual |
Returns true
if the item is drawn in such a way that forces the whole layout to be rasterized when exporting to vector formats.
Reimplemented from QgsLayoutItem.
Definition at line 453 of file qgslayoutitemelevationprofile.cpp.
void QgsLayoutItemElevationProfile::setAtlasDriven | ( | bool | enabled | ) |
Sets whether the profile curve will follow the current atlas feature.
This requires an active layout atlas or report, using a line geometry type coverage layer.
Definition at line 526 of file qgslayoutitemelevationprofile.cpp.
void QgsLayoutItemElevationProfile::setCrs | ( | const QgsCoordinateReferenceSystem & | crs | ) |
Sets the desired Coordinate Reference System (crs) for the profile.
This also represents the CRS associated with the profileCurve().
Definition at line 498 of file qgslayoutitemelevationprofile.cpp.
void QgsLayoutItemElevationProfile::setDistanceUnit | ( | Qgis::DistanceUnit | unit | ) |
Sets the unit for the distance axis.
Definition at line 1013 of file qgslayoutitemelevationprofile.cpp.
void QgsLayoutItemElevationProfile::setLayers | ( | const QList< QgsMapLayer * > & | layers | ) |
Sets the list of map layers participating in the elevation profile.
Definition at line 478 of file qgslayoutitemelevationprofile.cpp.
void QgsLayoutItemElevationProfile::setProfileCurve | ( | QgsCurve * | curve | ) |
Sets the cross section profile curve, which represents the line along which the profile should be generated.
Ownership of curve is transferred to the item.
The coordinate reference system of the curve is set via setCrs().
Definition at line 487 of file qgslayoutitemelevationprofile.cpp.
void QgsLayoutItemElevationProfile::setTolerance | ( | double | tolerance | ) |
Sets the tolerance of the request (in crs() units).
This value determines how far from the profileCurve() is appropriate for inclusion of results. For instance, when a profile is generated for a point vector layer this tolerance distance will dictate how far from the actual profile curve a point can reside within to be included in the results. Other sources may completely ignore this tolerance if it is not appropriate for the particular source.
Definition at line 512 of file qgslayoutitemelevationprofile.cpp.
double QgsLayoutItemElevationProfile::tolerance | ( | ) | const |
Returns the tolerance of the request (in crs() units).
This value determines how far from the profileCurve() is appropriate for inclusion of results. For instance, when a profile is generated for a point vector layer this tolerance distance will dictate how far from the actual profile curve a point can reside within to be included in the results. Other sources may completely ignore this tolerance if it is not appropriate for the particular source.
Definition at line 521 of file qgslayoutitemelevationprofile.cpp.
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override |
Definition at line 113 of file qgslayoutitemelevationprofile.cpp.
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overrideprotectedvirtual |
Stores item state within an XML DOM element.
element | is the DOM element to store the item's properties in |
document | DOM document |
context | read write context |
Reimplemented from QgsLayoutItem.
Definition at line 803 of file qgslayoutitemelevationprofile.cpp.