Inkscape: SPOffset Class Reference

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#include <sp-offset.h>

Inheritance diagram for SPOffset:

Public Member Functions
	SPOffset ()

	~SPOffset () override

int	tag () const override

void	build (SPDocument document, Inkscape::XML::Node repr) override

void	set (SPAttr key, char const *value) override

void	update (SPCtx *ctx, unsigned int flags) override

Inkscape::XML::Node *	write (Inkscape::XML::Document xml_doc, Inkscape::XML::Node repr, unsigned flags) override

void	release () override

void	snappoints (std::vector< Inkscape::SnapCandidatePoint > &p, Inkscape::SnapPreferences const *snapprefs) const override

const char *	displayName () const override
	The item's type name as a translated human string.

const char *	typeName () const override
	The item's type name, not node tag name.

char *	description () const override

void	set_shape () override

Public Member Functions inherited from SPShape
	SPShape ()

	~SPShape () override

int	tag () const override

Geom::PathVector const *	curve () const
	Return a borrowed pointer to the curve (if any exists) or NULL if there is no curve.

Geom::PathVector const *	curveBeforeLPE () const
	Return a borrowed pointer of the curve before LPE (if any exists) or NULL if there is no curve.

Geom::PathVector const *	curveForEdit () const
	Return a borrowed pointer of the curve for edit.

void	setCurve (Geom::PathVector const *)

void	setCurve (Geom::PathVector)
	Adds a curve to the shape.

void	setCurveInsync (Geom::PathVector const *)

void	setCurveInsync (Geom::PathVector)
	Same as setCurve() but without updating the display.

void	setCurveBeforeLPE (Geom::PathVector const *)

void	setCurveBeforeLPE (Geom::PathVector)
	Sets _curve_before_lpe to a copy of `new_curve`

bool	checkBrokenPathEffect ()

bool	prepareShapeForLPE (Geom::PathVector &&c)

int	hasMarkers () const

int	numberOfMarkers (int type) const

void	build (SPDocument document, Inkscape::XML::Node repr) override

void	release () override
	Removes, releases and unrefs all children of object.

void	update (SPCtx *ctx, unsigned int flags) override

void	modified (unsigned int flags) override

void	set (SPAttr key, char const *value) override

Inkscape::XML::Node *	write (Inkscape::XML::Document xml_doc, Inkscape::XML::Node repr, unsigned int flags) override

Geom::OptRect	bbox (Geom::Affine const &transform, SPItem::BBoxType bboxtype) const override

Geom::OptRect	either_bbox (Geom::Affine const &transform, SPItem::BBoxType bboxtype, bool cache_is_valid, Geom::OptRect bbox_cache, Geom::Affine const &transform_cache) const

void	print (SPPrintContext *ctx) override

std::optional< Geom::PathVector >	documentExactBounds () const override
	Get an exact geometric shape representing the visual bounds of the item in the document coordinates.

Inkscape::DrawingItem *	show (Inkscape::Drawing &drawing, unsigned int key, unsigned int flags) override

void	hide (unsigned int key) override
	Sets style, path, and paintbox.

void	snappoints (std::vector< Inkscape::SnapCandidatePoint > &p, Inkscape::SnapPreferences const *snapprefs) const override

void	update_patheffect (bool write) override

void	set_marker (unsigned key, char const *value)
	Adds a new marker to shape object at the location indicated by key.

std::vector< std::tuple< SPMarkerLoc, SPMarker *, Geom::Affine > >	get_markers () const
	Lists every marker on this shape along with its transform and marker type.

Public Member Functions inherited from SPLPEItem
	SPLPEItem ()

	~SPLPEItem () override

void	replacePathEffects (std::vector< LivePathEffectObject const * > const &old_lpeobjs, std::vector< LivePathEffectObject const * > const &new_lpeobjs)
	Writes a new "inkscape:path-effect" string to xml, where the old_lpeobjects are substituted by the new ones.

void	child_added (Inkscape::XML::Node child, Inkscape::XML::Node ref) override

void	remove_child (Inkscape::XML::Node *child) override

bool	optimizeTransforms ()
	returns false when LPE write unoptimiced

void	notifyTransform (Geom::Affine const &postmul)
	notify tranbsform applied to a LPE

bool	performPathEffect (Geom::PathVector &curve, SPShape *current, bool is_clip_or_mask=false)
	returns true when LPE was successful.

bool	performOnePathEffect (Geom::PathVector &curve, SPShape current, Inkscape::LivePathEffect::Effect lpe, bool is_clip_or_mask=false)
	returns true when LPE was successful.

bool	pathEffectsEnabled () const

bool	hasPathEffect () const

bool	hasPathEffectOfType (int const type, bool is_ready=true) const

bool	hasPathEffectOfTypeRecursive (int const type, bool is_ready=true) const

bool	hasPathEffectRecursive () const

SPLPEItem const *	getTopPathEffect () const
	returns top most LPE item with LPE

bool	hasPathEffectOnClipOrMask (SPLPEItem *shape) const
	returns true when any LPE apply to clip or mask.

bool	hasPathEffectOnClipOrMaskRecursive (SPLPEItem *shape) const
	returns true when any LPE apply to clip or mask.

std::size_t	getLPEIndex (Inkscape::LivePathEffect::Effect *lpe) const

std::size_t	countLPEOfType (int const type, bool inc_hidden=true, bool is_ready=true) const

std::size_t	getLPEReferenceIndex (PathEffectSharedPtr const &lperef) const

Inkscape::LivePathEffect::Effect *	getFirstPathEffectOfType (int type)

Inkscape::LivePathEffect::Effect const *	getFirstPathEffectOfType (int type) const

std::vector< Inkscape::LivePathEffect::Effect * >	getPathEffectsOfType (int type)

std::vector< Inkscape::LivePathEffect::Effect const * >	getPathEffectsOfType (int type) const

std::vector< Inkscape::LivePathEffect::Effect * >	getPathEffects ()

std::vector< Inkscape::LivePathEffect::Effect const * >	getPathEffects () const

std::vector< SPObject * >	get_satellites (bool force=true, bool recursive=false, bool onchilds=false)

bool	isOnClipboard ()
	The lpeitem is on clipboard.

bool	isOnSymbol () const

bool	hasBrokenPathEffect () const
	used for shapes so they can see if they should also disable shape calculation and read from d=

PathEffectList	getEffectList ()

PathEffectList const	getEffectList () const

void	duplicateCurrentPathEffect ()

void	downCurrentPathEffect ()

void	upCurrentPathEffect ()

void	removePathEffect (Inkscape::LivePathEffect::Effect *lpe, bool keep_paths)

void	movePathEffect (gint origin, gint dest, bool select_moved=false)

SPLPEItem *	flattenCurrentPathEffect ()

PathEffectSharedPtr	getCurrentLPEReference ()

Inkscape::LivePathEffect::Effect *	getCurrentLPE ()

PathEffectSharedPtr	getPrevLPEReference (PathEffectSharedPtr const &lperef)

Inkscape::LivePathEffect::Effect *	getPrevLPE (Inkscape::LivePathEffect::Effect *lpe)

PathEffectSharedPtr	getNextLPEReference (PathEffectSharedPtr const &lperef)

Inkscape::LivePathEffect::Effect *	getNextLPE (Inkscape::LivePathEffect::Effect *lpe)

PathEffectSharedPtr	getLastLPEReference ()

Inkscape::LivePathEffect::Effect *	getLastLPE ()

bool	setCurrentPathEffect (PathEffectSharedPtr const &lperef)

bool	setCurrentPathEffect (LivePathEffectObject const *lpeobj)

SPLPEItem *	removeCurrentPathEffect (bool keep_paths)
	If keep_path is true, the item should not be updated, effectively 'flattening' the LPE.

SPLPEItem *	removeAllPathEffects (bool keep_paths, bool recursive=false)
	If keep_path is true, the item should not be updated, effectively 'flattening' the LPE.

void	addPathEffect (std::string value, bool reset)

void	addPathEffect (LivePathEffectObject *new_lpeobj)

void	resetClipPathAndMaskLPE (bool fromrecurse=false)

void	applyToMask (SPItem to, Inkscape::LivePathEffect::Effect lpe=nullptr)

void	applyToClipPath (SPItem to, Inkscape::LivePathEffect::Effect lpe=nullptr)

void	applyToClipPathOrMask (SPItem clip_mask, SPItem to, Inkscape::LivePathEffect::Effect *lpe=nullptr)

bool	forkPathEffectsIfNecessary (unsigned int nr_of_allowed_users=1, bool recursive=true, bool force=false)
	Check all effects in the stack if they are used by other items, and fork them if so.

void	editNextParamOncanvas (SPDesktop *dt)

void	update_satellites (bool recursive=true)

Public Member Functions inherited from SPItem
	SPItem ()

	~SPItem () override

SPClipPath *	getClipObject () const

SPMask *	getMaskObject () const

SPClipPathReference &	getClipRef ()

SPMaskReference &	getMaskRef ()

std::optional< Geom::PathVector >	getClipPathVector () const
	Return the path vector of the clipping region.

std::optional< Geom::PathVector >	getClipPathVector (SPItem const *root) const
	Return the path vector of the clipping region, combined with the clipping regions of all groups containing this object up to and including root.

SPText const *	getClipTextObject () const
	Return the text object, IF and only if this item is clipped by a single SPText object.

SPAvoidRef &	getAvoidRef ()

bool	isLocked () const

void	setLocked (bool lock, bool recursive=false)

bool	isHidden () const

void	setHidden (bool hidden)

bool	isSensitive () const

void	setHighlight (Inkscape::Colors::Color color)

bool	isHighlightSet () const

virtual Inkscape::Colors::Color	highlight_color () const

bool	isEvaluated () const

void	setEvaluated (bool visible)

void	resetEvaluated ()

bool	unoptimized ()

bool	isHidden (unsigned display_key) const

bool	isExplicitlyHidden () const
	Returns something suitable for the ‘Hide’ checkbox in the Object Properties dialog box.

void	setExplicitlyHidden (bool val)
	Sets the display CSS property to ‘hidden’ if val is true, otherwise makes it unset.

void	setCenter (Geom::Point const &object_centre)
	Sets the transform_center_x and transform_center_y properties to retain the rotation center.

bool	updateCenterIfSet (Geom::Point const &center)

void	unsetCenter ()

bool	isCenterSet () const

Geom::Point	getCenter (bool ensure_uptodate=true) const

void	scaleCenter (Geom::Scale const &sc)

bool	isVisibleAndUnlocked () const

bool	isVisibleAndUnlocked (unsigned display_key) const

Geom::Affine	getRelativeTransform (SPObject const *obj) const

bool	raiseOne ()

bool	lowerOne ()

void	raiseToTop ()

void	lowerToBottom ()

SPGroup *	getParentGroup () const
	Return the parent, only if it's a group object.

void	moveTo (SPItem *target, bool intoafter)
	Move this SPItem into or after another SPItem in the doc.

sigc::connection	connectTransformed (sigc::slot< void(Geom::Affine const , SPItem )> slot)

Geom::OptRect	geometricBounds (Geom::Affine const &transform=Geom::identity()) const
	Get item's geometric bounding box in this item's coordinate system.

Geom::OptRect	visualBounds (Geom::Affine const &transform=Geom::identity(), bool wfilter=true, bool wclip=true, bool wmask=true) const
	Get item's visual bounding box in this item's coordinate system.

Geom::OptRect	bounds (BBoxType type, Geom::Affine const &transform=Geom::identity()) const

Geom::OptRect	documentGeometricBounds () const
	Get item's geometric bbox in document coordinate system.

Geom::OptRect	documentVisualBounds () const
	Get item's visual bbox in document coordinate system.

Geom::OptRect	documentBounds (BBoxType type) const

Geom::OptRect	documentPreferredBounds () const

Geom::OptRect	desktopGeometricBounds () const
	Get item's geometric bbox in desktop coordinate system.

Geom::OptRect	desktopVisualBounds () const
	Get item's visual bbox in desktop coordinate system.

Geom::OptRect	desktopPreferredBounds () const

Geom::OptRect	desktopBounds (BBoxType type) const

unsigned int	pos_in_parent () const

char *	detailedDescription () const
	Returns a string suitable for status bar, formatted in pango markup language.

bool	isFiltered () const
	Returns true if the item is filtered, false otherwise.

SPObject *	isInMask () const

SPObject *	isInClipPath () const

void	invoke_print (SPPrintContext *ctx)

Inkscape::DrawingItem *	invoke_show (Inkscape::Drawing &drawing, unsigned int key, unsigned int flags)

void	invoke_hide (unsigned int key)

void	invoke_hide_except (unsigned key, const std::vector< SPItem const * > &to_keep)
	Invoke hide on all non-group items, except for the list of items to keep.

void	getSnappoints (std::vector< Inkscape::SnapCandidatePoint > &p, Inkscape::SnapPreferences const *snapprefs=nullptr) const

void	adjust_pattern (Geom::Affine const &postmul, bool set=false, PaintServerTransform=TRANSFORM_BOTH)

void	adjust_hatch (Geom::Affine const &postmul, bool set=false, PaintServerTransform=TRANSFORM_BOTH)

void	adjust_gradient (Geom::Affine const &postmul, bool set=false)

void	adjust_clip (Geom::Affine const &postmul, bool set=false)

void	remove_clip_transforms ()

void	adjust_stroke (double ex)

void	adjust_stroke_width_recursive (double ex)
	Recursively scale stroke width in item and its children by expansion.

void	freeze_stroke_width_recursive (bool freeze)

void	adjust_paint_recursive (Geom::Affine advertized_transform, Geom::Affine t_ancestors, PaintServerType type=GRADIENT)
	Recursively compensate pattern or gradient transform.

bool	collidesWith (Geom::PathVector const &shape) const
	Checks for visual collision with another item.

bool	collidesWith (SPItem const &other) const

void	doWriteTransform (Geom::Affine const &transform, Geom::Affine const *adv=nullptr, bool compensate=true)
	Set a new transform on an object.

void	set_item_transform (Geom::Affine const &transform_matrix)
	Sets item private transform (not propagated to repr), without compensating stroke widths, gradients, patterns as sp_item_write_transform does.

Inkscape::DrawingItem *	get_arenaitem (unsigned key) const
	Return the arenaitem corresponding to the given item in the display with the given key.

Geom::Affine	i2doc_affine () const
	Returns the accumulated transformation of the item and all its ancestors, including root's viewport.

Geom::Affine	i2dt_affine () const
	Returns the transformation from item to desktop coords.

void	set_i2d_affine (Geom::Affine const &transform)

Geom::Affine	dt2i_affine () const
	Returns the transformation from desktop to item coords.

bool	isExpanded () const

void	setExpanded (bool expand)

void	rotate_rel (Geom::Rotate const &rotation)

void	scale_rel (Geom::Scale const &scale)

void	skew_rel (double skewX, double skewY)

void	move_rel (Geom::Translate const &tr)

virtual Geom::Affine	set_transform (Geom::Affine const &transform)

virtual void	removeTransformsRecursively (SPObject const *root)

virtual void	convert_to_guides () const

Public Member Functions inherited from SPObject
	SPObject ()
	Constructor, sets all attributes to default values.

	SPObject (SPObject const &)=delete

SPObject &	operator= (SPObject const &)=delete

	~SPObject () override
	Destructor, frees the used memory and unreferences a potential successor of the object.

char const *	getId () const
	Returns the objects current ID string.

void	getIds (std::set< std::string > &ret) const
	Accumulate this id and all it's descendants ids.

std::string	getUrl () const
	Get the id in a URL format.

Inkscape::XML::Node *	getRepr ()
	Returns the XML representation of tree.

Inkscape::XML::Node const *	getRepr () const
	Returns the XML representation of tree.

void	releaseReferences ()
	Cleans up an SPObject, releasing its references and requesting that references to it be released.

sigc::connection	connectRelease (sigc::slot< void(SPObject *)> slot)
	Connects to the release request signal.

bool	isSiblingOf (SPObject const *object) const

virtual void	getLinked (std::vector< SPObject * > &objects, LinkedObjectNature direction=LinkedObjectNature::ANY) const
	Get objects which are linked to this object as either a source or a target.

std::vector< SPObject * >	getLinked (LinkedObjectNature direction=LinkedObjectNature::ANY) const
	Get objects which are linked, like above.

bool	isAncestorOf (SPObject const *object) const
	True if object is non-NULL and this is some in/direct parent of object.

SPObject const *	nearestCommonAncestor (SPObject const *object) const
	Returns youngest object being parent to this and object.

SPObject const *	getTopAncestorNonLayer () const
	Returns ancestor non layer.

SPObject *	getNext ()

SPObject *	getPrev ()
	Returns previous object in sibling list or NULL.

bool	hasChildren () const

SPObject *	firstChild ()

SPObject const *	firstChild () const

SPObject *	lastChild ()

SPObject const *	lastChild () const

SPObject *	nthChild (unsigned index)

SPObject const *	nthChild (unsigned index) const

std::vector< SPObject * >	childList (bool add_ref, Action action=ActionGeneral)
	Retrieves the children as a std vector object, optionally ref'ing the children in the process, if add_ref is specified.

std::vector< SPObject * >	ancestorList (bool root_to_tip)
	Retrieves a list of ancestors of the object, as an easy to use vector.

SPObject *	appendChildRepr (Inkscape::XML::Node *repr)
	Append repr as child of this object.

char const *	label () const
	Gets the author-visible label property for the object or a default if no label is defined.

char const *	defaultLabel () const
	Returns a default label property for this object.

void	setLabel (char const *label)
	Sets the author-visible label for this object.

char *	title () const
	Returns the title of this object, or NULL if there is none.

bool	setTitle (char const *title, bool verbatim=false)
	Sets the title of this object.

char *	desc () const
	Returns the description of this object, or NULL if there is none.

bool	setDesc (char const *desc, bool verbatim=false)
	Sets the description of this object.

Glib::ustring	getExportFilename () const
	Get and set the exportable filename on this object.

void	setExportFilename (Glib::ustring filename)

Geom::Point	getExportDpi () const
	Get and set the exported DPI for this objet, if available.

void	setExportDpi (Geom::Point dpi)

CollectionPolicy	collectionPolicy () const
	Set the policy under which this object will be orphan-collected.

void	setCollectionPolicy (CollectionPolicy policy)
	Sets the orphan-collection policy in effect for this object.

void	requestOrphanCollection ()
	Requests a later automatic call to collectOrphan().

void	collectOrphan ()
	Unconditionally delete the object if it is not referenced.

void	hrefObject (SPObject *owner=nullptr)
	Increase weak refcount.

void	unhrefObject (SPObject *owner=nullptr)
	Decrease weak refcount.

bool	isReferenced ()
	Check if object is referenced by any other object.

void	deleteObject (bool propagate, bool propagate_descendants)
	Deletes an object, unparenting it from its parent.

void	deleteObject (bool propagate=true)
	Deletes on object.

void	cropToObject (SPObject *except)
	Removes all children except for the given object, it's children and it's ancesstors.

void	cropToObjects (std::vector< SPObject * > except_objects)
	Removes objects which are not related to given list of objects.

void	getObjectsExcept (std::vector< SPObject * > &objects, const std::vector< SPObject * > &except)
	Get all child objects except for any in the list.

void	getLinkedRecursive (std::vector< SPObject * > &objects, LinkedObjectNature direction=LinkedObjectNature::ANY) const
	Grows the input list with all linked items recursively in both child nodes and links of links.

sigc::connection	connectDelete (sigc::slot< void(SPObject *)> slot)
	Connects a slot to be called when an object is deleted.

sigc::connection	connectPositionChanged (sigc::slot< void(SPObject *)> slot)

SPObject *	successor ()
	Returns the object which supercedes this one (if any).

void	setSuccessor (SPObject *successor)
	Indicates that another object supercedes this one.

void	setTmpSuccessor (SPObject *tmpsuccessor)
	Indicates that another object supercedes temporaty this one.

void	unsetTmpSuccessor ()
	Unset object supercedes.

void	fixTmpSuccessors ()
	Fix temporary successors in duple stamp.

Inkscape::XML::Node *	updateRepr (unsigned int flags=SP_OBJECT_WRITE_EXT)
	Updates the object's repr based on the object's state.

Inkscape::XML::Node *	updateRepr (Inkscape::XML::Document doc, Inkscape::XML::Node repr, unsigned int flags)
	Updates the given repr based on the object's state.

void	requestDisplayUpdate (unsigned int flags)
	Queues an deferred update of this object's display.

void	updateDisplay (SPCtx *ctx, unsigned int flags)
	Updates the object's display immediately.

void	requestModified (unsigned int flags)
	Requests that a modification notification signal be emitted later (e.g.

void	emitModified (unsigned int flags)
	Emits the MODIFIED signal with the object's flags.

sigc::connection	connectModified (sigc::slot< void(SPObject *, unsigned int)> slot)
	Connects to the modification notification signal.

void	_sendDeleteSignalRecursive ()
	Sends the delete signal to all children of this object recursively.

void	_updateTotalHRefCount (int increment)
	Adds increment to _total_hrefcount of object and its parents.

void	_requireSVGVersion (unsigned major, unsigned minor)

void	_requireSVGVersion (Inkscape::Version version)
	Lifts SVG version of all root objects to version.

void	attach (SPObject object, SPObject prev)
	Put object into object tree, under parent, and behind prev; also update object's XML space.

void	reorder (SPObject obj, SPObject prev)
	In list of object's children, move object behind prev.

void	detach (SPObject *object)
	Remove object from parent's children, release and unref it.

SPObject *	get_child_by_repr (Inkscape::XML::Node *repr)
	Return object's child whose node pointer equals repr.

void	invoke_build (SPDocument document, Inkscape::XML::Node repr, unsigned int cloned)

int	getIntAttribute (char const *key, int def)

unsigned	getPosition ()

char const *	getAttribute (char const *name) const

void	appendChild (Inkscape::XML::Node *child)

void	addChild (Inkscape::XML::Node child, Inkscape::XML::Node prev=nullptr)

void	setKeyValue (SPAttr key, char const *value)
	Call virtual set() function of object.

void	setAttribute (Inkscape::Util::const_char_ptr key, Inkscape::Util::const_char_ptr value)

void	setAttributeDouble (Inkscape::Util::const_char_ptr key, double value)

void	setAttributeOrRemoveIfEmpty (Inkscape::Util::const_char_ptr key, Inkscape::Util::const_char_ptr value)

void	readAttr (char const *key)
	Read value of key attribute from XML node into object.

void	readAttr (SPAttr keyid)

char const *	getTagName () const

void	removeAttribute (char const *key)

void	setCSS (SPCSSAttr css, char const attr)

void	changeCSS (SPCSSAttr css, char const attr)

bool	storeAsDouble (char const key, double val) const

virtual void	read_content ()

void	recursivePrintTree (unsigned level=0)

void	objectTrace (std::string const &, bool in=true, unsigned flags=0)

std::string	generate_unique_id (char const *default_id=nullptr) const
	Generate a document-wide unique id for this object.

Public Attributes
void *	originalPath
	will be a livarot Path, just don't declare it here to please the gcc linker FIXME what?

char *	original
	SVG description of the source path.

float	rad
	offset radius

bool	knotSet
	for interactive setting of the radius

Geom::Point	knot

bool	sourceDirty

bool	isUpdating

char *	sourceHref

SPUseReference *	sourceRef

Inkscape::XML::Node *	sourceRepr
	the repr associated with that id

SPItem *	sourceObject

sigc::connection	_modified_connection

sigc::connection	_delete_connection

sigc::connection	_changed_connection

sigc::connection	_transformed_connection

Public Attributes inherited from SPShape
bool	bbox_geom_cache_is_valid = false

bool	bbox_vis_cache_is_valid = false

Geom::Affine	bbox_geom_cache_transform

Geom::Affine	bbox_vis_cache_transform

Geom::OptRect	bbox_geom_cache

Geom::OptRect	bbox_vis_cache

SPMarker *	_marker [SP_MARKER_LOC_QTY]

sigc::connection	_release_connect [SP_MARKER_LOC_QTY]

sigc::connection	_modified_connect [SP_MARKER_LOC_QTY]

Public Attributes inherited from SPLPEItem
int	path_effects_enabled

PathEffectList *	path_effect_list

PathEffectSharedPtr	current_path_effect

std::vector< Inkscape::Display::TemporaryItem * >	lpe_helperpaths

bool	onsymbol = false

bool	lpe_initialized = false

Public Attributes inherited from SPItem
unsigned int	sensitive: 1

unsigned int	stop_paint: 1

unsigned	bbox_valid: 1

double	transform_center_x

double	transform_center_y

bool	freeze_stroke_width

bool	_is_expanded = false

Geom::Affine	transform

Geom::OptRect	doc_bbox

Geom::Rect	viewport

std::vector< std::pair< Glib::ustring, Glib::ustring > >	rootsatellites

std::vector< SPItemView >	views

sigc::signal< void(Geom::Affine const , SPItem )>	_transformed_signal

std::optional< Inkscape::Colors::Color >	_highlightColor

Public Attributes inherited from SPObject
unsigned int	cloned: 1

SPObject *	clone_original {nullptr}

unsigned int	uflags: 16

unsigned int	mflags: 16

SPIXmlSpace	xml_space

Glib::ustring	lang

unsigned int	hrefcount {0}

unsigned int	_total_hrefcount {0}

SPDocument *	document {nullptr}

SPObject *	parent {nullptr}

int	refCount {1}

std::list< SPObject * >	hrefList

SPStyle *	style
	Represents the style properties, whether from presentation attributes, the `style` attribute, or inherited.

SPStyle *	context_style
	Represents the style that should be used to resolve 'context-fill' and 'context-stroke'.

sigc::signal< void(SPObject *)>	_release_signal

sigc::signal< void(SPObject *)>	_delete_signal

sigc::signal< void(SPObject *)>	_position_changed_signal

sigc::signal< void(SPObject *, unsigned int)>	_modified_signal

SPObject *	_successor {nullptr}

SPObject *	_tmpsuccessor {nullptr}

CollectionPolicy	_collection_policy {SPObject::COLLECT_WITH_PARENT}

char *	_label {nullptr}

char *	_default_label {nullptr}

ChildrenList	children

Additional Inherited Members
Public Types inherited from SPItem
enum	BBoxType { APPROXIMATE_BBOX , GEOMETRIC_BBOX , VISUAL_BBOX }

enum	PaintServerType { PATTERN , HATCH , GRADIENT }

Public Types inherited from SPObject
enum	CollectionPolicy { COLLECT_WITH_PARENT , ALWAYS_COLLECT }

enum class	LinkedObjectNature { DEPENDENT = -1 , ANY = 0 , DEPENDENCY = 1 }

enum	Action { ActionGeneral , ActionBBox , ActionUpdate , ActionShow }

typedef Inkscape::Util::ForwardPointerIterator< SPObject, ParentIteratorStrategy >	ParentIterator

typedef Inkscape::Util::ForwardPointerIterator< SPObject const, ParentIteratorStrategy >	ConstParentIterator

using	ChildrenList = boost::intrusive::list< SPObject, boost::intrusive::member_hook< SPObject, ListHook, &SPObject::_child_hook > >

Static Public Member Functions inherited from SPItem
static unsigned int	display_key_new (unsigned numkeys)
	Allocates unique integer keys.

static unsigned	ensure_key (Inkscape::DrawingItem *di)
	Ensures that a drawing item's key is the first of a block of ITEM_KEY_SIZE keys, assigning it such a key if necessary.

Protected Types inherited from SPObject
typedef boost::intrusive::list_member_hook	ListHook

Protected Member Functions inherited from SPObject
virtual void	order_changed (Inkscape::XML::Node child, Inkscape::XML::Node old_repr, Inkscape::XML::Node *new_repr)

virtual void	tag_name_changed (gchar const oldname, gchar const newname)

Protected Attributes inherited from SPShape
std::optional< Geom::PathVector >	_curve_before_lpe

std::shared_ptr< Geom::PathVector const >	_curve

Protected Attributes inherited from SPObject
ListHook	_child_hook

Detailed Description

SPOffset class.

An offset is defined by curve and radius. The original curve is kept as a path in a sodipodi:original attribute. It's not possible to change the original curve.

SPOffset is a derivative of SPShape, much like the SPSpiral or SPRect. The goal is to have a source shape (= originalPath), an offset (= radius) and compute the offset of the source by the radius. To get it to work, one needs to know what the source is and what the radius is, and how it's stored in the xml representation. The object itself is a "path" element, to get lots of shape functionality for free. The source is the easy part: it's stored in a "inkscape:original" attribute in the path. In case of "linked" offset, as they've been dubbed, there is an additional "inkscape:href" that contains the id of an element of the svg. When built, the object will attach a listener vector to that object and rebuild the "inkscape:original" whenever the href'd object changes. This is of course grossly inefficient, and also does not react to changes to the href'd during context stuff (like changing the shape of a star by dragging control points) unless the path of that object is changed during the context (seems to be the case for SPEllipse). The computation of the offset is done in sp_offset_set_shape(), a function that is called whenever a change occurs to the offset (change of source or change of radius). just like the sp-star and other, this path derivative can make control points, or more precisely one control point, that's enough to define the radius (look in shape-editor-knotholders).

Definition at line 50 of file sp-offset.h.

Constructor & Destructor Documentation

◆ SPOffset()

SPOffset::SPOffset ( )

Definition at line 84 of file sp-offset.cpp.

References _changed_connection, Inkscape::URIReference::changedSignal(), isUpdating, knotSet, original, originalPath, rad, sourceDirty, sourceHref, sourceObject, sourceRef, sourceRepr, and sp_offset_href_changed().

◆ ~SPOffset()

SPOffset::~SPOffset ( )

override

Definition at line 101 of file sp-offset.cpp.

References _changed_connection, _delete_connection, _modified_connection, _transformed_connection, and sourceRef.

Member Function Documentation

◆ build()

void SPOffset::build	(	SPDocument *	document,
		Inkscape::XML::Node *	repr
	)

overridevirtual

Reimplemented from SPLPEItem.

Definition at line 110 of file sp-offset.cpp.

References Inkscape::XML::Node::attribute(), SPShape::build(), SPObject::document, SPObject::getRepr(), INKSCAPE_ORIGINAL, INKSCAPE_RADIUS, SPObject::readAttr(), SPObject::removeAttribute(), SPObject::repr, SPObject::setAttribute(), and XLINK_HREF.

◆ description()

gchar * SPOffset::description ( ) const

overridevirtual

Reimplemented from SPItem.

Definition at line 331 of file sp-offset.cpp.

References rad.

◆ displayName()

const char * SPOffset::displayName ( ) const

overridevirtual

The item's type name as a translated human string.

Translated string for UI display.

Reimplemented from SPItem.

Definition at line 319 of file sp-offset.cpp.

References sourceHref.

◆ release()

void SPOffset::release ( )

overridevirtual

Reimplemented from SPLPEItem.

Definition at line 191 of file sp-offset.cpp.

References _changed_connection, Inkscape::URIReference::detach(), original, originalPath, SPShape::release(), sourceHref, sourceRef, and sp_offset_quit_listening().

◆ set()

void SPOffset::set	(	SPAttr	key,
		char const *	value
	)

overridevirtual

Reimplemented from SPLPEItem.

Definition at line 215 of file sp-offset.cpp.

References Inkscape::URIReference::attach(), Inkscape::URIReference::detach(), INKSCAPE_HREF, INKSCAPE_ORIGINAL, INKSCAPE_RADIUS, isUpdating, knotSet, original, originalPath, rad, refresh_offset_source(), SPObject::requestDisplayUpdate(), SPShape::set(), SODIPODI_ORIGINAL, SODIPODI_RADIUS, sourceDirty, sourceHref, sourceRef, sp_offset_quit_listening(), sp_svg_length_read_computed_absolute(), sp_svg_read_pathv(), and XLINK_HREF.

◆ set_shape()

void SPOffset::set_shape ( )

overridevirtual

Reimplemented from SPShape.

Definition at line 337 of file sp-offset.cpp.

References Inkscape::XML::Node::attribute(), SPShape::bbox(), Shape::bottomY, butt_straight, Shape::CalcBBox(), Path::Convert(), Path::ConvertEvenLines(), Shape::ConvertToForme(), Shape::ConvertToShape(), Path::ConvertWithBackData(), SPShape::curve(), Geom::Affine::descrim(), SPItem::documentVisualBounds(), Path::Fill(), fill_positive, SPObject::getRepr(), join_round, Shape::leftX, Shape::MakeOffset(), offset, orig, originalPath, Path::OutsideOutline(), Path::PolylineBoundingBox(), rad, Shape::Reset(), Shape::rightX, Path::SetBackData(), SPShape::setCurveBeforeLPE(), SPShape::setCurveInsync(), Path::Simplify(), size, sp_svg_read_pathv(), Path::SubPaths(), Path::Surface(), Shape::topY, SPItem::transform, and use_slow_but_correct_offset_method.

Referenced by update(), and write().

◆ snappoints()

void SPOffset::snappoints	(	std::vector< Inkscape::SnapCandidatePoint > &	p,
		Inkscape::SnapPreferences const *	snapprefs
	)		const

overridevirtual

Reimplemented from SPItem.

Definition at line 658 of file sp-offset.cpp.

References SPShape::snappoints().

◆ tag()

int SPOffset::tag ( ) const

inlineoverridevirtual

Reimplemented from SPLPEItem.

Definition at line 54 of file sp-offset.h.

References tag_of.

◆ typeName()

const char * SPOffset::typeName ( ) const

overridevirtual

The item's type name, not node tag name.

NOT translated.

Returns: The item's type name (default: 'item')

Reimplemented from SPItem.

Definition at line 327 of file sp-offset.cpp.

◆ update()

void SPOffset::update	(	SPCtx *	ctx,
		unsigned int	flags
	)

overridevirtual

Reimplemented from SPLPEItem.

Definition at line 300 of file sp-offset.cpp.

References isUpdating, refresh_offset_source(), set_shape(), sourceDirty, and SPShape::update().

◆ write()

Inkscape::XML::Node * SPOffset::write	(	Inkscape::XML::Document *	xml_doc,
		Inkscape::XML::Node *	repr,
		unsigned	flags
	)

override

Todo:: Fixme: we may replace these attributes by inkscape:offset="cx cy exp revo rad arg t0"

Definition at line 161 of file sp-offset.cpp.

References SPShape::_curve, Inkscape::XML::Document::createElement(), original, rad, SPObject::repr, set_shape(), Inkscape::XML::Node::setAttribute(), Inkscape::XML::Node::setAttributeSvgDouble(), sourceHref, sp_svg_write_path(), and SPShape::write().

Member Data Documentation

◆ _changed_connection

sigc::connection SPOffset::_changed_connection

Definition at line 74 of file sp-offset.h.

Referenced by release(), SPOffset(), and ~SPOffset().

◆ _delete_connection

sigc::connection SPOffset::_delete_connection

Definition at line 73 of file sp-offset.h.

Referenced by ~SPOffset().

◆ _modified_connection

sigc::connection SPOffset::_modified_connection

Definition at line 72 of file sp-offset.h.

Referenced by ~SPOffset().

◆ _transformed_connection

sigc::connection SPOffset::_transformed_connection

Definition at line 75 of file sp-offset.h.

Referenced by ~SPOffset().

◆ isUpdating

bool SPOffset::isUpdating

Definition at line 65 of file sp-offset.h.

Referenced by set(), SPOffset(), and update().

◆ knot

Geom::Point SPOffset::knot

Definition at line 62 of file sp-offset.h.

◆ knotSet

bool SPOffset::knotSet

for interactive setting of the radius

Definition at line 61 of file sp-offset.h.

Referenced by set(), and SPOffset().

◆ original

char* SPOffset::original

SVG description of the source path.

Definition at line 57 of file sp-offset.h.

Referenced by release(), set(), SPOffset(), and write().

◆ originalPath

void* SPOffset::originalPath

will be a livarot Path, just don't declare it here to please the gcc linker FIXME what?

Definition at line 56 of file sp-offset.h.

Referenced by release(), set(), set_shape(), and SPOffset().

◆ rad

float SPOffset::rad

offset radius

Definition at line 58 of file sp-offset.h.

Referenced by _ungroup_compensate_source_transform(), description(), set(), set_shape(), SPOffset(), and write().

◆ sourceDirty

bool SPOffset::sourceDirty

Definition at line 64 of file sp-offset.h.

Referenced by set(), sp_offset_move_compensate(), SPOffset(), and update().

◆ sourceHref

char* SPOffset::sourceHref

Definition at line 67 of file sp-offset.h.

Referenced by displayName(), release(), set(), SPOffset(), and write().

◆ sourceObject

SPItem* SPOffset::sourceObject

Definition at line 70 of file sp-offset.h.

Referenced by SPOffset().

◆ sourceRef

SPUseReference* SPOffset::sourceRef

Definition at line 68 of file sp-offset.h.

Referenced by release(), set(), SPOffset(), and ~SPOffset().

◆ sourceRepr

Inkscape::XML::Node* SPOffset::sourceRepr

the repr associated with that id

Definition at line 69 of file sp-offset.h.

Referenced by SPOffset().

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

/builds/inkscape/inkscape/src/object/sp-offset.h
/builds/inkscape/inkscape/src/object/sp-offset.cpp

Public Member Functions

Public Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ SPOffset()

◆ ~SPOffset()

Member Function Documentation

◆ build()

◆ description()

◆ displayName()

◆ release()

◆ set()

◆ set_shape()

◆ snappoints()

◆ tag()

◆ typeName()

◆ update()

◆ write()

Member Data Documentation

◆ _changed_connection

◆ _delete_connection

◆ _modified_connection

◆ _transformed_connection

◆ isUpdating

◆ knot

◆ knotSet

◆ original

◆ originalPath

◆ rad

◆ sourceDirty

◆ sourceHref

◆ sourceObject

◆ sourceRef

◆ sourceRepr