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| -rw-r--r-- | src/object/object-set.h | 569 |
1 files changed, 569 insertions, 0 deletions
diff --git a/src/object/object-set.h b/src/object/object-set.h new file mode 100644 index 0000000..4bd7c17 --- /dev/null +++ b/src/object/object-set.h @@ -0,0 +1,569 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Multiindex container for selection + * + * Authors: + * Adrian Boguszewski + * Marc Jeanmougin + * + * Copyright (C) 2016 Adrian Boguszewski + * + * Released under GNU GPL v2+, read the file 'COPYING' for more information. + */ + +#ifndef INKSCAPE_PROTOTYPE_OBJECTSET_H +#define INKSCAPE_PROTOTYPE_OBJECTSET_H + +#include <string> +#include <unordered_map> + +#include <boost/multi_index_container.hpp> +#include <boost/multi_index/identity.hpp> +#include <boost/multi_index/sequenced_index.hpp> +#include <boost/multi_index/hashed_index.hpp> +#include <boost/multi_index/random_access_index.hpp> +#include <boost/range/adaptor/filtered.hpp> +#include <boost/range/adaptor/transformed.hpp> +#include <boost/range/sub_range.hpp> +#include <boost/range/any_range.hpp> +#include <boost/type_traits.hpp> +#include <boost/utility/enable_if.hpp> + +#include <sigc++/connection.h> + +#include <inkgc/gc-soft-ptr.h> + +#include "sp-object.h" +#include "sp-item.h" +#include "sp-item-group.h" +#include "desktop.h" +#include "document.h" + +enum BoolOpErrors { + DONE, + DONE_NO_PATH, + DONE_NO_ACTION, + ERR_TOO_LESS_PATHS_1, + ERR_TOO_LESS_PATHS_2, + ERR_NO_PATHS, + ERR_Z_ORDER +}; + +// boolean operation +enum bool_op +{ + bool_op_union, // A OR B + bool_op_inters, // A AND B + bool_op_diff, // A \ B + bool_op_symdiff, // A XOR B + bool_op_cut, // coupure (pleines) + bool_op_slice // coupure (contour) +}; +typedef enum bool_op BooleanOp; + +/** + * SiblingState enums are used to associate the current state + * while grabbing objects. + * Specifically used by ObjectSet.applyAffine() to manage transforms + * while dragging objects + */ +enum class SiblingState { + SIBLING_NONE, // no relation to item + SIBLING_CLONE_ORIGINAL, // moving both a clone and its original or any ancestor + SIBLING_OFFSET_SOURCE, // moving both an offset and its source + SIBLING_TEXT_PATH, // moving both a text-on-path and its path + SIBLING_TEXT_FLOW_FRAME, // moving both a flowtext and its frame + SIBLING_TEXT_SHAPE_INSIDE, // moving object containing sub object +}; + +class SPBox3D; +class Persp3D; + +namespace Inkscape { + +namespace XML { +class Node; +} + +struct hashed{}; +struct random_access{}; + +struct is_item { + bool operator()(SPObject* obj) { + return SP_IS_ITEM(obj); + } +}; + +struct is_group { + bool operator()(SPObject* obj) { + return SP_IS_GROUP(obj); + } +}; + +struct object_to_item { + typedef SPItem* result_type; + SPItem* operator()(SPObject* obj) const { + return SP_ITEM(obj); + } +}; + +struct object_to_node { + typedef XML::Node* result_type; + XML::Node* operator()(SPObject* obj) const { + return obj->getRepr(); + } +}; + +struct object_to_group { + typedef SPGroup* result_type; + SPGroup* operator()(SPObject* obj) const { + return SP_GROUP(obj); + } +}; + +typedef boost::multi_index_container< + SPObject*, + boost::multi_index::indexed_by< + boost::multi_index::sequenced<>, + boost::multi_index::random_access< + boost::multi_index::tag<random_access>>, + boost::multi_index::hashed_unique< + boost::multi_index::tag<hashed>, + boost::multi_index::identity<SPObject*>> + >> MultiIndexContainer; + +typedef boost::any_range< + SPObject*, + boost::random_access_traversal_tag, + SPObject* const&, + std::ptrdiff_t> SPObjectRange; + +class ObjectSet { +public: + enum CompareSize {HORIZONTAL, VERTICAL, AREA}; + typedef decltype(MultiIndexContainer().get<random_access>() | boost::adaptors::filtered(is_item()) | boost::adaptors::transformed(object_to_item())) SPItemRange; + typedef decltype(MultiIndexContainer().get<random_access>() | boost::adaptors::filtered(is_group()) | boost::adaptors::transformed(object_to_group())) SPGroupRange; + typedef decltype(MultiIndexContainer().get<random_access>() | boost::adaptors::filtered(is_item()) | boost::adaptors::transformed(object_to_node())) XMLNodeRange; + + ObjectSet(SPDesktop* desktop): _desktop(desktop) { + if (desktop) + _document = desktop->getDocument(); + }; + ObjectSet(SPDocument* doc): _desktop(nullptr), _document(doc) {}; + ObjectSet(): _desktop(nullptr), _document(nullptr) {}; // Used in spray-tool.h. + virtual ~ObjectSet(); + + void setDocument(SPDocument* doc){ + _document = doc; + } + + + /** + * Add an SPObject to the set of selected objects. + * + * @param obj the SPObject to add + * @param nosignal true if no signals should be sent + */ + bool add(SPObject* object, bool nosignal = false); + + /** + * Add an XML node's SPObject to the set of selected objects. + * + * @param the xml node of the item to add + */ + void add(XML::Node *repr); + + /** Add items from an STL iterator range to the selection. + * \param from the begin iterator + * \param to the end iterator + */ + template <typename InputIterator> + void add(InputIterator from, InputIterator to) { + for(auto it = from; it != to; ++it) { + _add(*it); + } + _emitChanged(); + } + + /** + * Removes an item from the set of selected objects. + * + * It is ok to call this method for an unselected item. + * + * @param item the item to unselect + * + * @return is success + */ + bool remove(SPObject* object); + + /** + * Returns true if the given object is selected. + */ + bool includes(SPObject *object, bool anyAncestor = false); + + /** + * Returns ancestor if the given object has ancestor selected. + */ + SPObject * includesAncestor(SPObject *object); + + /** + * Set the selection to a single specific object. + * + * @param obj the object to select + */ + void set(SPObject *object, bool persist_selection_context = false); + void set(XML::Node *repr); + /** + * Unselects all selected objects. + */ + void clear(); + + /** + * Returns size of the selection. + */ + int size(); + + /** + * Returns true if no items are selected. + */ + bool isEmpty(); + + /** + * Removes an item if selected, adds otherwise. + * + * @param item the item to unselect + */ + void toggle(SPObject *obj); + + /** + * Returns a single selected object. + * + * @return NULL unless exactly one object is selected + */ + SPObject *single(); + + /** + * Returns a single selected item. + * + * @return NULL unless exactly one object is selected + */ + SPItem *singleItem(); + + /** + * Returns the first selected item, returns nullptr if no items selected. + */ + SPItem *firstItem() const; + + /** + * Returns the last selected item, returns nullptr if no items selected. + */ + SPItem *lastItem() const; + + /** + * Returns the smallest item from this selection. + */ + SPItem *smallestItem(CompareSize compare); + + /** + * Returns the largest item from this selection. + */ + SPItem *largestItem(CompareSize compare); + + /** Returns the list of selected objects. */ + SPObjectRange objects(); + + /** Returns a range of selected SPItems. */ + SPItemRange items() { + return SPItemRange(_container.get<random_access>() + | boost::adaptors::filtered(is_item()) + | boost::adaptors::transformed(object_to_item())); + }; + + /** Returns a range of selected groups. */ + SPGroupRange groups() { + return SPGroupRange (_container.get<random_access>() + | boost::adaptors::filtered(is_group()) + | boost::adaptors::transformed(object_to_group())); + } + + /** Returns a range of the xml nodes of all selected objects. */ + XMLNodeRange xmlNodes() { + return XMLNodeRange(_container.get<random_access>() + | boost::adaptors::filtered(is_item()) + | boost::adaptors::transformed(object_to_node())); + } + + /** + * Returns a single selected object's xml node. + * + * @return NULL unless exactly one object is selected + */ + XML::Node *singleRepr(); + + /** + * The top-most item, or NULL if the selection is empty. + */ + XML::Node *topRepr() const; + + /** + * Selects exactly the specified objects. + * + * @param objs the objects to select + */ + template <class T> + typename boost::enable_if<boost::is_base_of<SPObject, T>, void>::type + setList(const std::vector<T*> &objs) { + _clear(); + addList(objs); + } + + /** + * Attempt to select all the items between two child items. Must have the same parent. + * + * @param obj_a - The first item, doesn't have to appear first in the list. + * @param obj_b - The last item, doesn't have to appear last in the list (optional) + * If selection already contains one item, will select from-to that. + * If not set, will use the lastItem selected in the list. + * + * @returns the number of items added. + */ + int setBetween(SPObject *obj_a, SPObject *obj_b = nullptr); + + /** + * Selects the objects with the same IDs as those in `list`. + * + * @todo How about adding `setIdList(std::vector<Glib::ustring> const &list)` + * + * @param list the repr list to add + */ + void setReprList(std::vector<XML::Node*> const &list); + + /** + * Assign IDs to selected objects that don't have an ID attribute + * Checks if the object's id attribute is NULL. If it is, assign it a unique ID + */ + void enforceIds(); + + /** + * Adds the specified objects to selection, without deselecting first. + * + * @param objs the objects to select + */ + template <class T> + typename boost::enable_if<boost::is_base_of<SPObject, T>, void>::type + addList(const std::vector<T*> &objs) { + for (auto obj: objs) { + if (!includes(obj)) { + add(obj, true); + } + } + _emitChanged(); + } + + /** Returns the bounding rectangle of the selection. */ + Geom::OptRect bounds(SPItem::BBoxType type) const; + Geom::OptRect visualBounds() const; + Geom::OptRect geometricBounds() const; + Geom::OptRect strokedBounds() const; + + /** + * Returns either the visual or geometric bounding rectangle of the selection, based on the + * preferences specified for the selector tool + */ + Geom::OptRect preferredBounds() const; + + /* Returns the bounding rectangle of the selectionin document coordinates.*/ + Geom::OptRect documentBounds(SPItem::BBoxType type) const; + + /** + * Returns the rotation/skew center of the selection. + */ + std::optional<Geom::Point> center() const; + + /** Returns a list of all perspectives which have a 3D box in the current selection. + (these may also be nested in groups) */ + std::list<Persp3D *> const perspList(); + + /** + * Returns a list of all 3D boxes in the current selection which are associated to @c + * persp. If @c pers is @c NULL, return all selected boxes. + */ + std::list<SPBox3D *> const box3DList(Persp3D *persp = nullptr); + + /** + * Returns the desktop the selection is bound to + * + * @return the desktop the selection is bound to, or NULL if in console mode + */ + SPDesktop *desktop() { return _desktop; } + + /** + * Returns the document the selection is bound to + * + * @return the document the selection is bound to, or NULL if in console mode + */ + SPDocument *document() { return _document; } + + //item groups operations + //in selection-chemistry.cpp + void deleteItems(); + void duplicate(bool suppressDone = false, bool duplicateLayer = false); + void clone(); + + /** + * @brief Unlink all directly selected clones. + * @param skip_undo If this is set to true the call to DocumentUndo::done is omitted. + * @return True if anything was unlinked, otherwise false. + */ + bool unlink(const bool skip_undo = false); + /** + * @brief Recursively unlink any clones present in the current selection, + * including clones which are used to clip other objects, groups of clones etc. + * @return true if anything was unlinked, otherwise false. + */ + bool unlinkRecursive(const bool skip_undo = false, const bool force = false); + void removeLPESRecursive(bool keep_paths); + void relink(); + void cloneOriginal(); + void cloneOriginalPathLPE(bool allow_transforms = false); + Inkscape::XML::Node* group(int type = 0); + void popFromGroup(); + void ungroup(bool skip_undo = false); + + //z-order management + //in selection-chemistry.cpp + void stackUp(bool skip_undo = false); + void raise(bool skip_undo = false); + void raiseToTop(bool skip_undo = false); + void stackDown(bool skip_undo = false); + void lower(bool skip_undo = false); + void lowerToBottom(bool skip_undo = false); + void toNextLayer(bool skip_undo = false); + void toPrevLayer(bool skip_undo = false); + void toLayer(SPObject *layer, bool skip_undo = false); + void toLayer(SPObject *layer, bool skip_undo, Inkscape::XML::Node *after); + + //clipboard management + //in selection-chemistry.cpp + void copy(); + void cut(); + void pasteStyle(); + void pasteSize(bool apply_x, bool apply_y); + void pasteSizeSeparately(bool apply_x, bool apply_y); + void pastePathEffect(); + + //path operations + //in path-chemistry.cpp + void combine(bool skip_undo = false, bool silent = false); + void breakApart(bool skip_undo = false, bool overlapping = true, bool silent = false); + void toCurves(bool skip_undo = false); + void toLPEItems(); + void pathReverse(); + + // path operations + // in path/path-object-set.cpp + bool strokesToPaths(bool legacy = false, bool skip_undo = false); + bool simplifyPaths(bool skip_undo = false); + + // Boolean operations + // in splivarot.cpp + bool pathUnion(const bool skip_undo = false, bool silent = false); + bool pathIntersect(const bool skip_undo = false, bool silent = false); + bool pathDiff(const bool skip_undo = false, bool silent = false); + bool pathSymDiff(const bool skip_undo = false, bool silent = false); + bool pathCut(const bool skip_undo = false, bool silent = false); + bool pathSlice(const bool skip_undo = false, bool silent = false); + + //Other path operations + //in selection-chemistry.cpp + void toMarker(bool apply = true); + void toGuides(); + void toSymbol(); + void unSymbol(); + void tile(bool apply = true); //"Object to Pattern" + void untile(); + void createBitmapCopy(); + void setMask(bool apply_clip_path, bool apply_to_layer = false, bool skip_undo = false); + void editMask(bool clip); + void unsetMask(const bool apply_clip_path, const bool skip_undo = false, + const bool delete_helper_group = true); + void setClipGroup(); + + // moves + // in selection-chemistry.cpp + void removeLPE(); + void removeFilter(); + void applyAffine(Geom::Affine const &affine, bool set_i2d=true,bool compensate=true, bool adjust_transf_center=true); + void removeTransform(); + void setScaleAbsolute(double, double, double, double); + void setScaleRelative(const Geom::Point&, const Geom::Scale&); + void rotateRelative(const Geom::Point&, double); + void skewRelative(const Geom::Point&, double, double); + void moveRelative(const Geom::Point &move, bool compensate = true); + void moveRelative(double dx, double dy); + void rotate90(bool ccw); + void rotate(double); + void rotateScreen(double); + void scaleGrow(double); + void scaleScreen(double); + void scale(double); + void move(double dx, double dy); + void moveScreen(double dx, double dy); + + // various + bool fitCanvas(bool with_margins, bool skip_undo = false); + void swapFillStroke(); + void fillBetweenMany(); + + SiblingState getSiblingState(SPItem *item); + void insertSiblingState(SPObject *object, SiblingState state); + void clearSiblingStates(); + +protected: + virtual void _connectSignals(SPObject* object) {}; + virtual void _releaseSignals(SPObject* object) {}; + virtual void _emitChanged(bool persist_selection_context = false); + void _add(SPObject* object); + void _clear(); + void _remove(SPObject* object); + bool _anyAncestorIsInSet(SPObject *object); + void _removeDescendantsFromSet(SPObject *object); + void _removeAncestorsFromSet(SPObject *object); + SPItem *_sizeistItem(bool sml, CompareSize compare); + SPObject *_getMutualAncestor(SPObject *object); + virtual void _add3DBoxesRecursively(SPObject *obj); + virtual void _remove3DBoxesRecursively(SPObject *obj); + + MultiIndexContainer _container; + GC::soft_ptr<SPDesktop> _desktop; + GC::soft_ptr<SPDocument> _document; + std::list<SPBox3D *> _3dboxes; + std::unordered_map<SPObject*, sigc::connection> _releaseConnections; + +private: + BoolOpErrors pathBoolOp(bool_op bop, const bool skip_undo, const bool checked = false, + const Glib::ustring icon_name = nullptr, const Glib::ustring description = "", + bool silent = false); + void _disconnect(SPObject* object); + std::map<SPObject *, SiblingState> _sibling_state; + +}; + +typedef ObjectSet::SPItemRange SPItemRange; +typedef ObjectSet::SPGroupRange SPGroupRange; +typedef ObjectSet::XMLNodeRange XMLNodeRange; + +} // namespace Inkscape + +#endif //INKSCAPE_PROTOTYPE_OBJECTSET_H + +/* + Local Variables: + mode:c++ + c-file-style:"stroustrup" + c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +)) + indent-tabs-mode:nil + fill-column:99 + End: +*/ +// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 : |