#define __SHAPE_EDITOR_CPP__ /* * Inkscape::ShapeEditor * * Authors: * bulia byak <buliabyak@users.sf.net> * */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include <string.h> #include <glibmm/i18n.h> #include "sp-object.h" #include "sp-item.h" #include "live_effects/lpeobject.h" #include "selection.h" #include "desktop.h" #include "document.h" #include "desktop-handles.h" #include "knotholder.h" #include "live_effects/parameter/point.h" #include "nodepath.h" #include "xml/node-event-vector.h" #include "preferences.h" #include "object-edit.h" #include "style.h" #include "display/curve.h" #include <2geom/pathvector.h> #include "shape-editor.h" ShapeEditorsCollective::ShapeEditorsCollective(SPDesktop */*dt*/) { } ShapeEditorsCollective::~ShapeEditorsCollective() { } void ShapeEditorsCollective::update_statusbar() { //!!! move from nodepath: sp_nodepath_update_statusbar but summing for all nodepaths } ShapeEditor::ShapeEditor(SPDesktop *dt) { this->desktop = dt; this->grab_node = -1; this->nodepath = NULL; this->knotholder = NULL; this->hit = false; this->knotholder_listener_attached_for = NULL; this->nodepath_listener_attached_for = NULL; } ShapeEditor::~ShapeEditor() { unset_item(SH_KNOTHOLDER); unset_item(SH_NODEPATH); } void ShapeEditor::unset_item(SubType type, bool keep_knotholder) { Inkscape::XML::Node *old_repr = NULL; switch (type) { case SH_NODEPATH: if (this->nodepath) { old_repr = this->nodepath->repr; if (old_repr && old_repr == nodepath_listener_attached_for) { sp_repr_remove_listener_by_data(old_repr, this); Inkscape::GC::release(old_repr); nodepath_listener_attached_for = NULL; } this->grab_node = -1; delete this->nodepath; this->nodepath = NULL; } break; case SH_KNOTHOLDER: if (this->knotholder) { old_repr = this->knotholder->repr; if (old_repr && old_repr == knotholder_listener_attached_for) { sp_repr_remove_listener_by_data(old_repr, this); Inkscape::GC::release(old_repr); knotholder_listener_attached_for = NULL; } if (!keep_knotholder) { delete this->knotholder; this->knotholder = NULL; } } break; } } bool ShapeEditor::has_nodepath () { return (this->nodepath != NULL); } bool ShapeEditor::has_knotholder () { return (this->knotholder != NULL); } void ShapeEditor::update_knotholder () { if (this->knotholder) this->knotholder->update_knots(); } bool ShapeEditor::has_local_change (SubType type) { switch (type) { case SH_NODEPATH: return (this->nodepath && this->nodepath->local_change); case SH_KNOTHOLDER: return (this->knotholder && this->knotholder->local_change != 0); default: g_assert_not_reached(); } } void ShapeEditor::decrement_local_change (SubType type) { switch (type) { case SH_NODEPATH: if (this->nodepath && this->nodepath->local_change > 0) { this->nodepath->local_change--; } break; case SH_KNOTHOLDER: if (this->knotholder) { this->knotholder->local_change = FALSE; } break; default: g_assert_not_reached(); } } const SPItem *ShapeEditor::get_item (SubType type) { const SPItem *item = NULL; switch (type) { case SH_NODEPATH: if (this->has_nodepath()) { item = this->nodepath->item; } break; case SH_KNOTHOLDER: if (this->has_knotholder()) { item = this->knotholder->getItem(); } break; } return item; } GList *ShapeEditor::save_nodepath_selection () { if (this->nodepath) return ::save_nodepath_selection (this->nodepath); return NULL; } void ShapeEditor::restore_nodepath_selection (GList *saved) { if (this->nodepath && saved) ::restore_nodepath_selection (this->nodepath, saved); } bool ShapeEditor::nodepath_edits_repr_key(gchar const *name) { if (nodepath && name) { return ( !strcmp(name, nodepath->repr_key) || !strcmp(name, nodepath->repr_nodetypes_key) ); } return false; } void ShapeEditor::shapeeditor_event_attr_changed(gchar const *name) { gboolean changed_np = FALSE; gboolean changed_kh = FALSE; if (has_nodepath() && nodepath_edits_repr_key(name)) { changed_np = !has_local_change(SH_NODEPATH); decrement_local_change(SH_NODEPATH); } if (changed_np) { GList *saved = NULL; if (has_nodepath()) { saved = save_nodepath_selection(); } reset_item(SH_NODEPATH); if (has_nodepath() && saved) { restore_nodepath_selection(saved); g_list_free (saved); } } if (has_knotholder()) { changed_kh = !has_local_change(SH_KNOTHOLDER); decrement_local_change(SH_KNOTHOLDER); if (changed_kh) { // this can happen if an LPEItem's knotholder handle was dragged, in which case we want // to keep the knotholder; in all other cases (e.g., if the LPE itself changes) we delete it reset_item(SH_KNOTHOLDER, !strcmp(name, "d")); } } update_statusbar(); //TODO: get_container()->update_statusbar(); } static void shapeeditor_event_attr_changed(Inkscape::XML::Node */*repr*/, gchar const *name, gchar const */*old_value*/, gchar const */*new_value*/, bool /*is_interactive*/, gpointer data) { g_assert(data); ShapeEditor *sh = ((ShapeEditor *) data); sh->shapeeditor_event_attr_changed(name); } static Inkscape::XML::NodeEventVector shapeeditor_repr_events = { NULL, /* child_added */ NULL, /* child_removed */ shapeeditor_event_attr_changed, NULL, /* content_changed */ NULL /* order_changed */ }; void ShapeEditor::set_item(SPItem *item, SubType type, bool keep_knotholder) { // this happens (and should only happen) when for an LPEItem having both knotholder and // nodepath the knotholder is adapted; in this case we don't want to delete the knotholder // since this freezes the handles unset_item(type, keep_knotholder); this->grab_node = -1; if (item) { Inkscape::XML::Node *repr; switch(type) { case SH_NODEPATH: if (SP_IS_LPE_ITEM(item)) { Inkscape::Preferences *prefs = Inkscape::Preferences::get(); this->nodepath = sp_nodepath_new(desktop, item, (prefs->getBool("/tools/nodes/show_handles", true))); } if (this->nodepath) { this->nodepath->shape_editor = this; // setting new listener repr = SP_OBJECT_REPR(item); if (repr != nodepath_listener_attached_for) { Inkscape::GC::anchor(repr); sp_repr_add_listener(repr, &shapeeditor_repr_events, this); nodepath_listener_attached_for = repr; } } break; case SH_KNOTHOLDER: if (!this->knotholder) { // only recreate knotholder if none is present this->knotholder = sp_item_knot_holder(item, desktop); } if (this->knotholder) { this->knotholder->update_knots(); // setting new listener repr = this->knotholder->repr; if (repr != knotholder_listener_attached_for) { Inkscape::GC::anchor(repr); sp_repr_add_listener(repr, &shapeeditor_repr_events, this); knotholder_listener_attached_for = repr; } } break; } } } /** Please note that this function only works for path parameters. * All other parameters probably will crash Inkscape! */ void ShapeEditor::set_item_lpe_path_parameter(SPItem *item, LivePathEffectObject *lpeobject, const char * key) { unset_item(SH_NODEPATH); this->grab_node = -1; if (lpeobject) { Inkscape::Preferences *prefs = Inkscape::Preferences::get(); this->nodepath = sp_nodepath_new( desktop, lpeobject, (prefs->getInt("/tools/nodes/show_handles", true)), key, item); if (this->nodepath) { this->nodepath->shape_editor = this; // setting new listener Inkscape::XML::Node *repr = SP_OBJECT_REPR(lpeobject); if (repr && repr != nodepath_listener_attached_for) { Inkscape::GC::anchor(repr); sp_repr_add_listener(repr, &shapeeditor_repr_events, this); nodepath_listener_attached_for = repr; } } } } /** FIXME: This thing is only called when the item needs to be updated in response to repr change. Why not make a reload function in NodePath and in KnotHolder? */ void ShapeEditor::reset_item (SubType type, bool keep_knotholder) { switch (type) { case SH_NODEPATH: if ( (nodepath) && (IS_LIVEPATHEFFECT(nodepath->object)) ) { char * key = g_strdup(nodepath->repr_key); set_item_lpe_path_parameter(nodepath->item, LIVEPATHEFFECT(nodepath->object), key); // the above checks for nodepath, so it is indeed a path that we are editing g_free(key); } else { SPObject *obj = sp_desktop_document(desktop)->getObjectByRepr(nodepath_listener_attached_for); /// note that it is not certain that this is an SPItem; it could be a LivePathEffectObject. set_item(SP_ITEM(obj), SH_NODEPATH); } break; case SH_KNOTHOLDER: if ( knotholder ) { SPObject *obj = sp_desktop_document(desktop)->getObjectByRepr(knotholder_listener_attached_for); /// note that it is not certain that this is an SPItem; it could be a LivePathEffectObject. set_item(SP_ITEM(obj), SH_KNOTHOLDER, keep_knotholder); } break; } } void ShapeEditor::nodepath_destroyed () { this->nodepath = NULL; } void ShapeEditor::update_statusbar () { if (this->nodepath) sp_nodepath_update_statusbar(this->nodepath); } bool ShapeEditor::is_over_stroke (Geom::Point event_p, bool remember) { if (!this->nodepath) return false; // no stroke in knotholder const SPItem *item = get_item(SH_NODEPATH); //Translate click point into proper coord system this->curvepoint_doc = desktop->w2d(event_p); this->curvepoint_doc *= sp_item_dt2i_affine(item); SPCurve *curve = this->nodepath->curve; // not sure if np->curve is always up to date... Geom::PathVector const &pathv = curve->get_pathvector(); boost::optional<Geom::PathVectorPosition> pvpos = Geom::nearestPoint(pathv, this->curvepoint_doc); if (!pvpos) { g_print("Warning! Possible error?\n"); return false; } Geom::Point nearest = pathv[pvpos->path_nr].pointAt(pvpos->t); Geom::Point delta = nearest - this->curvepoint_doc; delta = desktop->d2w(delta); Inkscape::Preferences *prefs = Inkscape::Preferences::get(); double stroke_tolerance = (( !SP_OBJECT_STYLE(item)->stroke.isNone() ? desktop->current_zoom() * SP_OBJECT_STYLE (item)->stroke_width.computed * 0.5 * to_2geom(sp_item_i2d_affine(item)).descrim() : 0.0) + prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100)) / to_2geom(sp_item_i2d_affine(item)).descrim(); bool close = (Geom::L2 (delta) < stroke_tolerance); if (remember && close) { // calculate index for nodepath's representation. double int_part; double t = std::modf(pvpos->t, &int_part); unsigned int segment_index = (unsigned int)int_part + 1; for (unsigned int i = 0; i < pvpos->path_nr; ++i) { segment_index += pathv[i].size() + 1; if (pathv[i].closed()) segment_index += 1; } this->curvepoint_event[Geom::X] = (gint) event_p [Geom::X]; this->curvepoint_event[Geom::Y] = (gint) event_p [Geom::Y]; this->hit = true; this->grab_t = t; this->grab_node = segment_index; } return close; } void ShapeEditor::add_node_near_point() { if (this->nodepath) { sp_nodepath_add_node_near_point(this->nodepath, this->curvepoint_doc); } else if (this->knotholder) { // we do not add nodes in knotholder... yet } } void ShapeEditor::select_segment_near_point(bool toggle) { if (this->nodepath) { sp_nodepath_select_segment_near_point(this->nodepath, this->curvepoint_doc, toggle); } if (this->knotholder) { // we do not select segments in knotholder... yet? } } void ShapeEditor::cancel_hit() { this->hit = false; } bool ShapeEditor::hits_curve() { return (this->hit); } void ShapeEditor::curve_drag(gdouble eventx, gdouble eventy) { if (this->nodepath && !this->nodepath->straight_path) { if (this->grab_node == -1) // don't know which segment to drag return; // We round off the extra precision in the motion coordinates provided // by some input devices (like tablets). As we'll store the coordinates // as integers in curvepoint_event we need to do this rounding before // comparing them with the last coordinates from curvepoint_event. // See bug #1593499 for details. gint x = (gint) Inkscape::round(eventx); gint y = (gint) Inkscape::round(eventy); // The coordinates hasn't changed since the last motion event, abort if (this->curvepoint_event[Geom::X] == x && this->curvepoint_event[Geom::Y] == y) return; Geom::Point const delta_w(eventx - this->curvepoint_event[Geom::X], eventy - this->curvepoint_event[Geom::Y]); Geom::Point const delta_dt(this->desktop->w2d(delta_w)); sp_nodepath_curve_drag (this->nodepath, this->grab_node, this->grab_t, delta_dt); this->curvepoint_event[Geom::X] = x; this->curvepoint_event[Geom::Y] = y; } if (this->knotholder) { // we do not drag curve in knotholder } } void ShapeEditor::finish_drag() { if (this->nodepath && this->hit) { sp_nodepath_update_repr (this->nodepath, _("Drag curve")); } } void ShapeEditor::select_rect(Geom::Rect const &rect, bool add) { if (this->nodepath) { sp_nodepath_select_rect(this->nodepath, rect, add); } } bool ShapeEditor::has_selection() { if (this->nodepath) return this->nodepath->selected; return false; // so far, knotholder cannot have selection } void ShapeEditor::deselect() { if (this->nodepath) sp_nodepath_deselect(this->nodepath); } void ShapeEditor::add_node () { sp_node_selected_add_node(this->nodepath); } void ShapeEditor::delete_nodes () { sp_node_selected_delete(this->nodepath); } void ShapeEditor::delete_nodes_preserving_shape () { if (this->nodepath && this->nodepath->selected) { sp_node_delete_preserve(g_list_copy(this->nodepath->selected)); } } void ShapeEditor::delete_segment () { sp_node_selected_delete_segment(this->nodepath); } void ShapeEditor::set_node_type(int type) { sp_node_selected_set_type(this->nodepath, (Inkscape::NodePath::NodeType) type); } void ShapeEditor::break_at_nodes() { sp_node_selected_break(this->nodepath); } void ShapeEditor::join_nodes() { sp_node_selected_join(this->nodepath); } void ShapeEditor::join_segments() { sp_node_selected_join_segment(this->nodepath); } void ShapeEditor::duplicate_nodes() { sp_node_selected_duplicate(this->nodepath); } void ShapeEditor::set_type_of_segments(NRPathcode code) { sp_node_selected_set_line_type(this->nodepath, code); } void ShapeEditor::move_nodes_screen(SPDesktop *desktop, gdouble dx, gdouble dy) { sp_node_selected_move_screen(desktop, this->nodepath, dx, dy); } void ShapeEditor::move_nodes(gdouble dx, gdouble dy) { sp_node_selected_move(this->nodepath, dx, dy); } void ShapeEditor::rotate_nodes(gdouble angle, int which, bool screen) { if (this->nodepath) sp_nodepath_selected_nodes_rotate (this->nodepath, angle, which, screen); } void ShapeEditor::scale_nodes(gdouble const grow, int const which) { sp_nodepath_selected_nodes_scale(this->nodepath, grow, which); } void ShapeEditor::scale_nodes_screen(gdouble const grow, int const which) { sp_nodepath_selected_nodes_scale_screen(this->nodepath, grow, which); } void ShapeEditor::select_all (bool invert) { if (this->nodepath) sp_nodepath_select_all (this->nodepath, invert); } void ShapeEditor::select_all_from_subpath (bool invert) { if (this->nodepath) sp_nodepath_select_all_from_subpath (this->nodepath, invert); } void ShapeEditor::select_next () { if (this->nodepath) { sp_nodepath_select_next (this->nodepath); if (this->nodepath->numSelected() >= 1) { this->desktop->scroll_to_point(this->nodepath->singleSelectedCoords(), 1.0); } } } void ShapeEditor::select_prev () { if (this->nodepath) { sp_nodepath_select_prev (this->nodepath); if (this->nodepath->numSelected() >= 1) { this->desktop->scroll_to_point(this->nodepath->singleSelectedCoords(), 1.0); } } } void ShapeEditor::show_handles (bool show) { if (this->nodepath && !this->nodepath->straight_path) sp_nodepath_show_handles (this->nodepath, show); } void ShapeEditor::show_helperpath (bool show) { if (this->nodepath) sp_nodepath_show_helperpath (this->nodepath, show); } void ShapeEditor::flip (Geom::Dim2 axis, boost::optional<Geom::Point> center) { if (this->nodepath) sp_nodepath_flip (this->nodepath, axis, center); } void ShapeEditor::distribute (Geom::Dim2 axis) { if (this->nodepath) sp_nodepath_selected_distribute (this->nodepath, axis); } void ShapeEditor::align (Geom::Dim2 axis) { if (this->nodepath) sp_nodepath_selected_align (this->nodepath, axis); } /* 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 :