/** \file * Base class for visual SVG elements */ /* * Authors: * Lauris Kaplinski * bulia byak * Johan Engelen * Abhishek Sharma * Jon A. Cruz * * Copyright (C) 2001-2006 authors * Copyright (C) 2001 Ximian, Inc. * * Released under GNU GPL, read the file 'COPYING' for more information */ /** \class SPItem * * SPItem is an abstract base class for all graphic (visible) SVG nodes. It * is a subclass of SPObject, with great deal of specific functionality. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include "sp-item.h" #include "svg/svg.h" #include "print.h" #include "display/drawing-item.h" #include "attributes.h" #include "document.h" #include "uri.h" #include "inkscape.h" #include "desktop.h" #include "desktop-handles.h" #include "style.h" #include #include "sp-root.h" #include "sp-clippath.h" #include "sp-mask.h" #include "sp-rect.h" #include "sp-use.h" #include "sp-text.h" #include "sp-item-rm-unsatisfied-cns.h" #include "sp-pattern.h" #include "sp-paint-server.h" #include "sp-switch.h" #include "sp-guide-constraint.h" #include "gradient-chemistry.h" #include "preferences.h" #include "conn-avoid-ref.h" #include "conditions.h" #include "sp-filter-reference.h" #include "filter-chemistry.h" #include "sp-guide.h" #include "sp-title.h" #include "sp-desc.h" #include "util/find-last-if.h" #include "util/reverse-list.h" #include <2geom/rect.h> #include <2geom/affine.h> #include <2geom/transforms.h> #include "xml/repr.h" #include "extract-uri.h" #include "helper/geom.h" #include "live_effects/lpeobject.h" #include "live_effects/effect.h" #include "live_effects/lpeobject-reference.h" #define noSP_ITEM_DEBUG_IDLE static void sp_item_build (SPObject *object, SPDocument *document, Inkscape::XML::Node *repr); static void sp_item_release(SPObject *object); static void sp_item_set (SPObject *object, unsigned key, gchar const *value); static void sp_item_update (SPObject *object, SPCtx *ctx, guint flags); static Inkscape::XML::Node* sp_item_write (SPObject *object, Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags); static SPItemView* sp_item_view_list_remove(SPItemView *list, SPItemView *view); static gchar *sp_item_private_description(SPItem *item); static void sp_item_private_snappoints(SPItem const *item, std::vector &p, Inkscape::SnapPreferences const *snapprefs); G_DEFINE_TYPE(SPItem, sp_item, SP_TYPE_OBJECT); /** * SPItem vtable initialization. */ static void sp_item_class_init(SPItemClass *klass) { SPObjectClass *sp_object_class = SP_OBJECT_CLASS(klass); sp_object_class->build = sp_item_build; sp_object_class->release = sp_item_release; sp_object_class->set = sp_item_set; sp_object_class->update = sp_item_update; sp_object_class->write = sp_item_write; klass->description = sp_item_private_description; klass->snappoints = sp_item_private_snappoints; } /** * Callback for SPItem object initialization. */ static void sp_item_init(SPItem *item) { item->init(); } void SPItem::init() { sensitive = TRUE; bbox_valid = FALSE; transform_center_x = 0; transform_center_y = 0; _is_evaluated = true; _evaluated_status = StatusUnknown; transform = Geom::identity(); doc_bbox = Geom::OptRect(); freeze_stroke_width = false; display = NULL; clip_ref = new SPClipPathReference(this); clip_ref->changedSignal().connect(sigc::bind(sigc::ptr_fun(clip_ref_changed), this)); mask_ref = new SPMaskReference(this); mask_ref->changedSignal().connect(sigc::bind(sigc::ptr_fun(mask_ref_changed), this)); avoidRef = new SPAvoidRef(this); new (&constraints) std::vector(); new (&_transformed_signal) sigc::signal(); } bool SPItem::isVisibleAndUnlocked() const { return (!isHidden() && !isLocked()); } bool SPItem::isVisibleAndUnlocked(unsigned display_key) const { return (!isHidden(display_key) && !isLocked()); } bool SPItem::isLocked() const { for (SPObject const *o = this; o != NULL; o = o->parent) { if (SP_IS_ITEM(o) && !(SP_ITEM(o)->sensitive)) { return true; } } return false; } void SPItem::setLocked(bool locked) { setAttribute("sodipodi:insensitive", ( locked ? "1" : NULL )); updateRepr(); } bool SPItem::isHidden() const { if (!isEvaluated()) return true; return style->display.computed == SP_CSS_DISPLAY_NONE; } void SPItem::setHidden(bool hide) { style->display.set = TRUE; style->display.value = ( hide ? SP_CSS_DISPLAY_NONE : SP_CSS_DISPLAY_INLINE ); style->display.computed = style->display.value; style->display.inherit = FALSE; updateRepr(); } bool SPItem::isHidden(unsigned display_key) const { if (!isEvaluated()) return true; for ( SPItemView *view(display) ; view ; view = view->next ) { if ( view->key == display_key ) { g_assert(view->arenaitem != NULL); for ( Inkscape::DrawingItem *arenaitem = view->arenaitem ; arenaitem ; arenaitem = arenaitem->parent() ) { if (!arenaitem->visible()) { return true; } } return false; } } return true; } void SPItem::setEvaluated(bool evaluated) { _is_evaluated = evaluated; _evaluated_status = StatusSet; } void SPItem::resetEvaluated() { if ( StatusCalculated == _evaluated_status ) { _evaluated_status = StatusUnknown; bool oldValue = _is_evaluated; if ( oldValue != isEvaluated() ) { requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG); } } if ( StatusSet == _evaluated_status ) { if (SP_IS_SWITCH(parent)) { SP_SWITCH(parent)->resetChildEvaluated(); } } } bool SPItem::isEvaluated() const { if ( StatusUnknown == _evaluated_status ) { _is_evaluated = sp_item_evaluate(this); _evaluated_status = StatusCalculated; } return _is_evaluated; } /** * Returns something suitable for the `Hide' checkbox in the Object Properties dialog box. * Corresponds to setExplicitlyHidden. */ bool SPItem::isExplicitlyHidden() const { return (style->display.set && style->display.value == SP_CSS_DISPLAY_NONE); } /** * Sets the display CSS property to `hidden' if \a val is true, * otherwise makes it unset */ void SPItem::setExplicitlyHidden(bool val) { style->display.set = val; style->display.value = ( val ? SP_CSS_DISPLAY_NONE : SP_CSS_DISPLAY_INLINE ); style->display.computed = style->display.value; updateRepr(); } /** * Sets the transform_center_x and transform_center_y properties to retain the rotation centre */ void SPItem::setCenter(Geom::Point const &object_centre) { document->ensureUpToDate(); // FIXME this is seriously wrong Geom::OptRect bbox = desktopGeometricBounds(); if (bbox) { transform_center_x = object_centre[Geom::X] - bbox->midpoint()[Geom::X]; if (Geom::are_near(transform_center_x, 0)) // rounding error transform_center_x = 0; transform_center_y = object_centre[Geom::Y] - bbox->midpoint()[Geom::Y]; if (Geom::are_near(transform_center_y, 0)) // rounding error transform_center_y = 0; } } void SPItem::unsetCenter() { transform_center_x = 0; transform_center_y = 0; } bool SPItem::isCenterSet() { return (transform_center_x != 0 || transform_center_y != 0); } Geom::Point SPItem::getCenter() const { document->ensureUpToDate(); // FIXME this is seriously wrong Geom::OptRect bbox = desktopGeometricBounds(); if (bbox) { return bbox->midpoint() + Geom::Point (transform_center_x, transform_center_y); } else { return Geom::Point(0, 0); // something's wrong! } } namespace { bool is_item(SPObject const &object) { return SP_IS_ITEM(&object); } } void SPItem::raiseToTop() { using Inkscape::Algorithms::find_last_if; SPObject *topmost=find_last_if( next, NULL, &is_item ); if (topmost) { getRepr()->parent()->changeOrder( getRepr(), topmost->getRepr() ); } } void SPItem::raiseOne() { SPObject *next_higher=std::find_if( next, NULL, &is_item ); if (next_higher) { Inkscape::XML::Node *ref = next_higher->getRepr(); getRepr()->parent()->changeOrder(getRepr(), ref); } } void SPItem::lowerOne() { using Inkscape::Util::MutableList; using Inkscape::Util::reverse_list; MutableList next_lower=std::find_if( reverse_list( parent->firstChild(), this ), MutableList(), &is_item ); if (next_lower) { ++next_lower; Inkscape::XML::Node *ref = ( next_lower ? next_lower->getRepr() : NULL ); getRepr()->parent()->changeOrder(getRepr(), ref); } } void SPItem::lowerToBottom() { using Inkscape::Algorithms::find_last_if; using Inkscape::Util::MutableList; using Inkscape::Util::reverse_list; MutableList bottom=find_last_if( reverse_list( parent->firstChild(), this ), MutableList(), &is_item ); if (bottom) { ++bottom; Inkscape::XML::Node *ref = ( bottom ? bottom->getRepr() : NULL ); getRepr()->parent()->changeOrder(getRepr(), ref); } } /* * Move this SPItem into or after another SPItem in the doc * \param target - the SPItem to move into or after * \param intoafter - move to after the target (false), move inside (sublayer) of the target (true) */ void SPItem::moveTo(SPItem *target, gboolean intoafter) { Inkscape::XML::Node *target_ref = ( target ? target->getRepr() : NULL ); Inkscape::XML::Node *our_ref = getRepr(); gboolean first = FALSE; if (target_ref == our_ref) { // Move to ourself ignore return; } if (!target_ref) { // Assume move to the "first" in the top node, find the top node target_ref = our_ref; while (target_ref->parent() != target_ref->root()) { target_ref = target_ref->parent(); } first = TRUE; } if (intoafter) { // Move this inside of the target at the end our_ref->parent()->removeChild(our_ref); target_ref->addChild(our_ref, NULL); } else if (target_ref->parent() != our_ref->parent()) { // Change in parent, need to remove and add our_ref->parent()->removeChild(our_ref); target_ref->parent()->addChild(our_ref, target_ref); } else if (!first) { // Same parent, just move our_ref->parent()->changeOrder(our_ref, target_ref); } if (first && parent) { // If "first" ensure it appears after the defs etc lowerToBottom(); return; } } static void sp_item_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr) { object->readAttr( "style" ); object->readAttr( "transform" ); object->readAttr( "clip-path" ); object->readAttr( "mask" ); object->readAttr( "sodipodi:insensitive" ); object->readAttr( "sodipodi:nonprintable" ); object->readAttr( "inkscape:transform-center-x" ); object->readAttr( "inkscape:transform-center-y" ); object->readAttr( "inkscape:connector-avoid" ); object->readAttr( "inkscape:connection-points" ); if ((SP_OBJECT_CLASS(sp_item_parent_class))->build) { (* (SP_OBJECT_CLASS(sp_item_parent_class))->build)(object, document, repr); } } static void sp_item_release(SPObject *object) { SPItem *item = SP_ITEM(object); // Note: do this here before the clip_ref is deleted, since calling // ensureUpToDate() for triggered routing may reference // the deleted clip_ref. delete item->avoidRef; // we do NOT disconnect from the changed signal of those before deletion. // The destructor will call *_ref_changed with NULL as the new value, // which will cause the hide() function to be called. delete item->clip_ref; delete item->mask_ref; if ((SP_OBJECT_CLASS(sp_item_parent_class))->release) { (SP_OBJECT_CLASS(sp_item_parent_class))->release(object); } while (item->display) { item->display = sp_item_view_list_remove(item->display, item->display); } item->_transformed_signal.~signal(); } static void sp_item_set(SPObject *object, unsigned key, gchar const *value) { SPItem *item = SP_ITEM(object); switch (key) { case SP_ATTR_TRANSFORM: { Geom::Affine t; if (value && sp_svg_transform_read(value, &t)) { item->set_item_transform(t); } else { item->set_item_transform(Geom::identity()); } break; } case SP_PROP_CLIP_PATH: { gchar *uri = extract_uri(value); if (uri) { try { item->clip_ref->attach(Inkscape::URI(uri)); } catch (Inkscape::BadURIException &e) { g_warning("%s", e.what()); item->clip_ref->detach(); } g_free(uri); } else { item->clip_ref->detach(); } break; } case SP_PROP_MASK: { gchar *uri = extract_uri(value); if (uri) { try { item->mask_ref->attach(Inkscape::URI(uri)); } catch (Inkscape::BadURIException &e) { g_warning("%s", e.what()); item->mask_ref->detach(); } g_free(uri); } else { item->mask_ref->detach(); } break; } case SP_ATTR_SODIPODI_INSENSITIVE: item->sensitive = !value; for (SPItemView *v = item->display; v != NULL; v = v->next) { v->arenaitem->setSensitive(item->sensitive); } break; case SP_ATTR_CONNECTOR_AVOID: item->avoidRef->setAvoid(value); break; case SP_ATTR_TRANSFORM_CENTER_X: if (value) { item->transform_center_x = g_strtod(value, NULL); } else { item->transform_center_x = 0; } object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); break; case SP_ATTR_TRANSFORM_CENTER_Y: if (value) { item->transform_center_y = g_strtod(value, NULL); } else { item->transform_center_y = 0; } object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); break; case SP_PROP_SYSTEM_LANGUAGE: case SP_PROP_REQUIRED_FEATURES: case SP_PROP_REQUIRED_EXTENSIONS: { item->resetEvaluated(); // pass to default handler } default: if (SP_ATTRIBUTE_IS_CSS(key)) { sp_style_read_from_object(object->style, object); object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG); } else { if ((SP_OBJECT_CLASS(sp_item_parent_class))->set) { (* (SP_OBJECT_CLASS(sp_item_parent_class))->set)(object, key, value); } } break; } } void SPItem::clip_ref_changed(SPObject *old_clip, SPObject *clip, SPItem *item) { item->bbox_valid = FALSE; // force a re-evaluation if (old_clip) { SPItemView *v; /* Hide clippath */ for (v = item->display; v != NULL; v = v->next) { SP_CLIPPATH(old_clip)->hide(v->arenaitem->key()); } } if (SP_IS_CLIPPATH(clip)) { Geom::OptRect bbox = item->geometricBounds(); for (SPItemView *v = item->display; v != NULL; v = v->next) { if (!v->arenaitem->key()) { v->arenaitem->setKey(SPItem::display_key_new(3)); } Inkscape::DrawingItem *ai = SP_CLIPPATH(clip)->show( v->arenaitem->drawing(), v->arenaitem->key()); v->arenaitem->setClip(ai); SP_CLIPPATH(clip)->setBBox(v->arenaitem->key(), bbox); clip->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); } } } void SPItem::mask_ref_changed(SPObject *old_mask, SPObject *mask, SPItem *item) { if (old_mask) { /* Hide mask */ for (SPItemView *v = item->display; v != NULL; v = v->next) { sp_mask_hide(SP_MASK(old_mask), v->arenaitem->key()); } } if (SP_IS_MASK(mask)) { Geom::OptRect bbox = item->geometricBounds(); for (SPItemView *v = item->display; v != NULL; v = v->next) { if (!v->arenaitem->key()) { v->arenaitem->setKey(SPItem::display_key_new(3)); } Inkscape::DrawingItem *ai = sp_mask_show(SP_MASK(mask), v->arenaitem->drawing(), v->arenaitem->key()); v->arenaitem->setMask(ai); sp_mask_set_bbox(SP_MASK(mask), v->arenaitem->key(), bbox); mask->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); } } } static void sp_item_update(SPObject *object, SPCtx *ctx, guint flags) { SPItem *item = SP_ITEM(object); if ((SP_OBJECT_CLASS(sp_item_parent_class))->update) { (* (SP_OBJECT_CLASS(sp_item_parent_class))->update)(object, ctx, flags); } // any of the modifications defined in sp-object.h might change bbox, // so we invalidate it unconditionally item->bbox_valid = FALSE; if (flags & (SP_OBJECT_CHILD_MODIFIED_FLAG | SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG)) { if (flags & SP_OBJECT_MODIFIED_FLAG) { for (SPItemView *v = item->display; v != NULL; v = v->next) { v->arenaitem->setTransform(item->transform); } } SPClipPath *clip_path = item->clip_ref ? item->clip_ref->getObject() : NULL; SPMask *mask = item->mask_ref ? item->mask_ref->getObject() : NULL; if ( clip_path || mask ) { Geom::OptRect bbox = item->geometricBounds(); if (clip_path) { for (SPItemView *v = item->display; v != NULL; v = v->next) { clip_path->setBBox(v->arenaitem->key(), bbox); } } if (mask) { for (SPItemView *v = item->display; v != NULL; v = v->next) { sp_mask_set_bbox(mask, v->arenaitem->key(), bbox); } } } if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) { for (SPItemView *v = item->display; v != NULL; v = v->next) { v->arenaitem->setOpacity(SP_SCALE24_TO_FLOAT(object->style->opacity.value)); v->arenaitem->setVisible(!item->isHidden()); } } } /* Update bounding box data used by filters */ if (item->style->filter.set && item->display) { Geom::OptRect item_bbox = item->geometricBounds(); SPItemView *itemview = item->display; do { if (itemview->arenaitem) itemview->arenaitem->setItemBounds(item_bbox); } while ( (itemview = itemview->next) ); } // Update libavoid with item geometry (for connector routing). if (item->avoidRef) item->avoidRef->handleSettingChange(); } static Inkscape::XML::Node* sp_item_write(SPObject *const object, Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags) { SPItem *item = SP_ITEM(object); // in the case of SP_OBJECT_WRITE_BUILD, the item should always be newly created, // so we need to add any children from the underlying object to the new repr if (flags & SP_OBJECT_WRITE_BUILD) { GSList *l = NULL; for (SPObject *child = object->firstChild(); child != NULL; child = child->next ) { if (SP_IS_TITLE(child) || SP_IS_DESC(child)) { Inkscape::XML::Node *crepr = child->updateRepr(xml_doc, NULL, flags); if (crepr) { l = g_slist_prepend (l, crepr); } } } while (l) { repr->addChild((Inkscape::XML::Node *) l->data, NULL); Inkscape::GC::release((Inkscape::XML::Node *) l->data); l = g_slist_remove (l, l->data); } } else { for (SPObject *child = object->firstChild() ; child != NULL; child = child->next ) { if (SP_IS_TITLE(child) || SP_IS_DESC(child)) { child->updateRepr(flags); } } } gchar *c = sp_svg_transform_write(item->transform); repr->setAttribute("transform", c); g_free(c); if (flags & SP_OBJECT_WRITE_EXT) { repr->setAttribute("sodipodi:insensitive", ( item->sensitive ? NULL : "true" )); if (item->transform_center_x != 0) sp_repr_set_svg_double (repr, "inkscape:transform-center-x", item->transform_center_x); else repr->setAttribute ("inkscape:transform-center-x", NULL); if (item->transform_center_y != 0) sp_repr_set_svg_double (repr, "inkscape:transform-center-y", item->transform_center_y); else repr->setAttribute ("inkscape:transform-center-y", NULL); } if (item->clip_ref){ if (item->clip_ref->getObject()) { const gchar *value = g_strdup_printf ("url(%s)", item->clip_ref->getURI()->toString()); repr->setAttribute ("clip-path", value); g_free ((void *) value); } } if (item->mask_ref){ if (item->mask_ref->getObject()) { const gchar *value = g_strdup_printf ("url(%s)", item->mask_ref->getURI()->toString()); repr->setAttribute ("mask", value); g_free ((void *) value); } } if ((SP_OBJECT_CLASS(sp_item_parent_class))->write) { (SP_OBJECT_CLASS(sp_item_parent_class))->write(object, xml_doc, repr, flags); } return repr; } /** * Get item's geometric bounding box in this item's coordinate system. * * The geometric bounding box includes only the path, disregarding all style attributes. */ Geom::OptRect SPItem::geometricBounds(Geom::Affine const &transform) const { Geom::OptRect bbox; // call the subclass method if ((SP_ITEM_CLASS(G_OBJECT_GET_CLASS(this)))->bbox) { bbox = (SP_ITEM_CLASS(G_OBJECT_GET_CLASS(this)))->bbox(this, transform, SPItem::GEOMETRIC_BBOX); } return bbox; } /** * Get item's visual bounding box in this item's coordinate system. * * The visual bounding box includes the stroke and the filter region. */ Geom::OptRect SPItem::visualBounds(Geom::Affine const &transform) const { using Geom::X; using Geom::Y; Geom::OptRect bbox; if ( style && style->filter.href && style->getFilter() && SP_IS_FILTER(style->getFilter())) { // call the subclass method if ((SP_ITEM_CLASS(G_OBJECT_GET_CLASS(this)))->bbox) { bbox = (SP_ITEM_CLASS(G_OBJECT_GET_CLASS(this)))->bbox(this, Geom::identity(), SPItem::VISUAL_BBOX); } SPFilter *filter = SP_FILTER(style->getFilter()); // default filer area per the SVG spec: SVGLength x, y, w, h; Geom::Point minp, maxp; x.set(SVGLength::PERCENT, -0.10, 0); y.set(SVGLength::PERCENT, -0.10, 0); w.set(SVGLength::PERCENT, 1.20, 0); h.set(SVGLength::PERCENT, 1.20, 0); // if area is explicitly set, override: if (filter->x._set) x = filter->x; if (filter->y._set) y = filter->y; if (filter->width._set) w = filter->width; if (filter->height._set) h = filter->height; double len_x = bbox ? bbox->width() : 0; double len_y = bbox ? bbox->height() : 0; x.update(12, 6, len_x); y.update(12, 6, len_y); w.update(12, 6, len_x); h.update(12, 6, len_y); if (filter->filterUnits == SP_FILTER_UNITS_OBJECTBOUNDINGBOX && bbox) { minp[X] = bbox->left() + x.computed * (x.unit == SVGLength::PERCENT ? 1.0 : len_x); maxp[X] = minp[X] + w.computed * (w.unit == SVGLength::PERCENT ? 1.0 : len_x); minp[Y] = bbox->top() + y.computed * (y.unit == SVGLength::PERCENT ? 1.0 : len_y); maxp[Y] = minp[Y] + h.computed * (h.unit == SVGLength::PERCENT ? 1.0 : len_y); } else if (filter->filterUnits == SP_FILTER_UNITS_USERSPACEONUSE) { minp[X] = x.computed; maxp[X] = minp[X] + w.computed; minp[Y] = y.computed; maxp[Y] = minp[Y] + h.computed; } bbox = Geom::OptRect(minp, maxp); *bbox *= transform; } else { // call the subclass method if ((SP_ITEM_CLASS(G_OBJECT_GET_CLASS(this)))->bbox) { bbox = (SP_ITEM_CLASS(G_OBJECT_GET_CLASS(this)))->bbox(this, transform, SPItem::VISUAL_BBOX); } } if (clip_ref->getObject()) { bbox.intersectWith(SP_CLIPPATH(clip_ref->getObject())->geometricBounds(transform)); } return bbox; } Geom::OptRect SPItem::bounds(BBoxType type, Geom::Affine const &transform) const { if (type == GEOMETRIC_BBOX) { return geometricBounds(transform); } else { return visualBounds(transform); } } /** Get item's geometric bbox in document coordinate system. * Document coordinates are the default coordinates of the root element: * the origin is at the top left, X grows to the right and Y grows downwards. */ Geom::OptRect SPItem::documentGeometricBounds() const { return geometricBounds(i2doc_affine()); } /// Get item's visual bbox in document coordinate system. Geom::OptRect SPItem::documentVisualBounds() const { if (!bbox_valid) { doc_bbox = visualBounds(i2doc_affine()); bbox_valid = true; } return doc_bbox; } Geom::OptRect SPItem::documentBounds(BBoxType type) const { if (type == GEOMETRIC_BBOX) { return documentGeometricBounds(); } else { return documentVisualBounds(); } } /** Get item's geometric bbox in desktop coordinate system. * Desktop coordinates should be user defined. Currently they are hardcoded: * origin is at bottom left, X grows to the right and Y grows upwards. */ Geom::OptRect SPItem::desktopGeometricBounds() const { return geometricBounds(i2dt_affine()); } /// Get item's visual bbox in desktop coordinate system. Geom::OptRect SPItem::desktopVisualBounds() const { /// @fixme hardcoded desktop transform Geom::Affine m = Geom::Scale(1, -1) * Geom::Translate(0, document->getHeight()); Geom::OptRect ret = documentVisualBounds(); if (ret) *ret *= m; return ret; } Geom::OptRect SPItem::desktopPreferredBounds() const { if (Inkscape::Preferences::get()->getInt("/tools/bounding_box") == 0) { return desktopBounds(SPItem::VISUAL_BBOX); } else { return desktopBounds(SPItem::GEOMETRIC_BBOX); } } Geom::OptRect SPItem::desktopBounds(BBoxType type) const { if (type == GEOMETRIC_BBOX) { return desktopGeometricBounds(); } else { return desktopVisualBounds(); } } unsigned SPItem::pos_in_parent() { g_assert(parent != NULL); g_assert(SP_IS_OBJECT(parent)); SPObject *object = this; unsigned pos=0; for ( SPObject *iter = parent->firstChild() ; iter ; iter = iter->next) { if ( iter == object ) { return pos; } if (SP_IS_ITEM(iter)) { pos++; } } g_assert_not_reached(); return 0; } static void sp_item_private_snappoints(SPItem const * /*item*/, std::vector &/*p*/, Inkscape::SnapPreferences const * /*snapprefs*/) { /* This will only be called if the derived class doesn't override this. * see for example sp_genericellipse_snappoints in sp-ellipse.cpp * We don't know what shape we could be dealing with here, so we'll just * do nothing */ } void SPItem::getSnappoints(std::vector &p, Inkscape::SnapPreferences const *snapprefs) const { // Get the snappoints of the item SPItemClass const &item_class = *SP_ITEM_CLASS(G_OBJECT_GET_CLASS(this)); if (item_class.snappoints) { item_class.snappoints(this, p, snapprefs); } // Get the snappoints at the item's center if (snapprefs != NULL && snapprefs->isTargetSnappable(Inkscape::SNAPTARGET_ROTATION_CENTER)) { p.push_back(Inkscape::SnapCandidatePoint(getCenter(), Inkscape::SNAPSOURCE_ROTATION_CENTER, Inkscape::SNAPTARGET_ROTATION_CENTER)); } // Get the snappoints of clipping paths and mask, if any std::list clips_and_masks; clips_and_masks.push_back(clip_ref->getObject()); clips_and_masks.push_back(mask_ref->getObject()); SPDesktop *desktop = inkscape_active_desktop(); for (std::list::const_iterator o = clips_and_masks.begin(); o != clips_and_masks.end(); ++o) { if (*o) { // obj is a group object, the children are the actual clippers for (SPObject *child = (*o)->children ; child ; child = child->next) { if (SP_IS_ITEM(child)) { std::vector p_clip_or_mask; // Please note the recursive call here! SP_ITEM(child)->getSnappoints(p_clip_or_mask, snapprefs); // Take into account the transformation of the item being clipped or masked for (std::vector::const_iterator p_orig = p_clip_or_mask.begin(); p_orig != p_clip_or_mask.end(); ++p_orig) { // All snappoints are in desktop coordinates, but the item's transformation is // in document coordinates. Hence the awkward construction below Geom::Point pt = desktop->dt2doc((*p_orig).getPoint()) * i2dt_affine(); p.push_back(Inkscape::SnapCandidatePoint(pt, (*p_orig).getSourceType(), (*p_orig).getTargetType())); } } } } } } void SPItem::invoke_print(SPPrintContext *ctx) { if ( !isHidden() ) { if ( reinterpret_cast(G_OBJECT_GET_CLASS(this))->print ) { if (!transform.isIdentity() || style->opacity.value != SP_SCALE24_MAX) { sp_print_bind(ctx, transform, SP_SCALE24_TO_FLOAT(style->opacity.value)); reinterpret_cast(G_OBJECT_GET_CLASS(this))->print(this, ctx); sp_print_release(ctx); } else { reinterpret_cast(G_OBJECT_GET_CLASS(this))->print(this, ctx); } } } } static gchar* sp_item_private_description(SPItem * /*item*/) { return g_strdup(_("Object")); } /** * Returns a string suitable for status bar, formatted in pango markup language. * * Must be freed by caller. */ gchar *SPItem::description() { if ((SP_ITEM_CLASS(G_OBJECT_GET_CLASS(this)))->description) { gchar *s = (SP_ITEM_CLASS(G_OBJECT_GET_CLASS(this)))->description(this); if (s && clip_ref->getObject()) { gchar *snew = g_strdup_printf (_("%s; clipped"), s); g_free (s); s = snew; } if (s && mask_ref->getObject()) { gchar *snew = g_strdup_printf (_("%s; masked"), s); g_free (s); s = snew; } if ( style && style->filter.href && style->filter.href->getObject() ) { const gchar *label = style->filter.href->getObject()->label(); gchar *snew = 0; if (label) { snew = g_strdup_printf (_("%s; filtered (%s)"), s, _(label)); } else { snew = g_strdup_printf (_("%s; filtered"), s); } g_free (s); s = snew; } return s; } g_assert_not_reached(); return NULL; } /** * Returns 1 if the item is filtered, 0 otherwise. Used with groups/lists to determine how many, or if any, are filtered * */ int SPItem::ifilt() { int retval=0; if ((SP_ITEM_CLASS(G_OBJECT_GET_CLASS(this)))->description) { if ( style && style->filter.href && style->filter.href->getObject() ) { retval=1; } } return retval; } /** * Allocates unique integer keys. * \param numkeys Number of keys required. * \return First allocated key; hence if the returned key is n * you can use n, n + 1, ..., n + (numkeys - 1) */ unsigned SPItem::display_key_new(unsigned numkeys) { static unsigned dkey = 0; dkey += numkeys; return dkey - numkeys; } Inkscape::DrawingItem *SPItem::invoke_show(Inkscape::Drawing &drawing, unsigned key, unsigned flags) { Inkscape::DrawingItem *ai = NULL; if ((SP_ITEM_CLASS(G_OBJECT_GET_CLASS(this)))->show) { ai = (SP_ITEM_CLASS(G_OBJECT_GET_CLASS(this)))->show(this, drawing, key, flags); } if (ai != NULL) { Geom::OptRect item_bbox = geometricBounds(); display = sp_item_view_new_prepend(display, this, flags, key, ai); ai->setTransform(transform); ai->setOpacity(SP_SCALE24_TO_FLOAT(style->opacity.value)); ai->setVisible(!isHidden()); ai->setSensitive(sensitive); if (clip_ref->getObject()) { SPClipPath *cp = clip_ref->getObject(); if (!display->arenaitem->key()) { display->arenaitem->setKey(display_key_new(3)); } int clip_key = display->arenaitem->key(); // Show and set clip Inkscape::DrawingItem *ac = cp->show(drawing, clip_key); ai->setClip(ac); // Update bbox, in case the clip uses bbox units SP_CLIPPATH(cp)->setBBox(clip_key, item_bbox); cp->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); } if (mask_ref->getObject()) { SPMask *mask = mask_ref->getObject(); if (!display->arenaitem->key()) { display->arenaitem->setKey(display_key_new(3)); } int mask_key = display->arenaitem->key(); // Show and set mask Inkscape::DrawingItem *ac = sp_mask_show(mask, drawing, mask_key); ai->setMask(ac); // Update bbox, in case the mask uses bbox units sp_mask_set_bbox(SP_MASK(mask), mask_key, item_bbox); mask->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); } ai->setData(this); ai->setItemBounds(item_bbox); } return ai; } void SPItem::invoke_hide(unsigned key) { if ((SP_ITEM_CLASS(G_OBJECT_GET_CLASS(this)))->hide) { (SP_ITEM_CLASS(G_OBJECT_GET_CLASS(this)))->hide(this, key); } SPItemView *ref = NULL; SPItemView *v = display; while (v != NULL) { SPItemView *next = v->next; if (v->key == key) { if (clip_ref->getObject()) { (clip_ref->getObject())->hide(v->arenaitem->key()); v->arenaitem->setClip(NULL); } if (mask_ref->getObject()) { sp_mask_hide(mask_ref->getObject(), v->arenaitem->key()); v->arenaitem->setMask(NULL); } if (!ref) { display = v->next; } else { ref->next = v->next; } delete v->arenaitem; g_free(v); } else { ref = v; } v = next; } } // Adjusters void SPItem::adjust_pattern (Geom::Affine const &postmul, bool set) { if (style && (style->fill.isPaintserver())) { SPObject *server = style->getFillPaintServer(); if ( SP_IS_PATTERN(server) ) { SPPattern *pattern = sp_pattern_clone_if_necessary(this, SP_PATTERN(server), "fill"); sp_pattern_transform_multiply(pattern, postmul, set); } } if (style && (style->stroke.isPaintserver())) { SPObject *server = style->getStrokePaintServer(); if ( SP_IS_PATTERN(server) ) { SPPattern *pattern = sp_pattern_clone_if_necessary(this, SP_PATTERN(server), "stroke"); sp_pattern_transform_multiply(pattern, postmul, set); } } } void SPItem::adjust_gradient( Geom::Affine const &postmul, bool set ) { if ( style && style->fill.isPaintserver() ) { SPPaintServer *server = style->getFillPaintServer(); if ( SP_IS_GRADIENT(server) ) { /** * \note Bbox units for a gradient are generally a bad idea because * with them, you cannot preserve the relative position of the * object and its gradient after rotation or skew. So now we * convert them to userspace units which are easy to keep in sync * just by adding the object's transform to gradientTransform. * \todo FIXME: convert back to bbox units after transforming with * the item, so as to preserve the original units. */ SPGradient *gradient = sp_gradient_convert_to_userspace( SP_GRADIENT(server), this, "fill" ); sp_gradient_transform_multiply( gradient, postmul, set ); } } if ( style && style->stroke.isPaintserver() ) { SPPaintServer *server = style->getStrokePaintServer(); if ( SP_IS_GRADIENT(server) ) { SPGradient *gradient = sp_gradient_convert_to_userspace( SP_GRADIENT(server), this, "stroke"); sp_gradient_transform_multiply( gradient, postmul, set ); } } } void SPItem::adjust_stroke( gdouble ex ) { if (freeze_stroke_width) { return; } SPStyle *style = this->style; if (style && !style->stroke.isNone() && !Geom::are_near(ex, 1.0, Geom::EPSILON)) { style->stroke_width.computed *= ex; style->stroke_width.set = TRUE; if ( style->stroke_dash.n_dash != 0 ) { for (int i = 0; i < style->stroke_dash.n_dash; i++) { style->stroke_dash.dash[i] *= ex; } style->stroke_dash.offset *= ex; } updateRepr(); } } /** * Find out the inverse of previous transform of an item (from its repr) */ static Geom::Affine sp_item_transform_repr (SPItem *item) { Geom::Affine t_old(Geom::identity()); gchar const *t_attr = item->getRepr()->attribute("transform"); if (t_attr) { Geom::Affine t; if (sp_svg_transform_read(t_attr, &t)) { t_old = t; } } return t_old; } /** * Recursively scale stroke width in \a item and its children by \a expansion. */ void SPItem::adjust_stroke_width_recursive(double expansion) { adjust_stroke (expansion); // A clone's child is the ghost of its original - we must not touch it, skip recursion if ( !SP_IS_USE(this) ) { for ( SPObject *o = children; o; o = o->getNext() ) { if (SP_IS_ITEM(o)) { SP_ITEM(o)->adjust_stroke_width_recursive(expansion); } } } } void SPItem::freeze_stroke_width_recursive(bool freeze) { freeze_stroke_width = freeze; // A clone's child is the ghost of its original - we must not touch it, skip recursion if ( !SP_IS_USE(this) ) { for ( SPObject *o = children; o; o = o->getNext() ) { if (SP_IS_ITEM(o)) { SP_ITEM(o)->freeze_stroke_width_recursive(freeze); } } } } /** * Recursively adjust rx and ry of rects. */ static void sp_item_adjust_rects_recursive(SPItem *item, Geom::Affine advertized_transform) { if (SP_IS_RECT (item)) { sp_rect_compensate_rxry (SP_RECT(item), advertized_transform); } for (SPObject *o = item->children; o != NULL; o = o->next) { if (SP_IS_ITEM(o)) sp_item_adjust_rects_recursive(SP_ITEM(o), advertized_transform); } } /** * Recursively compensate pattern or gradient transform. */ void SPItem::adjust_paint_recursive (Geom::Affine advertized_transform, Geom::Affine t_ancestors, bool is_pattern) { // _Before_ full pattern/gradient transform: t_paint * t_item * t_ancestors // _After_ full pattern/gradient transform: t_paint_new * t_item * t_ancestors * advertised_transform // By equating these two expressions we get t_paint_new = t_paint * paint_delta, where: Geom::Affine t_item = sp_item_transform_repr (this); Geom::Affine paint_delta = t_item * t_ancestors * advertized_transform * t_ancestors.inverse() * t_item.inverse(); // Within text, we do not fork gradients, and so must not recurse to avoid double compensation; // also we do not recurse into clones, because a clone's child is the ghost of its original - // we must not touch it if (!(this && (SP_IS_TEXT(this) || SP_IS_USE(this)))) { for (SPObject *o = children; o != NULL; o = o->next) { if (SP_IS_ITEM(o)) { // At the level of the transformed item, t_ancestors is identity; // below it, it is the accmmulated chain of transforms from this level to the top level SP_ITEM(o)->adjust_paint_recursive (advertized_transform, t_item * t_ancestors, is_pattern); } } } // We recursed into children first, and are now adjusting this object second; // this is so that adjustments in a tree are done from leaves up to the root, // and paintservers on leaves inheriting their values from ancestors could adjust themselves properly // before ancestors themselves are adjusted, probably differently (bug 1286535) if (is_pattern) { adjust_pattern(paint_delta); } else { adjust_gradient(paint_delta); } } void SPItem::adjust_livepatheffect (Geom::Affine const &postmul, bool set) { if ( SP_IS_LPE_ITEM(this) ) { SPLPEItem *lpeitem = SP_LPE_ITEM (this); if ( sp_lpe_item_has_path_effect(lpeitem) ) { sp_lpe_item_fork_path_effects_if_necessary(lpeitem); // now that all LPEs are forked_if_necessary, we can apply the transform PathEffectList effect_list = sp_lpe_item_get_effect_list(lpeitem); for (PathEffectList::iterator it = effect_list.begin(); it != effect_list.end(); ++it) { LivePathEffectObject *lpeobj = (*it)->lpeobject; if (lpeobj && lpeobj->get_lpe()) { Inkscape::LivePathEffect::Effect * effect = lpeobj->get_lpe(); effect->transform_multiply(postmul, set); } } } } } /** * Set a new transform on an object. * * Compensate for stroke scaling and gradient/pattern fill transform, if * necessary. Call the object's set_transform method if transforms are * stored optimized. Send _transformed_signal. Invoke _write method so that * the repr is updated with the new transform. */ void SPItem::doWriteTransform(Inkscape::XML::Node *repr, Geom::Affine const &transform, Geom::Affine const *adv, bool compensate) { g_return_if_fail(repr != NULL); // calculate the relative transform, if not given by the adv attribute Geom::Affine advertized_transform; if (adv != NULL) { advertized_transform = *adv; } else { advertized_transform = sp_item_transform_repr (this).inverse() * transform; } Inkscape::Preferences *prefs = Inkscape::Preferences::get(); if (compensate) { // recursively compensating for stroke scaling will not always work, because it can be scaled to zero or infinite // from which we cannot ever recover by applying an inverse scale; therefore we temporarily block any changes // to the strokewidth in such a case instead, and unblock these after the transformation // (as reported in https://bugs.launchpad.net/inkscape/+bug/825840/comments/4) if (!prefs->getBool("/options/transform/stroke", true)) { double const expansion = 1. / advertized_transform.descrim(); if (expansion < 1e-9 || expansion > 1e9) { freeze_stroke_width_recursive(true); // This will only work if the item has a set_transform method (in this method adjust_stroke() will be called) // We will still have to apply the inverse scaling to other items, not having a set_transform method // such as ellipses and stars // PS: We cannot use this freeze_stroke_width_recursive() trick in all circumstances. For example, it will // break pasting objects within their group (because in such a case the transformation of the group will affect // the strokewidth, and has to be compensated for. See https://bugs.launchpad.net/inkscape/+bug/959223/comments/10) } else { adjust_stroke_width_recursive(expansion); } } // recursively compensate rx/ry of a rect if requested if (!prefs->getBool("/options/transform/rectcorners", true)) { sp_item_adjust_rects_recursive(this, advertized_transform); } // recursively compensate pattern fill if it's not to be transformed if (!prefs->getBool("/options/transform/pattern", true)) { adjust_paint_recursive (advertized_transform.inverse(), Geom::identity(), true); } /// \todo FIXME: add the same else branch as for gradients below, to convert patterns to userSpaceOnUse as well /// recursively compensate gradient fill if it's not to be transformed if (!prefs->getBool("/options/transform/gradient", true)) { adjust_paint_recursive (advertized_transform.inverse(), Geom::identity(), false); } else { // this converts the gradient/pattern fill/stroke, if any, to userSpaceOnUse; we need to do // it here _before_ the new transform is set, so as to use the pre-transform bbox adjust_paint_recursive (Geom::identity(), Geom::identity(), false); } } // endif(compensate) gint preserve = prefs->getBool("/options/preservetransform/value", 0); Geom::Affine transform_attr (transform); if ( // run the object's set_transform (i.e. embed transform) only if: (SP_ITEM_CLASS(G_OBJECT_GET_CLASS(this)))->set_transform && // it does have a set_transform method !preserve && // user did not chose to preserve all transforms !clip_ref->getObject() && // the object does not have a clippath !mask_ref->getObject() && // the object does not have a mask !(!transform.isTranslation() && style && style->getFilter()) // the object does not have a filter, or the transform is translation (which is supposed to not affect filters) ) { transform_attr = (SP_ITEM_CLASS(G_OBJECT_GET_CLASS(this)))->set_transform(this, transform); if (freeze_stroke_width) { freeze_stroke_width_recursive(false); } } else { if (freeze_stroke_width) { freeze_stroke_width_recursive(false); if (compensate) { if (!prefs->getBool("/options/transform/stroke", true)) { // Recursively compensate for stroke scaling, depending on user preference // (As to why we need to do this, see the comment a few lines above near the freeze_stroke_width_recursive(true) call) double const expansion = 1. / advertized_transform.descrim(); adjust_stroke_width_recursive(expansion); } } } } set_item_transform(transform_attr); // Note: updateRepr comes before emitting the transformed signal since // it causes clone SPUse's copy of the original object to brought up to // date with the original. Otherwise, sp_use_bbox returns incorrect // values if called in code handling the transformed signal. updateRepr(); // send the relative transform with a _transformed_signal _transformed_signal.emit(&advertized_transform, this); } gint SPItem::emitEvent(SPEvent &event) { if ((SP_ITEM_CLASS(G_OBJECT_GET_CLASS(this)))->event) { return (SP_ITEM_CLASS(G_OBJECT_GET_CLASS(this)))->event(this, &event); } return FALSE; } /** * Sets item private transform (not propagated to repr), without compensating stroke widths, * gradients, patterns as sp_item_write_transform does. */ void SPItem::set_item_transform(Geom::Affine const &transform_matrix) { if (!Geom::are_near(transform_matrix, transform, 1e-18)) { transform = transform_matrix; /* The SP_OBJECT_USER_MODIFIED_FLAG_B is used to mark the fact that it's only a transformation. It's apparently not used anywhere else. */ requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_USER_MODIFIED_FLAG_B); sp_item_rm_unsatisfied_cns(*this); } } void SPItem::convert_item_to_guides() { // Use derived method if present ... if ((SP_ITEM_CLASS(G_OBJECT_GET_CLASS(this)))->convert_to_guides) { (*(SP_ITEM_CLASS(G_OBJECT_GET_CLASS(this)))->convert_to_guides)(this); } else { // .. otherwise simply place the guides around the item's bounding box convert_to_guides(); } } /** * \pre \a ancestor really is an ancestor (\>=) of \a object, or NULL. * ("Ancestor (\>=)" here includes as far as \a object itself.) */ Geom::Affine i2anc_affine(SPObject const *object, SPObject const *const ancestor) { Geom::Affine ret(Geom::identity()); g_return_val_if_fail(object != NULL, ret); /* stop at first non-renderable ancestor */ while ( object != ancestor && SP_IS_ITEM(object) ) { if (SP_IS_ROOT(object)) { ret *= SP_ROOT(object)->c2p; } else { ret *= SP_ITEM(object)->transform; } object = object->parent; } return ret; } Geom::Affine i2i_affine(SPObject const *src, SPObject const *dest) { g_return_val_if_fail(src != NULL && dest != NULL, Geom::identity()); SPObject const *ancestor = src->nearestCommonAncestor(dest); return i2anc_affine(src, ancestor) * i2anc_affine(dest, ancestor).inverse(); } Geom::Affine SPItem::getRelativeTransform(SPObject const *dest) const { return i2i_affine(this, dest); } /** * Returns the accumulated transformation of the item and all its ancestors, including root's viewport. * \pre (item != NULL) and SP_IS_ITEM(item). */ Geom::Affine SPItem::i2doc_affine() const { return i2anc_affine(this, NULL); } /** * Returns the transformation from item to desktop coords */ Geom::Affine SPItem::i2dt_affine() const { Geom::Affine ret; SPDesktop const *desktop = inkscape_active_desktop(); if ( desktop ) { ret = i2doc_affine() * desktop->doc2dt(); } else { // TODO temp code to prevent crashing on command-line launch: ret = i2doc_affine() * Geom::Scale(1, -1) * Geom::Translate(0, document->getHeight()); } return ret; } void SPItem::set_i2d_affine(Geom::Affine const &i2dt) { Geom::Affine dt2p; /* desktop to item parent transform */ if (parent) { dt2p = static_cast(parent)->i2dt_affine().inverse(); } else { SPDesktop *dt = inkscape_active_desktop(); dt2p = dt->dt2doc(); } Geom::Affine const i2p( i2dt * dt2p ); set_item_transform(i2p); } /** * should rather be named "sp_item_d2i_affine" to match "sp_item_i2d_affine" (or vice versa) */ Geom::Affine SPItem::dt2i_affine() const { /* fixme: Implement the right way (Lauris) */ return i2dt_affine().inverse(); } /* Item views */ SPItemView *SPItem::sp_item_view_new_prepend(SPItemView *list, SPItem *item, unsigned flags, unsigned key, Inkscape::DrawingItem *drawing_item) { g_assert(item != NULL); g_assert(SP_IS_ITEM(item)); g_assert(drawing_item != NULL); SPItemView *new_view = g_new(SPItemView, 1); new_view->next = list; new_view->flags = flags; new_view->key = key; new_view->arenaitem = drawing_item; return new_view; } static SPItemView* sp_item_view_list_remove(SPItemView *list, SPItemView *view) { SPItemView *ret = list; if (view == list) { ret = list->next; } else { SPItemView *prev; prev = list; while (prev->next != view) prev = prev->next; prev->next = view->next; } delete view->arenaitem; g_free(view); return ret; } /** * Return the arenaitem corresponding to the given item in the display * with the given key */ Inkscape::DrawingItem *SPItem::get_arenaitem(unsigned key) { for ( SPItemView *iv = display ; iv ; iv = iv->next ) { if ( iv->key == key ) { return iv->arenaitem; } } return NULL; } int sp_item_repr_compare_position(SPItem const *first, SPItem const *second) { return sp_repr_compare_position(first->getRepr(), second->getRepr()); } SPItem const *sp_item_first_item_child(SPObject const *obj) { return sp_item_first_item_child( const_cast(obj) ); } SPItem *sp_item_first_item_child(SPObject *obj) { SPItem *child = 0; for ( SPObject *iter = obj->firstChild() ; iter ; iter = iter->next ) { if ( SP_IS_ITEM(iter) ) { child = SP_ITEM(iter); break; } } return child; } void SPItem::convert_to_guides() { Inkscape::Preferences *prefs = Inkscape::Preferences::get(); int prefs_bbox = prefs->getInt("/tools/bounding_box", 0); Geom::OptRect bbox = (prefs_bbox == 0) ? desktopVisualBounds() : desktopGeometricBounds(); if (!bbox) { g_warning ("Cannot determine item's bounding box during conversion to guides.\n"); return; } std::list > pts; Geom::Point A((*bbox).min()); Geom::Point C((*bbox).max()); Geom::Point B(A[Geom::X], C[Geom::Y]); Geom::Point D(C[Geom::X], A[Geom::Y]); pts.push_back(std::make_pair(A, B)); pts.push_back(std::make_pair(B, C)); pts.push_back(std::make_pair(C, D)); pts.push_back(std::make_pair(D, A)); sp_guide_pt_pairs_to_guides(document, pts); } /* 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 :