// SPDX-License-Identifier: GPL-2.0-or-later /* * 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 v2+, read the file 'COPYING' for more information. */ #include "sp-item.h" #include #include "bad-uri-exception.h" #include "svg/svg.h" #include "svg/svg-color.h" #include "print.h" #include "display/drawing-item.h" #include "attributes.h" #include "document.h" #include "inkscape.h" #include "desktop.h" #include "gradient-chemistry.h" #include "conn-avoid-ref.h" #include "conditions.h" #include "filter-chemistry.h" #include "sp-clippath.h" #include "sp-desc.h" #include "sp-guide.h" #include "sp-hatch.h" #include "sp-mask.h" #include "sp-pattern.h" #include "sp-rect.h" #include "sp-root.h" #include "sp-switch.h" #include "sp-text.h" #include "sp-textpath.h" #include "sp-title.h" #include "sp-use.h" #include "style.h" #include "snap-preferences.h" #include "snap-candidate.h" #include "extract-uri.h" #include "live_effects/lpeobject.h" #include "live_effects/effect.h" #include "live_effects/lpeobject-reference.h" #include "util/units.h" #define noSP_ITEM_DEBUG_IDLE //#define OBJECT_TRACE static SPItemView* sp_item_view_list_remove(SPItemView *list, SPItemView *view); SPItem::SPItem() : SPObject() { sensitive = TRUE; bbox_valid = FALSE; _highlightColor = 0; transform_center_x = 0; transform_center_y = 0; freeze_stroke_width = false; _is_evaluated = true; _evaluated_status = StatusUnknown; transform = Geom::identity(); // doc_bbox = Geom::OptRect(); display = nullptr; clip_ref = nullptr; mask_ref = nullptr; style->signal_fill_ps_changed.connect(sigc::bind(sigc::ptr_fun(fill_ps_ref_changed), this)); style->signal_stroke_ps_changed.connect(sigc::bind(sigc::ptr_fun(stroke_ps_ref_changed), this)); avoidRef = nullptr; } SPItem::~SPItem() = default; SPClipPath *SPItem::getClipObject() const { return clip_ref ? clip_ref->getObject() : nullptr; } SPMask *SPItem::getMaskObject() const { return mask_ref ? mask_ref->getObject() : nullptr; } SPMaskReference &SPItem::getMaskRef() { if (!mask_ref) { mask_ref = new SPMaskReference(this); mask_ref->changedSignal().connect(sigc::bind(sigc::ptr_fun(mask_ref_changed), this)); } return *mask_ref; } SPClipPathReference &SPItem::getClipRef() { if (!clip_ref) { clip_ref = new SPClipPathReference(this); clip_ref->changedSignal().connect(sigc::bind(sigc::ptr_fun(clip_ref_changed), this)); } return *clip_ref; } SPAvoidRef &SPItem::getAvoidRef() { if (!avoidRef) { avoidRef = new SPAvoidRef(this); } return *avoidRef; } 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 != nullptr; o = o->parent) { SPItem const *item = dynamic_cast(o); if (item && !(item->sensitive)) { return true; } } return false; } void SPItem::setLocked(bool locked) { setAttribute("sodipodi:insensitive", ( locked ? "1" : nullptr )); updateRepr(); document->_emitModified(); } 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 != nullptr); for ( Inkscape::DrawingItem *arenaitem = view->arenaitem ; arenaitem ; arenaitem = arenaitem->parent() ) { if (!arenaitem->visible()) { return true; } } return false; } } return true; } void SPItem::setHighlight(guint32 color) { _highlightColor = color; updateRepr(); } bool SPItem::isHighlightSet() const { return _highlightColor != 0; } guint32 SPItem::highlight_color() const { if (isHighlightSet()) { return _highlightColor; } SPItem const *item = dynamic_cast(parent); if (parent && (parent != this) && item) { return item->highlight_color(); } else { static Inkscape::Preferences *prefs = Inkscape::Preferences::get(); return prefs->getInt("/tools/nodes/highlight_color", 0xaaaaaaff); } } 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 ) { SPSwitch *switchItem = dynamic_cast(parent); if (switchItem) { switchItem->resetChildEvaluated(); } } } bool SPItem::isEvaluated() const { if ( StatusUnknown == _evaluated_status ) { _is_evaluated = sp_item_evaluate(this); _evaluated_status = StatusCalculated; } return _is_evaluated; } bool SPItem::isExplicitlyHidden() const { return (style->display.set && style->display.value == SP_CSS_DISPLAY_NONE); } 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(); } void SPItem::setCenter(Geom::Point const &object_centre) { document->ensureUpToDate(); // Copied from DocumentProperties::onDocUnitChange() gdouble viewscale = 1.0; Geom::Rect vb = this->document->getRoot()->viewBox; if ( !vb.hasZeroArea() ) { gdouble viewscale_w = this->document->getWidth().value("px") / vb.width(); gdouble viewscale_h = this->document->getHeight().value("px")/ vb.height(); viewscale = std::min(viewscale_h, viewscale_w); } // FIXME this is seriously wrong Geom::OptRect bbox = desktopGeometricBounds(); if (bbox) { // object centre is document coordinates (i.e. in pixels), so we need to consider the viewbox // to translate to user units; transform_center_x/y is in user units transform_center_x = (object_centre[Geom::X] - bbox->midpoint()[Geom::X])/viewscale; 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])/viewscale; 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() const { return (transform_center_x != 0 || transform_center_y != 0); } // Get the item's transformation center in desktop coordinates (i.e. in pixels) Geom::Point SPItem::getCenter() const { document->ensureUpToDate(); // Copied from DocumentProperties::onDocUnitChange() gdouble viewscale = 1.0; Geom::Rect vb = this->document->getRoot()->viewBox; if ( !vb.hasZeroArea() ) { gdouble viewscale_w = this->document->getWidth().value("px") / vb.width(); gdouble viewscale_h = this->document->getHeight().value("px")/ vb.height(); viewscale = std::min(viewscale_h, viewscale_w); } // FIXME this is seriously wrong Geom::OptRect bbox = desktopGeometricBounds(); if (bbox) { // transform_center_x/y are stored in user units, so we have to take the viewbox into account to translate to document coordinates return bbox->midpoint() + Geom::Point (transform_center_x*viewscale, transform_center_y*viewscale); } else { return Geom::Point(0, 0); // something's wrong! } } void SPItem::scaleCenter(Geom::Scale const &sc) { transform_center_x *= sc[Geom::X]; transform_center_y *= sc[Geom::Y]; } namespace { bool is_item(SPObject const &object) { return dynamic_cast(&object) != nullptr; } } void SPItem::raiseToTop() { auto& list = parent->children; auto end = SPObject::ChildrenList::reverse_iterator(list.iterator_to(*this)); auto topmost = std::find_if(list.rbegin(), end, &is_item); // auto topmost = find_last_if(++parent->children.iterator_to(*this), parent->children.end(), &is_item); if (topmost != list.rend()) { getRepr()->parent()->changeOrder(getRepr(), topmost->getRepr()); } } bool SPItem::raiseOne() { auto next_higher = std::find_if(++parent->children.iterator_to(*this), parent->children.end(), &is_item); if (next_higher != parent->children.end()) { Inkscape::XML::Node *ref = next_higher->getRepr(); getRepr()->parent()->changeOrder(getRepr(), ref); return true; } return false; } bool SPItem::lowerOne() { auto& list = parent->children; auto self = list.iterator_to(*this); auto start = SPObject::ChildrenList::reverse_iterator(self); auto next_lower = std::find_if(start, list.rend(), &is_item); if (next_lower != list.rend()) { auto next = list.iterator_to(*next_lower); if (next == list.begin()) { getRepr()->parent()->changeOrder(getRepr(), nullptr); } else { --next; auto ref = next->getRepr(); getRepr()->parent()->changeOrder(getRepr(), ref); } return true; } return false; } void SPItem::lowerToBottom() { auto bottom = std::find_if(parent->children.begin(), parent->children.iterator_to(*this), &is_item); if (bottom != parent->children.iterator_to(*this)) { Inkscape::XML::Node *ref = nullptr; if (bottom != parent->children.begin()) { bottom--; ref = bottom->getRepr(); } parent->getRepr()->changeOrder(getRepr(), ref); } } /** * Return the parent, only if it's a group object. */ SPGroup *SPItem::getParentGroup() const { return dynamic_cast(parent); } void SPItem::moveTo(SPItem *target, bool intoafter) { Inkscape::XML::Node *target_ref = ( target ? target->getRepr() : nullptr ); Inkscape::XML::Node *our_ref = getRepr(); if (!target_ref) { // Assume move to the "first" in the top node, find the top node intoafter = false; SPObject* bottom = this->document->getObjectByRepr(our_ref->root())->firstChild(); while(!dynamic_cast(bottom->getNext())){ bottom = bottom->getNext(); } target_ref = bottom->getRepr(); } if (target_ref == our_ref) { // Move to ourself ignore return; } if (intoafter) { // Move this inside of the target at the end our_ref->parent()->removeChild(our_ref); target_ref->addChild(our_ref, nullptr); } 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 { // Same parent, just move our_ref->parent()->changeOrder(our_ref, target_ref); } } void SPItem::build(SPDocument *document, Inkscape::XML::Node *repr) { #ifdef OBJECT_TRACE objectTrace( "SPItem::build"); #endif SPItem* object = this; object->readAttr(SPAttr::STYLE); object->readAttr(SPAttr::TRANSFORM); object->readAttr(SPAttr::CLIP_PATH); object->readAttr(SPAttr::MASK); object->readAttr(SPAttr::SODIPODI_INSENSITIVE); object->readAttr(SPAttr::TRANSFORM_CENTER_X); object->readAttr(SPAttr::TRANSFORM_CENTER_Y); object->readAttr(SPAttr::CONNECTOR_AVOID); object->readAttr(SPAttr::CONNECTION_POINTS); object->readAttr(SPAttr::INKSCAPE_HIGHLIGHT_COLOR); SPObject::build(document, repr); #ifdef OBJECT_TRACE objectTrace( "SPItem::build", false); #endif } void SPItem::release() { SPItem* item = this; // 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; SPObject::release(); SPPaintServer *fill_ps = style->getFillPaintServer(); SPPaintServer *stroke_ps = style->getStrokePaintServer(); while (item->display) { if (fill_ps) { fill_ps->hide(item->display->arenaitem->key()); } if (stroke_ps) { stroke_ps->hide(item->display->arenaitem->key()); } item->display = sp_item_view_list_remove(item->display, item->display); } //item->_transformed_signal.~signal(); } void SPItem::set(SPAttr key, gchar const* value) { #ifdef OBJECT_TRACE std::stringstream temp; temp << "SPItem::set: " << sp_attribute_name(key) << " " << (value?value:"null"); objectTrace( temp.str() ); #endif SPItem *item = this; SPItem* object = item; switch (key) { case SPAttr::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 SPAttr::CLIP_PATH: { auto uri = extract_uri(value); if (!uri.empty() || item->clip_ref) { item->getClipRef().try_attach(uri.c_str()); } break; } case SPAttr::MASK: { auto uri = extract_uri(value); if (!uri.empty() || item->mask_ref) { item->getMaskRef().try_attach(uri.c_str()); } break; } case SPAttr::SODIPODI_INSENSITIVE: { item->sensitive = !value; for (SPItemView *v = item->display; v != nullptr; v = v->next) { v->arenaitem->setSensitive(item->sensitive); } break; } case SPAttr::INKSCAPE_HIGHLIGHT_COLOR: { item->_highlightColor = 0; if (value) { item->_highlightColor = sp_svg_read_color(value, 0x0) | 0xff; } break; } case SPAttr::CONNECTOR_AVOID: if (value || item->avoidRef) { item->getAvoidRef().setAvoid(value); } break; case SPAttr::TRANSFORM_CENTER_X: if (value) { item->transform_center_x = g_strtod(value, nullptr); } else { item->transform_center_x = 0; } object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); break; case SPAttr::TRANSFORM_CENTER_Y: if (value) { item->transform_center_y = g_strtod(value, nullptr); item->transform_center_y *= -document->yaxisdir(); } else { item->transform_center_y = 0; } object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); break; case SPAttr::SYSTEM_LANGUAGE: case SPAttr::REQUIRED_FEATURES: case SPAttr::REQUIRED_EXTENSIONS: { item->resetEvaluated(); // pass to default handler } default: if (SP_ATTRIBUTE_IS_CSS(key)) { // FIXME: See if this is really necessary. Also, check after modifying SPIPaint to preserve // non-#abcdef color formats. // Propergate the property change to all clones style->readFromObject(object); object->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_STYLE_MODIFIED_FLAG); } else { SPObject::set(key, value); } break; } #ifdef OBJECT_TRACE objectTrace( "SPItem::set", false); #endif } 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 != nullptr; v = v->next) { SPClipPath *oldPath = dynamic_cast(old_clip); g_assert(oldPath != nullptr); oldPath->hide(v->arenaitem->key()); } } SPClipPath *clipPath = dynamic_cast(clip); if (clipPath) { Geom::OptRect bbox = item->geometricBounds(); for (SPItemView *v = item->display; v != nullptr; v = v->next) { if (!v->arenaitem->key()) { v->arenaitem->setKey(SPItem::display_key_new(3)); } Inkscape::DrawingItem *ai = clipPath->show( v->arenaitem->drawing(), v->arenaitem->key()); v->arenaitem->setClip(ai); clipPath->setBBox(v->arenaitem->key(), bbox); clip->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); } } item->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); } void SPItem::mask_ref_changed(SPObject *old_mask, SPObject *mask, SPItem *item) { item->bbox_valid = FALSE; // force a re-evaluation if (old_mask) { /* Hide mask */ for (SPItemView *v = item->display; v != nullptr; v = v->next) { SPMask *maskItem = dynamic_cast(old_mask); g_assert(maskItem != nullptr); maskItem->sp_mask_hide(v->arenaitem->key()); } } SPMask *maskItem = dynamic_cast(mask); if (maskItem) { Geom::OptRect bbox = item->geometricBounds(); for (SPItemView *v = item->display; v != nullptr; v = v->next) { if (!v->arenaitem->key()) { v->arenaitem->setKey(SPItem::display_key_new(3)); } Inkscape::DrawingItem *ai = maskItem->sp_mask_show( v->arenaitem->drawing(), v->arenaitem->key()); v->arenaitem->setMask(ai); maskItem->sp_mask_set_bbox(v->arenaitem->key(), bbox); mask->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); } } } void SPItem::fill_ps_ref_changed(SPObject *old_ps, SPObject *ps, SPItem *item) { SPPaintServer *old_fill_ps = dynamic_cast(old_ps); if (old_fill_ps) { for (SPItemView *v =item->display; v != nullptr; v = v->next) { old_fill_ps->hide(v->arenaitem->key()); } } SPPaintServer *new_fill_ps = dynamic_cast(ps); if (new_fill_ps) { Geom::OptRect bbox = item->geometricBounds(); for (SPItemView *v = item->display; v != nullptr; v = v->next) { if (!v->arenaitem->key()) { v->arenaitem->setKey(SPItem::display_key_new(3)); } Inkscape::DrawingPattern *pi = new_fill_ps->show( v->arenaitem->drawing(), v->arenaitem->key(), bbox); v->arenaitem->setFillPattern(pi); if (pi) { new_fill_ps->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); } } } } void SPItem::stroke_ps_ref_changed(SPObject *old_ps, SPObject *ps, SPItem *item) { SPPaintServer *old_stroke_ps = dynamic_cast(old_ps); if (old_stroke_ps) { for (SPItemView *v =item->display; v != nullptr; v = v->next) { old_stroke_ps->hide(v->arenaitem->key()); } } SPPaintServer *new_stroke_ps = dynamic_cast(ps); if (new_stroke_ps) { Geom::OptRect bbox = item->geometricBounds(); for (SPItemView *v = item->display; v != nullptr; v = v->next) { if (!v->arenaitem->key()) { v->arenaitem->setKey(SPItem::display_key_new(3)); } Inkscape::DrawingPattern *pi = new_stroke_ps->show( v->arenaitem->drawing(), v->arenaitem->key(), bbox); v->arenaitem->setStrokePattern(pi); if (pi) { new_stroke_ps->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); } } } } void SPItem::update(SPCtx* ctx, guint flags) { SPItemCtx const *ictx = reinterpret_cast(ctx); // Any of the modifications defined in sp-object.h might change bbox, // so we invalidate it unconditionally bbox_valid = FALSE; viewport = ictx->viewport; // Cache viewport 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 = display; v != nullptr; v = v->next) { v->arenaitem->setTransform(transform); } } SPClipPath *clip_path = clip_ref ? clip_ref->getObject() : nullptr; SPMask *mask = mask_ref ? mask_ref->getObject() : nullptr; if ( clip_path || mask ) { Geom::OptRect bbox = geometricBounds(); if (clip_path) { for (SPItemView *v = display; v != nullptr; v = v->next) { clip_path->setBBox(v->arenaitem->key(), bbox); } } if (mask) { for (SPItemView *v = display; v != nullptr; v = v->next) { mask->sp_mask_set_bbox(v->arenaitem->key(), bbox); } } } if (flags & SP_OBJECT_STYLE_MODIFIED_FLAG) { for (SPItemView *v = display; v != nullptr; v = v->next) { v->arenaitem->setOpacity(SP_SCALE24_TO_FLOAT(style->opacity.value)); v->arenaitem->setAntialiasing(style->shape_rendering.computed == SP_CSS_SHAPE_RENDERING_CRISPEDGES ? 0 : 2); v->arenaitem->setIsolation( style->isolation.value ); v->arenaitem->setBlendMode( style->mix_blend_mode.value ); v->arenaitem->setVisible(!isHidden()); } } } /* Update bounding box in user space, used for filter and objectBoundingBox units */ if (style->filter.set && display) { Geom::OptRect item_bbox = geometricBounds(); SPItemView *itemview = display; do { if (itemview->arenaitem) itemview->arenaitem->setItemBounds(item_bbox); } while ( (itemview = itemview->next) ); } // Update libavoid with item geometry (for connector routing). if (avoidRef && document) { avoidRef->handleSettingChange(); } } void SPItem::modified(unsigned int /*flags*/) { #ifdef OBJECT_TRACE objectTrace( "SPItem::modified" ); objectTrace( "SPItem::modified", false ); #endif } Inkscape::XML::Node* SPItem::write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags) { SPItem *item = this; SPItem* object = item; // 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) { std::vectorl; for (auto& child: object->children) { if (dynamic_cast(&child) || dynamic_cast(&child)) { Inkscape::XML::Node *crepr = child.updateRepr(xml_doc, nullptr, flags); if (crepr) { l.push_back(crepr); } } } for (auto i = l.rbegin(); i!= l.rend(); ++i) { repr->addChild(*i, nullptr); Inkscape::GC::release(*i); } } else { for (auto& child: object->children) { if (dynamic_cast(&child) || dynamic_cast(&child)) { child.updateRepr(flags); } } } repr->setAttributeOrRemoveIfEmpty("transform", sp_svg_transform_write(item->transform)); if (flags & SP_OBJECT_WRITE_EXT) { repr->setAttribute("sodipodi:insensitive", ( item->sensitive ? nullptr : "true" )); if (item->transform_center_x != 0) repr->setAttributeSvgDouble("inkscape:transform-center-x", item->transform_center_x); else repr->removeAttribute("inkscape:transform-center-x"); if (item->transform_center_y != 0) { auto y = item->transform_center_y; y *= -document->yaxisdir(); repr->setAttributeSvgDouble("inkscape:transform-center-y", y); } else repr->removeAttribute("inkscape:transform-center-y"); } if (item->clip_ref){ if (item->clip_ref->getObject()) { auto value = item->clip_ref->getURI()->cssStr(); repr->setAttributeOrRemoveIfEmpty("clip-path", value); } } if (item->mask_ref){ if (item->mask_ref->getObject()) { auto value = item->mask_ref->getURI()->cssStr(); repr->setAttributeOrRemoveIfEmpty("mask", value); } } if (item->isHighlightSet()){ repr->setAttribute("inkscape:highlight-color", SPColor(item->_highlightColor).toString()); } else { repr->removeAttribute("inkscape:highlight-color"); } SPObject::write(xml_doc, repr, flags); return repr; } // CPPIFY: make pure virtual Geom::OptRect SPItem::bbox(Geom::Affine const & /*transform*/, SPItem::BBoxType /*type*/) const { //throw; return Geom::OptRect(); } Geom::OptRect SPItem::geometricBounds(Geom::Affine const &transform) const { Geom::OptRect bbox; // call the subclass method // CPPIFY //bbox = this->bbox(transform, SPItem::GEOMETRIC_BBOX); bbox = const_cast(this)->bbox(transform, SPItem::GEOMETRIC_BBOX); return bbox; } Geom::OptRect SPItem::visualBounds(Geom::Affine const &transform, bool wfilter, bool wclip, bool wmask) const { using Geom::X; using Geom::Y; Geom::OptRect bbox; SPFilter *filter = style ? style->getFilter() : nullptr; if (filter && wfilter) { // call the subclass method // CPPIFY //bbox = this->bbox(Geom::identity(), SPItem::VISUAL_BBOX); bbox = const_cast(this)->bbox(Geom::identity(), SPItem::GEOMETRIC_BBOX); // see LP Bug 1229971 // 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 // CPPIFY //bbox = this->bbox(transform, SPItem::VISUAL_BBOX); bbox = const_cast(this)->bbox(transform, SPItem::VISUAL_BBOX); } if (clip_ref && clip_ref->getObject() && wclip) { SPItem *ownerItem = dynamic_cast(clip_ref->getOwner()); g_assert(ownerItem != nullptr); ownerItem->bbox_valid = FALSE; // LP Bug 1349018 bbox.intersectWith(clip_ref->getObject()->geometricBounds(transform)); } if (mask_ref && mask_ref->getObject() && wmask) { bbox_valid = false; // LP Bug 1349018 bbox.intersectWith(mask_ref->getObject()->visualBounds(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); } } Geom::OptRect SPItem::documentPreferredBounds() const { if (Inkscape::Preferences::get()->getInt("/tools/bounding_box") == 0) { return documentBounds(SPItem::VISUAL_BBOX); } else { return documentBounds(SPItem::GEOMETRIC_BBOX); } } Geom::OptRect SPItem::documentGeometricBounds() const { return geometricBounds(i2doc_affine()); } 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(); } } Geom::OptRect SPItem::desktopGeometricBounds() const { return geometricBounds(i2dt_affine()); } Geom::OptRect SPItem::desktopVisualBounds() const { Geom::OptRect ret = documentVisualBounds(); if (ret) { *ret *= document->doc2dt(); } 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 int SPItem::pos_in_parent() const { g_assert(parent != nullptr); g_assert(SP_IS_OBJECT(parent)); unsigned int pos = 0; for (auto& iter: parent->children) { if (&iter == this) { return pos; } if (dynamic_cast(&iter)) { pos++; } } g_assert_not_reached(); return 0; } // CPPIFY: make pure virtual, see below! void SPItem::snappoints(std::vector & /*p*/, Inkscape::SnapPreferences const */*snapprefs*/) const { //throw; } /* 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 // CPPIFY //this->snappoints(p, snapprefs); const_cast(this)->snappoints(p, snapprefs); // Get the snappoints at the item's center if (snapprefs != nullptr && snapprefs->isTargetSnappable(Inkscape::SNAPTARGET_ROTATION_CENTER)) { p.emplace_back(getCenter(), Inkscape::SNAPSOURCE_ROTATION_CENTER, Inkscape::SNAPTARGET_ROTATION_CENTER); } // Get the snappoints of clipping paths and mask, if any std::list clips_and_masks; if (clip_ref) clips_and_masks.push_back(clip_ref->getObject()); if (mask_ref) clips_and_masks.push_back(mask_ref->getObject()); SPDesktop *desktop = SP_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(auto& child: (*o)->children) { SPItem *item = dynamic_cast(const_cast(&child)); if (item) { std::vector p_clip_or_mask; // Please note the recursive call here! item->getSnappoints(p_clip_or_mask, snapprefs); // Take into account the transformation of the item being clipped or masked for (const auto & p_orig : p_clip_or_mask) { // 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.emplace_back(pt, p_orig.getSourceType(), p_orig.getTargetType()); } } } } } } // CPPIFY: make pure virtual void SPItem::print(SPPrintContext* /*ctx*/) { //throw; } void SPItem::invoke_print(SPPrintContext *ctx) { if ( !isHidden() ) { if (!transform.isIdentity() || style->opacity.value != SP_SCALE24_MAX) { ctx->bind(transform, SP_SCALE24_TO_FLOAT(style->opacity.value)); this->print(ctx); ctx->release(); } else { this->print(ctx); } } } /** * The item's type name, not node tag name. NOT translated. * * @return The item's type name (default: 'item') */ const char* SPItem::typeName() const { return "item"; } /** * The item's type name as a translated human string. * * Translated string for UI display. */ const char* SPItem::displayName() const { return _("Object"); } gchar* SPItem::description() const { return g_strdup(""); } gchar *SPItem::detailedDescription() const { gchar* s = g_strdup_printf("%s %s", this->displayName(), this->description()); if (s && clip_ref && clip_ref->getObject()) { gchar *snew = g_strdup_printf (_("%s; clipped"), s); g_free (s); s = snew; } if (s && mask_ref && 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 = nullptr; 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; } bool SPItem::isFiltered() const { return (style && style->filter.href && style->filter.href->getObject()); } SPObject* SPItem::isInMask() const { SPObject* parent = this->parent; while (parent && !dynamic_cast(parent)) { parent = parent->parent; } return parent; } SPObject* SPItem::isInClipPath() const { SPObject* parent = this->parent; while (parent && !dynamic_cast(parent)) { parent = parent->parent; } return parent; } unsigned SPItem::display_key_new(unsigned numkeys) { static unsigned dkey = 0; dkey += numkeys; return dkey - numkeys; } // CPPIFY: make pure virtual Inkscape::DrawingItem* SPItem::show(Inkscape::Drawing& /*drawing*/, unsigned int /*key*/, unsigned int /*flags*/) { //throw; return nullptr; } Inkscape::DrawingItem *SPItem::invoke_show(Inkscape::Drawing &drawing, unsigned key, unsigned flags) { Inkscape::DrawingItem *ai = nullptr; ai = this->show(drawing, key, flags); if (ai != nullptr) { 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->setIsolation( style->isolation.value ); ai->setBlendMode( style->mix_blend_mode.value ); //ai->setCompositeOperator( style->composite_op.value ); ai->setVisible(!isHidden()); ai->setSensitive(sensitive); if (clip_ref && 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 cp->setBBox(clip_key, item_bbox); if (document == cp->document) { // Request a display update only within the same document. This is to prevent spurious // updates in a "reference document" set with SPDocument::set_reference_document(). // Sourcing a clip from an external reference document should not taint it. cp->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); } } if (mask_ref && 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 = mask->sp_mask_show(drawing, mask_key); ai->setMask(ac); // Update bbox, in case the mask uses bbox units mask->sp_mask_set_bbox(mask_key, item_bbox); if (document == mask->document) { // Do not taint a reference document - see the comment above. mask->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); } } SPPaintServer *fill_ps = style->getFillPaintServer(); if (fill_ps) { if (!display->arenaitem->key()) { display->arenaitem->setKey(display_key_new(3)); } int fill_key = display->arenaitem->key(); Inkscape::DrawingPattern *ap = fill_ps->show(drawing, fill_key, item_bbox); ai->setFillPattern(ap); if (ap) { fill_ps->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); } } SPPaintServer *stroke_ps = style->getStrokePaintServer(); if (stroke_ps) { if (!display->arenaitem->key()) { display->arenaitem->setKey(display_key_new(3)); } int stroke_key = display->arenaitem->key(); Inkscape::DrawingPattern *ap = stroke_ps->show(drawing, stroke_key, item_bbox); ai->setStrokePattern(ap); if (ap) { stroke_ps->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG); } } ai->setItem(this); ai->setItemBounds(geometricBounds()); } return ai; } // CPPIFY: make pure virtual void SPItem::hide(unsigned int /*key*/) { //throw; } void SPItem::invoke_hide(unsigned key) { this->hide(key); SPItemView *ref = nullptr; SPItemView *v = display; while (v != nullptr) { SPItemView *next = v->next; if (v->key == key) { if (clip_ref && clip_ref->getObject()) { (clip_ref->getObject())->hide(v->arenaitem->key()); v->arenaitem->setClip(nullptr); } if (mask_ref && mask_ref->getObject()) { mask_ref->getObject()->sp_mask_hide(v->arenaitem->key()); v->arenaitem->setMask(nullptr); } SPPaintServer *fill_ps = style->getFillPaintServer(); if (fill_ps) { fill_ps->hide(v->arenaitem->key()); } SPPaintServer *stroke_ps = style->getStrokePaintServer(); if (stroke_ps) { stroke_ps->hide(v->arenaitem->key()); } 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, PaintServerTransform pt) { bool fill = (pt == TRANSFORM_FILL || pt == TRANSFORM_BOTH); if (fill && style && (style->fill.isPaintserver())) { SPObject *server = style->getFillPaintServer(); SPPattern *serverPatt = dynamic_cast(server); if ( serverPatt ) { SPPattern *pattern = serverPatt->clone_if_necessary(this, "fill"); pattern->transform_multiply(postmul, set); } } bool stroke = (pt == TRANSFORM_STROKE || pt == TRANSFORM_BOTH); if (stroke && style && (style->stroke.isPaintserver())) { SPObject *server = style->getStrokePaintServer(); SPPattern *serverPatt = dynamic_cast(server); if ( serverPatt ) { SPPattern *pattern = serverPatt->clone_if_necessary(this, "stroke"); pattern->transform_multiply(postmul, set); } } } void SPItem::adjust_hatch(Geom::Affine const &postmul, bool set, PaintServerTransform pt) { bool fill = (pt == TRANSFORM_FILL || pt == TRANSFORM_BOTH); if (fill && style && (style->fill.isPaintserver())) { SPObject *server = style->getFillPaintServer(); SPHatch *serverHatch = dynamic_cast(server); if (serverHatch) { SPHatch *hatch = serverHatch->clone_if_necessary(this, "fill"); hatch->transform_multiply(postmul, set); } } bool stroke = (pt == TRANSFORM_STROKE || pt == TRANSFORM_BOTH); if (stroke && style && (style->stroke.isPaintserver())) { SPObject *server = style->getStrokePaintServer(); SPHatch *serverHatch = dynamic_cast(server); if (serverHatch) { SPHatch *hatch = serverHatch->clone_if_necessary(this, "stroke"); hatch->transform_multiply(postmul, set); } } } void SPItem::adjust_gradient( Geom::Affine const &postmul, bool set ) { if ( style && style->fill.isPaintserver() ) { SPPaintServer *server = style->getFillPaintServer(); SPGradient *serverGrad = dynamic_cast(server); if ( serverGrad ) { /** * \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( serverGrad, this, "fill" ); sp_gradient_transform_multiply( gradient, postmul, set ); } } if ( style && style->stroke.isPaintserver() ) { SPPaintServer *server = style->getStrokePaintServer(); SPGradient *serverGrad = dynamic_cast(server); if ( serverGrad ) { SPGradient *gradient = sp_gradient_convert_to_userspace( serverGrad, 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 && !Geom::are_near(ex, 1.0, Geom::EPSILON)) { style->stroke_width.computed *= ex; style->stroke_width.set = TRUE; if ( !style->stroke_dasharray.values.empty() ) { for (auto & value : style->stroke_dasharray.values) { value.value *= ex; value.computed *= ex; } style->stroke_dashoffset.value *= ex; style->stroke_dashoffset.computed *= ex; } updateRepr(); } } /** * Find out the inverse of previous transform of an item (from its repr) */ 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; } 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 ( !dynamic_cast(this) ) { for (auto& o: children) { SPItem *item = dynamic_cast(&o); if (item) { item->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 ( !dynamic_cast(this) ) { for (auto& o: children) { SPItem *item = dynamic_cast(&o); if (item) { item->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) { SPRect *rect = dynamic_cast(item); if (rect) { rect->compensateRxRy(advertized_transform); } for(auto& o: item->children) { SPItem *itm = dynamic_cast(&o); if (itm) { sp_item_adjust_rects_recursive(itm, advertized_transform); } } } void SPItem::adjust_paint_recursive(Geom::Affine advertized_transform, Geom::Affine t_ancestors, PaintServerType type) { // _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 (!(dynamic_cast(this) || dynamic_cast(this))) { for (auto& o: children) { SPItem *item = dynamic_cast(&o); if (item) { // At the level of the transformed item, t_ancestors is identity; // below it, it is the accumulated chain of transforms from this level to the top level item->adjust_paint_recursive(advertized_transform, t_item * t_ancestors, type); } } } // 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) switch (type) { case PATTERN: { adjust_pattern(paint_delta); break; } case HATCH: { adjust_hatch(paint_delta); break; } default: { adjust_gradient(paint_delta); } } } // CPPIFY:: make pure virtual? // Not all SPItems must necessarily have a set transform method! Geom::Affine SPItem::set_transform(Geom::Affine const &transform) { // throw; return transform; } void SPItem::doWriteTransform(Geom::Affine const &transform, Geom::Affine const *adv, bool compensate) { // calculate the relative transform, if not given by the adv attribute Geom::Affine advertized_transform; if (adv != nullptr) { 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(), PATTERN); } if (!prefs->getBool("/options/transform/hatch", true)) { adjust_paint_recursive(advertized_transform.inverse(), Geom::identity(), HATCH); } /// \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(), GRADIENT); } 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(), GRADIENT); } } // endif(compensate) gint preserve = prefs->getBool("/options/preservetransform/value", false); Geom::Affine transform_attr (transform); // CPPIFY: check this code. // If onSetTransform is not overridden, CItem::onSetTransform will return the transform it was given as a parameter. // onSetTransform cannot be pure due to the fact that not all visible Items are transformable. SPLPEItem * lpeitem = SP_LPE_ITEM(this); if (lpeitem) { lpeitem->notifyTransform(transform); } bool unoptimized = false; if (auto classes = getAttribute("class")) { auto classdata = Glib::ustring(classes); size_t pos = classdata.find("UnoptimicedTransforms"); if (pos != Glib::ustring::npos) { unoptimized = true; } } if ( // run the object's set_transform (i.e. embed transform) only if: (dynamic_cast(this) && firstChild() && dynamic_cast(firstChild())) || (!preserve && // user did not chose to preserve all transforms (!clip_ref || !clip_ref->getObject()) && // the object does not have a clippath (!mask_ref || !mask_ref->getObject()) && // the object does not have a mask !(!transform.isTranslation() && style && style->getFilter()) && !unoptimized) // the object does not have a filter, or the transform is translation (which is supposed to not affect filters) ) { transform_attr = this->set_transform(transform); } 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); } } } // this avoid temporary scaling issues on display when near identity // this must be a bit grater than EPSILON * transform.descrim() double e = 1e-5 * transform.descrim(); if (transform_attr.isIdentity(e)) { transform_attr = Geom::Affine(); } 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(); if (lpeitem) { sp_lpe_item_update_patheffect(lpeitem, true, true); } // send the relative transform with a _transformed_signal _transformed_signal.emit(&advertized_transform, this); } // CPPIFY: see below, do not make pure? gint SPItem::event(SPEvent* /*event*/) { return FALSE; } gint SPItem::emitEvent(SPEvent &event) { return this->event(&event); } 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); } } //void SPItem::convert_to_guides() const { // // CPPIFY: If not overridden, call SPItem::convert_to_guides() const, see below! // this->convert_to_guides(); //} Geom::Affine i2anc_affine(SPObject const *object, SPObject const *const ancestor) { Geom::Affine ret(Geom::identity()); g_return_val_if_fail(object != nullptr, ret); /* stop at first non-renderable ancestor */ while ( object != ancestor && dynamic_cast(object) ) { SPRoot const *root = dynamic_cast(object); if (root) { ret *= root->c2p; } else { SPItem const *item = dynamic_cast(object); g_assert(item != nullptr); ret *= item->transform; } object = object->parent; } return ret; } Geom::Affine i2i_affine(SPObject const *src, SPObject const *dest) { g_return_val_if_fail(src != nullptr && dest != nullptr, 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); } Geom::Affine SPItem::i2doc_affine() const { return i2anc_affine(this, nullptr); } Geom::Affine SPItem::i2dt_affine() const { Geom::Affine ret(i2doc_affine()); ret *= document->doc2dt(); return ret; } // TODO should be named "set_i2dt_affine" 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 { dt2p = document->dt2doc(); } Geom::Affine const i2p( i2dt * dt2p ); set_item_transform(i2p); } 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 != nullptr); g_assert(dynamic_cast(item) != nullptr); g_assert(drawing_item != nullptr); 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; } Inkscape::DrawingItem *SPItem::get_arenaitem(unsigned key) { for ( SPItemView *iv = display ; iv ; iv = iv->next ) { if ( iv->key == key ) { return iv->arenaitem; } } return nullptr; } 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 = nullptr; for (auto& iter: obj->children) { SPItem *tmp = dynamic_cast(&iter); if ( tmp ) { child = tmp; break; } } return child; } void SPItem::convert_to_guides() const { 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.emplace_back(A, B); pts.emplace_back(B, C); pts.emplace_back(C, D); pts.emplace_back(D, A); sp_guide_pt_pairs_to_guides(document, pts); } void SPItem::rotate_rel(Geom::Rotate const &rotation) { Geom::Point center = getCenter(); Geom::Translate const s(getCenter()); Geom::Affine affine = Geom::Affine(s).inverse() * Geom::Affine(rotation) * Geom::Affine(s); // Rotate item. set_i2d_affine(i2dt_affine() * (Geom::Affine)affine); // Use each item's own transform writer, consistent with sp_selection_apply_affine() doWriteTransform(transform); // Restore the center position (it's changed because the bbox center changed) if (isCenterSet()) { setCenter(center * affine); updateRepr(); } } void SPItem::scale_rel(Geom::Scale const &scale) { Geom::OptRect bbox = desktopVisualBounds(); if (bbox) { Geom::Translate const s(bbox->midpoint()); // use getCenter? set_i2d_affine(i2dt_affine() * s.inverse() * scale * s); doWriteTransform(transform); } } void SPItem::skew_rel(double skewX, double skewY) { Geom::Point center = getCenter(); Geom::Translate const s(getCenter()); Geom::Affine const skew(1, skewY, skewX, 1, 0, 0); Geom::Affine affine = Geom::Affine(s).inverse() * skew * Geom::Affine(s); set_i2d_affine(i2dt_affine() * affine); doWriteTransform(transform); // Restore the center position (it's changed because the bbox center changed) if (isCenterSet()) { setCenter(center * affine); updateRepr(); } } void SPItem::move_rel( Geom::Translate const &tr) { set_i2d_affine(i2dt_affine() * tr); doWriteTransform(transform); } /* 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 :