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-rw-r--r--src/object/sp-flowregion.cpp398
1 files changed, 398 insertions, 0 deletions
diff --git a/src/object/sp-flowregion.cpp b/src/object/sp-flowregion.cpp
new file mode 100644
index 0000000..f1accf2
--- /dev/null
+++ b/src/object/sp-flowregion.cpp
@@ -0,0 +1,398 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * TODO: insert short description here
+ *//*
+ * Authors: see git history
+ *
+ * Copyright (C) 2018 Authors
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+/*
+ */
+
+#include <glibmm/i18n.h>
+
+#include <xml/repr.h>
+#include "display/curve.h"
+#include "sp-shape.h"
+#include "sp-text.h"
+#include "sp-use.h"
+#include "style.h"
+#include "document.h"
+#include "sp-title.h"
+#include "sp-desc.h"
+
+#include "sp-flowregion.h"
+
+#include "livarot/Path.h"
+#include "livarot/Shape.h"
+
+
+static void GetDest(SPObject* child,Shape **computed);
+
+
+SPFlowregion::SPFlowregion() : SPItem() {
+}
+
+SPFlowregion::~SPFlowregion() {
+ for (auto & it : this->computed) {
+ delete it;
+ }
+}
+
+void SPFlowregion::child_added(Inkscape::XML::Node *child, Inkscape::XML::Node *ref) {
+ SPItem::child_added(child, ref);
+
+ this->requestModified(SP_OBJECT_MODIFIED_FLAG);
+}
+
+/* fixme: hide (Lauris) */
+
+void SPFlowregion::remove_child(Inkscape::XML::Node * child) {
+ SPItem::remove_child(child);
+
+ this->requestModified(SP_OBJECT_MODIFIED_FLAG);
+}
+
+
+void SPFlowregion::update(SPCtx *ctx, unsigned int flags) {
+ SPItemCtx *ictx = reinterpret_cast<SPItemCtx *>(ctx);
+ SPItemCtx cctx = *ictx;
+
+ unsigned childflags = flags;
+ if (flags & SP_OBJECT_MODIFIED_FLAG) {
+ childflags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
+ }
+ childflags &= SP_OBJECT_MODIFIED_CASCADE;
+
+ std::vector<SPObject*>l;
+
+ for (auto& child: children) {
+ sp_object_ref(&child);
+ l.push_back(&child);
+ }
+
+ for (auto child:l) {
+ g_assert(child != nullptr);
+ SPItem *item = dynamic_cast<SPItem *>(child);
+
+ if (childflags || (child->uflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
+ if (item) {
+ SPItem const &chi = *item;
+ cctx.i2doc = chi.transform * ictx->i2doc;
+ cctx.i2vp = chi.transform * ictx->i2vp;
+ child->updateDisplay((SPCtx *)&cctx, childflags);
+ } else {
+ child->updateDisplay(ctx, childflags);
+ }
+ }
+
+ sp_object_unref(child);
+ }
+
+ SPItem::update(ctx, flags);
+
+ this->UpdateComputed();
+}
+
+void SPFlowregion::UpdateComputed()
+{
+ for (auto & it : computed) {
+ delete it;
+ }
+ computed.clear();
+
+ for (auto& child: children) {
+ Shape *shape = nullptr;
+ GetDest(&child, &shape);
+ computed.push_back(shape);
+ }
+}
+
+void SPFlowregion::modified(guint flags) {
+ if (flags & SP_OBJECT_MODIFIED_FLAG) {
+ flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
+ }
+
+ flags &= SP_OBJECT_MODIFIED_CASCADE;
+
+ std::vector<SPObject *>l;
+
+ for (auto& child: children) {
+ sp_object_ref(&child);
+ l.push_back(&child);
+ }
+
+ for (auto child:l) {
+ g_assert(child != nullptr);
+
+ if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
+ child->emitModified(flags);
+ }
+
+ sp_object_unref(child);
+ }
+}
+
+Inkscape::XML::Node *SPFlowregion::write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags) {
+ if (flags & SP_OBJECT_WRITE_BUILD) {
+ if ( repr == nullptr ) {
+ repr = xml_doc->createElement("svg:flowRegion");
+ }
+
+ std::vector<Inkscape::XML::Node *> l;
+ for (auto& child: children) {
+ if ( !dynamic_cast<SPTitle *>(&child) && !dynamic_cast<SPDesc *>(&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);
+ }
+
+ for (auto& child: children) {
+ if ( !dynamic_cast<SPTitle *>(&child) && !dynamic_cast<SPDesc *>(&child) ) {
+ child.updateRepr(flags);
+ }
+ }
+ }
+
+ SPItem::write(xml_doc, repr, flags);
+
+ this->UpdateComputed(); // copied from update(), see LP Bug 1339305
+
+ return repr;
+}
+
+const char* SPFlowregion::displayName() const {
+ // TRANSLATORS: "Flow region" is an area where text is allowed to flow
+ return _("Flow Region");
+}
+
+SPFlowregionExclude::SPFlowregionExclude() : SPItem() {
+ this->computed = nullptr;
+}
+
+SPFlowregionExclude::~SPFlowregionExclude() {
+ if (this->computed) {
+ delete this->computed;
+ this->computed = nullptr;
+ }
+}
+
+void SPFlowregionExclude::child_added(Inkscape::XML::Node *child, Inkscape::XML::Node *ref) {
+ SPItem::child_added(child, ref);
+
+ this->requestModified(SP_OBJECT_MODIFIED_FLAG);
+}
+
+/* fixme: hide (Lauris) */
+
+void SPFlowregionExclude::remove_child(Inkscape::XML::Node * child) {
+ SPItem::remove_child(child);
+
+ this->requestModified(SP_OBJECT_MODIFIED_FLAG);
+}
+
+
+void SPFlowregionExclude::update(SPCtx *ctx, unsigned int flags) {
+ SPItemCtx *ictx = reinterpret_cast<SPItemCtx *>(ctx);
+ SPItemCtx cctx = *ictx;
+
+ SPItem::update(ctx, flags);
+
+ if (flags & SP_OBJECT_MODIFIED_FLAG) {
+ flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
+ }
+
+ flags &= SP_OBJECT_MODIFIED_CASCADE;
+
+ std::vector<SPObject *> l;
+
+ for (auto& child: children) {
+ sp_object_ref(&child);
+ l.push_back(&child);
+ }
+
+ for(auto child:l) {
+ g_assert(child != nullptr);
+
+ if (flags || (child->uflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
+ SPItem *item = dynamic_cast<SPItem *>(child);
+ if (item) {
+ SPItem const &chi = *item;
+ cctx.i2doc = chi.transform * ictx->i2doc;
+ cctx.i2vp = chi.transform * ictx->i2vp;
+ child->updateDisplay((SPCtx *)&cctx, flags);
+ } else {
+ child->updateDisplay(ctx, flags);
+ }
+ }
+
+ sp_object_unref(child);
+ }
+
+ this->UpdateComputed();
+}
+
+
+void SPFlowregionExclude::UpdateComputed()
+{
+ if (computed) {
+ delete computed;
+ computed = nullptr;
+ }
+
+ for (auto& child: children) {
+ GetDest(&child, &computed);
+ }
+}
+
+void SPFlowregionExclude::modified(guint flags) {
+ if (flags & SP_OBJECT_MODIFIED_FLAG) {
+ flags |= SP_OBJECT_PARENT_MODIFIED_FLAG;
+ }
+
+ flags &= SP_OBJECT_MODIFIED_CASCADE;
+
+ std::vector<SPObject*> l;
+
+ for (auto& child: children) {
+ sp_object_ref(&child);
+ l.push_back(&child);
+ }
+
+ for (auto child:l) {
+ g_assert(child != nullptr);
+
+ if (flags || (child->mflags & (SP_OBJECT_MODIFIED_FLAG | SP_OBJECT_CHILD_MODIFIED_FLAG))) {
+ child->emitModified(flags);
+ }
+
+ sp_object_unref(child);
+ }
+}
+
+Inkscape::XML::Node *SPFlowregionExclude::write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags) {
+ if (flags & SP_OBJECT_WRITE_BUILD) {
+ if ( repr == nullptr ) {
+ repr = xml_doc->createElement("svg:flowRegionExclude");
+ }
+
+ std::vector<Inkscape::XML::Node *> l;
+
+ for (auto& child: children) {
+ 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: children) {
+ child.updateRepr(flags);
+ }
+ }
+
+ SPItem::write(xml_doc, repr, flags);
+
+ return repr;
+}
+
+const char* SPFlowregionExclude::displayName() const {
+ /* TRANSLATORS: A region "cut out of" a flow region; text is not allowed to flow inside the
+ * flow excluded region. flowRegionExclude in SVG 1.2: see
+ * http://www.w3.org/TR/2004/WD-SVG12-20041027/flow.html#flowRegion-elem and
+ * http://www.w3.org/TR/2004/WD-SVG12-20041027/flow.html#flowRegionExclude-elem. */
+ return _("Flow Excluded Region");
+}
+
+static void UnionShape(Shape **base_shape, Shape const *add_shape)
+{
+ if (*base_shape == nullptr)
+ *base_shape = new Shape;
+ if ( (*base_shape)->hasEdges() == false ) {
+ (*base_shape)->Copy(const_cast<Shape*>(add_shape));
+ } else if ( add_shape->hasEdges() ) {
+ Shape* temp=new Shape;
+ temp->Booleen(const_cast<Shape*>(add_shape), *base_shape, bool_op_union);
+ delete *base_shape;
+ *base_shape = temp;
+ }
+}
+
+static void GetDest(SPObject* child,Shape **computed)
+{
+ if ( child == nullptr || dynamic_cast<SPItem *>(child) == nullptr ) return;
+
+ SPCurve *curve=nullptr;
+ Geom::Affine tr_mat;
+
+ SPObject* u_child = child;
+ SPItem *item = dynamic_cast<SPItem *>(u_child);
+ g_assert(item != nullptr);
+ SPUse *use = dynamic_cast<SPUse *>(item);
+ if ( use ) {
+ u_child = use->child;
+ tr_mat = use->getRelativeTransform(child->parent);
+ } else {
+ tr_mat = item->transform;
+ }
+ SPShape *shape = dynamic_cast<SPShape *>(u_child);
+ if ( shape ) {
+ if (!(shape->_curve)) {
+ shape->set_shape();
+ }
+ curve = shape->getCurve();
+ } else {
+ SPText *text = dynamic_cast<SPText *>(u_child);
+ if ( text ) {
+ curve = text->getNormalizedBpath();
+ }
+ }
+
+ if ( curve ) {
+ Path* temp=new Path;
+ temp->LoadPathVector(curve->get_pathvector(), tr_mat, true);
+ Shape* n_shp=new Shape;
+ temp->Convert(0.25);
+ temp->Fill(n_shp,0);
+ Shape* uncross=new Shape;
+ SPStyle* style = u_child->style;
+ if ( style && style->fill_rule.computed == SP_WIND_RULE_EVENODD ) {
+ uncross->ConvertToShape(n_shp,fill_oddEven);
+ } else {
+ uncross->ConvertToShape(n_shp,fill_nonZero);
+ }
+ UnionShape(computed, uncross);
+ delete uncross;
+ delete n_shp;
+ delete temp;
+ curve->unref();
+ } else {
+// printf("no curve\n");
+ }
+}
+
+/*
+ Local Variables:
+ mode:c++
+ c-file-style:"stroustrup"
+ c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+ indent-tabs-mode:nil
+ fill-column:99
+ End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
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