Adding upstream version 1.3+ds.upstream/1.3+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 281 insertions, 0 deletions

diff --git a/src/helper/stock-items.cpp b/src/helper/stock-items.cpp
new file mode 100644
index 0000000..6b77937
--- /dev/null
+++ b/src/helper/stock-items.cpp
@@ -0,0 +1,281 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Stock-items
+ *
+ * Stock Item management code
+ *
+ * Authors:
+ *  John Cliff <simarilius@yahoo.com>
+ *  Jon A. Cruz <jon@joncruz.org>
+ *   Abhishek Sharma
+ *
+ * Copyright 2004 John Cliff
+ *
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <cstring>
+#include <glibmm/fileutils.h>
+
+#include "libnrtype/font-factory.h"
+#include "path-prefix.h"
+
+#include <xml/repr.h>
+#include "inkscape.h"
+
+#include "io/sys.h"
+#include "io/resource.h"
+#include "pattern-manipulation.h"
+#include "stock-items.h"
+#include "manipulation/copy-resource.h"
+#include "object/sp-gradient.h"
+#include "object/sp-pattern.h"
+#include "object/sp-marker.h"
+#include "object/sp-defs.h"
+#include "util/statics.h"
+
+// Stock objects kept in documents with controlled life time
+struct Documents {
+    static Documents& get();
+    std::vector<std::shared_ptr<SPDocument>> documents;
+};
+
+Documents& Documents::get() {
+    // make sure font factory is initialized first, that way Documents will be destructed before it
+    FontFactory::get();
+
+    static auto factory = Inkscape::Util::Static<Documents>();
+    return factory.get();
+}
+
+std::vector<std::shared_ptr<SPDocument>> sp_get_paint_documents(const std::function<bool (SPDocument*)>& filter) {
+    auto& storage = Documents::get();
+
+    if (storage.documents.empty()) {
+        using namespace Inkscape::IO::Resource;
+        auto files = get_filenames(SYSTEM, PAINT, {".svg"});
+        auto share = get_filenames(SHARED, PAINT, {".svg"});
+        auto user  = get_filenames(USER,   PAINT, {".svg"});
+        files.insert(files.end(), user.begin(), user.end());
+        files.insert(files.end(), share.begin(), share.end());
+        for (auto&& file : files) {
+            if (Glib::file_test(file, Glib::FILE_TEST_IS_REGULAR)) {
+                std::shared_ptr<SPDocument> doc(SPDocument::createNewDoc(file.c_str(), false));
+                if (doc) {
+                    doc->ensureUpToDate(); // update, so patterns referencing clippaths render properly
+                    storage.documents.push_back(std::move(doc));
+                }
+                else {
+                    g_warning("File %s not loaded.", file.c_str());
+                }
+            }
+        }
+    }
+
+    std::vector<std::shared_ptr<SPDocument>> out;
+    std::copy_if(storage.documents.begin(), storage.documents.end(), std::back_inserter(out), [=](const std::shared_ptr<SPDocument>& doc) {
+        return filter(doc.get());
+    });
+
+    return out;
+}
+
+static SPDocument *load_paint_doc(char const *basename,
+                                  Inkscape::IO::Resource::Type type = Inkscape::IO::Resource::PAINT)
+{
+    using namespace Inkscape::IO::Resource;
+
+    for (Domain const domain : {SYSTEM, CREATE}) {
+        auto const filename = get_path_string(domain, type, basename);
+        if (Glib::file_test(filename, Glib::FILE_TEST_IS_REGULAR)) {
+            auto doc = SPDocument::createNewDoc(filename.c_str(), false);
+            if (doc) {
+                doc->ensureUpToDate();
+                return doc;
+            }
+        }
+    }
+
+    return nullptr;
+}
+
+// FIXME: these should be merged with the icon loading code so they
+// can share a common file/doc cache.  This function should just
+// take the dir to look in, and the file to check for, and cache
+// against that, rather than the existing copy/paste code seen here.
+
+static SPObject * sp_marker_load_from_svg(gchar const *name, SPDocument *current_doc)
+{
+    if (!current_doc) {
+        return nullptr;
+    }
+    /* Try to load from document */
+    static SPDocument *doc = load_paint_doc("markers.svg", Inkscape::IO::Resource::MARKERS);
+
+    if (doc) {
+        /* Get the marker we want */
+        SPObject *object = doc->getObjectById(name);
+        if (object && is<SPMarker>(object)) {
+            SPDefs *defs = current_doc->getDefs();
+            Inkscape::XML::Document *xml_doc = current_doc->getReprDoc();
+            Inkscape::XML::Node *mark_repr = object->getRepr()->duplicate(xml_doc);
+            defs->getRepr()->addChild(mark_repr, nullptr);
+            SPObject *cloned_item = current_doc->getObjectByRepr(mark_repr);
+            Inkscape::GC::release(mark_repr);
+            return cloned_item;
+        }
+    }
+    return nullptr;
+}
+
+
+static SPObject* sp_pattern_load_from_svg(gchar const *name, SPDocument *current_doc, SPDocument* source_doc) {
+    if (!current_doc || !source_doc) {
+        return nullptr;
+    }
+    // Try to load from document
+    // Get the pattern we want
+    if (auto pattern = cast<SPPattern>(source_doc->getObjectById(name))) {
+        return sp_copy_resource(pattern, current_doc);
+    }
+    return nullptr;
+}
+
+
+static SPObject *
+sp_gradient_load_from_svg(gchar const *name, SPDocument *current_doc)
+{
+    if (!current_doc) {
+        return nullptr;
+    }
+    /* Try to load from document */
+    static SPDocument *doc = load_paint_doc("gradients.svg");
+
+    if (doc) {
+        /* Get the gradient we want */
+        SPObject *object = doc->getObjectById(name);
+        if (object && is<SPGradient>(object)) {
+            SPDefs *defs = current_doc->getDefs();
+            Inkscape::XML::Document *xml_doc = current_doc->getReprDoc();
+            Inkscape::XML::Node *pat_repr = object->getRepr()->duplicate(xml_doc);
+            defs->getRepr()->addChild(pat_repr, nullptr);
+            Inkscape::GC::release(pat_repr);
+            return object;
+        }
+    }
+    return nullptr;
+}
+
+// get_stock_item returns a pointer to an instance of the desired stock object in the current doc
+// if necessary it will import the object. Copes with name clashes through use of the inkscape:stockid property
+// This should be set to be the same as the id in the library file.
+
+SPObject *get_stock_item(gchar const *urn, bool stock, SPDocument* stock_doc)
+{
+    g_assert(urn != nullptr);
+
+    /* check its an inkscape URN */
+    if (!strncmp (urn, "urn:inkscape:", 13)) {
+
+        gchar const *e = urn + 13;
+        int a = 0;
+        gchar * name = g_strdup(e);
+        gchar *name_p = name;
+        while (*name_p != ':' && *name_p != '\0'){
+            name_p++;
+            a++;
+        }
+
+        if (*name_p ==':') {
+            name_p++;
+        }
+
+        gchar * base = g_strndup(e, a);
+
+        SPDocument *doc = SP_ACTIVE_DOCUMENT;
+        SPDefs *defs = doc->getDefs();
+        if (!defs) {
+            g_free(base);
+            return nullptr;
+        }
+        SPObject *object = nullptr;
+        if (!strcmp(base, "marker") && !stock) {
+            for (auto& child: defs->children)
+            {
+                if (child.getRepr()->attribute("inkscape:stockid") &&
+                    !strcmp(name_p, child.getRepr()->attribute("inkscape:stockid")) &&
+                    is<SPMarker>(&child))
+                {
+                    object = &child;
+                }
+            }
+        }
+        else if (!strcmp(base,"pattern") && !stock)  {
+            for (auto& child: defs->children)
+            {
+                if (child.getRepr()->attribute("inkscape:stockid") &&
+                    !strcmp(name_p, child.getRepr()->attribute("inkscape:stockid")) &&
+                    is<SPPattern>(&child))
+                {
+                    object = &child;
+                }
+            }
+        }
+        else if (!strcmp(base,"gradient") && !stock)  {
+            for (auto& child: defs->children)
+            {
+                if (child.getRepr()->attribute("inkscape:stockid") &&
+                    !strcmp(name_p, child.getRepr()->attribute("inkscape:stockid")) &&
+                    is<SPGradient>(&child))
+                {
+                    object = &child;
+                }
+            }
+        }
+
+        if (object == nullptr) {
+
+            if (!strcmp(base, "marker"))  {
+                object = sp_marker_load_from_svg(name_p, doc);
+            }
+            else if (!strcmp(base, "pattern"))  {
+                object = sp_pattern_load_from_svg(name_p, doc, stock_doc);
+                if (object) {
+                    object->getRepr()->setAttribute("inkscape:collect", "always");
+                }
+            }
+            else if (!strcmp(base, "gradient"))  {
+                object = sp_gradient_load_from_svg(name_p, doc);
+            }
+        }
+
+        g_free(base);
+        g_free(name);
+
+        if (object) {
+            object->setAttribute("inkscape:isstock", "true");
+        }
+
+        return object;
+    }
+
+    else {
+
+        SPDocument *doc = SP_ACTIVE_DOCUMENT;
+        SPObject *object = doc->getObjectById(urn);
+
+        return object;
+    }
+}
+
+/*
+  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 :