1 files changed, 189 insertions, 0 deletions
diff --git a/src/object/sp-glyph-kerning.cpp b/src/object/sp-glyph-kerning.cpp
new file mode 100644
index 0000000..f924773
--- /dev/null
+++ b/src/object/sp-glyph-kerning.cpp
@@ -0,0 +1,189 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/**
+ * SVG <hkern> and <vkern> elements implementation
+ * W3C SVG 1.1 spec, page 476, section 20.7
+ *
+ * Authors:
+ *   Felipe C. da S. Sanches <juca@members.fsf.org>
+ *   Abhishek Sharma
+ *
+ * Copyright (C) 2008 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "xml/repr.h"
+#include "attributes.h"
+#include "sp-glyph-kerning.h"
+
+#include "document.h"
+#include <cstring>
+
+
+SPGlyphKerning::SPGlyphKerning() 
+    : SPObject()
+//TODO: correct these values:
+    , u1(nullptr)
+    , g1(nullptr)
+    , u2(nullptr)
+    , g2(nullptr)
+    , k(0)
+{
+}
+
+void SPGlyphKerning::build(SPDocument *document, Inkscape::XML::Node *repr)
+{
+    SPObject::build(document, repr);
+
+    this->readAttr(SPAttr::U1);
+    this->readAttr(SPAttr::G1);
+    this->readAttr(SPAttr::U2);
+    this->readAttr(SPAttr::G2);
+    this->readAttr(SPAttr::K);
+}
+
+void SPGlyphKerning::release()
+{
+    SPObject::release();
+}
+
+GlyphNames::GlyphNames(const gchar* value)
+{
+    names = value ? g_strdup(value) : nullptr;
+}
+
+GlyphNames::~GlyphNames()
+{
+    if (names) {
+    	g_free(names);
+    }
+}
+
+bool GlyphNames::contains(const char* name)
+{
+    if (!(this->names) || !name) {
+    	return false;
+    }
+    
+    std::istringstream is(this->names);
+    std::string str;
+    std::string s(name);
+    
+    while (is >> str) {
+        if (str == s) {
+            return true;
+        }
+    }
+    
+    return false;
+}
+
+void SPGlyphKerning::set(SPAttr key, const gchar *value)
+{
+    switch (key) {
+        case SPAttr::U1:
+        {
+            if (this->u1) {
+                delete this->u1;
+            }
+            
+            this->u1 = new UnicodeRange(value);
+            this->requestModified(SP_OBJECT_MODIFIED_FLAG);
+            break;
+        }
+        case SPAttr::U2:
+        {
+            if (this->u2) {
+                delete this->u2;
+            }
+            
+            this->u2 = new UnicodeRange(value);
+            this->requestModified(SP_OBJECT_MODIFIED_FLAG);
+            break;
+        }
+        case SPAttr::G1:
+        {
+            if (this->g1) {
+                delete this->g1;
+            }
+            
+            this->g1 = new GlyphNames(value);
+            this->requestModified(SP_OBJECT_MODIFIED_FLAG);
+            break;
+        }
+        case SPAttr::G2:
+        {
+            if (this->g2) {
+                delete this->g2;
+            }
+            
+            this->g2 = new GlyphNames(value);
+            this->requestModified(SP_OBJECT_MODIFIED_FLAG);
+             break;
+        }
+        case SPAttr::K:
+        {
+            double number = value ? g_ascii_strtod(value, nullptr) : 0;
+            
+            if (number != this->k){
+                this->k = number;
+                this->requestModified(SP_OBJECT_MODIFIED_FLAG);
+            }
+            break;
+        }
+        default:
+        {
+        	SPObject::set(key, value);
+            break;
+        }
+    }
+}
+
+/**
+ * Receives update notifications.
+ */
+void SPGlyphKerning::update(SPCtx *ctx, guint flags)
+{
+    if (flags & SP_OBJECT_MODIFIED_FLAG) {
+        /* do something to trigger redisplay, updates? */
+        this->readAttr(SPAttr::U1);
+        this->readAttr(SPAttr::U2);
+        this->readAttr(SPAttr::G2);
+        this->readAttr(SPAttr::K);
+    }
+
+    SPObject::update(ctx, flags);
+}
+
+#define COPY_ATTR(rd,rs,key) (rd)->setAttribute((key), rs->attribute(key));
+
+Inkscape::XML::Node* SPGlyphKerning::write(Inkscape::XML::Document *xml_doc, Inkscape::XML::Node *repr, guint flags)
+{
+    if ((flags & SP_OBJECT_WRITE_BUILD) && !repr) {
+        repr = xml_doc->createElement("svg:glyphkerning"); // fix this!
+    }
+
+    if (repr != this->getRepr()) {
+        // All the COPY_ATTR functions below use
+        // XML Tree directly, while they shouldn't.
+        COPY_ATTR(repr, this->getRepr(), "u1");
+        COPY_ATTR(repr, this->getRepr(), "g1");
+        COPY_ATTR(repr, this->getRepr(), "u2");
+        COPY_ATTR(repr, this->getRepr(), "g2");
+        COPY_ATTR(repr, this->getRepr(), "k");
+    }
+    SPObject::write(xml_doc, repr, flags);
+
+    return repr;
+}
+
+/*
+  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 :