1 files changed, 164 insertions, 0 deletions
diff --git a/src/object/filters/distantlight.cpp b/src/object/filters/distantlight.cpp
new file mode 100644
index 0000000..b438e46
--- /dev/null
+++ b/src/object/filters/distantlight.cpp
@@ -0,0 +1,164 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** \file
+ * SVG <fedistantlight> implementation.
+ */
+/*
+ * Authors:
+ *   Hugo Rodrigues <haa.rodrigues@gmail.com>
+ *   Niko Kiirala <niko@kiirala.com>
+ *   Jean-Rene Reinhard <jr@komite.net>
+ *   Abhishek Sharma
+ *
+ * Copyright (C) 2006,2007 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <glib.h>
+
+// In same directory
+#include "distantlight.h"
+#include "diffuselighting.h"
+#include "specularlighting.h"
+
+#include "attributes.h"
+#include "document.h"
+
+#include "xml/repr.h"
+
+SPFeDistantLight::SPFeDistantLight()
+    : SPObject(), azimuth(0), azimuth_set(FALSE), elevation(0), elevation_set(FALSE) {
+}
+
+SPFeDistantLight::~SPFeDistantLight() = default;
+
+/**
+ * Reads the Inkscape::XML::Node, and initializes SPDistantLight variables.  For this to get called,
+ * our name must be associated with a repr via "sp_object_type_register".  Best done through
+ * sp-object-repr.cpp's repr_name_entries array.
+ */
+void SPFeDistantLight::build(SPDocument *document, Inkscape::XML::Node *repr) {
+	SPObject::build(document, repr);
+
+    //Read values of key attributes from XML nodes into object.
+    this->readAttr(SPAttr::AZIMUTH);
+    this->readAttr(SPAttr::ELEVATION);
+
+//is this necessary?
+    document->addResource("fedistantlight", this);
+}
+
+/**
+ * Drops any allocated memory.
+ */
+void SPFeDistantLight::release() {
+    if ( this->document ) {
+        // Unregister ourselves
+        this->document->removeResource("fedistantlight", this);
+    }
+
+//TODO: release resources here
+}
+
+/**
+ * Sets a specific value in the SPFeDistantLight.
+ */
+void SPFeDistantLight::set(SPAttr key, gchar const *value) {
+    gchar *end_ptr;
+
+    switch (key) {
+    case SPAttr::AZIMUTH:
+        end_ptr =nullptr;
+
+        if (value) {
+            this->azimuth = g_ascii_strtod(value, &end_ptr);
+
+            if (end_ptr) {
+                this->azimuth_set = TRUE;
+            }
+        }
+
+        if (!value || !end_ptr) {
+                this->azimuth_set = FALSE;
+                this->azimuth = 0;
+        }
+
+        if (this->parent &&
+                (SP_IS_FEDIFFUSELIGHTING(this->parent) ||
+                 SP_IS_FESPECULARLIGHTING(this->parent))) {
+            this->parent->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
+        }
+        break;
+    case SPAttr::ELEVATION:
+        end_ptr =nullptr;
+
+        if (value) {
+            this->elevation = g_ascii_strtod(value, &end_ptr);
+
+            if (end_ptr) {
+                this->elevation_set = TRUE;
+            }
+        }
+
+        if (!value || !end_ptr) {
+                this->elevation_set = FALSE;
+                this->elevation = 0;
+        }
+
+        if (this->parent &&
+                (SP_IS_FEDIFFUSELIGHTING(this->parent) ||
+                 SP_IS_FESPECULARLIGHTING(this->parent))) {
+            this->parent->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
+        }
+        break;
+    default:
+        // See if any parents need this value.
+    	SPObject::set(key, value);
+        break;
+    }
+}
+
+/**
+ *  * Receives update notifications.
+ *   */
+void SPFeDistantLight::update(SPCtx *ctx, guint flags) {
+    if (flags & SP_OBJECT_MODIFIED_FLAG) {
+        /* do something to trigger redisplay, updates? */
+        this->readAttr(SPAttr::AZIMUTH);
+        this->readAttr(SPAttr::ELEVATION);
+    }
+
+    SPObject::update(ctx, flags);
+}
+
+/**
+ * Writes its settings to an incoming repr object, if any.
+ */
+Inkscape::XML::Node* SPFeDistantLight::write(Inkscape::XML::Document *doc, Inkscape::XML::Node *repr, guint flags) {
+    if (!repr) {
+        repr = this->getRepr()->duplicate(doc);
+    }
+
+    if (this->azimuth_set) {
+        repr->setAttributeCssDouble("azimuth", this->azimuth);
+    }
+
+    if (this->elevation_set) {
+        repr->setAttributeCssDouble("elevation", this->elevation);
+    }
+
+    SPObject::write(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:fileencoding=utf-8:textwidth=99 :