Patch from Jean-René Reinhard: support for feDiffuseLighting and

feSpecularLighting filter primitives

(bzr r3269)

1 files changed, 209 insertions, 0 deletions

diff --git a/src/sp-fedistantlight.cpp b/src/sp-fedistantlight.cpp
new file mode 100644
index 000000000..2b9ef8ff5
--- /dev/null
+++ b/src/sp-fedistantlight.cpp
@@ -0,0 +1,209 @@
+#define __SP_FEDISTANTLIGHT_CPP__
+
+/** \file
+ * SVG <fedistantlight> implementation.
+ */
+/*
+ * Authors:
+ *   Hugo Rodrigues <haa.rodrigues@gmail.com>
+ *   Niko Kiirala <niko@kiirala.com>
+ *   Jean-Rene Reinhard <jr@komite.net>
+ *
+ * Copyright (C) 2006,2007 Authors
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <glib.h>
+
+#include "attributes.h"
+#include "document.h"
+#include "sp-fedistantlight.h"
+#include "sp-fediffuselighting-fns.h"
+#include "sp-fespecularlighting-fns.h"
+#include "xml/repr.h"
+
+#define SP_MACROS_SILENT
+#include "macros.h"
+
+/* FeDistantLight class */
+
+static void sp_fedistantlight_class_init(SPFeDistantLightClass *klass);
+static void sp_fedistantlight_init(SPFeDistantLight *fedistantlight);
+
+static void sp_fedistantlight_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr);
+static void sp_fedistantlight_release(SPObject *object);
+static void sp_fedistantlight_set(SPObject *object, unsigned int key, gchar const *value);
+static void sp_fedistantlight_update(SPObject *object, SPCtx *ctx, guint flags);
+static Inkscape::XML::Node *sp_fedistantlight_write(SPObject *object, Inkscape::XML::Node *repr, guint flags);
+
+static SPObjectClass *feDistantLight_parent_class;
+
+GType
+sp_fedistantlight_get_type()
+{
+    static GType fedistantlight_type = 0;
+
+    if (!fedistantlight_type) {
+        GTypeInfo fedistantlight_info = {
+            sizeof(SPFeDistantLightClass),
+            NULL, NULL,
+            (GClassInitFunc) sp_fedistantlight_class_init,
+            NULL, NULL,
+            sizeof(SPFeDistantLight),
+            16,
+            (GInstanceInitFunc) sp_fedistantlight_init,
+            NULL,    /* value_table */
+        };
+        fedistantlight_type = g_type_register_static(SP_TYPE_OBJECT, "SPFeDistantLight", &fedistantlight_info, (GTypeFlags)0);
+    }
+    return fedistantlight_type;
+}
+
+static void
+sp_fedistantlight_class_init(SPFeDistantLightClass *klass)
+{
+
+    SPObjectClass *sp_object_class = (SPObjectClass *)klass;
+
+    feDistantLight_parent_class = (SPObjectClass*)g_type_class_peek_parent(klass);
+
+    sp_object_class->build = sp_fedistantlight_build;
+    sp_object_class->release = sp_fedistantlight_release;
+    sp_object_class->write = sp_fedistantlight_write;
+    sp_object_class->set = sp_fedistantlight_set;
+    sp_object_class->update = sp_fedistantlight_update;
+}
+
+static void
+sp_fedistantlight_init(SPFeDistantLight *fedistantlight)
+{
+    fedistantlight->azimuth = 0;
+    fedistantlight->elevation = 0;
+}
+
+/**
+ * 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.
+ */
+static void
+sp_fedistantlight_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr)
+{
+    if (((SPObjectClass *) feDistantLight_parent_class)->build) {
+        ((SPObjectClass *) feDistantLight_parent_class)->build(object, document, repr);
+    }
+
+    //Read values of key attributes from XML nodes into object.
+    sp_object_read_attr(object, "azimuth");
+    sp_object_read_attr(object, "elevation");
+
+//is this necessary?
+    sp_document_add_resource(document, "fedistantlight", object);
+}
+
+/**
+ * Drops any allocated memory.
+ */
+static void
+sp_fedistantlight_release(SPObject *object)
+{
+    //SPFeDistantLight *fedistantlight = SP_FEDISTANTLIGHT(object);
+
+    if (SP_OBJECT_DOCUMENT(object)) {
+        /* Unregister ourselves */
+        sp_document_remove_resource(SP_OBJECT_DOCUMENT(object), "fedistantlight", SP_OBJECT(object));
+    }
+
+//TODO: release resources here
+}
+
+/**
+ * Sets a specific value in the SPFeDistantLight.
+ */
+static void
+sp_fedistantlight_set(SPObject *object, unsigned int key, gchar const *value)
+{
+    SPFeDistantLight *fedistantlight = SP_FEDISTANTLIGHT(object);
+
+    switch (key) {
+    case SP_ATTR_AZIMUTH:
+        fedistantlight->azimuth = g_ascii_strtod(value, NULL);
+        if (object->parent &&
+                (SP_IS_FEDIFFUSELIGHTING(object->parent) ||
+                 SP_IS_FESPECULARLIGHTING(object->parent))) {
+            object->parent->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
+        }
+        break;
+    case SP_ATTR_ELEVATION:
+        fedistantlight->elevation = g_ascii_strtod(value, NULL);
+        if (object->parent &&
+                (SP_IS_FEDIFFUSELIGHTING(object->parent) ||
+                 SP_IS_FESPECULARLIGHTING(object->parent))) {
+            object->parent->parent->requestModified(SP_OBJECT_MODIFIED_FLAG);
+        }
+        break;
+    default:
+        // See if any parents need this value. 
+        if (((SPObjectClass *) feDistantLight_parent_class)->set) {
+            ((SPObjectClass *) feDistantLight_parent_class)->set(object, key, value);
+        }
+        break;
+    }
+}
+
+/**
+ *  * Receives update notifications.
+ *   */
+static void
+sp_fedistantlight_update(SPObject *object, SPCtx *ctx, guint flags)
+{
+    SPFeDistantLight *feDistantLight = SP_FEDISTANTLIGHT(object);
+
+    if (flags & SP_OBJECT_MODIFIED_FLAG) {
+        /* do something to trigger redisplay, updates? */
+        sp_object_read_attr(object, "azimuth");
+        sp_object_read_attr(object, "elevation");
+    }
+    
+    if (((SPObjectClass *) feDistantLight_parent_class)->update) {
+        ((SPObjectClass *) feDistantLight_parent_class)->update(object, ctx, flags);
+    }
+}
+
+/**
+ * Writes its settings to an incoming repr object, if any.
+ */
+static Inkscape::XML::Node *
+sp_fedistantlight_write(SPObject *object, Inkscape::XML::Node *repr, guint flags)
+{
+    SPFeDistantLight *fedistantlight = SP_FEDISTANTLIGHT(object);
+
+    if (!repr) {
+        repr = SP_OBJECT_REPR(object)->duplicate(NULL); // FIXME
+    }
+
+    sp_repr_set_css_double(repr, "azimuth", fedistantlight->azimuth);
+    sp_repr_set_css_double(repr, "elevation", fedistantlight->elevation);
+    
+    if (((SPObjectClass *) feDistantLight_parent_class)->write) {
+        ((SPObjectClass *) feDistantLight_parent_class)->write(object, 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:encoding=utf-8:textwidth=99 :