From 179fa413b047bede6e32109e2ce82437c5fb8d34 Mon Sep 17 00:00:00 2001
From: MenTaLguY <mental@rydia.net>
Date: Mon, 16 Jan 2006 02:36:01 +0000
Subject: moving trunk for module inkscape

(bzr r1)
---
 src/extension/internal/bluredge.cpp | 157 ++++++++++++++++++++++++++++++++++++
 1 file changed, 157 insertions(+)
 create mode 100644 src/extension/internal/bluredge.cpp

(limited to 'src/extension/internal/bluredge.cpp')

diff --git a/src/extension/internal/bluredge.cpp b/src/extension/internal/bluredge.cpp
new file mode 100644
index 000000000..3f230439a
--- /dev/null
+++ b/src/extension/internal/bluredge.cpp
@@ -0,0 +1,157 @@
+/**
+    \file bluredge.cpp
+ 
+    A plug-in to add an effect to blur the edges of an object. 
+*/
+/*
+ * Authors:
+ *   Ted Gould <ted@gould.cx>
+ *
+ * Copyright (C) 2005 Authors
+ *
+ * Released under GNU GPL, read the file 'COPYING' for more information
+ */
+
+#include "desktop.h"
+#include "selection.h"
+#include "helper/action.h"
+#include "prefs-utils.h"
+#include "path-chemistry.h"
+#include "sp-item.h"
+
+#include "util/glib-list-iterators.h"
+
+#include "extension/effect.h"
+#include "extension/system.h"
+
+
+#include "bluredge.h"
+
+namespace Inkscape {
+namespace Extension {
+namespace Internal {
+
+
+/**
+    \brief  A function to allocated anything -- just an example here
+    \param  module  Unused
+    \return Whether the load was sucessful
+*/
+bool
+BlurEdge::load (Inkscape::Extension::Extension *module)
+{
+    // std::cout << "Hey, I'm Blur Edge, I'm loading!" << std::endl;
+    return TRUE;
+}
+
+/**
+    \brief  This actually blurs the edge.
+    \param  module   The effect that was called (unused)
+    \param  document What should be edited.
+*/
+void
+BlurEdge::effect (Inkscape::Extension::Effect *module, Inkscape::UI::View::View *document)
+{
+    Inkscape::Selection * selection     = ((SPDesktop *)document)->selection;
+
+    float width = module->get_param_float("blur-width");
+    int   steps = module->get_param_int("num-steps");
+
+    double old_offset = prefs_get_double_attribute("options.defaultoffsetwidth", "value", 1.0);
+
+    using Inkscape::Util::GSListConstIterator;
+    // TODO need to properly refcount the items, at least
+    std::list<SPItem *> items;
+    items.insert<GSListConstIterator<SPItem *> >(items.end(), selection->itemList(), NULL);
+    selection->clear();
+
+    std::list<SPItem *> new_items;
+    for(std::list<SPItem *>::iterator item = items.begin();
+            item != items.end(); item++) {
+        SPItem * spitem = *item;
+
+        Inkscape::XML::Node * new_items[steps];
+        Inkscape::XML::Node * new_group = sp_repr_new("svg:g");
+        (SP_OBJECT_REPR(spitem)->parent())->appendChild(new_group);
+        /** \todo  Need to figure out how to get from XML::Node to SPItem */
+        /* new_items.push_back(); */
+
+        double orig_opacity = sp_repr_css_double_property(sp_repr_css_attr(SP_OBJECT_REPR(spitem), "style"), "opacity", 1.0);
+        char opacity_string[64];
+        g_ascii_formatd(opacity_string, sizeof(opacity_string), "%f",
+                        orig_opacity / (steps));
+
+        for (int i = 0; i < steps; i++) {
+            double offset = (width / (float)(steps - 1) * (float)i) - (width / 2.0);
+
+            new_items[i] = (SP_OBJECT_REPR(spitem))->duplicate();
+
+            SPCSSAttr * css = sp_repr_css_attr(new_items[i], "style");
+            sp_repr_css_set_property(css, "opacity", opacity_string);
+            sp_repr_css_change(new_items[i], css, "style");
+
+            new_group->appendChild(new_items[i]);
+            selection->add(new_items[i]);
+            sp_selected_path_to_curves();
+
+            if (offset < 0.0) {
+                /* Doing an inset here folks */
+                offset *= -1.0;
+                prefs_set_double_attribute("options.defaultoffsetwidth", "value", offset);
+                sp_action_perform(Inkscape::Verb::get(SP_VERB_SELECTION_INSET)->get_action(document), NULL);
+            } else if (offset == 0.0) {
+            } else {
+                prefs_set_double_attribute("options.defaultoffsetwidth", "value", offset);
+                sp_action_perform(Inkscape::Verb::get(SP_VERB_SELECTION_OFFSET)->get_action(document), NULL);
+            }
+
+            selection->clear();
+        }
+
+    }
+
+    prefs_set_double_attribute("options.defaultoffsetwidth", "value", old_offset);
+
+    selection->clear();
+    selection->add(items.begin(), items.end());
+    selection->add(new_items.begin(), new_items.end());
+
+    return;
+}
+
+Gtk::Widget *
+BlurEdge::prefs_effect(Inkscape::Extension::Effect * module, Inkscape::UI::View::View * view)
+{
+    return module->autogui();
+}
+
+void
+BlurEdge::init (void)
+{
+    Inkscape::Extension::build_from_mem(
+        "<inkscape-extension>\n"
+            "<name>Blur Edge</name>\n"
+            "<id>org.inkscape.effect.bluredge</id>\n"
+            "<param name=\"blur-width\" gui-text=\"Blur Width\" type=\"float\" min=\"1.0\" max=\"50.0\">1.0</param>\n"
+            "<param name=\"num-steps\" gui-text=\"Number of Steps\" type=\"int\" min=\"5\" max=\"100\">11</param>\n"
+            "<effect>\n"
+                "<object-type>all</object-type>\n"
+            "</effect>\n"
+        "</inkscape-extension>\n" , new BlurEdge());
+    return;
+}
+
+}; /* namespace Internal */
+}; /* namespace Extension */
+}; /* namespace Inkscape */
+
+/*
+  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 :
-- 
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