From 655fcebb893b44019786e7e9c7229975024f4d97 Mon Sep 17 00:00:00 2001
From: "Johan B. C. Engelen" <jbc.engelen@swissonline.ch>
Date: Sat, 22 Mar 2008 19:11:02 +0000
Subject: * add RegisteredTransformedPoint widget, that transforms the point
 before displaying/writing. This in order to keep them in SVG coordinate
 system in XML, but in canvas coord system in the spinbox * move Geom::Point
 XML writing to central place in ostringstream * add verb for LPE context

(bzr r5165)
---
 src/ui/widget/registered-widget.cpp | 47 +++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

(limited to 'src/ui/widget/registered-widget.cpp')

diff --git a/src/ui/widget/registered-widget.cpp b/src/ui/widget/registered-widget.cpp
index 3b36ea6bc..1de084f5d 100644
--- a/src/ui/widget/registered-widget.cpp
+++ b/src/ui/widget/registered-widget.cpp
@@ -467,6 +467,53 @@ RegisteredPoint::on_value_changed()
     _wr->setUpdating (false);
 }
 
+/*#########################################
+ * Registered TRANSFORMEDPOINT
+ */
+
+RegisteredTransformedPoint::~RegisteredTransformedPoint()
+{
+    _value_x_changed_connection.disconnect();
+    _value_y_changed_connection.disconnect();
+}
+
+RegisteredTransformedPoint::RegisteredTransformedPoint ( const Glib::ustring& label, const Glib::ustring& tip,
+                        const Glib::ustring& key, Registry& wr, Inkscape::XML::Node* repr_in,
+                        SPDocument* doc_in )
+    : RegisteredWidget<Point> (label, tip),
+      transform(Geom::identity())
+{
+    init_parent(key, wr, repr_in, doc_in);
+
+    setRange (-1e6, 1e6);
+    setDigits (2);
+    setIncrements(0.1, 1.0);
+    _value_x_changed_connection = signal_x_value_changed().connect (sigc::mem_fun (*this, &RegisteredTransformedPoint::on_value_changed));
+    _value_y_changed_connection = signal_y_value_changed().connect (sigc::mem_fun (*this, &RegisteredTransformedPoint::on_value_changed));
+}
+
+void
+RegisteredTransformedPoint::on_value_changed()
+{
+    if (setProgrammatically()) {
+        clearProgrammatically();
+        return;
+    }
+
+    if (_wr->isUpdating())
+        return;
+
+    _wr->setUpdating (true);
+
+    Geom::Point pos = getValue() * transform;
+
+    Inkscape::SVGOStringStream os;
+    os << pos;
+
+    write_to_xml(os.str().c_str());
+
+    _wr->setUpdating (false);
+}
 
 /*#########################################
  * Registered RANDOM
-- 
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