From 803e249e999ab90caf2e3d61cc6782aa7dd3caba Mon Sep 17 00:00:00 2001
From: Matthew Petroff <matthew@mpetroff.net>
Date: Sun, 15 Sep 2013 15:00:40 -0400
Subject: Fix document unit change for transformed flow text and transformed
 text on path.

(bzr r12475.1.18)
---
 src/sp-flowtext.cpp   |  8 +++++++-
 src/sp-flowtext.h     |  6 ++++++
 src/sp-item-group.cpp | 25 +++++++++++++++++--------
 3 files changed, 30 insertions(+), 9 deletions(-)

diff --git a/src/sp-flowtext.cpp b/src/sp-flowtext.cpp
index 304d749c2..4fc922a82 100644
--- a/src/sp-flowtext.cpp
+++ b/src/sp-flowtext.cpp
@@ -86,6 +86,8 @@ sp_flowtext_init(SPFlowtext *group)
 {
     group->par_indent = 0;
     new (&group->layout) Inkscape::Text::Layout();
+    
+    group->_optimizeScaledText = false;
 }
 
 static void
@@ -706,9 +708,13 @@ SPItem *create_flowtext_with_internal_frame (SPDesktop *desktop, Geom::Point p0,
 static Geom::Affine
 sp_flowtext_set_transform (SPItem *item, Geom::Affine const &xform)
 {
-    if (!xform.isNonzeroUniformScale()) {
+    SPFlowtext *ft = SP_FLOWTEXT(item);
+    if ((ft->_optimizeScaledText && !xform.withoutTranslation().isNonzeroUniformScale())
+        || (!ft->_optimizeScaledText && !xform.isNonzeroUniformScale())) {
+        ft->_optimizeScaledText = false;
         return xform;
     }
+    ft->_optimizeScaledText = false;
     
     SPText *text = reinterpret_cast<SPText *>(item);
     
diff --git a/src/sp-flowtext.h b/src/sp-flowtext.h
index 944503a1e..6857f5760 100644
--- a/src/sp-flowtext.h
+++ b/src/sp-flowtext.h
@@ -43,6 +43,12 @@ struct SPFlowtext : public SPItem {
 
     double par_indent;
 
+    bool _optimizeScaledText;
+
+    /** Optimize scaled flow text on next set_transform. */
+    void optimizeScaledText()
+        {_optimizeScaledText = true;}
+
 private:
     /** Recursively walks the xml tree adding tags and their contents. */
     void _buildLayoutInput(SPObject *root, Shape const *exclusion_shape, std::list<Shape> *shapes, SPObject **pending_line_break_object);
diff --git a/src/sp-item-group.cpp b/src/sp-item-group.cpp
index be62764c3..1b8af43e1 100644
--- a/src/sp-item-group.cpp
+++ b/src/sp-item-group.cpp
@@ -51,8 +51,8 @@
 #include "sp-defs.h"
 #include "verbs.h"
 #include "layer-model.h"
-#include "selection-chemistry.h"
 #include "sp-textpath.h"
+#include "sp-flowtext.h"
 
 using Inkscape::DocumentUndo;
 
@@ -585,18 +585,27 @@ void SPGroup::scaleChildItemsRec(Geom::Scale const &sc, Geom::Point const &p)
                             old_center = item->getCenter();
                         }
                         
-                        if (SP_IS_TEXT_TEXTPATH(item) && item->transform.isIdentity()) {
-                            if (item->transform.isIdentity()) {
-                                SP_TEXT(item)->optimizeTextpathText();
-                            } else {
-                                // TODO: transformed text on textpath
-                            }
+                        if (SP_IS_TEXT_TEXTPATH(item)) {
+                            SP_TEXT(item)->optimizeTextpathText();
+                        } else if (SP_IS_FLOWTEXT(item)) {
+                            SP_FLOWTEXT(item)->optimizeScaledText();
                         } else if (SP_IS_BOX3D(item)) {
                             // Force recalculation from perspective
                             box3d_position_set(SP_BOX3D(item));
                         }
                         
-                        if (SP_IS_USE(item)) {
+                        if ((SP_IS_TEXT_TEXTPATH(item) || SP_IS_FLOWTEXT(item)) && !item->transform.isIdentity()) {
+                            // Save and reset current transform
+                            Geom::Affine tmp(item->transform);
+                            item->transform = Geom::Affine();
+                            // Apply scale
+                            item->set_i2d_affine(item->i2dt_affine() * sc);
+                            item->doWriteTransform(item->getRepr(), item->transform, NULL, true);
+                            // Scale translation and restore original transform
+                            tmp[4] *= sc[0];
+                            tmp[5] *= sc[1];
+                            item->doWriteTransform(item->getRepr(), tmp, NULL, true);
+                        } else if (SP_IS_USE(item)) {
                             // calculate the matrix we need to apply to the clone
                             // to cancel its induced transform from its original
                             Geom::Affine move = final.inverse() * item->transform * final;
-- 
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