Merge Google Summer of Code unit improvement.

(bzr r12554)

1 files changed, 78 insertions, 0 deletions

diff --git a/src/sp-item-group.cpp b/src/sp-item-group.cpp
index 5c176d2dc..720f6857a 100644
--- a/src/sp-item-group.cpp
+++ b/src/sp-item-group.cpp
@@ -50,6 +50,9 @@
 #include "sp-switch.h"
 #include "sp-defs.h"
 #include "verbs.h"
+#include "layer-model.h"
+#include "sp-textpath.h"
+#include "sp-flowtext.h"
 
 using Inkscape::DocumentUndo;
 
@@ -644,6 +647,81 @@ void SPGroup::translateChildItems(Geom::Translate const &tr)
     }
 }
 
+// Recursively scale child items around a point
+void SPGroup::scaleChildItemsRec(Geom::Scale const &sc, Geom::Point const &p)
+{
+    if ( hasChildren() ) {
+        for (SPObject *o = firstChild() ; o ; o = o->getNext() ) {
+            if ( SP_IS_ITEM(o) ) {
+                if (SP_IS_GROUP(o) && !SP_IS_BOX3D(o)) {
+                    SP_GROUP(o)->scaleChildItemsRec(sc, p);
+                } else {
+                    SPItem *item = SP_ITEM(o);
+                    Geom::OptRect bbox = item->desktopVisualBounds();
+                    if (bbox) {
+                        // Scale item
+                        Geom::Translate const s(p);
+                        Geom::Affine final = s.inverse() * sc * s;
+                        
+                        Geom::Point old_center(0,0);
+                        if (item->isCenterSet()) {
+                            old_center = item->getCenter();
+                        }
+                        
+                        gchar const *conn_type = NULL;
+                        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));
+                        } else if (item->getAttribute("inkscape:connector-type") != NULL
+                            && (item->getAttribute("inkscape:connection-start") == NULL
+                                || item->getAttribute("inkscape:connection-end") == NULL)) {
+                            // Remove and store connector type for transform if disconnected
+                            conn_type = item->getAttribute("inkscape:connector-type");
+                            item->removeAttribute("inkscape:connector-type");
+                        }
+                        
+                        if (SP_IS_PERSP3D(item)) {
+                            persp3d_apply_affine_transformation(SP_PERSP3D(item), final);
+                        } else 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;
+                            item->doWriteTransform(item->getRepr(), move, &move, true);
+                        } else {
+                            item->set_i2d_affine(item->i2dt_affine() * final);
+                            item->doWriteTransform(item->getRepr(), item->transform, NULL, true);
+                        }
+                        
+                        if (conn_type != NULL) {
+                            item->setAttribute("inkscape:connector-type", conn_type);
+                        }
+                        
+                        if (item->isCenterSet() && !(final.isTranslation() || final.isIdentity())) {
+                            item->setCenter(old_center * final);
+                            item->updateRepr();
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
 gint SPGroup::getItemCount() {
     gint len = 0;
     for (SPObject *o = this->firstChild() ; o ; o = o->getNext() ) {