From b700f7c248cb95fa66ee500eb07c2abef76e65bc Mon Sep 17 00:00:00 2001
From: jean-pierre charras <jp.charras@wanadoo.fr>
Date: Thu, 23 Dec 2010 11:00:55 +0100
Subject: [PATCH] fix bug 692240: a subtle bug in
 LIB_COMPONENT::LocateDrawItem() that destroys DefaultTransform matrix.

---
 eeschema/class_libentry.cpp | 19 ++-----------------
 eeschema/sch_component.cpp  | 17 +++++++++--------
 eeschema/schedit.cpp        |  2 +-
 3 files changed, 12 insertions(+), 26 deletions(-)

diff --git a/eeschema/class_libentry.cpp b/eeschema/class_libentry.cpp
index f69cb03611..93de037539 100644
--- a/eeschema/class_libentry.cpp
+++ b/eeschema/class_libentry.cpp
@@ -1361,27 +1361,12 @@ LIB_DRAW_ITEM* LIB_COMPONENT::LocateDrawItem( int aUnit, int aConvert, KICAD_T a
      * we temporary copy aTransMat in DefaultTransformMatrix
      */
     LIB_DRAW_ITEM* item;
-    TRANSFORM transform;
-
-    for ( int ii = 0; ii < 2; ii++ )
-    {
-        for ( int jj = 0; jj < 2; jj++ )
-        {
-            transform = DefaultTransform;
-            DefaultTransform = aTransform;
-        }
-    }
+    TRANSFORM transform = DefaultTransform;
 
     item = LocateDrawItem( aUnit, aConvert, aType, aPoint );
 
     //Restore matrix
-    for ( int ii = 0; ii < 2; ii++ )
-    {
-        for ( int jj = 0; jj < 2; jj++ )
-        {
-            DefaultTransform = transform;
-        }
-    }
+    DefaultTransform = transform;
 
     return item;
 }
diff --git a/eeschema/sch_component.cpp b/eeschema/sch_component.cpp
index 379cc4321c..1795bace79 100644
--- a/eeschema/sch_component.cpp
+++ b/eeschema/sch_component.cpp
@@ -685,40 +685,41 @@ void SCH_COMPONENT::ClearAnnotation( SCH_SHEET_PATH* aSheet )
 
 void SCH_COMPONENT::SetOrientation( int aOrientation )
 {
+
     TRANSFORM temp = TRANSFORM();
     bool Transform = false;
 
     switch( aOrientation )
     {
     case CMP_ORIENT_0:
-    case CMP_NORMAL:            /* Position Initiale */
+    case CMP_NORMAL:                    // default transform matrix
         m_transform.x1 = 1;
         m_transform.y2 = -1;
         m_transform.x2 = m_transform.y1 = 0;
         break;
 
-    case CMP_ROTATE_CLOCKWISE:            /* Rotate + */
+    case CMP_ROTATE_CLOCKWISE:            // Rotate + (incremental rotation)
         temp.x1   = temp.y2 = 0;
         temp.y1   = 1;
         temp.x2   = -1;
         Transform = true;
         break;
 
-    case CMP_ROTATE_COUNTERCLOCKWISE:             /* Rotate - */
+    case CMP_ROTATE_COUNTERCLOCKWISE:    // Rotate - (incremental rotation)
         temp.x1   = temp.y2 = 0;
         temp.y1   = -1;
         temp.x2   = 1;
         Transform = true;
         break;
 
-    case CMP_MIRROR_Y:          /* MirrorY */
+    case CMP_MIRROR_Y:                  // Mirror Y (incremental rotation)
         temp.x1   = -1;
         temp.y2   = 1;
         temp.y1   = temp.x2 = 0;
         Transform = true;
         break;
 
-    case CMP_MIRROR_X:            /* MirrorX */
+    case CMP_MIRROR_X:                  // Mirror X (incremental rotation)
         temp.x1   = 1;
         temp.y2   = -1;
         temp.y1   = temp.x2 = 0;
@@ -790,14 +791,14 @@ void SCH_COMPONENT::SetOrientation( int aOrientation )
     if( Transform )
     {
         /* The new matrix transform is the old matrix transform modified by the
-         *  requested transformation, which is the TempMat transform (rot,
+         *  requested transformation, which is the temp transform (rot,
          *  mirror ..) in order to have (in term of matrix transform):
          *     transform coord = new_m_transform * coord
          *  where transform coord is the coord modified by new_m_transform from
          *  the initial value coord.
-         *  new_m_transform is computed (from old_m_transform and TempMat) to
+         *  new_m_transform is computed (from old_m_transform and temp) to
          *  have:
-         *     transform coord = old_m_transform * coord * TempMat
+         *     transform coord = old_m_transform * temp
          */
         TRANSFORM newTransform;
 
diff --git a/eeschema/schedit.cpp b/eeschema/schedit.cpp
index a024327ea2..507e20eee3 100644
--- a/eeschema/schedit.cpp
+++ b/eeschema/schedit.cpp
@@ -381,7 +381,7 @@ void SCH_EDIT_FRAME::Process_Special_Functions( wxCommandEvent& event )
 
     case ID_POPUP_IMPORT_GLABEL:
         if( screen->GetCurItem() && screen->GetCurItem()->Type() == SCH_SHEET_T )
-            GetScreen()->SetCurItem( Import_PinSheet( (SCH_SHEET*) screen->GetCurItem(), &dc ) );
+            screen->SetCurItem( Import_PinSheet( (SCH_SHEET*) screen->GetCurItem(), &dc ) );
         break;
 
     case ID_POPUP_SCH_CLEANUP_SHEET: