Merge pull request #1 from saurabhb17/develop

Added main functions

1 files changed, 1236 insertions, 0 deletions

diff --git a/eeschema/sch_sheet.cpp b/eeschema/sch_sheet.cpp
new file mode 100644
index 0000000..0a03994
--- /dev/null
+++ b/eeschema/sch_sheet.cpp
@@ -0,0 +1,1236 @@
+/*
+ * This program source code file is part of KiCad, a free EDA CAD application.
+ *
+ * Copyright (C) 2009 Jean-Pierre Charras, jp.charras at wanadoo.fr
+ * Copyright (C) 1992-2011 Kicad Developers, see AUTHORS.txt for contributors.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, you may find one here:
+ * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
+ * or you may search the http://www.gnu.org website for the version 2 license,
+ * or you may write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ */
+
+/**
+ * @file sch_sheet.cpp
+ * @brief Implementation of SCH_SHEET class.
+ */
+
+#include <fctsys.h>
+#include <class_drawpanel.h>
+#include <drawtxt.h>
+#include <trigo.h>
+#include <richio.h>
+#include <schframe.h>
+#include <plot_common.h>
+#include <kicad_string.h>
+#include <msgpanel.h>
+
+#include <sch_sheet.h>
+#include <sch_sheet_path.h>
+#include <sch_component.h>
+#include <class_netlist_object.h>
+
+
+SCH_SHEET::SCH_SHEET( const wxPoint& pos ) :
+    SCH_ITEM( NULL, SCH_SHEET_T )
+{
+    m_Layer = LAYER_SHEET;
+    m_pos = pos;
+    m_size = wxSize( MIN_SHEET_WIDTH, MIN_SHEET_HEIGHT );
+    SetTimeStamp( GetNewTimeStamp() );
+    m_sheetNameSize = GetDefaultTextSize();
+    m_fileNameSize = GetDefaultTextSize();
+    m_screen = NULL;
+    m_name.Printf( wxT( "Sheet%8.8lX" ), (long) m_TimeStamp );
+    m_fileName.Printf( wxT( "file%8.8lX.sch" ), (long) m_TimeStamp );
+}
+
+
+SCH_SHEET::SCH_SHEET( const SCH_SHEET& aSheet ) :
+    SCH_ITEM( aSheet )
+{
+    m_pos = aSheet.m_pos;
+    m_size = aSheet.m_size;
+    m_Layer = aSheet.m_Layer;
+    SetTimeStamp( aSheet.m_TimeStamp );
+    m_sheetNameSize = aSheet.m_sheetNameSize;
+    m_fileNameSize = aSheet.m_fileNameSize;
+    m_screen = aSheet.m_screen;
+    m_name = aSheet.m_name;
+    m_fileName = aSheet.m_fileName;
+    m_pins = aSheet.m_pins;
+
+    for( size_t i = 0;  i < m_pins.size();  i++ )
+        m_pins[i].SetParent( this );
+
+    if( m_screen )
+        m_screen->IncRefCount();
+}
+
+
+SCH_SHEET::~SCH_SHEET()
+{
+//    wxLogDebug( wxT( "Destroying sheet " ) + m_name );
+
+    // also, look at the associated sheet & its reference count
+    // perhaps it should be deleted also.
+    if( m_screen )
+    {
+        m_screen->DecRefCount();
+
+        if( m_screen->GetRefCount() == 0 )
+            delete m_screen;
+    }
+}
+
+
+EDA_ITEM* SCH_SHEET::Clone() const
+{
+    return new SCH_SHEET( *this );
+}
+
+
+void SCH_SHEET::SetScreen( SCH_SCREEN* aScreen )
+{
+    if( aScreen == m_screen )
+        return;
+
+    if( m_screen != NULL )
+    {
+        m_screen->DecRefCount();
+
+        if( m_screen->GetRefCount() == 0 )
+        {
+            delete m_screen;
+            m_screen = NULL;
+        }
+    }
+
+    m_screen = aScreen;
+
+    if( m_screen )
+        m_screen->IncRefCount();
+}
+
+
+int SCH_SHEET::GetScreenCount() const
+{
+    if( m_screen == NULL )
+        return 0;
+
+    return m_screen->GetRefCount();
+}
+
+
+bool SCH_SHEET::Save( FILE* aFile ) const
+{
+    if( fprintf( aFile, "$Sheet\n" ) == EOF
+        || fprintf( aFile, "S %-4d %-4d %-4d %-4d\n",
+                    m_pos.x, m_pos.y, m_size.x, m_size.y ) == EOF )
+        return false;
+
+    //save the unique timestamp, like other schematic parts.
+    if( fprintf( aFile, "U %8.8lX\n", m_TimeStamp ) == EOF )
+        return false;
+
+    /* Save schematic sheetname and filename. */
+    if( !m_name.IsEmpty() )
+    {
+        if( fprintf( aFile, "F0 %s %d\n", EscapedUTF8( m_name ).c_str(),
+                     m_sheetNameSize ) == EOF )
+            return false;
+    }
+
+    if( !m_fileName.IsEmpty() )
+    {
+        if( fprintf( aFile, "F1 %s %d\n", EscapedUTF8( m_fileName ).c_str(),
+                     m_fileNameSize ) == EOF )
+            return false;
+    }
+
+    /* Save the list of labels in the sheet. */
+
+    BOOST_FOREACH( const SCH_SHEET_PIN& label, m_pins )
+    {
+        if( !label.Save( aFile ) )
+            return false;
+    }
+
+    if( fprintf( aFile, "$EndSheet\n" ) == EOF )
+        return false;
+
+    return true;
+}
+
+
+bool SCH_SHEET::Load( LINE_READER& aLine, wxString& aErrorMsg )
+{
+    int              fieldNdx, size;
+    SCH_SHEET_PIN*   sheetPin;
+    char*            ptcar;
+
+    SetTimeStamp( GetNewTimeStamp() );
+
+    // sheets are added to the GetDrawItems() like other schematic components.
+    // however, in order to preserve the hierarchy (through m_Parent pointers),
+    // a duplicate of the sheet is added to m_SubSheet array.
+    // must be a duplicate, references just work for a two-layer structure.
+    // this is accomplished through the Sync() function.
+
+    if( ((char*)aLine)[0] == '$' )   // line should be "$Sheet"
+    {
+        if( !aLine.ReadLine() )
+        {
+            aErrorMsg.Printf( wxT( "Read File Error" ) );
+            return false;
+        }
+    }
+
+    /* Next line: must be "S xx yy nn mm" with xx, yy = sheet position
+     *  ( upper left corner  ) et nn,mm = sheet size */
+    if( ( sscanf( &((char*)aLine)[1], "%d %d %d %d",
+                  &m_pos.x, &m_pos.y, &m_size.x, &m_size.y ) != 4 )
+        || ( ((char*)aLine)[0] != 'S' ) )
+    {
+        aErrorMsg.Printf( wxT( " ** Eeschema file sheet struct error at line %d, aborted\n" ),
+                          aLine.LineNumber() );
+
+        aErrorMsg << FROM_UTF8( ((char*)aLine) );
+        return false;
+    }
+
+    /* Read fields */
+    for( ; ; ) /* Analysis of lines "Fn" text. */
+    {
+        if( !aLine.ReadLine() )
+            return false;
+
+        if( ((char*)aLine)[0] == 'U' )
+        {
+            sscanf( ((char*)aLine) + 1, "%lX", &m_TimeStamp );
+            if( m_TimeStamp == 0 )  // zero is not unique!
+                SetTimeStamp( GetNewTimeStamp() );
+            continue;
+        }
+
+        if( ((char*)aLine)[0] != 'F' )
+            break;
+
+        sscanf( ((char*)aLine) + 1, "%d", &fieldNdx );
+
+        /* Read the field:
+         * If fieldNdx> = 2: Fn "text" t s posx posy
+         * If F0 "text" for SheetName
+         * F1 and "text" for filename
+         */
+        ptcar = ((char*)aLine);
+
+        while( *ptcar && ( *ptcar != '"' ) )
+            ptcar++;
+
+        if( *ptcar != '"' )
+        {
+            aErrorMsg.Printf( wxT( "Eeschema file sheet label F%d at line %d, aborted\n" ),
+                              fieldNdx, aLine.LineNumber() );
+            aErrorMsg << FROM_UTF8( (char*) aLine );
+            return false;
+        }
+
+        wxString sheetName;
+        ptcar += ReadDelimitedText( &sheetName, ptcar );
+
+        if( *ptcar == 0 )
+        {
+            aErrorMsg.Printf( wxT( "Eeschema file sheet field F at line %d, aborted\n" ),
+                              aLine.LineNumber() );
+            aErrorMsg << FROM_UTF8( (char*) aLine );
+            return false;
+        }
+
+        if( ( fieldNdx == 0 ) || ( fieldNdx == 1 ) )
+        {
+            if( sscanf( ptcar, "%d", &size ) != 1 )
+            {
+                aErrorMsg.Printf( wxT( "Eeschema file sheet Label error line %d, aborted\n" ),
+                                  aLine.LineNumber() );
+
+                aErrorMsg << FROM_UTF8( (char*) aLine );
+            }
+
+            if( size == 0 )
+                size = GetDefaultTextSize();
+
+            if( fieldNdx == 0 )
+            {
+                m_name     = sheetName;
+                m_sheetNameSize = size;
+            }
+            else
+            {
+                SetFileName( sheetName );
+                m_fileNameSize = size;
+            }
+        }
+
+        if( fieldNdx > 1 )
+        {
+            sheetPin = new SCH_SHEET_PIN( this );
+
+            if( !sheetPin->Load( aLine, aErrorMsg ) )
+            {
+                delete sheetPin;
+                sheetPin = NULL;
+                return false;
+            }
+
+            AddPin( sheetPin );
+        }
+    }
+
+    if( strnicmp( "$End", ((char*)aLine), 4 ) != 0 )
+    {
+        aErrorMsg.Printf( wxT( "**Eeschema file end_sheet struct error at line %d, aborted\n" ),
+                          aLine.LineNumber() );
+        aErrorMsg << FROM_UTF8( ((char*)aLine) );
+        return false;
+    }
+
+    return true;
+}
+
+
+void SCH_SHEET::SwapData( SCH_ITEM* aItem )
+{
+    wxCHECK_RET( aItem->Type() == SCH_SHEET_T,
+                 wxString::Format( wxT( "SCH_SHEET object cannot swap data with %s object." ),
+                                   GetChars( aItem->GetClass() ) ) );
+
+    SCH_SHEET* sheet = ( SCH_SHEET* ) aItem;
+
+    std::swap( m_pos, sheet->m_pos );
+    std::swap( m_size, sheet->m_size );
+    std::swap( m_name, sheet->m_name );
+    std::swap( m_sheetNameSize, sheet->m_sheetNameSize );
+    std::swap( m_fileNameSize, sheet->m_fileNameSize );
+    m_pins.swap( sheet->m_pins );
+
+    // Ensure sheet labels have their .m_Parent member pointing really on their
+    // parent, after swapping.
+    BOOST_FOREACH( SCH_SHEET_PIN& sheetPin, m_pins )
+    {
+        sheetPin.SetParent( this );
+    }
+
+    BOOST_FOREACH( SCH_SHEET_PIN& sheetPin, sheet->m_pins )
+    {
+        sheetPin.SetParent( sheet );
+    }
+}
+
+
+void SCH_SHEET::AddPin( SCH_SHEET_PIN* aSheetPin )
+{
+    wxASSERT( aSheetPin != NULL );
+    wxASSERT( aSheetPin->Type() == SCH_SHEET_PIN_T );
+
+    m_pins.push_back( aSheetPin );
+    renumberPins();
+}
+
+
+void SCH_SHEET::RemovePin( SCH_SHEET_PIN* aSheetPin )
+{
+    wxASSERT( aSheetPin != NULL );
+    wxASSERT( aSheetPin->Type() == SCH_SHEET_PIN_T );
+
+    SCH_SHEET_PINS::iterator i;
+
+    for( i = m_pins.begin();  i < m_pins.end();  ++i )
+    {
+        if( *i == aSheetPin )
+        {
+            m_pins.erase( i );
+            renumberPins();
+            return;
+        }
+    }
+
+    wxLogDebug( wxT( "Fix me: attempt to remove label %s which is not in sheet %s." ),
+                GetChars( aSheetPin->GetShownText() ), GetChars( m_name ) );
+}
+
+
+bool SCH_SHEET::HasPin( const wxString& aName )
+{
+    BOOST_FOREACH( SCH_SHEET_PIN pin, m_pins )
+    {
+        if( pin.GetText().CmpNoCase( aName ) == 0 )
+            return true;
+    }
+
+    return false;
+}
+
+
+bool SCH_SHEET::IsVerticalOrientation() const
+{
+    BOOST_FOREACH( SCH_SHEET_PIN pin, m_pins )
+    {
+        if( pin.GetEdge() > 1 )
+            return true;
+    }
+    return false;
+}
+
+
+bool SCH_SHEET::HasUndefinedPins()
+{
+    BOOST_FOREACH( SCH_SHEET_PIN pin, m_pins )
+    {
+        /* Search the schematic for a hierarchical label corresponding to this sheet label. */
+        EDA_ITEM* DrawStruct  = m_screen->GetDrawItems();
+        const SCH_HIERLABEL* HLabel = NULL;
+
+        for( ; DrawStruct != NULL; DrawStruct = DrawStruct->Next() )
+        {
+            if( DrawStruct->Type() != SCH_HIERARCHICAL_LABEL_T )
+                continue;
+
+            HLabel = static_cast<SCH_HIERLABEL*>( DrawStruct );
+
+            if( pin.GetText().CmpNoCase( HLabel->GetText() ) == 0 )
+                break;  // Found!
+
+            HLabel = NULL;
+        }
+
+        if( HLabel == NULL )   // Corresponding hierarchical label not found.
+            return true;
+    }
+
+    return false;
+}
+
+
+int SCH_SHEET::GetMinWidth() const
+{
+    int width = MIN_SHEET_WIDTH;
+
+    for( size_t i = 0; i < m_pins.size();  i++ )
+    {
+        int edge = m_pins[i].GetEdge();
+
+        // Make sure pin is on right or left side of sheet.
+        if( edge >= 2 )
+            continue;
+
+        EDA_RECT rect = m_pins[i].GetBoundingBox();
+
+        if( width < rect.GetWidth() )
+            width = rect.GetWidth();
+
+        for( size_t j = 0; j < m_pins.size(); j++ )
+        {
+            if( (i == j) || (m_pins[i].GetPosition().y != m_pins[j].GetPosition().y) )
+                continue;
+
+            if( width < rect.GetWidth() + m_pins[j].GetBoundingBox().GetWidth() )
+            {
+                width = rect.GetWidth() + m_pins[j].GetBoundingBox().GetWidth();
+                break;
+            }
+        }
+    }
+
+    return width;
+}
+
+
+int SCH_SHEET::GetMinHeight() const
+{
+    int height = MIN_SHEET_HEIGHT;
+
+    for( size_t i = 0; i < m_pins.size();  i++ )
+    {
+        int pinY = m_pins[i].GetPosition().y - m_pos.y;
+
+        if( pinY > height )
+            height = pinY;
+    }
+
+    return height;
+}
+
+
+/**
+ * Delete sheet labels which do not have corresponding hierarchical label.
+ */
+void SCH_SHEET::CleanupSheet()
+{
+    SCH_SHEET_PINS::iterator i = m_pins.begin();
+
+    while( i != m_pins.end() )
+    {
+        /* Search the schematic for a hierarchical label corresponding to this sheet label. */
+        EDA_ITEM* DrawStruct = m_screen->GetDrawItems();
+        const SCH_HIERLABEL* HLabel = NULL;
+
+        for( ; DrawStruct != NULL; DrawStruct = DrawStruct->Next() )
+        {
+            if( DrawStruct->Type() != SCH_HIERARCHICAL_LABEL_T )
+                continue;
+
+            HLabel = static_cast<SCH_HIERLABEL*>( DrawStruct );
+
+            if( i->GetText().CmpNoCase( HLabel->GetText() ) == 0 )
+                break;  // Found!
+
+            HLabel = NULL;
+        }
+
+        if( HLabel == NULL )   // Hlabel not found: delete sheet label.
+            m_pins.erase( i );
+        else
+            ++i;
+    }
+}
+
+
+SCH_SHEET_PIN* SCH_SHEET::GetPin( const wxPoint& aPosition )
+{
+    BOOST_FOREACH( SCH_SHEET_PIN& pin, m_pins )
+    {
+        if( pin.HitTest( aPosition, 0 ) )
+            return &pin;
+    }
+
+    return NULL;
+}
+
+
+int SCH_SHEET::GetPenSize() const
+{
+    return GetDefaultLineThickness();
+}
+
+
+wxPoint SCH_SHEET::GetSheetNamePosition()
+{
+    wxPoint pos = m_pos;
+
+    if( IsVerticalOrientation() )
+    {
+        pos.x -= 8;
+        pos.y += m_size.y;
+    }
+    else
+    {
+        pos.y -= 8;
+    }
+
+    return pos;
+}
+
+
+wxPoint SCH_SHEET::GetFileNamePosition()
+{
+    wxPoint  pos = m_pos;
+    int      margin = GetPenSize() + 4;
+
+    if( IsVerticalOrientation() )
+    {
+        pos.x += m_size.x + margin;
+        pos.y += m_size.y;
+    }
+    else
+    {
+        pos.y += m_size.y + margin;
+    }
+
+    return pos;
+}
+
+
+void SCH_SHEET::Draw( EDA_DRAW_PANEL* aPanel, wxDC* aDC,
+                      const wxPoint& aOffset, GR_DRAWMODE aDrawMode, EDA_COLOR_T aColor )
+{
+    EDA_COLOR_T txtcolor;
+    wxString Text;
+    EDA_COLOR_T color;
+    int      name_orientation;
+    wxPoint  pos_sheetname,pos_filename;
+    wxPoint  pos = m_pos + aOffset;
+    int      lineWidth = GetPenSize();
+    EDA_RECT* clipbox  = aPanel? aPanel->GetClipBox() : NULL;
+
+    if( aColor >= 0 )
+        color = aColor;
+    else
+        color = GetLayerColor( m_Layer );
+
+    GRSetDrawMode( aDC, aDrawMode );
+
+    GRRect( clipbox, aDC, pos.x, pos.y,
+            pos.x + m_size.x, pos.y + m_size.y, lineWidth, color );
+
+    pos_sheetname = GetSheetNamePosition() + aOffset;
+    pos_filename = GetFileNamePosition() + aOffset;
+
+    if( IsVerticalOrientation() )
+        name_orientation = TEXT_ORIENT_VERT;
+    else
+        name_orientation = TEXT_ORIENT_HORIZ;
+
+    /* Draw text : SheetName */
+    if( aColor > 0 )
+        txtcolor = aColor;
+    else
+        txtcolor = GetLayerColor( LAYER_SHEETNAME );
+
+    Text = wxT( "Sheet: " ) + m_name;
+    DrawGraphicText( clipbox, aDC, pos_sheetname,
+                     txtcolor, Text, name_orientation,
+                     wxSize( m_sheetNameSize, m_sheetNameSize ),
+                     GR_TEXT_HJUSTIFY_LEFT, GR_TEXT_VJUSTIFY_BOTTOM, lineWidth,
+                     false, false );
+
+    /* Draw text : FileName */
+    if( aColor >= 0 )
+        txtcolor = aColor;
+    else
+        txtcolor = GetLayerColor( LAYER_SHEETFILENAME );
+
+    Text = wxT( "File: " ) + m_fileName;
+    DrawGraphicText( clipbox, aDC, pos_filename,
+                     txtcolor, Text, name_orientation,
+                     wxSize( m_fileNameSize, m_fileNameSize ),
+                     GR_TEXT_HJUSTIFY_LEFT, GR_TEXT_VJUSTIFY_TOP, lineWidth,
+                     false, false );
+
+
+    /* Draw text : SheetLabel */
+    BOOST_FOREACH( SCH_SHEET_PIN& sheetPin, m_pins )
+    {
+        if( !sheetPin.IsMoving() )
+            sheetPin.Draw( aPanel, aDC, aOffset, aDrawMode, aColor );
+    }
+}
+
+
+const EDA_RECT SCH_SHEET::GetBoundingBox() const
+{
+    wxPoint end;
+    EDA_RECT box( m_pos, m_size );
+    int      lineWidth = GetPenSize();
+
+    // Determine length of texts
+    wxString text    = wxT( "Sheet: " ) + m_name;
+    int      textlen  = GraphicTextWidth( text, m_sheetNameSize, false, lineWidth );
+    text = wxT( "File: " ) + m_fileName;
+    int      textlen2 = GraphicTextWidth( text, m_fileNameSize, false, lineWidth );
+
+    // Calculate bounding box X size:
+    textlen = std::max( textlen, textlen2 );
+    end.x = std::max( m_size.x, textlen );
+
+    // Calculate bounding box pos:
+    end.y = m_size.y;
+    end += m_pos;
+
+    // Move upper and lower limits to include texts:
+    box.SetY( box.GetY() - ( KiROUND( m_sheetNameSize * 1.3 ) + 8 ) );
+    end.y += KiROUND( m_fileNameSize * 1.3 ) + 8;
+
+    box.SetEnd( end );
+    box.Inflate( lineWidth / 2 );
+
+    return box;
+}
+
+
+int SCH_SHEET::ComponentCount()
+{
+    int n = 0;
+
+    if( m_screen )
+    {
+        EDA_ITEM* bs;
+
+        for( bs = m_screen->GetDrawItems(); bs != NULL; bs = bs->Next() )
+        {
+            if( bs->Type() == SCH_COMPONENT_T )
+            {
+                SCH_COMPONENT* Cmp = (SCH_COMPONENT*) bs;
+
+                if( Cmp->GetField( VALUE )->GetText().GetChar( 0 ) != '#' )
+                    n++;
+            }
+
+            if( bs->Type() == SCH_SHEET_T )
+            {
+                SCH_SHEET* sheet = (SCH_SHEET*) bs;
+                n += sheet->ComponentCount();
+            }
+        }
+    }
+
+    return n;
+}
+
+
+bool SCH_SHEET::SearchHierarchy( const wxString& aFilename, SCH_SCREEN** aScreen )
+{
+    if( m_screen )
+    {
+        EDA_ITEM* item = m_screen->GetDrawItems();
+
+        while( item )
+        {
+            if( item->Type() == SCH_SHEET_T )
+            {
+                SCH_SHEET* sheet = (SCH_SHEET*) item;
+
+                if( sheet->m_screen
+                    && sheet->m_screen->GetFileName().CmpNoCase( aFilename ) == 0 )
+                {
+                    *aScreen = sheet->m_screen;
+                    return true;
+                }
+
+                if( sheet->SearchHierarchy( aFilename, aScreen ) )
+                    return true;
+            }
+
+            item = item->Next();
+        }
+    }
+
+    return false;
+}
+
+
+bool SCH_SHEET::LocatePathOfScreen( SCH_SCREEN* aScreen, SCH_SHEET_PATH* aList )
+{
+    if( m_screen )
+    {
+        aList->Push( this );
+
+        if( m_screen == aScreen )
+            return true;
+
+        EDA_ITEM* strct = m_screen->GetDrawItems();
+
+        while( strct )
+        {
+            if( strct->Type() == SCH_SHEET_T )
+            {
+                SCH_SHEET* ss = (SCH_SHEET*) strct;
+
+                if( ss->LocatePathOfScreen( aScreen, aList ) )
+                    return true;
+            }
+
+            strct = strct->Next();
+        }
+
+        aList->Pop();
+    }
+    return false;
+}
+
+
+bool SCH_SHEET::Load( SCH_EDIT_FRAME* aFrame )
+{
+    bool success = true;
+
+    SCH_SCREEN* screen = NULL;
+    if( !m_screen )
+    {
+        g_RootSheet->SearchHierarchy( m_fileName, &screen );
+
+        if( screen )
+        {
+            SetScreen( screen );
+
+            //do not need to load the sub-sheets - this has already been done.
+        }
+        else
+        {
+            SetScreen( new SCH_SCREEN( &aFrame->Kiway() ) );
+
+            success = aFrame->LoadOneEEFile( m_screen, m_fileName );
+
+            if( success )
+            {
+                EDA_ITEM* bs = m_screen->GetDrawItems();
+
+                while( bs )
+                {
+                    if( bs->Type() == SCH_SHEET_T )
+                    {
+                        SCH_SHEET* sheetstruct = (SCH_SHEET*) bs;
+
+                        if( !sheetstruct->Load( aFrame ) )
+                            success = false;
+                    }
+
+                    bs = bs->Next();
+                }
+            }
+        }
+    }
+
+    return success;
+}
+
+
+int SCH_SHEET::CountSheets()
+{
+    int count = 1; //1 = this!!
+
+    if( m_screen )
+    {
+        EDA_ITEM* strct = m_screen->GetDrawItems();
+
+        for( ; strct; strct = strct->Next() )
+        {
+            if( strct->Type() == SCH_SHEET_T )
+            {
+                SCH_SHEET* subsheet = (SCH_SHEET*) strct;
+                count += subsheet->CountSheets();
+            }
+        }
+    }
+    return count;
+}
+
+
+wxString SCH_SHEET::GetFileName( void ) const
+{
+    return m_fileName;
+}
+
+
+void SCH_SHEET::GetMsgPanelInfo( MSG_PANEL_ITEMS& aList )
+{
+    aList.push_back( MSG_PANEL_ITEM( _( "Sheet Name" ), m_name, CYAN ) );
+    aList.push_back( MSG_PANEL_ITEM( _( "File Name" ), m_fileName, BROWN ) );
+
+#if 0   // Set to 1 to display the sheet time stamp (mainly for test)
+    wxString msg;
+    msg.Printf( wxT( "%.8X" ), m_TimeStamp );
+    aList.push_back( MSG_PANEL_ITEM( _( "Time Stamp" ), msg, BLUE ) );
+#endif
+}
+
+
+void SCH_SHEET::Rotate(wxPoint aPosition)
+{
+    RotatePoint( &m_pos, aPosition, 900 );
+    RotatePoint( &m_size.x, &m_size.y, 900 );
+
+    if( m_size.x < 0 )
+    {
+        m_pos.x += m_size.x;
+        m_size.x = -m_size.x;
+    }
+
+    if( m_size.y < 0 )
+    {
+        m_pos.y += m_size.y;
+        m_size.y = -m_size.y;
+    }
+
+    BOOST_FOREACH( SCH_SHEET_PIN& sheetPin, m_pins )
+    {
+        sheetPin.Rotate( aPosition );
+    }
+}
+
+
+void SCH_SHEET::MirrorX( int aXaxis_position )
+{
+    MIRROR( m_pos.y, aXaxis_position );
+    m_pos.y -= m_size.y;
+
+    BOOST_FOREACH( SCH_SHEET_PIN& sheetPin, m_pins )
+    {
+        sheetPin.MirrorX( aXaxis_position );
+    }
+}
+
+
+void SCH_SHEET::MirrorY( int aYaxis_position )
+{
+    MIRROR( m_pos.x, aYaxis_position );
+    m_pos.x -= m_size.x;
+
+    BOOST_FOREACH( SCH_SHEET_PIN& label, m_pins )
+    {
+        label.MirrorY( aYaxis_position );
+    }
+}
+
+void SCH_SHEET::SetPosition( const wxPoint& aPosition )
+{
+    // Remember the sheet and all pin sheet positions must be
+    // modified. So use Move function to do that.
+    Move( aPosition - m_pos );
+}
+
+
+
+void SCH_SHEET::Resize( const wxSize& aSize )
+{
+    if( aSize == m_size )
+        return;
+
+    m_size = aSize;
+
+    /* Move the sheet labels according to the new sheet size. */
+    BOOST_FOREACH( SCH_SHEET_PIN& label, m_pins )
+    {
+        label.ConstrainOnEdge( label.GetPosition() );
+    }
+}
+
+
+bool SCH_SHEET::Matches( wxFindReplaceData& aSearchData, void* aAuxData, wxPoint* aFindLocation )
+{
+    wxLogTrace( traceFindItem, wxT( "  item " ) + GetSelectMenuText() );
+
+    // Ignore the sheet file name if searching to replace.
+    if( !(aSearchData.GetFlags() & FR_SEARCH_REPLACE)
+        && SCH_ITEM::Matches( m_fileName, aSearchData ) )
+    {
+        if( aFindLocation )
+            *aFindLocation = GetFileNamePosition();
+
+        return true;
+    }
+
+    if( SCH_ITEM::Matches( m_name, aSearchData ) )
+    {
+        if( aFindLocation )
+            *aFindLocation = GetSheetNamePosition();
+
+        return true;
+    }
+
+    return false;
+}
+
+
+bool SCH_SHEET::Replace( wxFindReplaceData& aSearchData, void* aAuxData )
+{
+    return EDA_ITEM::Replace( aSearchData, m_name );
+}
+
+
+void SCH_SHEET::renumberPins()
+{
+    int id = 2;
+
+    BOOST_FOREACH( SCH_SHEET_PIN& pin, m_pins )
+    {
+        pin.SetNumber( id );
+        id++;
+    }
+}
+
+
+void SCH_SHEET::GetEndPoints( std::vector <DANGLING_END_ITEM>& aItemList )
+{
+    for( unsigned ii = 0; ii < GetPins().size(); ii++ )
+    {
+        SCH_SHEET_PIN &pinsheet = GetPins()[ii];
+
+        wxCHECK2_MSG( pinsheet.Type() == SCH_SHEET_PIN_T, continue,
+                      wxT( "Invalid item in schematic sheet pin list.  Bad programmer!" ) );
+
+        pinsheet.GetEndPoints( aItemList );
+    }
+}
+
+
+bool SCH_SHEET::IsDanglingStateChanged( std::vector< DANGLING_END_ITEM >& aItemList )
+{
+    bool currentState = IsDangling();
+
+    BOOST_FOREACH( SCH_SHEET_PIN& pinsheet, GetPins() )
+    {
+        pinsheet.IsDanglingStateChanged( aItemList );
+    }
+
+    return currentState != IsDangling();
+}
+
+
+bool SCH_SHEET::IsDangling() const
+{
+    // If any hierarchical label in the sheet is dangling, then the sheet is dangling.
+    for( size_t i = 0; i < GetPins().size(); i++ )
+    {
+        if( GetPins()[i].IsDangling() )
+            return true;
+    }
+
+    return false;
+}
+
+
+bool SCH_SHEET::IsSelectStateChanged( const wxRect& aRect )
+{
+    bool previousState = IsSelected();
+
+    EDA_RECT boundingBox = GetBoundingBox();
+
+    if( aRect.Intersects( boundingBox ) )
+        SetFlags( SELECTED );
+    else
+        ClearFlags( SELECTED );
+
+    return previousState != IsSelected();
+}
+
+
+void SCH_SHEET::GetConnectionPoints( std::vector< wxPoint >& aPoints ) const
+{
+    for( size_t i = 0; i < GetPins().size(); i++ )
+        aPoints.push_back( GetPins()[i].GetPosition() );
+}
+
+
+SEARCH_RESULT SCH_SHEET::Visit( INSPECTOR* aInspector, const void* aTestData,
+                                const KICAD_T aFilterTypes[] )
+{
+    KICAD_T stype;
+
+    for( const KICAD_T* p = aFilterTypes;  (stype = *p) != EOT;   ++p )
+    {
+        // If caller wants to inspect my type
+        if( stype == Type() )
+        {
+            if( SEARCH_QUIT == aInspector->Inspect( this, NULL ) )
+                return SEARCH_QUIT;
+        }
+        else if( stype == SCH_SHEET_PIN_T )
+        {
+            // Test the sheet labels.
+            for( size_t i = 0;  i < m_pins.size();  i++ )
+            {
+                if( SEARCH_QUIT == aInspector->Inspect( &m_pins[ i ], (void*) this ) )
+                    return SEARCH_QUIT;
+            }
+        }
+    }
+
+    return SEARCH_CONTINUE;
+}
+
+
+wxString SCH_SHEET::GetSelectMenuText() const
+{
+    wxString tmp;
+    tmp.Printf( _( "Hierarchical Sheet %s" ), GetChars( m_name ) );
+    return tmp;
+}
+
+
+bool SCH_SHEET::HitTest( const wxPoint& aPosition, int aAccuracy ) const
+{
+    EDA_RECT rect = GetBoundingBox();
+
+    rect.Inflate( aAccuracy );
+
+    return rect.Contains( aPosition );
+}
+
+
+bool SCH_SHEET::HitTest( const EDA_RECT& aRect, bool aContained, int aAccuracy ) const
+{
+    EDA_RECT rect = aRect;
+
+    rect.Inflate( aAccuracy );
+
+    if( aContained )
+        return rect.Contains( GetBoundingBox() );
+
+    return rect.Intersects( GetBoundingBox() );
+}
+
+
+wxPoint SCH_SHEET::GetResizePosition() const
+{
+    return wxPoint( m_pos.x + m_size.GetWidth(), m_pos.y + m_size.GetHeight() );
+}
+
+
+void SCH_SHEET::GetNetListItem( NETLIST_OBJECT_LIST& aNetListItems,
+                                SCH_SHEET_PATH*      aSheetPath )
+{
+    SCH_SHEET_PATH sheetPath = *aSheetPath;
+    sheetPath.Push( this );
+
+    for( size_t i = 0;  i < m_pins.size();  i++ )
+    {
+        NETLIST_OBJECT* item = new NETLIST_OBJECT();
+        item->m_SheetPathInclude = sheetPath;
+        item->m_SheetPath = *aSheetPath;
+        item->m_Comp = &m_pins[i];
+        item->m_Link = this;
+        item->m_Type = NET_SHEETLABEL;
+        item->m_ElectricalType = m_pins[i].GetShape();
+        item->m_Label = m_pins[i].GetText();
+        item->m_Start = item->m_End = m_pins[i].GetPosition();
+        aNetListItems.push_back( item );
+
+        if( IsBusLabel( m_pins[i].GetText() ) )
+            item->ConvertBusToNetListItems( aNetListItems );
+    }
+}
+
+
+void SCH_SHEET::Plot( PLOTTER* aPlotter )
+{
+    EDA_COLOR_T txtcolor = UNSPECIFIED_COLOR;
+    wxSize      size;
+    wxString    Text;
+    int         name_orientation;
+    wxPoint     pos_sheetname, pos_filename;
+    wxPoint     pos;
+
+    aPlotter->SetColor( GetLayerColor( GetLayer() ) );
+
+    int thickness = GetPenSize();
+    aPlotter->SetCurrentLineWidth( thickness );
+
+    aPlotter->MoveTo( m_pos );
+    pos = m_pos;
+    pos.x += m_size.x;
+
+    aPlotter->LineTo( pos );
+    pos.y += m_size.y;
+
+    aPlotter->LineTo( pos );
+    pos = m_pos;
+    pos.y += m_size.y;
+
+    aPlotter->LineTo( pos );
+    aPlotter->FinishTo( m_pos );
+
+    if( IsVerticalOrientation() )
+    {
+        pos_sheetname    = wxPoint( m_pos.x - 8, m_pos.y + m_size.y );
+        pos_filename     = wxPoint( m_pos.x + m_size.x + 4, m_pos.y + m_size.y );
+        name_orientation = TEXT_ORIENT_VERT;
+    }
+    else
+    {
+        pos_sheetname    = wxPoint( m_pos.x, m_pos.y - 4 );
+        pos_filename     = wxPoint( m_pos.x, m_pos.y + m_size.y + 4 );
+        name_orientation = TEXT_ORIENT_HORIZ;
+    }
+
+    /* Draw texts: SheetName */
+    Text = m_name;
+    size = wxSize( m_sheetNameSize, m_sheetNameSize );
+
+    //pos  = m_pos; pos.y -= 4;
+    thickness = GetDefaultLineThickness();
+    thickness = Clamp_Text_PenSize( thickness, size, false );
+
+    aPlotter->SetColor( GetLayerColor( LAYER_SHEETNAME ) );
+
+    bool italic = false;
+    aPlotter->Text( pos_sheetname, txtcolor, Text, name_orientation, size,
+                    GR_TEXT_HJUSTIFY_LEFT, GR_TEXT_VJUSTIFY_BOTTOM,
+                    thickness, italic, false );
+
+    /*Draw texts : FileName */
+    Text = GetFileName();
+    size = wxSize( m_fileNameSize, m_fileNameSize );
+    thickness = GetDefaultLineThickness();
+    thickness = Clamp_Text_PenSize( thickness, size, false );
+
+    aPlotter->SetColor( GetLayerColor( LAYER_SHEETFILENAME ) );
+
+    aPlotter->Text( pos_filename, txtcolor, Text, name_orientation, size,
+                    GR_TEXT_HJUSTIFY_LEFT, GR_TEXT_VJUSTIFY_TOP,
+                    thickness, italic, false );
+
+    aPlotter->SetColor( GetLayerColor( GetLayer() ) );
+
+    /* Draw texts : SheetLabel */
+    for( size_t i = 0; i < m_pins.size(); i++ )
+    {
+        m_pins[i].Plot( aPlotter );
+    }
+}
+
+
+SCH_ITEM& SCH_SHEET::operator=( const SCH_ITEM& aItem )
+{
+    wxLogDebug( wxT( "Sheet assignment operator." ) );
+
+    wxCHECK_MSG( Type() == aItem.Type(), *this,
+                 wxT( "Cannot assign object type " ) + aItem.GetClass() + wxT( " to type " ) +
+                 GetClass() );
+
+    if( &aItem != this )
+    {
+        SCH_ITEM::operator=( aItem );
+
+        SCH_SHEET* sheet = (SCH_SHEET*) &aItem;
+
+        m_pos = sheet->m_pos;
+        m_size = sheet->m_size;
+        m_name = sheet->m_name;
+        m_sheetNameSize = sheet->m_sheetNameSize;
+        m_fileNameSize = sheet->m_fileNameSize;
+        m_pins = sheet->m_pins;
+
+        // Ensure sheet labels have their #m_Parent member pointing really on their
+        // parent, after assigning.
+        BOOST_FOREACH( SCH_SHEET_PIN& sheetPin, m_pins )
+        {
+            sheetPin.SetParent( this );
+        }
+    }
+
+    return *this;
+}
+
+
+#if defined(DEBUG)
+
+void SCH_SHEET::Show( int nestLevel, std::ostream& os ) const
+{
+    // XML output:
+    wxString s = GetClass();
+
+    NestedSpace( nestLevel, os ) << '<' << s.Lower().mb_str() << ">" << " sheet_name=\""
+                                 << TO_UTF8( m_name ) << '"' << ">\n";
+
+    // show all the pins, and check the linked list integrity
+    BOOST_FOREACH( const SCH_SHEET_PIN& label, m_pins )
+    {
+        label.Show( nestLevel + 1, os );
+    }
+
+    NestedSpace( nestLevel, os ) << "</" << s.Lower().mb_str() << ">\n" << std::flush;
+}
+
+#endif