Merge pull request #3 from saurabhb17/master

secondary files

1 files changed, 471 insertions, 0 deletions

diff --git a/common/base_screen.cpp b/common/base_screen.cpp
new file mode 100644
index 0000000..8fa0b7d
--- /dev/null
+++ b/common/base_screen.cpp
@@ -0,0 +1,471 @@
+/*
+ * This program source code file is part of KiCad, a free EDA CAD application.
+ *
+ * Copyright (C) 2012 Jean-Pierre Charras, jean-pierre.charras@ujf-grenoble.fr
+ * Copyright (C) 2012 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
+ * Copyright (C) 2012 Wayne Stambaugh <stambaughw@verizon.net>
+ * Copyright (C) 1992-2012 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 base_screen.cpp
+ * @brief BASE_SCREEN object implementation.
+ */
+
+#include <fctsys.h>
+#include <macros.h>
+#include <common.h>
+#include <base_struct.h>
+#include <class_base_screen.h>
+#include <id.h>
+#include <base_units.h>
+
+wxString BASE_SCREEN::m_PageLayoutDescrFileName;   // the name of the page layout descr file.
+
+BASE_SCREEN::BASE_SCREEN( KICAD_T aType ) :
+    EDA_ITEM( aType )
+{
+    m_UndoRedoCountMax = DEFAULT_MAX_UNDO_ITEMS;
+    m_FirstRedraw      = true;
+    m_ScreenNumber     = 1;
+    m_NumberOfScreens  = 1;      // Hierarchy: Root: ScreenNumber = 1
+    m_Zoom             = 32.0;
+    m_Grid.m_Size      = wxRealPoint( 50, 50 );   // Default grid size
+    m_Grid.m_CmdId     = ID_POPUP_GRID_LEVEL_50;
+    m_Center           = true;
+    m_IsPrinting       = false;
+    m_ScrollPixelsPerUnitX = 1;
+    m_ScrollPixelsPerUnitY = 1;
+
+    m_FlagModified     = false;     // Set when any change is made on board.
+    m_FlagSave         = false;     // Used in auto save set when an auto save is required.
+
+    SetCurItem( NULL );
+}
+
+
+BASE_SCREEN::~BASE_SCREEN()
+{
+}
+
+
+void BASE_SCREEN::InitDataPoints( const wxSize& aPageSizeIU )
+{
+    if( m_Center )
+    {
+        m_crossHairPosition.x = 0;
+        m_crossHairPosition.y = 0;
+
+        m_DrawOrg.x = -aPageSizeIU.x / 2;
+        m_DrawOrg.y = -aPageSizeIU.y / 2;
+    }
+    else
+    {
+        m_crossHairPosition.x = aPageSizeIU.x / 2;
+        m_crossHairPosition.y = aPageSizeIU.y / 2;
+
+        m_DrawOrg.x = 0;
+        m_DrawOrg.y = 0;
+    }
+
+    m_O_Curseur.x = m_O_Curseur.y = 0;
+}
+
+
+double BASE_SCREEN::GetScalingFactor() const
+{
+    double scale = 1.0 / GetZoom();
+    return scale;
+}
+
+
+void BASE_SCREEN::SetScalingFactor( double aScale )
+{
+    // Limit zoom to max and min allowed values:
+    double zoom = Clamp( GetMinAllowedZoom(), aScale, GetMaxAllowedZoom() );
+
+    SetZoom( zoom );
+}
+
+
+bool BASE_SCREEN::SetFirstZoom()
+{
+    return SetZoom( GetMinAllowedZoom() );
+}
+
+
+bool BASE_SCREEN::SetLastZoom()
+{
+    return SetZoom( GetMaxAllowedZoom() );
+}
+
+
+bool BASE_SCREEN::SetZoom( double iu_per_du )
+{
+    if( iu_per_du == m_Zoom )
+        return false;
+
+    //wxLogDebug( "Zoom:%.16g  1/Zoom:%.16g", iu_per_du, 1/iu_per_du );
+
+    if( iu_per_du < GetMinAllowedZoom() )
+        return false;
+
+    if( iu_per_du > GetMaxAllowedZoom() )
+        return false;
+
+    m_Zoom = iu_per_du;
+
+    return true;
+}
+
+
+bool BASE_SCREEN::SetNextZoom()
+{
+    for( unsigned i=0; i < m_ZoomList.size();  ++i )
+    {
+        if( m_Zoom < m_ZoomList[i] )
+        {
+            SetZoom( m_ZoomList[i] );
+            return true;
+        }
+    }
+
+    return false;
+}
+
+
+bool BASE_SCREEN::SetPreviousZoom()
+{
+    for( unsigned i = m_ZoomList.size(); i != 0;  --i )
+    {
+        if( m_Zoom > m_ZoomList[i - 1] )
+        {
+            SetZoom( m_ZoomList[i - 1] );
+            return true;
+        }
+    }
+
+    return false;
+}
+
+/* Build the list of human readable grid list.
+ * The list shows the grid size both in mils or mm.
+ * aMmFirst = true to have mm first and mils after
+ *            false to have mils first and mm after
+ */
+int BASE_SCREEN::BuildGridsChoiceList( wxArrayString& aGridsList, bool aMmFirst) const
+{
+    wxString msg;
+    wxRealPoint curr_grid_size = GetGridSize();
+    int idx = -1;
+    int idx_usergrid = -1;
+
+    for( size_t i = 0; i < GetGridCount(); i++ )
+    {
+        const GRID_TYPE& grid = m_grids[i];
+        double gridValueMils = To_User_Unit( INCHES, grid.m_Size.x ) * 1000;
+        double gridValue_mm = To_User_Unit( MILLIMETRES, grid.m_Size.x );
+
+        if( grid.m_CmdId == ID_POPUP_GRID_USER )
+        {
+            msg = _( "User Grid" );
+            idx_usergrid = i;
+        }
+        else
+        {
+            if( aMmFirst )
+                msg.Printf( _( "Grid: %.4f mm (%.2f mils)" ),
+                            gridValue_mm, gridValueMils );
+            else
+                msg.Printf( _( "Grid: %.2f mils (%.4f mm)" ),
+                            gridValueMils, gridValue_mm );
+        }
+
+        aGridsList.Add( msg );
+
+        if( curr_grid_size == grid.m_Size )
+            idx = i;
+    }
+
+    if( idx < 0 )
+        idx = idx_usergrid;
+
+    return idx;
+}
+
+
+void BASE_SCREEN::SetGridList( GRIDS& gridlist )
+{
+    if( !m_grids.empty() )
+        m_grids.clear();
+
+    m_grids = gridlist;
+}
+
+
+int BASE_SCREEN::SetGrid( const wxRealPoint& size )
+{
+    wxASSERT( !m_grids.empty() );
+
+    GRID_TYPE nearest_grid = m_grids[0];
+    int gridIdx = 0;
+
+    for( unsigned i = 0; i < m_grids.size(); i++ )
+    {
+        if( m_grids[i].m_Size == size )
+        {
+            m_Grid = m_grids[i];
+            return m_grids[i].m_CmdId - ID_POPUP_GRID_LEVEL_1000;
+        }
+
+        // keep track of the nearest larger grid size, if the exact size is not found
+        if ( size.x < m_grids[i].m_Size.x )
+        {
+            gridIdx = m_grids[i].m_CmdId - ID_POPUP_GRID_LEVEL_1000;
+            nearest_grid = m_grids[i];
+        }
+    }
+
+    m_Grid = nearest_grid;
+
+    wxLogWarning( wxT( "Grid size( %f, %f ) not in grid list, falling back " ) \
+                  wxT( "to grid size( %f, %f )." ),
+                  size.x, size.y, m_Grid.m_Size.x, m_Grid.m_Size.y );
+
+    return gridIdx;
+}
+
+
+int BASE_SCREEN::SetGrid( int aCommandId  )
+{
+    wxASSERT( !m_grids.empty() );
+
+    for( unsigned i = 0; i < m_grids.size(); i++ )
+    {
+        if( m_grids[i].m_CmdId == aCommandId )
+        {
+            m_Grid = m_grids[i];
+            return m_grids[i].m_CmdId - ID_POPUP_GRID_LEVEL_1000;
+        }
+    }
+
+    m_Grid = m_grids[0];
+
+    wxLogWarning( wxT( "Grid ID %d not in grid list, falling back to " ) \
+                  wxT( "grid size( %g, %g )." ), aCommandId,
+                  m_Grid.m_Size.x, m_Grid.m_Size.y );
+
+    return m_grids[0].m_CmdId - ID_POPUP_GRID_LEVEL_1000;
+}
+
+
+
+void BASE_SCREEN::AddGrid( const GRID_TYPE& grid )
+{
+    for( unsigned i = 0; i < m_grids.size(); i++ )
+    {
+        if( m_grids[i].m_Size == grid.m_Size && grid.m_CmdId != ID_POPUP_GRID_USER )
+        {
+            wxLogDebug( wxT( "Discarding duplicate grid size( %g, %g )." ),
+                        grid.m_Size.x, grid.m_Size.y );
+            return;
+        }
+
+        if( m_grids[i].m_CmdId == grid.m_CmdId )
+        {
+            wxLogDebug( wxT( "Changing grid ID %d from size( %g, %g ) to " ) \
+                        wxT( "size( %g, %g )." ),
+                        grid.m_CmdId, m_grids[i].m_Size.x,
+                        m_grids[i].m_Size.y, grid.m_Size.x, grid.m_Size.y );
+            m_grids[i].m_Size = grid.m_Size;
+            return;
+        }
+    }
+
+    m_grids.push_back( grid );
+}
+
+
+void BASE_SCREEN::AddGrid( const wxRealPoint& size, int id )
+{
+    GRID_TYPE grid;
+
+    grid.m_Size = size;
+    grid.m_CmdId = id;
+    AddGrid( grid );
+}
+
+
+void BASE_SCREEN::AddGrid( const wxRealPoint& size, EDA_UNITS_T aUnit, int id )
+{
+    wxRealPoint new_size;
+    GRID_TYPE new_grid;
+
+    new_size.x = From_User_Unit( aUnit, size.x );
+    new_size.y = From_User_Unit( aUnit, size.y );
+    new_grid.m_CmdId = id;
+    new_grid.m_Size = new_size;
+
+    AddGrid( new_grid );
+}
+
+
+GRID_TYPE& BASE_SCREEN::GetGrid( size_t aIndex )
+{
+    wxCHECK_MSG( !m_grids.empty() && aIndex < m_grids.size(), m_Grid,
+                 wxT( "Cannot get grid object outside the bounds of the grid list." ) );
+
+    return m_grids[ aIndex ];
+}
+
+
+bool BASE_SCREEN::GridExists( int aCommandId )
+{
+    // tests for grid command ID (not an index in grid list, but a wxID) exists in grid list.
+    for( unsigned i = 0; i < m_grids.size(); i++ )
+    {
+        if( m_grids[i].m_CmdId == aCommandId )
+            return true;
+    }
+
+    return false;
+}
+
+
+wxPoint BASE_SCREEN::getNearestGridPosition( const wxPoint& aPosition,
+    const wxPoint& aGridOrigin, wxRealPoint* aGridSize ) const
+{
+    wxPoint     pt;
+    wxRealPoint gridSize;
+
+    if( aGridSize )
+        gridSize = *aGridSize;
+    else
+        gridSize = GetGridSize();
+
+    double  offset = fmod( aGridOrigin.x, gridSize.x );
+    int x = KiROUND( (aPosition.x - offset) / gridSize.x );
+
+    pt.x = KiROUND( x * gridSize.x + offset );
+
+    offset = fmod( aGridOrigin.y, gridSize.y );
+
+    int y = KiROUND( (aPosition.y - offset) / gridSize.y );
+    pt.y = KiROUND ( y * gridSize.y + offset );
+
+    return pt;
+}
+
+
+wxPoint BASE_SCREEN::getCursorPosition( bool aOnGrid, const wxPoint& aGridOrigin, wxRealPoint* aGridSize ) const
+{
+    if( aOnGrid )
+        return getNearestGridPosition( m_crossHairPosition, aGridOrigin, aGridSize );
+
+    return m_crossHairPosition;
+}
+
+
+wxPoint BASE_SCREEN::getCrossHairScreenPosition() const
+{
+    wxPoint pos = m_crossHairPosition - m_DrawOrg;
+    double  scalar = GetScalingFactor();
+
+    pos.x = KiROUND( (double) pos.x * scalar );
+    pos.y = KiROUND( (double) pos.y * scalar );
+
+    return pos;
+}
+
+
+void BASE_SCREEN::setCrossHairPosition( const wxPoint& aPosition, const wxPoint& aGridOrigin, bool aSnapToGrid )
+{
+    if( aSnapToGrid )
+        m_crossHairPosition = getNearestGridPosition( aPosition, aGridOrigin, NULL );
+    else
+        m_crossHairPosition = aPosition;
+}
+
+
+void BASE_SCREEN::ClearUndoRedoList()
+{
+    ClearUndoORRedoList( m_UndoList );
+    ClearUndoORRedoList( m_RedoList );
+}
+
+
+void BASE_SCREEN::PushCommandToUndoList( PICKED_ITEMS_LIST* aNewitem )
+{
+    m_UndoList.PushCommand( aNewitem );
+
+    // Delete the extra items, if count max reached
+    if( m_UndoRedoCountMax > 0 )
+    {
+        int extraitems = GetUndoCommandCount() - m_UndoRedoCountMax;
+        if( extraitems > 0 )
+            ClearUndoORRedoList( m_UndoList, extraitems );
+    }
+}
+
+
+void BASE_SCREEN::PushCommandToRedoList( PICKED_ITEMS_LIST* aNewitem )
+{
+    m_RedoList.PushCommand( aNewitem );
+
+    // Delete the extra items, if count max reached
+    if( m_UndoRedoCountMax > 0 )
+    {
+        int extraitems = GetRedoCommandCount() - m_UndoRedoCountMax;
+        if( extraitems > 0 )
+            ClearUndoORRedoList( m_RedoList, extraitems );
+    }
+}
+
+
+PICKED_ITEMS_LIST* BASE_SCREEN::PopCommandFromUndoList( )
+{
+    return m_UndoList.PopCommand( );
+}
+
+
+PICKED_ITEMS_LIST* BASE_SCREEN::PopCommandFromRedoList( )
+{
+    return m_RedoList.PopCommand( );
+}
+
+
+#if defined(DEBUG)
+
+void BASE_SCREEN::Show( int nestLevel, std::ostream& os ) const
+{
+    // for now, make it look like XML, expand on this later.
+    NestedSpace( nestLevel, os ) << '<' << GetClass().Lower().mb_str() << ">\n";
+
+    /* this class will eventually go away, but here's a place holder until then.
+    for( EDA_ITEM* item = m_drawList;  item;  item = item->Next() )
+    {
+        item->Show( nestLevel+1, os );
+    }
+    */
+
+    NestedSpace( nestLevel, os ) << "</" << GetClass().Lower().mb_str() << ">\n";
+}
+
+#endif