/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2012 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
 * Copyright (C) 2015-2019 KiCad Developers, see change_log.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
 */

#include <base_units.h>
#include <kiway.h>
#include <sch_draw_panel.h>
#include <sch_view.h>
#include <sch_painter.h>
#include <gal/graphics_abstraction_layer.h>
#include <confirm.h>
#include <preview_items/selection_area.h>
#include <class_library.h>
#include <eeschema_id.h>
#include <lib_edit_frame.h>
#include <viewlib_frame.h>
#include <sch_base_frame.h>
#include <symbol_lib_table.h>
#include <tool/tool_manager.h>
#include <tool/tool_dispatcher.h>
#include <tools/ee_actions.h>


LIB_ALIAS* SchGetLibAlias( const LIB_ID& aLibId, SYMBOL_LIB_TABLE* aLibTable, PART_LIB* aCacheLib,
                           wxWindow* aParent, bool aShowErrorMsg )
{
    // wxCHECK_MSG( aLibId.IsValid(), NULL, "LIB_ID is not valid." );
    wxCHECK_MSG( aLibTable, NULL, "Invalid symbol library table." );

    LIB_ALIAS* alias = NULL;

    try
    {
        alias = aLibTable->LoadSymbol( aLibId );

        if( !alias && aCacheLib )
            alias = aCacheLib->FindAlias( aLibId );
    }
    catch( const IO_ERROR& ioe )
    {
        if( aShowErrorMsg )
        {
            wxString msg = wxString::Format( _( "Error loading symbol '%s' from library '%s'." ),
                                             aLibId.GetLibItemName().wx_str(),
                                             aLibId.GetLibNickname().wx_str() );
            DisplayErrorMessage( aParent, msg, ioe.What() );
        }
    }

    return alias;
}


LIB_PART* SchGetLibPart( const LIB_ID& aLibId, SYMBOL_LIB_TABLE* aLibTable, PART_LIB* aCacheLib,
                         wxWindow* aParent, bool aShowErrorMsg )
{
    LIB_ALIAS* alias = SchGetLibAlias( aLibId, aLibTable, aCacheLib, aParent, aShowErrorMsg );

    return ( alias ) ? alias->GetPart() : NULL;
}


// Static members:

SCH_BASE_FRAME::SCH_BASE_FRAME( KIWAY* aKiway, wxWindow* aParent, FRAME_T aWindowType,
                                const wxString& aTitle, const wxPoint& aPosition,
                                const wxSize& aSize, long aStyle, const wxString& aFrameName ) :
    EDA_DRAW_FRAME( aKiway, aParent, aWindowType, aTitle, aPosition, aSize, aStyle, aFrameName )
{
    createCanvas();

    m_zoomLevelCoeff = 11.0;    // Adjusted to roughly displays zoom level = 1
                                // when the screen shows a 1:1 image
                                // obviously depends on the monitor,
                                // but this is an acceptable value
    m_repeatStep = wxPoint( DEFAULT_REPEAT_OFFSET_X, DEFAULT_REPEAT_OFFSET_Y );
    m_repeatDeltaLabel = DEFAULT_REPEAT_LABEL_INC;
    m_showPinElectricalTypeName = false;
}


SCH_BASE_FRAME::~SCH_BASE_FRAME()
{
}


SCH_SCREEN* SCH_BASE_FRAME::GetScreen() const
{
    return (SCH_SCREEN*) EDA_DRAW_FRAME::GetScreen();
}


void SCH_BASE_FRAME::SetScreen(  BASE_SCREEN* aScreen )
{
    EDA_DRAW_FRAME::SetScreen( aScreen );

    if( m_toolManager )
    {
        m_toolManager->SetEnvironment( aScreen, GetCanvas()->GetView(),
                                       GetCanvas()->GetViewControls(), this );
    }
}


const wxString SCH_BASE_FRAME::GetZoomLevelIndicator() const
{
    return EDA_DRAW_FRAME::GetZoomLevelIndicator();
}


void SCH_BASE_FRAME::SetPageSettings( const PAGE_INFO& aPageSettings )
{
    GetScreen()->SetPageSettings( aPageSettings );
}


const PAGE_INFO& SCH_BASE_FRAME::GetPageSettings () const
{
    return GetScreen()->GetPageSettings();
}


const wxSize SCH_BASE_FRAME::GetPageSizeIU() const
{
    // GetSizeIU is compile time dependent:
    return GetScreen()->GetPageSettings().GetSizeIU();
}


const wxPoint& SCH_BASE_FRAME::GetAuxOrigin() const
{
    wxASSERT( GetScreen() );
    return GetScreen()->GetAuxOrigin();
}


void SCH_BASE_FRAME::SetAuxOrigin( const wxPoint& aPosition )
{
    wxASSERT( GetScreen() );
    GetScreen()->SetAuxOrigin( aPosition );
}


const TITLE_BLOCK& SCH_BASE_FRAME::GetTitleBlock() const
{
    wxASSERT( GetScreen() );
    return GetScreen()->GetTitleBlock();
}


void SCH_BASE_FRAME::SetTitleBlock( const TITLE_BLOCK& aTitleBlock )
{
    wxASSERT( GetScreen() );
    GetScreen()->SetTitleBlock( aTitleBlock );
}


void SCH_BASE_FRAME::UpdateStatusBar()
{
    wxString        line;
    BASE_SCREEN*    screen = GetScreen();

    if( !screen )
        return;

    EDA_DRAW_FRAME::UpdateStatusBar();

    // Display absolute coordinates:
    VECTOR2D cursorPos = GetGalCanvas()->GetViewControls()->GetCursorPosition();
    double   dXpos = To_User_Unit( GetUserUnits(), cursorPos.x );
    double   dYpos = To_User_Unit( GetUserUnits(), cursorPos.y );

    if ( GetUserUnits() == MILLIMETRES )
    {
        dXpos = RoundTo0( dXpos, 100.0 );
        dYpos = RoundTo0( dYpos, 100.0 );
    }

    wxString absformatter;
    wxString locformatter;

    switch( GetUserUnits() )
    {
    case INCHES:
        absformatter = "X %.3f  Y %.3f";
        locformatter = "dx %.3f  dy %.3f  dist %.3f";
        break;

    case MILLIMETRES:
        absformatter = "X %.2f  Y %.2f";
        locformatter = "dx %.2f  dy %.2f  dist %.2f";
        break;

    case UNSCALED_UNITS:
        absformatter = "X %f  Y %f";
        locformatter = "dx %f  dy %f  dist %f";
        break;

    case DEGREES:
        wxASSERT( false );
        break;
    }

    line.Printf( absformatter, dXpos, dYpos );
    SetStatusText( line, 2 );

    // Display relative coordinates:
    double dx = cursorPos.x - screen->m_LocalOrigin.x;
    double dy = cursorPos.y - screen->m_LocalOrigin.y;

    dXpos = To_User_Unit( GetUserUnits(), dx );
    dYpos = To_User_Unit( GetUserUnits(), dy );

    if( GetUserUnits() == MILLIMETRES )
    {
        dXpos = RoundTo0( dXpos, 100.0 );
        dYpos = RoundTo0( dYpos, 100.0 );
    }

    // We already decided the formatter above
    line.Printf( locformatter, dXpos, dYpos, hypot( dXpos, dYpos ) );
    SetStatusText( line, 3 );

    // refresh grid display
    DisplayGridMsg();

    // refresh units display
    DisplayUnitsMsg();
}


LIB_ALIAS* SCH_BASE_FRAME::GetLibAlias( const LIB_ID& aLibId, bool aUseCacheLib, bool aShowError )
{
    PART_LIB* cache = ( aUseCacheLib ) ? Prj().SchLibs()->GetCacheLibrary() : NULL;

    return SchGetLibAlias( aLibId, Prj().SchSymbolLibTable(), cache, this, aShowError );
}


LIB_PART* SCH_BASE_FRAME::GetLibPart( const LIB_ID& aLibId, bool aUseCacheLib, bool aShowErrorMsg )
{
    PART_LIB* cache = ( aUseCacheLib ) ? Prj().SchLibs()->GetCacheLibrary() : NULL;

    return SchGetLibPart( aLibId, Prj().SchSymbolLibTable(), cache, this, aShowErrorMsg );
}


bool SCH_BASE_FRAME::saveSymbolLibTables( bool aGlobal, bool aProject )
{
    wxString msg;
    bool success = true;

    if( aGlobal )
    {
        try
        {
            SYMBOL_LIB_TABLE::GetGlobalLibTable().Save( SYMBOL_LIB_TABLE::GetGlobalTableFileName() );
        }
        catch( const IO_ERROR& ioe )
        {
            success = false;
            msg.Printf( _( "Error saving global symbol library table:\n%s" ), ioe.What() );
            wxMessageBox( msg, _( "File Save Error" ), wxOK | wxICON_ERROR );
        }
    }

    if( aProject && !Prj().GetProjectName().IsEmpty() )
    {
        wxFileName fn( Prj().GetProjectPath(), SYMBOL_LIB_TABLE::GetSymbolLibTableFileName() );

        try
        {
            Prj().SchSymbolLibTable()->Save( fn.GetFullPath() );
        }
        catch( const IO_ERROR& ioe )
        {
            success = false;
            msg.Printf( _( "Error saving project-specific symbol library table:\n%s" ), ioe.What() );
            wxMessageBox( msg, _( "File Save Error" ), wxOK | wxICON_ERROR );
        }
    }

    return success;
}


void SCH_BASE_FRAME::RedrawScreen( const wxPoint& aCenterPoint, bool aWarpPointer )
{
    KIGFX::GAL* gal = GetCanvas()->GetGAL();

    double selectedZoom = GetScreen()->GetZoom();
    double zoomFactor = gal->GetWorldScale() / gal->GetZoomFactor();
    double scale = 1.0 / ( zoomFactor * selectedZoom );

    if( aCenterPoint != wxPoint( 0, 0 ) )
        GetCanvas()->GetView()->SetScale( scale, aCenterPoint );
    else
        GetCanvas()->GetView()->SetScale( scale );

    GetCanvas()->GetView()->SetCenter( aCenterPoint );

    if( aWarpPointer )
        GetCanvas()->GetViewControls()->CenterOnCursor();

    GetCanvas()->Refresh();
}


void SCH_BASE_FRAME::CenterScreen( const wxPoint& aCenterPoint, bool aWarpPointer )
{
    GetCanvas()->GetView()->SetCenter( aCenterPoint );

    if( aWarpPointer )
        GetCanvas()->GetViewControls()->WarpCursor( aCenterPoint, true );

    GetGalCanvas()->Refresh();
}


void SCH_BASE_FRAME::HardRedraw()
{
    GetGalCanvas()->GetView()->UpdateAllItems( KIGFX::ALL );
    GetGalCanvas()->ForceRefresh();
}


SCH_DRAW_PANEL* SCH_BASE_FRAME::GetCanvas() const
{
    return static_cast<SCH_DRAW_PANEL*>( GetGalCanvas() );
}


KIGFX::SCH_RENDER_SETTINGS* SCH_BASE_FRAME::GetRenderSettings()
{
    KIGFX::PAINTER* painter = GetGalCanvas()->GetView()->GetPainter();
    return static_cast<KIGFX::SCH_RENDER_SETTINGS*>( painter->GetSettings() );
}


void SCH_BASE_FRAME::createCanvas()
{
    m_canvasType = LoadCanvasTypeSetting();

    // Allows only a CAIRO or OPENGL canvas:
    if( m_canvasType != EDA_DRAW_PANEL_GAL::GAL_TYPE_OPENGL
            && m_canvasType != EDA_DRAW_PANEL_GAL::GAL_TYPE_CAIRO )
    {
        m_canvasType = EDA_DRAW_PANEL_GAL::GAL_TYPE_OPENGL;
    }

    SetGalCanvas( new SCH_DRAW_PANEL( this, wxID_ANY, wxPoint( 0, 0 ), m_FrameSize,
                                      GetGalDisplayOptions(), m_canvasType ) );
    ActivateGalCanvas();
}


void SCH_BASE_FRAME::RefreshItem( EDA_ITEM* aItem, bool isAddOrDelete )
{
    EDA_ITEM* parent = aItem->GetParent();

    if( aItem->Type() == SCH_SHEET_PIN_T )
    {
        // Sheet pins aren't in the view.  Refresh their parent.
        if( parent )
            GetCanvas()->GetView()->Update( parent );
    }
    else
    {
        if( !isAddOrDelete )
            GetCanvas()->GetView()->Update( aItem );

        // Component children are drawn from their parents.  Mark them for re-paint.
        if( parent && parent->Type() == SCH_COMPONENT_T )
            GetCanvas()->GetView()->Update( parent, KIGFX::REPAINT );
    }

    GetCanvas()->Refresh();
}


void SCH_BASE_FRAME::AddToScreen( EDA_ITEM* aItem, SCH_SCREEN* aScreen )
{
    auto screen = aScreen;

    if( aScreen == nullptr )
        screen = GetScreen();

    screen->Append( (SCH_ITEM*) aItem );

    if( screen == GetScreen() )
    {
        GetCanvas()->GetView()->Add( aItem );
        RefreshItem( aItem, true );           // handle any additional parent semantics
    }
}


void SCH_BASE_FRAME::RemoveFromScreen( EDA_ITEM* aItem, SCH_SCREEN* aScreen )
{
    auto screen = aScreen;

    if( aScreen == nullptr )
        screen = GetScreen();

    if( screen == GetScreen() )
        GetCanvas()->GetView()->Remove( aItem );

    screen->Remove( (SCH_ITEM*) aItem );

    if( screen == GetScreen() )
        RefreshItem( aItem, true );           // handle any additional parent semantics
}


void SCH_BASE_FRAME::SyncView()
{
    auto screen = GetScreen();
    auto gal = GetGalCanvas()->GetGAL();

    auto gs = screen->GetGridSize();
    gal->SetGridSize( VECTOR2D( gs.x, gs.y ));
    GetGalCanvas()->GetView()->UpdateAllItems( KIGFX::ALL );
}