/*
 * 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 class_dimension.cpp
 */

#include <fctsys.h>
#include <macros.h>
#include <gr_basic.h>
#include <pcbcommon.h>
#include <trigo.h>
#include <wxstruct.h>
#include <class_drawpanel.h>
#include <colors_selection.h>
#include <kicad_string.h>
#include <richio.h>

#include <class_board.h>
#include <class_pcb_text.h>
#include <class_dimension.h>
#include <base_units.h>


DIMENSION::DIMENSION( BOARD_ITEM* aParent ) :
    BOARD_ITEM( aParent, PCB_DIMENSION_T ),
    m_Text( this )
{
    m_Layer = DRAW_LAYER;
    m_Width = 50;
    m_Value = 0;
    m_Shape = 0;
    m_Unit  = INCHES;
}


DIMENSION::~DIMENSION()
{
}


void DIMENSION::SetPosition( const wxPoint& aPos )
{
    m_Pos = aPos;
    m_Text.SetPos( aPos );
}


void DIMENSION::SetText( const wxString& aNewText )
{
    m_Text.SetText( aNewText );
}


const wxString DIMENSION::GetText() const
{
    return m_Text.GetText();
}


void DIMENSION::SetLayer( int aLayer )
{
    m_Layer = aLayer;
    m_Text.SetLayer( aLayer);
}


void DIMENSION::Copy( DIMENSION* source )
{
    m_Value     = source->m_Value;
    SetLayer( source->GetLayer() );
    m_Width     = source->m_Width;
    m_Pos       = source->m_Pos;
    m_Shape     = source->m_Shape;
    m_Unit      = source->m_Unit;
    SetTimeStamp( GetNewTimeStamp() );
    m_Text.Copy( &source->m_Text );

    m_crossBarOx    = source->m_crossBarOx;
    m_crossBarOy    = source->m_crossBarOy;
    m_crossBarFx    = source->m_crossBarFx;
    m_crossBarFy    = source->m_crossBarFy;
    m_featureLineGOx   = source->m_featureLineGOx;
    m_featureLineGOy   = source->m_featureLineGOy;
    m_featureLineGFx   = source->m_featureLineGFx;
    m_featureLineGFy   = source->m_featureLineGFy;
    m_featureLineDOx   = source->m_featureLineDOx;
    m_featureLineDOy   = source->m_featureLineDOy;
    m_featureLineDFx   = source->m_featureLineDFx;
    m_featureLineDFy   = source->m_featureLineDFy;
    m_arrowD1Ox = source->m_arrowD1Ox;
    m_arrowD1Oy = source->m_arrowD1Oy;
    m_arrowD1Fx = source->m_arrowD1Fx;
    m_arrowD1Fy = source->m_arrowD1Fy;
    m_arrowD2Ox = source->m_arrowD2Ox;
    m_arrowD2Oy = source->m_arrowD2Oy;
    m_arrowD2Fx = source->m_arrowD2Fx;
    m_arrowD2Fy = source->m_arrowD2Fy;
    m_arrowG1Ox = source->m_arrowG1Ox;
    m_arrowG1Oy = source->m_arrowG1Oy;
    m_arrowG1Fx = source->m_arrowG1Fx;
    m_arrowG1Fy = source->m_arrowG1Fy;
    m_arrowG2Ox = source->m_arrowG2Ox;
    m_arrowG2Oy = source->m_arrowG2Oy;
    m_arrowG2Fx = source->m_arrowG2Fx;
    m_arrowG2Fy = source->m_arrowG2Fy;
}


void DIMENSION::Move( const wxPoint& offset )
{
    m_Pos += offset;
    m_Text.m_Pos += offset;
    m_crossBarOx    += offset.x;
    m_crossBarOy    += offset.y;
    m_crossBarFx    += offset.x;
    m_crossBarFy    += offset.y;
    m_featureLineGOx   += offset.x;
    m_featureLineGOy   += offset.y;
    m_featureLineGFx   += offset.x;
    m_featureLineGFy   += offset.y;
    m_featureLineDOx   += offset.x;
    m_featureLineDOy   += offset.y;
    m_featureLineDFx   += offset.x;
    m_featureLineDFy   += offset.y;
    m_arrowG1Ox += offset.x;
    m_arrowG1Oy += offset.y;
    m_arrowG1Fx += offset.x;
    m_arrowG1Fy += offset.y;
    m_arrowG2Ox += offset.x;
    m_arrowG2Oy += offset.y;
    m_arrowG2Fx += offset.x;
    m_arrowG2Fy += offset.y;
    m_arrowD1Ox += offset.x;
    m_arrowD1Oy += offset.y;
    m_arrowD1Fx += offset.x;
    m_arrowD1Fy += offset.y;
    m_arrowD2Ox += offset.x;
    m_arrowD2Oy += offset.y;
    m_arrowD2Fx += offset.x;
    m_arrowD2Fy += offset.y;
}


void DIMENSION::Rotate( const wxPoint& aRotCentre, double aAngle )
{
    RotatePoint( &m_Pos, aRotCentre, aAngle );

    RotatePoint( &m_Text.m_Pos, aRotCentre, aAngle );

    double newAngle = m_Text.GetOrientation() + aAngle;

    if( newAngle >= 3600 )
        newAngle -= 3600;

    if( newAngle > 900  &&  newAngle < 2700 )
        newAngle -= 1800;

    m_Text.SetOrientation( newAngle );

    RotatePoint( &m_crossBarOx, &m_crossBarOy, aRotCentre.x, aRotCentre.y, aAngle );
    RotatePoint( &m_crossBarFx, &m_crossBarFy, aRotCentre.x, aRotCentre.y, aAngle );
    RotatePoint( &m_featureLineGOx, &m_featureLineGOy, aRotCentre.x, aRotCentre.y, aAngle );
    RotatePoint( &m_featureLineGFx, &m_featureLineGFy, aRotCentre.x, aRotCentre.y, aAngle );
    RotatePoint( &m_featureLineDOx, &m_featureLineDOy, aRotCentre.x, aRotCentre.y, aAngle );
    RotatePoint( &m_featureLineDFx, &m_featureLineDFy, aRotCentre.x, aRotCentre.y, aAngle );
    RotatePoint( &m_arrowG1Ox, &m_arrowG1Oy, aRotCentre.x, aRotCentre.y, aAngle );
    RotatePoint( &m_arrowG1Fx, &m_arrowG1Fy, aRotCentre.x, aRotCentre.y, aAngle );
    RotatePoint( &m_arrowG2Ox, &m_arrowG2Oy, aRotCentre.x, aRotCentre.y, aAngle );
    RotatePoint( &m_arrowG2Fx, &m_arrowG2Fy, aRotCentre.x, aRotCentre.y, aAngle );
    RotatePoint( &m_arrowD1Ox, &m_arrowD1Oy, aRotCentre.x, aRotCentre.y, aAngle );
    RotatePoint( &m_arrowD1Fx, &m_arrowD1Fy, aRotCentre.x, aRotCentre.y, aAngle );
    RotatePoint( &m_arrowD2Ox, &m_arrowD2Oy, aRotCentre.x, aRotCentre.y, aAngle );
    RotatePoint( &m_arrowD2Fx, &m_arrowD2Fy, aRotCentre.x, aRotCentre.y, aAngle );
}


void DIMENSION::Flip( const wxPoint& aCentre )
{
    Mirror( aCentre );
    SetLayer( BOARD::ReturnFlippedLayerNumber( GetLayer() ) );
}


void DIMENSION::Mirror( const wxPoint& axis_pos )
{
#define INVERT( pos )       (pos) = axis_pos.y - ( (pos) - axis_pos.y )
    INVERT( m_Pos.y );
    INVERT( m_Text.m_Pos.y );

    // invert angle
    double newAngle = m_Text.GetOrientation();
    if( newAngle >= 3600 )
        newAngle -= 3600;

    if( newAngle > 900  &&  newAngle < 2700 )
        newAngle -= 1800;

    m_Text.SetOrientation( newAngle );

    INVERT( m_crossBarOy );
    INVERT( m_crossBarFy );
    INVERT( m_featureLineGOy );
    INVERT( m_featureLineGFy );
    INVERT( m_featureLineDOy );
    INVERT( m_featureLineDFy );
    INVERT( m_arrowG1Oy );
    INVERT( m_arrowG1Fy );
    INVERT( m_arrowG2Oy );
    INVERT( m_arrowG2Fy );
    INVERT( m_arrowD1Oy );
    INVERT( m_arrowD1Fy );
    INVERT( m_arrowD2Oy );
    INVERT( m_arrowD2Fy );
}


void DIMENSION::AdjustDimensionDetails( bool aDoNotChangeText )
{
    const int   arrowz = DMils2iu( 500 );           // size of arrows
    int         ii;
    int         measure, deltax, deltay;            //  value of the measure on X and Y axes
    int         arrow_up_X = 0, arrow_up_Y = 0;     //  coordinates of arrow line /
    int         arrow_dw_X = 0, arrow_dw_Y = 0;     //  coordinates of arrow line '\'
    int         hx, hy;                             //  dimension line interval
    double      angle, angle_f;
    wxString    msg;

    // Init layer :
    m_Text.SetLayer( GetLayer() );

    // calculate the size of the dimension (text + line above the text)
    ii = m_Text.m_Size.y +
         m_Text.GetThickness() + (m_Width * 3);

    deltax = m_featureLineDOx - m_featureLineGOx;
    deltay = m_featureLineDOy - m_featureLineGOy;

    // Calculate dimension value
    measure = KiROUND( hypot( (double) deltax, (double) deltay ) );

    if( deltax || deltay )
        angle = atan2( (double) deltay, (double) deltax );
    else
        angle = 0.0;

    // Calculation of parameters X and Y dimensions of the arrows and lines.
    hx = hy = ii;

    // Taking into account the slope of the side lines.
    if( measure )
    {
        hx = (abs) ( (int) ( ( (double) deltay * hx ) / measure ) );
        hy = (abs) ( (int) ( ( (double) deltax * hy ) / measure ) );

        if( m_featureLineGOx > m_crossBarOx )
            hx = -hx;

        if( m_featureLineGOx == m_crossBarOx )
            hx = 0;

        if( m_featureLineGOy > m_crossBarOy )
            hy = -hy;

        if( m_featureLineGOy == m_crossBarOy )
            hy = 0;

        angle_f     = angle + (M_PI * 27.5 / 180);
        arrow_up_X = (int) ( arrowz * cos( angle_f ) );
        arrow_up_Y = (int) ( arrowz * sin( angle_f ) );
        angle_f     = angle - (M_PI * 27.5 / 180);
        arrow_dw_X = (int) ( arrowz * cos( angle_f ) );
        arrow_dw_Y = (int) ( arrowz * sin( angle_f ) );
    }

    m_arrowG1Ox = m_crossBarOx;
    m_arrowG1Oy = m_crossBarOy;
    m_arrowG1Fx = m_crossBarOx + arrow_up_X;
    m_arrowG1Fy = m_crossBarOy + arrow_up_Y;

    m_arrowG2Ox = m_crossBarOx;
    m_arrowG2Oy = m_crossBarOy;
    m_arrowG2Fx = m_crossBarOx + arrow_dw_X;
    m_arrowG2Fy = m_crossBarOy + arrow_dw_Y;

    /* The right arrow is symmetrical to the left.
     *  / = -\  and  \ = -/
     */
    m_arrowD1Ox = m_crossBarFx;
    m_arrowD1Oy = m_crossBarFy;
    m_arrowD1Fx = m_crossBarFx - arrow_dw_X;
    m_arrowD1Fy = m_crossBarFy - arrow_dw_Y;

    m_arrowD2Ox = m_crossBarFx;
    m_arrowD2Oy = m_crossBarFy;
    m_arrowD2Fx = m_crossBarFx - arrow_up_X;
    m_arrowD2Fy = m_crossBarFy - arrow_up_Y;


    m_featureLineGFx = m_crossBarOx + hx;
    m_featureLineGFy = m_crossBarOy + hy;

    m_featureLineDFx = m_crossBarFx + hx;
    m_featureLineDFy = m_crossBarFy + hy;

    // Calculate the better text position and orientation:
    m_Pos.x = m_Text.m_Pos.x = (m_crossBarFx + m_featureLineGFx) / 2;
    m_Pos.y = m_Text.m_Pos.y = (m_crossBarFy + m_featureLineGFy) / 2;

    double newAngle = -(angle * 1800 / M_PI);
    if( newAngle < 0 )
        newAngle += 3600;

    if( newAngle >= 3600 )
        newAngle -= 3600;

    if( newAngle > 900  &&  newAngle < 2700 )
        newAngle -= 1800;

    m_Text.SetOrientation( newAngle );

    if( !aDoNotChangeText )
    {
        m_Value = measure;
        msg = ::CoordinateToString( m_Value );
        SetText( msg );
    }
}


void DIMENSION::Draw( EDA_DRAW_PANEL* panel, wxDC* DC, GR_DRAWMODE mode_color,
                      const wxPoint& offset )
{
    int ox, oy, typeaff, width;
    EDA_COLOR_T gcolor;

    ox = -offset.x;
    oy = -offset.y;

    m_Text.Draw( panel, DC, mode_color, offset );

    BOARD * brd =  GetBoard( );

    if( brd->IsLayerVisible( m_Layer ) == false )
        return;

    gcolor = brd->GetLayerColor(m_Layer);

    GRSetDrawMode( DC, mode_color );
    typeaff = DisplayOpt.DisplayDrawItems;
    width   = m_Width;

    if( DC->LogicalToDeviceXRel( width ) < 2 )
        typeaff = LINE;

    switch( typeaff )
    {
    case LINE:
        width = 0;

    case FILLED:
        GRLine( panel->GetClipBox(), DC,
                m_crossBarOx - ox, m_crossBarOy - oy,
                m_crossBarFx - ox, m_crossBarFy - oy, width, gcolor );
        GRLine( panel->GetClipBox(), DC,
                m_featureLineGOx - ox, m_featureLineGOy - oy,
                m_featureLineGFx - ox, m_featureLineGFy - oy, width, gcolor );
        GRLine( panel->GetClipBox(), DC,
                m_featureLineDOx - ox, m_featureLineDOy - oy,
                m_featureLineDFx - ox, m_featureLineDFy - oy, width, gcolor );
        GRLine( panel->GetClipBox(), DC,
                m_arrowD1Ox - ox, m_arrowD1Oy - oy,
                m_arrowD1Fx - ox, m_arrowD1Fy - oy, width, gcolor );
        GRLine( panel->GetClipBox(), DC,
                m_arrowD2Ox - ox, m_arrowD2Oy - oy,
                m_arrowD2Fx - ox, m_arrowD2Fy - oy, width, gcolor );
        GRLine( panel->GetClipBox(), DC,
                m_arrowG1Ox - ox, m_arrowG1Oy - oy,
                m_arrowG1Fx - ox, m_arrowG1Fy - oy, width, gcolor );
        GRLine( panel->GetClipBox(), DC,
                m_arrowG2Ox - ox, m_arrowG2Oy - oy,
                m_arrowG2Fx - ox, m_arrowG2Fy - oy, width, gcolor );
        break;

    case SKETCH:
        GRCSegm( panel->GetClipBox(), DC,
                 m_crossBarOx - ox, m_crossBarOy - oy,
                 m_crossBarFx - ox, m_crossBarFy - oy,
                 width, gcolor );
        GRCSegm( panel->GetClipBox(), DC,
                 m_featureLineGOx - ox, m_featureLineGOy - oy,
                 m_featureLineGFx - ox, m_featureLineGFy - oy,
                 width, gcolor );
        GRCSegm( panel->GetClipBox(), DC,
                 m_featureLineDOx - ox, m_featureLineDOy - oy,
                 m_featureLineDFx - ox, m_featureLineDFy - oy,
                 width, gcolor );
        GRCSegm( panel->GetClipBox(), DC,
                 m_arrowD1Ox - ox, m_arrowD1Oy - oy,
                 m_arrowD1Fx - ox, m_arrowD1Fy - oy,
                 width, gcolor );
        GRCSegm( panel->GetClipBox(), DC,
                 m_arrowD2Ox - ox, m_arrowD2Oy - oy,
                 m_arrowD2Fx - ox, m_arrowD2Fy - oy,
                 width, gcolor );
        GRCSegm( panel->GetClipBox(), DC,
                 m_arrowG1Ox - ox, m_arrowG1Oy - oy,
                 m_arrowG1Fx - ox, m_arrowG1Fy - oy,
                 width, gcolor );
        GRCSegm( panel->GetClipBox(), DC,
                 m_arrowG2Ox - ox, m_arrowG2Oy - oy,
                 m_arrowG2Fx - ox, m_arrowG2Fy - oy,
                 width, gcolor );
        break;
    }
}


// see class_cotation.h
void DIMENSION::DisplayInfo( EDA_DRAW_FRAME* frame )
{
    // for now, display only the text within the DIMENSION using class TEXTE_PCB.
    m_Text.DisplayInfo( frame );
}


bool DIMENSION::HitTest( const wxPoint& aPosition )
{
    int ux0, uy0;
    int dx, dy, spot_cX, spot_cY;

    if( m_Text.TextHitTest( aPosition ) )
        return true;

    // Locate SEGMENTS?
    ux0 = m_crossBarOx;
    uy0 = m_crossBarOy;

    // Recalculate coordinates with ux0, uy0 = origin.
    dx = m_crossBarFx - ux0;
    dy = m_crossBarFy - uy0;

    spot_cX = aPosition.x - ux0;
    spot_cY = aPosition.y - uy0;

    if( DistanceTest( m_Width / 2, dx, dy, spot_cX, spot_cY ) )
        return true;

    ux0 = m_featureLineGOx;
    uy0 = m_featureLineGOy;

    dx = m_featureLineGFx - ux0;
    dy = m_featureLineGFy - uy0;

    spot_cX = aPosition.x - ux0;
    spot_cY = aPosition.y - uy0;

    if( DistanceTest( m_Width / 2, dx, dy, spot_cX, spot_cY ) )
        return true;

    ux0 = m_featureLineDOx;
    uy0 = m_featureLineDOy;

    dx = m_featureLineDFx - ux0;
    dy = m_featureLineDFy - uy0;

    spot_cX = aPosition.x - ux0;
    spot_cY = aPosition.y - uy0;

    if( DistanceTest( m_Width / 2, dx, dy, spot_cX, spot_cY ) )
        return true;

    ux0 = m_arrowD1Ox;
    uy0 = m_arrowD1Oy;

    dx = m_arrowD1Fx - ux0;
    dy = m_arrowD1Fy - uy0;

    spot_cX = aPosition.x - ux0;
    spot_cY = aPosition.y - uy0;

    if( DistanceTest( m_Width / 2, dx, dy, spot_cX, spot_cY ) )
        return true;

    ux0 = m_arrowD2Ox;
    uy0 = m_arrowD2Oy;

    dx = m_arrowD2Fx - ux0;
    dy = m_arrowD2Fy - uy0;

    spot_cX = aPosition.x - ux0;
    spot_cY = aPosition.y - uy0;

    if( DistanceTest( m_Width / 2, dx, dy, spot_cX, spot_cY ) )
        return true;

    ux0 = m_arrowG1Ox;
    uy0 = m_arrowG1Oy;

    dx = m_arrowG1Fx - ux0;
    dy = m_arrowG1Fy - uy0;

    spot_cX = aPosition.x - ux0;
    spot_cY = aPosition.y - uy0;

    if( DistanceTest( m_Width / 2, dx, dy, spot_cX, spot_cY ) )
        return true;

    ux0 = m_arrowG2Ox;
    uy0 = m_arrowG2Oy;

    dx = m_arrowG2Fx - ux0;
    dy = m_arrowG2Fy - uy0;

    spot_cX = aPosition.x - ux0;
    spot_cY = aPosition.y - uy0;

    if( DistanceTest( m_Width / 2, dx, dy, spot_cX, spot_cY ) )
        return true;

    return false;
}


bool DIMENSION::HitTest( const EDA_RECT& aRect ) const
{
    if( aRect.Contains( m_Pos ) )
        return true;

    return false;
}


EDA_RECT DIMENSION::GetBoundingBox() const
{
    EDA_RECT bBox;
    int xmin, xmax, ymin, ymax;

    bBox = m_Text.GetTextBox( -1 );
    xmin = bBox.GetX();
    xmax = bBox.GetRight();
    ymin = bBox.GetY();
    ymax = bBox.GetBottom();

    xmin = MIN( xmin, m_crossBarOx );
    xmin = MIN( xmin, m_crossBarFx );
    ymin = MIN( ymin, m_crossBarOy );
    ymin = MIN( ymin, m_crossBarFy );
    xmax = MAX( xmax, m_crossBarOx );
    xmax = MAX( xmax, m_crossBarFx );
    ymax = MAX( ymax, m_crossBarOy );
    ymax = MAX( ymax, m_crossBarFy );

    xmin = MIN( xmin, m_featureLineGOx );
    xmin = MIN( xmin, m_featureLineGFx );
    ymin = MIN( ymin, m_featureLineGOy );
    ymin = MIN( ymin, m_featureLineGFy );
    xmax = MAX( xmax, m_featureLineGOx );
    xmax = MAX( xmax, m_featureLineGFx );
    ymax = MAX( ymax, m_featureLineGOy );
    ymax = MAX( ymax, m_featureLineGFy );

    bBox.SetX( xmin );
    bBox.SetY( ymin );
    bBox.SetWidth( xmax - xmin + 1 );
    bBox.SetHeight( ymax - ymin + 1 );

    bBox.Normalize();

    return bBox;
}


wxString DIMENSION::GetSelectMenuText() const
{
    wxString text;

    text << _( "Dimension" ) << wxT( " \"" ) << GetText() << wxT( "\"" );

    return text;
}


EDA_ITEM* DIMENSION::Clone() const
{
    return new DIMENSION( *this );
}