fp_text.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2015 Jean-Pierre Charras, jp.charras at wanadoo.fr
 * Copyright (C) 2012 SoftPLC Corporation, Dick Hollenbeck <[email protected]>
 * Copyright (C) 1992-2019 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
 */

#include <pcb_edit_frame.h>
#include <base_units.h>
#include <bitmaps.h>
#include <board.h>
#include <board_design_settings.h>
#include <core/mirror.h>
#include <footprint.h>
#include <settings/settings_manager.h>
#include <trigo.h>
#include <string_utils.h>
#include <painter.h>
#include <geometry/shape_compound.h>

FP_TEXT::FP_TEXT( FOOTPRINT* aParentFootprint, TEXT_TYPE text_type ) :
 BOARD_ITEM( aParentFootprint, PCB_FP_TEXT_T ),
 EDA_TEXT()
{
 FOOTPRINT* parentFootprint = static_cast<FOOTPRINT*>( m_parent );

 m_Type = text_type;
 m_keepUpright = true;

 // Set text thickness to a default value
 SetTextThickness( Millimeter2iu( DEFAULT_TEXT_WIDTH ) );
 SetLayer( F_SilkS );

 // Set position and give a default layer if a valid parent footprint exists
 if( parentFootprint && parentFootprint->Type() == PCB_FOOTPRINT_T )
 {
 SetTextPos( parentFootprint->GetPosition() );

 if( IsBackLayer( parentFootprint->GetLayer() ) )
 {
 SetLayer( B_SilkS );
 SetMirrored( true );
 }
 }

 SetDrawCoord();
}


FP_TEXT::~FP_TEXT()
{
}


void FP_TEXT::SetTextAngle( double aAngle )
{
 EDA_TEXT::SetTextAngle( NormalizeAngle360Min( aAngle ) );
}


bool FP_TEXT::TextHitTest( const wxPoint& aPoint, int aAccuracy ) const
{
 EDA_RECT rect = GetTextBox();
 wxPoint location = aPoint;

 rect.Inflate( aAccuracy );

 RotatePoint( &location, GetTextPos(), -GetDrawRotation() );

 return rect.Contains( location );
}


bool FP_TEXT::TextHitTest( const EDA_RECT& aRect, bool aContains, int aAccuracy ) const
{
 EDA_RECT rect = aRect;

 rect.Inflate( aAccuracy );

 if( aContains )
 return rect.Contains( GetBoundingBox() );
 else
 return rect.Intersects( GetTextBox(), GetDrawRotation() );
}


void FP_TEXT::KeepUpright( double aOldOrientation, double aNewOrientation )
{
 if( !IsKeepUpright() )
 return;

 double newAngle = GetTextAngle() + aNewOrientation;
 NORMALIZE_ANGLE_POS( newAngle );
 bool needsFlipped = newAngle >= 1800.0;

 if( needsFlipped )
 {
 SetHorizJustify( static_cast<EDA_TEXT_HJUSTIFY_T>( -GetHorizJustify() ) );
 SetTextAngle( GetTextAngle() + 1800.0 );
 SetDrawCoord();
 }
}


void FP_TEXT::Rotate( const wxPoint& aRotCentre, double aAngle )
{
 // Used in footprint editing
 // Note also in footprint editor, m_Pos0 = m_Pos

 wxPoint pt = GetTextPos();
 RotatePoint( &pt, aRotCentre, aAngle );
 SetTextPos( pt );

 SetTextAngle( GetTextAngle() + aAngle );
 SetLocalCoord();
}


void FP_TEXT::Flip( const wxPoint& aCentre, bool aFlipLeftRight )
{
 // flipping the footprint is relative to the X axis
 if( aFlipLeftRight )
 {
 SetTextX( MIRRORVAL( GetTextPos().x, aCentre.x ) );
 SetTextAngle( -GetTextAngle() );
 }
 else
 {
 SetTextY( MIRRORVAL( GetTextPos().y, aCentre.y ) );
 SetTextAngle( 1800 - GetTextAngle() );
 }

 SetLayer( FlipLayer( GetLayer(), GetBoard()->GetCopperLayerCount() ) );
 SetMirrored( IsBackLayer( GetLayer() ) );
 SetLocalCoord();
}

bool FP_TEXT::IsParentFlipped() const
{
 if( GetParent() && GetParent()->GetLayer() == B_Cu )
 return true;
 return false;
}


void FP_TEXT::Mirror( const wxPoint& aCentre, bool aMirrorAroundXAxis )
{
 // the position is mirrored, but the text itself is not mirrored

 if( aMirrorAroundXAxis )
 SetTextY( ::MIRRORVAL( GetTextPos().y, aCentre.y ) );
 else
 SetTextX( ::MIRRORVAL( GetTextPos().x, aCentre.x ) );

 SetLocalCoord();
}


void FP_TEXT::Move( const wxPoint& aMoveVector )
{
 Offset( aMoveVector );
 SetLocalCoord();
}


int FP_TEXT::GetLength() const
{
 return GetText().Len();
}


void FP_TEXT::SetDrawCoord()
{
 const FOOTPRINT* parentFootprint = static_cast<const FOOTPRINT*>( m_parent );

 SetTextPos( m_Pos0 );

 if( parentFootprint )
 {
 double angle = parentFootprint->GetOrientation();

 wxPoint pt = GetTextPos();
 RotatePoint( &pt, angle );
 SetTextPos( pt );

 Offset( parentFootprint->GetPosition() );
 }
}


void FP_TEXT::SetLocalCoord()
{
 const FOOTPRINT* parentFootprint = static_cast<const FOOTPRINT*>( m_parent );

 if( parentFootprint )
 {
 m_Pos0 = GetTextPos() - parentFootprint->GetPosition();

 double angle = parentFootprint->GetOrientation();

 RotatePoint( &m_Pos0.x, &m_Pos0.y, -angle );
 }
 else
 {
 m_Pos0 = GetTextPos();
 }
}

const EDA_RECT FP_TEXT::GetBoundingBox() const
{
 double angle = GetDrawRotation();
 EDA_RECT text_area = GetTextBox();

 if( angle )
 text_area = text_area.GetBoundingBoxRotated( GetTextPos(), angle );

 return text_area;
}


double FP_TEXT::GetDrawRotation() const
{
 FOOTPRINT* parentFootprint = static_cast<FOOTPRINT*>( m_parent );
 double rotation = GetTextAngle();

 if( parentFootprint )
 rotation += parentFootprint->GetOrientation();

 if( m_keepUpright )
 {
 // Keep angle between 0 .. 90 deg. Otherwise the text is not easy to read
 while( rotation > 900 )
 rotation -= 1800;

 while( rotation < 0 )
 rotation += 1800;
 }
 else
 {
 NORMALIZE_ANGLE_POS( rotation );
 }

 return rotation;
}


void FP_TEXT::GetMsgPanelInfo( EDA_DRAW_FRAME* aFrame, std::vector<MSG_PANEL_ITEM>& aList )
{
 wxString msg;

 static const wxString text_type_msg[3] =
 {
 _( "Reference" ), _( "Value" ), _( "Text" )
 };

 if( aFrame->GetName() == PCB_EDIT_FRAME_NAME )
 {
 FOOTPRINT* fp = static_cast<FOOTPRINT*>( m_parent );

 if( fp )
 aList.emplace_back( _( "Footprint" ), fp->GetReference() );
 }

 // Don't use GetShownText() here; we want to show the user the variable references
 aList.emplace_back( _( "Text" ), UnescapeString( GetText() ) );

 wxASSERT( m_Type >= TEXT_is_REFERENCE && m_Type <= TEXT_is_DIVERS );
 aList.emplace_back( _( "Type" ), text_type_msg[m_Type] );

 if( aFrame->GetName() == PCB_EDIT_FRAME_NAME && IsLocked() )
 aList.emplace_back( _( "Status" ), _( "Locked" ) );

 aList.emplace_back( _( "Display" ), IsVisible() ? _( "Yes" ) : _( "No" ) );

 // Display text layer
 aList.emplace_back( _( "Layer" ), GetLayerName() );

 aList.emplace_back( _( "Mirror" ), IsMirrored() ? _( "Yes" ) : _( "No" ) );

 msg.Printf( wxT( "%g" ), GetTextAngleDegrees() );
 aList.emplace_back( _( "Angle" ), msg );

 msg = MessageTextFromValue( aFrame->GetUserUnits(), GetTextThickness() );
 aList.emplace_back( _( "Thickness" ), msg );

 msg = MessageTextFromValue( aFrame->GetUserUnits(), GetTextWidth() );
 aList.emplace_back( _( "Width" ), msg );

 msg = MessageTextFromValue( aFrame->GetUserUnits(), GetTextHeight() );
 aList.emplace_back( _( "Height" ), msg );
}


wxString FP_TEXT::GetSelectMenuText( EDA_UNITS aUnits ) const
{
 switch( m_Type )
 {
 case TEXT_is_REFERENCE:
 return wxString::Format( _( "Reference '%s'" ),
 static_cast<FOOTPRINT*>( GetParent() )->GetReference() );

 case TEXT_is_VALUE:
 return wxString::Format( _( "Value '%s' of %s" ),
 GetShownText(),
 static_cast<FOOTPRINT*>( GetParent() )->GetReference() );

 default:
 return wxString::Format( _( "Footprint Text '%s' of %s" ),
 ShortenedShownText(),
 static_cast<FOOTPRINT*>( GetParent() )->GetReference() );
 }
}


BITMAPS FP_TEXT::GetMenuImage() const
{
 return BITMAPS::text;
}


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


const BOX2I FP_TEXT::ViewBBox() const
{
 double angle = GetDrawRotation();
 EDA_RECT text_area = GetTextBox();

 if( angle != 0.0 )
 text_area = text_area.GetBoundingBoxRotated( GetTextPos(), angle );

 return BOX2I( text_area.GetPosition(), text_area.GetSize() );
}


void FP_TEXT::ViewGetLayers( int aLayers[], int& aCount ) const
{
 if( IsVisible() )
 aLayers[0] = GetLayer();
 else
 aLayers[0] = LAYER_MOD_TEXT_INVISIBLE;

 aCount = 1;
}


double FP_TEXT::ViewGetLOD( int aLayer, KIGFX::VIEW* aView ) const
{
 constexpr double HIDE = (double)std::numeric_limits<double>::max();

 if( !aView )
 return 0.0;

 // Hidden text gets put on the LAYER_MOD_TEXT_INVISIBLE for rendering, but
 // should only render if its native layer is visible.
 if( !aView->IsLayerVisible( GetLayer() ) )
 return HIDE;

 RENDER_SETTINGS* renderSettings = aView->GetPainter()->GetSettings();
 COLOR4D backgroundColor = renderSettings->GetLayerColor( LAYER_PCB_BACKGROUND );

 // Handle Render tab switches
 if( m_Type == TEXT_is_VALUE || GetText() == wxT( "${VALUE}" ) )
 {
 if( !aView->IsLayerVisible( LAYER_MOD_VALUES )
 || renderSettings->GetLayerColor( LAYER_MOD_VALUES ) == backgroundColor )
 {
 return HIDE;
 }
 }

 if( m_Type == TEXT_is_REFERENCE || GetText() == wxT( "${REFERENCE}" ) )
 {
 if( !aView->IsLayerVisible( LAYER_MOD_REFERENCES )
 || renderSettings->GetLayerColor( LAYER_MOD_REFERENCES ) == backgroundColor )
 {
 return HIDE;
 }
 }

 if( !IsParentFlipped() && !aView->IsLayerVisible( LAYER_MOD_FR ) )
 return HIDE;

 if( IsParentFlipped() && !aView->IsLayerVisible( LAYER_MOD_BK ) )
 return HIDE;

 if( !aView->IsLayerVisible( LAYER_MOD_TEXT ) )
 return HIDE;

 // Other layers are shown without any conditions
 return 0.0;
}


wxString FP_TEXT::GetShownText( int aDepth ) const
{
 const FOOTPRINT* parentFootprint = static_cast<FOOTPRINT*>( GetParent() );
 wxASSERT( parentFootprint );
 const BOARD* board = parentFootprint->GetBoard();

 std::function<bool( wxString* )> footprintResolver =
 [&]( wxString* token ) -> bool
 {
 return parentFootprint && parentFootprint->ResolveTextVar( token, aDepth );
 };

 std::function<bool( wxString* )> boardTextResolver =
 [&]( wxString* token ) -> bool
 {
 return board->ResolveTextVar( token, aDepth + 1 );
 };

 wxString text = EDA_TEXT::GetShownText();

 if( HasTextVars() )
 {
 PROJECT* project = nullptr;

 if( parentFootprint && parentFootprint->GetParent() )
 project = static_cast<BOARD*>( parentFootprint->GetParent() )->GetProject();

 if( aDepth < 10 )
 text = ExpandTextVars( text, &footprintResolver, &boardTextResolver, project );
 }

 return text;
}


std::shared_ptr<SHAPE> FP_TEXT::GetEffectiveShape( PCB_LAYER_ID aLayer ) const
{
 return GetEffectiveTextShape();
}


void FP_TEXT::TransformTextShapeWithClearanceToPolygon( SHAPE_POLY_SET& aCornerBuffer,
 PCB_LAYER_ID aLayer, int aClearance,
 int aError, ERROR_LOC aErrorLoc ) const
{
 struct TSEGM_2_POLY_PRMS prms;

 prms.m_cornerBuffer = &aCornerBuffer;
 prms.m_textWidth = GetEffectiveTextPenWidth() + ( 2 * aClearance );
 prms.m_error = aError;
 wxSize size = GetTextSize();
 int penWidth = GetEffectiveTextPenWidth();

 if( IsMirrored() )
 size.x = -size.x;

 GRText( nullptr, GetTextPos(), BLACK, GetShownText(), GetDrawRotation(), size,
 GetHorizJustify(), GetVertJustify(), penWidth, IsItalic(), IsBold(),
 addTextSegmToPoly, &prms );
}


void FP_TEXT::TransformShapeWithClearanceToPolygon( SHAPE_POLY_SET& aCornerBuffer,
  PCB_LAYER_ID aLayer, int aClearance,
 int aError, ERROR_LOC aErrorLoc,
 bool aIgnoreLineWidth ) const
{
 SHAPE_POLY_SET buffer;
 EDA_TEXT::TransformBoundingBoxWithClearanceToPolygon( &buffer, aClearance );

 const FOOTPRINT* parentFootprint = static_cast<const FOOTPRINT*>( m_parent );

 if( parentFootprint )
 buffer.Rotate( DECIDEG2RAD( GetDrawRotation() ), GetTextPos() );

 aCornerBuffer.Append( buffer );
}


static struct FP_TEXT_DESC
{
 FP_TEXT_DESC()
 {
 PROPERTY_MANAGER& propMgr = PROPERTY_MANAGER::Instance();
 REGISTER_TYPE( FP_TEXT );
 propMgr.AddTypeCast( new TYPE_CAST<FP_TEXT, BOARD_ITEM> );
 propMgr.AddTypeCast( new TYPE_CAST<FP_TEXT, EDA_TEXT> );
 propMgr.InheritsAfter( TYPE_HASH( FP_TEXT ), TYPE_HASH( BOARD_ITEM ) );
 propMgr.InheritsAfter( TYPE_HASH( FP_TEXT ), TYPE_HASH( EDA_TEXT ) );

 propMgr.AddProperty( new PROPERTY<FP_TEXT, wxString>( _HKI( "Parent" ),
 NO_SETTER( FP_TEXT, wxString ), &FP_TEXT::GetParentAsString ) );
 }
} _FP_TEXT_DESC;