pcb_textbox.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2022 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 <footprint.h>
#include <pcb_textbox.h>
#include <pcb_painter.h>
#include <trigo.h>
#include <string_utils.h>
#include <geometry/shape_compound.h>
#include <callback_gal.h>
#include <convert_basic_shapes_to_polygon.h>
#include <macros.h>
#include <ignore.h>
 
 
PCB_TEXTBOX::PCB_TEXTBOX( BOARD_ITEM* parent ) :
 PCB_SHAPE( parent, PCB_TEXTBOX_T, SHAPE_T::RECT ),
 EDA_TEXT( pcbIUScale )
{
 SetHorizJustify( GR_TEXT_H_ALIGN_LEFT );
 SetVertJustify( GR_TEXT_V_ALIGN_TOP );
 SetMultilineAllowed( true );
}
 
 
PCB_TEXTBOX::~PCB_TEXTBOX()
{
}
 
 
int PCB_TEXTBOX::GetTextMargin() const
{
 return KiROUND( GetTextSize().y * 0.8 );
}
 
 
VECTOR2I PCB_TEXTBOX::GetTopLeft() const
{
 EDA_ANGLE rotation = GetDrawRotation();
 
 if( rotation == ANGLE_90 )
 return VECTOR2I( GetStartX(), GetEndY() );
 else if( rotation == ANGLE_180 )
 return GetEnd();
 else if( rotation == ANGLE_270 )
 return VECTOR2I( GetEndX(), GetStartY() );
 else
 return GetStart();
}
 
 
VECTOR2I PCB_TEXTBOX::GetBotRight() const
{
 EDA_ANGLE rotation = GetDrawRotation();
 
 if( rotation == ANGLE_90 )
 return VECTOR2I( GetEndX(), GetStartY() );
 else if( rotation == ANGLE_180 )
 return GetStart();
 else if( rotation == ANGLE_270 )
 return VECTOR2I( GetStartX(), GetEndY() );
 else
 return GetEnd();
}
 
 
void PCB_TEXTBOX::SetTop( int aVal )
{
 EDA_ANGLE rotation = GetDrawRotation();
 
 if( rotation == ANGLE_90 || rotation == ANGLE_180 )
 SetEndY( aVal );
 else
 SetStartY( aVal );
}
 
 
void PCB_TEXTBOX::SetBottom( int aVal )
{
 EDA_ANGLE rotation = GetDrawRotation();
 
 if( rotation == ANGLE_90 || rotation == ANGLE_180 )
 SetStartY( aVal );
 else
 SetEndY( aVal );
}
 
 
void PCB_TEXTBOX::SetLeft( int aVal )
{
 EDA_ANGLE rotation = GetDrawRotation();
 
 if( rotation == ANGLE_180 || rotation == ANGLE_270 )
 SetEndX( aVal );
 else
 SetStartX( aVal );
}
 
 
void PCB_TEXTBOX::SetRight( int aVal )
{
 EDA_ANGLE rotation = GetDrawRotation();
 
 if( rotation == ANGLE_180 || rotation == ANGLE_270 )
 SetStartX( aVal );
 else
 SetEndX( aVal );
}
 
 
std::vector<VECTOR2I> PCB_TEXTBOX::GetAnchorAndOppositeCorner() const
{
 std::vector<VECTOR2I> pts;
 std::vector<VECTOR2I> corners = GetCorners();
 EDA_ANGLE textAngle( GetDrawRotation() );
 
 textAngle.Normalize();
 
 pts.emplace_back( corners[0] );
 
 if( textAngle < ANGLE_90 )
 {
 if( corners[1].y <= corners[0].y )
 pts.emplace_back( corners[1] );
 else
 pts.emplace_back( corners[3] );
 }
 else if( textAngle < ANGLE_180 )
 {
 if( corners[1].x <= corners[0].x )
 pts.emplace_back( corners[1] );
 else
 pts.emplace_back( corners[3] );
 }
 else if( textAngle < ANGLE_270 )
 {
 if( corners[1].y >= corners[0].y )
 pts.emplace_back( corners[1] );
 else
 pts.emplace_back( corners[3] );
 }
 else
 {
 if( corners[1].x >= corners[0].x )
 pts.emplace_back( corners[1] );
 else
 pts.emplace_back( corners[3] );
 }
 
 return pts;
}
 
 
VECTOR2I PCB_TEXTBOX::GetDrawPos() const
{
 std::vector<VECTOR2I> corners = GetAnchorAndOppositeCorner();
 GR_TEXT_H_ALIGN_T effectiveAlignment = GetHorizJustify();
 VECTOR2I textAnchor;
 VECTOR2I offset;
 
 if( IsMirrored() )
 {
 switch( GetHorizJustify() )
 {
 case GR_TEXT_H_ALIGN_LEFT: effectiveAlignment = GR_TEXT_H_ALIGN_RIGHT; break;
 case GR_TEXT_H_ALIGN_CENTER: effectiveAlignment = GR_TEXT_H_ALIGN_CENTER; break;
 case GR_TEXT_H_ALIGN_RIGHT: effectiveAlignment = GR_TEXT_H_ALIGN_LEFT; break;
 }
 }
 
 switch( effectiveAlignment )
 {
 case GR_TEXT_H_ALIGN_LEFT:
 textAnchor = corners[0];
 offset = VECTOR2I( GetTextMargin(), GetTextMargin() );
 break;
 case GR_TEXT_H_ALIGN_CENTER:
 textAnchor = ( corners[0] + corners[1] ) / 2;
 offset = VECTOR2I( 0, GetTextMargin() );
 break;
 case GR_TEXT_H_ALIGN_RIGHT:
 textAnchor = corners[1];
 offset = VECTOR2I( -GetTextMargin(), GetTextMargin() );
 break;
 }
 
 RotatePoint( offset, GetDrawRotation() );
 return textAnchor + offset;
}
 
 
double PCB_TEXTBOX::ViewGetLOD( int aLayer, KIGFX::VIEW* aView ) const
{
 constexpr double HIDE = std::numeric_limits<double>::max();
 
 KIGFX::PCB_PAINTER* painter = static_cast<KIGFX::PCB_PAINTER*>( aView->GetPainter() );
 KIGFX::PCB_RENDER_SETTINGS* renderSettings = painter->GetSettings();
 
 if( aLayer == LAYER_LOCKED_ITEM_SHADOW )
 {
 // Hide shadow if the main layer is not shown
 if( !aView->IsLayerVisible( m_layer ) )
 return HIDE;
 
 // Hide shadow on dimmed tracks
 if( renderSettings->GetHighContrast() )
 {
 if( m_layer != renderSettings->GetPrimaryHighContrastLayer() )
 return HIDE;
 }
 }
 
 return 0.0;
}
 
 
wxString PCB_TEXTBOX::GetShownText( int aDepth, bool aAllowExtraText ) const
{
 BOARD* board = dynamic_cast<BOARD*>( GetParent() );
 
 std::function<bool( wxString* )> pcbTextResolver =
 [&]( wxString* token ) -> bool
 {
 if( token->IsSameAs( wxT( "LAYER" ) ) )
 {
 *token = GetLayerName();
 return true;
 }
 
 if( token->Contains( ':' ) )
 {
 wxString remainder;
 wxString ref = token->BeforeFirst( ':', &remainder );
 BOARD_ITEM* refItem = board->GetItem( KIID( ref ) );
 
 if( refItem && refItem->Type() == PCB_FOOTPRINT_T )
 {
 FOOTPRINT* refFP = static_cast<FOOTPRINT*>( refItem );
 
 if( refFP->ResolveTextVar( &remainder, aDepth + 1 ) )
 {
 *token = remainder;
 return true;
 }
 }
 }
 return false;
 };
 
 std::function<bool( wxString* )> boardTextResolver =
 [&]( wxString* token ) -> bool
 {
 return board->ResolveTextVar( token, aDepth + 1 );
 };
 
 wxString text = EDA_TEXT::GetShownText();
 
 if( board && HasTextVars() && aDepth < 10 )
 text = ExpandTextVars( text, &pcbTextResolver, &boardTextResolver, board->GetProject() );
 
 KIFONT::FONT* font = getDrawFont();
 std::vector<VECTOR2I> corners = GetAnchorAndOppositeCorner();
 int colWidth = ( corners[1] - corners[0] ).EuclideanNorm();
 
 colWidth -= GetTextMargin() * 2;
 font->LinebreakText( text, colWidth, GetTextSize(), GetTextThickness(), IsBold(), IsItalic() );
 
 return text;
}
 
 
void PCB_TEXTBOX::GetMsgPanelInfo( EDA_DRAW_FRAME* aFrame, std::vector<MSG_PANEL_ITEM>& aList )
{
 // Don't use GetShownText() here; we want to show the user the variable references
 aList.emplace_back( _( "Text Box" ), KIUI::EllipsizeStatusText( aFrame, GetText() ) );
 
 if( aFrame->GetName() == PCB_EDIT_FRAME_NAME && IsLocked() )
 aList.emplace_back( _( "Status" ), _( "Locked" ) );
 
 aList.emplace_back( _( "Layer" ), GetLayerName() );
 aList.emplace_back( _( "Mirror" ), IsMirrored() ? _( "Yes" ) : _( "No" ) );
 aList.emplace_back( _( "Angle" ), wxString::Format( "%g", GetTextAngle().AsDegrees() ) );
 
 aList.emplace_back( _( "Font" ), GetFont() ? GetFont()->GetName() : _( "Default" ) );
 aList.emplace_back( _( "Text Thickness" ), aFrame->MessageTextFromValue( GetTextThickness() ) );
 aList.emplace_back( _( "Text Width" ), aFrame->MessageTextFromValue( GetTextWidth() ) );
 aList.emplace_back( _( "Text Height" ), aFrame->MessageTextFromValue( GetTextHeight() ) );
 
 aList.emplace_back( _( "Box Width" ),
 aFrame->MessageTextFromValue( std::abs( GetEnd().x - GetStart().x ) ) );
 
 aList.emplace_back( _( "Box Height" ),
 aFrame->MessageTextFromValue( std::abs( GetEnd().y - GetStart().y ) ));
 
 m_stroke.GetMsgPanelInfo( aFrame, aList );
}
 
 
void PCB_TEXTBOX::Move( const VECTOR2I& aMoveVector )
{
 PCB_SHAPE::Move( aMoveVector );
 EDA_TEXT::Offset( aMoveVector );
}
 
 
void PCB_TEXTBOX::Rotate( const VECTOR2I& aRotCentre, const EDA_ANGLE& aAngle )
{
 PCB_SHAPE::Rotate( aRotCentre, aAngle );
 SetTextAngle( GetTextAngle() + aAngle );
 
 if( GetTextAngle().IsCardinal() && GetShape() != SHAPE_T::RECT )
 {
 std::vector<VECTOR2I> corners = GetCorners();
 VECTOR2I diag = corners[2] - corners[0];
 EDA_ANGLE angle = GetTextAngle();
 
 SetShape( SHAPE_T::RECT );
 SetStart( corners[0] );
 
 angle.Normalize();
 
 if( angle == ANGLE_90 )
 SetEnd( VECTOR2I( corners[0].x + abs( diag.x ), corners[0].y - abs( diag.y ) ) );
 else if( angle == ANGLE_180 )
 SetEnd( VECTOR2I( corners[0].x - abs( diag.x ), corners[0].y - abs( diag.y ) ) );
 else if( angle == ANGLE_270 )
 SetEnd( VECTOR2I( corners[0].x - abs( diag.x ), corners[0].y + abs( diag.y ) ) );
 else
 SetEnd( VECTOR2I( corners[0].x + abs( diag.x ), corners[0].y + abs( diag.y ) ) );
 }
}
 
 
void PCB_TEXTBOX::Mirror( const VECTOR2I& aCentre, bool aMirrorAroundXAxis )
{
 // the position is mirrored, but not the text (or its justification)
 PCB_SHAPE::Mirror( aCentre, aMirrorAroundXAxis );
 
 BOX2I rect( m_start, m_end - m_start );
 rect.Normalize();
 m_start = VECTOR2I( rect.GetLeft(), rect.GetTop() );
 m_end = VECTOR2I( rect.GetRight(), rect.GetBottom() );
}
 
 
void PCB_TEXTBOX::Flip( const VECTOR2I& aCentre, bool aFlipLeftRight )
{
 if( aFlipLeftRight )
 {
 m_start.x = aCentre.x - ( m_start.x - aCentre.x );
 m_end.x = aCentre.x - ( m_end.x - aCentre.x );
 SetTextAngle( -GetTextAngle() );
 }
 else
 {
 m_start.y = aCentre.y - ( m_start.y - aCentre.y );
 m_end.y = aCentre.y - ( m_end.y - aCentre.y );
 SetTextAngle( ANGLE_180 - GetTextAngle() );
 }
 
 SetLayer( FlipLayer( GetLayer(), GetBoard()->GetCopperLayerCount() ) );
 
 if( ( GetLayerSet() & LSET::SideSpecificMask() ).any() )
 SetMirrored( !IsMirrored() );
}
 
 
bool PCB_TEXTBOX::HitTest( const VECTOR2I& aPosition, int aAccuracy ) const
{
 BOX2I rect = GetBoundingBox();
 
 rect.Inflate( aAccuracy );
 
 return rect.Contains( aPosition );
}
 
 
bool PCB_TEXTBOX::HitTest( const BOX2I& aRect, bool aContained, int aAccuracy ) const
{
 BOX2I rect = aRect;
 
 rect.Inflate( aAccuracy );
 
 if( aContained )
 return rect.Contains( GetBoundingBox() );
 
 return rect.Intersects( GetBoundingBox() );
}
 
 
wxString PCB_TEXTBOX::GetSelectMenuText( UNITS_PROVIDER* aUnitsProvider ) const
{
 return wxString::Format( _( "PCB Text Box on %s"), GetLayerName() );
}
 
 
BITMAPS PCB_TEXTBOX::GetMenuImage() const
{
 return BITMAPS::add_textbox;
}
 
 
EDA_ITEM* PCB_TEXTBOX::Clone() const
{
 return new PCB_TEXTBOX( *this );
}
 
 
void PCB_TEXTBOX::swapData( BOARD_ITEM* aImage )
{
 assert( aImage->Type() == PCB_TEXTBOX_T );
 
 std::swap( *((PCB_TEXTBOX*) this), *((PCB_TEXTBOX*) aImage) );
}
 
 
std::shared_ptr<SHAPE> PCB_TEXTBOX::GetEffectiveShape( PCB_LAYER_ID aLayer, FLASHING aFlash ) const
{
 std::shared_ptr<SHAPE_COMPOUND> shape = GetEffectiveTextShape();
 
 if( PCB_SHAPE::GetStroke().GetWidth() >= 0 )
 shape->AddShape( PCB_SHAPE::GetEffectiveShape( aLayer, aFlash ) );
 
 return shape;
}
 
 
void PCB_TEXTBOX::TransformTextToPolySet( SHAPE_POLY_SET& aBuffer, PCB_LAYER_ID aLayer,
 int aClearance, int aError, ERROR_LOC aErrorLoc ) const
{
 KIGFX::GAL_DISPLAY_OPTIONS empty_opts;
 KIFONT::FONT* font = getDrawFont();
 int penWidth = GetEffectiveTextPenWidth();
 
 // Note: this function is mainly used in 3D viewer.
 // the polygonal shape of a text can have many basic shapes,
 // so combining these shapes can be very useful to create a final shape
 // swith a lot less vertices to speedup calculations using this final shape
 // Simplify shapes is not usually always efficient, but in this case it is.
 SHAPE_POLY_SET buffer;
 
 CALLBACK_GAL callback_gal( empty_opts,
 // Stroke callback
 [&]( const VECTOR2I& aPt1, const VECTOR2I& aPt2 )
 {
 TransformOvalToPolygon( buffer, aPt1, aPt2, penWidth + ( 2 * aClearance ), aError,
 ERROR_INSIDE );
 },
 // Triangulation callback
 [&]( const VECTOR2I& aPt1, const VECTOR2I& aPt2, const VECTOR2I& aPt3 )
 {
 buffer.NewOutline();
 
 for( const VECTOR2I& point : { aPt1, aPt2, aPt3 } )
 buffer.Append( point.x, point.y );
 } );
 
 font->Draw( &callback_gal, GetShownText(), GetDrawPos(), GetAttributes() );
 
 buffer.Simplify( SHAPE_POLY_SET::PM_FAST );
 aBuffer.Append( buffer );
}
 
 
void PCB_TEXTBOX::TransformShapeToPolygon( SHAPE_POLY_SET& aBuffer, PCB_LAYER_ID aLayer,
 int aClearance, int aError, ERROR_LOC aErrorLoc,
 bool aIgnoreLineWidth ) const
{
 // Don't use PCB_SHAPE::TransformShapeToPolygon. We want to treat the textbox as filled even
 // if there's no background colour.
 
 std::vector<VECTOR2I> pts = GetRectCorners();
 
 aBuffer.NewOutline();
 
 for( const VECTOR2I& pt : pts )
 aBuffer.Append( pt );
 
 int width = GetWidth() + ( 2 * aClearance );
 
 if( width > 0 )
 {
 // Add in segments
 TransformOvalToPolygon( aBuffer, pts[0], pts[1], width, aError, aErrorLoc );
 TransformOvalToPolygon( aBuffer, pts[1], pts[2], width, aError, aErrorLoc );
 TransformOvalToPolygon( aBuffer, pts[2], pts[3], width, aError, aErrorLoc );
 TransformOvalToPolygon( aBuffer, pts[3], pts[0], width, aError, aErrorLoc );
 }
}
 
 
static struct PCB_TEXTBOX_DESC
{
 PCB_TEXTBOX_DESC()
 {
 PROPERTY_MANAGER& propMgr = PROPERTY_MANAGER::Instance();
 REGISTER_TYPE( PCB_TEXTBOX );
 propMgr.AddTypeCast( new TYPE_CAST<PCB_TEXTBOX, PCB_SHAPE> );
 propMgr.AddTypeCast( new TYPE_CAST<PCB_TEXTBOX, EDA_TEXT> );
 propMgr.InheritsAfter( TYPE_HASH( PCB_TEXTBOX ), TYPE_HASH( PCB_SHAPE ) );
 propMgr.InheritsAfter( TYPE_HASH( PCB_TEXTBOX ), TYPE_HASH( EDA_TEXT ) );
 
 propMgr.Mask( TYPE_HASH( PCB_TEXTBOX ), TYPE_HASH( EDA_SHAPE ), _HKI( "Shape" ) );
 propMgr.Mask( TYPE_HASH( PCB_TEXTBOX ), TYPE_HASH( EDA_SHAPE ), _HKI( "Start X" ) );
 propMgr.Mask( TYPE_HASH( PCB_TEXTBOX ), TYPE_HASH( EDA_SHAPE ), _HKI( "Start Y" ) );
 propMgr.Mask( TYPE_HASH( PCB_TEXTBOX ), TYPE_HASH( EDA_SHAPE ), _HKI( "End X" ) );
 propMgr.Mask( TYPE_HASH( PCB_TEXTBOX ), TYPE_HASH( EDA_SHAPE ), _HKI( "End Y" ) );
 propMgr.Mask( TYPE_HASH( PCB_TEXTBOX ), TYPE_HASH( EDA_SHAPE ), _HKI( "Line Width" ) );
 }
} _PCB_TEXTBOX_DESC;