kicad/qa/tools/pns/label_manager.cpp

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#include <gal/graphics_abstraction_layer.h>
#include <gal/color4d.h>
#include <view/view_overlay.h>
#include "label_manager.h"
using KIGFX::GAL;
using KIGFX::COLOR4D;
using KIGFX::VIEW_OVERLAY;
LABEL_MANAGER::LABEL_MANAGER( GAL* aGal ) : m_gal( aGal )
{
};
LABEL_MANAGER::~LABEL_MANAGER()
{
}
void LABEL_MANAGER::Add( VECTOR2I target, wxString msg, COLOR4D color )
{
LABEL lbl;
lbl.m_target = target;
lbl.m_msg = msg;
lbl.m_color = color;
m_gal->SetGlyphSize( VECTOR2D( m_textSize, m_textSize ) );
KIFONT::FONT* strokeFont = KIFONT::FONT::GetFont( wxEmptyString );
UTF8 text( msg );
VECTOR2I textDims = strokeFont->StringBoundaryLimits( text, VECTOR2D( m_textSize, m_textSize ),
m_textSize/8, false, false );
lbl.m_bbox.SetOrigin( lbl.m_target - textDims - VECTOR2I( m_textSize, m_textSize ) );
lbl.m_bbox.SetSize( textDims );
m_labels.push_back( lbl );
}
void LABEL_MANAGER::Add( const SHAPE_LINE_CHAIN& aL, COLOR4D color )
{
for( int i = 0; i < aL.PointCount(); i++ )
{
char msg[1024];
snprintf( msg, sizeof( msg ), "%d", i );
Add( aL.CPoint( i ), msg, color );
}
}
void LABEL_MANAGER::Redraw( VIEW_OVERLAY* aOvl )
{
recalculate();
for( auto& lbl : m_labels )
{
aOvl->SetIsFill( false );
aOvl->SetIsStroke( true );
aOvl->SetLineWidth( 10000 );
aOvl->SetStrokeColor( lbl.m_color.Brighten( 0.7 ) );
aOvl->Rectangle( lbl.m_bbox.GetOrigin(), lbl.m_bbox.GetEnd() );
aOvl->BitmapText( lbl.m_msg, lbl.m_bbox.Centre(), ANGLE_HORIZONTAL );
VECTOR2I nearest = nearestBoxCorner( lbl.m_bbox, lbl.m_target );
aOvl->Line( lbl.m_target, nearest );
}
}
VECTOR2I LABEL_MANAGER::nearestBoxCorner( BOX2I b, VECTOR2I p )
{
VECTOR2I ptest[4] = { b.GetPosition(), b.GetPosition() + VECTOR2I( b.GetWidth(), 0 ),
b.GetPosition() + VECTOR2I( b.GetWidth(), b.GetHeight() ),
b.GetPosition() + VECTOR2I( 0, b.GetHeight() ) };
int bestDist = INT_MAX;
VECTOR2I rv;
for( int i = 0; i < 4; i++ )
{
int dist = ( ptest[i] - p ).EuclideanNorm();
if( dist < bestDist )
{
bestDist = dist;
rv = ptest[i];
}
}
return rv;
}
VECTOR2I LABEL_MANAGER::boxMtv( BOX2I b1, BOX2I b2 )
{
VECTOR2I rv( 0, 0 );
b1.Normalize();
b2.Normalize();
if( !b1.Intersects( b2 ) )
return rv;
int bestDist = INT_MAX;
VECTOR2I p[4] = { b2.GetPosition(), b2.GetPosition() + VECTOR2I( b2.GetWidth(), 0 ),
b2.GetPosition() + VECTOR2I( b2.GetWidth(), b2.GetHeight() ),
b2.GetPosition() + VECTOR2I( 0, b2.GetHeight() ) };
for( int i = 0; i < 4; i++ )
{
if( b1.Contains( p[i] ) )
{
// printf("CONT %d\n", i );
VECTOR2I dp[4] = { VECTOR2I( b1.GetEnd().x - p[i].x + 1, 0 ),
VECTOR2I( b1.GetPosition().x - p[i].x - 1, 0 ),
VECTOR2I( 0, b1.GetEnd().y - p[i].y + 1 ),
VECTOR2I( 0, b1.GetPosition().y - p[i].y - 1 ) };
for( int j = 0; j < 4; j++ )
{
BOX2I btest( b2 );
btest.Move( dp[j] );
if( !b1.Intersects( btest ) )
{
int dist = dp[j].EuclideanNorm();
if( dist < bestDist )
{
bestDist = dist;
rv = dp[j];
}
}
}
}
}
return rv;
}
void LABEL_MANAGER::recalculate()
{
int iterLimit = 5;
while( iterLimit > 0 )
{
bool collisionsFound = false;
for( int i = 0; i < m_labels.size(); i++ )
{
for( int j = 0; j < m_labels.size(); j++ )
{
if( i == j )
continue;
auto bb_i = m_labels[i].m_bbox;
auto bb_j = m_labels[j].m_bbox;
bb_i.Inflate( 100000 );
bb_j.Inflate( 100000 );
VECTOR2I mtv = boxMtv( bb_i, bb_j );
if( mtv.x || mtv.y )
{
m_labels[i].m_bbox.Move( -mtv );
collisionsFound = true;
}
}
}
if( !collisionsFound )
break;
iterLimit--;
}
}