140 lines
4.5 KiB
C++
140 lines
4.5 KiB
C++
/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2019-2023 KiCad Developers, see AUTHORS.txt for contributors.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <gal/graphics_abstraction_layer.h>
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#include <preview_items/draw_context.h>
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#include <preview_items/preview_utils.h>
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#include <view/view.h>
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using namespace KIGFX::PREVIEW;
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using KIGFX::COLOR4D;
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static constexpr double ANGLE_EPSILON = 1e-9;
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static bool angleIsSpecial( EDA_ANGLE aAngle )
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{
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return std::fabs( std::remainder( aAngle.AsRadians(), M_PI_4 ) ) < ANGLE_EPSILON;
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}
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static COLOR4D deemphasise( const COLOR4D& aColor, bool aDeEmphasised )
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{
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return aColor.WithAlpha( PreviewOverlayDeemphAlpha( aDeEmphasised ) );
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}
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DRAW_CONTEXT::DRAW_CONTEXT( KIGFX::VIEW& aView )
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: m_gal( *aView.GetGAL() ),
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m_render_settings( *aView.GetPainter()->GetSettings() ),
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m_currLayer( LAYER_AUX_ITEMS ),
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m_lineWidth( 1.0f )
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{
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}
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void DRAW_CONTEXT::DrawCircle( const VECTOR2I& aOrigin, double aRad, bool aDeEmphasised )
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{
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const COLOR4D& color = m_render_settings.GetLayerColor( m_currLayer );
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m_gal.SetLineWidth( m_lineWidth );
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m_gal.SetStrokeColor( deemphasise( color, aDeEmphasised ) );
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m_gal.SetIsStroke( true );
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m_gal.SetIsFill( false );
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m_gal.DrawCircle( aOrigin, aRad );
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}
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void DRAW_CONTEXT::DrawCircleDashed( const VECTOR2I& aOrigin, double aRad, double aStepAngle,
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double aFillAngle, bool aDeEmphasised )
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{
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const COLOR4D& color = m_render_settings.GetLayerColor( m_currLayer );
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m_gal.SetLineWidth( m_lineWidth );
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m_gal.SetStrokeColor( deemphasise( color, aDeEmphasised ) );
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m_gal.SetIsStroke( true );
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m_gal.SetIsFill( false );
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for( int i = 0; i < 360; i += aStepAngle )
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{
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m_gal.DrawArc( aOrigin, aRad, EDA_ANGLE( i, DEGREES_T ),
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EDA_ANGLE( i + aFillAngle, DEGREES_T ) );
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}
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}
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void DRAW_CONTEXT::DrawLine( const VECTOR2I& aStart, const VECTOR2I& aEnd, bool aDeEmphasised )
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{
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COLOR4D strokeColor = m_render_settings.GetLayerColor( m_currLayer );
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m_gal.SetLineWidth( m_lineWidth );
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m_gal.SetIsStroke( true );
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m_gal.SetStrokeColor( deemphasise( strokeColor, aDeEmphasised ) );
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m_gal.DrawLine( aStart, aEnd );
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}
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void DRAW_CONTEXT::DrawLineDashed( const VECTOR2I& aStart, const VECTOR2I& aEnd, int aDashStep,
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int aDashFill, bool aDeEmphasised )
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{
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COLOR4D strokeColor = m_render_settings.GetLayerColor( m_currLayer );
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m_gal.SetLineWidth( m_lineWidth );
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m_gal.SetIsStroke( true );
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m_gal.SetStrokeColor( deemphasise( strokeColor, aDeEmphasised ) );
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VECTOR2I delta = aEnd - aStart;
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int vecLen = delta.EuclideanNorm();
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for( int i = 0; i < vecLen; i += aDashStep )
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{
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VECTOR2I a = aStart + delta.Resize( i );
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VECTOR2I b = aStart + delta.Resize( std::min( i + aDashFill, vecLen ) );
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m_gal.DrawLine( a, b );
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}
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}
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void DRAW_CONTEXT::DrawLineWithAngleHighlight( const VECTOR2I& aStart, const VECTOR2I& aEnd,
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bool aDeEmphasised )
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{
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const VECTOR2I vec = aEnd - aStart;
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COLOR4D strokeColor = m_render_settings.GetLayerColor( m_currLayer );
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if( angleIsSpecial( EDA_ANGLE( vec ) ) )
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strokeColor = getSpecialAngleColour();
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m_gal.SetLineWidth( m_lineWidth );
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m_gal.SetIsStroke( true );
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m_gal.SetStrokeColor( deemphasise( strokeColor, aDeEmphasised ) );
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m_gal.DrawLine( aStart, aEnd );
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}
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COLOR4D DRAW_CONTEXT::getSpecialAngleColour() const
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{
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return m_render_settings.IsBackgroundDark() ? COLOR4D( 0.5, 1.0, 0.5, 1.0 ) :
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COLOR4D( 0.0, 0.7, 0.0, 1.0 );
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} |