118 lines
3.7 KiB
C++
118 lines
3.7 KiB
C++
/*
|
|
* This program source code file is part of KiCad, a free EDA CAD application.
|
|
*
|
|
* Copyright (C) 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 <preview_items/draw_context.h>
|
|
|
|
#include <preview_items/preview_utils.h>
|
|
|
|
#include <view/view.h>
|
|
|
|
using namespace KIGFX::PREVIEW;
|
|
|
|
|
|
static constexpr double ANGLE_EPSILON = 1e-9;
|
|
|
|
static bool angleIsSpecial( double aRadians )
|
|
{
|
|
return std::fabs( std::remainder( aRadians, M_PI_4 ) ) < ANGLE_EPSILON;
|
|
}
|
|
|
|
|
|
static COLOR4D deemphasise( const COLOR4D& aColor, bool aDeEmphasised )
|
|
{
|
|
return aColor.WithAlpha( PreviewOverlayDeemphAlpha( aDeEmphasised ) );
|
|
}
|
|
|
|
|
|
DRAW_CONTEXT::DRAW_CONTEXT( KIGFX::VIEW& aView )
|
|
: m_gal( *aView.GetGAL() ),
|
|
m_render_settings( *aView.GetPainter()->GetSettings() ),
|
|
m_currLayer( LAYER_AUX_ITEMS ),
|
|
m_lineWidth( 1.0f )
|
|
{
|
|
}
|
|
|
|
|
|
void DRAW_CONTEXT::DrawCircle( const VECTOR2I& aOrigin, double aRad, bool aDeEmphasised )
|
|
{
|
|
const COLOR4D& color = m_render_settings.GetLayerColor( m_currLayer );
|
|
|
|
m_gal.SetLineWidth( m_lineWidth );
|
|
m_gal.SetStrokeColor( deemphasise( color, aDeEmphasised ) );
|
|
m_gal.SetIsStroke( true );
|
|
m_gal.SetIsFill( false );
|
|
m_gal.DrawCircle( aOrigin, aRad );
|
|
}
|
|
|
|
|
|
void DRAW_CONTEXT::DrawArcWithAngleHighlight(
|
|
const VECTOR2I& aOrigin, double aRad, double aStartAngle, double aEndAngle )
|
|
{
|
|
COLOR4D color = m_render_settings.GetLayerColor( m_currLayer );
|
|
|
|
if( angleIsSpecial( aStartAngle - aEndAngle ) )
|
|
color = getSpecialAngleColour();
|
|
|
|
m_gal.SetLineWidth( m_lineWidth );
|
|
m_gal.SetIsStroke( true );
|
|
m_gal.SetIsFill( true );
|
|
m_gal.SetStrokeColor( color );
|
|
m_gal.SetFillColor( color.WithAlpha( 0.2 ) );
|
|
|
|
// draw the angle reference arc
|
|
m_gal.DrawArc( aOrigin, aRad, -aStartAngle, -aEndAngle );
|
|
}
|
|
|
|
|
|
void DRAW_CONTEXT::DrawLine( const VECTOR2I& aStart, const VECTOR2I& aEnd, bool aDeEmphasised )
|
|
{
|
|
COLOR4D strokeColor = m_render_settings.GetLayerColor( m_currLayer );
|
|
|
|
m_gal.SetLineWidth( m_lineWidth );
|
|
m_gal.SetIsStroke( true );
|
|
m_gal.SetStrokeColor( deemphasise( strokeColor, aDeEmphasised ) );
|
|
m_gal.DrawLine( aStart, aEnd );
|
|
}
|
|
|
|
|
|
void DRAW_CONTEXT::DrawLineWithAngleHighlight(
|
|
const VECTOR2I& aStart, const VECTOR2I& aEnd, bool aDeEmphasised )
|
|
{
|
|
const VECTOR2I vec = aEnd - aStart;
|
|
COLOR4D strokeColor = m_render_settings.GetLayerColor( m_currLayer );
|
|
|
|
if( angleIsSpecial( vec.Angle() ) )
|
|
strokeColor = getSpecialAngleColour();
|
|
|
|
m_gal.SetLineWidth( m_lineWidth );
|
|
m_gal.SetIsStroke( true );
|
|
m_gal.SetStrokeColor( deemphasise( strokeColor, aDeEmphasised ) );
|
|
m_gal.DrawLine( aStart, aEnd );
|
|
}
|
|
|
|
|
|
COLOR4D DRAW_CONTEXT::getSpecialAngleColour() const
|
|
{
|
|
return m_render_settings.IsBackgroundDark() ? COLOR4D( 0.5, 1.0, 0.5, 1.0 ) :
|
|
COLOR4D( 0.0, 0.7, 0.0, 1.0 );
|
|
} |