mirror of https://gitlab.com/kicad/code/kicad.git
505 lines
14 KiB
C++
505 lines
14 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) 2014 CERN
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* Copyright (C) 2018-2023 KiCad Developers, see AUTHORS.txt for contributors.
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* @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
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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 <functional>
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#include <macros.h>
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#include <gal/graphics_abstraction_layer.h>
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#include <sch_item.h>
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#include <sch_line.h>
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#include <sch_painter.h>
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#include <tool/tool_manager.h>
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#include <settings/app_settings.h>
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#include <trigo.h>
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#include <view/view.h>
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#include "ee_grid_helper.h"
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EE_GRID_HELPER::EE_GRID_HELPER( TOOL_MANAGER* aToolMgr ) :
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GRID_HELPER( aToolMgr )
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{
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KIGFX::VIEW* view = m_toolMgr->GetView();
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m_viewAxis.SetSize( 20000 );
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m_viewAxis.SetStyle( KIGFX::ORIGIN_VIEWITEM::CROSS );
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m_viewAxis.SetColor( COLOR4D( 0.0, 0.1, 0.4, 0.8 ) );
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m_viewAxis.SetDrawAtZero( true );
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view->Add( &m_viewAxis );
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view->SetVisible( &m_viewAxis, false );
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m_viewSnapPoint.SetStyle( KIGFX::ORIGIN_VIEWITEM::CIRCLE_CROSS );
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m_viewSnapPoint.SetColor( COLOR4D( 0.0, 0.1, 0.4, 1.0 ) );
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m_viewSnapPoint.SetDrawAtZero( true );
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view->Add( &m_viewSnapPoint );
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view->SetVisible( &m_viewSnapPoint, false );
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m_viewSnapLine.SetStyle( KIGFX::ORIGIN_VIEWITEM::DASH_LINE );
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m_viewSnapLine.SetColor( COLOR4D( 0.33, 0.55, 0.95, 1.0 ) );
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m_viewSnapLine.SetDrawAtZero( true );
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view->Add( &m_viewSnapLine );
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view->SetVisible( &m_viewSnapLine, false );
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}
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VECTOR2I EE_GRID_HELPER::BestDragOrigin( const VECTOR2I& aMousePos, GRID_HELPER_GRIDS aGrid,
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const EE_SELECTION& aItems )
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{
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clearAnchors();
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// If we're working with any connectable objects, skip non-connectable objects
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// since they are often off-grid, e.g. text anchors
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bool hasConnectables = false;
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for( EDA_ITEM* item : aItems )
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{
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GRID_HELPER_GRIDS grid = GetItemGrid( static_cast<SCH_ITEM*>( item ) );
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if( grid == GRID_CONNECTABLE || grid == GRID_WIRES )
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{
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hasConnectables = true;
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break;
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}
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}
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for( EDA_ITEM* item : aItems )
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computeAnchors( static_cast<SCH_ITEM*>( item ), aMousePos, true, !hasConnectables );
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double worldScale = m_toolMgr->GetView()->GetGAL()->GetWorldScale();
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double lineSnapMinCornerDistance = 50.0 / worldScale;
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ANCHOR* nearestOutline = nearestAnchor( aMousePos, OUTLINE, aGrid );
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ANCHOR* nearestCorner = nearestAnchor( aMousePos, CORNER, aGrid );
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ANCHOR* nearestOrigin = nearestAnchor( aMousePos, ORIGIN, aGrid );
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ANCHOR* best = nullptr;
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double minDist = std::numeric_limits<double>::max();
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if( nearestOrigin )
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{
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minDist = nearestOrigin->Distance( aMousePos );
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best = nearestOrigin;
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}
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if( nearestCorner )
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{
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double dist = nearestCorner->Distance( aMousePos );
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if( dist < minDist )
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{
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minDist = dist;
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best = nearestCorner;
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}
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}
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if( nearestOutline )
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{
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double dist = nearestOutline->Distance( aMousePos );
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if( minDist > lineSnapMinCornerDistance && dist < minDist )
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best = nearestOutline;
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}
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return best ? best->pos : aMousePos;
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}
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VECTOR2I EE_GRID_HELPER::BestSnapAnchor( const VECTOR2I& aOrigin, GRID_HELPER_GRIDS aGrid,
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SCH_ITEM* aSkip )
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{
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EE_SELECTION skipItems;
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skipItems.Add( aSkip );
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return BestSnapAnchor( aOrigin, aGrid, skipItems );
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}
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VECTOR2I EE_GRID_HELPER::BestSnapAnchor( const VECTOR2I& aOrigin, GRID_HELPER_GRIDS aGrid,
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const EE_SELECTION& aSkip )
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{
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constexpr int snapRange = SNAP_RANGE * schIUScale.IU_PER_MILS;
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VECTOR2I pt = aOrigin;
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VECTOR2I snapDist( snapRange, snapRange );
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bool snapLineX = false;
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bool snapLineY = false;
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bool snapPoint = false;
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bool gridChecked = false;
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BOX2I bb( VECTOR2I( aOrigin.x - snapRange / 2, aOrigin.y - snapRange / 2 ),
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VECTOR2I( snapRange, snapRange ) );
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clearAnchors();
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for( SCH_ITEM* item : queryVisible( bb, aSkip ) )
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computeAnchors( item, aOrigin );
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ANCHOR* nearest = nearestAnchor( aOrigin, SNAPPABLE, aGrid );
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VECTOR2I nearestGrid = Align( aOrigin, aGrid );
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if( m_enableSnapLine && m_snapItem && m_skipPoint != VECTOR2I( m_viewSnapLine.GetPosition() ) )
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{
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if( std::abs( m_viewSnapLine.GetPosition().x - aOrigin.x ) < snapDist.x )
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{
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pt.x = m_viewSnapLine.GetPosition().x;
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snapDist.x = std::abs( m_viewSnapLine.GetPosition().x - aOrigin.x );
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snapLineX = true;
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}
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if( std::abs( m_viewSnapLine.GetPosition().y - aOrigin.y ) < snapDist.y )
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{
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pt.y = m_viewSnapLine.GetPosition().y;
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snapDist.y = std::abs( m_viewSnapLine.GetPosition().y - aOrigin.y );
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snapLineY = true;
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}
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if( canUseGrid() && std::abs( nearestGrid.x - aOrigin.x ) < snapDist.x )
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{
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pt.x = nearestGrid.x;
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snapDist.x = std::abs( nearestGrid.x - aOrigin.x );
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snapLineX = false;
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}
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if( canUseGrid() && std::abs( nearestGrid.y - aOrigin.y ) < snapDist.y )
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{
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pt.y = nearestGrid.y;
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snapDist.y = std::abs( nearestGrid.y - aOrigin.y );
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snapLineY = false;
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}
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gridChecked = true;
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}
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if( m_enableSnap && nearest && nearest->Distance( aOrigin ) < snapDist.EuclideanNorm() )
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{
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if( canUseGrid() && ( nearestGrid - aOrigin ).EuclideanNorm() < snapDist.EuclideanNorm() )
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{
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pt = nearestGrid;
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snapDist.x = std::abs( nearestGrid.x - aOrigin.x );
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snapDist.y = std::abs( nearestGrid.y - aOrigin.y );
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snapPoint = false;
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}
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else
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{
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pt = nearest->pos;
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snapDist.x = std::abs( nearest->pos.x - aOrigin.x );
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snapDist.y = std::abs( nearest->pos.y - aOrigin.y );
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snapPoint = true;
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}
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snapLineX = snapLineY = false;
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gridChecked = true;
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}
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if( canUseGrid() && !gridChecked )
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pt = nearestGrid;
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if( snapLineX || snapLineY )
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{
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m_viewSnapLine.SetEndPosition( pt );
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if( m_toolMgr->GetView()->IsVisible( &m_viewSnapLine ) )
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m_toolMgr->GetView()->Update( &m_viewSnapLine, KIGFX::GEOMETRY );
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else
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m_toolMgr->GetView()->SetVisible( &m_viewSnapLine, true );
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}
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else if( snapPoint )
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{
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m_snapItem = nearest;
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m_viewSnapPoint.SetPosition( pt );
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m_viewSnapLine.SetPosition( pt );
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m_toolMgr->GetView()->SetVisible( &m_viewSnapLine, false );
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if( m_toolMgr->GetView()->IsVisible( &m_viewSnapPoint ) )
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m_toolMgr->GetView()->Update( &m_viewSnapPoint, KIGFX::GEOMETRY);
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else
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m_toolMgr->GetView()->SetVisible( &m_viewSnapPoint, true );
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}
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else
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{
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m_toolMgr->GetView()->SetVisible( &m_viewSnapPoint, false );
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m_toolMgr->GetView()->SetVisible( &m_viewSnapLine, false );
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}
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return pt;
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}
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VECTOR2D EE_GRID_HELPER::GetGridSize( GRID_HELPER_GRIDS aGrid ) const
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{
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const GRID_SETTINGS& grid = m_toolMgr->GetSettings()->m_Window.grid;
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int idx = -1;
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VECTOR2D g = m_toolMgr->GetView()->GetGAL()->GetGridSize();
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if( !grid.overrides_enabled )
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return g;
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switch( aGrid )
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{
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case GRID_CONNECTABLE:
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if( grid.override_connected )
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idx = grid.override_connected_idx;
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break;
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case GRID_WIRES:
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if( grid.override_wires )
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idx = grid.override_wires_idx;
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break;
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case GRID_TEXT:
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if( grid.override_text )
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idx = grid.override_text_idx;
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break;
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case GRID_GRAPHICS:
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if( grid.override_graphics )
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idx = grid.override_graphics_idx;
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break;
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default:
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break;
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}
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if( idx >= 0 && idx < (int) grid.grids.size() )
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g = grid.grids[idx].ToDouble( schIUScale );
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return g;
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}
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SCH_ITEM* EE_GRID_HELPER::GetSnapped() const
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{
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if( !m_snapItem )
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return nullptr;
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return static_cast<SCH_ITEM*>( m_snapItem->item );
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}
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std::set<SCH_ITEM*> EE_GRID_HELPER::queryVisible( const BOX2I& aArea,
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const EE_SELECTION& aSkipList ) const
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{
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std::set<SCH_ITEM*> items;
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std::vector<KIGFX::VIEW::LAYER_ITEM_PAIR> selectedItems;
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KIGFX::VIEW* view = m_toolMgr->GetView();
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view->Query( aArea, selectedItems );
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for( const KIGFX::VIEW::LAYER_ITEM_PAIR& it : selectedItems )
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{
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SCH_ITEM* item = static_cast<SCH_ITEM*>( it.first );
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// The item must be visible and on an active layer
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if( view->IsVisible( item ) && item->ViewGetLOD( it.second, view ) < view->GetScale() )
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items.insert ( item );
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}
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for( EDA_ITEM* skipItem : aSkipList )
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items.erase( static_cast<SCH_ITEM*>( skipItem ) );
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return items;
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}
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GRID_HELPER_GRIDS EE_GRID_HELPER::GetSelectionGrid( const SELECTION& aSelection ) const
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{
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GRID_HELPER_GRIDS grid = GetItemGrid( aSelection.Front() );
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// Find the largest grid of all the items and use that
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for( EDA_ITEM* item : aSelection )
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{
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GRID_HELPER_GRIDS itemGrid = GetItemGrid( item );
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if( GetGridSize( itemGrid ) > GetGridSize( grid ) )
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grid = itemGrid;
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}
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return grid;
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}
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GRID_HELPER_GRIDS EE_GRID_HELPER::GetItemGrid( const EDA_ITEM* aItem ) const
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{
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if( !aItem )
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return GRID_CURRENT;
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switch( aItem->Type() )
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{
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case LIB_SYMBOL_T:
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case LIB_PIN_T:
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case SCH_SYMBOL_T:
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case SCH_PIN_T:
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case SCH_SHEET_PIN_T:
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case SCH_SHEET_T:
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case SCH_NO_CONNECT_T:
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case SCH_GLOBAL_LABEL_T:
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case SCH_HIER_LABEL_T:
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case SCH_LABEL_T:
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case SCH_DIRECTIVE_LABEL_T:
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return GRID_CONNECTABLE;
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case LIB_FIELD_T:
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case SCH_FIELD_T:
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case LIB_TEXT_T:
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case SCH_TEXT_T:
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return GRID_TEXT;
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case LIB_SHAPE_T:
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case SCH_SHAPE_T:
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// The text box's border lines are what need to be on the graphic grid
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case LIB_TEXTBOX_T:
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case SCH_TEXTBOX_T:
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case SCH_BITMAP_T:
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return GRID_GRAPHICS;
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case SCH_JUNCTION_T:
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return GRID_WIRES;
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case SCH_LINE_T:
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if( static_cast<const SCH_LINE*>( aItem )->IsConnectable() )
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return GRID_WIRES;
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else
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return GRID_GRAPHICS;
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case SCH_BUS_BUS_ENTRY_T:
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case SCH_BUS_WIRE_ENTRY_T:
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return GRID_WIRES;
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default:
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return GRID_CURRENT;
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}
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}
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void EE_GRID_HELPER::computeAnchors( SCH_ITEM *aItem, const VECTOR2I &aRefPos, bool aFrom,
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bool aIncludeText )
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{
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bool isGraphicLine =
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aItem->Type() == SCH_LINE_T && static_cast<SCH_LINE*>( aItem )->IsGraphicLine();
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switch( aItem->Type() )
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{
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case SCH_TEXT_T:
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case SCH_TEXTBOX_T:
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case SCH_FIELD_T:
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{
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if( aIncludeText )
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addAnchor( aItem->GetPosition(), ORIGIN, aItem );
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break;
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}
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case SCH_SYMBOL_T:
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case SCH_SHEET_T:
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addAnchor( aItem->GetPosition(), ORIGIN, aItem );
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KI_FALLTHROUGH;
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case SCH_JUNCTION_T:
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case SCH_NO_CONNECT_T:
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case SCH_LINE_T:
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// Don't add anchors for graphic lines unless we're including text,
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// they may be on a non-connectable grid
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if( isGraphicLine && !aIncludeText )
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break;
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KI_FALLTHROUGH;
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case SCH_GLOBAL_LABEL_T:
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case SCH_HIER_LABEL_T:
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case SCH_LABEL_T:
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case SCH_DIRECTIVE_LABEL_T:
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case SCH_BUS_WIRE_ENTRY_T:
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case SCH_SHEET_PIN_T:
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{
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std::vector<VECTOR2I> pts = aItem->GetConnectionPoints();
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for( const VECTOR2I& pt : pts )
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addAnchor( VECTOR2I( pt ), SNAPPABLE | CORNER, aItem );
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break;
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}
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default:
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break;
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}
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// Don't add anchors for graphic lines unless we're including text,
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// they may be on a non-connectable grid
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if( aItem->Type() == SCH_LINE_T && ( aIncludeText || !isGraphicLine ) )
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{
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SCH_LINE* line = static_cast<SCH_LINE*>( aItem );
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VECTOR2I pt = Align( aRefPos );
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if( line->GetStartPoint().x == line->GetEndPoint().x )
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{
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VECTOR2I possible( line->GetStartPoint().x, pt.y );
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if( TestSegmentHit( possible, line->GetStartPoint(), line->GetEndPoint(), 0 ) )
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addAnchor( possible, SNAPPABLE | VERTICAL, aItem );
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}
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else if( line->GetStartPoint().y == line->GetEndPoint().y )
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{
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VECTOR2I possible( pt.x, line->GetStartPoint().y );
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if( TestSegmentHit( possible, line->GetStartPoint(), line->GetEndPoint(), 0 ) )
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addAnchor( possible, SNAPPABLE | HORIZONTAL, aItem );
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}
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}
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}
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EE_GRID_HELPER::ANCHOR* EE_GRID_HELPER::nearestAnchor( const VECTOR2I& aPos, int aFlags,
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GRID_HELPER_GRIDS aGrid )
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{
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double minDist = std::numeric_limits<double>::max();
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ANCHOR* best = nullptr;
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for( ANCHOR& a : m_anchors )
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{
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SCH_ITEM* item = static_cast<SCH_ITEM*>( a.item );
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if( ( aFlags & a.flags ) != aFlags )
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continue;
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if( aGrid == GRID_CONNECTABLE && !item->IsConnectable() )
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continue;
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else if( aGrid == GRID_GRAPHICS && item->IsConnectable() )
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continue;
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double dist = a.Distance( aPos );
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if( dist < minDist )
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{
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minDist = dist;
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best = &a;
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}
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}
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return best;
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}
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