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kicad/eeschema/bus-wire-junction.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2004 Jean-Pierre Charras, jean-pierre.charras@gipsa-lab.inpg.fr
* Copyright (C) 2004-2019 KiCad Developers, see change_log.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 <fctsys.h>
#include <sch_edit_frame.h>
#include <lib_draw_item.h>
#include <general.h>
#include <sch_bus_entry.h>
#include <sch_junction.h>
#include <sch_line.h>
#include <sch_no_connect.h>
#include <sch_component.h>
#include <sch_sheet.h>
#include <sch_view.h>
#include <tools/ee_actions.h>
#include <tools/ee_selection_tool.h>
#include <tool/tool_manager.h>
#include "eeschema_id.h"
void SCH_EDIT_FRAME::GetSchematicConnections( std::vector< wxPoint >& aConnections )
{
for( SCH_ITEM* item = GetScreen()->GetDrawItems(); item; item = item->Next() )
{
// Avoid items that are changing
if( !( item->GetEditFlags() & ( IS_DRAGGED | IS_MOVED | IS_DELETED ) ) )
item->GetConnectionPoints( aConnections );
}
// We always have some overlapping connection points. Drop duplicates here
std::sort( aConnections.begin(), aConnections.end(),
[]( const wxPoint& a, const wxPoint& b ) -> bool
{ return a.x < b.x || (a.x == b.x && a.y < b.y); } );
aConnections.erase( unique( aConnections.begin(), aConnections.end() ), aConnections.end() );
}
bool SCH_EDIT_FRAME::TestDanglingEnds()
{
std::vector<DANGLING_END_ITEM> endPoints;
bool hasStateChanged = false;
for( SCH_ITEM* item = GetScreen()->GetDrawList().begin(); item; item = item->Next() )
item->GetEndPoints( endPoints );
for( SCH_ITEM* item = GetScreen()->GetDrawList().begin(); item; item = item->Next() )
{
if( item->UpdateDanglingState( endPoints ) )
{
GetCanvas()->GetView()->Update( item, KIGFX::REPAINT );
hasStateChanged = true;
}
}
return hasStateChanged;
}
bool SCH_EDIT_FRAME::TrimWire( const wxPoint& aStart, const wxPoint& aEnd, bool aAppend )
{
SCH_LINE* line;
SCH_ITEM* next_item = NULL;
bool retval = false;
if( aStart == aEnd )
return retval;
for( SCH_ITEM* item = GetScreen()->GetDrawItems(); item; item = next_item )
{
next_item = item->Next();
// Don't remove wires that are already deleted or are currently being dragged
if( item->GetEditFlags() & ( STRUCT_DELETED | IS_DRAGGED | IS_MOVED | SKIP_STRUCT ) )
continue;
if( item->Type() != SCH_LINE_T || item->GetLayer() != LAYER_WIRE )
continue;
line = (SCH_LINE*) item;
if( !IsPointOnSegment( line->GetStartPoint(), line->GetEndPoint(), aStart ) ||
!IsPointOnSegment( line->GetStartPoint(), line->GetEndPoint(), aEnd ) )
{
continue;
}
// Don't remove entire wires
if( ( line->GetStartPoint() == aStart && line->GetEndPoint() == aEnd )
|| ( line->GetStartPoint() == aEnd && line->GetEndPoint() == aStart ) )
{
continue;
}
// Step 1: break the segment on one end. return_line remains line if not broken.
// Ensure that *line points to the segment containing aEnd
SCH_LINE* return_line = line;
aAppend |= BreakSegment( line, aStart, aAppend, &return_line );
if( IsPointOnSegment( return_line->GetStartPoint(), return_line->GetEndPoint(), aEnd ) )
line = return_line;
// Step 2: break the remaining segment. return_line remains line if not broken.
// Ensure that *line _also_ contains aStart. This is our overlapping segment
aAppend |= BreakSegment( line, aEnd, aAppend, &return_line );
if( IsPointOnSegment( return_line->GetStartPoint(), return_line->GetEndPoint(), aStart ) )
line = return_line;
SaveCopyInUndoList( line, UR_DELETED, aAppend );
RemoveFromScreen( line );
aAppend = true;
retval = true;
}
return retval;
}
bool SCH_EDIT_FRAME::SchematicCleanUp( bool aUndo, SCH_SCREEN* aScreen )
{
SCH_ITEM* item = NULL;
SCH_ITEM* secondItem = NULL;
PICKED_ITEMS_LIST itemList;
if( aScreen == nullptr )
aScreen = GetScreen();
auto remove_item = [ &itemList ]( SCH_ITEM* aItem ) -> void
{
aItem->SetFlags( STRUCT_DELETED );
itemList.PushItem( ITEM_PICKER( aItem, UR_DELETED ) );
};
BreakSegmentsOnJunctions( true, aScreen );
for( item = aScreen->GetDrawItems(); item; item = item->Next() )
{
if( ( item->Type() != SCH_LINE_T )
&& ( item->Type() != SCH_JUNCTION_T )
&& ( item->Type() != SCH_NO_CONNECT_T ) )
continue;
if( item->GetEditFlags() & STRUCT_DELETED )
continue;
// Remove unneeded junctions
if( ( item->Type() == SCH_JUNCTION_T )
&& ( !aScreen->IsJunctionNeeded( item->GetPosition() ) ) )
{
remove_item( item );
continue;
}
// Remove zero-length lines
if( item->Type() == SCH_LINE_T
&& ( (SCH_LINE*) item )->IsNull() )
{
remove_item( item );
continue;
}
for( secondItem = item->Next(); secondItem; secondItem = secondItem->Next() )
{
if( item->Type() != secondItem->Type()
|| ( secondItem->GetEditFlags() & STRUCT_DELETED ) )
continue;
// Merge overlapping lines
if( item->Type() == SCH_LINE_T )
{
SCH_LINE* firstLine = (SCH_LINE*) item;
SCH_LINE* secondLine = (SCH_LINE*) secondItem;
SCH_LINE* line = NULL;
bool needed = false;
if( !secondLine->IsParallel( firstLine )
|| secondLine->GetLineStyle() != firstLine->GetLineStyle()
|| secondLine->GetLineColor() != firstLine->GetLineColor()
|| secondLine->GetLineSize() != firstLine->GetLineSize() )
continue;
// Remove identical lines
if( firstLine->IsEndPoint( secondLine->GetStartPoint() )
&& firstLine->IsEndPoint( secondLine->GetEndPoint() ) )
{
remove_item( secondItem );
continue;
}
// If the end points overlap, check if we still need the junction
if( secondLine->IsEndPoint( firstLine->GetStartPoint() ) )
needed = aScreen->IsJunctionNeeded( firstLine->GetStartPoint() );
else if( secondLine->IsEndPoint( firstLine->GetEndPoint() ) )
needed = aScreen->IsJunctionNeeded( firstLine->GetEndPoint() );
if( !needed && ( line = (SCH_LINE*) secondLine->MergeOverlap( firstLine ) ) )
{
remove_item( item );
remove_item( secondItem );
itemList.PushItem( ITEM_PICKER( line, UR_NEW ) );
AddToScreen( line, aScreen );
break;
}
}
// Remove duplicate junctions and no-connects
else if( secondItem->GetPosition() == item->GetPosition() )
remove_item( secondItem );
}
}
for( item = aScreen->GetDrawItems(); item; item = secondItem )
{
secondItem = item->Next();
if( item->GetEditFlags() & STRUCT_DELETED )
RemoveFromScreen( item, aScreen );
}
if( itemList.GetCount() && aUndo )
SaveCopyInUndoList( itemList, UR_DELETED, true );
return itemList.GetCount() > 0;
}
bool SCH_EDIT_FRAME::AddMissingJunctions( SCH_SCREEN* aScreen )
{
bool added = false;
auto add_junction = [ & ]( const wxPoint& aPosition ) -> void
{
auto junction = new SCH_JUNCTION( aPosition );
AddToScreen( junction, aScreen );
BreakSegments( aPosition, false );
added = true;
};
for( auto item = aScreen->GetDrawItems(); item; item = item->Next() )
{
if( item->Type() == SCH_LINE_T )
{
auto line = static_cast<SCH_LINE*>( item );
if( aScreen->IsJunctionNeeded( line->GetStartPoint(), true ) )
add_junction( line->GetStartPoint() );
if( aScreen->IsJunctionNeeded( line->GetEndPoint(), true ) )
add_junction( line->GetEndPoint() );
}
}
return added;
}
void SCH_EDIT_FRAME::NormalizeSchematicOnFirstLoad()
{
BreakSegmentsOnJunctions();
SchematicCleanUp();
SCH_SHEET_LIST list( g_RootSheet );
for( const auto& sheet : list )
AddMissingJunctions( sheet.LastScreen() );
}
bool SCH_EDIT_FRAME::BreakSegment( SCH_LINE* aSegment, const wxPoint& aPoint,
bool aAppend, SCH_LINE** aNewSegment,
SCH_SCREEN* aScreen )
{
if( !IsPointOnSegment( aSegment->GetStartPoint(), aSegment->GetEndPoint(), aPoint )
|| aSegment->IsEndPoint( aPoint ) )
return false;
if( aScreen == nullptr )
aScreen = GetScreen();
SCH_LINE* newSegment = new SCH_LINE( *aSegment );
newSegment->SetStartPoint( aPoint );
AddToScreen( newSegment, aScreen );
SaveCopyInUndoList( newSegment, UR_NEW, aAppend );
SaveCopyInUndoList( aSegment, UR_CHANGED, true );
RefreshItem( aSegment );
aSegment->SetEndPoint( aPoint );
if( aNewSegment )
*aNewSegment = newSegment;
return true;
}
bool SCH_EDIT_FRAME::BreakSegments( const wxPoint& aPoint, bool aAppend, SCH_SCREEN* aScreen )
{
if( aScreen == nullptr )
aScreen = GetScreen();
bool brokenSegments = false;
for( SCH_ITEM* segment = aScreen->GetDrawItems(); segment; segment = segment->Next() )
{
if( ( segment->Type() != SCH_LINE_T ) || ( segment->GetLayer() == LAYER_NOTES ) )
continue;
brokenSegments |= BreakSegment( (SCH_LINE*) segment, aPoint,
aAppend || brokenSegments, NULL, aScreen );
}
return brokenSegments;
}
bool SCH_EDIT_FRAME::BreakSegmentsOnJunctions( bool aAppend, SCH_SCREEN* aScreen )
{
if( aScreen == nullptr )
aScreen = GetScreen();
bool brokenSegments = false;
for( SCH_ITEM* item = aScreen->GetDrawItems(); item; item = item->Next() )
{
if( item->Type() == SCH_JUNCTION_T )
{
SCH_JUNCTION* junction = ( SCH_JUNCTION* ) item;
if( BreakSegments( junction->GetPosition(), brokenSegments || aAppend, aScreen ) )
brokenSegments = true;
}
else
{
SCH_BUS_ENTRY_BASE* busEntry = dynamic_cast<SCH_BUS_ENTRY_BASE*>( item );
if( busEntry )
{
if( BreakSegments( busEntry->GetPosition(), brokenSegments || aAppend, aScreen ) )
brokenSegments = true;
if( BreakSegments( busEntry->m_End(), brokenSegments || aAppend, aScreen ) )
brokenSegments = true;
}
}
}
return brokenSegments;
}
void SCH_EDIT_FRAME::DeleteJunction( SCH_ITEM* aJunction, bool aAppend )
{
SCH_SCREEN* screen = GetScreen();
PICKED_ITEMS_LIST itemList;
auto remove_item = [ & ]( SCH_ITEM* aItem ) -> void
{
aItem->SetFlags( STRUCT_DELETED );
itemList.PushItem( ITEM_PICKER( aItem, UR_DELETED ) );
RemoveFromScreen( aItem );
};
remove_item( aJunction );
for( SCH_ITEM* item = screen->GetDrawItems(); item; item = item->Next() )
{
SCH_LINE* firstLine = dynamic_cast<SCH_LINE*>( item );
if( !firstLine || !firstLine->IsEndPoint( aJunction->GetPosition() )
|| ( firstLine->GetEditFlags() & STRUCT_DELETED ) )
continue;
for( SCH_ITEM* secondItem = item->Next(); secondItem; secondItem = secondItem->Next() )
{
SCH_LINE* secondLine = dynamic_cast<SCH_LINE*>( secondItem );
if( !secondLine || !secondLine->IsEndPoint( aJunction->GetPosition() )
|| ( secondItem->GetEditFlags() & STRUCT_DELETED )
|| !secondLine->IsParallel( firstLine ) )
continue;
// Remove identical lines
if( firstLine->IsEndPoint( secondLine->GetStartPoint() )
&& firstLine->IsEndPoint( secondLine->GetEndPoint() ) )
{
remove_item( secondItem );
continue;
}
// Try to merge the remaining lines
if( SCH_LINE* line = (SCH_LINE*) secondLine->MergeOverlap( firstLine ) )
{
remove_item( item );
remove_item( secondItem );
itemList.PushItem( ITEM_PICKER( line, UR_NEW ) );
AddToScreen( line );
break;
}
}
}
SaveCopyInUndoList( itemList, UR_DELETED, aAppend );
SCH_ITEM* nextitem;
for( SCH_ITEM* item = screen->GetDrawItems(); item; item = nextitem )
{
nextitem = item->Next();
if( item->GetEditFlags() & STRUCT_DELETED )
RemoveFromScreen( item );
}
}
SCH_JUNCTION* SCH_EDIT_FRAME::AddJunction( const wxPoint& aPosition, bool aAppend, bool aFinal )
{
SCH_JUNCTION* junction = new SCH_JUNCTION( aPosition );
bool broken_segments = false;
AddToScreen( junction );
broken_segments = BreakSegments( aPosition, aAppend );
SaveCopyInUndoList( junction, UR_NEW, broken_segments || aAppend );
if( aFinal )
{
TestDanglingEnds();
OnModify();
auto view = GetCanvas()->GetView();
view->ClearPreview();
view->ShowPreview( false );
view->ClearHiddenFlags();
}
return junction;
}
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