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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
*/
/**
* @file bus-wire-junction.cpp
* @brief Code for editing buses, wires, and junctions.
*/
#include <fctsys.h>
#include <gr_basic.h>
#include <sch_draw_panel.h>
#include <sch_edit_frame.h>
#include <lib_draw_item.h>
#include <lib_pin.h>
#include <general.h>
#include <sch_bus_entry.h>
#include <sch_junction.h>
#include <sch_line.h>
#include <sch_no_connect.h>
#include <sch_text.h>
#include <sch_component.h>
#include <sch_sheet.h>
#include <list_operations.h>
#include <sch_view.h>
#include <view/view_group.h>
static void AbortCreateNewLine( EDA_DRAW_PANEL* aPanel, wxDC* aDC );
static void ComputeBreakPoint( SCH_SCREEN* aScreen, SCH_LINE* aSegment, wxPoint& new_pos );
static DLIST< SCH_ITEM > s_wires; // when creating a new set of wires,
// stores here the new wires.
/**
* In a contiguous list of wires, remove wires that backtrack over the previous
* wire. Example:
*
* Wire is added:
* ---------------------------------------->
*
* A second wire backtracks over it:
* -------------------<====================>
*
* RemoveBacktracks is called:
* ------------------->
*/
static void RemoveBacktracks( DLIST<SCH_ITEM>& aWires )
{
EDA_ITEM* first = aWires.GetFirst();
std::vector<SCH_LINE*> last_lines;
for( EDA_ITEM* p = first; p; )
{
SCH_LINE *line = static_cast<SCH_LINE*>( p );
p = line->Next();
if( line->IsNull() )
{
delete s_wires.Remove( line );
continue;
}
if( !last_lines.empty() )
{
SCH_LINE* last_line = last_lines[last_lines.size() - 1];
bool contiguous = ( last_line->GetEndPoint() == line->GetStartPoint() );
bool backtracks = IsPointOnSegment( last_line->GetStartPoint(),
last_line->GetEndPoint(), line->GetEndPoint() );
bool total_backtrack = ( last_line->GetStartPoint() == line->GetEndPoint() );
if( contiguous && backtracks )
{
if( total_backtrack )
{
delete s_wires.Remove( last_line );
delete s_wires.Remove( line );
last_lines.pop_back();
}
else
{
last_line->SetEndPoint( line->GetEndPoint() );
delete s_wires.Remove( line );
}
}
else
{
last_lines.push_back( line );
}
}
else
{
last_lines.push_back( line );
}
}
}
/**
* Mouse capture callback for drawing line segments.
*/
static void DrawSegment( EDA_DRAW_PANEL* aPanel, wxDC* aDC, const wxPoint& aPosition, bool aErase )
{
if( s_wires.GetCount() == 0 )
return;
SCH_EDIT_FRAME* frame = (SCH_EDIT_FRAME*) aPanel->GetParent();
wxPoint endpos = frame->GetCrossHairPosition();
auto view = static_cast<SCH_DRAW_PANEL*>( aPanel )->GetView();
view->ClearPreview();
// Update the bus unfold posture based on the mouse movement
if( frame->m_busUnfold.in_progress && !frame->m_busUnfold.label_placed )
{
auto cursor_delta = frame->GetCursorPosition( false ) - frame->m_busUnfold.origin;
auto entry = frame->m_busUnfold.entry;
bool offset = ( cursor_delta.x < 0 );
char shape = ( offset ? ( ( cursor_delta.y >= 0 ) ? '/' : '\\' )
: ( ( cursor_delta.y >= 0 ) ? '\\' : '/' ) );
// Erase and redraw if necessary
if( shape != entry->GetBusEntryShape() ||
offset != frame->m_busUnfold.offset )
{
entry->SetBusEntryShape( shape );
wxPoint entry_pos = frame->m_busUnfold.origin;
if( offset )
entry_pos -= entry->GetSize();
entry->SetPosition( entry_pos );
frame->m_busUnfold.offset = offset;
frame->RefreshItem( entry );
wxPoint wire_start = ( offset ? entry->GetPosition() : entry->m_End() );
( (SCH_LINE*) s_wires.begin() )->SetStartPoint( wire_start );
}
// Update the label "ghost" position
auto label = frame->m_busUnfold.label;
label->SetPosition( endpos );
view->AddToPreview( label->Clone() );
}
if( frame->GetForceHVLines() ) /* Coerce the line to vertical or horizontal one: */
ComputeBreakPoint( frame->GetScreen(), (SCH_LINE*) s_wires.GetLast()->Back(), endpos );
else
( (SCH_LINE*) s_wires.GetLast() )->SetEndPoint( endpos );
for( SCH_LINE* segment = (SCH_LINE*) s_wires.begin(); segment; segment = segment->Next() )
{
if( !segment->IsNull() ) // Add to preview if segment length != 0
view->AddToPreview( segment->Clone() );
}
}
void SCH_EDIT_FRAME::BeginSegment( int type )
{
SCH_LINE* segment;
SCH_LINE* nextSegment;
wxPoint cursorpos = GetCrossHairPosition();
// We should know if a segment is currently in progress
segment = (SCH_LINE*) GetScreen()->GetCurItem();
if( segment ) // a current item exists, but not necessary a currently edited item
{
if( !segment->GetFlags() || ( segment->Type() != SCH_LINE_T ) ||
( segment->GetLayer() != type ) )
{
if( segment->GetFlags() )
wxLogDebug( wxT( "BeginSegment: item->GetFlags()== %X" ), segment->GetFlags() );
// no wire, bus or graphic line in progress
segment = NULL;
}
}
if( !segment ) // first point : Create the first wire or bus segment
{
switch( type )
{
default:
segment = new SCH_LINE( cursorpos, LAYER_NOTES );
break;
case LAYER_WIRE:
segment = new SCH_LINE( cursorpos, LAYER_WIRE );
/* A junction will be created later, when we'll know the
* segment end position, and if the junction is really needed */
break;
case LAYER_BUS:
segment = new SCH_LINE( cursorpos, LAYER_BUS );
break;
}
segment->SetFlags( IS_NEW );
s_wires.PushBack( segment );
GetScreen()->SetCurItem( segment );
// We need 2 segments to go from a given start pin to an end point when the horizontal
// and vertical lines only switch is on.
if( GetForceHVLines() )
{
nextSegment = new SCH_LINE( *segment );
nextSegment->SetFlags( IS_NEW );
s_wires.PushBack( nextSegment );
GetScreen()->SetCurItem( nextSegment );
}
m_canvas->SetMouseCapture( DrawSegment, AbortCreateNewLine );
SetRepeatItem( NULL );
}
else // A segment is in progress: terminates the current segment and add a new segment.
{
// Place the label for bus unfolding if needed
if( IsBusUnfoldInProgress() && !m_busUnfold.label_placed )
{
wxASSERT( type == LAYER_WIRE );
AddToScreen( m_busUnfold.label );
m_busUnfold.label_placed = true;
nextSegment = new SCH_LINE( cursorpos, LAYER_WIRE );
segment->ClearFlags( IS_NEW );
segment->SetFlags( SELECTED );
nextSegment->SetStartPoint( cursorpos );
nextSegment->SetFlags( IS_NEW );
s_wires.PushBack( nextSegment );
GetScreen()->SetCurItem( nextSegment );
m_canvas->SetMouseCapture( DrawSegment, AbortCreateNewLine );
SetRepeatItem( NULL );
return;
}
SCH_LINE* prevSegment = segment->Back();
// Be aware prevSegment can be null when the horizontal and vertical lines only switch
// is off when we create the first segment.
if( !GetForceHVLines() )
{
// If only one segment is needed and it has a zero length, do not create a new one.
if( segment->IsNull() )
return;
}
else
{
wxCHECK_RET( prevSegment != NULL, wxT( "Failed to create second line segment." ) );
// If two segments are required and they both have zero length, do not
// create a new one.
if( prevSegment && prevSegment->IsNull() && segment->IsNull() )
return;
}
m_canvas->CallMouseCapture( nullptr, wxDefaultPosition, false );
// Terminate the command if the end point is on a pin, junction, or another wire or bus.
if( !IsBusUnfoldInProgress() &&
GetScreen()->IsTerminalPoint( cursorpos, segment->GetLayer() ) )
{
EndSegment();
return;
}
// Create a new segment, and chain it after the current new segment.
nextSegment = new SCH_LINE( *segment );
nextSegment->SetStartPoint( cursorpos );
s_wires.PushBack( nextSegment );
segment->SetEndPoint( cursorpos );
segment->ClearFlags( IS_NEW );
segment->SetFlags( SELECTED );
nextSegment->SetFlags( IS_NEW );
GetScreen()->SetCurItem( nextSegment );
m_canvas->CallMouseCapture( nullptr, wxDefaultPosition, false );
}
}
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->GetFlags() & ( 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;
}
void SCH_EDIT_FRAME::EndSegment()
{
SCH_SCREEN* screen = GetScreen();
SCH_LINE* segment = (SCH_LINE*) screen->GetCurItem();
PICKED_ITEMS_LIST itemList;
if( segment == NULL || segment->Type() != SCH_LINE_T || !segment->IsNew() )
return;
// Remove segments backtracking over others
RemoveBacktracks( s_wires );
if( s_wires.GetCount() == 0 )
return;
// Collect the possible connection points for the new lines
std::vector< wxPoint > connections;
std::vector< wxPoint > new_ends;
GetSchematicConnections( connections );
// Check each new segment for possible junctions and add/split if needed
for( SCH_ITEM* wire = s_wires.GetFirst(); wire; wire=wire->Next() )
{
SCH_LINE* test_line = (SCH_LINE*) wire;
if( wire->GetFlags() & SKIP_STRUCT )
continue;
wire->GetConnectionPoints( new_ends );
for( auto i : connections )
{
if( IsPointOnSegment( test_line->GetStartPoint(), test_line->GetEndPoint(), i ) )
{
new_ends.push_back( i );
}
}
itemList.PushItem( ITEM_PICKER( wire, UR_NEW ) );
}
if( IsBusUnfoldInProgress() && m_busUnfold.label_placed )
{
wxASSERT( m_busUnfold.entry && m_busUnfold.label );
itemList.PushItem( ITEM_PICKER( m_busUnfold.entry, UR_NEW ) );
itemList.PushItem( ITEM_PICKER( m_busUnfold.label, UR_NEW ) );
}
// Get the last non-null wire (this is the last created segment).
SetRepeatItem( segment = (SCH_LINE*) s_wires.GetLast() );
// Add the new wires
AddToScreen( s_wires );
auto view = GetCanvas()->GetView();
view->ClearPreview();
view->ShowPreview( false );
view->ClearHiddenFlags();
SaveCopyInUndoList(itemList, UR_NEW);
// Correct and remove segments that need to be merged.
SchematicCleanUp( true );
for( auto item = GetScreen()->GetDrawItems(); item; item = item->Next() )
{
if( item->Type() != SCH_COMPONENT_T )
continue;
std::vector< wxPoint > pts;
item->GetConnectionPoints( pts );
if( pts.size() > 2 )
continue;
for( auto i = pts.begin(); i != pts.end(); i++ )
for( auto j = i + 1; j != pts.end(); j++ )
TrimWire( *i, *j, true );
}
for( auto i : new_ends )
{
if( screen->IsJunctionNeeded( i, true ) )
AddJunction( i, true, false );
}
if( IsBusUnfoldInProgress() )
{
FinishBusUnfold();
}
TestDanglingEnds();
screen->ClearDrawingState();
screen->SetCurItem( NULL );
m_canvas->EndMouseCapture( -1, -1, wxEmptyString, false );
m_canvas->Refresh();
OnModify();
}
// A helper function to find any sheet pins at the specified position.
static const SCH_SHEET_PIN* getSheetPin( SCH_SCREEN* aScreen, const wxPoint& aPosition )
{
for( SCH_ITEM* item = aScreen->GetDrawItems(); item; item = item->Next() )
{
if( item->Type() == SCH_SHEET_T )
{
SCH_SHEET* sheet = (SCH_SHEET*) item;
for( const SCH_SHEET_PIN& pin : sheet->GetPins() )
{
if( pin.GetPosition() == aPosition )
return &pin;
}
}
}
return nullptr;
}
/**
* Function ComputeBreakPoint
* computes the middle coordinate for 2 segments from the start point to \a aPosition
* with the segments kept in the horizontal or vertical axis only.
*
* @param aSegment A pointer to a #SCH_LINE object containing the first line break point
* to compute.
* @param aPosition A reference to a wxPoint object containing the coordinates of the
* position used to calculate the line break point.
*/
static void ComputeBreakPoint( SCH_SCREEN* aScreen, SCH_LINE* aSegment, wxPoint& aPosition )
{
wxCHECK_RET( aSegment != nullptr, wxT( "Cannot compute break point of NULL line segment." ) );
SCH_LINE* nextSegment = aSegment->Next();
wxPoint midPoint;
int iDx = aSegment->GetEndPoint().x - aSegment->GetStartPoint().x;
int iDy = aSegment->GetEndPoint().y - aSegment->GetStartPoint().y;
const SCH_SHEET_PIN* connectedPin = getSheetPin( aScreen, aSegment->GetStartPoint() );
auto force = connectedPin ? connectedPin->GetEdge() : SCH_SHEET_PIN::SHEET_UNDEFINED_SIDE;
if( force == SCH_SHEET_PIN::SHEET_LEFT_SIDE || force == SCH_SHEET_PIN::SHEET_RIGHT_SIDE )
{
if( aPosition.x == connectedPin->GetPosition().x ) // push outside sheet boundary
{
int direction = ( force == SCH_SHEET_PIN::SHEET_LEFT_SIDE ) ? -1 : 1;
aPosition.x += aScreen->GetGridSize().x * direction;
}
midPoint.x = aPosition.x;
midPoint.y = aSegment->GetStartPoint().y; // force horizontal
}
else if( iDy != 0 ) // keep the first segment orientation (vertical)
{
midPoint.x = aSegment->GetStartPoint().x;
midPoint.y = aPosition.y;
}
else if( iDx != 0 ) // keep the first segment orientation (horizontal)
{
midPoint.x = aPosition.x;
midPoint.y = aSegment->GetStartPoint().y;
}
else
{
if( std::abs( aPosition.x - aSegment->GetStartPoint().x ) <
std::abs( aPosition.y - aSegment->GetStartPoint().y ) )
{
midPoint.x = aSegment->GetStartPoint().x;
midPoint.y = aPosition.y;
}
else
{
midPoint.x = aPosition.x;
midPoint.y = aSegment->GetStartPoint().y;
}
}
aSegment->SetEndPoint( midPoint );
nextSegment->SetStartPoint( midPoint );
nextSegment->SetEndPoint( aPosition );
}
void SCH_EDIT_FRAME::DeleteCurrentSegment()
{
SCH_SCREEN* screen = GetScreen();
SetRepeatItem( NULL );
if( ( screen->GetCurItem() == NULL ) || !screen->GetCurItem()->IsNew() )
return;
RemoveFromScreen( screen->GetCurItem() );
m_canvas->SetMouseCaptureCallback( NULL );
screen->SetCurItem( NULL );
}
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->GetFlags() & ( 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( (SCH_ITEM*)line, UR_DELETED, aAppend );
RemoveFromScreen( (SCH_ITEM*)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->GetFlags() & 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->GetFlags() & 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->GetFlags() & 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->GetFlags() & 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->GetFlags() & 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->GetFlags() & 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;
}
SCH_NO_CONNECT* SCH_EDIT_FRAME::AddNoConnect( const wxPoint& aPosition )
{
SCH_NO_CONNECT* no_connect = new SCH_NO_CONNECT( aPosition );
SetRepeatItem( no_connect );
AddToScreen( no_connect );
SchematicCleanUp();
TestDanglingEnds();
OnModify();
auto view = GetCanvas()->GetView();
view->ClearPreview();
view->ShowPreview( false );
view->ClearHiddenFlags();
SaveCopyInUndoList( no_connect, UR_NEW );
return no_connect;
}
/* Abort function for wire, bus or line creation
*/
static void AbortCreateNewLine( EDA_DRAW_PANEL* aPanel, wxDC* aDC )
{
SCH_SCREEN* screen = (SCH_SCREEN*) aPanel->GetScreen();
SCH_EDIT_FRAME* parent = ( SCH_EDIT_FRAME* ) aPanel->GetParent();
if( screen->GetCurItem() )
{
s_wires.DeleteAll(); // Free the list, for a future usage
screen->SetCurItem( NULL );
}
else
{
parent->SetRepeatItem( NULL );
}
if( parent->IsBusUnfoldInProgress() )
{
parent->CancelBusUnfold();
}
auto view = static_cast<SCH_DRAW_PANEL*>(aPanel)->GetView();
view->ClearPreview();
view->ShowPreview( false );
view->ClearHiddenFlags();
// Clear flags used in edit functions.
screen->ClearDrawingState();
}
void SCH_EDIT_FRAME::RepeatDrawItem()
{
SCH_ITEM* repeater = GetRepeatItem();
if( !repeater )
return;
// clone the repeater, move it, insert into display list, then save a copy
// via SetRepeatItem();
SCH_ITEM* my_clone = (SCH_ITEM*) repeater->Clone();
// If cloning a component then put into 'move' mode.
if( my_clone->Type() == SCH_COMPONENT_T )
{
wxPoint pos = GetCrossHairPosition() - ( (SCH_COMPONENT*) my_clone )->GetPosition();
my_clone->SetFlags( IS_NEW );
( (SCH_COMPONENT*) my_clone )->SetTimeStamp( GetNewTimeStamp() );
my_clone->Move( pos );
PrepareMoveItem( my_clone );
}
else
{
my_clone->Move( GetRepeatStep() );
if( my_clone->CanIncrementLabel() )
( (SCH_TEXT*) my_clone )->IncrementLabel( GetRepeatDeltaLabel() );
AddToScreen( my_clone );
if( my_clone->IsConnectable() )
TestDanglingEnds();
SaveCopyInUndoList( my_clone, UR_NEW );
my_clone->ClearFlags();
}
// clone my_clone, now that it has been moved, thus saving new position.
SetRepeatItem( my_clone );
}
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