void SCH_EDIT_FRAME::EndSegment( wxDC* DC )
{
SCH_SCREEN* screen = GetScreen();
SCH_LINE* segment = (SCH_LINE*) screen->GetCurItem();
if( segment == NULL || segment->Type() != SCH_LINE_T || !segment->IsNew() )
return;
// Delete zero length segments and clear item flags.
SCH_ITEM* item = s_wires.begin();
while( item )
{
item->ClearFlags();
wxCHECK_RET( item->Type() == SCH_LINE_T, wxT( "Unexpected object type in wire list." ) );
segment = (SCH_LINE*) item;
item = item->Next();
if( segment->IsNull() )
delete s_wires.Remove( segment );
}
if( s_wires.GetCount() == 0 )
return;
// Get the last non-null wire (this is the last created segment).
SetRepeatItem( segment = (SCH_LINE*) s_wires.GetLast() );
screen->SetCurItem( NULL );
m_canvas->EndMouseCapture( -1, -1, wxEmptyString, false );
// store the terminal point of this last segment: a junction could be needed
// (the last wire could be merged/deleted/modified, and lost)
wxPoint endpoint = segment->GetEndPoint();
// store the starting point of this first segment: a junction could be needed
SCH_LINE* firstsegment = (SCH_LINE*) s_wires.GetFirst();
wxPoint startPoint = firstsegment->GetStartPoint();
// Save the old wires for the undo command
DLIST< SCH_ITEM > oldWires; // stores here the old wires
GetScreen()->ExtractWires( oldWires, true ); // Save them in oldWires list
// Put the snap shot of the previous wire, buses, and junctions in the undo/redo list.
PICKED_ITEMS_LIST oldItems;
oldItems.m_Status = UR_WIRE_IMAGE;
while( oldWires.GetCount() != 0 )
{
ITEM_PICKER picker = ITEM_PICKER( oldWires.PopFront(), UR_WIRE_IMAGE );
oldItems.PushItem( picker );
}
SaveCopyInUndoList( oldItems, UR_WIRE_IMAGE );
// Remove segments backtracking over others
RemoveBacktracks( s_wires );
// Add the new wires
screen->Append( s_wires );
// Correct and remove segments that need to be merged.
screen->SchematicCleanUp();
// A junction could be needed to connect the end point of the last created segment.
if( screen->IsJunctionNeeded( endpoint ) )
screen->Append( AddJunction( DC, endpoint ) );
// A junction could be needed to connect the start point of the set of new created wires
if( screen->IsJunctionNeeded( startPoint ) )
screen->Append( AddJunction( DC, startPoint ) );
m_canvas->Refresh();
OnModify();
}
void SCH_EDIT_FRAME::BeginSegment( wxDC* DC, 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 ) )
{
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.
{
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( DC, wxDefaultPosition, false );
// Terminate the command if the end point is on a pin, junction, or another wire or bus.
if( GetScreen()->IsTerminalPoint( cursorpos, segment->GetLayer() ) )
{
EndSegment( DC );
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( DC, wxDefaultPosition, false );
}
}