symbol_editor_move_tool.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2019 CERN
 * Copyright (C) 2019-2023 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 <tool/tool_manager.h>
#include <tools/ee_selection_tool.h>
#include <ee_actions.h>
#include <ee_grid_helper.h>
#include <eda_item.h>
#include <gal/graphics_abstraction_layer.h>
#include <sch_shape.h>
#include <sch_commit.h>
#include <wx/debug.h>
#include <view/view_controls.h>
#include "symbol_editor_move_tool.h"
#include "symbol_editor_pin_tool.h"
 
 
SYMBOL_EDITOR_MOVE_TOOL::SYMBOL_EDITOR_MOVE_TOOL() :
 EE_TOOL_BASE( "eeschema.SymbolMoveTool" ),
 m_moveInProgress( false )
{
}
 
 
bool SYMBOL_EDITOR_MOVE_TOOL::Init()
{
 EE_TOOL_BASE::Init();
 
 //
 // Add move actions to the selection tool menu
 //
 CONDITIONAL_MENU& selToolMenu = m_selectionTool->GetToolMenu().GetMenu();
 
 auto canMove =
 [&]( const SELECTION& sel )
 {
 SYMBOL_EDIT_FRAME* editor = static_cast<SYMBOL_EDIT_FRAME*>( m_frame );
 wxCHECK( editor, false );
 
 if( !editor->IsSymbolEditable() )
 return false;
 
 if( editor->IsSymbolAlias() )
 {
 for( EDA_ITEM* item : sel )
 {
 if( item->Type() != SCH_FIELD_T )
 return false;
 }
 }
 
 return true;
 };
 
 selToolMenu.AddItem( EE_ACTIONS::move, canMove && EE_CONDITIONS::IdleSelection, 150 );
 selToolMenu.AddItem( EE_ACTIONS::alignToGrid, canMove && EE_CONDITIONS::IdleSelection, 150 );
 
 return true;
}
 
 
void SYMBOL_EDITOR_MOVE_TOOL::Reset( RESET_REASON aReason )
{
 EE_TOOL_BASE::Reset( aReason );
 
 if( aReason == MODEL_RELOAD )
 m_moveInProgress = false;
}
 
 
int SYMBOL_EDITOR_MOVE_TOOL::Main( const TOOL_EVENT& aEvent )
{
 if( SCH_COMMIT* commit = dynamic_cast<SCH_COMMIT*>( aEvent.Commit() ) )
 {
 wxCHECK( aEvent.SynchronousState(), 0 );
 aEvent.SynchronousState()->store( STS_RUNNING );
 
 if( doMoveSelection( aEvent, commit ) )
 aEvent.SynchronousState()->store( STS_FINISHED );
 else
 aEvent.SynchronousState()->store( STS_CANCELLED );
 }
 else
 {
 SCH_COMMIT localCommit( m_toolMgr );
 
 if( doMoveSelection( aEvent, &localCommit ) )
 localCommit.Push( _( "Move" ) );
 else
 localCommit.Revert();
 }
 
 return 0;
}
 
 
bool SYMBOL_EDITOR_MOVE_TOOL::doMoveSelection( const TOOL_EVENT& aEvent, SCH_COMMIT* aCommit )
{
 KIGFX::VIEW_CONTROLS* controls = getViewControls();
 EE_GRID_HELPER grid( m_toolMgr );
 
 m_anchorPos = { 0, 0 };
 
 // Be sure that there is at least one item that we can move. If there's no selection try
 // looking for the stuff under mouse cursor (i.e. Kicad old-style hover selection).
 EE_SELECTION& selection = m_frame->IsSymbolAlias()
 ? m_selectionTool->RequestSelection( { SCH_FIELD_T } )
 : m_selectionTool->RequestSelection();
 bool unselect = selection.IsHover();
 
 if( !m_frame->IsSymbolEditable() || selection.Empty() )
 return false;
 
 if( m_moveInProgress )
 {
 // The tool hotkey is interpreted as a click when already moving
 m_toolMgr->RunAction( ACTIONS::cursorClick );
 return true;
 }
 
 m_frame->PushTool( aEvent );
 
 Activate();
 // Must be done after Activate() so that it gets set into the correct context
 controls->ShowCursor( true );
 controls->SetAutoPan( true );
 
 bool restore_state = false;
 TOOL_EVENT copy = aEvent;
 TOOL_EVENT* evt = &copy;
 VECTOR2I prevPos;
 VECTOR2I moveOffset;
 
 if( !selection.Front()->IsNew() )
 aCommit->Modify( m_frame->GetCurSymbol(), m_frame->GetScreen() );
 
 m_cursor = controls->GetCursorPosition( !aEvent.DisableGridSnapping() );
 
 // Main loop: keep receiving events
 do
 {
 m_frame->GetCanvas()->SetCurrentCursor( KICURSOR::MOVING );
 grid.SetSnap( !evt->Modifier( MD_SHIFT ) );
 grid.SetUseGrid( getView()->GetGAL()->GetGridSnapping() && !evt->DisableGridSnapping() );
 
 if( evt->IsAction( &EE_ACTIONS::move )
 || evt->IsMotion()
 || evt->IsDrag( BUT_LEFT )
 || evt->IsAction( &ACTIONS::refreshPreview ) )
 {
 if( !m_moveInProgress ) // Prepare to start moving/dragging
 {
 SCH_ITEM* lib_item = static_cast<SCH_ITEM*>( selection.Front() );
 
 // Pick up any synchronized pins
 //
 // Careful when pasting. The pasted pin will be at the same location as it
 // was copied from, leading us to believe it's a synchronized pin. It's not.
 if( m_frame->SynchronizePins() && !( lib_item->GetEditFlags() & IS_PASTED ) )
 {
 std::set<SCH_PIN*> sync_pins;
 
 for( EDA_ITEM* sel_item : selection )
 {
 lib_item = static_cast<SCH_ITEM*>( sel_item );
 
 if( lib_item->Type() == SCH_PIN_T )
 {
 SCH_PIN* cur_pin = static_cast<SCH_PIN*>( lib_item );
 LIB_SYMBOL* symbol = m_frame->GetCurSymbol();
 std::vector<bool> got_unit( symbol->GetUnitCount() + 1 );
 
 got_unit[cur_pin->GetUnit()] = true;
 
 for( SCH_PIN* pin : symbol->GetAllLibPins() )
 {
 if( !got_unit[pin->GetUnit()]
 && pin->GetPosition() == cur_pin->GetPosition()
 && pin->GetOrientation() == cur_pin->GetOrientation()
 && pin->GetBodyStyle() == cur_pin->GetBodyStyle()
 && pin->GetType() == cur_pin->GetType()
 && pin->GetName() == cur_pin->GetName() )
 {
 if( sync_pins.insert( pin ).second )
 got_unit[pin->GetUnit()] = true;
 }
 }
 }
 }
 
 for( SCH_PIN* pin : sync_pins )
 m_selectionTool->AddItemToSel( pin, true /*quiet mode*/ );
 }
 
 // Apply any initial offset in case we're coming from a previous command.
 //
 for( EDA_ITEM* item : selection )
 moveItem( item, moveOffset );
 
 // Set up the starting position and move/drag offset
 //
 m_cursor = controls->GetCursorPosition( !evt->DisableGridSnapping() );
 
 if( lib_item->IsNew() )
 {
 m_anchorPos = selection.GetReferencePoint();
 VECTOR2I delta = m_cursor - m_anchorPos;
 
 // Drag items to the current cursor position
 for( EDA_ITEM* item : selection )
 {
 moveItem( item, delta );
 updateItem( item, false );
 }
 
 m_anchorPos = m_cursor;
 }
 else if( m_frame->GetMoveWarpsCursor() )
 {
 VECTOR2I itemPos = selection.GetTopLeftItem()->GetPosition();
 m_anchorPos = VECTOR2I( itemPos.x, itemPos.y );
 
 getViewControls()->WarpMouseCursor( m_anchorPos, true, true );
 m_cursor = m_anchorPos;
 }
 else
 {
 m_cursor = controls->GetCursorPosition( !evt->DisableGridSnapping() );
 m_anchorPos = m_cursor;
 }
 
 controls->SetCursorPosition( m_cursor, false );
 
 prevPos = m_cursor;
 controls->SetAutoPan( true );
 m_moveInProgress = true;
 }
 
 //------------------------------------------------------------------------
 // Follow the mouse
 //
 m_cursor = grid.BestSnapAnchor( controls->GetCursorPosition( false ),
 grid.GetSelectionGrid( selection ), selection );
 VECTOR2I delta( m_cursor - prevPos );
 m_anchorPos = m_cursor;
 
 moveOffset += delta;
 prevPos = m_cursor;
 
 for( EDA_ITEM* item : selection )
 {
 moveItem( item, delta );
 updateItem( item, false );
 }
 
 m_toolMgr->PostEvent( EVENTS::SelectedItemsMoved );
 }
 //------------------------------------------------------------------------
 // Handle cancel
 //
 else if( evt->IsCancelInteractive() || evt->IsActivate() )
 {
 if( m_moveInProgress )
 {
 evt->SetPassEvent( false );
 restore_state = true;
 }
 
 break;
 }
 //------------------------------------------------------------------------
 // Handle TOOL_ACTION special cases
 //
 else if( evt->Action() == TA_UNDO_REDO_PRE )
 {
 unselect = true;
 break;
 }
 else if( evt->IsAction( &ACTIONS::doDelete ) )
 {
 // Exit on a remove operation; there is no further processing for removed items.
 break;
 }
 else if( evt->IsAction( &ACTIONS::duplicate ) )
 {
 wxBell();
 }
 //------------------------------------------------------------------------
 // Handle context menu
 //
 else if( evt->IsClick( BUT_RIGHT ) )
 {
 m_menu.ShowContextMenu( m_selectionTool->GetSelection() );
 }
 //------------------------------------------------------------------------
 // Handle drop
 //
 else if( evt->IsMouseUp( BUT_LEFT )
 || evt->IsClick( BUT_LEFT )
 || evt->IsDblClick( BUT_LEFT ) )
 {
 if( selection.GetSize() == 1 && selection.Front()->Type() == SCH_PIN_T )
 {
 SYMBOL_EDITOR_PIN_TOOL* pinTool = m_toolMgr->GetTool<SYMBOL_EDITOR_PIN_TOOL>();
 
 try
 {
 SCH_PIN* curr_pin = static_cast<SCH_PIN*>( selection.Front() );
 
 if( pinTool->PlacePin( curr_pin ) )
 {
 // PlacePin() clears the current selection, which we don't want. Not only
 // is it a poor user experience, but it also prevents us from doing the
 // proper cleanup at the end of this routine (ie: clearing the edit flags).
 m_selectionTool->AddItemToSel( curr_pin, true /*quiet mode*/ );
 }
 else
 {
 restore_state = true;
 }
 }
 catch( const boost::bad_pointer& e )
 {
 restore_state = true;
 wxFAIL_MSG( wxString::Format( wxT( "Boost pointer exception occurred: %s" ),
 e.what() ) );
 }
 }
 
 break; // Finish
 }
 else
 {
 evt->SetPassEvent();
 }
 
 } while( ( evt = Wait() ) ); // Assignment intentional; not equality test
 
 controls->ForceCursorPosition( false );
 controls->ShowCursor( false );
 controls->SetAutoPan( false );
 
 m_anchorPos = { 0, 0 };
 
 for( EDA_ITEM* item : selection )
 item->ClearEditFlags();
 
 if( unselect )
 m_toolMgr->RunAction( EE_ACTIONS::clearSelection );
 
 m_moveInProgress = false;
 m_frame->PopTool( aEvent );
 
 return !restore_state;
}
 
 
int SYMBOL_EDITOR_MOVE_TOOL::AlignElements( const TOOL_EVENT& aEvent )
{
 EE_GRID_HELPER grid( m_toolMgr);
 EE_SELECTION& selection = m_selectionTool->RequestSelection();
 SCH_COMMIT commit( m_toolMgr );
 
 auto doMoveItem =
 [&]( EDA_ITEM* item, const VECTOR2I& delta )
 {
 commit.Modify( item, m_frame->GetScreen() );
 static_cast<SCH_ITEM*>( item )->Move( delta );
 updateItem( item, true );
 };
 
 for( EDA_ITEM* item : selection )
 {
 if( SCH_SHAPE* shape = dynamic_cast<SCH_SHAPE*>( item ) )
 {
 VECTOR2I newStart = grid.AlignGrid( shape->GetStart(), grid.GetItemGrid( shape ) );
 VECTOR2I newEnd = grid.AlignGrid( shape->GetEnd(), grid.GetItemGrid( shape ) );
 
 switch( shape->GetShape() )
 {
 case SHAPE_T::SEGMENT:
 case SHAPE_T::RECTANGLE:
 case SHAPE_T::CIRCLE:
 case SHAPE_T::ARC:
 if( newStart == newEnd )
 {
 // Don't collapse shape; just snap its position
 if( newStart != shape->GetStart() )
 doMoveItem( shape, newStart - shape->GetStart() );
 }
 else if( newStart != shape->GetStart() || newEnd != shape->GetEnd() )
 {
 // Snap both ends
 commit.Modify( shape, m_frame->GetScreen() );
 
 shape->SetStart( newStart );
 shape->SetEnd( newEnd );
 
 updateItem( item, true );
 }
 
 break;
 
 case SHAPE_T::POLY:
 if( shape->GetPointCount() > 0 )
 {
 std::vector<VECTOR2I> newPts;
 
 for( const VECTOR2I& pt : shape->GetPolyShape().Outline( 0 ).CPoints() )
 newPts.push_back( grid.AlignGrid( pt, grid.GetItemGrid( shape ) ) );
 
 bool collapsed = false;
 
 for( int ii = 0; ii < (int) newPts.size() - 1; ++ii )
 {
 if( newPts[ii] == newPts[ii + 1] )
 collapsed = true;
 }
 
 if( collapsed )
 {
 // Don't collapse shape; just snap its position
 if( newStart != shape->GetStart() )
 doMoveItem( shape, newStart - shape->GetStart() );
 }
 else
 {
 commit.Modify( shape, m_frame->GetScreen() );
 
 for( int ii = 0; ii < (int) newPts.size(); ++ii )
 shape->GetPolyShape().Outline( 0 ).SetPoint( ii, newPts[ii] );
 
 updateItem( item, true );
 }
 }
 
 break;
 
 case SHAPE_T::BEZIER:
 // Snapping bezier control points is unlikely to be useful. Just snap its
 // position.
 if( newStart != shape->GetStart() )
 doMoveItem( shape, newStart - shape->GetStart() );
 
 break;
 
 case SHAPE_T::UNDEFINED:
 wxASSERT_MSG( false, wxT( "Undefined shape in AlignElements" ) );
 break;
 }
 }
 else
 {
 VECTOR2I newPos = grid.AlignGrid( item->GetPosition(), grid.GetItemGrid( item ) );
 VECTOR2I delta = newPos - item->GetPosition();
 
 if( delta != VECTOR2I( 0, 0 ) )
 doMoveItem( item, delta );
 
 if( SCH_PIN* pin = dynamic_cast<SCH_PIN*>( item ) )
 {
 int length = pin->GetLength();
 int pinGrid;
 
 if( pin->GetOrientation() == PIN_ORIENTATION::PIN_LEFT
 || pin->GetOrientation() == PIN_ORIENTATION::PIN_RIGHT )
 {
 pinGrid = KiROUND( grid.GetGridSize( grid.GetItemGrid( item ) ).x );
 }
 else
 {
 pinGrid = KiROUND( grid.GetGridSize( grid.GetItemGrid( item ) ).y );
 }
 
 int newLength = KiROUND( (double) length / pinGrid ) * pinGrid;
 
 if( newLength > 0 )
 pin->SetLength( newLength );
 }
 }
 }
 
 m_toolMgr->PostEvent( EVENTS::SelectedItemsMoved );
 
 commit.Push( _( "Align" ) );
 return 0;
}
 
 
void SYMBOL_EDITOR_MOVE_TOOL::moveItem( EDA_ITEM* aItem, const VECTOR2I& aDelta )
{
 static_cast<SCH_ITEM*>( aItem )->Move( aDelta );
 aItem->SetFlags( IS_MOVING );
}
 
 
void SYMBOL_EDITOR_MOVE_TOOL::setTransitions()
{
 Go( &SYMBOL_EDITOR_MOVE_TOOL::Main, EE_ACTIONS::move.MakeEvent() );
 Go( &SYMBOL_EDITOR_MOVE_TOOL::AlignElements, EE_ACTIONS::alignToGrid.MakeEvent() );
}