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kicad/eeschema/schematic_undo_redo.cpp

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/*************************************************************/
/* eeschema: undo and redo functions for schemùatic editor */
/*************************************************************/
#include "fctsys.h"
#include "common.h"
#include "confirm.h"
#include "program.h"
#include "libcmp.h"
#include "general.h"
#include "protos.h"
#include "class_marker_sch.h"
// Imported functions
void MirrorOneStruct( SCH_ITEM* DrawStruct, wxPoint& aMirrorPoint );
/* Functions to undo and redo edit commands.
* commmands to undo are stored in CurrentScreen->m_UndoList
* commmands to redo are stored in CurrentScreen->m_RedoList
*
* m_UndoList and m_RedoList handle a std::vector of PICKED_ITEMS_LIST
* Each PICKED_ITEMS_LIST handle a std::vector of pickers (class ITEM_PICKER),
* that store the list of schematic items that are concerned by the command to undo or redo
* and is created for each command to undo (handle also a command to redo).
* each picker has a pointer pointing to an item to undo or redo (in fact: deleted, added or modified),
* and has a pointer to a copy of this item, when this item has been modified
* (the old values of parameters are therefore saved)
*
* there are 3 cases:
* - delete item(s) command
* - change item(s) command
* - add item(s) command
*
* Undo command
* - delete item(s) command:
* => deleted items are moved in undo list
*
* - change item(s) command
* => A copy of item(s) is made (a DrawPickedStruct list of wrappers)
* the .m_Link member of each wrapper points the modified item.
* the .m_Item member of each wrapper points the old copy of this item.
*
* - add item(s) command
* =>A list of item(s) is made. The .m_Item member of each wrapper points the new item.
*
* Redo command
* - delete item(s) old command:
* => deleted items are moved in EEDrawList list, and in
*
* - change item(s) command
* => the copy of item(s) is moved in Undo list
*
* - add item(s) command
* => The list of item(s) is used to create a deleted list in undo list(same as a delete command)
*
* A problem is the hierarchical sheet handling.
* the data associated (subhierarchy, uno/redo list) is deleted only
* when the sheet is really deleted (i.e. when deleted from undo or redo list)
* This is handled by its destructor.
*/
/**************************************************************/
void SwapData( EDA_BaseStruct* aItem, EDA_BaseStruct* aImage )
/***************************************************************/
/* Used if undo / redo command:
* swap data between Item and its copy, pointed by its .m_Image member
* swapped data is data modified by edition, so not all values are swapped
*/
{
if( aItem == NULL || aImage == NULL )
{
wxMessageBox( wxT( "SwapData error: NULL pointer" ) );
return;
}
switch( aItem->Type() )
{
case DRAW_POLYLINE_STRUCT_TYPE:
#undef SOURCE
#undef DEST
#define SOURCE ( (DrawPolylineStruct*) aItem )
#define DEST ( (DrawPolylineStruct*) aImage )
break;
case DRAW_JUNCTION_STRUCT_TYPE:
#undef SOURCE
#undef DEST
#define SOURCE ( (DrawJunctionStruct*) aItem )
#define DEST ( (DrawJunctionStruct*) aImage )
EXCHG( SOURCE->m_Pos, DEST->m_Pos );
break;
case TYPE_SCH_LABEL:
case TYPE_SCH_GLOBALLABEL:
case TYPE_SCH_HIERLABEL:
case TYPE_SCH_TEXT:
#undef SOURCE
#undef DEST
#define SOURCE ( (SCH_TEXT*) aItem )
#define DEST ( (SCH_TEXT*) aImage )
DEST->SwapData( SOURCE );
break;
case TYPE_SCH_COMPONENT:
#undef SOURCE
#undef DEST
#define SOURCE ( (SCH_COMPONENT*) aItem )
#define DEST ( (SCH_COMPONENT*) aImage )
DEST->SwapData( SOURCE );
break;
case DRAW_SEGMENT_STRUCT_TYPE:
#undef SOURCE
#undef DEST
#define SOURCE ( (EDA_DrawLineStruct*) aItem )
#define DEST ( (EDA_DrawLineStruct*) aImage )
EXCHG( SOURCE->m_Start, DEST->m_Start );
EXCHG( SOURCE->m_End, DEST->m_End );
break;
case DRAW_BUSENTRY_STRUCT_TYPE:
#undef SOURCE
#undef DEST
#define SOURCE ( (DrawBusEntryStruct*) aItem )
#define DEST ( (DrawBusEntryStruct*) aImage )
EXCHG( SOURCE->m_Pos, DEST->m_Pos );
EXCHG( SOURCE->m_Size, DEST->m_Size );
break;
case DRAW_SHEET_STRUCT_TYPE:
#undef SOURCE
#undef DEST
#define SOURCE ( (DrawSheetStruct*) aItem )
#define DEST ( (DrawSheetStruct*) aImage )
DEST->SwapData( SOURCE );
break;
case DRAW_MARKER_STRUCT_TYPE:
#undef SOURCE
#undef DEST
#define SOURCE ( (MARKER_SCH*) aItem )
#define DEST ( (MARKER_SCH*) aImage )
EXCHG( SOURCE->m_Pos, DEST->m_Pos );
break;
case DRAW_HIERARCHICAL_PIN_SHEET_STRUCT_TYPE:
#undef SOURCE
#undef DEST
#define SOURCE ( (Hierarchical_PIN_Sheet_Struct*) aItem )
#define DEST ( (Hierarchical_PIN_Sheet_Struct*) aImage )
EXCHG( SOURCE->m_Edge, DEST->m_Edge );
EXCHG( SOURCE->m_Shape, DEST->m_Shape );
break;
case DRAW_NOCONNECT_STRUCT_TYPE:
#undef SOURCE
#undef DEST
#define SOURCE ( (DrawNoConnectStruct*) aItem )
#define DEST ( (DrawNoConnectStruct*) aImage )
EXCHG( SOURCE->m_Pos, DEST->m_Pos );
break;
case DRAW_PART_TEXT_STRUCT_TYPE:
break;
// not directly used in schematic:
default:
DisplayInfoMessage( NULL, wxT( "SwapData() error: unexpected type" ) );
break;
}
}
/***********************************************************************/
void WinEDA_SchematicFrame::SaveCopyInUndoList( SCH_ITEM* aItemToCopy,
UndoRedoOpType aCommandType,
const wxPoint& aTransformPoint )
/***********************************************************************/
/** function SaveCopyInUndoList
* Create a copy of the current schematic item, and put it in the undo list.
*
* flag_type_command =
* UR_CHANGED
* UR_NEW
* UR_DELETED
* UR_WIRE_IMAGE
*
* If it is a delete command, items are put on list with the .Flags member set to UR_DELETED.
* When it will be really deleted, the EEDrawList and the subhierarchy will be deleted.
* If it is only a copy, the EEDrawList and the subhierarchy must NOT be deleted.
*
* Note:
* Edit wires and busses is a bit complex.
* because when a new wire is added, modifications in wire list
* (wire concatenation) there are modified items, deleted items and new items
* so flag_type_command is UR_WIRE_IMAGE: the struct ItemToCopy is a list of wires
* saved in Undo List (for Undo or Redo commands, saved wires will be exchanged with current wire list
*/
{
SCH_ITEM* CopyOfItem;
PICKED_ITEMS_LIST* commandToUndo = new PICKED_ITEMS_LIST();
commandToUndo->m_TransformPoint = aTransformPoint;
ITEM_PICKER itemWrapper( aItemToCopy, aCommandType );
switch( aCommandType )
{
case UR_CHANGED: /* Create a copy of schematic */
CopyOfItem = DuplicateStruct( aItemToCopy );
itemWrapper.m_Item = CopyOfItem;
itemWrapper.m_Link = aItemToCopy;
commandToUndo->PushItem( itemWrapper );
break;
case UR_NEW:
case UR_WIRE_IMAGE:
case UR_DELETED:
case UR_MOVED:
commandToUndo->PushItem( itemWrapper );
break;
default:
{
wxString msg;
msg.Printf( wxT( "SaveCopyInUndoList() error (unknown code %X)" ), aCommandType );
DisplayError( this, msg );
}
break;
}
/* Save the copy in undo list */
GetScreen()->PushCommandToUndoList( commandToUndo );
/* Clear redo list, because after new save there is no redo to do */
GetScreen()->ClearUndoORRedoList( GetScreen()->m_RedoList );
}
/** function SaveCopyInUndoList
* @param aItemsList = a PICKED_ITEMS_LIST of items to save
* @param aTypeCommand = type of comand ( UR_CHANGED, UR_NEW, UR_DELETED ...
*/
void WinEDA_SchematicFrame::SaveCopyInUndoList( PICKED_ITEMS_LIST& aItemsList,
UndoRedoOpType aTypeCommand,
const wxPoint& aTransformPoint )
{
SCH_ITEM* CopyOfItem;
PICKED_ITEMS_LIST* commandToUndo = new PICKED_ITEMS_LIST();
commandToUndo->m_TransformPoint = aTransformPoint;
ITEM_PICKER itemWrapper;
for( unsigned ii = 0; ii < aItemsList.GetCount(); ii++ )
{
SCH_ITEM* ItemToCopy = (SCH_ITEM*) aItemsList.GetItemData( ii );
UndoRedoOpType command = aItemsList.GetItemStatus( ii );
if( command == UR_UNSPECIFIED )
{
command = aTypeCommand;
}
itemWrapper.m_Item = ItemToCopy;
itemWrapper.m_UndoRedoStatus = command;
switch( command )
{
case UR_CHANGED: /* Create a copy of schematic */
CopyOfItem = DuplicateStruct( ItemToCopy );
itemWrapper.m_Item = CopyOfItem;
itemWrapper.m_Link = ItemToCopy;
commandToUndo->PushItem( itemWrapper );
break;
case UR_MOVED:
case UR_MIRRORED_Y:
case UR_NEW:
commandToUndo->PushItem( itemWrapper );
break;
case UR_DELETED:
ItemToCopy->m_Flags = UR_DELETED;
commandToUndo->PushItem( itemWrapper );
break;
default:
{
wxString msg;
msg.Printf( wxT( "SaveCopyInUndoList() error (unknown code %X)" ), command );
DisplayError( this, msg );
}
break;
}
}
/* Save the copy in undo list */
GetScreen()->PushCommandToUndoList( commandToUndo );
/* Clear redo list, because after new save there is no redo to do */
GetScreen()->ClearUndoORRedoList( GetScreen()->m_RedoList );
}
/**********************************************************/
bool WinEDA_SchematicFrame::GetSchematicFromRedoList()
/**********************************************************/
/* Redo the last edition:
* - Save the current schematic in undo list
* - Get the old version
* @return false if nothing done, else true
*/
{
if( GetScreen()->GetRedoCommandCount() == 0 )
return false;
/* Get the old wrapper and put it in UndoList */
PICKED_ITEMS_LIST* List = GetScreen()->PopCommandFromRedoList();
GetScreen()->PushCommandToUndoList( List );
/* Redo the command: */
PutDataInPreviousState( List );
CurrentDrawItem = NULL;
GetScreen()->SetModify();
SetSheetNumberAndCount();
ReCreateHToolbar();
SetToolbars();
return true;
}
/***************************************************************************/
void WinEDA_SchematicFrame::PutDataInPreviousState( PICKED_ITEMS_LIST* aList )
/***************************************************************************/
/* Used in undo or redo command.
* Put data pointed by List in the previous state, i.e. the state memorised by List
*/
{
SCH_ITEM* item;
SCH_ITEM* alt_item;
for( unsigned ii = 0; ii < aList->GetCount(); ii++ )
{
ITEM_PICKER itemWrapper = aList->GetItemWrapper( ii );
item = (SCH_ITEM*) itemWrapper.m_Item;
wxASSERT( item );
SCH_ITEM* image = (SCH_ITEM*) itemWrapper.m_Link;
switch( itemWrapper.m_UndoRedoStatus )
{
case UR_CHANGED: /* Exchange old and new data for each item */
SwapData( item, image );
break;
case UR_NEW: /* new items are deleted */
aList->SetItemStatus( UR_DELETED, ii );
GetScreen()->RemoveFromDrawList( item );
item->m_Flags = UR_DELETED;
break;
case UR_DELETED: /* deleted items are put in EEdrawList, as new items */
aList->SetItemStatus( UR_NEW, ii );
item->SetNext( GetScreen()->EEDrawList );
GetScreen()->EEDrawList = item;
item->m_Flags = 0;
break;
case UR_MOVED:
{
wxPoint moveVector = - aList->m_TransformPoint;
MoveOneStruct( item, moveVector );
aList->m_TransformPoint = moveVector;
}
break;
case UR_MIRRORED_Y:
{
wxPoint mirrorPoint = aList->m_TransformPoint;
MirrorOneStruct( item, mirrorPoint );
}
break;
case UR_WIRE_IMAGE:
/* Exchange the current wires and the old wires */
alt_item = GetScreen()->ExtractWires( false );
aList->SetItem( alt_item, ii );
while( item )
{
SCH_ITEM* nextitem = item->Next();
item->SetNext( GetScreen()->EEDrawList );
GetScreen()->EEDrawList = item;
item->m_Flags = 0;
item = nextitem;
}
break;
default:
{
wxString msg;
msg.Printf( wxT(
"PutDataInPreviousState() error (unknown code %X)" ),
itemWrapper.m_UndoRedoStatus );
DisplayError( this, msg );
}
break;
}
}
}
/**********************************************************/
bool WinEDA_SchematicFrame::GetSchematicFromUndoList()
/**********************************************************/
/** Function GetSchematicFromUndoList
* Undo the last edition:
* - Save the current schematic in Redo list
* - Get an old version of the schematic
* @return false if nothing done, else true
*/
{
if( GetScreen()->GetUndoCommandCount() <= 0 )
return false;
/* Get the old wrapper and put it in RedoList */
PICKED_ITEMS_LIST* List = GetScreen()->PopCommandFromUndoList();
GetScreen()->PushCommandToRedoList( List );
/* Undo the command */
PutDataInPreviousState( List );
CurrentDrawItem = NULL;
GetScreen()->SetModify();
SetSheetNumberAndCount();
ReCreateHToolbar();
SetToolbars();
return true;
}
/***********************************************************************************/
void SCH_SCREEN::ClearUndoORRedoList( UNDO_REDO_CONTAINER& aList, int aItemCount )
/**********************************************************************************/
/** Function ClearUndoORRedoList
* free the undo or redo list from List element
* Wrappers are deleted.
* datas pointed by wrappers are deleted if not flagged UR_NEW
* because they are copy of used data or they are not in use (DELETED)
* @param aList = the UNDO_REDO_CONTAINER to clear
* @param aItemCount = the count of items to remove. < 0 for all items
* items are removed from the beginning of the list.
* So this function can be called to remove old commands
*/
{
if( aItemCount == 0 )
return;
unsigned icnt = aList.m_CommandsList.size();
if( aItemCount > 0 )
icnt = aItemCount;
for( unsigned ii = 0; ii < icnt; ii++ )
{
if( aList.m_CommandsList.size() == 0 )
break;
PICKED_ITEMS_LIST* curr_cmd = aList.m_CommandsList[0];
aList.m_CommandsList.erase( aList.m_CommandsList.begin() );
// Delete items is they are not flagged UR_NEW, or if this is a block operation
while( 1 )
{
ITEM_PICKER wrapper = curr_cmd->PopItem();
EDA_BaseStruct* item = wrapper.m_Item;
if( item == NULL ) // No more item in list.
break;
switch( wrapper.m_UndoRedoStatus )
{
case UR_WIRE_IMAGE:
while( item )
{
EDA_BaseStruct* nextitem = item->Next();
delete item;
item = nextitem;
}
break;
case UR_MOVED:
case UR_MIRRORED_X:
case UR_MIRRORED_Y:
case UR_ROTATED:
case UR_NEW: // Do nothing, items are in use
break;
default:
delete item;
break;
}
}
delete curr_cmd; // Delete command
}
}
/*****************************************/
void SCH_SCREEN::ClearUndoRedoList()
/*****************************************/
/* free the undo and the redo lists
*/
{
ClearUndoORRedoList( m_UndoList );
ClearUndoORRedoList( m_RedoList );
}
/***********************************************************/
void SCH_SCREEN::PushCommandToUndoList( PICKED_ITEMS_LIST* aItem )
/************************************************************/
/* Put newitem in head of undo list
* Deletes olds items if > count max.
*/
{
m_UndoList.PushCommand( aItem );
/* Delete the extra items, if count max reached */
int extraitems = GetUndoCommandCount() - m_UndoRedoCountMax;
if( extraitems > 0 ) // Delete the extra items
ClearUndoORRedoList( m_UndoList, extraitems );
}
/***********************************************************/
void SCH_SCREEN::PushCommandToRedoList( PICKED_ITEMS_LIST* aItem )
/***********************************************************/
{
m_RedoList.PushCommand( aItem );
/* Delete the extra items, if count max reached */
int extraitems = GetRedoCommandCount() - m_UndoRedoCountMax;
if( extraitems > 0 ) // Delete the extra items
ClearUndoORRedoList( m_RedoList, extraitems );
}
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